README
¶
Embedder
Generate constant variable by globbing any kind of text file such as html or sql. The values are gzip compressed and base64 encoded (using standard encoding, not URL encoding). This is useful for keeping web app to a single file, therefore simplifying deployment.
For other frontend stuff you may also want to also consider ZipFS as it's better suited for code generated by a task running or other automated system such as grunt, gulp, webpack, rollup or taskforce 😉.
Have fun! 😄
Installation
$ go get github.com/cjtoolkit/embedder
Usage
$ embedder DestPackageName, DestFilename, GlobPattern...
Also add the following to anywhere in your codebase, so you can decode the constant values, make sure the package name is correct and you can change it to your taste.
package embedderTools
import (
"bytes"
"compress/gzip"
"encoding/base64"
"io"
"log"
)
func DecodeValue(value string) []byte {
raw, err := base64.StdEncoding.DecodeString(value)
errCheck(err)
r, err := gzip.NewReader(bytes.NewReader(raw))
errCheck(err)
buf := &bytes.Buffer{}
_, err = io.Copy(buf, r)
errCheck(err)
return buf.Bytes()
}
func errCheck(err error) {
if err != nil {
log.Panic(err)
}
}
Example
Input
resources/example1.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>{{.PageTitle}}</h1>
<ul>
{{range .Todos}}
{{if .Done}}
<li class="done">{{.Title}}</li>
{{else}}
<li>{{.Title}}</li>
{{end}}
{{end}}
</ul>
</body>
</html>
resources/example2.html
<h1>{{.PageTitle}}</h1>
<ul>
{{range .Todos}}
{{if .Done}}
<li class="done">{{.Title}}</li>
{{else}}
<li>{{.Title}}</li>
{{end}}
{{end}}
</ul>
generate.go
//go:generate embedder example const.go resources/*.html
package example
and than run $ go generate
Output
const.go
// Code generated by Embedder. DO NOT EDIT.
package example
const (
// Source: resources/example1.html
Example1 = `H4sIAAAAAAAC/3yQO08EIRDHez7FSO+S6yxmaTxtvQILSzzGXZI5SBYsDOG7G2A1WxgbHv/Hjwfe
nV8ezdvlCdZ8Yy2wTcA2LLOkIJtA1mkBAIA3yhauq90S5Vm+muf7B7lb2WcmbdqIamwEqtHF9+i+
GumkS5kudqGeqxXVetICP3lAStlsWAgmE11MtXZxGP4DpnMMdBD7sezhyjalWboYSDb+L5u9PhCI
0x/t/wrB7fmfNap2U1T7c1T/se8AAAD//2oeexlBAQAA`
// Source: resources/example2.html
Example2 = `H4sIAAAAAAAC/7LJMLSrrtYLSExPDcksyUmtrbXRzzC047IpzbHjUlBQUKiuLkrMS09V0AvJT8kv
rq0FC0IkMtMU9Fzy81KRBEHAJidTITknsbjYViklPy9VCWQ+3OycTDskE1JzirHoxqchLwWqHsa2
0S/NsQMEAAD//wbsY17GAAAA`
)
Documentation
¶
There is no documentation for this package.
Source Files