149 lines
2.5 KiB
Go
149 lines
2.5 KiB
Go
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//go:build !embed
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// +build !embed
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package static
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import (
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"bytes"
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"io/fs"
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"os"
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"strings"
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"time"
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)
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var Templates FS
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type file struct {
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path string
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name string
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content []byte
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}
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var templateNames = []string{}
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var templates = make(map[string][]file)
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var StaticPath string
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func CopyTemplatesToMemory() {
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baseDir, err := os.ReadDir(StaticPath)
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try(err)
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for _, c := range baseDir {
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if c.IsDir() {
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templateNames = append(templateNames, c.Name())
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var filePath strings.Builder
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filePath.WriteString(StaticPath)
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filePath.WriteString("/")
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filePath.WriteString(c.Name())
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dir, err := os.ReadDir(filePath.String())
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try(err)
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filePath.WriteString("/")
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for _, cd := range dir {
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f, err := os.ReadFile(filePath.String() + cd.Name())
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try(err)
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templates[c.Name()] = append(templates[c.Name()], file{
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content: f,
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name: cd.Name(),
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path: c.Name() + "/" + cd.Name(),
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})
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}
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}
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}
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}
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type FS struct{}
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func (FS) Open(name string) (fs.File, error) {
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for i, l := 0, len(templateNames); i < l; i++ {
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for _, x := range templates[templateNames[i]] {
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if x.content != nil && name == x.path {
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return &File{
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name: x.path,
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content: bytes.NewBuffer(x.content),
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}, nil
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}
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}
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}
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return nil, &fs.PathError{}
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}
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func (FS) Glob(pattern string) ([]string, error) {
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trimmed := strings.Split(pattern, "/")
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var matches = []string{}
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for x, s := range templates {
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for i, l := 0, len(s); i < l && trimmed[0] == x; i++ {
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s := s[i]
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matches = append(matches, s.path)
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}
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}
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if len(matches) != 0 {
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return matches, nil
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}
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return nil, &fs.PathError{}
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}
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func try(err error) {
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if err != nil {
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println(err.Error())
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os.Exit(1)
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}
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}
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/* сделано на основе https://github.com/psanford/memfs; требуется для корректной работы templates.ParseFS */
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type fileInfo struct {
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name string
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}
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func (fi fileInfo) Name() string {
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return fi.name
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}
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func (fi fileInfo) Size() int64 {
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return 4096
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}
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func (fileInfo) Mode() fs.FileMode {
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return 0
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}
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func (fileInfo) ModTime() time.Time {
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return time.Time{}
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}
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func (fileInfo) IsDir() bool {
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return false
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}
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func (fileInfo) Sys() interface{} {
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return nil
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}
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type File struct {
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name string
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content *bytes.Buffer
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closed bool
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}
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func (f *File) Stat() (fs.FileInfo, error) {
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return fileInfo{
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name: f.name,
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}, nil
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}
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func (f *File) Read(b []byte) (int, error) {
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if f.closed {
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return 0, fs.ErrClosed
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}
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return f.content.Read(b)
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}
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func (f *File) Close() error {
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if f.closed {
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return fs.ErrClosed
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}
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f.closed = true
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return nil
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}
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