Simple directory listing with include / exclude pattern support.

find.go

package main

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

func main() {
	var excludePattern, includePattern string
	flag.StringVar(&excludePattern, "excludes", ``, "Exclude pattern (regexp).")
	flag.StringVar(&includePattern, "includes", `.*`, "Include pattern (regexp).")
	flag.Parse()

	excludeRegexp := regexp.MustCompile(excludePattern)
	includeRegexp := regexp.MustCompile(includePattern)

	root := flag.Arg(0)
	err := filepath.Walk(root, func(path string, f os.FileInfo, err error) error {
		if !excludeRegexp.MatchString(path) {
			if includeRegexp.MatchString(path) {
				fmt.Println(path)
			}
		}
		return nil
	})

	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}