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forked from warrensbox/terraform-switcher
/
files.go
225 lines (187 loc) · 4.27 KB
/
files.go
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package lib
import (
"archive/zip"
"bufio"
"bytes"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
)
// RenameFile : rename file name
func RenameFile(src string, dest string) {
err := os.Rename(src, dest)
if err != nil {
fmt.Println(err)
return
}
}
// RemoveFiles : remove file
func RemoveFiles(src string) {
files, err := filepath.Glob(src)
if err != nil {
panic(err)
}
for _, f := range files {
if err := os.Remove(f); err != nil {
panic(err)
}
}
}
// CheckFileExist : check if file exist in directory
func CheckFileExist(file string) bool {
_, err := os.Stat(file)
if err != nil {
return false
}
return true
}
// Unzip will decompress a zip archive, moving all files and folders
// within the zip file (parameter 1) to an output directory (parameter 2).
func Unzip(src string, dest string) ([]string, error) {
var filenames []string
r, err := zip.OpenReader(src)
if err != nil {
return filenames, err
}
defer r.Close()
for _, f := range r.File {
rc, err := f.Open()
if err != nil {
return filenames, err
}
defer rc.Close()
// Store filename/path for returning and using later on
fpath := filepath.Join(dest, f.Name)
filenames = append(filenames, fpath)
if f.FileInfo().IsDir() {
// Make Folder
os.MkdirAll(fpath, os.ModePerm)
} else {
// Make File
if err = os.MkdirAll(filepath.Dir(fpath), os.ModePerm); err != nil {
return filenames, err
}
outFile, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
if err != nil {
return filenames, err
}
_, err = io.Copy(outFile, rc)
// Close the file without defer to close before next iteration of loop
outFile.Close()
if err != nil {
return filenames, err
}
}
}
return filenames, nil
}
//CreateDirIfNotExist : create directory if directory does not exist
func CreateDirIfNotExist(dir string) {
if _, err := os.Stat(dir); os.IsNotExist(err) {
log.Printf("Creating directory for terraform: %v", dir)
err = os.MkdirAll(dir, 0755)
if err != nil {
fmt.Printf("Unable to create directory for terraform: %v", dir)
panic(err)
}
}
}
//WriteLines : writes into file
func WriteLines(lines []string, path string) (err error) {
var (
file *os.File
)
if file, err = os.Create(path); err != nil {
return err
}
defer file.Close()
for _, item := range lines {
_, err := file.WriteString(strings.TrimSpace(item) + "\n")
if err != nil {
fmt.Println(err)
break
}
}
return nil
}
// ReadLines : Read a whole file into the memory and store it as array of lines
func ReadLines(path string) (lines []string, err error) {
var (
file *os.File
part []byte
prefix bool
)
if file, err = os.Open(path); err != nil {
return
}
defer file.Close()
reader := bufio.NewReader(file)
buffer := bytes.NewBuffer(make([]byte, 0))
for {
if part, prefix, err = reader.ReadLine(); err != nil {
break
}
buffer.Write(part)
if !prefix {
lines = append(lines, buffer.String())
buffer.Reset()
}
}
if err == io.EOF {
err = nil
}
return
}
//IsDirEmpty : check if directory is empty (TODO UNIT TEST)
func IsDirEmpty(name string) bool {
exist := false
f, err := os.Open(name)
if err != nil {
log.Fatal(err)
}
defer f.Close()
_, err = f.Readdirnames(1) // Or f.Readdir(1)
if err == io.EOF {
exist = true
}
return exist // Either not empty or error, suits both cases
}
//CheckDirHasTGBin : // check binary exist (TODO UNIT TEST)
func CheckDirHasTGBin(dir, prefix string) bool {
exist := false
files, err := ioutil.ReadDir(dir)
if err != nil {
log.Fatal(err)
//return exist, err
}
res := []string{}
for _, f := range files {
if !f.IsDir() && strings.HasPrefix(f.Name(), prefix) {
res = append(res, filepath.Join(dir, f.Name()))
exist = true
}
}
return exist
}
//CheckDirExist : check if directory exist
//dir=path to file
//return path to directory
func CheckDirExist(dir string) bool {
if _, err := os.Stat(dir); os.IsNotExist(err) {
return false
}
return true
}
// Path : returns path of directory
// value=path to file
func Path(value string) string {
return filepath.Dir(value)
}
// GetFileName : remove file ext. .tfswitch.config returns .tfswitch
func GetFileName(configfile string) string {
return strings.TrimSuffix(configfile, filepath.Ext(configfile))
}