/
mimetype.go
169 lines (147 loc) · 10.4 KB
/
mimetype.go
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package common
import (
"fmt"
"github.com/gabriel-vasile/mimetype"
"github.com/h2non/filetype"
"os"
"path/filepath"
"strings"
)
const (
MimetypeHeaderLen = 1024
)
type MimetypeExtension struct {
MimeType, Ext string
}
var Mimetypes = make(map[string]MimetypeExtension)
var (
MimetypeApplicationDicom = registerMimeType("application/dicom", "dcm")
MimetypeApplicationEpubZip = registerMimeType("application/epub+zip", "epub")
MimetypeApplicationGeoJson = registerMimeType("application/geo+json", "geojson")
MimetypeApplicationGmlXml = registerMimeType("application/gml+xml", "gml")
MimetypeApplicationGpxXml = registerMimeType("application/gpx+xml", "gpx")
MimetypeApplicationGzip = registerMimeType("application/gzip", "gz")
MimetypeApplicationJar = registerMimeType("application/jar", "jar")
MimetypeApplicationJavascript = registerMimeType("application/javascript", "js")
MimetypeApplicationJson = registerMimeType("application/json", "json")
MimetypeApplicationMsword = registerMimeType("application/msword", "doc")
MimetypeApplicationOctetStream = registerMimeType("application/octet-stream", "bin")
MimetypeApplicationOgg = registerMimeType("application/ogg", "ogg")
MimetypeApplicationPdf = registerMimeType("application/pdf", "pdf")
MimetypeApplicationPostscript = registerMimeType("application/postscript", "ps")
MimetypeApplicationVndGarminTcxXml = registerMimeType("application/vnd.garmin.tcx+xml", "tcx")
MimetypeApplicationVndGoogleEarthKmlXml = registerMimeType("application/vnd.google-earth.kml+xml", "kml")
MimetypeApplicationVndMsExcel = registerMimeType("application/vnd.ms-excel", "xls")
MimetypeApplicationVndMsPowerpoint = registerMimeType("application/vnd.ms-powerpoint", "ppt")
MimetypeApplicationVndOpenxmlformatsOfficedocumentPresentationmlPresentation = registerMimeType("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx")
MimetypeApplicationVndOpenxmlformatsOfficedocumentSpreadsheetmlSheet = registerMimeType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx")
MimetypeApplicationVndOpenxmlformatsOfficedocumentWordprocessingmlDocument = registerMimeType("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx")
MimetypeApplicationWasm = registerMimeType("application/wasm", "wasm")
MimetypeApplicationX7ZCompressed = registerMimeType("application/x-7z-compressed", "7z")
MimetypeApplicationXChromeExtension = registerMimeType("application/x-chrome-extension", "crx")
MimetypeApplicationXJavaApplet = registerMimeType("application/x-java-applet; charset=binary", "class")
MimetypeApplicationXPhotoshop = registerMimeType("application/x-photoshop", "psd")
MimetypeApplicationXPython = registerMimeType("application/x-python", "py")
MimetypeApplicationXShockwaveFlash = registerMimeType("application/x-shockwave-flash", "swf")
MimetypeApplicationXTar = registerMimeType("application/x-tar", "tar")
MimetypeApplicationZip = registerMimeType("application/zip", "zip")
MimetypeAudioAiff = registerMimeType("audio/aiff", "aiff")
MimetypeAudioAmr = registerMimeType("audio/amr", "amr")
MimetypeAudioApe = registerMimeType("audio/ape", "ape")
MimetypeAudioBasic = registerMimeType("audio/basic", "au")
MimetypeAudioFlac = registerMimeType("audio/flac", "flac")
MimetypeAudioMidi = registerMimeType("audio/midi", "midi")
