git-pre-commit/cmd/go-pre-version/main.go

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"os"
	"os/exec"
	"strconv"
)

func main() {
	b, err := os.ReadFile("version")
	if err != nil {
		file, err := os.OpenFile("version", os.O_RDWR|os.O_CREATE, 0777)
		if err != nil {
			fmt.Println(err)
			return
		}
		defer file.Close()
		file.WriteString("v1.0.0")
		cmd := exec.Command("git", "add", "./version")
		err = cmd.Run()
		if err != nil {
			fmt.Println(err)
		}
		return
	}
	fmt.Println("old version", string(b))
	file, err := os.OpenFile("version", os.O_RDWR|os.O_TRUNC, 0777)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer file.Close()
	bs := bytes.Split(b, []byte{'.'})
	lb := bs[len(bs)-1]
	i, err := strconv.Atoi(string(lb))
	if err != nil {
		fmt.Println(err)
		return
	}
	bs[len(bs)-1] = []byte(fmt.Sprintf("%d", i+1))
	tb := bytes.Join(bs, []byte{'.'})
	fmt.Println("new version", string(tb))
	file.Write(tb)
	cmd := exec.Command("git", "add", "./version")
	err = cmd.Run()
	if err != nil {
		fmt.Println(err)
	}
	winVersionFile := "versioninfo.json"
	_, err = os.Stat(winVersionFile)
	if err != nil {
		return
	}
	winB, err := os.ReadFile(winVersionFile)
	if err != nil {
		fmt.Println("open ", winVersionFile, "error: ", err)
		return
	}
	var winV windowsVersion
	err = json.Unmarshal(winB, &winV)
	if err != nil {
		fmt.Println("invalid format of Windows version info: ", err)
	}
	winV.StringFileInfo.ProductVersion = string(tb)
	file1, _ := os.OpenFile(winVersionFile, os.O_RDWR|os.O_TRUNC, 0777)
	defer file1.Close()
	vb, _ := json.MarshalIndent(winV, "", "    ")
	_, err = file1.Write(vb)
	if err != nil {
		fmt.Println("write new windows version error: ", err)
		return
	}
	cmd2 := exec.Command("git", "add", winVersionFile)
	err = cmd2.Run()
	if err != nil {
		fmt.Println(err)
		return
	}
}

type windowsVersion struct {
	FixedFileInfo struct {
		FileVersion struct {
			Major int
			Minor int
			Patch int
			Build int
		}
		ProductVersion struct {
			Major int
			Minor int
			Patch int
			Build int
		}
		FileFlagsMask string
		FileFlags     string
		FileOS        string
		FileType      string
		FileSubType   string
	}
	StringFileInfo struct {
		Comments         string
		CompanyName      string
		FileDescription  string
		FileVersion      string
		InternalName     string
		LegalCopyright   string
		LegalTrademarks  string
		OriginalFilename string
		PrivateBuild     string
		ProductName      string
		ProductVersion   string
		SpecialBuild     string
	}
	VarFileInfo struct {
		Translation struct {
			LangID    string
			CharsetID string
		}
	}
	IconPath     string
	ManifestPath string
}