Golang : Find files by extension

This is a filepath.Ext() function example and it will only display files with .png extension in the current directory. You can adapt the code for other purposes.

findfilesbyextension.go

 package main

  import (
 "fmt"
 "os"
 "path/filepath"
  )

  func main() {

 dirname := "." + string(filepath.Separator)

 d, err := os.Open(dirname)
 if err != nil {
 fmt.Println(err)
 os.Exit(1)
 }
 defer d.Close()

 files, err := d.Readdir(-1)
 if err != nil {
 fmt.Println(err)
 os.Exit(1)
 }

 fmt.Println("Reading "+ dirname)

 for _, file := range files {
 if file.Mode().IsRegular() {
 if filepath.Ext(file.Name()) == ".png" {
 fmt.Println(file.Name())
 }
 }
 }
  }

Put couple of .png files into the same directory as this go program and try it out.

Reference :

http://stackoverflow.com/questions/20115327/golang-rename-the-directory-and-partial-file-renaming

http://golang.org/pkg/os/#File

Golang : Read directory content with os.Open