/
path_utils.go
59 lines (53 loc) · 1.59 KB
/
path_utils.go
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// Copyright 2019 Google Inc. All Rights Reserved.
//
// 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 path
import (
"math/rand"
"net/url"
"path"
"path/filepath"
"strings"
"time"
)
// RandString generates a random string of n length.
func RandString(n int) string {
gen := rand.New(rand.NewSource(time.Now().UnixNano()))
letters := "bdghjlmnpqrstvwxyz0123456789"
b := make([]byte, n)
for i := range b {
b[i] = letters[gen.Int63()%int64(len(letters))]
}
return string(b)
}
// JoinURL extends URL with additional path
func JoinURL(urlStr string, pathStr string) string {
u, _ := url.Parse(urlStr)
u.Path = path.Join(u.Path, pathStr)
return u.String()
}
// ToDirectoryURL ensures url ends with a /
func ToDirectoryURL(url string) string {
if !strings.HasSuffix(url, "/") {
return url + "/"
}
return url
}
// ToWorkingDir gets absolute path from given relative path of the directory
func ToWorkingDir(relDir string, currentExecutablePath string) string {
wd, err := filepath.Abs(filepath.Dir(currentExecutablePath))
if err == nil {
return path.Join(wd, relDir)
}
return relDir
}