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package parser
import (
"fmt"
"os"
"path"
"path/filepath"
"strings"
)
func normalizePath(path string) string {
// use lower case, as Windows file systems will almost always be case insensitive
return strings.ToLower(strings.Replace(path, "\\", "/", -1))
}
func getPkgPath(fname string, isDir bool) (string, error) {
// path.IsAbs doesn't work properly on Windows; use filepath.IsAbs instead
if !filepath.IsAbs(fname) {
pwd, err := os.Getwd()
if err != nil {
return "", err
}
fname = path.Join(pwd, fname)
}
fname = normalizePath(fname)
gopath := os.Getenv("GOPATH")
if gopath == "" {
var err error
gopath, err = getDefaultGoPath()
if err != nil {
return "", fmt.Errorf("cannot determine GOPATH: %s", err)
}
}
for _, p := range strings.Split(os.Getenv("GOPATH"), ";") {
prefix := path.Join(normalizePath(p), "src") + "/"
if rel := strings.TrimPrefix(fname, prefix); rel != fname {
if !isDir {
return path.Dir(rel), nil
} else {
return path.Clean(rel), nil
}
}
}
return "", fmt.Errorf("file '%v' is not in GOPATH", fname)
}
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