388 lines
7.1 KiB
Go
388 lines
7.1 KiB
Go
// This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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// license. Its contents can be found at:
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// http://creativecommons.org/publicdomain/zero/1.0/
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package bindata
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import (
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"bytes"
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"compress/gzip"
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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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"unicode/utf8"
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)
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// writeRelease writes the release code file.
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func writeRelease(w io.Writer, c *Config, toc []Asset) error {
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err := writeReleaseHeader(w, c)
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if err != nil {
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return err
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}
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for i := range toc {
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err = writeReleaseAsset(w, c, &toc[i])
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if err != nil {
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return err
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}
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}
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return nil
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}
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// writeReleaseHeader writes output file headers.
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// This targets release builds.
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func writeReleaseHeader(w io.Writer, c *Config) error {
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var err error
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if c.NoCompress {
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if c.NoMemCopy {
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err = header_uncompressed_nomemcopy(w)
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} else {
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err = header_uncompressed_memcopy(w)
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}
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} else {
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if c.NoMemCopy {
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err = header_compressed_nomemcopy(w)
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} else {
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err = header_compressed_memcopy(w)
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}
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}
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if err != nil {
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return err
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}
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return header_release_common(w)
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}
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// writeReleaseAsset write a release entry for the given asset.
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// A release entry is a function which embeds and returns
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// the file's byte content.
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func writeReleaseAsset(w io.Writer, c *Config, asset *Asset) error {
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fd, err := os.Open(asset.Path)
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if err != nil {
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return err
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}
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defer fd.Close()
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if c.NoCompress {
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if c.NoMemCopy {
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err = uncompressed_nomemcopy(w, asset, fd)
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} else {
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err = uncompressed_memcopy(w, asset, fd)
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}
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} else {
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if c.NoMemCopy {
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err = compressed_nomemcopy(w, asset, fd)
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} else {
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err = compressed_memcopy(w, asset, fd)
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}
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}
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if err != nil {
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return err
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}
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return asset_release_common(w, c, asset)
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}
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// sanitize prepares a valid UTF-8 string as a raw string constant.
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// Based on https://code.google.com/p/go/source/browse/godoc/static/makestatic.go?repo=tools
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func sanitize(b []byte) []byte {
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// Replace ` with `+"`"+`
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b = bytes.Replace(b, []byte("`"), []byte("`+\"`\"+`"), -1)
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// Replace BOM with `+"\xEF\xBB\xBF"+`
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// (A BOM is valid UTF-8 but not permitted in Go source files.
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// I wouldn't bother handling this, but for some insane reason
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// jquery.js has a BOM somewhere in the middle.)
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return bytes.Replace(b, []byte("\xEF\xBB\xBF"), []byte("`+\"\\xEF\\xBB\\xBF\"+`"), -1)
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}
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func header_compressed_nomemcopy(w io.Writer) error {
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_, err := fmt.Fprintf(w, `import (
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"bytes"
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"compress/gzip"
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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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"strings"
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"time"
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)
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func bindataRead(data, name string) ([]byte, error) {
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gz, err := gzip.NewReader(strings.NewReader(data))
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if err != nil {
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return nil, fmt.Errorf("Read %%q: %%v", name, err)
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}
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var buf bytes.Buffer
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_, err = io.Copy(&buf, gz)
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clErr := gz.Close()
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if err != nil {
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return nil, fmt.Errorf("Read %%q: %%v", name, err)
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}
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if clErr != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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`)
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return err
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}
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func header_compressed_memcopy(w io.Writer) error {
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_, err := fmt.Fprintf(w, `import (
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"bytes"
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"compress/gzip"
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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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"strings"
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"time"
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)
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func bindataRead(data []byte, name string) ([]byte, error) {
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gz, err := gzip.NewReader(bytes.NewBuffer(data))
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if err != nil {
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return nil, fmt.Errorf("Read %%q: %%v", name, err)
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}
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var buf bytes.Buffer
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_, err = io.Copy(&buf, gz)
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clErr := gz.Close()
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if err != nil {
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return nil, fmt.Errorf("Read %%q: %%v", name, err)
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}
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if clErr != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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`)
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return err
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}
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func header_uncompressed_nomemcopy(w io.Writer) error {
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_, err := fmt.Fprintf(w, `import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"strings"
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"time"
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"unsafe"
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)
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func bindataRead(data, name string) ([]byte, error) {
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var empty [0]byte
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sx := (*reflect.StringHeader)(unsafe.Pointer(&data))
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b := empty[:]
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bx := (*reflect.SliceHeader)(unsafe.Pointer(&b))
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bx.Data = sx.Data
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bx.Len = len(data)
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bx.Cap = bx.Len
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return b, nil
