Fix stdlib detection when goroot and gopath share the same prefix (#148)

jingyuanliang · web-flow · commit cac23d2ab9f0 · 2022-09-14T13:04:43.000+08:00
This fixes #38.
diff --git a/licenses/library.go b/licenses/library.go
@@ -286,5 +286,10 @@ func isStdLib(pkg *packages.Package) bool {
 	if len(pkg.GoFiles) == 0 {
 		return false
 	}
-	return strings.HasPrefix(pkg.GoFiles[0], build.Default.GOROOT)
+	prefix := build.Default.GOROOT
+	sep := string(filepath.Separator)
+	if !strings.HasSuffix(prefix, sep) {
+		prefix += sep
+	}
+	return strings.HasPrefix(pkg.GoFiles[0], prefix)
 }

Original file line number	Diff line number	Diff line change
`@@ -286,5 +286,10 @@ func isStdLib(pkg *packages.Package) bool {`
`286`	`286`	`if len(pkg.GoFiles) == 0 {`
`287`	`287`	`return false`
`288`	`288`	`}`
`289`		`- return strings.HasPrefix(pkg.GoFiles[0], build.Default.GOROOT)`
	`289`	`+ prefix := build.Default.GOROOT`
	`290`	`+ sep := string(filepath.Separator)`
	`291`	`+ if !strings.HasSuffix(prefix, sep) {`
	`292`	`+ prefix += sep`
	`293`	`+ }`
	`294`	`+ return strings.HasPrefix(pkg.GoFiles[0], prefix)`
`290`	`295`	`}`