Files
kjol/tools/tsgo/internal/repo/paths.go
2026-07-09 16:50:43 -04:00

88 lines
1.8 KiB
Go

package repo
import (
"os"
"path/filepath"
"runtime"
"strings"
"sync"
)
var rootPath = sync.OnceValue(func() string {
_, filename, _, ok := runtime.Caller(0)
if !ok {
panic("could not get current filename")
}
filename = filepath.FromSlash(filename) // runtime.Caller always returns forward slashes; https://go.dev/issues/3335, https://go.dev/cl/603275
if strings.HasPrefix(filename, "github.com/") {
panic("repo root cannot be found when built with -trimpath")
}
if !filepath.IsAbs(filename) {
panic(filename + " is not an absolute path")
}
root := filepath.VolumeName(filename) + string(filepath.Separator)
dir := filepath.Dir(filename)
for {
if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
return dir
}
if dir == root {
break
}
dir = filepath.Dir(dir)
}
panic("could not find go.mod above " + filename)
})
func RootPath() string {
return rootPath()
}
var typeScriptSubmodulePath = sync.OnceValue(func() string {
return filepath.Join(rootPath(), "_submodules", "TypeScript")
})
func TypeScriptSubmodulePath() string {
return typeScriptSubmodulePath()
}
var testDataPath = sync.OnceValue(func() string {
return filepath.Join(rootPath(), "testdata")
})
func TestDataPath() string {
return testDataPath()
}
var typeScriptSubmoduleExists = sync.OnceValue(func() bool {
p := filepath.Join(typeScriptSubmodulePath(), "package.json")
if _, err := os.Stat(p); err != nil {
if os.IsNotExist(err) {
return false
}
panic(err)
}
return true
})
func TypeScriptSubmoduleExists() bool {
return typeScriptSubmoduleExists()
}
type SkippableTest interface {
Helper()
Skipf(format string, args ...any)
}
func SkipIfNoTypeScriptSubmodule(t SkippableTest) {
t.Helper()
if !typeScriptSubmoduleExists() {
t.Skipf("TypeScript submodule does not exist")
}
}