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}
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`)
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return err
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}
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func header_uncompressed_memcopy(w io.Writer) error {
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_, err := fmt.Fprintf(w, `import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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`)
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return err
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}
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func header_release_common(w io.Writer) error {
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_, err := fmt.Fprintf(w, `type asset struct {
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bytes []byte
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info os.FileInfo
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}
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type bindataFileInfo struct {
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name string
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size int64
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mode os.FileMode
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modTime time.Time
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}
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func (fi bindataFileInfo) Name() string {
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return fi.name
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}
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func (fi bindataFileInfo) Size() int64 {
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return fi.size
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}
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func (fi bindataFileInfo) Mode() os.FileMode {
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return fi.mode
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}
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func (fi bindataFileInfo) ModTime() time.Time {
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return fi.modTime
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}
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func (fi bindataFileInfo) IsDir() bool {
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return false
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}
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func (fi bindataFileInfo) Sys() interface{} {
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return nil
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}
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`)
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return err
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}
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func compressed_nomemcopy(w io.Writer, asset *Asset, r io.Reader) error {
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_, err := fmt.Fprintf(w, `var _%s = "`, asset.Func)
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if err != nil {
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return err
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}
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gz := gzip.NewWriter(&StringWriter{Writer: w})
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_, err = io.Copy(gz, r)
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gz.Close()
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if err != nil {
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return err
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}
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_, err = fmt.Fprintf(w, `"
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func %sBytes() ([]byte, error) {
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return bindataRead(
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_%s,
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%q,
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)
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}
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`, asset.Func, asset.Func, asset.Name)
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return err
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}
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func compressed_memcopy(w io.Writer, asset *Asset, r io.Reader) error {
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_, err := fmt.Fprintf(w, `var _%s = []byte("`, asset.Func)
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if err != nil {
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return err
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}
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gz := gzip.NewWriter(&StringWriter{Writer: w})
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_, err = io.Copy(gz, r)
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gz.Close()
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if err != nil {
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return err
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}
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_, err = fmt.Fprintf(w, `")
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func %sBytes() ([]byte, error) {
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return bindataRead(
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_%s,
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%q,
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)
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}
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`, asset.Func, asset.Func, asset.Name)
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return err
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}
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func uncompressed_nomemcopy(w io.Writer, asset *Asset, r io.Reader) error {
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_, err := fmt.Fprintf(w, `var _%s = "`, asset.Func)
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if err != nil {
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return err
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}
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_, err = io.Copy(&StringWriter{Writer: w}, r)
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if err != nil {
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return err
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}
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_, err = fmt.Fprintf(w, `"
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func %sBytes() ([]byte, error) {
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return bindataRead(
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_%s,
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%q,
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)
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}
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`, asset.Func, asset.Func, asset.Name)
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return err
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}
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func uncompressed_memcopy(w io.Writer, asset *Asset, r io.Reader) error {
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_, err := fmt.Fprintf(w, `var _%s = []byte(`, asset.Func)
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if err != nil {
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return err
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}
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b, err := ioutil.ReadAll(r)
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if err != nil {
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return err
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}
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if utf8.Valid(b) && !bytes.Contains(b, []byte{0}) {
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fmt.Fprintf(w, "`%s`", sanitize(b))
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} else {
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fmt.Fprintf(w, "%+q", b)
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}
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_, err = fmt.Fprintf(w, `)
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func %sBytes() ([]byte, error) {
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return _%s, nil
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}
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`, asset.Func, asset.Func)
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return err
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}
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func asset_release_common(w io.Writer, c *Config, asset *Asset) error {
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fi, err := os.Stat(asset.Path)
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if err != nil {
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return err
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}
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mode := uint(fi.Mode())
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modTime := fi.ModTime().Unix()
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size := fi.Size()
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if c.NoMetadata {
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mode = 0
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modTime = 0
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size = 0
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}
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if c.Mode > 0 {
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mode = uint(os.ModePerm) & c.Mode
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}
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if c.ModTime > 0 {
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modTime = c.ModTime
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}
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_, err = fmt.Fprintf(w, `func %s() (*asset, error) {
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bytes, err := %sBytes()
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if err != nil {
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return nil, err
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}
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info := bindataFileInfo{name: %q, size: %d, mode: os.FileMode(%d), modTime: time.Unix(%d, 0)}
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a := &asset{bytes: bytes, info: info}
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return a, nil
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}
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`, asset.Func, asset.Func, asset.Name, size, mode, modTime)
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return err
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}
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