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dir.go
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dir.go
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// Copyright (c) 2023, Intel Corporation.
// SPDX-License-Identifier: BSD-3-Clause
package config
import (
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"github.com/intel/ixl-go/internal/log"
)
var devDirName = regexp.MustCompile(`^\S+?(\d+)(\.\d+)?$`)
func getIdsFromName(name string) (numbers []int) {
match := devDirName.FindStringSubmatch(name)
if match == nil {
return numbers
}
var n0, n1 int
n0, _ = strconv.Atoi(match[1])
if match[2] != "" {
n1, _ = strconv.Atoi(match[2][1:])
}
return []int{n0, n1}
}
func devDirs(path string, prefix string, fn func(ids []int, path string)) error {
dir, err := os.ReadDir(path)
if err != nil {
return err
}
for _, de := range dir {
if !strings.HasPrefix(de.Name(), prefix) {
continue
}
path := filepath.Join(path, de.Name())
isdir, err := isDir(path, de)
if err != nil {
log.Debug("warn:", err)
continue
}
if !isdir {
log.Debug(de.Name(), "is not a dir")
continue
}
if strings.Contains(de.Name(), "!") {
continue
}
ids := getIdsFromName(de.Name())
if len(ids) == 0 {
log.Debug(de.Name())
continue
}
fn(ids, path)
}
return nil
}
func isDir(path string, e os.DirEntry) (bool, error) {
if e.IsDir() {
return true, nil
}
mod := e.Type()
if mod&os.ModeSymlink == os.ModeSymlink {
rPath, err := filepath.EvalSymlinks(path)
if err != nil {
return false, err
}
fi, err := os.Stat(rPath)
if err != nil {
return false, err
}
return fi.IsDir(), nil
}
return false, nil
}