mirror of https://github.com/ouqiang/gocron
ouqiang
7 years ago
parent
06859f3464
commit
e497261789
@ -0,0 +1,202 @@
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|
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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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1. Definitions.
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Copyright 2014 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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@ -0,0 +1,45 @@
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# statik
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[](https://travis-ci.org/rakyll/statik)
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statik allows you to embed a directory of static files into your Go binary to be later served from an http.FileSystem.
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||||
|
||||
Is this a crazy idea? No, not necessarily. If you're building a tool that has a Web component, you typically want to serve some images, CSS and JavaScript. You like the comfort of distributing a single binary, so you don't want to mess with deploying them elsewhere. If your static files are not large in size and will be browsed by a few people, statik is a solution you are looking for.
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## Usage
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Install the command line tool first.
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go get github.com/rakyll/statik
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statik is a tiny program that reads a directory and generates a source file contains its contents. The generated source file registers the directory contents to be used by statik file system.
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The command below will walk on the public path and generate a package called `statik` under the current working directory.
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$ statik -src=/path/to/your/project/public
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In your program, all your need to do is to import the generated package, initialize a new statik file system and serve.
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~~~ go
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import (
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"github.com/rakyll/statik/fs"
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_ "./statik" // TODO: Replace with the absolute import path
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)
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// ...
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statikFS, err := fs.New()
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if err != nil {
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log.Fatal(err)
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}
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http.Handle("/public/", http.StripPrefix("/public/", http.FileServer(statikFS)))
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http.ListenAndServe(":8080", nil)
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~~~
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Visit http://localhost:8080/public/path/to/file to see your file.
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There is also a working example under [example](https://github.com/rakyll/statik/tree/master/example) directory, follow the instructions to build and run it.
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Note: The idea and the implementation are hijacked from [camlistore](http://camlistore.org/). I decided to decouple it from its codebase due to the fact I'm actively in need of a similar solution for many of my projects.
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@ -0,0 +1,233 @@
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// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
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// Package contains a program that generates code to register
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// a directory and its contents as zip data for statik file system.
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package main
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import (
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"archive/zip"
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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"
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"path/filepath"
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"strings"
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"time"
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)
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const (
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namePackage = "statik"
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nameSourceFile = "statik.go"
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)
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var (
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flagSrc = flag.String("src", path.Join(".", "public"), "The path of the source directory.")
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flagDest = flag.String("dest", ".", "The destination path of the generated package.")
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flagNoMtime = flag.Bool("m", false, "Ignore modification times on files.")
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flagNoCompress = flag.Bool("Z", false, "Do not use compression to shrink the files.")
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flagForce = flag.Bool("f", false, "Overwrite destination file if it already exists.")
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flagTags = flag.String("tags", "", "Write build constraint tags")
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)
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// mtimeDate holds the arbitrary mtime that we assign to files when
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// flagNoMtime is set.
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var mtimeDate = time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC)
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func main() {
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flag.Parse()
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file, err := generateSource(*flagSrc)
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if err != nil {
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exitWithError(err)
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}
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destDir := path.Join(*flagDest, namePackage)
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err = os.MkdirAll(destDir, 0755)
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if err != nil {
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exitWithError(err)
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}
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err = rename(file.Name(), path.Join(destDir, nameSourceFile))
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if err != nil {
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exitWithError(err)
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}
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}
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// rename tries to os.Rename, but fall backs to copying from src
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// to dest and unlink the source if os.Rename fails.
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func rename(src, dest string) error {
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// Try to rename generated source.
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if err := os.Rename(src, dest); err == nil {
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return nil
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}
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// If the rename failed (might do so due to temporary file residing on a
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// different device), try to copy byte by byte.
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rc, err := os.Open(src)
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if err != nil {
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return err
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}
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defer func() {
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rc.Close()
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os.Remove(src) // ignore the error, source is in tmp.
