Local fork of go-bindata, because the upstream projects seem tempestuous.
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// This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
// license. Its contents can be found at:
// http://creativecommons.org/publicdomain/zero/1.0/
package bindata
import (
"fmt"
"io"
"sort"
"strings"
)
type assetTree struct {
Asset Asset
Children map[string]*assetTree
}
func newAssetTree() *assetTree {
tree := &assetTree{}
tree.Children = make(map[string]*assetTree)
return tree
}
func (node *assetTree) child(name string) *assetTree {
rv, ok := node.Children[name]
if !ok {
rv = newAssetTree()
node.Children[name] = rv
}
return rv
}
func (root *assetTree) Add(route []string, asset Asset) {
for _, name := range route {
root = root.child(name)
}
root.Asset = asset
}
func ident(w io.Writer, n int) {
for i := 0; i < n; i++ {
w.Write([]byte{'\t'})
}
}
func (root *assetTree) funcOrNil() string {
if root.Asset.Func == "" {
return "nil"
} else {
return root.Asset.Func
}
}
func (root *assetTree) writeGoMap(w io.Writer, nident int) {
fmt.Fprintf(w, "&bintree{%s, map[string]*bintree{", root.funcOrNil())
if len(root.Children) > 0 {
io.WriteString(w, "\n")
// Sort to make output stable between invocations
filenames := make([]string, len(root.Children))
i := 0
for filename, _ := range root.Children {
filenames[i] = filename
i++
}
sort.Strings(filenames)
for _, p := range filenames {
ident(w, nident+1)
fmt.Fprintf(w, `"%s": `, p)
root.Children[p].writeGoMap(w, nident+1)
}
ident(w, nident)
}
io.WriteString(w, "}}")
if nident > 0 {
io.WriteString(w, ",")
}
io.WriteString(w, "\n")
}
func (root *assetTree) WriteAsGoMap(w io.Writer) error {
_, err := fmt.Fprint(w, `type bintree struct {
Func func() (*asset, error)
Children map[string]*bintree
}
var _bintree = `)
root.writeGoMap(w, 0)
return err
}
func writeTOCTree(w io.Writer, toc []Asset) error {
_, err := fmt.Fprintf(w, `// AssetDir returns the file names below a certain
// directory embedded in the file by go-bindata.
// For example if you run go-bindata on data/... and data contains the
// following hierarchy:
// data/
// foo.txt
// img/
// a.png
// b.png
// then AssetDir("data") would return []string{"foo.txt", "img"}
// AssetDir("data/img") would return []string{"a.png", "b.png"}
// AssetDir("foo.txt") and AssetDir("notexist") would return an error
// AssetDir("") will return []string{"data"}.
func AssetDir(name string) ([]string, error) {
node := _bintree
if len(name) != 0 {
cannonicalName := strings.Replace(name, "\\", "/", -1)
pathList := strings.Split(cannonicalName, "/")
for _, p := range pathList {
node = node.Children[p]
if node == nil {
return nil, fmt.Errorf("Asset %%s not found", name)
}
}
}
if node.Func != nil {
return nil, fmt.Errorf("Asset %%s not found", name)
}
rv := make([]string, 0, len(node.Children))
for childName := range node.Children {
rv = append(rv, childName)
}
return rv, nil
}
`)
if err != nil {
return err
}
tree := newAssetTree()
for i := range toc {
pathList := strings.Split(toc[i].Name, "/")
tree.Add(pathList, toc[i])
}
return tree.WriteAsGoMap(w)
}
// writeTOC writes the table of contents file.
func writeTOC(w io.Writer, toc []Asset) error {
err := writeTOCHeader(w)
if err != nil {
return err
}
for i := range toc {
err = writeTOCAsset(w, &toc[i])
if err != nil {
return err
}
}
return writeTOCFooter(w)
}
// writeTOCHeader writes the table of contents file header.
func writeTOCHeader(w io.Writer) error {
_, err := fmt.Fprintf(w, `// Asset loads and returns the asset for the given name.
// It returns an error if the asset could not be found or
// could not be loaded.
func Asset(name string) ([]byte, error) {
cannonicalName := strings.Replace(name, "\\", "/", -1)
if f, ok := _bindata[cannonicalName]; ok {
a, err := f()
if err != nil {
return nil, fmt.Errorf("Asset %%s can't read by error: %%v", name, err)
}
return a.bytes, nil
}
return nil, fmt.Errorf("Asset %%s not found", name)
}
// MustAsset is like Asset but panics when Asset would return an error.
// It simplifies safe initialization of global variables.
func MustAsset(name string) []byte {
a, err := Asset(name)
if err != nil {
panic("asset: Asset(" + name + "): " + err.Error())
}
return a
}
// AssetInfo loads and returns the asset info for the given name.
// It returns an error if the asset could not be found or
// could not be loaded.
func AssetInfo(name string) (os.FileInfo, error) {
cannonicalName := strings.Replace(name, "\\", "/", -1)
if f, ok := _bindata[cannonicalName]; ok {
a, err := f()
if err != nil {
return nil, fmt.Errorf("AssetInfo %%s can't read by error: %%v", name, err)
}
return a.info, nil
}
return nil, fmt.Errorf("AssetInfo %%s not found", name)
}
// AssetNames returns the names of the assets.
func AssetNames() []string {
names := make([]string, 0, len(_bindata))
for name := range _bindata {
names = append(names, name)
}
return names
}
// _bindata is a table, holding each asset generator, mapped to its name.
var _bindata = map[string]func() (*asset, error){
`)
return err
}
// writeTOCAsset write a TOC entry for the given asset.
func writeTOCAsset(w io.Writer, asset *Asset) error {
_, err := fmt.Fprintf(w, "\t%q: %s,\n", asset.Name, asset.Func)
return err
}
// writeTOCFooter writes the table of contents file footer.
func writeTOCFooter(w io.Writer) error {
_, err := fmt.Fprintf(w, `}
`)
return err
}