refactor(segments): string() to template()

moves templating engine to Segment

src/colors.go

@@ -9,7 +9,7 @@ import (
 // MakeColors creates instance of AnsiColors to use in AnsiWriter according to
 // environment and configuration.
 func MakeColors(env Environment, cfg *Config) AnsiColors {
-	cacheDisabled := env.getenv("OMP_CACHE_DISABLED") == "1"
+	cacheDisabled := env.Getenv("OMP_CACHE_DISABLED") == "1"
 	return makeColors(cfg.Palette, !cacheDisabled)
 }
 

src/config.go

@@ -66,8 +66,8 @@ func GetConfig(env Environment) *Config {
 
 func loadConfig(env Environment) (*Config, error) {
 	var cfg Config
-	configFile := *env.getArgs().Config
-	eval := *env.getArgs().Eval
+	configFile := *env.Args().Config
+	eval := *env.Args().Eval
 	if configFile == "" {
 		return nil, errors.New("NO CONFIG")
 	}
@@ -247,7 +247,7 @@ func getDefaultConfig(info string) *Config {
 						Background:      "#ffffff",
 						Foreground:      "#111111",
 						Properties: properties{
-							TextProperty: info,
+							SegmentTemplate: info,
 						},
 					},
 					{

src/console_title.go

@@ -51,7 +51,7 @@ func (t *consoleTitle) getTemplateText() string {
 }
 
 func (t *consoleTitle) getPwd() string {
-	pwd := t.env.pwd()
-	pwd = strings.Replace(pwd, t.env.homeDir(), "~", 1)
+	pwd := t.env.Pwd()
+	pwd = strings.Replace(pwd, t.env.Home(), "~", 1)
 	return pwd
 }

src/console_title_test.go

@@ -53,10 +53,10 @@ func TestGetConsoleTitle(t *testing.T) {
 			ConsoleTitleTemplate: tc.Template,
 		}
 		env := new(MockedEnvironment)
-		env.On("pwd").Return(tc.Cwd)
-		env.On("homeDir").Return("/usr/home")
-		env.On("getPathSeperator").Return(tc.PathSeperator)
-		env.On("templateCache").Return(&templateCache{
+		env.On("Pwd").Return(tc.Cwd)
+		env.On("Home").Return("/usr/home")
+		env.On("PathSeperator").Return(tc.PathSeperator)
+		env.On("TemplateCache").Return(&TemplateCache{
 			Env: map[string]string{
 				"USERDOMAIN": "MyCompany",
 			},
@@ -67,7 +67,6 @@ func TestGetConsoleTitle(t *testing.T) {
 			PWD:      tc.Cwd,
 			Folder:   base(tc.Cwd, env),
 		})
-		env.onTemplate()
 		ansi := &ansiUtils{}
 		ansi.init(tc.ShellName)
 		ct := &consoleTitle{
@@ -115,9 +114,9 @@ func TestGetConsoleTitleIfGethostnameReturnsError(t *testing.T) {
 			ConsoleTitleTemplate: tc.Template,
 		}
 		env := new(MockedEnvironment)
-		env.On("pwd").Return(tc.Cwd)
-		env.On("homeDir").Return("/usr/home")
-		env.On("templateCache").Return(&templateCache{
+		env.On("Pwd").Return(tc.Cwd)
+		env.On("Home").Return("/usr/home")
+		env.On("TemplateCache").Return(&TemplateCache{
 			Env: map[string]string{
 				"USERDOMAIN": "MyCompany",
 			},
@@ -126,7 +125,6 @@ func TestGetConsoleTitleIfGethostnameReturnsError(t *testing.T) {
 			Root:     tc.Root,
 			HostName: "",
 		})
-		env.onTemplate()
 		ansi := &ansiUtils{}
 		ansi.init(tc.ShellName)
 		ct := &consoleTitle{

src/engine.go

@@ -35,7 +35,7 @@ func (e *engine) string() string {
 
 func (e *engine) canWriteRPrompt() bool {
 	prompt := e.string()
-	consoleWidth, err := e.env.getTerminalWidth()
+	consoleWidth, err := e.env.TerminalWidth()
 	if err != nil || consoleWidth == 0 {
 		return true
 	}
@@ -66,7 +66,7 @@ func (e *engine) render() string {
 	if !e.config.OSC99 {
 		return e.print()
 	}
-	cwd := e.env.pwd()
+	cwd := e.env.Pwd()
 	e.writeANSI(e.ansi.consolePwd(cwd))
 	return e.print()
 }
@@ -74,7 +74,7 @@ func (e *engine) render() string {
 func (e *engine) renderBlock(block *Block) {
 	// when in bash, for rprompt blocks we need to write plain
 	// and wrap in escaped mode or the prompt will not render correctly
-	if block.Type == RPrompt && e.env.getShellName() == bash {
+	if block.Type == RPrompt && e.env.Shell() == bash {
 		block.initPlain(e.env, e.config)
 	} else {
 		block.init(e.env, e.writer, e.ansi)
@@ -107,7 +107,7 @@ func (e *engine) renderBlock(block *Block) {
 		}
 	case RPrompt:
 		blockText := block.renderSegments()
-		if e.env.getShellName() == bash {
+		if e.env.Shell() == bash {
 			blockText = fmt.Sprintf(e.ansi.bashFormat, blockText)
 		}
 		e.rprompt = blockText
@@ -161,16 +161,16 @@ func (e *engine) debug() string {
 		e.write(fmt.Sprintf("%-*s - %3d ms - %s\n", largestSegmentNameLength, segmentName, duration, segment.stringValue))
 	}
 	e.write(fmt.Sprintf("\n\x1b[1mRun duration:\x1b[0m %s\n", time.Since(start)))
-	e.write(fmt.Sprintf("\n\x1b[1mCache path:\x1b[0m %s\n", e.env.getCachePath()))
+	e.write(fmt.Sprintf("\n\x1b[1mCache path:\x1b[0m %s\n", e.env.CachePath()))
 	e.write("\n\x1b[1mLogs:\x1b[0m\n\n")
-	e.write(e.env.logs())
+	e.write(e.env.Logs())
 	return e.string()
 }
 
 func (e *engine) print() string {
-	switch e.env.getShellName() {
+	switch e.env.Shell() {
 	case zsh:
-		if !*e.env.getArgs().Eval {
+		if !*e.env.Args().Eval {
 			break
 		}
 		// escape double quotes contained in the prompt
@@ -214,7 +214,7 @@ func (e *engine) renderTooltip(tip string) string {
 		Alignment: Right,
 		Segments:  []*Segment{tooltip},
 	}
-	switch e.env.getShellName() {
+	switch e.env.Shell() {
 	case zsh, winCMD:
 		block.init(e.env, e.writer, e.ansi)
 		return block.renderSegments()
@@ -248,7 +248,7 @@ func (e *engine) renderTransientPrompt() string {
 	}
 	e.writer.setColors(e.config.TransientPrompt.Background, e.config.TransientPrompt.Foreground)
 	e.writer.write(e.config.TransientPrompt.Background, e.config.TransientPrompt.Foreground, prompt)
-	switch e.env.getShellName() {
+	switch e.env.Shell() {
 	case zsh:
 		// escape double quotes contained in the prompt
 		prompt := fmt.Sprintf("PS1=\"%s\"", strings.ReplaceAll(e.writer.string(), "\"", "\"\""))

src/engine_test.go

@@ -30,7 +30,7 @@ func TestCanWriteRPrompt(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getTerminalWidth").Return(tc.TerminalWidth, tc.TerminalWidthError)
+		env.On("TerminalWidth").Return(tc.TerminalWidth, tc.TerminalWidthError)
 		ansi := &ansiUtils{}
 		ansi.init(plain)
 		engine := &engine{
@@ -73,7 +73,7 @@ func engineRender(configPath string) error {
 		execTime = 917.0
 	)
 
-	args := &args{
+	args := &Args{
 		Debug:         &debug,
 		Config:        &configPath,
 		Eval:          &eval,
@@ -87,13 +87,13 @@ func engineRender(configPath string) error {
 
 	env := &environment{}
 	env.init(args)
-	defer env.close()
+	defer env.Close()
 
 	cfg := GetConfig(env)
 	defer testClearDefaultConfig()
 
 	ansi := &ansiUtils{}
-	ansi.init(env.getShellName())
+	ansi.init(env.Shell())
 	writerColors := MakeColors(env, cfg)
 	writer := &AnsiWriter{
 		ansi:               ansi,

src/environment.go

@@ -41,18 +41,18 @@ func (m *noBatteryError) Error() string {
 	return "no battery"
 }
 
-type fileInfo struct {
-	parentFolder string
-	path         string
-	isDir        bool
+type FileInfo struct {
+	ParentFolder string
+	Path         string
+	IsDir        bool
 }
 
-type cache interface {
-	init(home string)
-	close()
-	get(key string) (string, bool)
+type Cache interface {
+	Init(home string)
+	Close()
+	Get(key string) (string, bool)
 	// ttl in minutes
-	set(key, value string, ttl int)
+	Set(key, value string, ttl int)
 }
 
 type HTTPRequestModifier func(request *http.Request)
@@ -65,7 +65,7 @@ const (
 	regString
 )
 
-type windowsRegistryValue struct {
+type WindowsRegistryValue struct {
 	valueType windowsRegistryValueType
 	qword     uint64
 	dword     uint32
@@ -74,7 +74,7 @@ type windowsRegistryValue struct {
 
 type WifiType string
 
-type wifiInfo struct {
+type WifiInfo struct {
 	SSID           string
 	Interface      string
 	RadioType      WifiType
@@ -89,45 +89,45 @@ type wifiInfo struct {
 }
 
 type Environment interface {
-	getenv(key string) string
-	pwd() string
-	homeDir() string
-	hasFiles(pattern string) bool
-	hasFilesInDir(dir, pattern string) bool
-	hasFolder(folder string) bool
-	getFileContent(file string) string
-	getFoldersList(path string) []string
-	getPathSeperator() string
-	getCurrentUser() string
-	isRunningAsRoot() bool
-	getHostName() (string, error)
-	getRuntimeGOOS() string
-	getPlatform() string
-	hasCommand(command string) bool
-	runCommand(command string, args ...string) (string, error)
-	runShellCommand(shell, command string) string
-	lastErrorCode() int
-	executionTime() float64
-	getArgs() *args
-	getBatteryInfo() ([]*battery.Battery, error)
-	getShellName() string
-	getWindowTitle(imageName, windowTitleRegex string) (string, error)
-	getWindowsRegistryKeyValue(path string) (*windowsRegistryValue, error)
+	Getenv(key string) string
+	Pwd() string
+	Home() string
+	User() string
+	Root() bool
+	Host() (string, error)
+	GOOS() string
+	Shell() string
+	Platform() string
+	ErrorCode() int
+	PathSeperator() string
+	HasFiles(pattern string) bool
+	HasFilesInDir(dir, pattern string) bool
+	HasFolder(folder string) bool
+	HasParentFilePath(path string) (fileInfo *FileInfo, err error)
+	HasCommand(command string) bool
+	FileContent(file string) string
+	FolderList(path string) []string
+	RunCommand(command string, args ...string) (string, error)
+	RunShellCommand(shell, command string) string
+	ExecutionTime() float64
+	Args() *Args
+	BatteryInfo() ([]*battery.Battery, error)
+	WindowTitle(imageName, windowTitleRegex string) (string, error)
+	WindowsRegistryKeyValue(path string) (*WindowsRegistryValue, error)
 	HTTPRequest(url string, timeout int, requestModifiers ...HTTPRequestModifier) ([]byte, error)
-	hasParentFilePath(path string) (fileInfo *fileInfo, err error)
-	isWsl() bool
-	isWsl2() bool
-	stackCount() int
-	getTerminalWidth() (int, error)
-	getCachePath() string
-	cache() cache
-	close()
-	logs() string
-	inWSLSharedDrive() bool
-	convertToLinuxPath(path string) string
-	convertToWindowsPath(path string) string
-	getWifiNetwork() (*wifiInfo, error)
-	templateCache() *templateCache
+	IsWsl() bool
+	IsWsl2() bool
+	StackCount() int
+	TerminalWidth() (int, error)
+	CachePath() string
+	Cache() Cache
+	Close()
+	Logs() string
+	InWSLSharedDrive() bool
+	ConvertToLinuxPath(path string) string
+	ConvertToWindowsPath(path string) string
+	WifiNetwork() (*WifiInfo, error)
+	TemplateCache() *TemplateCache
 }
 
 type commandCache struct {
@@ -155,19 +155,19 @@ const (
 )
 
 type environment struct {
-	args       *args
+	args       *Args
 	cwd        string
 	cmdCache   *commandCache
 	fileCache  *fileCache
-	tmplCache  *templateCache
+	tmplCache  *TemplateCache
 	logBuilder strings.Builder
 	debug      bool
 }
 
-func (env *environment) init(args *args) {
+func (env *environment) init(args *Args) {
 	env.args = args
 	env.fileCache = &fileCache{}
-	env.fileCache.init(env.getCachePath())
+	env.fileCache.Init(env.CachePath())
 	env.resolveConfigPath()
 	env.cmdCache = &commandCache{
 		commands: newConcurrentMap(),
@@ -184,13 +184,13 @@ func (env *environment) resolveConfigPath() {
 	}
 	// Cygwin path always needs the full path as we're on Windows but not really.
 	// Doing filepath actions will convert it to a Windows path and break the init script.
-	if env.getPlatform() == windowsPlatform && env.getShellName() == bash {
+	if env.Platform() == windowsPlatform && env.Shell() == bash {
 		return
 	}
 	configFile := *env.args.Config
 	if strings.HasPrefix(configFile, "~") {
 		configFile = strings.TrimPrefix(configFile, "~")
-		configFile = filepath.Join(env.homeDir(), configFile)
+		configFile = filepath.Join(env.Home(), configFile)
 	}
 	if !filepath.IsAbs(configFile) {
 		if absConfigFile, err := filepath.Abs(configFile); err == nil {
@@ -217,17 +217,17 @@ func (env *environment) log(lt logType, function, message string) {
 	log.Println(trace)
 }
 
-func (env *environment) getenv(key string) string {
-	defer env.trace(time.Now(), "getenv", key)
+func (env *environment) Getenv(key string) string {
+	defer env.trace(time.Now(), "Getenv", key)
 	val := os.Getenv(key)
-	env.log(Debug, "getenv", val)
+	env.log(Debug, "Getenv", val)
 	return val
 }
 
-func (env *environment) pwd() string {
-	defer env.trace(time.Now(), "pwd")
+func (env *environment) Pwd() string {
+	defer env.trace(time.Now(), "Pwd")
 	defer func() {
-		env.log(Debug, "pwd", env.cwd)
+		env.log(Debug, "Pwd", env.cwd)
 	}()
 	if env.cwd != "" {
 		return env.cwd
@@ -243,57 +243,57 @@ func (env *environment) pwd() string {
 	}
 	dir, err := os.Getwd()
 	if err != nil {
-		env.log(Error, "pwd", err.Error())
+		env.log(Error, "Pwd", err.Error())
 		return ""
 	}
 	env.cwd = correctPath(dir)
 	return env.cwd
 }
 
-func (env *environment) hasFiles(pattern string) bool {
-	defer env.trace(time.Now(), "hasFiles", pattern)
-	cwd := env.pwd()
-	pattern = cwd + env.getPathSeperator() + pattern
+func (env *environment) HasFiles(pattern string) bool {
+	defer env.trace(time.Now(), "HasFiles", pattern)
+	cwd := env.Pwd()
+	pattern = cwd + env.PathSeperator() + pattern
 	matches, err := filepath.Glob(pattern)
 	if err != nil {
-		env.log(Error, "hasFiles", err.Error())
+		env.log(Error, "HasFiles", err.Error())
 		return false
 	}
 	return len(matches) > 0
 }
 
-func (env *environment) hasFilesInDir(dir, pattern string) bool {
-	defer env.trace(time.Now(), "hasFilesInDir", pattern)
-	pattern = dir + env.getPathSeperator() + pattern
+func (env *environment) HasFilesInDir(dir, pattern string) bool {
+	defer env.trace(time.Now(), "HasFilesInDir", pattern)
+	pattern = dir + env.PathSeperator() + pattern
 	matches, err := filepath.Glob(pattern)
 	if err != nil {
-		env.log(Error, "hasFilesInDir", err.Error())
+		env.log(Error, "HasFilesInDir", err.Error())
 		return false
 	}
 	return len(matches) > 0
 }
 
-func (env *environment) hasFolder(folder string) bool {
-	defer env.trace(time.Now(), "hasFolder", folder)
+func (env *environment) HasFolder(folder string) bool {
+	defer env.trace(time.Now(), "HasFolder", folder)
 	_, err := os.Stat(folder)
 	return !os.IsNotExist(err)
 }
 
-func (env *environment) getFileContent(file string) string {
-	defer env.trace(time.Now(), "getFileContent", file)
+func (env *environment) FileContent(file string) string {
+	defer env.trace(time.Now(), "FileContent", file)
 	content, err := ioutil.ReadFile(file)
 	if err != nil {
-		env.log(Error, "getFileContent", err.Error())
+		env.log(Error, "FileContent", err.Error())
 		return ""
 	}
 	return string(content)
 }
 
-func (env *environment) getFoldersList(path string) []string {
-	defer env.trace(time.Now(), "getFoldersList", path)
+func (env *environment) FolderList(path string) []string {
+	defer env.trace(time.Now(), "FolderList", path)
 	content, err := os.ReadDir(path)
 	if err != nil {
-		env.log(Error, "getFoldersList", err.Error())
+		env.log(Error, "FolderList", err.Error())
 		return nil
 	}
 	var folderNames []string
@@ -305,13 +305,13 @@ func (env *environment) getFoldersList(path string) []string {
 	return folderNames
 }
 
-func (env *environment) getPathSeperator() string {
-	defer env.trace(time.Now(), "getPathSeperator")
+func (env *environment) PathSeperator() string {
+	defer env.trace(time.Now(), "PathSeperator")
 	return string(os.PathSeparator)
 }
 
-func (env *environment) getCurrentUser() string {
-	defer env.trace(time.Now(), "getCurrentUser")
+func (env *environment) User() string {
+	defer env.trace(time.Now(), "User")
 	user := os.Getenv("USER")
 	if user == "" {
 		user = os.Getenv("USERNAME")
@@ -319,23 +319,23 @@ func (env *environment) getCurrentUser() string {
 	return user
 }
 
-func (env *environment) getHostName() (string, error) {
-	defer env.trace(time.Now(), "getHostName")
+func (env *environment) Host() (string, error) {
+	defer env.trace(time.Now(), "Host")
 	hostName, err := os.Hostname()
 	if err != nil {
-		env.log(Error, "getHostName", err.Error())
+		env.log(Error, "Host", err.Error())
 		return "", err
 	}
 	return cleanHostName(hostName), nil
 }
 
-func (env *environment) getRuntimeGOOS() string {
-	defer env.trace(time.Now(), "getRuntimeGOOS")
+func (env *environment) GOOS() string {
+	defer env.trace(time.Now(), "GOOS")
 	return runtime.GOOS
 }
 
-func (env *environment) runCommand(command string, args ...string) (string, error) {
-	defer env.trace(time.Now(), "runCommand", append([]string{command}, args...)...)
+func (env *environment) RunCommand(command string, args ...string) (string, error) {
+	defer env.trace(time.Now(), "RunCommand", append([]string{command}, args...)...)
 	if cmd, ok := env.cmdCache.get(command); ok {
 		command = cmd
 	}
@@ -348,22 +348,22 @@ func (env *environment) runCommand(command string, args ...string) (string, erro
 	if cmdErr != nil {
 		output := err.String()
 		errorStr := fmt.Sprintf("cmd.Start() failed with '%s'", output)
-		env.log(Error, "runCommand", errorStr)
+		env.log(Error, "RunCommand", errorStr)
 		return output, cmdErr
 	}
 	output := strings.TrimSuffix(out.String(), "\n")
-	env.log(Debug, "runCommand", output)
+	env.log(Debug, "RunCommand", output)
 	return output, nil
 }
 
-func (env *environment) runShellCommand(shell, command string) string {
-	defer env.trace(time.Now(), "runShellCommand", shell, command)
-	out, _ := env.runCommand(shell, "-c", command)
+func (env *environment) RunShellCommand(shell, command string) string {
+	defer env.trace(time.Now(), "RunShellCommand", shell, command)
+	out, _ := env.RunCommand(shell, "-c", command)
 	return out
 }
 
-func (env *environment) hasCommand(command string) bool {
-	defer env.trace(time.Now(), "hasCommand", command)
+func (env *environment) HasCommand(command string) bool {
+	defer env.trace(time.Now(), "HasCommand", command)
 	if _, ok := env.cmdCache.get(command); ok {
 		return true
 	}
@@ -372,34 +372,34 @@ func (env *environment) hasCommand(command string) bool {
 		env.cmdCache.set(command, path)
 		return true
 	}
-	env.log(Error, "hasCommand", err.Error())
+	env.log(Error, "HasCommand", err.Error())
 	return false
 }
 
-func (env *environment) lastErrorCode() int {
-	defer env.trace(time.Now(), "lastErrorCode")
+func (env *environment) ErrorCode() int {
+	defer env.trace(time.Now(), "ErrorCode")
 	return *env.args.ErrorCode
 }
 
-func (env *environment) executionTime() float64 {
-	defer env.trace(time.Now(), "executionTime")
+func (env *environment) ExecutionTime() float64 {
+	defer env.trace(time.Now(), "ExecutionTime")
 	if *env.args.ExecutionTime < 0 {
 		return 0
 	}
 	return *env.args.ExecutionTime
 }
 
-func (env *environment) getArgs() *args {
-	defer env.trace(time.Now(), "getArgs")
+func (env *environment) Args() *Args {
+	defer env.trace(time.Now(), "Args")
 	return env.args
 }
 
-func (env *environment) getBatteryInfo() ([]*battery.Battery, error) {
-	defer env.trace(time.Now(), "getBatteryInfo")
+func (env *environment) BatteryInfo() ([]*battery.Battery, error) {
+	defer env.trace(time.Now(), "BatteryInfo")
 	batteries, err := battery.GetAll()
 	// actual error, return it
 	if err != nil && len(batteries) == 0 {
-		env.log(Error, "getBatteryInfo", err.Error())
+		env.log(Error, "BatteryInfo", err.Error())
 		return nil, err
 	}
 	// there are no batteries found
@@ -447,15 +447,15 @@ func (env *environment) getBatteryInfo() ([]*battery.Battery, error) {
 	}
 	// another error occurred (possibly unmapped use-case), return it
 	if fatalErr != nil {
-		env.log(Error, "getBatteryInfo", fatalErr.Error())
+		env.log(Error, "BatteryInfo", fatalErr.Error())
 		return nil, fatalErr
 	}
 	// everything is fine
 	return validBatteries, nil
 }
 
-func (env *environment) getShellName() string {
-	defer env.trace(time.Now(), "getShellName")
+func (env *environment) Shell() string {
+	defer env.trace(time.Now(), "Shell")
 	if *env.args.Shell != "" {
 		return *env.args.Shell
 	}
@@ -463,7 +463,7 @@ func (env *environment) getShellName() string {
 	p, _ := process.NewProcess(int32(pid))
 	name, err := p.Name()
 	if err != nil {
-		env.log(Error, "getShellName", err.Error())
+		env.log(Error, "Shell", err.Error())
 		return unknown
 	}
 	if name == "cmd.exe" {
@@ -471,7 +471,7 @@ func (env *environment) getShellName() string {
 		name, err = p.Name()
 	}
 	if err != nil {
-		env.log(Error, "getShellName", err.Error())
+		env.log(Error, "Shell", err.Error())
 		return unknown
 	}
 	// Cache the shell value to speed things up.
@@ -504,17 +504,17 @@ func (env *environment) HTTPRequest(url string, timeout int, requestModifiers ..
 	return body, nil
 }
 
-func (env *environment) hasParentFilePath(path string) (*fileInfo, error) {
-	defer env.trace(time.Now(), "hasParentFilePath", path)
-	currentFolder := env.pwd()
+func (env *environment) HasParentFilePath(path string) (*FileInfo, error) {
+	defer env.trace(time.Now(), "HasParentFilePath", path)
+	currentFolder := env.Pwd()
 	for {
 		searchPath := filepath.Join(currentFolder, path)
 		info, err := os.Stat(searchPath)
 		if err == nil {
-			return &fileInfo{
-				parentFolder: currentFolder,
-				path:         searchPath,
-				isDir:        info.IsDir(),
+			return &FileInfo{
+				ParentFolder: currentFolder,
+				Path:         searchPath,
+				IsDir:        info.IsDir(),
 			}, nil
 		}
 		if !os.IsNotExist(err) {
@@ -524,41 +524,41 @@ func (env *environment) hasParentFilePath(path string) (*fileInfo, error) {
 			currentFolder = dir
 			continue
 		}
-		env.log(Error, "hasParentFilePath", err.Error())
+		env.log(Error, "HasParentFilePath", err.Error())
 		return nil, errors.New("no match at root level")
 	}
 }
 
-func (env *environment) stackCount() int {
-	defer env.trace(time.Now(), "stackCount")
+func (env *environment) StackCount() int {
+	defer env.trace(time.Now(), "StackCount")
 	if *env.args.StackCount < 0 {
 		return 0
 	}
 	return *env.args.StackCount
 }
 
-func (env *environment) cache() cache {
+func (env *environment) Cache() Cache {
 	return env.fileCache
 }
 
-func (env *environment) close() {
-	env.fileCache.close()
+func (env *environment) Close() {
+	env.fileCache.Close()
 }
 
-func (env *environment) logs() string {
+func (env *environment) Logs() string {
 	return env.logBuilder.String()
 }
 
-func (env *environment) templateCache() *templateCache {
-	defer env.trace(time.Now(), "templateCache")
+func (env *environment) TemplateCache() *TemplateCache {
+	defer env.trace(time.Now(), "TemplateCache")
 	if env.tmplCache != nil {
 		return env.tmplCache
 	}
-	tmplCache := &templateCache{
-		Root:  env.isRunningAsRoot(),
-		Shell: env.getShellName(),
-		Code:  env.lastErrorCode(),
-		WSL:   env.isWsl(),
+	tmplCache := &TemplateCache{
+		Root:  env.Root(),
+		Shell: env.Shell(),
+		Code:  env.ErrorCode(),
+		WSL:   env.IsWsl(),
 	}
 	tmplCache.Env = make(map[string]string)
 	const separator = "="
@@ -572,15 +572,15 @@ func (env *environment) templateCache() *templateCache {
 		val := splitted[1:]
 		tmplCache.Env[key] = strings.Join(val, separator)
 	}
-	pwd := env.pwd()
-	pwd = strings.Replace(pwd, env.homeDir(), "~", 1)
+	pwd := env.Pwd()
+	pwd = strings.Replace(pwd, env.Home(), "~", 1)
 	tmplCache.PWD = pwd
 	tmplCache.Folder = base(pwd, env)
-	tmplCache.UserName = env.getCurrentUser()
-	if host, err := env.getHostName(); err == nil {
+	tmplCache.UserName = env.User()
+	if host, err := env.Host(); err == nil {
 		tmplCache.HostName = host
 	}
-	goos := env.getRuntimeGOOS()
+	goos := env.GOOS()
 	tmplCache.OS = goos
 	env.tmplCache = tmplCache
 	return env.tmplCache

src/environment_cache.go

@@ -21,7 +21,7 @@ type fileCache struct {
 	cachePath string
 }
 
-func (fc *fileCache) init(cachePath string) {
+func (fc *fileCache) Init(cachePath string) {
 	fc.cache = newConcurrentMap()
 	fc.cachePath = cachePath
 	content, err := ioutil.ReadFile(fc.cachePath + fileName)
@@ -39,7 +39,7 @@ func (fc *fileCache) init(cachePath string) {
 	}
 }
 
