addSpace2Sharp.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"regexp"
	"strings"
)

var listFile []string

func main() {
	filepath.Walk(".", listFun)
	//	readLine("/Users/lizhuohuang/Workspace/b.md")
	for _, name := range listFile {
		addSpace2Sharp(name)
	}
}
func addSpace2Sharp(filename string) {
	modify := false
	fmt.Println(filename)
	tmpname := filename + ".tmp"
	inFile, err := os.Open(filename)
	fmt.Println("open:", err)
	defer inFile.Close()
	//	reader := bufio.NewReader(inFile)
	outfile, _ := os.Create(tmpname)
	writer := bufio.NewWriter(outfile)
	scanner := bufio.NewScanner(inFile)
	scanner.Split(bufio.ScanLines)
	reg := regexp.MustCompile(`^[#]{1,4}`)
	for scanner.Scan() {
		if len(reg.FindAllString(scanner.Text(), -1)) != 0 {
			src := reg.FindString(scanner.Text())
			modify = true
			writer.WriteString(reg.ReplaceAllString(scanner.Text(), src+" "))
			fmt.Println(src)
		} else {
			writer.WriteString(scanner.Text() + "\n")
		}
	}
	if modify {
		writer.Flush()
		exec.Command("rm", filename).Run()
		exec.Command("mv", tmpname, filename).Run()
	} else {
		exec.Command("rm", tmpname).Run()
	}
}

func listFun(path string, f os.FileInfo, err error) error {
	strRet, _ := os.Getwd()
	strRet += "/" + path
	if strings.HasSuffix(strRet, ".md") {
		listFile = append(listFile, strRet)
	}
	return nil
}