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file.go
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file.go
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package xutil
import (
"bufio"
"crypto/md5"
"crypto/sha1"
"encoding/csv"
"errors"
"hash"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
"time"
"github.com/pkg/sftp"
"golang.org/x/crypto/ssh"
)
//FileLinesCount 文件行数计算
func FileLinesCount(filename string, delim byte) int {
count := 0
file, err := os.Open(filename)
if err != nil {
return count
}
defer file.Close()
reader := bufio.NewReader(file)
line := []byte{}
for {
line, err = reader.ReadBytes(delim)
if err != nil {
break
}
count++
}
if len(line) > 0 {
count++
}
return count
}
//FilePatternLinesCount 匹配文件行数计算
func FilePatternLinesCount(fexp string, delim byte) (count int, detail map[string]int) {
detail = make(map[string]int, 0)
files, err := filepath.Glob(fexp)
if err != nil {
return count, nil
}
for _, fname := range files {
n := FileLinesCount(fname, delim)
detail[fname] = n
count = count + n
}
return count, detail
}
//IsFileExist 文件是否存在
func IsFilesExist(paths []string) (err error) {
s := []string{}
for _, fname := range paths {
fi, err := os.Stat(fname)
if err == nil && !fi.IsDir() {
continue
} else {
s = append(s, fname)
}
}
if len(s) == 0 {
return nil
}
return errors.New(strings.Join(s, ",") + " HasError")
}
//IsDirsExist 文件夹是否存在
func IsDirsExist(paths []string, isCreate bool) (err error) {
s := []string{}
for _, fname := range paths {
fi, err := os.Stat(fname)
if err == nil && fi.IsDir() {
continue
}
if isCreate {
err = os.MkdirAll(fname, os.ModePerm)
if err != nil {
s = append(s, fname)
}
} else {
s = append(s, fname)
}
}
if len(s) == 0 {
return nil
}
return errors.New(strings.Join(s, ",") + " HasError")
}
// CsvWriteALL 生成CSV
func CsvWriteALL(data [][]string, wfile string, comma rune) error {
wf, err := os.Create(wfile)
if err != nil {
return err
}
defer wf.Close()
wcsv := csv.NewWriter(wf)
wcsv.Comma = comma
wcsv.WriteAll(data)
wcsv.Flush()
return nil
}
// CsvWriteALL 生成CSV
func CsvWriteFile(data [][]string, wfile string, comma string) error {
file, err := os.Create(wfile)
if err != nil {
return err
}
bb := bufio.NewWriter(file)
for v := range data {
bb.WriteString(strings.Join(data[v], comma))
bb.WriteRune('\n')
}
bb.Flush()
file.Close()
return nil
}
//--------------------------------------------------------------------------------------------------------------------
type SSftp struct {
Ssh *ssh.Client
Sftp *sftp.Client
}
func NewSSftp(user, passwd, hostport string) (s SSftp, err error) {
config := ssh.ClientConfig{
User: user,
Auth: []ssh.AuthMethod{ssh.Password(passwd)},
Timeout: 30 * time.Second,
HostKeyCallback: ssh.InsecureIgnoreHostKey()}
conn, err := ssh.Dial("tcp", hostport, &config)
if err != nil {
return s, err
}
c, err := sftp.NewClient(conn)
if err != nil {
conn.Close()
return s, err
}
s.Ssh = conn
s.Sftp = c
return s, nil
}
func (s SSftp) Put(scpfiles [][2]string) error {
for _, v := range scpfiles {
srcFile, err := os.Open(v[0])
if err != nil {
return err
}
dstFile, err := s.Sftp.Create(v[1])
if err != nil {
return err
}
buf := make([]byte, 1024)
_, err = io.CopyBuffer(dstFile, srcFile, buf)
srcFile.Close()
dstFile.Close()
}
return nil
}
func (s SSftp) Get(scpfiles [][2]string) error {
for _, v := range scpfiles {
srcFile, err := s.Sftp.Open(v[0])
if err != nil {
return err
}
dstFile, err := os.Create(v[1])
if err != nil {
return err
}
_, err = srcFile.WriteTo(dstFile)
if err != nil {
return err
}
srcFile.Close()
dstFile.Close()
}
return nil
}
func (s SSftp) Close() error {
err := s.Sftp.Close()
if err != nil {
return err
}
err = s.Ssh.Close()
return err
}
//---------------------------------------------------------------------
func FileSize(fname string) int64 {
file, err := os.Stat(fname)
//if file can't be found create an err message and close program
if os.IsNotExist(err) {
log.Fatal("File does not exsist at: ", fname)
}
//if any filesystem error occurs close the program with err details
if err != nil {
log.Fatal(err)
}
// get and return the size of the file
return file.Size()
}
// FileHash Hash
func FileHash(htype string, fname string) ([]byte, error) {
file, err := os.Open(fname)
if err != nil {
return nil, err
}
defer file.Close()
var h hash.Hash
switch htype {
case "SHA1":
h = sha1.New()
case "MD5":
h = md5.New()
default:
h = md5.New()
}
if _, err := io.Copy(h, file); err != nil {
return nil, err
}
return h.Sum(nil), nil
}
// FileSHA1 SHA1
func FileSHA1(fname string) ([]byte, error) {
return FileHash("SHA1", fname)
}
// FileMD5 MD5
func FileMD5(fname string) ([]byte, error) {
return FileHash("MD5", fname)
}
// FileCopy 文件/文件夹/链接复制
func FileCopy(src, dest string) error {
info, err := os.Lstat(src)
if err != nil {
return err
}
return _copy(src, dest, info)
}
func _copy(src, dest string, info os.FileInfo) error {
if info.Mode()&os.ModeSymlink != 0 {
return linkcopy(src, dest, info)
}
if info.IsDir() {
return dircopy(src, dest, info)
}
return filecopy(src, dest, info)
}
func filecopy(src, dest string, info os.FileInfo) error {
if err := os.MkdirAll(filepath.Dir(dest), os.ModePerm); err != nil {
return err
}
f, err := os.Create(dest)
if err != nil {
return err
}
defer f.Close()
if err = os.Chmod(f.Name(), info.Mode()); err != nil {
return err
}
s, err := os.Open(src)
if err != nil {
return err
}
defer s.Close()
_, err = io.Copy(f, s)
return err
}
func dircopy(srcdir, destdir string, info os.FileInfo) error {
originalMode := info.Mode()
if err := os.MkdirAll(destdir, 0755); err != nil {
return err
}
// Recover dir mode with original one.
defer os.Chmod(destdir, originalMode)
contents, err := ioutil.ReadDir(srcdir)
if err != nil {
return err
}
for _, content := range contents {
cs, cd := filepath.Join(srcdir, content.Name()), filepath.Join(destdir, content.Name())
if err := _copy(cs, cd, content); err != nil {
// If any error, exit immediately
return err
}
}
return nil
}
func linkcopy(src, dest string, info os.FileInfo) error {
src, err := os.Readlink(src)
if err != nil {
return err
}
return os.Symlink(src, dest)
}
//---------------------------------------------------------------------