95 lines
1.7 KiB
Go
95 lines
1.7 KiB
Go
/*
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Copyright © 2023 Seednode <seednode@seedno.de>
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*/
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package cmd
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import (
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"errors"
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"os"
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"path/filepath"
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"strings"
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"github.com/h2non/filetype"
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)
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type SupportedType struct {
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title func(queryParams, filePath, mime, fileName string, width, height int) string
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body func(queryParams, filePath, mime, fileName string, width, height int) string
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extensions []string
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validator func([]byte) bool
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}
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func (i *SupportedType) Extensions() []string {
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return i.extensions
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}
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type SupportedTypes struct {
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types []*SupportedType
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}
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func (s *SupportedTypes) Add(t *SupportedType) {
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s.types = append(s.types, t)
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}
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func (s *SupportedTypes) Extensions() []string {
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var r []string
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for _, t := range s.types {
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r = append(r, t.Extensions()...)
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}
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return r
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}
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func (s *SupportedTypes) Type(extension string) *SupportedType {
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for i := range s.types {
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for _, e := range s.types[i].Extensions() {
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if extension == e {
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return s.types[i]
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}
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}
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}
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return nil
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}
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func (s *SupportedTypes) IsSupported(head []byte) bool {
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r := false
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for i := range s.types {
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if s.types[i].validator(head) {
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r = true
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}
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}
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return r
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}
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func fileType(path string, types *SupportedTypes) (bool, *SupportedType, string, error) {
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file, err := os.Open(path)
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switch {
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case errors.Is(err, os.ErrNotExist):
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return false, nil, "", nil
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case err != nil:
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return false, nil, "", err
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}
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defer file.Close()
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head := make([]byte, 261)
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file.Read(head)
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extension := filepath.Ext(path)
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fileType := types.Type(extension)
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isSupported := types.IsSupported(head)
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if !isSupported {
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return false, nil, "", nil
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}
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mimeType := (filetype.GetType(strings.TrimPrefix(extension, "."))).MIME.Value
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return isSupported, fileType, mimeType, nil
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}
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