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file.go
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file.go
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package main
import (
"crypto/sha1"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
)
func walk(path string, recursive bool, filter func(string) bool) []string {
if recursive {
return walkRecursiveImp(path, filter)
}
return walkImp(path, filter)
}
func walkImp(path string, filter func(string) bool) []string {
files, err := ioutil.ReadDir(path)
if err != nil {
log.Println(err)
return nil
}
result := []string{}
for _, info := range files {
if info.IsDir() == false && filter(info.Name()) {
result = append(result, path+"/"+info.Name())
}
}
return result
}
func walkRecursiveImp(path string, filter func(string) bool) []string {
files := []string{}
err := filepath.Walk(path,
func(fullpath string, info os.FileInfo, err error) error {
if err != nil {
log.Println(err)
return err
}
fmt.Println(fullpath, info.Size())
if info.IsDir() == false && filter(info.Name()) {
files = append(files, fullpath+"/"+info.Name())
}
return nil
})
if err != nil {
log.Println(err)
}
return files
}
func sha1sum(filePath string) string {
file, err := os.Open(filePath)
if err != nil {
log.Println(err)
return ""
}
defer file.Close()
hash := sha1.New()
if _, err := io.Copy(hash, file); err != nil {
log.Println(err)
return ""
}
hexDigest := hash.Sum(nil)
return hex.EncodeToString(hexDigest)
}