手元の同人整理する

gistfile1.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"runtime"
	"sync"
)

func main() {
	files, err := filepath.Glob("./*.pdf")
	if err != nil {
		fmt.Println(err)
	}

	re := regexp.MustCompile(`^\[(.+?)\]`)
	circleMap := map[string][]string{}
	for _, file := range files {
		if !re.MatchString(file) {
			continue
		}

		circle := re.FindAllStringSubmatch(file, 1)[0][1]
		circles, ok := circleMap[circle]
		if ok {
			circleMap[circle] = append(circles, file)
		} else {
			circleMap[circle] = []string{file}
		}
	}

	var wg sync.WaitGroup
	runtime.GOMAXPROCS(runtime.NumCPU())
	for circle, files := range circleMap {
		wg.Add(1)
		if len(files) == 1 {
			wg.Done()
			continue
		}

		os.Mkdir("./"+circle, 0755)
		for _, file := range files {
			if err := os.Rename("./"+file, "./"+circle+"/"+file); err != nil {
				fmt.Println(err)
			}
		}
		wg.Done()
	}
	wg.Wait()

	fmt.Println("done")
}