-func (fc *fileCache) close() {
+func (fc *fileCache) Close() {
 	cache := fc.cache.list()
 	if len(cache) == 0 {
 		return
@@ -51,7 +51,7 @@ func (fc *fileCache) close() {
 
 // returns the value for the given key as long as
 // the TTL (minutes) is not expired
-func (fc *fileCache) get(key string) (string, bool) {
+func (fc *fileCache) Get(key string) (string, bool) {
 	val, found := fc.cache.get(key)
 	if !found {
 		return "", false
@@ -72,7 +72,7 @@ func (fc *fileCache) get(key string) (string, bool) {
 }
 
 // sets the value for the given key with a TTL (minutes)
-func (fc *fileCache) set(key, value string, ttl int) {
+func (fc *fileCache) Set(key, value string, ttl int) {
 	fc.cache.set(key, &cacheObject{
 		Value:     value,
 		Timestamp: time.Now().Unix(),

src/environment_cache_mock_test.go

@@ -8,12 +8,12 @@ type MockedCache struct {
 }
 
 // close provides a mock function with given fields:
-func (_m *MockedCache) close() {
+func (_m *MockedCache) Close() {
 	_m.Called()
 }
 
 // get provides a mock function with given fields: key
-func (_m *MockedCache) get(key string) (string, bool) {
+func (_m *MockedCache) Get(key string) (string, bool) {
 	ret := _m.Called(key)
 
 	var r0 string
@@ -34,11 +34,11 @@ func (_m *MockedCache) get(key string) (string, bool) {
 }
 
 // init provides a mock function with given fields: home
-func (_m *MockedCache) init(home string) {
+func (_m *MockedCache) Init(home string) {
 	_m.Called(home)
 }
 
 // set provides a mock function with given fields: key, value, ttl
-func (_m *MockedCache) set(key, value string, ttl int) {
+func (_m *MockedCache) Set(key, value string, ttl int) {
 	_m.Called(key, value, ttl)
 }

src/environment_test.go

@@ -37,10 +37,10 @@ func TestWindowsPathWithDriveLetter(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := &environment{
-			args: &args{
+			args: &Args{
 				PWD: &tc.CWD,
 			},
 		}
-		assert.Equal(t, env.pwd(), tc.Expected)
+		assert.Equal(t, env.Pwd(), tc.Expected)
 	}
 }

src/environment_unix.go

@@ -12,56 +12,56 @@ import (
 	terminal "github.com/wayneashleyberry/terminal-dimensions"
 )
 
-func (env *environment) isRunningAsRoot() bool {
-	defer env.trace(time.Now(), "isRunningAsRoot")
+func (env *environment) Root() bool {
+	defer env.trace(time.Now(), "Root")
 	return os.Geteuid() == 0
 }
 
-func (env *environment) homeDir() string {
+func (env *environment) Home() string {
 	return os.Getenv("HOME")
 }
 
-func (env *environment) getWindowTitle(imageName, windowTitleRegex string) (string, error) {
+func (env *environment) WindowTitle(imageName, windowTitleRegex string) (string, error) {
 	return "", errors.New("not implemented")
 }
 
-func (env *environment) isWsl() bool {
-	defer env.trace(time.Now(), "isWsl")
+func (env *environment) IsWsl() bool {
+	defer env.trace(time.Now(), "IsWsl")
 	// one way to check
-	// version := env.getFileContent("/proc/version")
+	// version := env.FileContent("/proc/version")
 	// return strings.Contains(version, "microsoft")
 	// using env variable
-	return env.getenv("WSL_DISTRO_NAME") != ""
+	return env.Getenv("WSL_DISTRO_NAME") != ""
 }
 
-func (env *environment) isWsl2() bool {
-	defer env.trace(time.Now(), "isWsl2")
-	if !env.isWsl() {
+func (env *environment) IsWsl2() bool {
+	defer env.trace(time.Now(), "IsWsl2")
+	if !env.IsWsl() {
 		return false
 	}
-	uname := env.getFileContent("/proc/sys/kernel/osrelease")
+	uname := env.FileContent("/proc/sys/kernel/osrelease")
 	return strings.Contains(uname, "WSL2")
 }
 
-func (env *environment) getTerminalWidth() (int, error) {
-	defer env.trace(time.Now(), "getTerminalWidth")
+func (env *environment) TerminalWidth() (int, error) {
+	defer env.trace(time.Now(), "TerminalWidth")
 	width, err := terminal.Width()
 	if err != nil {
-		env.log(Error, "runCommand", err.Error())
+		env.log(Error, "RunCommand", err.Error())
 	}
 	return int(width), err
 }
 
-func (env *environment) getPlatform() string {
+func (env *environment) Platform() string {
 	const key = "environment_platform"
-	if val, found := env.cache().get(key); found {
+	if val, found := env.Cache().Get(key); found {
 		return val
 	}
 	var platform string
 	defer func() {
-		env.cache().set(key, platform, -1)
+		env.Cache().Set(key, platform, -1)
 	}()
-	if wsl := env.getenv("WSL_DISTRO_NAME"); len(wsl) != 0 {
+	if wsl := env.Getenv("WSL_DISTRO_NAME"); len(wsl) != 0 {
 		platform = strings.ToLower(wsl)
 		return platform
 	}
@@ -69,43 +69,43 @@ func (env *environment) getPlatform() string {
 	return platform
 }
 
-func (env *environment) getCachePath() string {
-	defer env.trace(time.Now(), "getCachePath")
+func (env *environment) CachePath() string {
+	defer env.trace(time.Now(), "CachePath")
 	// get XDG_CACHE_HOME if present
-	if cachePath := returnOrBuildCachePath(env.getenv("XDG_CACHE_HOME")); len(cachePath) != 0 {
+	if cachePath := returnOrBuildCachePath(env.Getenv("XDG_CACHE_HOME")); len(cachePath) != 0 {
 		return cachePath
 	}
 	// HOME cache folder
-	if cachePath := returnOrBuildCachePath(env.homeDir() + "/.cache"); len(cachePath) != 0 {
+	if cachePath := returnOrBuildCachePath(env.Home() + "/.cache"); len(cachePath) != 0 {
 		return cachePath
 	}
-	return env.homeDir()
+	return env.Home()
 }
 
-func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistryValue, error) {
+func (env *environment) WindowsRegistryKeyValue(path string) (*WindowsRegistryValue, error) {
 	return nil, errors.New("not implemented")
 }
 
-func (env *environment) inWSLSharedDrive() bool {
-	return env.isWsl() && strings.HasPrefix(env.pwd(), "/mnt/")
+func (env *environment) InWSLSharedDrive() bool {
+	return env.IsWsl() && strings.HasPrefix(env.Pwd(), "/mnt/")
 }
 
-func (env *environment) convertToWindowsPath(path string) string {
-	windowsPath, err := env.runCommand("wslpath", "-w", path)
+func (env *environment) ConvertToWindowsPath(path string) string {
+	windowsPath, err := env.RunCommand("wslpath", "-w", path)
 	if err == nil {
 		return windowsPath
 	}
 	return path
 }
 
-func (env *environment) convertToLinuxPath(path string) string {
-	linuxPath, err := env.runCommand("wslpath", "-u", path)
+func (env *environment) ConvertToLinuxPath(path string) string {
+	linuxPath, err := env.RunCommand("wslpath", "-u", path)
 	if err == nil {
 		return linuxPath
 	}
 	return path
 }
 
-func (env *environment) getWifiNetwork() (*wifiInfo, error) {
+func (env *environment) WifiNetwork() (*WifiInfo, error) {
 	return nil, errors.New("not implemented")
 }

src/environment_windows.go

@@ -16,8 +16,8 @@ import (
 	"golang.org/x/sys/windows"
 )
 
-func (env *environment) isRunningAsRoot() bool {
-	defer env.trace(time.Now(), "isRunningAsRoot")
+func (env *environment) Root() bool {
+	defer env.trace(time.Now(), "Root")
 	var sid *windows.SID
 
 	// Although this looks scary, it is directly copied from the
@@ -32,7 +32,7 @@ func (env *environment) isRunningAsRoot() bool {
 		0, 0, 0, 0, 0, 0,
 		&sid)
 	if err != nil {
-		env.log(Error, "isRunningAsRoot", err.Error())
+		env.log(Error, "Root", err.Error())
 		return false
 	}
 	defer func() {
@@ -46,17 +46,17 @@ func (env *environment) isRunningAsRoot() bool {
 
 	member, err := token.IsMember(sid)
 	if err != nil {
-		env.log(Error, "isRunningAsRoot", err.Error())
+		env.log(Error, "Root", err.Error())
 		return false
 	}
 
 	return member
 }
 
-func (env *environment) homeDir() string {
+func (env *environment) Home() string {
 	home := os.Getenv("HOME")
 	defer func() {
-		env.log(Debug, "homeDir", home)
+		env.log(Debug, "Home", home)
 	}()
 	if len(home) > 0 {
 		return home
@@ -69,48 +69,48 @@ func (env *environment) homeDir() string {
 	return home
 }
 
-func (env *environment) getWindowTitle(imageName, windowTitleRegex string) (string, error) {
-	defer env.trace(time.Now(), "getWindowTitle", imageName, windowTitleRegex)
-	return getWindowTitle(imageName, windowTitleRegex)
+func (env *environment) WindowTitle(imageName, windowTitleRegex string) (string, error) {
+	defer env.trace(time.Now(), "WindowTitle", imageName, windowTitleRegex)
+	return WindowTitle(imageName, windowTitleRegex)
 }
 
-func (env *environment) isWsl() bool {
-	defer env.trace(time.Now(), "isWsl")
+func (env *environment) IsWsl() bool {
+	defer env.trace(time.Now(), "IsWsl")
 	return false
 }
 
-func (env *environment) isWsl2() bool {
-	defer env.trace(time.Now(), "isWsl2")
+func (env *environment) IsWsl2() bool {
+	defer env.trace(time.Now(), "IsWsl2")
 	return false
 }
 
-func (env *environment) getTerminalWidth() (int, error) {
-	defer env.trace(time.Now(), "getTerminalWidth")
+func (env *environment) TerminalWidth() (int, error) {
+	defer env.trace(time.Now(), "TerminalWidth")
 	handle, err := syscall.Open("CONOUT$", syscall.O_RDWR, 0)
 	if err != nil {
-		env.log(Error, "getTerminalWidth", err.Error())
+		env.log(Error, "TerminalWidth", err.Error())
 		return 0, err
 	}
 	info, err := winterm.GetConsoleScreenBufferInfo(uintptr(handle))
 	if err != nil {
-		env.log(Error, "getTerminalWidth", err.Error())
+		env.log(Error, "TerminalWidth", err.Error())
 		return 0, err
 	}
 	// return int(float64(info.Size.X) * 0.57), nil
 	return int(info.Size.X), nil
 }
 
-func (env *environment) getPlatform() string {
+func (env *environment) Platform() string {
 	return windowsPlatform
 }
 
-func (env *environment) getCachePath() string {
-	defer env.trace(time.Now(), "getCachePath")
+func (env *environment) CachePath() string {
+	defer env.trace(time.Now(), "CachePath")
 	// get LOCALAPPDATA if present
-	if cachePath := returnOrBuildCachePath(env.getenv("LOCALAPPDATA")); len(cachePath) != 0 {
+	if cachePath := returnOrBuildCachePath(env.Getenv("LOCALAPPDATA")); len(cachePath) != 0 {
 		return cachePath
 	}
-	return env.homeDir()
+	return env.Home()
 }
 
 //
@@ -123,8 +123,8 @@ func (env *environment) getCachePath() string {
 //
 // Returns a variant type if successful; nil and an error if not.
 //
-func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistryValue, error) {
-	env.trace(time.Now(), "getWindowsRegistryKeyValue", path)
+func (env *environment) WindowsRegistryKeyValue(path string) (*windowsRegistryValue, error) {
+	env.trace(time.Now(), "WindowsRegistryKeyValue", path)
 
 	// Format:
 	// "HKLM\Software\Microsoft\Windows NT\CurrentVersion\EditionID"
@@ -142,14 +142,14 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 
 	if len(regPathParts) < 2 {
 		errorLogMsg := fmt.Sprintf("Error, malformed registry path: '%s'", path)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
 	regRootHKeyHandle := getHKEYHandleFromAbbrString(regPathParts[0])
 	if regRootHKeyHandle == 0 {
 		errorLogMsg := fmt.Sprintf("Error, Supplied root HKEY value not valid: '%s'", regPathParts[0])
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -158,7 +158,7 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 
 	if lastSlash < 0 {
 		errorLogMsg := fmt.Sprintf("Error, malformed registry path: '%s'", path)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -170,13 +170,13 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	if len(regKeyLogged) == 0 {
 		regKeyLogged = "(Default)"
 	}
-	env.log(Debug, "getWindowsRegistryKeyValue", fmt.Sprintf("getWindowsRegistryKeyValue: root:\"%s\", path:\"%s\", key:\"%s\"", regPathParts[0], regPath, regKeyLogged))
+	env.log(Debug, "WindowsRegistryKeyValue", fmt.Sprintf("WindowsRegistryKeyValue: root:\"%s\", path:\"%s\", key:\"%s\"", regPathParts[0], regPath, regKeyLogged))
 
 	// Second part of split is registry path after HK part - needs to be UTF16 to pass to the windows. API
 	regPathUTF16, err := windows.UTF16FromString(regPath)
 	if err != nil {
 		errorLogMsg := fmt.Sprintf("Error, Could not convert supplied path '%s' to UTF16, error: '%s'", regPath, err)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -185,14 +185,14 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	regOpenErr := windows.RegOpenKeyEx(regRootHKeyHandle, &regPathUTF16[0], 0, windows.KEY_READ, &hKeyHandle)
 	if regOpenErr != nil {
 		errorLogMsg := fmt.Sprintf("Error RegOpenKeyEx opening registry path to '%s', error: '%s'", regPath, regOpenErr)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 	// Success - from here on out, when returning make sure to close that reg key with a deferred call to close:
 	defer func() {
 		err := windows.RegCloseKey(hKeyHandle)
 		if err != nil {
-			env.log(Error, "getWindowsRegistryKeyValue", fmt.Sprintf("Error closing registry key: %s", err))
+			env.log(Error, "WindowsRegistryKeyValue", fmt.Sprintf("Error closing registry key: %s", err))
 		}
 	}()
 
@@ -200,7 +200,7 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	regKeyUTF16, err := windows.UTF16FromString(regKey)
 	if err != nil {
 		errorLogMsg := fmt.Sprintf("Error, could not convert supplied key '%s' to UTF16, error: '%s'", regKey, err)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -211,7 +211,7 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	regQueryErr := windows.RegQueryValueEx(hKeyHandle, &regKeyUTF16[0], nil, &keyBufType, nil, &keyBufSize)
 	if regQueryErr != nil {
 		errorLogMsg := fmt.Sprintf("Error calling RegQueryValueEx to retrieve key data size with error '%s'", regQueryErr)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -221,7 +221,7 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	regQueryErr = windows.RegQueryValueEx(hKeyHandle, &regKeyUTF16[0], nil, &keyBufType, &keyBuf[0], &keyBufSize)
 	if regQueryErr != nil {
 		errorLogMsg := fmt.Sprintf("Error calling RegQueryValueEx to retrieve key data with error '%s'", regQueryErr)
-		env.log(Error, "getWindowsRegistryKeyValue", errorLogMsg)
+		env.log(Error, "WindowsRegistryKeyValue", errorLogMsg)
 		return nil, errors.New(errorLogMsg)
 	}
 
@@ -232,20 +232,20 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 		uint16p = (*uint16)(unsafe.Pointer(&keyBuf[0])) // nasty casty
 
 		valueString := windows.UTF16PtrToString(uint16p)
-		env.log(Debug, "getWindowsRegistryKeyValue", fmt.Sprintf("success, string: %s", valueString))
+		env.log(Debug, "WindowsRegistryKeyValue", fmt.Sprintf("success, string: %s", valueString))
 
 		return &windowsRegistryValue{valueType: regString, str: valueString}, nil
 	case windows.REG_DWORD:
 		var uint32p *uint32
 		uint32p = (*uint32)(unsafe.Pointer(&keyBuf[0])) // more casting goodness
 
-		env.log(Debug, "getWindowsRegistryKeyValue", fmt.Sprintf("success, DWORD, 0x%08X", *uint32p))
+		env.log(Debug, "WindowsRegistryKeyValue", fmt.Sprintf("success, DWORD, 0x%08X", *uint32p))
 		return &windowsRegistryValue{valueType: regDword, dword: *uint32p}, nil
 	case windows.REG_QWORD:
 		var uint64p *uint64
 		uint64p = (*uint64)(unsafe.Pointer(&keyBuf[0])) // more casting goodness
 
-		env.log(Debug, "getWindowsRegistryKeyValue", fmt.Sprintf("success, QWORD, 0x%016X", *uint64p))
+		env.log(Debug, "WindowsRegistryKeyValue", fmt.Sprintf("success, QWORD, 0x%016X", *uint64p))
 		return &windowsRegistryValue{valueType: regQword, qword: *uint64p}, nil
 	default:
 		errorLogMsg := fmt.Sprintf("Error, no formatter for REG_? type:%d, data size:%d bytes", keyBufType, keyBufSize)
@@ -253,15 +253,15 @@ func (env *environment) getWindowsRegistryKeyValue(path string) (*windowsRegistr
 	}
 }
 
-func (env *environment) inWSLSharedDrive() bool {
+func (env *environment) InWSLSharedDrive() bool {
 	return false
 }
 
-func (env *environment) convertToWindowsPath(path string) string {
+func (env *environment) ConvertToWindowsPath(path string) string {
 	return path
 }
 
-func (env *environment) convertToLinuxPath(path string) string {
+func (env *environment) ConvertToLinuxPath(path string) string {
 	return path
 }
 
@@ -273,8 +273,8 @@ var (
 	hWlanQueryInterface = hapi.NewProc("WlanQueryInterface")
 )
 
-func (env *environment) getWifiNetwork() (*wifiInfo, error) {
-	env.trace(time.Now(), "getWifiNetwork")
+func (env *environment) WifiNetwork() (*wifiInfo, error) {
+	env.trace(time.Now(), "WifiNetwork")
 	// Open handle
 	var pdwNegotiatedVersion uint32
 	var phClientHandle uint32

src/environment_windows_win32.go

@@ -33,8 +33,8 @@ func getImagePid(imageName string) ([]int, error) {
 	return pids, nil
 }
 
-// getWindowTitle returns the title of a window linked to a process name
-func getWindowTitle(imageName, windowTitleRegex string) (string, error) {
+// WindowTitle returns the title of a window linked to a process name
+func WindowTitle(imageName, windowTitleRegex string) (string, error) {
 	processPid, err := getImagePid(imageName)
 	if err != nil {
 		return "", nil

src/main.go

@@ -40,7 +40,7 @@ const (
 	plain       = "shell"
 )
 
-type args struct {
+type Args struct {
 	ErrorCode      *int
 	PrintConfig    *bool
 	ConfigFormat   *string
@@ -70,7 +70,7 @@ type args struct {
 }
 
 func main() {
-	args := &args{
+	args := &Args{
 		ErrorCode: flag.Int(
 			"error",
 			0,
@@ -183,9 +183,9 @@ func main() {
 	}
 	env := &environment{}
 	env.init(args)
-	defer env.close()
+	defer env.Close()
 	if *args.PrintShell {
-		fmt.Println(env.getShellName())
+		fmt.Println(env.Shell())
 		return
 	}
 	if *args.Millis {
@@ -193,7 +193,7 @@ func main() {
 		return
 	}
 	if *args.CachePath {
-		fmt.Print(env.getCachePath())
+		fmt.Print(env.CachePath())
 		return
 	}
 	if *args.Init {
@@ -212,7 +212,7 @@ func main() {
 	}
 	cfg := GetConfig(env)
 	ansi := &ansiUtils{}
-	ansi.init(env.getShellName())
+	ansi.init(env.Shell())
 	var writer promptWriter
 	if *args.Plain {
 		writer = &PlainWriter{}

src/main_test.go

@@ -18,12 +18,11 @@ func TestConsoleBackgroundColorTemplate(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("templateCache").Return(&templateCache{
+		env.On("TemplateCache").Return(&TemplateCache{
 			Env: map[string]string{
 				"TERM_PROGRAM": tc.Term,
 			},
 		})
-		env.onTemplate()
 		color := getConsoleBackgroundColor(env, "{{ if eq \"vscode\" .Env.TERM_PROGRAM }}#123456{{end}}")
 		assert.Equal(t, tc.Expected, color, tc.Case)
 	}

src/regex.go

@@ -82,7 +82,7 @@ func matchString(pattern, text string) bool {
 
 func dirMatchesOneOf(env Environment, dir string, regexes []string) bool {
 	normalizedCwd := strings.ReplaceAll(dir, "\\", "/")
-	normalizedHomeDir := strings.ReplaceAll(env.homeDir(), "\\", "/")
+	normalizedHomeDir := strings.ReplaceAll(env.Home(), "\\", "/")
 
 	for _, element := range regexes {
 		normalizedElement := strings.ReplaceAll(element, "\\\\", "/")
@@ -90,7 +90,7 @@ func dirMatchesOneOf(env Environment, dir string, regexes []string) bool {
 			normalizedElement = strings.Replace(normalizedElement, "~", normalizedHomeDir, 1)
 		}
 		pattern := fmt.Sprintf("^%s$", normalizedElement)
-		goos := env.getRuntimeGOOS()
+		goos := env.GOOS()
 		if goos == windowsPlatform || goos == darwinPlatform {
 			pattern = "(?i)" + pattern
 		}

src/regex_test.go

@@ -32,8 +32,8 @@ func TestDirMatchesOneOf(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
-		env.On("homeDir").Return(tc.HomeDir)
+		env.On("GOOS").Return(tc.GOOS)
+		env.On("Home").Return(tc.HomeDir)
 		got := dirMatchesOneOf(env, tc.Dir, []string{tc.Pattern})
 		assert.Equal(t, tc.Expected, got)
 	}

src/scm.go

@@ -75,6 +75,6 @@ func (s *scm) shouldIgnoreRootRepository(rootDir string) bool {
 	return dirMatchesOneOf(s.env, rootDir, excludedFolders)
 }
 
-func (s *scm) getFileContents(folder, file string) string {
-	return strings.Trim(s.env.getFileContent(folder+"/"+file), " \r\n")
+func (s *scm) FileContents(folder, file string) string {
+	return strings.Trim(s.env.FileContent(folder+"/"+file), " \r\n")
 }

src/scm_test.go

@@ -174,8 +174,8 @@ func TestScmShouldIgnoreRootRepository(t *testing.T) {
 			},
 		}
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return("/home/bill")
-		env.On("getRuntimeGOOS").Return(windowsPlatform)
+		env.On("Home").Return("/home/bill")
+		env.On("GOOS").Return(windowsPlatform)
 		s := &scm{
 			props: props,
 			env:   env,

src/segment.go

@@ -50,7 +50,7 @@ type Properties interface {
 // SegmentWriter is the interface used to define what and if to write to the prompt
 type SegmentWriter interface {
 	enabled() bool
-	string() string
+	template() string
 	init(props Properties, env Environment)
 }
 
@@ -156,7 +156,16 @@ const (
 )
 
 func (segment *Segment) string() string {
-	return segment.writer.string()
+	template := &textTemplate{
+		Template: segment.writer.template(),
+		Context:  segment.writer,
+		Env:      segment.env,
+	}
+	text, err := template.render()
+	if err != nil {
+		return err.Error()
+	}
+	return text
 }
 
 func (segment *Segment) enabled() bool {
@@ -191,7 +200,7 @@ func (segment *Segment) cwdIncluded() bool {
 		return true
 	}
 
-	return dirMatchesOneOf(segment.env, segment.env.pwd(), list)
+	return dirMatchesOneOf(segment.env, segment.env.Pwd(), list)
 }
 
 func (segment *Segment) cwdExcluded() bool {
@@ -200,7 +209,7 @@ func (segment *Segment) cwdExcluded() bool {
 		value = segment.Properties[IgnoreFolders]
 	}
 	list := parseStringArray(value)
-	return dirMatchesOneOf(segment.env, segment.env.pwd(), list)
+	return dirMatchesOneOf(segment.env, segment.env.Pwd(), list)
 }
 
 func (segment *Segment) getColor(templates []string, defaultColor string) string {

src/segment_angular.go

@@ -9,9 +9,8 @@ type angular struct {
 	language
 }
 
-func (a *angular) string() string {
-	segmentTemplate := a.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return a.language.string(segmentTemplate, a)
+func (a *angular) template() string {
+	return languageTemplate
 }
 
 func (a *angular) init(props Properties, env Environment) {
@@ -25,13 +24,13 @@ func (a *angular) init(props Properties, env Environment) {
 				getVersion: func() (string, error) {
 					const fileName string = "package.json"
 					const fileFolder string = "/node_modules/@angular/core"
-					angularFilePath := a.language.env.pwd() + fileFolder
-					if !a.language.env.hasFilesInDir(angularFilePath, fileName) {
+					angularFilePath := a.language.env.Pwd() + fileFolder
+					if !a.language.env.HasFilesInDir(angularFilePath, fileName) {
 						return "", fmt.Errorf("%s not found in %s", fileName, angularFilePath)
 					}
 					// parse file
 					objmap := map[string]json.RawMessage{}
-					content := a.language.env.getFileContent(a.language.env.pwd() + fileFolder + "/" + fileName)
+					content := a.language.env.FileContent(a.language.env.Pwd() + fileFolder + "/" + fileName)
 					err := json.Unmarshal([]byte(content), &objmap)
 					if err != nil {
 						return "", err

src/segment_angular_test.go

@@ -10,11 +10,11 @@ import (
 func TestAngularCliVersionDisplayed(t *testing.T) {
 	cases := []struct {
 		Case        string
-		ExpectedString string
+		FullVersion string
 		Version     string
 	}{
-		{Case: "Angular 13.0.3", ExpectedString: "13.0.3", Version: "{ \"name\": \"@angular/core\",\"version\": \"13.0.3\"}"},
-		{Case: "Angular 11.0.1", ExpectedString: "11.0.1", Version: "{ \"name\": \"@angular/core\",\"version\": \"11.0.1\"}"},
+		{Case: "Angular 13.0.3", FullVersion: "13.0.3", Version: "{ \"name\": \"@angular/core\",\"version\": \"13.0.3\"}"},
+		{Case: "Angular 11.0.1", FullVersion: "11.0.1", Version: "{ \"name\": \"@angular/core\",\"version\": \"11.0.1\"}"},
 	}
 
 	for _, ta := range cases {
@@ -24,16 +24,18 @@ func TestAngularCliVersionDisplayed(t *testing.T) {
 
 		var env = new(MockedEnvironment)
 		// mock  getVersion methods
-		env.On("pwd").Return("/usr/home/dev/my-app")
-		env.On("homeDir").Return("/usr/home")
-		env.On("hasFiles", params.extension).Return(true)
-		env.On("hasFilesInDir", "/usr/home/dev/my-app/node_modules/@angular/core", "package.json").Return(true)
-		env.On("getFileContent", "/usr/home/dev/my-app/node_modules/@angular/core/package.json").Return(ta.Version)
-		env.onTemplate()
+		env.On("Pwd").Return("/usr/home/dev/my-app")
+		env.On("Home").Return("/usr/home")
+		env.On("HasFiles", params.extension).Return(true)
+		env.On("HasFilesInDir", "/usr/home/dev/my-app/node_modules/@angular/core", "package.json").Return(true)
+		env.On("FileContent", "/usr/home/dev/my-app/node_modules/@angular/core/package.json").Return(ta.Version)
+		env.On("TemplateCache").Return(&TemplateCache{
+			Env: make(map[string]string),
+		})
 		props := properties{}
 		angular := &angular{}
 		angular.init(props, env)
 		assert.True(t, angular.enabled(), fmt.Sprintf("Failed in case: %s", ta.Case))
-		assert.Equal(t, ta.ExpectedString, angular.string(), fmt.Sprintf("Failed in case: %s", ta.Case))
+		assert.Equal(t, ta.FullVersion, renderTemplate(env, angular.template(), angular), fmt.Sprintf("Failed in case: %s", ta.Case))
 	}
 }

src/segment_aws.go

@@ -16,6 +16,10 @@ const (
 	defaultUser = "default"
 )
 
