Build dem jars

jarbuilder.go

package main

import (
	"archive/zip"
	"fmt"
	"io"
	"os"
	"path"
)

const archiveName = "FurlMod"

func main() {
	// Called after reobfuscate
	// mcp = .
	// jar path = reobf/minecraft/* + src/minecraft/mcmod.info + lol assets
	files := make(map[string]*os.File)

	reobf, err := os.Stat("reobf/minecraft")
	if err != nil {
		panic(err)
	}

	if !reobf.IsDir() {
		panic("reobf folder not found")
	}
	mcmod, err := os.Open("src/minecraft/mcmod.info")
	if err != nil {
		panic(err)
	}

	files["mcmod.info"] = mcmod

	var traverse func(fi os.FileInfo, dirPath, zipPath string)
	traverse = func(fi os.FileInfo, dirPath, zipPath string) {
		fd, err := os.Open(dirPath)
		if err != nil {
			panic(err)
		}
		fis, err := fd.Readdir(0)
		if err != nil {
			panic(err)
		}
		for _, fi := range fis {
			if fi.IsDir() {
				traverse(fi,
					path.Join(dirPath, fi.Name()),
					path.Join(zipPath, fi.Name()),
				)
			} else {
				fileName := path.Join(dirPath, fi.Name())
				zipName := path.Join(zipPath, fi.Name())
				f, err := os.Open(fileName)
				if err != nil {
					panic(err)
				}
				files[zipName] = f
			}
		}
	}
	traverse(reobf, "reobf/minecraft", "")

	// ... zip files
	zipName := "dist/" + archiveName + ".zip"
	outZip, err := os.Create(zipName)
	if err != nil {
		panic(err)
	}
	zipWriter := zip.NewWriter(outZip)
	for zipPath, file := range files {
		of, err := zipWriter.Create(zipPath)
		if err != nil {
			panic(err)
		}
		_, err = io.Copy(of, file)
		if err != nil {
			panic(err)
		}
	}
	err = zipWriter.Close()
	if err != nil {
		panic(err)
	}
	fmt.Println("[=]jar written to " + zipName)
}