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file.go
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file.go
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package rice
import (
"os"
"path/filepath"
)
// PathExists 路径是否存在
func PathExists(path string) bool {
_, err := os.Stat(path)
if err != nil {
return os.IsExist(err)
}
return true
}
// PathIsDir 路径是否是文件夹
func PathIsDir(path string) bool {
s, err := os.Stat(path)
if err != nil {
return false
}
return s.IsDir()
}
// PathIsFile 路径是否是文件
func PathIsFile(path string) bool {
return !PathIsDir(path)
}
// FileExists 文件是否存在
func FileExists(filename string) bool {
info, err := os.Stat(filename)
if os.IsNotExist(err) {
return false
}
return !info.IsDir()
}
func WriteFileIfNotExists(name string, data []byte) error {
if FileExists(name) {
return nil
}
dir := filepath.Dir(name)
if !PathExists(dir) {
if err := os.MkdirAll(dir, 0644); err != nil {
return err
}
}
return os.WriteFile(name, data, 0644)
}
func AppendFileIfExists(name string, data []byte) error {
if FileExists(name) {
f, err := os.OpenFile(name, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return err
}
_, err = f.Write(data)
if err1 := f.Close(); err1 != nil && err == nil {
err = err1
}
return err
}
dir := filepath.Dir(name)
if !PathExists(dir) {
if err := os.MkdirAll(dir, 0644); err != nil {
return err
}
}
return os.WriteFile(name, data, 0644)
}
func WriteFileWhatever(name string, data []byte) error {
dir := filepath.Dir(name)
if !PathExists(dir) {
if err := os.MkdirAll(dir, 0644); err != nil {
return err
}
}
return os.WriteFile(name, data, 0644)
}