+func (a *aws) template() string {
+	return "{{ .Profile }}{{ if .Region }}@{{ .Region }}{{ end }}"
+}
+
 func (a *aws) init(props Properties, env Environment) {
 	a.props = props
 	a.env = env
@@ -24,7 +28,7 @@ func (a *aws) init(props Properties, env Environment) {
 func (a *aws) enabled() bool {
 	getEnvFirstMatch := func(envs ...string) string {
 		for _, env := range envs {
-			value := a.env.getenv(env)
+			value := a.env.Getenv(env)
 			if value != "" {
 				return value
 			}
@@ -52,11 +56,11 @@ func (a *aws) enabled() bool {
 }
 
 func (a *aws) getConfigFileInfo() {
-	configPath := a.env.getenv("AWS_CONFIG_FILE")
+	configPath := a.env.Getenv("AWS_CONFIG_FILE")
 	if configPath == "" {
-		configPath = fmt.Sprintf("%s/.aws/config", a.env.homeDir())
+		configPath = fmt.Sprintf("%s/.aws/config", a.env.Home())
 	}
-	config := a.env.getFileContent(configPath)
+	config := a.env.FileContent(configPath)
 	configSection := "[default]"
 	if a.Profile != "" {
 		configSection = fmt.Sprintf("[profile %s]", a.Profile)
@@ -80,17 +84,3 @@ func (a *aws) getConfigFileInfo() {
 		a.Profile = defaultUser
 	}
 }
-
-func (a *aws) string() string {
-	segmentTemplate := a.props.getString(SegmentTemplate, "{{.Profile}}{{if .Region}}@{{.Region}}{{end}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  a,
-		Env:      a.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}

src/segment_aws_test.go

@@ -47,26 +47,24 @@ func TestAWSSegment(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getenv", "AWS_VAULT").Return(tc.Vault)
-		env.On("getenv", "AWS_PROFILE").Return(tc.Profile)
-		env.On("getenv", "AWS_REGION").Return(tc.Region)
-		env.On("getenv", "AWS_DEFAULT_REGION").Return(tc.DefaultRegion)
-		env.On("getenv", "AWS_CONFIG_FILE").Return(tc.ConfigFile)
-		env.On("getFileContent", "/usr/home/.aws/config").Return("")
-		env.On("homeDir").Return("/usr/home")
-		env.onTemplate()
+		env.On("Getenv", "AWS_VAULT").Return(tc.Vault)
+		env.On("Getenv", "AWS_PROFILE").Return(tc.Profile)
+		env.On("Getenv", "AWS_REGION").Return(tc.Region)
+		env.On("Getenv", "AWS_DEFAULT_REGION").Return(tc.DefaultRegion)
+		env.On("Getenv", "AWS_CONFIG_FILE").Return(tc.ConfigFile)
+		env.On("FileContent", "/usr/home/.aws/config").Return("")
+		env.On("Home").Return("/usr/home")
 		props := properties{
 			DisplayDefault: tc.DisplayDefault,
 		}
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
-
 		aws := &aws{
 			env:   env,
 			props: props,
 		}
+		if tc.Template == "" {
+			tc.Template = aws.template()
+		}
 		assert.Equal(t, tc.ExpectedEnabled, aws.enabled(), tc.Case)
-		assert.Equal(t, tc.ExpectedString, aws.string(), tc.Case)
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, aws), tc.Case)
 	}
 }

src/segment_az.go

@@ -78,18 +78,8 @@ type AzurePowerShellSubscription struct {
 	} `json:"Environment"`
 }
 
-func (a *az) string() string {
-	segmentTemplate := a.props.getString(SegmentTemplate, "{{ .Name }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  a,
-		Env:      a.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (a *az) template() string {
+	return "{{ .Name }}"
 }
 
 func (a *az) init(props Properties, env Environment) {
@@ -101,16 +91,16 @@ func (a *az) enabled() bool {
 	return a.getAzureProfile() || a.getAzureRmContext()
 }
 
-func (a *az) getFileContentWithoutBom(file string) string {
-	config := a.env.getFileContent(file)
+func (a *az) FileContentWithoutBom(file string) string {
+	config := a.env.FileContent(file)
 	const ByteOrderMark = "\ufeff"
 	return strings.TrimLeft(config, ByteOrderMark)
 }
 
 func (a *az) getAzureProfile() bool {
 	var content string
-	profile := filepath.Join(a.env.homeDir(), ".azure", "azureProfile.json")
-	if content = a.getFileContentWithoutBom(profile); len(content) == 0 {
+	profile := filepath.Join(a.env.Home(), ".azure", "azureProfile.json")
+	if content = a.FileContentWithoutBom(profile); len(content) == 0 {
 		return false
 	}
 	var config AzureConfig
@@ -130,11 +120,11 @@ func (a *az) getAzureProfile() bool {
 func (a *az) getAzureRmContext() bool {
 	var content string
 	profiles := []string{
-		filepath.Join(a.env.homeDir(), ".azure", "AzureRmContext.json"),
-		filepath.Join(a.env.homeDir(), ".Azure", "AzureRmContext.json"),
+		filepath.Join(a.env.Home(), ".azure", "AzureRmContext.json"),
+		filepath.Join(a.env.Home(), ".Azure", "AzureRmContext.json"),
 	}
 	for _, profile := range profiles {
-		if content = a.getFileContentWithoutBom(profile); len(content) != 0 {
+		if content = a.FileContentWithoutBom(profile); len(content) != 0 {
 			break
 		}
 	}

src/segment_az_functions.go

@@ -4,9 +4,8 @@ type azfunc struct {
 	language
 }
 
-func (az *azfunc) string() string {
-	segmentTemplate := az.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return az.language.string(segmentTemplate, az)
+func (az *azfunc) template() string {
+	return languageTemplate
 }
 
 func (az *azfunc) init(props Properties, env Environment) {

src/segment_az_test.go

@@ -69,7 +69,7 @@ func TestAzSegment(t *testing.T) {
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
 		home := "/Users/posh"
-		env.On("homeDir").Return(home)
+		env.On("Home").Return(home)
 		var azureProfile, azureRmContext, azureRMContext string
 		if tc.HasCLI {
 			content, _ := ioutil.ReadFile("./test/azureProfile.json")
@@ -83,19 +83,15 @@ func TestAzSegment(t *testing.T) {
 			content, _ := ioutil.ReadFile("./test/AzureRmContext.json")
 			azureRMContext = string(content)
 		}
-		env.On("getRuntimeGOOS").Return(linuxPlatform)
-		env.On("getFileContent", filepath.Join(home, ".azure", "azureProfile.json")).Return(azureProfile)
-		env.On("getFileContent", filepath.Join(home, ".Azure", "AzureRmContext.json")).Return(azureRmContext)
-		env.On("getFileContent", filepath.Join(home, ".azure", "AzureRmContext.json")).Return(azureRMContext)
-		env.onTemplate()
-		props := properties{
-			SegmentTemplate: tc.Template,
-		}
+		env.On("GOOS").Return(linuxPlatform)
+		env.On("FileContent", filepath.Join(home, ".azure", "azureProfile.json")).Return(azureProfile)
+		env.On("FileContent", filepath.Join(home, ".Azure", "AzureRmContext.json")).Return(azureRmContext)
+		env.On("FileContent", filepath.Join(home, ".azure", "AzureRmContext.json")).Return(azureRMContext)
 		az := &az{
 			env:   env,
-			props: props,
+			props: properties{},
 		}
 		assert.Equal(t, tc.ExpectedEnabled, az.enabled(), tc.Case)
-		assert.Equal(t, tc.ExpectedString, az.string(), tc.Case)
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, az), tc.Case)
 	}
 }

src/segment_battery.go

@@ -25,8 +25,12 @@ const (
 	ChargedIcon Property = "charged_icon"
 )
 
+func (b *batt) template() string {
+	return "{{ if not .Error }}{{.Icon}}{{.Percentage}}{{ end }}{{.Error}}"
+}
+
 func (b *batt) enabled() bool {
-	batteries, err := b.env.getBatteryInfo()
+	batteries, err := b.env.BatteryInfo()
 
 	if !b.enabledWhileError(err) {
 		return false
@@ -99,20 +103,6 @@ func (b *batt) mapMostLogicalState(currentState, newState battery.State) battery
 	return newState
 }
 
-func (b *batt) string() string {
-	segmentTemplate := b.props.getString(SegmentTemplate, "{{ if not .Error }}{{.Icon}}{{.Percentage}}{{ end }}{{.Error}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  b,
-		Env:      b.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (b *batt) init(props Properties, env Environment) {
 	b.props = props
 	b.env = env

src/segment_battery_test.go

@@ -7,82 +7,6 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestGetBatteryColors(t *testing.T) {
-	cases := []struct {
-		Case          string
-		ExpectedColor string
-		Templates     []string
-		DefaultColor  string
-		Battery       *battery.Battery
-		Percentage    int
-	}{
-		{
-			Case:          "Percentage lower",
-			ExpectedColor: "color2",
-			DefaultColor:  "color",
-			Templates: []string{
-				"{{if (lt .Percentage 60)}}color2{{end}}",
-				"{{if (gt .Percentage 60)}}color3{{end}}",
-			},
-			Percentage: 50,
-		},
-		{
-			Case:          "Percentage higher",
-			ExpectedColor: "color3",
-			DefaultColor:  "color",
-			Templates: []string{
-				"{{if (lt .Percentage 60)}}color2{{end}}",
-				"{{if (gt .Percentage 60)}}color3{{end}}",
-			},
-			Percentage: 70,
-		},
-		{
-			Case:          "Charging",
-			ExpectedColor: "color2",
-			DefaultColor:  "color",
-			Templates: []string{
-				"{{if eq \"Charging\" .Battery.State.String}}color2{{end}}",
-				"{{if eq \"Discharging\" .Battery.State.String}}color3{{end}}",
-				"{{if eq \"Full\" .Battery.State.String}}color4{{end}}",
-			},
-			Battery: &battery.Battery{
-				State: battery.Charging,
-			},
-		},
-		{
-			Case:          "Discharging",
-			ExpectedColor: "color3",
-			DefaultColor:  "color",
-			Templates: []string{
-				"{{if eq \"Charging\" .Battery.State.String}}color2{{end}}",
-				"{{if eq \"Discharging\" .Battery.State.String}}color3{{end}}",
-				"{{if eq \"Full\" .Battery.State.String}}color2{{end}}",
-			},
-			Battery: &battery.Battery{
-				State: battery.Discharging,
-			},
-		},
-	}
-	for _, tc := range cases {
-		env := new(MockedEnvironment)
-		env.onTemplate()
-		batt := &batt{
-			Percentage: tc.Percentage,
-		}
-		if tc.Battery != nil {
-			batt.Battery = *tc.Battery
-		}
-		segment := &Segment{
-			writer: batt,
-			env:    env,
-		}
-		segment.Foreground = tc.DefaultColor
-		segment.ForegroundTemplates = tc.Templates
-		color := segment.foreground()
-		assert.Equal(t, tc.ExpectedColor, color, tc.Case)
-	}
-}
-
 func TestMapBatteriesState(t *testing.T) {
 	cases := []struct {
 		Case          string

src/segment_brewfather.go

@@ -98,6 +98,10 @@ type Batch struct {
 	TemperatureTrend float64 // diff between this and last, short term trend
 }
 
+func (bf *brewfather) template() string {
+	return DefaultTemplate
+}
+
 func (bf *brewfather) enabled() bool {
 	data, err := bf.getResult()
 	if err != nil {
@@ -197,24 +201,9 @@ func (bf *brewfather) getBatchStatusIcon(batchStatus string) string {
 	}
 }
 
-func (bf *brewfather) string() string {
-	segmentTemplate := bf.props.getString(SegmentTemplate, DefaultTemplate)
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  bf,
-		Env:      bf.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-
-	return text
-}
-
 func (bf *brewfather) getResult() (*Batch, error) {
 	getFromCache := func(key string) (*Batch, error) {
-		val, found := bf.env.cache().get(key)
+		val, found := bf.env.Cache().Get(key)
 		// we got something from the cache
 		if found {
 			var result Batch
@@ -232,7 +221,7 @@ func (bf *brewfather) getResult() (*Batch, error) {
 			return err
 		}
 
-		bf.env.cache().set(key, string(cacheJSON), cacheTimeout)
+		bf.env.Cache().Set(key, string(cacheJSON), cacheTimeout)
 
 		return nil
 	}

src/segment_brewfather_test.go

@@ -145,16 +145,12 @@ func TestBrewfatherSegment(t *testing.T) {
 		}
 
 		cache := &MockedCache{}
-		cache.On("get", BFCacheKey).Return(nil, false) // cache testing later because cache is a little more complicated than just the single response.
-		// cache.On("set", BFCacheKey, tc.JSONResponse, tc.CacheTimeout).Return()
+		cache.On("Get", BFCacheKey).Return(nil, false) // cache testing later because cache is a little more complicated than just the single response.
+		// cache.On("Set", BFCacheKey, tc.JSONResponse, tc.CacheTimeout).Return()
 
 		env.On("HTTPRequest", BFBatchURL).Return([]byte(tc.BatchJSONResponse), tc.Error)
 		env.On("HTTPRequest", BFBatchReadingsURL).Return([]byte(tc.BatchReadingsJSONResponse), tc.Error)
-		env.On("cache").Return(cache)
-		env.onTemplate()
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
+		env.On("Cache").Return(cache)
 
 		ns := &brewfather{
 			props: props,
@@ -167,6 +163,9 @@ func TestBrewfatherSegment(t *testing.T) {
 			continue
 		}
 
-		assert.Equal(t, tc.ExpectedString, ns.string(), tc.Case)
+		if tc.Template == "" {
+			tc.Template = ns.template()
+		}
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, ns), tc.Case)
 	}
 }

src/segment_command.go

@@ -16,16 +16,20 @@ const (
 	Command Property = "command"
 )
 
+func (c *command) template() string {
+	return "{{ .Output }}"
+}
+
 func (c *command) enabled() bool {
 	shell := c.props.getString(ExecutableShell, "bash")
-	if !c.env.hasCommand(shell) {
+	if !c.env.HasCommand(shell) {
 		return false
 	}
 	command := c.props.getString(Command, "echo no command specified")
 	if strings.Contains(command, "||") {
 		commands := strings.Split(command, "||")
 		for _, cmd := range commands {
-			output := c.env.runShellCommand(shell, strings.TrimSpace(cmd))
+			output := c.env.RunShellCommand(shell, strings.TrimSpace(cmd))
 			if output != "" {
 				c.Output = output
 				return true
@@ -36,29 +40,15 @@ func (c *command) enabled() bool {
 		var output string
 		commands := strings.Split(command, "&&")
 		for _, cmd := range commands {
-			output += c.env.runShellCommand(shell, strings.TrimSpace(cmd))
+			output += c.env.RunShellCommand(shell, strings.TrimSpace(cmd))
 		}
 		c.Output = output
 		return c.Output != ""
 	}
-	c.Output = c.env.runShellCommand(shell, strings.TrimSpace(command))
+	c.Output = c.env.RunShellCommand(shell, strings.TrimSpace(command))
 	return c.Output != ""
 }
 
-func (c *command) string() string {
-	segmentTemplate := c.props.getString(SegmentTemplate, "{{.Output}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  c,
-		Env:      c.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (c *command) init(props Properties, env Environment) {
 	c.props = props
 	c.env = env

src/segment_command_test.go

@@ -8,9 +8,8 @@ import (
 
 func TestExecuteCommand(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo hello").Return("hello")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo hello").Return("hello")
 	props := properties{
 		Command: "echo hello",
 	}
@@ -20,16 +19,15 @@ func TestExecuteCommand(t *testing.T) {
 	}
 	enabled := c.enabled()
 	assert.True(t, enabled)
-	assert.Equal(t, "hello", c.string())
+	assert.Equal(t, "hello", renderTemplate(env, c.template(), c))
 }
 
 func TestExecuteMultipleCommandsOrFirst(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "exit 1").Return("")
-	env.On("runShellCommand", "bash", "echo hello").Return("hello")
-	env.On("runShellCommand", "bash", "exit 1 || echo hello").Return("hello")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "exit 1").Return("")
+	env.On("RunShellCommand", "bash", "echo hello").Return("hello")
+	env.On("RunShellCommand", "bash", "exit 1 || echo hello").Return("hello")
 	props := properties{
 		Command: "exit 1 || echo hello",
 	}
@@ -39,15 +37,14 @@ func TestExecuteMultipleCommandsOrFirst(t *testing.T) {
 	}
 	enabled := c.enabled()
 	assert.True(t, enabled)
-	assert.Equal(t, "hello", c.string())
+	assert.Equal(t, "hello", renderTemplate(env, c.template(), c))
 }
 
 func TestExecuteMultipleCommandsOrSecond(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo hello").Return("hello")
-	env.On("runShellCommand", "bash", "echo world").Return("world")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo hello").Return("hello")
+	env.On("RunShellCommand", "bash", "echo world").Return("world")
 	props := properties{
 		Command: "echo hello || echo world",
 	}
@@ -57,15 +54,14 @@ func TestExecuteMultipleCommandsOrSecond(t *testing.T) {
 	}
 	enabled := c.enabled()
 	assert.True(t, enabled)
-	assert.Equal(t, "hello", c.string())
+	assert.Equal(t, "hello", renderTemplate(env, c.template(), c))
 }
 
 func TestExecuteMultipleCommandsAnd(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo hello").Return("hello")
-	env.On("runShellCommand", "bash", "echo world").Return("world")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo hello").Return("hello")
+	env.On("RunShellCommand", "bash", "echo world").Return("world")
 	props := properties{
 		Command: "echo hello && echo world",
 	}
@@ -75,14 +71,13 @@ func TestExecuteMultipleCommandsAnd(t *testing.T) {
 	}
 	enabled := c.enabled()
 	assert.True(t, enabled)
-	assert.Equal(t, "helloworld", c.string())
+	assert.Equal(t, "helloworld", renderTemplate(env, c.template(), c))
 }
 
 func TestExecuteSingleCommandEmpty(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "").Return("")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "").Return("")
 	props := properties{
 		Command: "",
 	}
@@ -96,9 +91,8 @@ func TestExecuteSingleCommandEmpty(t *testing.T) {
 
 func TestExecuteSingleCommandNoCommandProperty(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo no command specified").Return("no command specified")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo no command specified").Return("no command specified")
 	var props properties
 	c := &command{
 		props: props,
@@ -111,9 +105,8 @@ func TestExecuteSingleCommandNoCommandProperty(t *testing.T) {
 
 func TestExecuteMultipleCommandsAndDisabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo").Return("")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo").Return("")
 	props := properties{
 		Command: "echo && echo",
 	}
@@ -127,10 +120,9 @@ func TestExecuteMultipleCommandsAndDisabled(t *testing.T) {
 
 func TestExecuteMultipleCommandsOrDisabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "bash").Return(true)
-	env.On("runShellCommand", "bash", "echo").Return("")
-	env.On("runShellCommand", "bash", "echo|| echo").Return("")
-	env.onTemplate()
+	env.On("HasCommand", "bash").Return(true)
+	env.On("RunShellCommand", "bash", "echo").Return("")
+	env.On("RunShellCommand", "bash", "echo|| echo").Return("")
 	props := properties{
 		Command: "echo|| echo",
 	}

src/segment_crystal.go

@@ -4,9 +4,8 @@ type crystal struct {
 	language
 }
 
-func (c *crystal) string() string {
-	segmentTemplate := c.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return c.language.string(segmentTemplate, c)
+func (c *crystal) template() string {
+	return languageTemplate
 }
 
 func (c *crystal) init(props Properties, env Environment) {

src/segment_crystal_test.go

@@ -26,6 +26,6 @@ func TestCrystal(t *testing.T) {
 		c := &crystal{}
 		c.init(props, env)
 		assert.True(t, c.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, c.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, c.template(), c), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_dart.go

@@ -4,9 +4,8 @@ type dart struct {
 	language
 }
 
-func (d *dart) string() string {
-	segmentTemplate := d.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return d.language.string(segmentTemplate, d)
+func (d *dart) template() string {
+	return languageTemplate
 }
 
 func (d *dart) init(props Properties, env Environment) {

src/segment_dart_test.go

@@ -26,6 +26,6 @@ func TestDart(t *testing.T) {
 		d := &dart{}
 		d.init(props, env)
 		assert.True(t, d.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, d.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, d.template(), d), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_dotnet.go

@@ -6,9 +6,8 @@ type dotnet struct {
 	Unsupported bool
 }
 
-func (d *dotnet) string() string {
-	segmentTemplate := d.language.props.getString(SegmentTemplate, "{{ if .Unsupported }}\uf071{{ else }}{{ .Full }}{{ end }}")
-	return d.language.string(segmentTemplate, d)
+func (d *dotnet) template() string {
+	return "{{ if .Unsupported }}\uf071{{ else }}{{ .Full }}{{ end }}"
 }
 
 func (d *dotnet) init(props Properties, env Environment) {

src/segment_dotnet_test.go

@@ -6,76 +6,44 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-type dotnetArgs struct {
-	enabled         bool
-	version         string
-	exitCode        int
-	unsupportedIcon string
-	displayVersion  bool
+func TestDotnetSegment(t *testing.T) {
+	cases := []struct {
+		Case         string
+		Expected     string
+		ExitCode     int
+		HasCommand   bool
+		Version      string
+		FetchVersion bool
+	}{
+		{Case: "Unsupported version", Expected: "\uf071", HasCommand: true, FetchVersion: true, ExitCode: dotnetExitCode, Version: "3.1.402"},
+		{Case: "Regular version", Expected: "3.1.402", HasCommand: true, FetchVersion: true, Version: "3.1.402"},
+		{Case: "Regular version", Expected: "", HasCommand: true, FetchVersion: false, Version: "3.1.402"},
+		{Case: "Regular version", Expected: "", HasCommand: false, FetchVersion: false, Version: "3.1.402"},
 	}
 
-func bootStrapDotnetTest(args *dotnetArgs) *dotnet {
+	for _, tc := range cases {
 		env := new(MockedEnvironment)
-	env.On("hasCommand", "dotnet").Return(args.enabled)
-	if args.exitCode != 0 {
-		err := &commandError{exitCode: args.exitCode}
-		env.On("runCommand", "dotnet", []string{"--version"}).Return("", err)
+		env.On("HasCommand", "dotnet").Return(tc.HasCommand)
+		if tc.ExitCode != 0 {
+			err := &commandError{exitCode: tc.ExitCode}
+			env.On("RunCommand", "dotnet", []string{"--version"}).Return("", err)
 		} else {
-		env.On("runCommand", "dotnet", []string{"--version"}).Return(args.version, nil)
+			env.On("RunCommand", "dotnet", []string{"--version"}).Return(tc.Version, nil)
 		}
 
-	env.On("hasFiles", "*.cs").Return(true)
-	env.On("getPathSeperator").Return("")
-	env.On("pwd").Return("/usr/home/project")
-	env.On("homeDir").Return("/usr/home")
-	env.onTemplate()
+		env.On("HasFiles", "*.cs").Return(true)
+		env.On("PathSeperator").Return("")
+		env.On("Pwd").Return("/usr/home/project")
+		env.On("Home").Return("/usr/home")
+		env.On("TemplateCache").Return(&TemplateCache{
+			Env: make(map[string]string),
+		})
 		props := properties{
-		FetchVersion: args.displayVersion,
+			FetchVersion: tc.FetchVersion,
 		}
 		dotnet := &dotnet{}
 		dotnet.init(props, env)
-	return dotnet
-}
-
-func TestEnabledDotnetNotFound(t *testing.T) {
-	args := &dotnetArgs{
-		enabled: false,
-	}
-	dotnet := bootStrapDotnetTest(args)
 		assert.True(t, dotnet.enabled())
+		assert.Equal(t, tc.Expected, renderTemplate(env, dotnet.template(), dotnet), tc.Case)
 	}
-
-func TestDotnetVersionNotDisplayed(t *testing.T) {
-	args := &dotnetArgs{
-		enabled:        true,
-		displayVersion: false,
-		version:        "3.1.402",
-	}
-	dotnet := bootStrapDotnetTest(args)
-	assert.True(t, dotnet.enabled())
-	assert.Equal(t, "", dotnet.string())
-}
-
-func TestDotnetVersionDisplayed(t *testing.T) {
-	expected := "3.1.402"
-	args := &dotnetArgs{
-		enabled:        true,
-		displayVersion: true,
-		version:        expected,
-	}
-	dotnet := bootStrapDotnetTest(args)
-	assert.True(t, dotnet.enabled())
-	assert.Equal(t, expected, dotnet.string())
-}
-
-func TestDotnetVersionUnsupported(t *testing.T) {
-	args := &dotnetArgs{
-		enabled:         true,
-		displayVersion:  true,
-		exitCode:        dotnetExitCode,
-		unsupportedIcon: expected,
-	}
-	dotnet := bootStrapDotnetTest(args)
-	assert.True(t, dotnet.enabled())
-	assert.Equal(t, "\uf071", dotnet.string())
 }

src/segment_executiontime.go

@@ -48,7 +48,7 @@ const (
 
 func (t *executiontime) enabled() bool {
 	alwaysEnabled := t.props.getBool(AlwaysEnabled, false)
-	executionTimeMs := t.env.executionTime()
+	executionTimeMs := t.env.ExecutionTime()
 	thresholdMs := t.props.getFloat64(ThresholdProperty, float64(500))
 	if !alwaysEnabled && executionTimeMs < thresholdMs {
 		return false
@@ -59,18 +59,8 @@ func (t *executiontime) enabled() bool {
 	return t.FormattedMs != ""
 }
 
