codeskyblue
8 years ago
parent
f8a57030a5
commit
750dd7211b
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Copyright (c) 2014, Elazar Leibovich
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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@ -1,46 +0,0 @@
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# go-bindata-assetfs
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Serve embedded files from [jteeuwen/go-bindata](https://github.com/jteeuwen/go-bindata) with `net/http`.
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[GoDoc](http://godoc.org/github.com/elazarl/go-bindata-assetfs)
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### Installation
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Install with
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$ go get github.com/jteeuwen/go-bindata/...
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$ go get github.com/elazarl/go-bindata-assetfs/...
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### Creating embedded data
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Usage is identical to [jteeuwen/go-bindata](https://github.com/jteeuwen/go-bindata) usage,
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instead of running `go-bindata` run `go-bindata-assetfs`.
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The tool will create a `bindata_assetfs.go` file, which contains the embedded data.
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A typical use case is
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$ go-bindata-assetfs data/...
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### Using assetFS in your code
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The generated file provides an `assetFS()` function that returns a `http.Filesystem`
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wrapping the embedded files. What you usually want to do is:
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http.Handle("/", http.FileServer(assetFS()))
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This would run an HTTP server serving the embedded files.
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## Without running binary tool
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You can always just run the `go-bindata` tool, and then
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use
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import "github.com/elazarl/go-bindata-assetfs"
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...
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http.Handle("/",
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http.FileServer(
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&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "data"}))
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to serve files embedded from the `data` directory.
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@ -1,147 +0,0 @@
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package assetfs
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import (
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"bytes"
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"errors"
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"io"
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"io/ioutil"
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"net/http"
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"os"
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"path"
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"path/filepath"
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"time"
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)
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var (
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fileTimestamp = time.Now()
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)
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// FakeFile implements os.FileInfo interface for a given path and size
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type FakeFile struct {
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// Path is the path of this file
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Path string
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// Dir marks of the path is a directory
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Dir bool
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// Len is the length of the fake file, zero if it is a directory
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Len int64
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}
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func (f *FakeFile) Name() string {
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_, name := filepath.Split(f.Path)
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return name
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}
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func (f *FakeFile) Mode() os.FileMode {
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mode := os.FileMode(0644)
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if f.Dir {
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return mode | os.ModeDir
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}
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return mode
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}
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func (f *FakeFile) ModTime() time.Time {
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return fileTimestamp
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}
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func (f *FakeFile) Size() int64 {
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return f.Len
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}
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func (f *FakeFile) IsDir() bool {
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return f.Mode().IsDir()
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}
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func (f *FakeFile) Sys() interface{} {
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return nil
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}
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// AssetFile implements http.File interface for a no-directory file with content
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type AssetFile struct {
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*bytes.Reader
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io.Closer
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FakeFile
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}
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func NewAssetFile(name string, content []byte) *AssetFile {
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return &AssetFile{
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bytes.NewReader(content),
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ioutil.NopCloser(nil),
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FakeFile{name, false, int64(len(content))}}
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}
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func (f *AssetFile) Readdir(count int) ([]os.FileInfo, error) {
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return nil, errors.New("not a directory")
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}
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func (f *AssetFile) Size() int64 {
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return f.FakeFile.Size()
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}
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func (f *AssetFile) Stat() (os.FileInfo, error) {
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return f, nil
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}
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// AssetDirectory implements http.File interface for a directory
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type AssetDirectory struct {
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AssetFile
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ChildrenRead int
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Children []os.FileInfo
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}
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func NewAssetDirectory(name string, children []string, fs *AssetFS) *AssetDirectory {
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fileinfos := make([]os.FileInfo, 0, len(children))
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for _, child := range children {
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_, err := fs.AssetDir(filepath.Join(name, child))
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fileinfos = append(fileinfos, &FakeFile{child, err == nil, 0})
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}
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return &AssetDirectory{
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AssetFile{
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bytes.NewReader(nil),
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ioutil.NopCloser(nil),
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FakeFile{name, true, 0},
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},
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0,
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fileinfos}
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}
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func (f *AssetDirectory) Readdir(count int) ([]os.FileInfo, error) {
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if count <= 0 {
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return f.Children, nil
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}
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if f.ChildrenRead+count > len(f.Children) {
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count = len(f.Children) - f.ChildrenRead
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}
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rv := f.Children[f.ChildrenRead : f.ChildrenRead+count]
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f.ChildrenRead += count
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return rv, nil
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}
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func (f *AssetDirectory) Stat() (os.FileInfo, error) {
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return f, nil
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}
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// AssetFS implements http.FileSystem, allowing
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// embedded files to be served from net/http package.
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type AssetFS struct {
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// Asset should return content of file in path if exists
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Asset func(path string) ([]byte, error)
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// AssetDir should return list of files in the path
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AssetDir func(path string) ([]string, error)
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// Prefix would be prepended to http requests
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Prefix string
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}
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func (fs *AssetFS) Open(name string) (http.File, error) {
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name = path.Join(fs.Prefix, name)
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if len(name) > 0 && name[0] == '/' {
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name = name[1:]
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}
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if b, err := fs.Asset(name); err == nil {
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return NewAssetFile(name, b), nil
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}
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if children, err := fs.AssetDir(name); err == nil {
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return NewAssetDirectory(name, children, fs), nil
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} else {
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return nil, err
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}
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}
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@ -1,13 +0,0 @@
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// assetfs allows packages to serve static content embedded
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// with the go-bindata tool with the standard net/http package.
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//
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// See https://github.com/jteeuwen/go-bindata for more information
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// about embedding binary data with go-bindata.
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//
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// Usage example, after running
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// $ go-bindata data/...
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// use:
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// http.Handle("/",
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// http.FileServer(
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// &assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "data"}))
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package assetfs
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