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file.go
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file.go
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package toolkit
import (
"io/ioutil"
"os"
"path/filepath"
"github.com/pkg/errors"
)
// ExistFile 判断文件是否存在
func ExistFile(name string) (bool, error) {
_, err := os.Stat(name)
if err == nil {
return true, nil
}
if errors.Is(err, os.ErrNotExist) {
return false, nil
}
return false, err
}
// ExistDir 判断目录是否存在
func ExistDir(name string) (bool, error) {
fileInfo, err := os.Stat(name)
if err != nil {
return false, err
}
return fileInfo.IsDir(), nil
}
// ReadDir 读取目录的内容,分别返回目录,文件的全路径集合
func ReadDir(path string) ([]string, []string, error) {
fileInfos, err := ioutil.ReadDir(path)
if err != nil {
return nil, nil, errors.Wrap(err, "call ReadDir error")
}
files := make([]string, 0, len(fileInfos))
dirs := make([]string, 0, len(fileInfos))
for _, fileInfo := range fileInfos {
fullPath := filepath.Join(path, fileInfo.Name())
if fileInfo.IsDir() {
dirs = append(dirs, fullPath)
} else {
files = append(files, fullPath)
}
}
return dirs, files, nil
}
// FileSizeByPath 通过路径计算文件的大小(Byte单位)
func FileSizeByPath(path string) (int64, error) {
fileInfo, err := os.Stat(path)
if err != nil {
return -1, err
}
return fileInfo.Size(), nil
}
// FileSize 通过打开的文件计算大小(Byte单位)
func FileSize(file *os.File) (int64, error) {
fileInfo, err := file.Stat()
if err != nil {
return -1, err
}
return fileInfo.Size(), nil
}
// Mkdirs 根据路径创建目录
func Mkdirs(path string, perms ...os.FileMode) error {
var perm os.FileMode = 0755
if len(perms) > 0 {
perm = perms[0]
}
return os.MkdirAll(path, perm)
}
// SplitFile 获取文件的目录和文件名
func SplitFile(path string) (string, string, error) {
path, err := filepath.Abs(path)
if err != nil {
return "", "", errors.Wrap(err, "call SplitFile fail, abs filepath error")
}
dir, filename := filepath.Split(path)
return dir, filename, nil
}