61 lines
1 KiB
Go
61 lines
1 KiB
Go
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// +build ignore
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// This program minifies JavaScript files
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// $ go run generate-js.go -dir scripts/ -out scripts/drone.min.js
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package main
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/dchest/jsmin"
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)
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var (
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dir = flag.String("dir", "scripts/", "")
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out = flag.String("o", "scripts/drone.min.js", "")
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)
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func main() {
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flag.Parse()
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var buf bytes.Buffer
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// walk the directory tree and write all
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// javascript files to the buffer.
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filepath.Walk(*dir, func(path string, info os.FileInfo, err error) error {
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if filepath.Ext(path) != ".js" {
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return nil
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}
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f, err := os.Open(path)
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if err != nil {
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return nil
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}
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defer f.Close()
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// write the file name to the minified output
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fmt.Fprintf(&buf, "// %s\n", path)
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// copy the file to the buffer
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_, err = io.Copy(&buf, f)
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return err
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})
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// minifies the javascript
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data, err := jsmin.Minify(buf.Bytes())
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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// write the minified output
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ioutil.WriteFile(*out, data, 0700)
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}
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