refactor: add built-in install

src/go.mod

@@ -35,7 +35,6 @@ require (
 	github.com/goccy/go-yaml v1.11.3
 	github.com/gookit/goutil v0.6.15
 	github.com/hashicorp/hcl/v2 v2.21.0
-	github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf
 	github.com/mattn/go-runewidth v0.0.15
 	github.com/pelletier/go-toml/v2 v2.2.2
 	github.com/spf13/cobra v1.8.1

src/go.sum

@@ -86,8 +86,6 @@ github.com/huandu/xstrings v1.5.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq
 github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/imdario/mergo v0.3.16 h1:wwQJbIsHYGMUyLSPrEq1CT16AhnhNJQ51+4fdHUnCl4=
 github.com/imdario/mergo v0.3.16/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
-github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf h1:WfD7VjIE6z8dIvMsI4/s+1qr5EL+zoIGev1BQj1eoJ8=
-github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf/go.mod h1:hyb9oH7vZsitZCiBt0ZvifOrB+qc8PS5IiilCIb87rg=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jandedobbeleer/clipboard v0.1.4-1 h1:rJehm5W0a3hvjcxyB3snqLBV4yvMBBc12JyMP7ngNQw=

src/upgrade/install.go

@@ -1,11 +1,13 @@
 package upgrade
 
 import (
+	"bytes"
 	"fmt"
+	"io"
 	"os"
+	"path/filepath"
 	"runtime"
 
-	"github.com/inconshreveable/go-update"
 	"github.com/jandedobbeleer/oh-my-posh/src/platform"
 )
 
@@ -33,7 +35,57 @@ func install() error {
 
 	defer data.Close()
 
-	return update.Apply(data, update.Options{
-		TargetPath: executable,
-	})
+	newBytes, err := io.ReadAll(data)
+	if err != nil {
+		return err
+	}
+
+	targetDir := filepath.Dir(executable)
+	fileName := filepath.Base(executable)
+
+	newPath := filepath.Join(targetDir, fmt.Sprintf(".%s.new", fileName))
+	fp, err := os.OpenFile(newPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0775)
+	if err != nil {
+		return err
+	}
+
+	defer fp.Close()
+
+	_, err = io.Copy(fp, bytes.NewReader(newBytes))
+	if err != nil {
+		return err
+	}
+
+	// windows will have a lock when we do not close the file
+	fp.Close()
+
+	oldPath := filepath.Join(targetDir, fmt.Sprintf(".%s.old", fileName))
+
+	_ = os.Remove(oldPath)
+
+	err = os.Rename(executable, oldPath)
+	if err != nil {
+		return err
+	}
+
+	err = os.Rename(newPath, executable)
+
+	if err != nil {
+		// rollback
+		rerr := os.Rename(oldPath, executable)
+		if rerr != nil {
+			return rerr
+		}
+
+		return err
+	}
+
+	removeErr := os.Remove(oldPath)
+
+	// hide the old executable if we can't remove it
+	if removeErr != nil {
+		_ = hideFile(oldPath)
+	}
+
+	return nil
 }

src/upgrade/install_noop.go

@@ -0,0 +1,7 @@
+//go:build !windows
+
+package upgrade
+
+func hideFile(_ string) error {
+	return nil
+}

src/upgrade/install_windows.go

@@ -0,0 +1,24 @@
+package upgrade
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func hideFile(path string) error {
+	kernel32 := syscall.NewLazyDLL("kernel32.dll")
+	setFileAttributes := kernel32.NewProc("SetFileAttributesW")
+
+	ptr, err := syscall.UTF16PtrFromString(path)
+	if err != nil {
+		return err
+	}
+
+	r1, _, err := setFileAttributes.Call(uintptr(unsafe.Pointer(ptr)), 2)
+
+	if r1 == 0 {
+		return err
+	}
+
+	return nil
+}