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Add PHOTOFIELD_DOCS_PATH for rewriting paths (#92)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package rewrite | ||
|
|
||
| import ( | ||
| "io" | ||
| "io/fs" | ||
| "regexp" | ||
| "strings" | ||
| "testing/fstest" | ||
| "time" | ||
| ) | ||
|
|
||
| type FileSystem struct { | ||
| FS fs.FS | ||
| rewritten fstest.MapFS | ||
| } | ||
|
|
||
| func FS(fs fs.FS, exts []string, regex string, replace string) (*FileSystem, error) { | ||
| rfs := &FileSystem{ | ||
| FS: fs, | ||
| rewritten: make(fstest.MapFS), | ||
| } | ||
| var err error | ||
| re, err := regexp.Compile(regex) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| err = rfs.replace(exts, re, replace) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return rfs, nil | ||
| } | ||
|
|
||
| func (rfs *FileSystem) Open(name string) (fs.File, error) { | ||
| if f, err := rfs.rewritten.Open(name); err == nil { | ||
| return f, nil | ||
| } | ||
| return rfs.FS.Open(name) | ||
| } | ||
|
|
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| func (rfs *FileSystem) replace(exts []string, re *regexp.Regexp, repl string) error { | ||
| fs.WalkDir(rfs.FS, ".", func(path string, d fs.DirEntry, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if d.IsDir() { | ||
| return nil | ||
| } | ||
|
|
||
| if !strings.HasSuffix(path, ".html") && | ||
| !strings.HasSuffix(path, ".css") && | ||
| !strings.HasSuffix(path, ".js") { | ||
| return nil | ||
| } | ||
|
|
||
| f, err := rfs.FS.Open(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
|
||
| data, err := io.ReadAll(f) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| str := string(data) | ||
|
|
||
| r := re.ReplaceAllString(str, repl) | ||
| contains := str != r | ||
| if contains { | ||
| rfs.rewritten[path] = &fstest.MapFile{ | ||
| Data: []byte(r), | ||
| Mode: 0644, | ||
| ModTime: time.Now(), | ||
| } | ||
| } | ||
| return nil | ||
| }) | ||
| return nil | ||
| } |
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