MimetypeAudioMp4 = registerMimeType("audio/mp4", "mp4")
MimetypeAudioMpeg = registerMimeType("audio/mpeg", "mp3")
MimetypeAudioMusepack = registerMimeType("audio/musepack", "mpc")
MimetypeAudioWav = registerMimeType("audio/wav", "wav")
MimetypeAudioXM4A = registerMimeType("audio/x-m4a", "m4a")
MimetypeFontWoff = registerMimeType("font/woff", "woff")
MimetypeFontWoff2 = registerMimeType("font/woff2", "woff2")
MimetypeImageBmp = registerMimeType("image/bmp", "bmp")
MimetypeImageGif = registerMimeType("image/gif", "gif")
MimetypeImageJpeg = registerMimeType("image/jpeg", "jpg")
MimetypeImagePng = registerMimeType("image/png", "png")
MimetypeImageSvgXml = registerMimeType("image/svg+xml", "svg")
MimetypeImageTiff = registerMimeType("image/tiff", "tiff")
MimetypeImageWebp = registerMimeType("image/webp", "webp")
MimetypeImageXIcon = registerMimeType("image/x-icon", "ico")
MimetypeModelVndColladaXml = registerMimeType("model/vnd.collada+xml", "dae")
MimetypeModelX3DXml = registerMimeType("model/x3d+xml", "x3d")
MimetypeTextHtml = registerMimeType("text/html; charset=utf-8", "html")
MimetypeTextCss = registerMimeType("text/css", "css")
MimetypeTextPlain = registerMimeType("text/plain", "txt")
MimetypeTextRtf = registerMimeType("text/rtf", "rtf")
MimetypeTextXml = registerMimeType("text/xml; charset=utf-8", "xml")
MimetypeTextXLua = registerMimeType("text/x-lua", "lua")
MimetypeTextXPerl = registerMimeType("text/x-perl", "pl")
MimetypeTextXPhp = registerMimeType("text/x-php; charset=utf-8", "php")
MimetypeTextXTcl = registerMimeType("text/x-tcl", "tcl")
MimetypeVideo3GPP = registerMimeType("video/3gpp", "3gp")
MimetypeVideo3GPP2 = registerMimeType("video/3gpp2", "3g2")
MimetypeVideoMp4 = registerMimeType("video/mp4", "mp4")
MimetypeVideoMpeg = registerMimeType("video/mpeg", "mpeg")
MimetypeVideoQuicktime = registerMimeType("video/quicktime", "mov")
MimetypeVideoWebm = registerMimeType("video/webm", "webm")
MimetypeVideoXFlv = registerMimeType("video/x-flv", "flv")
MimetypeVideoXMatroska = registerMimeType("video/x-matroska", "mkv")
MimetypeVideoXMsvideo = registerMimeType("video/x-msvideo", "avi")
)
func registerMimeType(mimeType, ext string) MimetypeExtension {
mt := MimetypeExtension{
MimeType: mimeType,
Ext: ext,
}
Mimetypes[mimeType] = mt
return mt
}
func DetectMimeType(filename string, buf []byte) (MimetypeExtension, error) {
if filename != "" {
ext := filepath.Ext(filename)
if ext != "" {
if strings.HasPrefix(ext, ".") {
ext = ext[1:]
}
ext = strings.ToLower(ext)
for _, mt := range Mimetypes {
if mt.Ext == ext {
return mt, nil
}
}
if buf == nil {
var err error
buf, err = os.ReadFile(filename)
if Error(err) {
return MimetypeApplicationOctetStream, err
}
}
}
}
t, err := filetype.Match(buf)
if t.MIME.Value != "" && err == nil {
return MimetypeExtension{t.MIME.Value, t.Extension}, nil
}
mime := mimetype.Detect(buf)
if mime != nil {
return Mimetypes[mime.String()], nil
}
return MimetypeApplicationOctetStream, fmt.Errorf("cannot detect mime type")
}
func ReadHeader(path string) ([]byte, error) {
byteSlice := make([]byte, MimetypeHeaderLen)
file, err := os.Open(path)
if err != nil {
return byteSlice[0:0], err
}
defer func() {
Error(file.Close())
}()
bytesRead, err := file.Read(byteSlice)
if err != nil {
return byteSlice[0:0], err
}
return byteSlice[:bytesRead], nil
}
func IsImageMimeType(s string) bool {
return strings.HasPrefix(s, "image/")
}