feat: new ShowDebug parameter

calculate each segment timing
new parameter to show/hide segment debug information
set-poshprompt updated with the new showDebug parameter

Force disabled segment to be visible for debug purpose

engine.go

@@ -67,6 +67,9 @@ func (e *engine) renderText(text string) {
 	prefix := e.activeSegment.getValue(Prefix, " ")
 	postfix := e.activeSegment.getValue(Postfix, " ")
 	e.renderer.write(e.activeSegment.Background, e.activeSegment.Foreground, fmt.Sprintf("%s%s%s", prefix, text, postfix))
+	if *e.env.getArgs().Debug {
+		e.renderer.write(e.activeSegment.Background, e.activeSegment.Foreground, fmt.Sprintf("(%s:%s)", e.activeSegment.Type, e.activeSegment.timing))
+	}
 }
 
 func (e *engine) renderSegmentText(text string) {
@@ -107,13 +110,11 @@ func (e *engine) setStringValues(segments []*Segment) {
 	wg.Add(len(segments))
 	defer wg.Wait()
 	cwd := e.env.getcwd()
+	debug := *e.env.getArgs().Debug
 	for _, segment := range segments {
 		go func(s *Segment) {
 			defer wg.Done()
-			err := s.mapSegmentWithWriter(e.env)
+			s.setStringValue(e.env, cwd, debug)
-			if err == nil && !s.hasValue(IgnoreFolders, cwd) && s.enabled() {
-				s.stringValue = s.string()
-			}
 		}(segment)
 	}
 }

main.go

@@ -14,6 +14,7 @@ type args struct {
 	Config      *string
 	Shell       *string
 	PWD         *string
+	Debug       *bool
 }
 
 func main() {
@@ -42,6 +43,10 @@ func main() {
 			"pwd",
 			"",
 			"the path you are working in"),
+		Debug: flag.Bool(
+			"debug",
+			false,
+			"Print debug information"),
 	}
 	flag.Parse()
 	env := &environment{

packages/powershell/oh-my-posh/oh-my-posh.psm1

@@ -5,6 +5,7 @@
 
 $global:PoshSettings = New-Object -TypeName PSObject -Property @{
     Theme = "$PSScriptRoot\themes\jandedobbeleer.json";
+    ShowDebug = $false
 }
 
 function Get-PoshCommand {
@@ -36,9 +37,14 @@ function Set-PoshPrompt {
     param(
         [Parameter(Mandatory = $false)]
         [string]
-        $Theme
+        $Theme,
+        [Parameter(Mandatory = $false)]
+        [bool]
+        $ShowDebug = $false
     )
 
+    $global:PoshSettings.ShowDebug = $ShowDebug
+
     if (Test-Path "$PSScriptRoot/themes/$Theme.json") {
         $global:PoshSettings.Theme = "$PSScriptRoot/themes/$Theme.json"
     }
@@ -68,8 +74,9 @@ function Set-PoshPrompt {
         $startInfo = New-Object System.Diagnostics.ProcessStartInfo
         $startInfo.FileName = Get-PoshCommand
         $config = $global:PoshSettings.Theme
+        $showDebug = $global:PoshSettings.ShowDebug
         $cleanPWD = $PWD.ProviderPath.TrimEnd("\")
-        $startInfo.Arguments = "-config=""$config"" -error=$errorCode -pwd=""$cleanPWD"""
+        $startInfo.Arguments = "-debug=""$showDebug"" -config=""$config"" -error=$errorCode -pwd=""$cleanPWD"""
         $startInfo.Environment["TERM"] = "xterm-256color"
         $startInfo.CreateNoWindow = $true
         $startInfo.StandardOutputEncoding = [System.Text.Encoding]::UTF8

segment.go

@@ -1,6 +1,9 @@
 package main
 
-import "errors"
+import (
+	"errors"
+	"time"
+)
 
 // Segment represent a single segment and it's configuration
 type Segment struct {
@@ -17,6 +20,7 @@ type Segment struct {
 	writer          SegmentWriter
 	stringValue     string
 	active          bool
+	timing          time.Duration
 }
 
 // SegmentWriter is the interface used to define what and if to write to the prompt
@@ -149,3 +153,26 @@ func (segment *Segment) mapSegmentWithWriter(env environmentInfo) error {
 	}
 	return errors.New("unable to map writer")
 }
+
+func (segment *Segment) setStringValue(env environmentInfo, cwd string, debug bool) {
+	err := segment.mapSegmentWithWriter(env)
+	if err != nil || segment.hasValue(IgnoreFolders, cwd) {
+		return
+	}
+	// add timing only in debug
+	if debug {
+		start := time.Now()
+		defer (func() {
+			// force segment rendering to display the time it took
+			// to check if the segment is enabled or not
+			// depending on the segement, calling enabled()
+			// can be time consuming
+			segment.active = true
+			elapsed := time.Since(start)
+			segment.timing = elapsed
+		})()
+	}
+	if segment.enabled() {
+		segment.stringValue = segment.string()
+	}
+}