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}()
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if _, err = os.Stat(dest); !os.IsNotExist(err) {
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if *flagForce {
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if err = os.Remove(dest); err != nil {
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return fmt.Errorf("file %q could not be deleted", dest)
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}
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} else {
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return fmt.Errorf("file %q already exists; use -f to overwrite", dest)
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}
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}
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wc, err := os.Create(dest)
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if err != nil {
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return err
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}
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defer wc.Close()
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if _, err = io.Copy(wc, rc); err != nil {
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// Delete remains of failed copy attempt.
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os.Remove(dest)
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}
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return err
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}
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// Walks on the source path and generates source code
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// that contains source directory's contents as zip contents.
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// Generates source registers generated zip contents data to
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// be read by the statik/fs HTTP file system.
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func generateSource(srcPath string) (file *os.File, err error) {
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var (
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buffer bytes.Buffer
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zipWriter io.Writer
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)
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zipWriter = &buffer
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f, err := ioutil.TempFile("", namePackage)
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||||
if err != nil {
|
||||
return
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||||
}
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||||
|
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zipWriter = io.MultiWriter(zipWriter, f)
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||||
defer f.Close()
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||||
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w := zip.NewWriter(zipWriter)
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if err = filepath.Walk(srcPath, func(path string, fi os.FileInfo, err error) error {
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// Ignore directories and hidden files.
|
||||
// No entry is needed for directories in a zip file.
|
||||
// Each file is represented with a path, no directory
|
||||
// entities are required to build the hierarchy.
|
||||
if fi.IsDir() || strings.HasPrefix(fi.Name(), ".") {
|
||||
return nil
|
||||
}
|
||||
relPath, err := filepath.Rel(srcPath, path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
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||||
b, err := ioutil.ReadFile(path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
fHeader, err := zip.FileInfoHeader(fi)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *flagNoMtime {
|
||||
// Always use the same modification time so that
|
||||
// the output is deterministic with respect to the file contents.
|
||||
fHeader.SetModTime(mtimeDate)
|
||||
}
|
||||
fHeader.Name = filepath.ToSlash(relPath)
|
||||
if !*flagNoCompress {
|
||||
fHeader.Method = zip.Deflate
|
||||
}
|
||||
f, err := w.CreateHeader(fHeader)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = f.Write(b)
|
||||
return err
|
||||
}); err != nil {
|
||||
return
|
||||
}
|
||||
if err = w.Close(); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var tags string
|
||||
if *flagTags != "" {
|
||||
tags = "\n// +build " + *flagTags + "\n"
|
||||
}
|
||||
|
||||
// then embed it as a quoted string
|
||||
var qb bytes.Buffer
|
||||
fmt.Fprintf(&qb, `// Code generated by statik. DO NOT EDIT.
|
||||
%s
|
||||
package %s
|
||||
|
||||
import (
|
||||
"github.com/rakyll/statik/fs"
|
||||
)
|
||||
|
||||
func init() {
|
||||
data := "`, tags, namePackage)
|
||||
FprintZipData(&qb, buffer.Bytes())
|
||||
fmt.Fprint(&qb, `"
|
||||
fs.Register(data)
|
||||
}
|
||||
`)
|
||||
|
||||
if err = ioutil.WriteFile(f.Name(), qb.Bytes(), 0644); err != nil {
|
||||
return
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
// FprintZipData converts zip binary contents to a string literal.
|
||||
func FprintZipData(dest *bytes.Buffer, zipData []byte) {
|
||||
for _, b := range zipData {
|
||||
if b == '\n' {
|
||||
dest.WriteString(`\n`)
|
||||
continue
|
||||
}
|
||||
if b == '\\' {
|
||||
dest.WriteString(`\\`)
|
||||
continue
|
||||
}
|
||||
if b == '"' {
|
||||
dest.WriteString(`\"`)
|
||||
continue
|
||||
}
|
||||
if (b >= 32 && b <= 126) || b == '\t' {
|
||||
dest.WriteByte(b)
|
||||
continue
|
||||
}
|
||||
fmt.Fprintf(dest, "\\x%02x", b)
|
||||
}
|
||||
}
|
||||
|
||||
// Prints out the error message and exists with a non-success signal.
|
||||
func exitWithError(err error) {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
Loading…
Reference in new issue