-func (t *executiontime) string() string {
-	segmentTemplate := t.props.getString(SegmentTemplate, "{{.FormattedMs}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  t,
-		Env:      t.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (t *executiontime) template() string {
+	return "{{ .FormattedMs }}"
 }
 
 func (t *executiontime) init(props Properties, env Environment) {

src/segment_executiontime_test.go

@@ -9,7 +9,7 @@ import (
 
 func TestExecutionTimeWriterDefaultThresholdEnabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(1337)
+	env.On("ExecutionTime").Return(1337)
 	executionTime := &executiontime{
 		env:   env,
 		props: properties{},
@@ -19,7 +19,7 @@ func TestExecutionTimeWriterDefaultThresholdEnabled(t *testing.T) {
 
 func TestExecutionTimeWriterDefaultThresholdDisabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(1)
+	env.On("ExecutionTime").Return(1)
 	executionTime := &executiontime{
 		env:   env,
 		props: properties{},
@@ -29,7 +29,7 @@ func TestExecutionTimeWriterDefaultThresholdDisabled(t *testing.T) {
 
 func TestExecutionTimeWriterCustomThresholdEnabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(99)
+	env.On("ExecutionTime").Return(99)
 	props := properties{
 		ThresholdProperty: float64(10),
 	}
@@ -42,7 +42,7 @@ func TestExecutionTimeWriterCustomThresholdEnabled(t *testing.T) {
 
 func TestExecutionTimeWriterCustomThresholdDisabled(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(99)
+	env.On("ExecutionTime").Return(99)
 	props := properties{
 		ThresholdProperty: float64(100),
 	}
@@ -57,7 +57,7 @@ func TestExecutionTimeWriterDuration(t *testing.T) {
 	input := 1337
 	expected := "1.337s"
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(input)
+	env.On("ExecutionTime").Return(input)
 	executionTime := &executiontime{
 		env:   env,
 		props: properties{},
@@ -70,7 +70,7 @@ func TestExecutionTimeWriterDuration2(t *testing.T) {
 	input := 13371337
 	expected := "3h 42m 51.337s"
 	env := new(MockedEnvironment)
-	env.On("executionTime").Return(input)
+	env.On("ExecutionTime").Return(input)
 	executionTime := &executiontime{
 		env:   env,
 		props: properties{},

src/segment_exit.go

@@ -9,26 +9,16 @@ type exit struct {
 	Text string
 }
 
+func (e *exit) template() string {
+	return "{{ .Text }}"
+}
+
 func (e *exit) enabled() bool {
-	e.Text = e.getMeaningFromExitCode(e.env.lastErrorCode())
+	e.Text = e.getMeaningFromExitCode(e.env.ErrorCode())
 	if e.props.getBool(AlwaysEnabled, false) {
 		return true
 	}
-	return e.env.lastErrorCode() != 0
-}
-
-func (e *exit) string() string {
-	segmentTemplate := e.props.getString(SegmentTemplate, "{{ .Text }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  e,
-		Env:      e.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+	return e.env.ErrorCode() != 0
 }
 
 func (e *exit) init(props Properties, env Environment) {

src/segment_exit_test.go

@@ -18,7 +18,7 @@ func TestExitWriterEnabled(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("lastErrorCode").Return(tc.ExitCode)
+		env.On("ErrorCode").Return(tc.ExitCode)
 		e := &exit{
 			env:   env,
 			props: properties{},
@@ -75,18 +75,14 @@ func TestExitWriterTemplateString(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("lastErrorCode").Return(tc.ExitCode)
-		env.On("templateCache").Return(&templateCache{
+		env.On("ErrorCode").Return(tc.ExitCode)
+		env.On("TemplateCache").Return(&TemplateCache{
 			Code: tc.ExitCode,
 		})
-		env.onTemplate()
-		props := properties{
-			SegmentTemplate: tc.Template,
-		}
 		e := &exit{
 			env:   env,
-			props: props,
+			props: properties{},
 		}
-		assert.Equal(t, tc.Expected, e.string(), tc.Case)
+		assert.Equal(t, tc.Expected, renderTemplate(env, tc.Template, e), tc.Case)
 	}
 }

src/segment_git.go

@@ -104,6 +104,10 @@ const (
 	BRANCHPREFIX = "ref: refs/heads/"
 )
 
+func (g *git) template() string {
+	return "{{ .HEAD }} {{ .BranchStatus }}{{ if .Working.Changed }} \uF044 {{ .Working.String }}{{ end }}{{ if .Staging.Changed }} \uF046 {{ .Staging.String }}{{ end }}" // nolint: lll
+}
+
 func (g *git) enabled() bool {
 	if !g.shouldDisplay() {
 		return false
@@ -134,28 +138,28 @@ func (g *git) shouldDisplay() bool {
 	// when in wsl/wsl2 and in a windows shared folder
 	// we must use git.exe and convert paths accordingly
 	// for worktrees, stashes, and path to work
-	g.IsWslSharedPath = g.env.inWSLSharedDrive()
-	if !g.env.hasCommand(g.getGitCommand()) {
+	g.IsWslSharedPath = g.env.InWSLSharedDrive()
+	if !g.env.HasCommand(g.getGitCommand()) {
 		return false
 	}
-	gitdir, err := g.env.hasParentFilePath(".git")
+	gitdir, err := g.env.HasParentFilePath(".git")
 	if err != nil {
 		return false
 	}
-	if g.shouldIgnoreRootRepository(gitdir.parentFolder) {
+	if g.shouldIgnoreRootRepository(gitdir.ParentFolder) {
 		return false
 	}
 
-	if gitdir.isDir {
-		g.gitWorkingFolder = gitdir.path
-		g.gitRootFolder = gitdir.path
+	if gitdir.IsDir {
+		g.gitWorkingFolder = gitdir.Path
+		g.gitRootFolder = gitdir.Path
 		// convert the worktree file path to a windows one when in wsl 2 shared folder
-		g.gitRealFolder = strings.TrimSuffix(g.convertToWindowsPath(gitdir.path), ".git")
+		g.gitRealFolder = strings.TrimSuffix(g.convertToWindowsPath(gitdir.Path), ".git")
 		return true
 	}
 	// handle worktree
-	g.gitRootFolder = gitdir.path
-	dirPointer := strings.Trim(g.env.getFileContent(gitdir.path), " \r\n")
+	g.gitRootFolder = gitdir.Path
+	dirPointer := strings.Trim(g.env.FileContent(gitdir.Path), " \r\n")
 	matches := findNamedRegexMatch(`^gitdir: (?P<dir>.*)$`, dirPointer)
 	if matches != nil && matches["dir"] != "" {
 		// if we open a worktree file in a shared wsl2 folder, we have to convert it back
@@ -168,7 +172,7 @@ func (g *git) shouldDisplay() bool {
 		ind := strings.LastIndex(g.gitWorkingFolder, "/.git/worktrees")
 		if ind > -1 {
 			g.gitRootFolder = g.gitWorkingFolder[:ind+5]
-			g.gitRealFolder = strings.TrimSuffix(g.env.getFileContent(g.gitWorkingFolder+"/gitdir"), ".git\n")
+			g.gitRealFolder = strings.TrimSuffix(g.env.FileContent(g.gitWorkingFolder+"/gitdir"), ".git\n")
 			g.IsWorkTree = true
 			return true
 		}
@@ -176,7 +180,7 @@ func (g *git) shouldDisplay() bool {
 		// we need the parent folder to detect where the real .git folder is
 		ind = strings.LastIndex(g.gitWorkingFolder, "/.git/modules")
 		if ind > -1 {
-			g.gitRootFolder = gitdir.parentFolder + "/" + g.gitWorkingFolder
+			g.gitRootFolder = gitdir.ParentFolder + "/" + g.gitWorkingFolder
 			g.gitRealFolder = g.gitRootFolder
 			g.gitWorkingFolder = g.gitRootFolder
 			return true
@@ -187,24 +191,6 @@ func (g *git) shouldDisplay() bool {
 	return false
 }
 
-func (g *git) string() string {
-	segmentTemplate := g.props.getString(SegmentTemplate, "{{ .HEAD }} {{ .BranchStatus }}{{ if .Working.Changed }} \uF044 {{ .Working.String }}{{ end }}{{ if .Staging.Changed }} \uF046 {{ .Staging.String }}{{ end }}") // nolint: lll
-	return g.templateString(segmentTemplate)
-}
-
-func (g *git) templateString(segmentTemplate string) string {
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  g,
-		Env:      g.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (g *git) setBranchStatus() {
 	getBranchStatus := func() string {
 		if g.Ahead > 0 && g.Behind > 0 {
@@ -301,7 +287,7 @@ func (g *git) getGitCommand() string {
 		return g.gitCommand
 	}
 	g.gitCommand = "git"
-	if g.env.getRuntimeGOOS() == windowsPlatform || g.IsWslSharedPath {
+	if g.env.GOOS() == windowsPlatform || g.IsWslSharedPath {
 		g.gitCommand = "git.exe"
 	}
 	return g.gitCommand
@@ -309,7 +295,7 @@ func (g *git) getGitCommand() string {
 
 func (g *git) getGitCommandOutput(args ...string) string {
 	args = append([]string{"-C", g.gitRealFolder, "--no-optional-locks", "-c", "core.quotepath=false", "-c", "color.status=false"}, args...)
-	val, err := g.env.runCommand(g.getGitCommand(), args...)
+	val, err := g.env.RunCommand(g.getGitCommand(), args...)
 	if err != nil {
 		return ""
 	}
@@ -334,7 +320,7 @@ func (g *git) setGitHEADContext() {
 
 	getPrettyNameOrigin := func(file string) string {
 		var origin string
-		head := g.getFileContents(g.gitWorkingFolder, file)
+		head := g.FileContents(g.gitWorkingFolder, file)
 		if head == "detached HEAD" {
 			origin = formatDetached()
 		} else {
@@ -344,20 +330,20 @@ func (g *git) setGitHEADContext() {
 		return origin
 	}
 
-	if g.env.hasFolder(g.gitWorkingFolder + "/rebase-merge") {
+	if g.env.HasFolder(g.gitWorkingFolder + "/rebase-merge") {
 		origin := getPrettyNameOrigin("rebase-merge/head-name")
 		onto := g.getGitRefFileSymbolicName("rebase-merge/onto")
 		onto = g.formatHEAD(onto)
-		step := g.getFileContents(g.gitWorkingFolder, "rebase-merge/msgnum")
-		total := g.getFileContents(g.gitWorkingFolder, "rebase-merge/end")
+		step := g.FileContents(g.gitWorkingFolder, "rebase-merge/msgnum")
+		total := g.FileContents(g.gitWorkingFolder, "rebase-merge/end")
 		icon := g.props.getString(RebaseIcon, "\uE728 ")
 		g.HEAD = fmt.Sprintf("%s%s onto %s%s (%s/%s) at %s", icon, origin, branchIcon, onto, step, total, g.HEAD)
 		return
 	}
-	if g.env.hasFolder(g.gitWorkingFolder + "/rebase-apply") {
+	if g.env.HasFolder(g.gitWorkingFolder + "/rebase-apply") {
 		origin := getPrettyNameOrigin("rebase-apply/head-name")
-		step := g.getFileContents(g.gitWorkingFolder, "rebase-apply/next")
-		total := g.getFileContents(g.gitWorkingFolder, "rebase-apply/last")
+		step := g.FileContents(g.gitWorkingFolder, "rebase-apply/next")
+		total := g.FileContents(g.gitWorkingFolder, "rebase-apply/last")
 		icon := g.props.getString(RebaseIcon, "\uE728 ")
 		g.HEAD = fmt.Sprintf("%s%s (%s/%s) at %s", icon, origin, step, total, g.HEAD)
 		return
@@ -366,7 +352,7 @@ func (g *git) setGitHEADContext() {
 	commitIcon := g.props.getString(CommitIcon, "\uF417")
 	if g.hasGitFile("MERGE_MSG") {
 		icon := g.props.getString(MergeIcon, "\uE727 ")
-		mergeContext := g.getFileContents(g.gitWorkingFolder, "MERGE_MSG")
+		mergeContext := g.FileContents(g.gitWorkingFolder, "MERGE_MSG")
 		matches := findNamedRegexMatch(`Merge (remote-tracking )?(?P<type>branch|commit|tag) '(?P<theirs>.*)'`, mergeContext)
 		// head := g.getGitRefFileSymbolicName("ORIG_HEAD")
 		if matches != nil && matches["theirs"] != "" {
@@ -392,19 +378,19 @@ func (g *git) setGitHEADContext() {
 	// reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read
 	// the todo file.
 	if g.hasGitFile("CHERRY_PICK_HEAD") {
-		sha := g.getFileContents(g.gitWorkingFolder, "CHERRY_PICK_HEAD")
+		sha := g.FileContents(g.gitWorkingFolder, "CHERRY_PICK_HEAD")
 		cherry := g.props.getString(CherryPickIcon, "\uE29B ")
 		g.HEAD = fmt.Sprintf("%s%s%s onto %s", cherry, commitIcon, g.formatSHA(sha), formatDetached())
 		return
 	}
 	if g.hasGitFile("REVERT_HEAD") {
-		sha := g.getFileContents(g.gitWorkingFolder, "REVERT_HEAD")
+		sha := g.FileContents(g.gitWorkingFolder, "REVERT_HEAD")
 		revert := g.props.getString(RevertIcon, "\uF0E2 ")
 		g.HEAD = fmt.Sprintf("%s%s%s onto %s", revert, commitIcon, g.formatSHA(sha), formatDetached())
 		return
 	}
 	if g.hasGitFile("sequencer/todo") {
-		todo := g.getFileContents(g.gitWorkingFolder, "sequencer/todo")
+		todo := g.FileContents(g.gitWorkingFolder, "sequencer/todo")
 		matches := findNamedRegexMatch(`^(?P<action>p|pick|revert)\s+(?P<sha>\S+)`, todo)
 		if matches != nil && matches["sha"] != "" {
 			action := matches["action"]
@@ -441,18 +427,18 @@ func (g *git) formatSHA(sha string) string {
 }
 
 func (g *git) hasGitFile(file string) bool {
-	return g.env.hasFilesInDir(g.gitWorkingFolder, file)
+	return g.env.HasFilesInDir(g.gitWorkingFolder, file)
 }
 
 func (g *git) getGitRefFileSymbolicName(refFile string) string {
-	ref := g.getFileContents(g.gitWorkingFolder, refFile)
+	ref := g.FileContents(g.gitWorkingFolder, refFile)
 	return g.getGitCommandOutput("name-rev", "--name-only", "--exclude=tags/*", ref)
 }
 
 func (g *git) setPrettyHEADName() {
 	// we didn't fetch status, fallback to parsing the HEAD file
 	if len(g.Hash) == 0 {
-		HEADRef := g.getFileContents(g.gitWorkingFolder, "HEAD")
+		HEADRef := g.FileContents(g.gitWorkingFolder, "HEAD")
 		if strings.HasPrefix(HEADRef, BRANCHPREFIX) {
 			branchName := strings.TrimPrefix(HEADRef, BRANCHPREFIX)
 			g.HEAD = fmt.Sprintf("%s%s", g.props.getString(BranchIcon, "\uE0A0"), g.formatHEAD(branchName))
@@ -478,7 +464,7 @@ func (g *git) setPrettyHEADName() {
 }
 
 func (g *git) getStashContext() int {
-	stashContent := g.getFileContents(g.gitRootFolder, "logs/refs/stash")
+	stashContent := g.FileContents(g.gitRootFolder, "logs/refs/stash")
 	if stashContent == "" {
 		return 0
 	}
@@ -487,10 +473,10 @@ func (g *git) getStashContext() int {
 }
 
 func (g *git) getWorktreeContext() int {
-	if !g.env.hasFolder(g.gitRootFolder + "/worktrees") {
+	if !g.env.HasFolder(g.gitRootFolder + "/worktrees") {
 		return 0
 	}
-	worktreeFolders := g.env.getFoldersList(g.gitRootFolder + "/worktrees")
+	worktreeFolders := g.env.FolderList(g.gitRootFolder + "/worktrees")
 	return len(worktreeFolders)
 }
 
@@ -522,12 +508,12 @@ func (g *git) convertToWindowsPath(path string) string {
 	if !g.IsWslSharedPath {
 		return path
 	}
-	return g.env.convertToWindowsPath(path)
+	return g.env.ConvertToWindowsPath(path)
 }
 
 func (g *git) convertToLinuxPath(path string) string {
 	if !g.IsWslSharedPath {
 		return path
 	}
-	return g.env.convertToLinuxPath(path)
+	return g.env.ConvertToLinuxPath(path)
 }

src/segment_git_test.go

@@ -14,10 +14,10 @@ const (
 
 func TestEnabledGitNotFound(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("inWSLSharedDrive").Return(false)
-	env.On("hasCommand", "git").Return(false)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("isWsl").Return(false)
+	env.On("InWSLSharedDrive").Return(false)
+	env.On("HasCommand", "git").Return(false)
+	env.On("GOOS").Return("")
+	env.On("IsWsl").Return(false)
 	g := &git{
 		scm: scm{
 			env:   env,
@@ -28,19 +28,19 @@ func TestEnabledGitNotFound(t *testing.T) {
 }
 
 func TestEnabledInWorkingDirectory(t *testing.T) {
-	fileInfo := &fileInfo{
-		path:         "/dir/hello",
-		parentFolder: "/dir",
-		isDir:        true,
+	fileInfo := &FileInfo{
+		Path:         "/dir/hello",
+		ParentFolder: "/dir",
+		IsDir:        true,
 	}
 	env := new(MockedEnvironment)
-	env.On("inWSLSharedDrive").Return(false)
-	env.On("hasCommand", "git").Return(true)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("getFileContent", "/dir/hello/HEAD").Return("")
-	env.mockGitCommand(fileInfo.path, "", "describe", "--tags", "--exact-match")
-	env.On("isWsl").Return(false)
-	env.On("hasParentFilePath", ".git").Return(fileInfo, nil)
+	env.On("InWSLSharedDrive").Return(false)
+	env.On("HasCommand", "git").Return(true)
+	env.On("GOOS").Return("")
+	env.On("FileContent", "/dir/hello/HEAD").Return("")
+	env.mockGitCommand(fileInfo.Path, "", "describe", "--tags", "--exact-match")
+	env.On("IsWsl").Return(false)
+	env.On("HasParentFilePath", ".git").Return(fileInfo, nil)
 	g := &git{
 		scm: scm{
 			env:   env,
@@ -48,25 +48,25 @@ func TestEnabledInWorkingDirectory(t *testing.T) {
 		},
 	}
 	assert.True(t, g.enabled())
-	assert.Equal(t, fileInfo.path, g.gitWorkingFolder)
+	assert.Equal(t, fileInfo.Path, g.gitWorkingFolder)
 }
 
 func TestEnabledInWorkingTree(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("inWSLSharedDrive").Return(false)
-	env.On("hasCommand", "git").Return(true)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("isWsl").Return(false)
-	fileInfo := &fileInfo{
-		path:         "/dev/folder_worktree/.git",
-		parentFolder: "/dev/folder_worktree",
-		isDir:        false,
+	env.On("InWSLSharedDrive").Return(false)
+	env.On("HasCommand", "git").Return(true)
+	env.On("GOOS").Return("")
+	env.On("IsWsl").Return(false)
+	fileInfo := &FileInfo{
+		Path:         "/dev/folder_worktree/.git",
+		ParentFolder: "/dev/folder_worktree",
+		IsDir:        false,
 	}
-	env.On("getFileContent", "/dev/real_folder/.git/worktrees/folder_worktree/HEAD").Return("")
-	env.mockGitCommand(fileInfo.parentFolder, "", "describe", "--tags", "--exact-match")
-	env.On("hasParentFilePath", ".git").Return(fileInfo, nil)
-	env.On("getFileContent", "/dev/folder_worktree/.git").Return("gitdir: /dev/real_folder/.git/worktrees/folder_worktree")
-	env.On("getFileContent", "/dev/real_folder/.git/worktrees/folder_worktree/gitdir").Return("/dev/folder_worktree.git\n")
+	env.On("FileContent", "/dev/real_folder/.git/worktrees/folder_worktree/HEAD").Return("")
+	env.mockGitCommand(fileInfo.ParentFolder, "", "describe", "--tags", "--exact-match")
+	env.On("HasParentFilePath", ".git").Return(fileInfo, nil)
+	env.On("FileContent", "/dev/folder_worktree/.git").Return("gitdir: /dev/real_folder/.git/worktrees/folder_worktree")
+	env.On("FileContent", "/dev/real_folder/.git/worktrees/folder_worktree/gitdir").Return("/dev/folder_worktree.git\n")
 	g := &git{
 		scm: scm{
 			env:   env,
@@ -80,20 +80,20 @@ func TestEnabledInWorkingTree(t *testing.T) {
 
 func TestEnabledInSubmodule(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("inWSLSharedDrive").Return(false)
-	env.On("hasCommand", "git").Return(true)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("isWsl").Return(false)
-	fileInfo := &fileInfo{
-		path:         "/dev/parent/test-submodule/.git",
-		parentFolder: "/dev/parent/test-submodule",
-		isDir:        false,
+	env.On("InWSLSharedDrive").Return(false)
+	env.On("HasCommand", "git").Return(true)
+	env.On("GOOS").Return("")
+	env.On("IsWsl").Return(false)
+	fileInfo := &FileInfo{
+		Path:         "/dev/parent/test-submodule/.git",
+		ParentFolder: "/dev/parent/test-submodule",
+		IsDir:        false,
 	}
-	env.On("getFileContent", "/dev/parent/test-submodule/../.git/modules/test-submodule/HEAD").Return("")
+	env.On("FileContent", "/dev/parent/test-submodule/../.git/modules/test-submodule/HEAD").Return("")
 	env.mockGitCommand("/dev/parent/test-submodule/../.git/modules/test-submodule", "", "describe", "--tags", "--exact-match")
-	env.On("hasParentFilePath", ".git").Return(fileInfo, nil)
-	env.On("getFileContent", "/dev/parent/test-submodule/.git").Return("gitdir: ../.git/modules/test-submodule")
-	env.On("getFileContent", "/dev/parent/.git/modules/test-submodule").Return("/dev/folder_worktree.git\n")
+	env.On("HasParentFilePath", ".git").Return(fileInfo, nil)
+	env.On("FileContent", "/dev/parent/test-submodule/.git").Return("gitdir: ../.git/modules/test-submodule")
+	env.On("FileContent", "/dev/parent/.git/modules/test-submodule").Return("/dev/folder_worktree.git\n")
 	g := &git{
 		scm: scm{
 			env:   env,
@@ -111,9 +111,9 @@ func TestGetGitOutputForCommand(t *testing.T) {
 	commandArgs := []string{"symbolic-ref", "--short", "HEAD"}
 	want := "je suis le output"
 	env := new(MockedEnvironment)
-	env.On("isWsl").Return(false)
-	env.On("runCommand", "git", append(args, commandArgs...)).Return(want, nil)
-	env.On("getRuntimeGOOS").Return("unix")
+	env.On("IsWsl").Return(false)
+	env.On("RunCommand", "git", append(args, commandArgs...)).Return(want, nil)
+	env.On("GOOS").Return("unix")
 	g := &git{
 		scm: scm{
 			env:   env,
@@ -126,7 +126,7 @@ func TestGetGitOutputForCommand(t *testing.T) {
 
 func (m *MockedEnvironment) mockGitCommand(dir, returnValue string, args ...string) {
 	args = append([]string{"-C", dir, "--no-optional-locks", "-c", "core.quotepath=false", "-c", "color.status=false"}, args...)
-	m.On("runCommand", "git", args).Return(returnValue, nil)
+	m.On("RunCommand", "git", args).Return(returnValue, nil)
 }
 
 func TestSetGitHEADContextClean(t *testing.T) {
@@ -233,35 +233,35 @@ func TestSetGitHEADContextClean(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("inWSLSharedDrive").Return(false)
-		env.On("getRuntimeGOOS").Return("unix")
-		env.On("isWsl").Return(false)
+		env.On("InWSLSharedDrive").Return(false)
+		env.On("GOOS").Return("unix")
+		env.On("IsWsl").Return(false)
 		env.mockGitCommand("", "", "describe", "--tags", "--exact-match")
 		env.mockGitCommand("", tc.Theirs, "name-rev", "--name-only", "--exclude=tags/*", tc.Theirs)
 		env.mockGitCommand("", tc.Ours, "name-rev", "--name-only", "--exclude=tags/*", tc.Ours)
 		// rebase merge
-		env.On("hasFolder", "/rebase-merge").Return(tc.RebaseMerge)
-		env.On("getFileContent", "/rebase-merge/head-name").Return(tc.Ours)
-		env.On("getFileContent", "/rebase-merge/onto").Return(tc.Theirs)
-		env.On("getFileContent", "/rebase-merge/msgnum").Return(tc.Step)
-		env.On("getFileContent", "/rebase-merge/end").Return(tc.Total)
+		env.On("HasFolder", "/rebase-merge").Return(tc.RebaseMerge)
+		env.On("FileContent", "/rebase-merge/head-name").Return(tc.Ours)
+		env.On("FileContent", "/rebase-merge/onto").Return(tc.Theirs)
+		env.On("FileContent", "/rebase-merge/msgnum").Return(tc.Step)
+		env.On("FileContent", "/rebase-merge/end").Return(tc.Total)
 		// rebase apply
-		env.On("hasFolder", "/rebase-apply").Return(tc.RebaseApply)
-		env.On("getFileContent", "/rebase-apply/head-name").Return(tc.Ours)
-		env.On("getFileContent", "/rebase-apply/next").Return(tc.Step)
-		env.On("getFileContent", "/rebase-apply/last").Return(tc.Total)
+		env.On("HasFolder", "/rebase-apply").Return(tc.RebaseApply)
+		env.On("FileContent", "/rebase-apply/head-name").Return(tc.Ours)
+		env.On("FileContent", "/rebase-apply/next").Return(tc.Step)
+		env.On("FileContent", "/rebase-apply/last").Return(tc.Total)
 		// merge
-		env.On("hasFilesInDir", "", "MERGE_MSG").Return(tc.Merge)
-		env.On("getFileContent", "/MERGE_MSG").Return(fmt.Sprintf("Merge %s into %s", tc.Theirs, tc.Ours))
+		env.On("HasFilesInDir", "", "MERGE_MSG").Return(tc.Merge)
+		env.On("FileContent", "/MERGE_MSG").Return(fmt.Sprintf("Merge %s into %s", tc.Theirs, tc.Ours))
 		// cherry pick
-		env.On("hasFilesInDir", "", "CHERRY_PICK_HEAD").Return(tc.CherryPick)
-		env.On("getFileContent", "/CHERRY_PICK_HEAD").Return(tc.Theirs)
+		env.On("HasFilesInDir", "", "CHERRY_PICK_HEAD").Return(tc.CherryPick)
+		env.On("FileContent", "/CHERRY_PICK_HEAD").Return(tc.Theirs)
 		// revert
-		env.On("hasFilesInDir", "", "REVERT_HEAD").Return(tc.Revert)
-		env.On("getFileContent", "/REVERT_HEAD").Return(tc.Theirs)
+		env.On("HasFilesInDir", "", "REVERT_HEAD").Return(tc.Revert)
+		env.On("FileContent", "/REVERT_HEAD").Return(tc.Theirs)
 		// sequencer
-		env.On("hasFilesInDir", "", "sequencer/todo").Return(tc.Sequencer)
-		env.On("getFileContent", "/sequencer/todo").Return(tc.Theirs)
+		env.On("HasFilesInDir", "", "sequencer/todo").Return(tc.Sequencer)
+		env.On("FileContent", "/sequencer/todo").Return(tc.Theirs)
 
