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
See also : Golang : Delete files by extension
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+22.3k Golang : Match strings by wildcard patterns with filepath.Match() function
+9.3k Golang : does not implement flag.Value (missing Set method)
+20.6k nginx: [emerg] unknown directive "passenger_enabled"
+7.5k Golang : Accessing dataframe-go element by row, column and name example
+13.6k Facebook PHP getUser() returns 0
+7.7k Golang : Dealing with struct's private part
+11k Golang : Command line file upload program to server example
+22.6k Golang : How to read JPG(JPEG), GIF and PNG files ?
+12.9k Golang : Add ASCII art to command line application launching process
+13.3k Golang : Convert(cast) int to int64
+9k Golang : Gaussian blur on image and camera video feed examples