chore: migrate to gitea

vendor/cloud.google.com/go/auth/internal/credsfile/credsfile.go

@@ -0,0 +1,63 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package credsfile is meant to hide implementation details from the pubic
+// surface of the detect package. It should not import any other packages in
+// this module. It is located under the main internal package so other
+// sub-packages can use these parsed types as well.
+package credsfile
+
+import (
+	"os"
+	"os/user"
+	"path/filepath"
+	"runtime"
+)
+
+const (
+	// GoogleAppCredsEnvVar is the environment variable for setting the
+	// application default credentials.
+	GoogleAppCredsEnvVar = "GOOGLE_APPLICATION_CREDENTIALS"
+	userCredsFilename    = "application_default_credentials.json"
+)
+
+// GetFileNameFromEnv returns the override if provided or detects a filename
+// from the environment.
+func GetFileNameFromEnv(override string) string {
+	if override != "" {
+		return override
+	}
+	return os.Getenv(GoogleAppCredsEnvVar)
+}
+
+// GetWellKnownFileName tries to locate the filepath for the user credential
+// file based on the environment.
+func GetWellKnownFileName() string {
+	if runtime.GOOS == "windows" {
+		return filepath.Join(os.Getenv("APPDATA"), "gcloud", userCredsFilename)
+	}
+	return filepath.Join(guessUnixHomeDir(), ".config", "gcloud", userCredsFilename)
+}
+
+// guessUnixHomeDir default to checking for HOME, but not all unix systems have
+// this set, do have a fallback.
+func guessUnixHomeDir() string {
+	if v := os.Getenv("HOME"); v != "" {
+		return v
+	}
+	if u, err := user.Current(); err == nil {
+		return u.HomeDir
+	}
+	return ""
+}