 		g := &git{
 			scm: scm{
@@ -301,9 +301,9 @@ func TestSetPrettyHEADName(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getFileContent", "/HEAD").Return(tc.HEAD)
-		env.On("getRuntimeGOOS").Return("unix")
-		env.On("isWsl").Return(false)
+		env.On("FileContent", "/HEAD").Return(tc.HEAD)
+		env.On("GOOS").Return("unix")
+		env.On("IsWsl").Return(false)
 		env.mockGitCommand("", tc.Tag, "describe", "--tags", "--exact-match")
 		g := &git{
 			scm: scm{
@@ -419,8 +419,8 @@ func TestSetGitStatus(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getRuntimeGOOS").Return("unix")
-		env.On("isWsl").Return(false)
+		env.On("GOOS").Return("unix")
+		env.On("IsWsl").Return(false)
 		env.mockGitCommand("", strings.ReplaceAll(tc.Output, "\t", ""), "status", "-unormal", "--branch", "--porcelain=2")
 		g := &git{
 			scm: scm{
@@ -455,7 +455,7 @@ func TestGetStashContextZeroEntries(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getFileContent", "/logs/refs/stash").Return(tc.StashContent)
+		env.On("FileContent", "/logs/refs/stash").Return(tc.StashContent)
 		g := &git{
 			scm: scm{
 				env: env,
@@ -482,10 +482,10 @@ func TestGitUpstream(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := &MockedEnvironment{}
-		env.On("isWsl").Return(false)
-		env.On("runCommand", "git", []string{"-C", "", "--no-optional-locks", "-c", "core.quotepath=false",
+		env.On("IsWsl").Return(false)
+		env.On("RunCommand", "git", []string{"-C", "", "--no-optional-locks", "-c", "core.quotepath=false",
 			"-c", "color.status=false", "remote", "get-url", "origin"}).Return(tc.Upstream, nil)
-		env.On("getRuntimeGOOS").Return("unix")
+		env.On("GOOS").Return("unix")
 		props := properties{
 			GithubIcon:      "GH",
 			GitlabIcon:      "GL",
@@ -561,8 +561,8 @@ func TestShouldIgnoreRootRepository(t *testing.T) {
 			},
 		}
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return("/home/bill")
-		env.On("getRuntimeGOOS").Return(windowsPlatform)
+		env.On("Home").Return("/home/bill")
+		env.On("GOOS").Return(windowsPlatform)
 		git := &git{
 			scm: scm{
 				props: props,
@@ -593,24 +593,24 @@ func TestGetGitCommand(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("isWsl").Return(tc.IsWSL)
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
-		env.On("pwd").Return(tc.CWD)
+		env.On("IsWsl").Return(tc.IsWSL)
+		env.On("GOOS").Return(tc.GOOS)
+		env.On("Pwd").Return(tc.CWD)
 		wslUname := "5.10.60.1-microsoft-standard-WSL2"
 		if tc.IsWSL1 {
 			wslUname = "4.4.0-19041-Microsoft"
 		}
-		env.On("runCommand", "uname", []string{"-r"}).Return(wslUname, nil)
+		env.On("RunCommand", "uname", []string{"-r"}).Return(wslUname, nil)
 		g := &git{
 			scm: scm{
 				env: env,
 			},
 		}
 		if tc.IsWslSharedPath {
-			env.On("inWSLSharedDrive").Return(true)
+			env.On("InWSLSharedDrive").Return(true)
 			g.IsWslSharedPath = tc.IsWslSharedPath
 		} else {
-			env.On("inWSLSharedDrive").Return(false)
+			env.On("InWSLSharedDrive").Return(false)
 		}
 		assert.Equal(t, tc.Expected, g.getGitCommand(), tc.Case)
 	}
@@ -744,9 +744,8 @@ func TestGitTemplateString(t *testing.T) {
 			FetchStatus: true,
 		}
 		env := new(MockedEnvironment)
-		env.onTemplate()
 		tc.Git.env = env
 		tc.Git.props = props
-		assert.Equal(t, tc.Expected, tc.Git.templateString(tc.Template), tc.Case)
+		assert.Equal(t, tc.Expected, renderTemplate(env, tc.Template, tc.Git), tc.Case)
 	}
 }

src/segment_golang.go

@@ -12,9 +12,8 @@ const (
 	ParseModFile Property = "parse_mod_file"
 )
 
-func (g *golang) string() string {
-	segmentTemplate := g.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return g.language.string(segmentTemplate, g)
+func (g *golang) template() string {
+	return languageTemplate
 }
 
 func (g *golang) init(props Properties, env Environment) {
@@ -41,12 +40,12 @@ func (g *golang) getVersion() (string, error) {
 	if !g.props.getBool(ParseModFile, false) {
 		return "", nil
 	}
-	gomod, err := g.language.env.hasParentFilePath("go.mod")
+	gomod, err := g.language.env.HasParentFilePath("go.mod")
 	if err != nil {
 		return "", nil
 	}
-	contents := g.language.env.getFileContent(gomod.path)
-	file, err := modfile.Parse(gomod.path, []byte(contents), nil)
+	contents := g.language.env.FileContent(gomod.Path)
+	file, err := modfile.Parse(gomod.Path, []byte(contents), nil)
 	if err != nil {
 		return "", err
 	}

src/segment_golang_test.go

@@ -18,12 +18,14 @@ type mockedLanguageParams struct {
 
 func getMockedLanguageEnv(params *mockedLanguageParams) (*MockedEnvironment, properties) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", params.cmd).Return(true)
-	env.On("runCommand", params.cmd, []string{params.versionParam}).Return(params.versionOutput, nil)
-	env.On("hasFiles", params.extension).Return(true)
-	env.On("pwd").Return("/usr/home/project")
-	env.On("homeDir").Return("/usr/home")
-	env.onTemplate()
+	env.On("HasCommand", params.cmd).Return(true)
+	env.On("RunCommand", params.cmd, []string{params.versionParam}).Return(params.versionOutput, nil)
+	env.On("HasFiles", params.extension).Return(true)
+	env.On("Pwd").Return("/usr/home/project")
+	env.On("Home").Return("/usr/home")
+	env.On("TemplateCache").Return(&TemplateCache{
+		Env: make(map[string]string),
+	})
 	props := properties{
 		FetchVersion: true,
 	}
@@ -62,28 +64,28 @@ func TestGolang(t *testing.T) {
 		env, props := getMockedLanguageEnv(params)
 		if tc.ParseModFile {
 			props[ParseModFile] = tc.ParseModFile
-			fileInfo := &fileInfo{
-				path:         "./go.mod",
-				parentFolder: "./",
-				isDir:        false,
+			fileInfo := &FileInfo{
+				Path:         "./go.mod",
+				ParentFolder: "./",
+				IsDir:        false,
 			}
 			var err error
 			if !tc.HasModFileInParentDir {
 				err = errors.New("no match")
 			}
-			env.On("hasParentFilePath", "go.mod").Return(fileInfo, err)
+			env.On("HasParentFilePath", "go.mod").Return(fileInfo, err)
 			var content string
 			if tc.InvalidModfile {
 				content = "invalid go.mod file"
 			} else {
-				tmp, _ := ioutil.ReadFile(fileInfo.path)
+				tmp, _ := ioutil.ReadFile(fileInfo.Path)
 				content = string(tmp)
 			}
-			env.On("getFileContent", fileInfo.path).Return(content)
+			env.On("FileContent", fileInfo.Path).Return(content)
 		}
 		g := &golang{}
 		g.init(props, env)
 		assert.True(t, g.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, g.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, g.template(), g), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_ipify.go

@@ -10,6 +10,10 @@ const (
 	IpifyURL Property = "url"
 )
 
+func (i *ipify) template() string {
+	return "{{ .IP }}"
+}
+
 func (i *ipify) enabled() bool {
 	ip, err := i.getResult()
 	if err != nil {
@@ -20,21 +24,6 @@ func (i *ipify) enabled() bool {
 	return true
 }
 
-func (i *ipify) string() string {
-	segmentTemplate := i.props.getString(SegmentTemplate, "{{.IP}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  i,
-		Env:      i.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-
-	return text
-}
-
 func (i *ipify) getResult() (string, error) {
 	cacheTimeout := i.props.getInt(CacheTimeout, DefaultCacheTimeout)
 
@@ -42,7 +31,7 @@ func (i *ipify) getResult() (string, error) {
 
 	if cacheTimeout > 0 {
 		// check if data stored in cache
-		val, found := i.env.cache().get(url)
+		val, found := i.env.Cache().Get(url)
 		// we got something from te cache
 		if found {
 			return val, nil
@@ -61,7 +50,7 @@ func (i *ipify) getResult() (string, error) {
 
 	if cacheTimeout > 0 {
 		// persist public ip in cache
-		i.env.cache().set(url, response, cacheTimeout)
+		i.env.Cache().Set(url, response, cacheTimeout)
 	}
 	return response, nil
 }

src/segment_ipify_test.go

@@ -46,25 +46,22 @@ func TestIpifySegment(t *testing.T) {
 		props := properties{
 			CacheTimeout: 0,
 		}
-
 		env.On("HTTPRequest", IPIFYAPIURL).Return([]byte(tc.Response), tc.Error)
-		env.onTemplate()
 
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
-
-		o := &ipify{
+		ipify := &ipify{
 			props: props,
 			env:   env,
 		}
 
-		enabled := o.enabled()
+		enabled := ipify.enabled()
 		assert.Equal(t, tc.ExpectedEnabled, enabled, tc.Case)
 		if !enabled {
 			continue
 		}
 
-		assert.Equal(t, tc.ExpectedString, o.string(), tc.Case)
+		if tc.Template == "" {
+			tc.Template = ipify.template()
+		}
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, ipify), tc.Case)
 	}
 }

src/segment_java.go

@@ -6,9 +6,8 @@ type java struct {
 	language
 }
 
-func (j *java) string() string {
-	segmentTemplate := j.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return j.language.string(segmentTemplate, j)
+func (j *java) template() string {
+	return languageTemplate
 }
 
 func (j *java) init(props Properties, env Environment) {
@@ -37,7 +36,7 @@ func (j *java) init(props Properties, env Environment) {
 			"*.cljc",
 		},
 	}
-	javaHome := j.language.env.getenv("JAVA_HOME")
+	javaHome := j.language.env.Getenv("JAVA_HOME")
 	if len(javaHome) > 0 {
 		java := fmt.Sprintf("%s/bin/java", javaHome)
 		j.language.commands = []*cmd{

src/segment_java_test.go

@@ -54,25 +54,24 @@ func TestJava(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasCommand", "java").Return(true)
-		env.On("runCommand", "java", []string{"-Xinternalversion"}).Return(tc.Version, nil)
-		env.On("hasFiles", "pom.xml").Return(true)
-		env.On("pwd").Return("/usr/home/project")
-		env.On("homeDir").Return("/usr/home")
+		env.On("HasCommand", "java").Return(true)
+		env.On("RunCommand", "java", []string{"-Xinternalversion"}).Return(tc.Version, nil)
+		env.On("HasFiles", "pom.xml").Return(true)
+		env.On("Pwd").Return("/usr/home/project")
+		env.On("Home").Return("/usr/home")
 		if tc.JavaHomeEnabled {
-			env.On("getenv", "JAVA_HOME").Return("/usr/java")
-			env.On("hasCommand", "/usr/java/bin/java").Return(true)
-			env.On("runCommand", "/usr/java/bin/java", []string{"-Xinternalversion"}).Return(tc.JavaHomeVersion, nil)
+			env.On("Getenv", "JAVA_HOME").Return("/usr/java")
+			env.On("HasCommand", "/usr/java/bin/java").Return(true)
+			env.On("RunCommand", "/usr/java/bin/java", []string{"-Xinternalversion"}).Return(tc.JavaHomeVersion, nil)
 		} else {
-			env.On("getenv", "JAVA_HOME").Return("")
+			env.On("Getenv", "JAVA_HOME").Return("")
 		}
-		env.onTemplate()
 		props := properties{
 			FetchVersion: true,
 		}
 		j := &java{}
 		j.init(props, env)
 		assert.True(t, j.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, j.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, j.template(), j), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_julia.go

@@ -4,9 +4,8 @@ type julia struct {
 	language
 }
 
-func (j *julia) string() string {
-	segmentTemplate := j.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return j.language.string(segmentTemplate, j)
+func (j *julia) template() string {
+	return languageTemplate
 }
 
 func (j *julia) init(props Properties, env Environment) {

src/segment_julia_test.go

@@ -27,6 +27,6 @@ func TestJulia(t *testing.T) {
 		j := &julia{}
 		j.init(props, env)
 		assert.True(t, j.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, j.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, j.template(), j), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_kubectl.go

@@ -30,18 +30,8 @@ type KubeContext struct {
 	Namespace string `yaml:"namespace"`
 }
 
-func (k *kubectl) string() string {
-	segmentTemplate := k.props.getString(SegmentTemplate, "{{.Context}}{{if .Namespace}} :: {{.Namespace}}{{end}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  k,
-		Env:      k.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (k *kubectl) template() string {
+	return "{{ .Context }}{{ if .Namespace }} :: {{ .Namespace }}{{ end }}"
 }
 
 func (k *kubectl) init(props Properties, env Environment) {
@@ -60,9 +50,9 @@ func (k *kubectl) enabled() bool {
 func (k *kubectl) doParseKubeConfig() bool {
 	// Follow kubectl search rules (see https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/#the-kubeconfig-environment-variable)
 	// TL;DR: KUBECONFIG can contain a list of files. If it's empty ~/.kube/config is used. First file in list wins when merging keys.
-	kubeconfigs := filepath.SplitList(k.env.getenv("KUBECONFIG"))
+	kubeconfigs := filepath.SplitList(k.env.Getenv("KUBECONFIG"))
 	if len(kubeconfigs) == 0 {
-		kubeconfigs = []string{filepath.Join(k.env.homeDir(), ".kube/config")}
+		kubeconfigs = []string{filepath.Join(k.env.Home(), ".kube/config")}
 	}
 	contexts := make(map[string]*KubeContext)
 	k.Context = ""
@@ -71,7 +61,7 @@ func (k *kubectl) doParseKubeConfig() bool {
 			continue
 		}
 
-		content := k.env.getFileContent(kubeconfig)
+		content := k.env.FileContent(kubeconfig)
 
 		var config KubeConfig
 		err := yaml.Unmarshal([]byte(content), &config)
@@ -109,10 +99,10 @@ func (k *kubectl) doParseKubeConfig() bool {
 
 func (k *kubectl) doCallKubectl() bool {
 	cmd := "kubectl"
-	if !k.env.hasCommand(cmd) {
+	if !k.env.HasCommand(cmd) {
 		return false
 	}
-	result, err := k.env.runCommand(cmd, "config", "view", "--output", "yaml", "--minify")
+	result, err := k.env.RunCommand(cmd, "config", "view", "--output", "yaml", "--minify")
 	displayError := k.props.getBool(DisplayError, false)
 	if err != nil && displayError {
 		k.setError("KUBECTL ERR")

src/segment_kubectl_test.go

@@ -106,7 +106,7 @@ func TestKubectlSegment(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasCommand", "kubectl").Return(tc.KubectlExists)
+		env.On("HasCommand", "kubectl").Return(tc.KubectlExists)
 		var kubeconfig string
 		content, err := ioutil.ReadFile("./test/kubectl.yml")
 		if err == nil {
@@ -119,25 +119,23 @@ func TestKubectlSegment(t *testing.T) {
 				exitCode: 1,
 			}
 		}
-		env.On("runCommand", "kubectl", []string{"config", "view", "--output", "yaml", "--minify"}).Return(kubeconfig, kubectlErr)
-		env.On("getenv", "KUBECONFIG").Return(tc.Kubeconfig)
+		env.On("RunCommand", "kubectl", []string{"config", "view", "--output", "yaml", "--minify"}).Return(kubeconfig, kubectlErr)
+		env.On("Getenv", "KUBECONFIG").Return(tc.Kubeconfig)
 		for path, content := range tc.Files {
-			env.On("getFileContent", path).Return(content)
+			env.On("FileContent", path).Return(content)
 		}
-		env.On("homeDir").Return("testhome")
-		env.onTemplate()
+		env.On("Home").Return("testhome")
 
 		k := &kubectl{
 			env: env,
 			props: properties{
-				SegmentTemplate: tc.Template,
 				DisplayError:    tc.DisplayError,
 				ParseKubeConfig: tc.ParseKubeConfig,
 			},
 		}
 		assert.Equal(t, tc.ExpectedEnabled, k.enabled(), tc.Case)
 		if tc.ExpectedEnabled {
-			assert.Equal(t, tc.ExpectedString, k.string(), tc.Case)
+			assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, k), tc.Case)
 		}
 	}
 }

src/segment_language.go

@@ -5,6 +5,10 @@ import (
 	"fmt"
 )
 
+const (
+	languageTemplate = "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}"
+)
+
 type loadContext func()
 
 type inContext func() bool
@@ -83,24 +87,11 @@ const (
 	LanguageExtensions Property = "extensions"
 )
 
-func (l *language) string(segmentTemplate string, context SegmentWriter) string {
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  context,
-		Env:      l.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (l *language) enabled() bool {
 	// override default extensions if needed
 	l.extensions = l.props.getStringArray(LanguageExtensions, l.extensions)
 	inHomeDir := func() bool {
-		return l.env.pwd() == l.env.homeDir()
+		return l.env.Pwd() == l.env.Home()
 	}
 	var enabled bool
 	homeEnabled := l.props.getBool(HomeEnabled, l.homeEnabled)
@@ -138,7 +129,7 @@ func (l *language) enabled() bool {
 // hasLanguageFiles will return true at least one file matching the extensions is found
 func (l *language) hasLanguageFiles() bool {
 	for i, extension := range l.extensions {
-		if l.env.hasFiles(extension) {
+		if l.env.HasFiles(extension) {
 			break
 		}
 		if i == len(l.extensions)-1 {
@@ -155,10 +146,10 @@ func (l *language) setVersion() error {
 		var versionStr string
 		var err error
 		if command.getVersion == nil {
-			if !l.env.hasCommand(command.executable) {
+			if !l.env.HasCommand(command.executable) {
 				continue
 			}
-			versionStr, err = l.env.runCommand(command.executable, command.args...)
+			versionStr, err = l.env.RunCommand(command.executable, command.args...)
 			if exitErr, ok := err.(*commandError); ok {
 				l.exitCode = exitErr.exitCode
 				return fmt.Errorf("err executing %s with %s", command.executable, command.args)

src/segment_language_test.go

@@ -37,20 +37,22 @@ func (l *languageArgs) hasvalue(value string, list []string) bool {
 func bootStrapLanguageTest(args *languageArgs) *language {
 	env := new(MockedEnvironment)
 	for _, command := range args.commands {
-		env.On("hasCommand", command.executable).Return(args.hasvalue(command.executable, args.enabledCommands))
-		env.On("runCommand", command.executable, command.args).Return(args.version, args.expectedError)
+		env.On("HasCommand", command.executable).Return(args.hasvalue(command.executable, args.enabledCommands))
+		env.On("RunCommand", command.executable, command.args).Return(args.version, args.expectedError)
 	}
 	for _, extension := range args.extensions {
-		env.On("hasFiles", extension).Return(args.hasvalue(extension, args.enabledExtensions))
+		env.On("HasFiles", extension).Return(args.hasvalue(extension, args.enabledExtensions))
 	}
 	home := "/usr/home"
 	cwd := "/usr/home/project"
 	if args.inHome {
 		cwd = home
 	}
-	env.On("pwd").Return(cwd)
-	env.On("homeDir").Return(home)
-	env.onTemplate()
+	env.On("Pwd").Return(cwd)
+	env.On("Home").Return(home)
+	env.On("TemplateCache").Return(&TemplateCache{
+		Env: make(map[string]string),
+	})
 	if args.properties == nil {
 		args.properties = properties{}
 	}

src/segment_nbgv.go

@@ -7,10 +7,11 @@ import (
 type nbgv struct {
 	props Properties
 	env   Environment
-	nbgv  *versionInfo
+
+	VersionInfo
 }
 
-type versionInfo struct {
+type VersionInfo struct {
 	VersionFileFound             bool   `json:"VersionFileFound"`
 	Version                      string `json:"Version"`
 	AssemblyVersion              string `json:"AssemblyVersion"`
@@ -21,35 +22,25 @@ type versionInfo struct {
 	SimpleVersion                string `json:"SimpleVersion"`
 }
 
-func (n *nbgv) enabled() bool {
-	nbgv := "nbgv"
-	if !n.env.hasCommand(nbgv) {
-		return false
-	}
-	response, err := n.env.runCommand(nbgv, "get-version", "--format=json")
-	if err != nil {
-		return false
-	}
-	n.nbgv = new(versionInfo)
-	err = json.Unmarshal([]byte(response), n.nbgv)
-	if err != nil {
-		return false
-	}
-	return n.nbgv.VersionFileFound
+func (n *nbgv) template() string {
+	return "{{ .Version }}"
 }
 
-func (n *nbgv) string() string {
-	segmentTemplate := n.props.getString(SegmentTemplate, "{{ .Version }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  n.nbgv,
-		Env:      n.env,
+func (n *nbgv) enabled() bool {
+	nbgv := "nbgv"
+	if !n.env.HasCommand(nbgv) {
+		return false
 	}
-	text, err := template.render()
+	response, err := n.env.RunCommand(nbgv, "get-version", "--format=json")
 	if err != nil {
-		return err.Error()
+		return false
 	}
-	return text
+	n.VersionInfo = VersionInfo{}
+	err = json.Unmarshal([]byte(response), &n.VersionInfo)
+	if err != nil {
+		return false
+	}
+	return n.VersionInfo.VersionFileFound
 }
 
 func (n *nbgv) init(props Properties, env Environment) {

src/segment_nbgv_test.go

@@ -14,7 +14,7 @@ func TestNbgv(t *testing.T) {
 		ExpectedString  string
 		Response        string
 		HasNbgv         bool
-		SegmentTemplate string
+		Template        string
 		Error           error
 	}{
 		{Case: "nbgv not installed"},
@@ -26,7 +26,7 @@ func TestNbgv(t *testing.T) {
 			ExpectedString:  "invalid template text",
 			HasNbgv:         true,
 			Response:        "{ \"VersionFileFound\": true }",
-			SegmentTemplate: "{{ err }}",
+			Template:        "{{ err }}",
 		},
 		{
 			Case:    "command error",
@@ -44,7 +44,7 @@ func TestNbgv(t *testing.T) {
 			ExpectedString:  "bump",
 			HasNbgv:         true,
 			Response:        "{ \"VersionFileFound\": true, \"Version\": \"bump\" }",
-			SegmentTemplate: "{{ .Version }}",
+			Template:        "{{ .Version }}",
 		},
 		{
 			Case:            "AssemblyVersion",
@@ -52,25 +52,25 @@ func TestNbgv(t *testing.T) {
 			ExpectedString:  "bump",
 			HasNbgv:         true,
 			Response:        "{ \"VersionFileFound\": true, \"AssemblyVersion\": \"bump\" }",
-			SegmentTemplate: "{{ .AssemblyVersion }}",
+			Template:        "{{ .AssemblyVersion }}",
 		},
 	}
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasCommand", "nbgv").Return(tc.HasNbgv)
-		env.On("runCommand", "nbgv", []string{"get-version", "--format=json"}).Return(tc.Response, tc.Error)
-		env.onTemplate()
+		env.On("HasCommand", "nbgv").Return(tc.HasNbgv)
+		env.On("RunCommand", "nbgv", []string{"get-version", "--format=json"}).Return(tc.Response, tc.Error)
 		nbgv := &nbgv{
 			env:   env,
-			props: properties{
-				SegmentTemplate: tc.SegmentTemplate,
-			},
+			props: properties{},
 		}
 		enabled := nbgv.enabled()
 		assert.Equal(t, tc.ExpectedEnabled, enabled, tc.Case)
+		if tc.Template == "" {
+			tc.Template = nbgv.template()
+		}
 		if enabled {
-			assert.Equal(t, tc.ExpectedString, nbgv.string(), tc.Case)
+			assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, nbgv), tc.Case)
 		}
 	}
 }

src/segment_nightscout.go

@@ -45,6 +45,10 @@ type NightscoutData struct {
 	Mills      int64     `json:"mills"`
 }
 
+func (ns *nightscout) template() string {
+	return "{{ .Sgv }}"
+}
+
 func (ns *nightscout) enabled() bool {
 	data, err := ns.getResult()
 	if err != nil {
@@ -77,21 +81,6 @@ func (ns *nightscout) getTrendIcon() string {
 	}
 }
 
