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116 lines
2.0 KiB
116 lines
2.0 KiB
package files
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import (
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"bufio"
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"github.com/spf13/afero"
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"io"
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"net/http"
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"os"
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"os/user"
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"path/filepath"
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"strconv"
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"sync"
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)
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func IsSymlink(mode os.FileMode) bool {
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return mode&os.ModeSymlink != 0
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}
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func GetMimeType(path string) string {
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file, err := os.Open(path)
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if err != nil {
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return ""
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}
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defer file.Close()
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buffer := make([]byte, 512)
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_, err = file.Read(buffer)
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if err != nil {
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return ""
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}
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mimeType := http.DetectContentType(buffer)
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return mimeType
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}
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func GetSymlink(path string) string {
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linkPath, err := os.Readlink(path)
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if err != nil {
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return ""
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}
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return linkPath
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}
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func GetUsername(uid uint32) string {
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usr, err := user.LookupId(strconv.Itoa(int(uid)))
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if err != nil {
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return ""
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}
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return usr.Username
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}
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func GetGroup(gid uint32) string {
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usr, err := user.LookupGroupId(strconv.Itoa(int(gid)))
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if err != nil {
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return ""
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}
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return usr.Name
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}
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func ScanDir(fs afero.Fs, path string, dirMap *sync.Map, wg *sync.WaitGroup) {
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afs := &afero.Afero{Fs: fs}
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files, _ := afs.ReadDir(path)
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for _, f := range files {
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if f.IsDir() {
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wg.Add(1)
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go ScanDir(fs, filepath.Join(path, f.Name()), dirMap, wg)
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} else {
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if f.Size() > 0 {
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dirMap.Store(filepath.Join(path, f.Name()), float64(f.Size()))
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}
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}
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}
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defer wg.Done()
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}
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const dotCharacter = 46
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func IsHidden(path string) bool {
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return path[0] == dotCharacter
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}
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func ReadFileByLine(filename string, page, pageSize int) ([]string, bool, error) {
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if !NewFileOp().Stat(filename) {
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return nil, true, nil
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}
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file, err := os.Open(filename)
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if err != nil {
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return nil, false, err
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}
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defer file.Close()
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reader := bufio.NewReaderSize(file, 8192)
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var lines []string
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currentLine := 0
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startLine := (page - 1) * pageSize
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endLine := startLine + pageSize
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for {
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line, _, err := reader.ReadLine()
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if err == io.EOF {
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break
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}
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if currentLine >= startLine && currentLine < endLine {
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lines = append(lines, string(line))
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}
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currentLine++
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if currentLine >= endLine {
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break
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}
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}
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isEndOfFile := currentLine < endLine
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return lines, isEndOfFile, nil
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}
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