Add bundler

cmd/bundler.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+)
+
+var (
+	src = flag.String("src", "web3.js", "web3.js source file")
+	dst = flag.String("dst", "", "destination file. leave empty to print into stdout")
+	pkg = flag.String("pkg", "web3js", "package of the destionation file")
+)
+
+func main() {
+	flag.Parse()
+	data, err := ioutil.ReadFile(*src)
+	must(err)
+	b := bytes.NewBuffer([]byte{})
+	fmt.Fprintf(b, "// Code is generated. DO NOT EDIT.\n\n")
+	fmt.Fprintf(b, "package %s\n\n", *pkg)
+	fmt.Fprintf(b, "// Web3CODE is a binary representation of web3js mini.\n")
+	fmt.Fprintf(b, "var Web3CODE = []byte{")
+	last := len(data) - 1
+	for i, byt := range data {
+		fmt.Fprint(b, byt)
+		if i != last {
+			fmt.Fprint(b, ", ")
+		}
+	}
+	fmt.Fprintf(b, "}\n")
+	if *dst == "" {
+		io.Copy(os.Stdout, b)
+	} else {
+		must(ioutil.WriteFile(*dst, b.Bytes(), 0644))
+	}
+}
+
+func must(err error) {
+	if err != nil {
+		panic(err)
+	}
+}