-func (ns *nightscout) string() string {
-	segmentTemplate := ns.props.getString(SegmentTemplate, "{{.Sgv}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  ns,
-		Env:      ns.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-
-	return text
-}
-
 func (ns *nightscout) getResult() (*NightscoutData, error) {
 	parseSingleElement := func(data []byte) (*NightscoutData, error) {
 		var result []*NightscoutData
@@ -105,7 +94,7 @@ func (ns *nightscout) getResult() (*NightscoutData, error) {
 		return result[0], nil
 	}
 	getCacheValue := func(key string) (*NightscoutData, error) {
-		val, found := ns.env.cache().get(key)
+		val, found := ns.env.Cache().Get(key)
 		// we got something from the cache
 		if found {
 			if data, err := parseSingleElement([]byte(val)); err == nil {
@@ -143,7 +132,7 @@ func (ns *nightscout) getResult() (*NightscoutData, error) {
 
 	if cacheTimeout > 0 {
 		// persist new sugars in cache
-		ns.env.cache().set(url, string(body), cacheTimeout)
+		ns.env.Cache().Set(url, string(body), cacheTimeout)
 	}
 	return data, nil
 }

src/segment_nightscout_test.go

@@ -136,16 +136,11 @@ func TestNSSegment(t *testing.T) {
 		}
 
 		cache := &MockedCache{}
-		cache.On("get", FAKEAPIURL).Return(tc.JSONResponse, !tc.CacheFoundFail)
-		cache.On("set", FAKEAPIURL, tc.JSONResponse, tc.CacheTimeout).Return()
+		cache.On("Get", FAKEAPIURL).Return(tc.JSONResponse, !tc.CacheFoundFail)
+		cache.On("Set", FAKEAPIURL, tc.JSONResponse, tc.CacheTimeout).Return()
 
 		env.On("HTTPRequest", FAKEAPIURL).Return([]byte(tc.JSONResponse), tc.Error)
-		env.On("cache").Return(cache)
-		env.onTemplate()
-
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
+		env.On("Cache").Return(cache)
 
 		ns := &nightscout{
 			props: props,
@@ -158,6 +153,9 @@ func TestNSSegment(t *testing.T) {
 			continue
 		}
 
-		assert.Equal(t, tc.ExpectedString, ns.string(), tc.Case)
+		if tc.Template == "" {
+			tc.Template = ns.template()
+		}
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, ns), tc.Case)
 	}
 }

src/segment_node.go

@@ -17,9 +17,8 @@ const (
 	FetchPackageManager Property = "fetch_package_manager"
 )
 
-func (n *node) string() string {
-	segmentTemplate := n.language.props.getString(SegmentTemplate, "{{ if .PackageManagerIcon }}{{ .PackageManagerIcon }} {{ end }}{{ .Full }}")
-	return n.language.string(segmentTemplate, n)
+func (n *node) template() string {
+	return "{{ if .PackageManagerIcon }}{{ .PackageManagerIcon }} {{ end }}{{ .Full }}"
 }
 
 func (n *node) init(props Properties, env Environment) {
@@ -48,17 +47,17 @@ func (n *node) loadContext() {
 	if !n.language.props.getBool(FetchPackageManager, false) {
 		return
 	}
-	if n.language.env.hasFiles("yarn.lock") {
+	if n.language.env.HasFiles("yarn.lock") {
 		n.PackageManagerIcon = n.language.props.getString(YarnIcon, " \uF61A")
 		return
 	}
-	if n.language.env.hasFiles("package-lock.json") || n.language.env.hasFiles("package.json") {
+	if n.language.env.HasFiles("package-lock.json") || n.language.env.HasFiles("package.json") {
 		n.PackageManagerIcon = n.language.props.getString(NPMIcon, " \uE71E")
 	}
 }
 
 func (n *node) matchesVersionFile() bool {
-	fileVersion := n.language.env.getFileContent(".nvmrc")
+	fileVersion := n.language.env.FileContent(".nvmrc")
 	if len(fileVersion) == 0 {
 		return true
 	}

src/segment_node_test.go

@@ -30,7 +30,7 @@ func TestNodeMatchesVersionFile(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getFileContent", ".nvmrc").Return(tc.RCVersion)
+		env.On("FileContent", ".nvmrc").Return(tc.RCVersion)
 
 		node := &node{
 			language: language{
@@ -61,9 +61,9 @@ func TestNodeInContext(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasFiles", "yarn.lock").Return(tc.HasYarn)
-		env.On("hasFiles", "package-lock.json").Return(tc.hasNPM)
-		env.On("hasFiles", "package.json").Return(tc.hasDefault)
+		env.On("HasFiles", "yarn.lock").Return(tc.HasYarn)
+		env.On("HasFiles", "package-lock.json").Return(tc.hasNPM)
+		env.On("HasFiles", "package.json").Return(tc.hasDefault)
 		node := &node{
 			language: language{
 				env: env,

src/segment_os.go

@@ -56,86 +56,76 @@ const (
 	DisplayDistroName Property = "display_distro_name"
 )
 
-func (n *osInfo) enabled() bool {
-	goos := n.env.getRuntimeGOOS()
+func (oi *osInfo) template() string {
+	return "{{ if .WSL }}WSL at {{ end }}{{.Icon}}"
+}
+
+func (oi *osInfo) enabled() bool {
+	goos := oi.env.GOOS()
 	switch goos {
 	case windowsPlatform:
-		n.Icon = n.props.getString(Windows, "\uE62A")
+		oi.Icon = oi.props.getString(Windows, "\uE62A")
 	case darwinPlatform:
-		n.Icon = n.props.getString(MacOS, "\uF179")
+		oi.Icon = oi.props.getString(MacOS, "\uF179")
 	case linuxPlatform:
-		platform := n.env.getPlatform()
-		displayDistroName := n.props.getBool(DisplayDistroName, false)
+		platform := oi.env.Platform()
+		displayDistroName := oi.props.getBool(DisplayDistroName, false)
 		if displayDistroName {
-			n.Icon = platform
+			oi.Icon = platform
 			break
 		}
-		n.Icon = n.getDistroIcon(platform)
+		oi.Icon = oi.getDistroIcon(platform)
 	default:
-		n.Icon = goos
+		oi.Icon = goos
 	}
 	return true
 }
 
-func (n *osInfo) string() string {
-	segmentTemplate := n.props.getString(SegmentTemplate, "{{ if .WSL }}WSL at {{ end }}{{.Icon}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  n,
-		Env:      n.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
-func (n *osInfo) getDistroIcon(distro string) string {
+func (oi *osInfo) getDistroIcon(distro string) string {
 	switch distro {
 	case "alpine":
-		return n.props.getString(Alpine, "\uF300")
+		return oi.props.getString(Alpine, "\uF300")
 	case "aosc":
-		return n.props.getString(Aosc, "\uF301")
+		return oi.props.getString(Aosc, "\uF301")
 	case "arch":
-		return n.props.getString(Arch, "\uF303")
+		return oi.props.getString(Arch, "\uF303")
 	case "centos":
-		return n.props.getString(Centos, "\uF304")
+		return oi.props.getString(Centos, "\uF304")
 	case "coreos":
-		return n.props.getString(Coreos, "\uF305")
+		return oi.props.getString(Coreos, "\uF305")
 	case "debian":
-		return n.props.getString(Debian, "\uF306")
+		return oi.props.getString(Debian, "\uF306")
 	case "devuan":
-		return n.props.getString(Devuan, "\uF307")
+		return oi.props.getString(Devuan, "\uF307")
 	case "raspbian":
-		return n.props.getString(Raspbian, "\uF315")
+		return oi.props.getString(Raspbian, "\uF315")
 	case "elementary":
-		return n.props.getString(Elementary, "\uF309")
+		return oi.props.getString(Elementary, "\uF309")
 	case "fedora":
-		return n.props.getString(Fedora, "\uF30a")
+		return oi.props.getString(Fedora, "\uF30a")
 	case "gentoo":
-		return n.props.getString(Gentoo, "\uF30d")
+		return oi.props.getString(Gentoo, "\uF30d")
 	case "mageia":
-		return n.props.getString(Mageia, "\uF310")
+		return oi.props.getString(Mageia, "\uF310")
 	case "manjaro":
-		return n.props.getString(Manjaro, "\uF312")
+		return oi.props.getString(Manjaro, "\uF312")
 	case "mint":
-		return n.props.getString(Mint, "\uF30e")
+		return oi.props.getString(Mint, "\uF30e")
 	case "nixos":
-		return n.props.getString(Nixos, "\uF313")
+		return oi.props.getString(Nixos, "\uF313")
 	case "opensuse":
-		return n.props.getString(Opensuse, "\uF314")
+		return oi.props.getString(Opensuse, "\uF314")
 	case "sabayon":
-		return n.props.getString(Sabayon, "\uF317")
+		return oi.props.getString(Sabayon, "\uF317")
 	case "slackware":
-		return n.props.getString(Slackware, "\uF319")
+		return oi.props.getString(Slackware, "\uF319")
 	case "ubuntu":
-		return n.props.getString(Ubuntu, "\uF31b")
+		return oi.props.getString(Ubuntu, "\uF31b")
 	}
-	return n.props.getString(Linux, "\uF17C")
+	return oi.props.getString(Linux, "\uF17C")
 }
 
-func (n *osInfo) init(props Properties, env Environment) {
-	n.props = props
-	n.env = env
+func (oi *osInfo) init(props Properties, env Environment) {
+	oi.props = props
+	oi.env = env
 }

src/segment_os_test.go

@@ -61,9 +61,9 @@ func TestOSInfo(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
-		env.On("getPlatform").Return(tc.Platform)
-		env.On("templateCache").Return(&templateCache{
+		env.On("GOOS").Return(tc.GOOS)
+		env.On("Platform").Return(tc.Platform)
+		env.On("TemplateCache").Return(&TemplateCache{
 			Env: make(map[string]string),
 			WSL: tc.IsWSL,
 		})
@@ -76,6 +76,6 @@ func TestOSInfo(t *testing.T) {
 			},
 		}
 		_ = osInfo.enabled()
-		assert.Equal(t, tc.ExpectedString, osInfo.string(), tc.Case)
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, osInfo.template(), osInfo), tc.Case)
 	}
 }

src/segment_owm.go

@@ -50,18 +50,8 @@ func (d *owm) enabled() bool {
 	return err == nil
 }
 
-func (d *owm) string() string {
-	segmentTemplate := d.props.getString(SegmentTemplate, "{{.Weather}} ({{.Temperature}}{{.UnitIcon}})")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  d,
-		Env:      d.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (d *owm) template() string {
+	return "{{ .Weather }} ({{ .Temperature }}{{ .UnitIcon }})"
 }
 
 func (d *owm) getResult() (*owmDataResponse, error) {
@@ -69,14 +59,14 @@ func (d *owm) getResult() (*owmDataResponse, error) {
 	response := new(owmDataResponse)
 	if cacheTimeout > 0 {
 		// check if data stored in cache
-		val, found := d.env.cache().get(CacheKeyResponse)
+		val, found := d.env.Cache().Get(CacheKeyResponse)
 		// we got something from te cache
 		if found {
 			err := json.Unmarshal([]byte(val), response)
 			if err != nil {
 				return nil, err
 			}
-			d.URL, _ = d.env.cache().get(CacheKeyURL)
+			d.URL, _ = d.env.Cache().Get(CacheKeyURL)
 			return response, nil
 		}
 	}
@@ -98,8 +88,8 @@ func (d *owm) getResult() (*owmDataResponse, error) {
 
 	if cacheTimeout > 0 {
 		// persist new forecasts in cache
-		d.env.cache().set(CacheKeyResponse, string(body), cacheTimeout)
-		d.env.cache().set(CacheKeyURL, d.URL, cacheTimeout)
+		d.env.Cache().Set(CacheKeyResponse, string(body), cacheTimeout)
+		d.env.Cache().Set(CacheKeyURL, d.URL, cacheTimeout)
 	}
 	return response, nil
 }

src/segment_owm_test.go

@@ -59,11 +59,6 @@ func TestOWMSegmentSingle(t *testing.T) {
 		}
 
 		env.On("HTTPRequest", OWMAPIURL).Return([]byte(tc.JSONResponse), tc.Error)
-		env.onTemplate()
-
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
 
 		o := &owm{
 			props: props,
@@ -76,7 +71,10 @@ func TestOWMSegmentSingle(t *testing.T) {
 			continue
 		}
 
-		assert.Equal(t, tc.ExpectedString, o.string(), tc.Case)
+		if tc.Template == "" {
+			tc.Template = o.template()
+		}
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, o), tc.Case)
 	}
 }
 
@@ -186,7 +184,6 @@ func TestOWMSegmentIcons(t *testing.T) {
 		expectedString := fmt.Sprintf("%s (20°C)", tc.ExpectedIconString)
 
 		env.On("HTTPRequest", OWMAPIURL).Return([]byte(response), nil)
-		env.onTemplate()
 
 		o := &owm{
 			props: properties{
@@ -199,7 +196,7 @@ func TestOWMSegmentIcons(t *testing.T) {
 		}
 
 		assert.Nil(t, o.setStatus())
-		assert.Equal(t, expectedString, o.string(), tc.Case)
+		assert.Equal(t, expectedString, renderTemplate(env, o.template(), o), tc.Case)
 	}
 
 	// test with hyperlink enabled
@@ -210,7 +207,6 @@ func TestOWMSegmentIcons(t *testing.T) {
 		expectedString := fmt.Sprintf("[%s (20°C)](http://api.openweathermap.org/data/2.5/weather?q=AMSTERDAM,NL&units=metric&appid=key)", tc.ExpectedIconString)
 
 		env.On("HTTPRequest", OWMAPIURL).Return([]byte(response), nil)
-		env.onTemplate()
 
 		o := &owm{
 			props: properties{
@@ -218,13 +214,12 @@ func TestOWMSegmentIcons(t *testing.T) {
 				Location:     "AMSTERDAM,NL",
 				Units:        "metric",
 				CacheTimeout: 0,
-				SegmentTemplate: "[{{.Weather}} ({{.Temperature}}{{.UnitIcon}})]({{.URL}})",
 			},
 			env: env,
 		}
 
 		assert.Nil(t, o.setStatus())
-		assert.Equal(t, expectedString, o.string(), tc.Case)
+		assert.Equal(t, expectedString, renderTemplate(env, "[{{.Weather}} ({{.Temperature}}{{.UnitIcon}})]({{.URL}})", o), tc.Case)
 	}
 }
 func TestOWMSegmentFromCache(t *testing.T) {
@@ -241,14 +236,13 @@ func TestOWMSegmentFromCache(t *testing.T) {
 		},
 		env: env,
 	}
-	cache.On("get", "owm_response").Return(response, true)
-	cache.On("get", "owm_url").Return("http://api.openweathermap.org/data/2.5/weather?q=AMSTERDAM,NL&units=metric&appid=key", true)
-	cache.On("set").Return()
-	env.On("cache").Return(cache)
-	env.onTemplate()
+	cache.On("Get", "owm_response").Return(response, true)
+	cache.On("Get", "owm_url").Return("http://api.openweathermap.org/data/2.5/weather?q=AMSTERDAM,NL&units=metric&appid=key", true)
+	cache.On("Set").Return()
+	env.On("Cache").Return(cache)
 
 	assert.Nil(t, o.setStatus())
-	assert.Equal(t, expectedString, o.string())
+	assert.Equal(t, expectedString, renderTemplate(env, o.template(), o), "should return the cached response")
 }
 
 func TestOWMSegmentFromCacheWithHyperlink(t *testing.T) {
@@ -263,16 +257,14 @@ func TestOWMSegmentFromCacheWithHyperlink(t *testing.T) {
 			APIKey:   "key",
 			Location: "AMSTERDAM,NL",
 			Units:    "metric",
-			SegmentTemplate: "[{{.Weather}} ({{.Temperature}}{{.UnitIcon}})]({{.URL}})",
 		},
 		env: env,
 	}
-	cache.On("get", "owm_response").Return(response, true)
-	cache.On("get", "owm_url").Return("http://api.openweathermap.org/data/2.5/weather?q=AMSTERDAM,NL&units=metric&appid=key", true)
-	cache.On("set").Return()
-	env.On("cache").Return(cache)
-	env.onTemplate()
+	cache.On("Get", "owm_response").Return(response, true)
+	cache.On("Get", "owm_url").Return("http://api.openweathermap.org/data/2.5/weather?q=AMSTERDAM,NL&units=metric&appid=key", true)
+	cache.On("Set").Return()
+	env.On("Cache").Return(cache)
 
 	assert.Nil(t, o.setStatus())
-	assert.Equal(t, expectedString, o.string())
+	assert.Equal(t, expectedString, renderTemplate(env, "[{{.Weather}} ({{.Temperature}}{{.UnitIcon}})]({{.URL}})", o))
 }

src/segment_path.go

@@ -54,8 +54,12 @@ const (
 	MaxDepth Property = "max_depth"
 )
 
+func (pt *path) template() string {
+	return "{{ .Path }}"
+}
+
 func (pt *path) enabled() bool {
-	pt.pwd = pt.env.pwd()
+	pt.pwd = pt.env.Pwd()
 	switch style := pt.props.getString(Style, Agnoster); style {
 	case Agnoster:
 		pt.Path = pt.getAgnosterPath()
@@ -80,32 +84,18 @@ func (pt *path) enabled() bool {
 		pt.Path = fmt.Sprintf("Path style: %s is not available", style)
 	}
 	pt.Path = pt.formatWindowsDrive(pt.Path)
-	if pt.env.isWsl() {
-		pt.Location, _ = pt.env.runCommand("wslpath", "-m", pt.pwd)
+	if pt.env.IsWsl() {
+		pt.Location, _ = pt.env.RunCommand("wslpath", "-m", pt.pwd)
 	} else {
 		pt.Location = pt.pwd
 	}
 
-	pt.StackCount = pt.env.stackCount()
+	pt.StackCount = pt.env.StackCount()
 	return true
 }
 
-func (pt *path) string() string {
-	segmentTemplate := pt.props.getString(SegmentTemplate, "{{ .Path }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  pt,
-		Env:      pt.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (pt *path) formatWindowsDrive(pwd string) string {
-	if pt.env.getRuntimeGOOS() != windowsPlatform || !strings.HasSuffix(pwd, ":") {
+	if pt.env.GOOS() != windowsPlatform || !strings.HasSuffix(pwd, ":") {
 		return pwd
 	}
 	return pwd + "\\"
@@ -119,7 +109,7 @@ func (pt *path) init(props Properties, env Environment) {
 func (pt *path) getMixedPath() string {
 	var buffer strings.Builder
 	pwd := pt.getPwd()
-	splitted := strings.Split(pwd, pt.env.getPathSeperator())
+	splitted := strings.Split(pwd, pt.env.PathSeperator())
 	threshold := int(pt.props.getFloat64(MixedThreshold, 4))
 	for i, part := range splitted {
 		if part == "" {
@@ -130,7 +120,7 @@ func (pt *path) getMixedPath() string {
 		if len(part) > threshold && i != 0 && i != len(splitted)-1 {
 			folder = pt.props.getString(FolderIcon, "..")
 		}
-		separator := pt.props.getString(FolderSeparatorIcon, pt.env.getPathSeperator())
+		separator := pt.props.getString(FolderSeparatorIcon, pt.env.PathSeperator())
 		if i == 0 {
 			separator = ""
 		}
@@ -146,7 +136,7 @@ func (pt *path) getAgnosterPath() string {
 	buffer.WriteString(pt.rootLocation())
 	pathDepth := pt.pathDepth(pwd)
 	folderIcon := pt.props.getString(FolderIcon, "..")
-	separator := pt.props.getString(FolderSeparatorIcon, pt.env.getPathSeperator())
+	separator := pt.props.getString(FolderSeparatorIcon, pt.env.PathSeperator())
 	for i := 1; i < pathDepth; i++ {
 		buffer.WriteString(fmt.Sprintf("%s%s", separator, folderIcon))
 	}
@@ -158,7 +148,7 @@ func (pt *path) getAgnosterPath() string {
 
 func (pt *path) getAgnosterLeftPath() string {
 	pwd := pt.getPwd()
-	separator := pt.env.getPathSeperator()
+	separator := pt.env.PathSeperator()
 	pwd = strings.Trim(pwd, separator)
 	splitted := strings.Split(pwd, separator)
 	folderIcon := pt.props.getString(FolderIcon, "..")
@@ -182,8 +172,8 @@ func (pt *path) getAgnosterLeftPath() string {
 func (pt *path) getLetterPath() string {
 	var buffer strings.Builder
 	pwd := pt.getPwd()
-	splitted := strings.Split(pwd, pt.env.getPathSeperator())
-	separator := pt.props.getString(FolderSeparatorIcon, pt.env.getPathSeperator())
+	splitted := strings.Split(pwd, pt.env.PathSeperator())
+	separator := pt.props.getString(FolderSeparatorIcon, pt.env.PathSeperator())
 	for i := 0; i < len(splitted)-1; i++ {
 		folder := splitted[i]
 		if len(folder) == 0 {
@@ -213,7 +203,7 @@ func (pt *path) getLetterPath() string {
 
 func (pt *path) getAgnosterFullPath() string {
 	pwd := pt.getPwd()
-	if len(pwd) > 1 && string(pwd[0]) == pt.env.getPathSeperator() {
+	if len(pwd) > 1 && string(pwd[0]) == pt.env.PathSeperator() {
 		pwd = pwd[1:]
 	}
 	return pt.replaceFolderSeparators(pwd)
@@ -229,7 +219,7 @@ func (pt *path) getAgnosterShortPath() string {
 	if pathDepth <= maxDepth {
 		return pt.getAgnosterFullPath()
 	}
-	pathSeparator := pt.env.getPathSeperator()
+	pathSeparator := pt.env.PathSeperator()
 	folderSeparator := pt.props.getString(FolderSeparatorIcon, pathSeparator)
 	folderIcon := pt.props.getString(FolderIcon, "..")
 	root := pt.rootLocation()
@@ -256,9 +246,9 @@ func (pt *path) getFolderPath() string {
 }
 
 func (pt *path) getPwd() string {
-	pwd := *pt.env.getArgs().PSWD
+	pwd := *pt.env.Args().PSWD
 	if pwd == "" {
-		pwd = pt.env.pwd()
+		pwd = pt.env.Pwd()
 	}
 	pwd = pt.replaceMappedLocations(pwd)
 	return pwd
@@ -267,10 +257,10 @@ func (pt *path) getPwd() string {
 func (pt *path) normalize(inputPath string) string {
 	normalized := inputPath
 	if strings.HasPrefix(inputPath, "~") {
-		normalized = pt.env.homeDir() + normalized[1:]
+		normalized = pt.env.Home() + normalized[1:]
 	}
 	normalized = strings.ReplaceAll(normalized, "\\", "/")
-	goos := pt.env.getRuntimeGOOS()
+	goos := pt.env.GOOS()
 	if goos == windowsPlatform || goos == darwinPlatform {
 		normalized = strings.ToLower(normalized)
 	}
@@ -286,7 +276,7 @@ func (pt *path) replaceMappedLocations(pwd string) string {
 	if pt.props.getBool(MappedLocationsEnabled, true) {
 		mappedLocations["HKCU:"] = pt.props.getString(WindowsRegistryIcon, "\uF013")
 		mappedLocations["HKLM:"] = pt.props.getString(WindowsRegistryIcon, "\uF013")
-		mappedLocations[pt.normalize(pt.env.homeDir())] = pt.props.getString(HomeIcon, "~")
+		mappedLocations[pt.normalize(pt.env.Home())] = pt.props.getString(HomeIcon, "~")
 	}
 
 	// merge custom locations with mapped locations
@@ -318,7 +308,7 @@ func (pt *path) replaceMappedLocations(pwd string) string {
 }
 
 func (pt *path) replaceFolderSeparators(pwd string) string {
-	defaultSeparator := pt.env.getPathSeperator()
+	defaultSeparator := pt.env.PathSeperator()
 	if pwd == defaultSeparator {
 		return pwd
 	}
@@ -332,19 +322,19 @@ func (pt *path) replaceFolderSeparators(pwd string) string {
 }
 
 func (pt *path) inHomeDir(pwd string) bool {
-	return strings.HasPrefix(pwd, pt.env.homeDir())
+	return strings.HasPrefix(pwd, pt.env.Home())
 }
 
 func (pt *path) rootLocation() string {
 	pwd := pt.getPwd()
-	pwd = strings.TrimPrefix(pwd, pt.env.getPathSeperator())
-	splitted := strings.Split(pwd, pt.env.getPathSeperator())
+	pwd = strings.TrimPrefix(pwd, pt.env.PathSeperator())
+	splitted := strings.Split(pwd, pt.env.PathSeperator())
 	rootLocation := splitted[0]
 	return rootLocation
 }
 
 func (pt *path) pathDepth(pwd string) int {
-	splitted := strings.Split(pwd, pt.env.getPathSeperator())
+	splitted := strings.Split(pwd, pt.env.PathSeperator())
 	depth := 0
 	for _, part := range splitted {
 		if part != "" {
@@ -363,7 +353,7 @@ func base(path string, env Environment) string {
 	}
 	volumeName := filepath.VolumeName(path)
 	// Strip trailing slashes.
-	for len(path) > 0 && string(path[len(path)-1]) == env.getPathSeperator() {
+	for len(path) > 0 && string(path[len(path)-1]) == env.PathSeperator() {
 		path = path[0 : len(path)-1]
 	}
 	if volumeName == path {
@@ -373,7 +363,7 @@ func base(path string, env Environment) string {
 	path = path[len(filepath.VolumeName(path)):]
 	// Find the last element
 	i := len(path) - 1
-	for i >= 0 && string(path[i]) != env.getPathSeperator() {
+	for i >= 0 && string(path[i]) != env.PathSeperator() {
 		i--
 	}
 	if i >= 0 {
@@ -381,7 +371,7 @@ func base(path string, env Environment) string {
 	}
 	// If empty now, it had only slashes.
 	if path == "" {
-		return env.getPathSeperator()
+		return env.PathSeperator()
 	}
 	return path
 }

src/segment_path_test.go

@@ -14,124 +14,124 @@ type MockedEnvironment struct {
 	mock.Mock
 }
 
-func (env *MockedEnvironment) getenv(key string) string {
+func (env *MockedEnvironment) Getenv(key string) string {
 	args := env.Called(key)
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) pwd() string {
+func (env *MockedEnvironment) Pwd() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) homeDir() string {
+func (env *MockedEnvironment) Home() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) hasFiles(pattern string) bool {
+func (env *MockedEnvironment) HasFiles(pattern string) bool {
 	args := env.Called(pattern)
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) hasFilesInDir(dir, pattern string) bool {
+func (env *MockedEnvironment) HasFilesInDir(dir, pattern string) bool {
 	args := env.Called(dir, pattern)
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) hasFolder(folder string) bool {
+func (env *MockedEnvironment) HasFolder(folder string) bool {
 	args := env.Called(folder)
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) getFileContent(file string) string {
+func (env *MockedEnvironment) FileContent(file string) string {
 	args := env.Called(file)
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getFoldersList(path string) []string {
+func (env *MockedEnvironment) FolderList(path string) []string {
 	args := env.Called(path)
 	return args.Get(0).([]string)
 }
 
-func (env *MockedEnvironment) getPathSeperator() string {
+func (env *MockedEnvironment) PathSeperator() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getCurrentUser() string {
+func (env *MockedEnvironment) User() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getHostName() (string, error) {
+func (env *MockedEnvironment) Host() (string, error) {
 	args := env.Called()
 	return args.String(0), args.Error(1)
 }
 
-func (env *MockedEnvironment) getRuntimeGOOS() string {
+func (env *MockedEnvironment) GOOS() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getPlatform() string {
+func (env *MockedEnvironment) Platform() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) hasCommand(command string) bool {
+func (env *MockedEnvironment) HasCommand(command string) bool {
 	args := env.Called(command)
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) runCommand(command string, args ...string) (string, error) {
+func (env *MockedEnvironment) RunCommand(command string, args ...string) (string, error) {
 	arguments := env.Called(command, args)
 	return arguments.String(0), arguments.Error(1)
 }
 
