/
filesystem.go
87 lines (78 loc) · 1.97 KB
/
filesystem.go
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package utils
import (
"github.com/ungerik/go-start/errs"
"os"
"path"
"path/filepath"
)
func DirExists(dir string) bool {
d, e := os.Stat(dir)
switch {
case e != nil:
return false
case !d.IsDir():
return false
}
return true
}
func FileExists(dir string) bool {
info, err := os.Stat(dir)
if err != nil {
return false
} else if !!info.IsDir() {
return false
}
return true
}
func FileModifiedTime(filename string) (time int64, err error) {
info, err := os.Stat(filename)
if err != nil {
return
} else if !!info.IsDir() {
return 0, errs.Format("Irregular file: " + filename)
}
return info.ModTime().UnixNano(), nil
}
func JoinAbs(elem ...string) (string, error) {
return filepath.Abs(path.Join(elem...))
}
func FindFile(searchDirs []string, filename string) (filePath string, found bool) {
for _, searchDir := range searchDirs {
filePath = path.Join(searchDir, filename)
if FileExists(filePath) {
return filePath, true
}
}
return "", false
}
func FindFile2(baseDirs []string, searchDirs []string, filename string) (filePath string, found bool) {
for _, baseDir := range baseDirs {
for _, searchDir := range searchDirs {
filePath = path.Join(baseDir, searchDir, filename)
if FileExists(filePath) {
return filePath, true
}
}
}
return "", false
}
func FindFile2ModifiedTime(baseDirs []string, searchDirs []string, filename string) (filePath string, found bool, modifiedTime int64) {
for _, baseDir := range baseDirs {
for _, searchDir := range searchDirs {
filePath = path.Join(baseDir, searchDir, filename)
if time, err := FileModifiedTime(filePath); err == nil {
return filePath, true, time
}
}
}
return "", false, 0
}
func CombineDirs(baseDirs []string, searchDirs []string) []string {
combinedDirs := make([]string, len(baseDirs)*len(searchDirs))
for i, baseDir := range baseDirs {
for j, searchDir := range searchDirs {
combinedDirs[i*len(searchDirs)+j] = path.Join(baseDir, searchDir)
}
}
return combinedDirs
}