-func (env *MockedEnvironment) runShellCommand(shell, command string) string {
+func (env *MockedEnvironment) RunShellCommand(shell, command string) string {
 	args := env.Called(shell, command)
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) lastErrorCode() int {
+func (env *MockedEnvironment) ErrorCode() int {
 	args := env.Called()
 	return args.Int(0)
 }
 
-func (env *MockedEnvironment) executionTime() float64 {
+func (env *MockedEnvironment) ExecutionTime() float64 {
 	args := env.Called()
 	return float64(args.Int(0))
 }
 
-func (env *MockedEnvironment) isRunningAsRoot() bool {
+func (env *MockedEnvironment) Root() bool {
 	args := env.Called()
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) getArgs() *args {
+func (env *MockedEnvironment) Args() *Args {
 	arguments := env.Called()
-	return arguments.Get(0).(*args)
+	return arguments.Get(0).(*Args)
 }
 
-func (env *MockedEnvironment) getBatteryInfo() ([]*battery.Battery, error) {
+func (env *MockedEnvironment) BatteryInfo() ([]*battery.Battery, error) {
 	args := env.Called()
 	return args.Get(0).([]*battery.Battery), args.Error(1)
 }
 
-func (env *MockedEnvironment) getShellName() string {
+func (env *MockedEnvironment) Shell() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getWindowTitle(imageName, windowTitleRegex string) (string, error) {
+func (env *MockedEnvironment) WindowTitle(imageName, windowTitleRegex string) (string, error) {
 	args := env.Called(imageName)
 	return args.String(0), args.Error(1)
 }
 
-func (env *MockedEnvironment) getWindowsRegistryKeyValue(path string) (*windowsRegistryValue, error) {
+func (env *MockedEnvironment) WindowsRegistryKeyValue(path string) (*WindowsRegistryValue, error) {
 	args := env.Called(path)
-	return args.Get(0).(*windowsRegistryValue), args.Error(1)
+	return args.Get(0).(*WindowsRegistryValue), args.Error(1)
 }
 
 func (env *MockedEnvironment) HTTPRequest(url string, timeout int, requestModifiers ...HTTPRequestModifier) ([]byte, error) {
@@ -139,85 +139,99 @@ func (env *MockedEnvironment) HTTPRequest(url string, timeout int, requestModifi
 	return args.Get(0).([]byte), args.Error(1)
 }
 
-func (env *MockedEnvironment) hasParentFilePath(path string) (*fileInfo, error) {
+func (env *MockedEnvironment) HasParentFilePath(path string) (*FileInfo, error) {
 	args := env.Called(path)
-	return args.Get(0).(*fileInfo), args.Error(1)
+	return args.Get(0).(*FileInfo), args.Error(1)
 }
 
-func (env *MockedEnvironment) stackCount() int {
+func (env *MockedEnvironment) StackCount() int {
 	args := env.Called()
 	return args.Int(0)
 }
 
-func (env *MockedEnvironment) isWsl() bool {
+func (env *MockedEnvironment) IsWsl() bool {
 	args := env.Called()
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) isWsl2() bool {
+func (env *MockedEnvironment) IsWsl2() bool {
 	args := env.Called()
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) getTerminalWidth() (int, error) {
+func (env *MockedEnvironment) TerminalWidth() (int, error) {
 	args := env.Called()
 	return args.Int(0), args.Error(1)
 }
 
-func (env *MockedEnvironment) getCachePath() string {
+func (env *MockedEnvironment) CachePath() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) cache() cache {
+func (env *MockedEnvironment) Cache() Cache {
 	args := env.Called()
-	return args.Get(0).(cache)
+	return args.Get(0).(Cache)
 }
 
-func (env *MockedEnvironment) close() {
+func (env *MockedEnvironment) Close() {
 	_ = env.Called()
 }
 
-func (env *MockedEnvironment) logs() string {
+func (env *MockedEnvironment) Logs() string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) inWSLSharedDrive() bool {
+func (env *MockedEnvironment) InWSLSharedDrive() bool {
 	args := env.Called()
 	return args.Bool(0)
 }
 
-func (env *MockedEnvironment) convertToWindowsPath(path string) string {
+func (env *MockedEnvironment) ConvertToWindowsPath(path string) string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) convertToLinuxPath(path string) string {
+func (env *MockedEnvironment) ConvertToLinuxPath(path string) string {
 	args := env.Called()
 	return args.String(0)
 }
 
-func (env *MockedEnvironment) getWifiNetwork() (*wifiInfo, error) {
+func (env *MockedEnvironment) WifiNetwork() (*WifiInfo, error) {
 	args := env.Called()
-	return args.Get(0).(*wifiInfo), args.Error(1)
+	return args.Get(0).(*WifiInfo), args.Error(1)
 }
 
-func (env *MockedEnvironment) templateCache() *templateCache {
+func (env *MockedEnvironment) TemplateCache() *TemplateCache {
 	args := env.Called()
-	return args.Get(0).(*templateCache)
+	return args.Get(0).(*TemplateCache)
 }
 
-func (env *MockedEnvironment) onTemplate() {
+func renderTemplate(env *MockedEnvironment, segmentTemplate string, context interface{}) string {
+	found := false
 	for _, call := range env.Mock.ExpectedCalls {
-		if call.Method == "templateCache" {
-			return
+		if call.Method == "TemplateCache" {
+			found = true
+			break
 		}
 	}
-	env.On("templateCache").Return(&templateCache{
+	if !found {
+		env.On("TemplateCache").Return(&TemplateCache{
 			Env: make(map[string]string),
 		})
 	}
+	template := &textTemplate{
+		Template: segmentTemplate,
+		Context:  context,
+		Env:      env,
+	}
+	text, err := template.render()
+	if err != nil {
+		return err.Error()
+	}
+	return text
+}
 
 const (
 	homeBill        = "/home/bill"
@@ -229,7 +243,7 @@ const (
 func TestIsInHomeDirTrue(t *testing.T) {
 	home := homeBill
 	env := new(MockedEnvironment)
-	env.On("homeDir").Return(home)
+	env.On("Home").Return(home)
 	path := &path{
 		env: env,
 	}
@@ -244,7 +258,7 @@ func TestIsInHomeDirLevelTrue(t *testing.T) {
 		pwd += levelDir
 	}
 	env := new(MockedEnvironment)
-	env.On("homeDir").Return(home)
+	env.On("Home").Return(home)
 	path := &path{
 		env: env,
 	}
@@ -273,14 +287,14 @@ func TestRootLocationHome(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return(tc.HomePath)
-		env.On("pwd").Return(tc.Pwd)
-		args := &args{
+		env.On("Home").Return(tc.HomePath)
+		env.On("Pwd").Return(tc.Pwd)
+		args := &Args{
 			PSWD: &tc.Pswd,
 		}
-		env.On("getArgs").Return(args)
-		env.On("getPathSeperator").Return(tc.PathSeperator)
-		env.On("getRuntimeGOOS").Return("")
+		env.On("Args").Return(args)
+		env.On("PathSeperator").Return(tc.PathSeperator)
+		env.On("GOOS").Return("")
 		path := &path{
 			env: env,
 			props: properties{
@@ -296,7 +310,7 @@ func TestRootLocationHome(t *testing.T) {
 func TestIsInHomeDirFalse(t *testing.T) {
 	home := homeBill
 	env := new(MockedEnvironment)
-	env.On("homeDir").Return(home)
+	env.On("Home").Return(home)
 	path := &path{
 		env: env,
 	}
@@ -310,7 +324,7 @@ func TestPathDepthMultipleLevelsDeep(t *testing.T) {
 		pwd += levelDir
 	}
 	env := new(MockedEnvironment)
-	env.On("getPathSeperator").Return("/")
+	env.On("PathSeperator").Return("/")
 	env.On("getRunteGOOS").Return("")
 	path := &path{
 		env: env,
@@ -322,7 +336,7 @@ func TestPathDepthMultipleLevelsDeep(t *testing.T) {
 func TestPathDepthZeroLevelsDeep(t *testing.T) {
 	pwd := "/usr/"
 	env := new(MockedEnvironment)
-	env.On("getPathSeperator").Return("/")
+	env.On("PathSeperator").Return("/")
 	path := &path{
 		env: env,
 	}
@@ -333,7 +347,7 @@ func TestPathDepthZeroLevelsDeep(t *testing.T) {
 func TestPathDepthOneLevelDeep(t *testing.T) {
 	pwd := "/usr/location"
 	env := new(MockedEnvironment)
-	env.On("getPathSeperator").Return("/")
+	env.On("PathSeperator").Return("/")
 	path := &path{
 		env: env,
 	}
@@ -424,28 +438,26 @@ func TestAgnosterPathStyles(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getPathSeperator").Return(tc.PathSeperator)
-		env.On("homeDir").Return(tc.HomePath)
-		env.On("pwd").Return(tc.Pwd)
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
-		env.On("stackCount").Return(0)
-		env.On("isWsl").Return(false)
-		args := &args{
+		env.On("PathSeperator").Return(tc.PathSeperator)
+		env.On("Home").Return(tc.HomePath)
+		env.On("Pwd").Return(tc.Pwd)
+		env.On("GOOS").Return(tc.GOOS)
+		env.On("StackCount").Return(0)
+		env.On("IsWsl").Return(false)
+		args := &Args{
 			PSWD: &tc.Pswd,
 		}
-		env.On("getArgs").Return(args)
-		env.onTemplate()
+		env.On("Args").Return(args)
 		path := &path{
 			env: env,
 			props: properties{
 				FolderSeparatorIcon: tc.FolderSeparatorIcon,
 				Style:               tc.Style,
 				MaxDepth:            tc.MaxDepth,
-				SegmentTemplate:     "{{ .Path }}",
 			},
 		}
 		_ = path.enabled()
-		got := path.string()
+		got := renderTemplate(env, "{{ .Path }}", path)
 		assert.Equal(t, tc.Expected, got)
 	}
 }
@@ -547,23 +559,21 @@ func TestGetFullPath(t *testing.T) {
 		if len(tc.PathSeparator) == 0 {
 			tc.PathSeparator = "/"
 		}
-		env.On("getPathSeperator").Return(tc.PathSeparator)
-		env.On("homeDir").Return("/usr/home")
-		env.On("pwd").Return(tc.Pwd)
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
-		env.On("stackCount").Return(tc.StackCount)
-		env.On("isWsl").Return(false)
-		args := &args{
+		env.On("PathSeperator").Return(tc.PathSeparator)
+		env.On("Home").Return("/usr/home")
+		env.On("Pwd").Return(tc.Pwd)
+		env.On("GOOS").Return(tc.GOOS)
+		env.On("StackCount").Return(tc.StackCount)
+		env.On("IsWsl").Return(false)
+		args := &Args{
 			PSWD: &tc.Pswd,
 		}
-		env.On("getArgs").Return(args)
-		env.onTemplate()
+		env.On("Args").Return(args)
 		if len(tc.Template) == 0 {
 			tc.Template = "{{ if gt .StackCount 0 }}{{ .StackCount }} {{ end }}{{ .Path }}"
 		}
 		props := properties{
 			Style: tc.Style,
-			SegmentTemplate: tc.Template,
 		}
 		if tc.FolderSeparatorIcon != "" {
 			props[FolderSeparatorIcon] = tc.FolderSeparatorIcon
@@ -576,7 +586,7 @@ func TestGetFullPath(t *testing.T) {
 			props: props,
 		}
 		_ = path.enabled()
-		got := path.string()
+		got := renderTemplate(env, tc.Template, path)
 		assert.Equal(t, tc.Expected, got)
 	}
 }
@@ -600,14 +610,14 @@ func TestGetFullPathCustomMappedLocations(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getPathSeperator").Return("/")
-		env.On("homeDir").Return("/usr/home")
-		env.On("pwd").Return(tc.Pwd)
-		env.On("getRuntimeGOOS").Return("")
-		args := &args{
+		env.On("PathSeperator").Return("/")
+		env.On("Home").Return("/usr/home")
+		env.On("Pwd").Return(tc.Pwd)
+		env.On("GOOS").Return("")
+		args := &Args{
 			PSWD: &tc.Pwd,
 		}
-		env.On("getArgs").Return(args)
+		env.On("Args").Return(args)
 		path := &path{
 			env: env,
 			props: properties{
@@ -638,8 +648,8 @@ func TestNormalizePath(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return("/usr/home")
-		env.On("getRuntimeGOOS").Return(tc.GOOS)
+		env.On("Home").Return("/usr/home")
+		env.On("GOOS").Return(tc.GOOS)
 		pt := &path{
 			env: env,
 		}
@@ -651,14 +661,14 @@ func TestNormalizePath(t *testing.T) {
 func TestGetFolderPathCustomMappedLocations(t *testing.T) {
 	pwd := "/a/b/c/d"
 	env := new(MockedEnvironment)
-	env.On("getPathSeperator").Return("/")
-	env.On("homeDir").Return("/usr/home")
-	env.On("pwd").Return(pwd)
-	env.On("getRuntimeGOOS").Return("")
-	args := &args{
+	env.On("PathSeperator").Return("/")
+	env.On("Home").Return("/usr/home")
+	env.On("Pwd").Return(pwd)
+	env.On("GOOS").Return("")
+	args := &Args{
 		PSWD: &pwd,
 	}
-	env.On("getArgs").Return(args)
+	env.On("Args").Return(args)
 	path := &path{
 		env: env,
 		props: properties{
@@ -698,14 +708,14 @@ func TestAgnosterPath(t *testing.T) { // nolint:dupl
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return(tc.Home)
-		env.On("getPathSeperator").Return(tc.PathSeparator)
-		env.On("pwd").Return(tc.PWD)
-		env.On("getRuntimeGOOS").Return("")
-		args := &args{
+		env.On("Home").Return(tc.Home)
+		env.On("PathSeperator").Return(tc.PathSeparator)
+		env.On("Pwd").Return(tc.PWD)
+		env.On("GOOS").Return("")
+		args := &Args{
 			PSWD: &tc.PWD,
 		}
-		env.On("getArgs").Return(args)
+		env.On("Args").Return(args)
 		path := &path{
 			env: env,
 			props: properties{
@@ -746,14 +756,14 @@ func TestAgnosterLeftPath(t *testing.T) { // nolint:dupl
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("homeDir").Return(tc.Home)
-		env.On("getPathSeperator").Return(tc.PathSeparator)
-		env.On("pwd").Return(tc.PWD)
-		env.On("getRuntimeGOOS").Return("")
-		args := &args{
+		env.On("Home").Return(tc.Home)
+		env.On("PathSeperator").Return(tc.PathSeparator)
+		env.On("Pwd").Return(tc.PWD)
+		env.On("GOOS").Return("")
+		args := &Args{
 			PSWD: &tc.PWD,
 		}
-		env.On("getArgs").Return(args)
+		env.On("Args").Return(args)
 		path := &path{
 			env: env,
 			props: properties{
@@ -794,14 +804,14 @@ func TestGetPwd(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getPathSeperator").Return("/")
-		env.On("homeDir").Return("/usr/home")
-		env.On("pwd").Return(tc.Pwd)
-		env.On("getRuntimeGOOS").Return("")
-		args := &args{
+		env.On("PathSeperator").Return("/")
+		env.On("Home").Return("/usr/home")
+		env.On("Pwd").Return(tc.Pwd)
+		env.On("GOOS").Return("")
+		args := &Args{
 			PSWD: &tc.Pswd,
 		}
-		env.On("getArgs").Return(args)
+		env.On("Args").Return(args)
 		path := &path{
 			env: env,
 			props: properties{

src/segment_php.go

@@ -4,9 +4,8 @@ type php struct {
 	language
 }
 
-func (p *php) string() string {
-	segmentTemplate := p.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return p.language.string(segmentTemplate, p)
+func (p *php) template() string {
+	return languageTemplate
 }
 
 func (p *php) init(props Properties, env Environment) {

src/segment_php_test.go

@@ -27,6 +27,6 @@ func TestPhp(t *testing.T) {
 		j := &php{}
 		j.init(props, env)
 		assert.True(t, j.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, j.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, j.template(), j), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_plastic.go

@@ -39,21 +39,25 @@ func (p *plastic) init(props Properties, env Environment) {
 	p.env = env
 }
 
+func (p *plastic) template() string {
+	return "{{ .Selector }}"
+}
+
 func (p *plastic) enabled() bool {
-	if !p.env.hasCommand("cm") {
+	if !p.env.HasCommand("cm") {
 		return false
 	}
-	wkdir, err := p.env.hasParentFilePath(".plastic")
+	wkdir, err := p.env.HasParentFilePath(".plastic")
 	if err != nil {
 		return false
 	}
-	if p.shouldIgnoreRootRepository(wkdir.parentFolder) {
+	if p.shouldIgnoreRootRepository(wkdir.ParentFolder) {
 		return false
 	}
-	if !wkdir.isDir {
+	if !wkdir.IsDir {
 		return false
 	}
-	p.plasticWorkspaceFolder = wkdir.parentFolder
+	p.plasticWorkspaceFolder = wkdir.ParentFolder
 	displayStatus := p.props.getBool(FetchStatus, false)
 	p.setSelector()
 	if displayStatus {
@@ -62,20 +66,6 @@ func (p *plastic) enabled() bool {
 	return true
 }
 
-func (p *plastic) string() string {
-	segmentTemplate := p.props.getString(SegmentTemplate, "{{ .Selector }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  p,
-		Env:      p.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (p *plastic) setPlasticStatus() {
 	output := p.getCmCommandOutput("status", "--all", "--machinereadable")
 	splittedOutput := strings.Split(output, "\n")
@@ -139,7 +129,7 @@ func (p *plastic) getHeadChangeset() int {
 
 func (p *plastic) setSelector() {
 	var ref string
-	selector := p.getFileContents(p.plasticWorkspaceFolder+"/.plastic/", "plastic.selector")
+	selector := p.FileContents(p.plasticWorkspaceFolder+"/.plastic/", "plastic.selector")
 	// changeset
 	ref = p.parseChangesetSelector(selector)
 	if len(ref) > 0 {
@@ -173,6 +163,6 @@ func (p *plastic) parseBranchSelector(selector string) string {
 }
 
 func (p *plastic) getCmCommandOutput(args ...string) string {
-	val, _ := p.env.runCommand("cm", args...)
+	val, _ := p.env.RunCommand("cm", args...)
 	return val
 }

src/segment_plastic_test.go

@@ -8,9 +8,9 @@ import (
 
 func TestPlasticEnabledNotFound(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "cm").Return(false)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("isWsl").Return(false)
+	env.On("HasCommand", "cm").Return(false)
+	env.On("GOOS").Return("")
+	env.On("IsWsl").Return(false)
 	p := &plastic{
 		scm: scm{
 			env:   env,
@@ -22,16 +22,16 @@ func TestPlasticEnabledNotFound(t *testing.T) {
 
 func TestPlasticEnabledInWorkspaceDirectory(t *testing.T) {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "cm").Return(true)
-	env.On("getRuntimeGOOS").Return("")
-	env.On("isWsl").Return(false)
-	env.On("getFileContent", "/dir/.plastic//plastic.selector").Return("")
-	fileInfo := &fileInfo{
-		path:         "/dir/hello",
-		parentFolder: "/dir",
-		isDir:        true,
+	env.On("HasCommand", "cm").Return(true)
+	env.On("GOOS").Return("")
+	env.On("IsWsl").Return(false)
+	env.On("FileContent", "/dir/.plastic//plastic.selector").Return("")
+	fileInfo := &FileInfo{
+		Path:         "/dir/hello",
+		ParentFolder: "/dir",
+		IsDir:        true,
 	}
-	env.On("hasParentFilePath", ".plastic").Return(fileInfo, nil)
+	env.On("HasParentFilePath", ".plastic").Return(fileInfo, nil)
 	p := &plastic{
 		scm: scm{
 			env:   env,
@@ -39,13 +39,13 @@ func TestPlasticEnabledInWorkspaceDirectory(t *testing.T) {
 		},
 	}
 	assert.True(t, p.enabled())
-	assert.Equal(t, fileInfo.parentFolder, p.plasticWorkspaceFolder)
+	assert.Equal(t, fileInfo.ParentFolder, p.plasticWorkspaceFolder)
 }
 
 func setupCmStatusEnv(status, headStatus string) *plastic {
 	env := new(MockedEnvironment)
-	env.On("runCommand", "cm", []string{"status", "--all", "--machinereadable"}).Return(status, nil)
-	env.On("runCommand", "cm", []string{"status", "--head", "--machinereadable"}).Return(headStatus, nil)
+	env.On("RunCommand", "cm", []string{"status", "--all", "--machinereadable"}).Return(status, nil)
+	env.On("RunCommand", "cm", []string{"status", "--head", "--machinereadable"}).Return(headStatus, nil)
 	p := &plastic{
 		scm: scm{
 			env:   env,
@@ -327,12 +327,10 @@ func TestPlasticTemplateString(t *testing.T) {
 	for _, tc := range cases {
 		props := properties{
 			FetchStatus: true,
-			SegmentTemplate: tc.Template,
 		}
 		tc.Plastic.props = props
 		env := new(MockedEnvironment)
-		env.onTemplate()
 		tc.Plastic.env = env
-		assert.Equal(t, tc.Expected, tc.Plastic.string(), tc.Case)
+		assert.Equal(t, tc.Expected, renderTemplate(env, tc.Template, tc.Plastic), tc.Case)
 	}
 }

src/segment_posh_git.go

@@ -13,24 +13,14 @@ const (
 	poshGitEnv = "POSH_GIT_STATUS"
 )
 
-func (p *poshgit) enabled() bool {
-	status := p.env.getenv(poshGitEnv)
-	p.Status = strings.TrimSpace(status)
-	return p.Status != ""
+func (p *poshgit) template() string {
+	return "{{ .Status }}"
 }
 
-func (p *poshgit) string() string {
-	segmentTemplate := p.props.getString(SegmentTemplate, "{{ .Status }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  p,
-		Env:      p.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (p *poshgit) enabled() bool {
+	status := p.env.Getenv(poshGitEnv)
+	p.Status = strings.TrimSpace(status)
+	return p.Status != ""
 }
 
 func (p *poshgit) init(props Properties, env Environment) {

src/segment_posh_git_test.go

@@ -20,15 +20,14 @@ func TestPoshGitSegment(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.onTemplate()
-		env.On("getenv", poshGitEnv).Return(tc.PoshGitPrompt)
+		env.On("Getenv", poshGitEnv).Return(tc.PoshGitPrompt)
 		p := &poshgit{
 			env:   env,
 			props: &properties{},
 		}
-		assert.Equal(t, tc.Enabled, p.enabled())
+		assert.Equal(t, tc.Enabled, p.enabled(), tc.Case)
 		if tc.Enabled {
-			assert.Equal(t, tc.Expected, p.string())
+			assert.Equal(t, tc.Expected, renderTemplate(env, p.template(), p), tc.Case)
 		}
 	}
 }

src/segment_python.go

@@ -11,9 +11,8 @@ const (
 	FetchVirtualEnv Property = "fetch_virtual_env"
 )
 
-func (p *python) string() string {
-	segmentTemplate := p.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return p.language.string(segmentTemplate, p)
+func (p *python) template() string {
+	return languageTemplate
 }
 
 func (p *python) init(props Properties, env Environment) {
@@ -57,7 +56,7 @@ func (p *python) loadContext() {
 	}
 	var venv string
 	for _, venvVar := range venvVars {
-		venv = p.language.env.getenv(venvVar)
+		venv = p.language.env.Getenv(venvVar)
 		name := base(venv, p.language.env)
 		if p.canUseVenvName(name) {
 			p.Venv = name

src/segment_python_test.go

@@ -42,26 +42,27 @@ func TestPythonTemplate(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasCommand", "python").Return(true)
-		env.On("runCommand", "python", []string{"--version"}).Return("Python 3.8.4", nil)
-		env.On("hasFiles", "*.py").Return(true)
-		env.On("getenv", "VIRTUAL_ENV").Return(tc.VirtualEnvName)
-		env.On("getenv", "CONDA_ENV_PATH").Return(tc.VirtualEnvName)
-		env.On("getenv", "CONDA_DEFAULT_ENV").Return(tc.VirtualEnvName)
-		env.On("getenv", "PYENV_VERSION").Return(tc.VirtualEnvName)
-		env.On("getPathSeperator").Return("")
-		env.On("pwd").Return("/usr/home/project")
-		env.On("homeDir").Return("/usr/home")
-		env.onTemplate()
+		env.On("HasCommand", "python").Return(true)
+		env.On("RunCommand", "python", []string{"--version"}).Return("Python 3.8.4", nil)
+		env.On("HasFiles", "*.py").Return(true)
+		env.On("Getenv", "VIRTUAL_ENV").Return(tc.VirtualEnvName)
+		env.On("Getenv", "CONDA_ENV_PATH").Return(tc.VirtualEnvName)
+		env.On("Getenv", "CONDA_DEFAULT_ENV").Return(tc.VirtualEnvName)
+		env.On("Getenv", "PYENV_VERSION").Return(tc.VirtualEnvName)
+		env.On("PathSeperator").Return("")
+		env.On("Pwd").Return("/usr/home/project")
+		env.On("Home").Return("/usr/home")
 		props := properties{
 			FetchVersion: tc.FetchVersion,
-			SegmentTemplate: tc.Template,
 			DisplayMode:  DisplayModeAlways,
 		}
+		env.On("TemplateCache").Return(&TemplateCache{
+			Env: make(map[string]string),
+		})
 		python := &python{}
 		python.init(props, env)
 		assert.Equal(t, !tc.ExpectedDisabled, python.enabled(), tc.Case)
-		assert.Equal(t, tc.Expected, python.string(), tc.Case)
+		assert.Equal(t, tc.Expected, renderTemplate(env, tc.Template, python), tc.Case)
 	}
 }
 
@@ -76,11 +77,11 @@ func TestPythonPythonInContext(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getPathSeperator").Return("")
-		env.On("getenv", "VIRTUAL_ENV").Return(tc.VirtualEnvName)
-		env.On("getenv", "CONDA_ENV_PATH").Return("")
-		env.On("getenv", "CONDA_DEFAULT_ENV").Return("")
-		env.On("getenv", "PYENV_VERSION").Return("")
+		env.On("PathSeperator").Return("")
+		env.On("Getenv", "VIRTUAL_ENV").Return(tc.VirtualEnvName)
+		env.On("Getenv", "CONDA_ENV_PATH").Return("")
+		env.On("Getenv", "CONDA_DEFAULT_ENV").Return("")
+		env.On("Getenv", "PYENV_VERSION").Return("")
 		python := &python{}
 		python.init(properties{}, env)
 		python.loadContext()

src/segment_root.go

@@ -5,22 +5,12 @@ type root struct {
 	env   Environment
 }
 
-func (rt *root) enabled() bool {
-	return rt.env.isRunningAsRoot()
+func (rt *root) template() string {
+	return "\uF0E7"
 }
 
-func (rt *root) string() string {
-	segmentTemplate := rt.props.getString(SegmentTemplate, "\uF0E7")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  rt,
-		Env:      rt.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (rt *root) enabled() bool {
+	return rt.env.Root()
 }
 
 func (rt *root) init(props Properties, env Environment) {

src/segment_ruby.go

@@ -4,9 +4,8 @@ type ruby struct {
 	language
 }
 
-func (r *ruby) string() string {
-	segmentTemplate := r.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return r.language.string(segmentTemplate, r)
+func (r *ruby) template() string {
+	return languageTemplate
 }
 
 func (r *ruby) init(props Properties, env Environment) {

src/segment_ruby_test.go

@@ -83,28 +83,27 @@ func TestRuby(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("hasCommand", "rbenv").Return(tc.HasRbenv)
-		env.On("runCommand", "rbenv", []string{"version-name"}).Return(tc.Version, nil)
-		env.On("hasCommand", "rvm-prompt").Return(tc.HasRvmprompt)
-		env.On("runCommand", "rvm-prompt", []string{"i", "v", "g"}).Return(tc.Version, nil)
-		env.On("hasCommand", "chruby").Return(tc.HasChruby)
-		env.On("runCommand", "chruby", []string(nil)).Return(tc.Version, nil)
-		env.On("hasCommand", "asdf").Return(tc.HasAsdf)
-		env.On("runCommand", "asdf", []string{"current", "ruby"}).Return(tc.Version, nil)
-		env.On("hasCommand", "ruby").Return(tc.HasRuby)
-		env.On("runCommand", "ruby", []string{"--version"}).Return(tc.Version, nil)
-		env.On("hasFiles", "*.rb").Return(tc.HasRubyFiles)
-		env.On("hasFiles", "Rakefile").Return(tc.HasRakeFile)
-		env.On("hasFiles", "Gemfile").Return(tc.HasGemFile)
-		env.On("pwd").Return("/usr/home/project")
-		env.On("homeDir").Return("/usr/home")
-		env.onTemplate()
+		env.On("HasCommand", "rbenv").Return(tc.HasRbenv)
+		env.On("RunCommand", "rbenv", []string{"version-name"}).Return(tc.Version, nil)
+		env.On("HasCommand", "rvm-prompt").Return(tc.HasRvmprompt)
+		env.On("RunCommand", "rvm-prompt", []string{"i", "v", "g"}).Return(tc.Version, nil)
+		env.On("HasCommand", "chruby").Return(tc.HasChruby)
+		env.On("RunCommand", "chruby", []string(nil)).Return(tc.Version, nil)
+		env.On("HasCommand", "asdf").Return(tc.HasAsdf)
+		env.On("RunCommand", "asdf", []string{"current", "ruby"}).Return(tc.Version, nil)
+		env.On("HasCommand", "ruby").Return(tc.HasRuby)
+		env.On("RunCommand", "ruby", []string{"--version"}).Return(tc.Version, nil)
+		env.On("HasFiles", "*.rb").Return(tc.HasRubyFiles)
+		env.On("HasFiles", "Rakefile").Return(tc.HasRakeFile)
+		env.On("HasFiles", "Gemfile").Return(tc.HasGemFile)
+		env.On("Pwd").Return("/usr/home/project")
+		env.On("Home").Return("/usr/home")
 		props := properties{
 			FetchVersion: tc.FetchVersion,
 		}
 		ruby := &ruby{}
 		ruby.init(props, env)
 		assert.Equal(t, tc.ExpectedEnabled, ruby.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, ruby.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, ruby.template(), ruby), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_rust.go

@@ -4,9 +4,8 @@ type rust struct {
 	language
 }
 
-func (r *rust) string() string {
-	segmentTemplate := r.language.props.getString(SegmentTemplate, "{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}")
-	return r.language.string(segmentTemplate, r)
+func (r *rust) template() string {
+	return languageTemplate
 }
 
 func (r *rust) init(props Properties, env Environment) {

src/segment_rust_test.go

@@ -26,6 +26,6 @@ func TestRust(t *testing.T) {
 		r := &rust{}
 		r.init(props, env)
 		assert.True(t, r.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
-		assert.Equal(t, tc.ExpectedString, r.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, r.template(), r), fmt.Sprintf("Failed in case: %s", tc.Case))
 	}
 }

src/segment_session.go

@@ -16,18 +16,8 @@ func (s *session) enabled() bool {
 	return true
 }
 
-func (s *session) string() string {
-	segmentTemplate := s.props.getString(SegmentTemplate, "{{ .UserName}}@{{ .HostName }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  s,
-		Env:      s.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		text = err.Error()
-	}
-	return text
+func (s *session) template() string {
+	return "{{ .UserName }}@{{ .HostName }}"
 }
 
 func (s *session) init(props Properties, env Environment) {
@@ -41,7 +31,7 @@ func (s *session) activeSSHSession() bool {
 		"SSH_CLIENT",
 	}
 	for _, key := range keys {
-		content := s.env.getenv(key)
+		content := s.env.Getenv(key)
 		if content != "" {
 			return true
 		}

src/segment_session_test.go

@@ -87,16 +87,16 @@ func TestSessionSegmentTemplate(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getCurrentUser").Return(tc.UserName)
-		env.On("getRuntimeGOOS").Return("burp")
-		env.On("getHostName").Return(tc.ComputerName, nil)
+		env.On("User").Return(tc.UserName)
+		env.On("GOOS").Return("burp")
+		env.On("Host").Return(tc.ComputerName, nil)
 		var SSHSession string
 		if tc.SSHSession {
 			SSHSession = "zezzion"
 		}
-		env.On("getenv", "SSH_CONNECTION").Return(SSHSession)
-		env.On("getenv", "SSH_CLIENT").Return(SSHSession)
-		env.On("templateCache").Return(&templateCache{
+		env.On("Getenv", "SSH_CONNECTION").Return(SSHSession)
+		env.On("Getenv", "SSH_CLIENT").Return(SSHSession)
+		env.On("TemplateCache").Return(&TemplateCache{
 			UserName: tc.UserName,
 			HostName: tc.ComputerName,
 			Env: map[string]string{
@@ -108,11 +108,9 @@ func TestSessionSegmentTemplate(t *testing.T) {
 		})
 		session := &session{
 			env:   env,
-			props: properties{
-				SegmentTemplate: tc.Template,
-			},
+			props: properties{},
 		}
 		_ = session.enabled()
-		assert.Equal(t, tc.ExpectedString, session.string(), tc.Case)
+		assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, session), tc.Case)
 	}
 }

src/segment_shell.go

@@ -14,9 +14,13 @@ const (
 	MappedShellNames Property = "mapped_shell_names"
 )
 
+func (s *shell) template() string {
+	return "{{ .Name }}"
+}
+
 func (s *shell) enabled() bool {
 	mappedNames := s.props.getKeyValueMap(MappedShellNames, make(map[string]string))
-	s.Name = s.env.getShellName()
+	s.Name = s.env.Shell()
 	for key, val := range mappedNames {
 		if strings.EqualFold(s.Name, key) {
 			s.Name = val
@@ -26,20 +30,6 @@ func (s *shell) enabled() bool {
 	return true
 }
 
-func (s *shell) string() string {
-	segmentTemplate := s.props.getString(SegmentTemplate, "{{.Name}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  s,
-		Env:      s.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (s *shell) init(props Properties, env Environment) {
 	s.props = props
 	s.env = env

src/segment_shell_test.go

@@ -9,14 +9,13 @@ import (
 func TestWriteCurrentShell(t *testing.T) {
 	expected := "zsh"
 	env := new(MockedEnvironment)
-	env.On("getShellName").Return(expected, nil)
-	env.onTemplate()
+	env.On("Shell").Return(expected, nil)
 	s := &shell{
 		env:   env,
 		props: properties{},
 	}
 	_ = s.enabled()
-	assert.Equal(t, expected, s.string())
+	assert.Equal(t, expected, renderTemplate(env, s.template(), s))
 }
 
 func TestUseMappedShellNames(t *testing.T) {
@@ -30,8 +29,7 @@ func TestUseMappedShellNames(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("getShellName").Return(tc.Expected, nil)
-		env.onTemplate()
+		env.On("Shell").Return(tc.Expected, nil)
 		s := &shell{
 			env: env,
 			props: properties{
@@ -39,7 +37,7 @@ func TestUseMappedShellNames(t *testing.T) {
 			},
 		}
 		_ = s.enabled()
-		got := s.string()
+		got := renderTemplate(env, s.template(), s)
 		assert.Equal(t, tc.Expected, got)
 	}
 }

src/segment_spotify.go

@@ -27,19 +27,10 @@ const (
 	paused  = "paused"
 )
 
-func (s *spotify) string() string {
-	segmentTemplate := s.props.getString(SegmentTemplate, "{{.Icon}}{{ if ne .Status \"stopped\"}}{{.Artist}} - {{.Track}}{{ end }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  s,
-		Env:      s.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (s *spotify) template() string {
+	return "{{ .Icon }}{{ if ne .Status \"stopped\" }}{{ .Artist }} - {{ .Track }}{{ end }}"
 }
+
 func (s *spotify) resolveIcon() {
 	switch s.Status {
 	case stopped:

src/segment_spotify_darwin.go

@@ -7,10 +7,12 @@ func (s *spotify) enabled() bool {
 	// Check if running
 	running := s.runAppleScriptCommand("application \"Spotify\" is running")
 	if running == "false" || running == "" {
+		s.Status = stopped
 		return false
 	}
 	s.Status = s.runAppleScriptCommand("tell application \"Spotify\" to player state as string")
 	if err != nil {
+		s.Status = stopped
 		return false
 	}
 	if s.Status == stopped {
@@ -23,6 +25,6 @@ func (s *spotify) enabled() bool {
 }
 
 func (s *spotify) runAppleScriptCommand(command string) string {
-	val, _ := s.env.runCommand("osascript", "-e", command)
+	val, _ := s.env.RunCommand("osascript", "-e", command)
 	return val
 }

src/segment_spotify_darwin_test.go

@@ -3,61 +3,37 @@
 package main
 
 import (
+	"errors"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 )
 
-type spotifyArgs struct {
-	running  string
-	status   string
-	artist   string
-	track    string
-	runError error
+func TestSpotifyDarwinEnabledAndSpotifyPlaying(t *testing.T) {
+	cases := []struct {
+		Running  string
+		Expected string
+		Status   string
+		Artist   string
+		Track    string
+		Error    error
+	}{
+		{Running: "false", Expected: ""},
+		{Running: "false", Expected: "", Error: errors.New("oops")},
+		{Running: "true", Expected: "\ue602 Candlemass - Spellbreaker", Status: "playing", Artist: "Candlemass", Track: "Spellbreaker"},
+		{Running: "true", Expected: "\uF8E3 Candlemass - Spellbreaker", Status: "paused", Artist: "Candlemass", Track: "Spellbreaker"},
 	}
-
-func bootStrapSpotifyDarwinTest(args *spotifyArgs) *spotify {
+	for _, tc := range cases {
 		env := new(MockedEnvironment)
-	env.On("runCommand", "osascript", []string{"-e", "application \"Spotify\" is running"}).Return(args.running, args.runError)
-	env.On("runCommand", "osascript", []string{"-e", "tell application \"Spotify\" to player state as string"}).Return(args.status, nil)
-	env.On("runCommand", "osascript", []string{"-e", "tell application \"Spotify\" to artist of current track as string"}).Return(args.artist, nil)
-	env.On("runCommand", "osascript", []string{"-e", "tell application \"Spotify\" to name of current track as string"}).Return(args.track, nil)
-	env.onTemplate()
+		env.On("RunCommand", "osascript", []string{"-e", "application \"Spotify\" is running"}).Return(tc.Running, tc.Error)
+		env.On("RunCommand", "osascript", []string{"-e", "tell application \"Spotify\" to player state as string"}).Return(tc.Status, nil)
+		env.On("RunCommand", "osascript", []string{"-e", "tell application \"Spotify\" to artist of current track as string"}).Return(tc.Artist, nil)
+		env.On("RunCommand", "osascript", []string{"-e", "tell application \"Spotify\" to name of current track as string"}).Return(tc.Track, nil)
 		s := &spotify{
 			env:   env,
 			props: properties{},
 		}
-	return s
+		assert.Equal(t, tc.Running == "true", s.enabled())
+		assert.Equal(t, tc.Expected, renderTemplate(env, s.template(), s))
 	}
-
-func TestSpotifyDarwinEnabledAndSpotifyNotRunning(t *testing.T) {
-	args := &spotifyArgs{
-		running: "false",
-	}
-	s := bootStrapSpotifyDarwinTest(args)
-	assert.Equal(t, false, s.enabled())
-}
-
-func TestSpotifyDarwinEnabledAndSpotifyPlaying(t *testing.T) {
-	args := &spotifyArgs{
-		running: "true",
-		status:  "playing",
-		artist:  "Candlemass",
-		track:   "Spellbreaker",
-	}
-	s := bootStrapSpotifyDarwinTest(args)
-	assert.Equal(t, true, s.enabled())
-	assert.Equal(t, "\ue602 Candlemass - Spellbreaker", s.string())
-}
-
-func TestSpotifyDarwinEnabledAndSpotifyPaused(t *testing.T) {
-	args := &spotifyArgs{
-		running: "true",
-		status:  "paused",
-		artist:  "Candlemass",
-		track:   "Spellbreaker",
-	}
-	s := bootStrapSpotifyDarwinTest(args)
-	assert.Equal(t, true, s.enabled())
-	assert.Equal(t, "\uF8E3 Candlemass - Spellbreaker", s.string())
 }

src/segment_spotify_test.go

@@ -9,7 +9,6 @@ import (
 func TestSpotifyStringPlayingSong(t *testing.T) {
 	expected := "\ue602 Candlemass - Spellbreaker"
 	env := new(MockedEnvironment)
-	env.onTemplate()
 	s := &spotify{
 		MusicPlayer: MusicPlayer{
 			Artist: "Candlemass",
@@ -20,13 +19,12 @@ func TestSpotifyStringPlayingSong(t *testing.T) {
 		props: properties{},
 		env:   env,
 	}
-	assert.Equal(t, expected, s.string())
+	assert.Equal(t, expected, renderTemplate(env, s.template(), s))
 }
 
 func TestSpotifyStringStoppedSong(t *testing.T) {
 	expected := "\uf04d "
 	env := new(MockedEnvironment)
-	env.onTemplate()
 	s := &spotify{
 		MusicPlayer: MusicPlayer{
 			Artist: "Candlemass",
@@ -37,5 +35,5 @@ func TestSpotifyStringStoppedSong(t *testing.T) {
 		props: properties{},
 		env:   env,
 	}
-	assert.Equal(t, expected, s.string())
+	assert.Equal(t, expected, renderTemplate(env, s.template(), s))
 }

src/segment_spotify_windows.go

@@ -9,7 +9,7 @@ import (
 func (s *spotify) enabled() bool {
 	// search for spotify window to retrieve the title
 	// Can be either "Spotify xxx" or the song name "Candlemass - Spellbreaker"
-	spotifyWindowTitle, err := s.env.getWindowTitle("spotify.exe", "^(Spotify.*)|(.*\\s-\\s.*)$")
+	spotifyWindowTitle, err := s.env.WindowTitle("spotify.exe", "^(Spotify.*)|(.*\\s-\\s.*)$")
 	if err != nil {
 		return false
 	}

src/segment_spotify_windows_test.go

@@ -16,7 +16,7 @@ type spotifyArgs struct {
 
 func bootStrapSpotifyWindowsTest(args *spotifyArgs) *spotify {
 	env := new(MockedEnvironment)
-	env.On("getWindowTitle", "spotify.exe").Return(args.title, args.runError)
+	env.On("WindowTitle", "spotify.exe").Return(args.title, args.runError)
 	env.onTemplate()
 	s := &spotify{
 		env:   env,

src/segment_spotify_wsl.go

@@ -8,10 +8,10 @@ import (
 )
 
 func (s *spotify) enabled() bool {
-	if !s.env.isWsl() {
+	if !s.env.IsWsl() {
 		return false
 	}
-	tlist, err := s.env.runCommand("tasklist.exe", "/V", "/FI", "Imagename eq Spotify.exe", "/FO", "CSV", "/NH")
+	tlist, err := s.env.RunCommand("tasklist.exe", "/V", "/FI", "Imagename eq Spotify.exe", "/FO", "CSV", "/NH")
 	if err != nil || strings.HasPrefix(tlist, "INFO") {
 		return false
 	}

src/segment_spotify_wsl_test.go

@@ -52,8 +52,8 @@ func TestSpotifyWsl(t *testing.T) {
 	}
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.On("isWsl").Return(true)
-		env.On("runCommand", "tasklist.exe", []string{"/V", "/FI", "Imagename eq Spotify.exe", "/FO", "CSV", "/NH"}).Return(tc.ExecOutput, nil)
+		env.On("IsWsl").Return(true)
+		env.On("RunCommand", "tasklist.exe", []string{"/V", "/FI", "Imagename eq Spotify.exe", "/FO", "CSV", "/NH"}).Return(tc.ExecOutput, nil)
 		env.onTemplate()
 		s := &spotify{
 			env:   env,

src/segment_strava.go

@@ -68,6 +68,10 @@ func (a *AuthError) Error() string {
 	return a.message
 }
 
+func (s *strava) template() string {
+	return "{{ if .Error }}{{ .Error }}{{ else }}{{ .Ago }}{{ end }}"
+}
+
 func (s *strava) enabled() bool {
 	data, err := s.getResult()
 	if err == nil {
@@ -75,6 +79,7 @@ func (s *strava) enabled() bool {
 		s.Icon = s.getActivityIcon()
 		s.Hours = s.getHours()
 		s.Ago = s.getAgo()
+		s.URL = fmt.Sprintf("https://www.strava.com/activities/%d", s.ID)
 		return true
 	}
 	if _, s.Authenticate = err.(*AuthError); s.Authenticate {
@@ -117,31 +122,13 @@ func (s *strava) getActivityIcon() string {
 	return s.props.getString(UnknownActivityIcon, "\ue213")
 }
 
-func (s *strava) string() string {
-	if s.Error != "" {
-		return s.Error
-	}
-	segmentTemplate := s.props.getString(SegmentTemplate, "{{ .Ago }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  s,
-		Env:      s.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	s.URL = fmt.Sprintf("https://www.strava.com/activities/%d", s.ID)
-	return text
-}
-
 func (s *strava) getAccessToken() (string, error) {
 	// get directly from cache
-	if acccessToken, OK := s.env.cache().get(StravaAccessToken); OK {
+	if acccessToken, OK := s.env.Cache().Get(StravaAccessToken); OK {
 		return acccessToken, nil
 	}
 	// use cached refersh token to get new access token
-	if refreshToken, OK := s.env.cache().get(StravaRefreshToken); OK {
+	if refreshToken, OK := s.env.Cache().Get(StravaRefreshToken); OK {
 		if acccessToken, err := s.refreshToken(refreshToken); err == nil {
 			return acccessToken, nil
 		}
@@ -176,8 +163,8 @@ func (s *strava) refreshToken(refreshToken string) (string, error) {
 		}
 	}
 	// add tokens to cache
-	s.env.cache().set(StravaAccessToken, tokens.AccessToken, tokens.ExpiresIn/60)
-	s.env.cache().set(StravaRefreshToken, tokens.RefreshToken, 2*525960) // it should never expire unless revoked, default to 2 year
+	s.env.Cache().Set(StravaAccessToken, tokens.AccessToken, tokens.ExpiresIn/60)
+	s.env.Cache().Set(StravaRefreshToken, tokens.RefreshToken, 2*525960) // it should never expire unless revoked, default to 2 year
 	return tokens.AccessToken, nil
 }
 
@@ -194,7 +181,7 @@ func (s *strava) getResult() (*StravaData, error) {
 		return result[0], nil
 	}
 	getCacheValue := func(key string) (*StravaData, error) {
-		val, found := s.env.cache().get(key)
+		val, found := s.env.Cache().Get(key)
 		// we got something from the cache
 		if found {
 			if data, err := parseSingleElement([]byte(val)); err == nil {
@@ -237,7 +224,7 @@ func (s *strava) getResult() (*StravaData, error) {
 	}
 	if cacheTimeout > 0 {
 		// persist new sugars in cache
-		s.env.cache().set(url, string(body), cacheTimeout)
+		s.env.Cache().Set(url, string(body), cacheTimeout)
 	}
 	return data, nil
 }

src/segment_strava_test.go

@@ -142,23 +142,19 @@ func TestStravaSegment(t *testing.T) {
 			CacheTimeout: tc.CacheTimeout,
 		}
 		cache := &MockedCache{}
-		cache.On("get", url).Return(tc.JSONResponse, !tc.CacheFoundFail)
-		cache.On("set", url, tc.JSONResponse, tc.CacheTimeout).Return()
+		cache.On("Get", url).Return(tc.JSONResponse, !tc.CacheFoundFail)
+		cache.On("Set", url, tc.JSONResponse, tc.CacheTimeout).Return()
 
-		cache.On("get", StravaAccessToken).Return(tc.AccessToken, !tc.AccessTokenCacheFoundFail)
-		cache.On("get", StravaRefreshToken).Return(tc.RefreshToken, !tc.RefreshTokenCacheFoundFail)
+		cache.On("Get", StravaAccessToken).Return(tc.AccessToken, !tc.AccessTokenCacheFoundFail)
+		cache.On("Get", StravaRefreshToken).Return(tc.RefreshToken, !tc.RefreshTokenCacheFoundFail)
 
-		cache.On("set", StravaRefreshToken, "NEW_REFRESHTOKEN", 2*525960)
-		cache.On("set", StravaAccessToken, "NEW_ACCESSTOKEN", 20)
+		cache.On("Set", StravaRefreshToken, "NEW_REFRESHTOKEN", 2*525960)
+		cache.On("Set", StravaAccessToken, "NEW_ACCESSTOKEN", 20)
 
 		env.On("HTTPRequest", url).Return([]byte(tc.JSONResponse), tc.Error)
 		env.On("HTTPRequest", tokenURL).Return([]byte(tc.TokenResponse), tc.Error)
-		env.On("cache").Return(cache)
-		env.onTemplate()
+		env.On("Cache").Return(cache)
 
-		if tc.Template != "" {
-			props[SegmentTemplate] = tc.Template
-		}
 		if tc.InitialAccessToken != "" {
 			props[AccessToken] = tc.InitialAccessToken
 		}
@@ -192,8 +188,11 @@ func TestStravaSegment(t *testing.T) {
 			continue
 		}
 
-		var a = ns.string()
+		if tc.Template == "" {
+			tc.Template = ns.template()
+		}
+		var got = renderTemplate(env, tc.Template, ns)
 
-		assert.Equal(t, tc.ExpectedString, a, tc.Case)
+		assert.Equal(t, tc.ExpectedString, got, tc.Case)
 	}
 }

src/segment_sysinfo.go

@@ -31,6 +31,10 @@ const (
 	Precision Property = "precision"
 )
 
+func (s *sysinfo) template() string {
+	return "{{ round .PhysicalPercentUsed .Precision }}"
+}
+
 func (s *sysinfo) enabled() bool {
 	if s.PhysicalPercentUsed == 0 && s.SwapPercentUsed == 0 {
 		return false
@@ -38,21 +42,6 @@ func (s *sysinfo) enabled() bool {
 	return true
 }
 
-func (s *sysinfo) string() string {
-	// keep old memory segment template
-	segmentTemplate := s.props.getString(SegmentTemplate, "{{ round .PhysicalPercentUsed .Precision }}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  s,
-		Env:      s.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
-}
-
 func (s *sysinfo) init(props Properties, env Environment) {
 	s.props = props
 	s.env = env

src/segment_sysinfo_test.go

@@ -50,17 +50,15 @@ func TestSysInfo(t *testing.T) {
 
 	for _, tc := range cases {
 		env := new(MockedEnvironment)
-		env.onTemplate()
 		tc.SysInfo.env = env
 		tc.SysInfo.props = properties{
 			Precision: tc.Precision,
-			SegmentTemplate: tc.Template,
 		}
 		enabled := tc.SysInfo.enabled()
 		if tc.ExpectDisabled {
 			assert.Equal(t, false, enabled, tc.Case)
 		} else {
-			assert.Equal(t, tc.ExpectedString, tc.SysInfo.string(), tc.Case)
+			assert.Equal(t, tc.ExpectedString, renderTemplate(env, tc.Template, tc.SysInfo), tc.Case)
 		}
 	}
 }

src/segment_terraform.go

@@ -6,18 +6,8 @@ type terraform struct {
 	WorkspaceName string
 }
 
-func (tf *terraform) string() string {
-	segmentTemplate := tf.props.getString(SegmentTemplate, "{{.WorkspaceName}}")
-	template := &textTemplate{
-		Template: segmentTemplate,
-		Context:  tf,
-		Env:      tf.env,
-	}
-	text, err := template.render()
-	if err != nil {
-		return err.Error()
-	}
-	return text
+func (tf *terraform) template() string {
+	return "{{ .WorkspaceName }}"
 }
 
 func (tf *terraform) init(props Properties, env Environment) {
@@ -27,9 +17,9 @@ func (tf *terraform) init(props Properties, env Environment) {
 
 func (tf *terraform) enabled() bool {
 	cmd := "terraform"
-	if !tf.env.hasCommand(cmd) || !tf.env.hasFolder(tf.env.pwd()+"/.terraform") {
+	if !tf.env.HasCommand(cmd) || !tf.env.HasFolder(tf.env.Pwd()+"/.terraform") {
 		return false
 	}
-	tf.WorkspaceName, _ = tf.env.runCommand(cmd, "workspace", "show")
+	tf.WorkspaceName, _ = tf.env.RunCommand(cmd, "workspace", "show")
 	return true
 }

src/segment_terraform_test.go

@@ -14,11 +14,10 @@ type terraformArgs struct {
 
 func bootStrapTerraformTest(args *terraformArgs) *terraform {
 	env := new(MockedEnvironment)
-	env.On("hasCommand", "terraform").Return(args.hasTfCommand)
-	env.On("hasFolder", "/.terraform").Return(args.hasTfFolder)
-	env.On("pwd").Return("")
-	env.On("runCommand", "terraform", []string{"workspace", "show"}).Return(args.workspaceName, nil)
-	env.onTemplate()
+	env.On("HasCommand", "terraform").Return(args.hasTfCommand)
+	env.On("HasFolder", "/.terraform").Return(args.hasTfFolder)
+	env.On("Pwd").Return("")
+	env.On("RunCommand", "terraform", []string{"workspace", "show"}).Return(args.workspaceName, nil)
 	k := &terraform{
 		env:   env,
 		props: properties{},
@@ -62,5 +61,4 @@ func TestTerraformEnabled(t *testing.T) {
 	}
 	terraform := bootStrapTerraformTest(args)
 	assert.True(t, terraform.enabled())
-	assert.Equal(t, expected, terraform.string())
 }