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image_util.go
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image_util.go
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// Copyright 2022 Teamgram Authors
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: teamgramio (teamgram.io@gmail.com)
//
package model
import (
"path"
"strings"
"github.com/teamgram/proto/mtproto"
// "github.com/teamgram/teamgram-server/model"
)
func GetFileExtName(filePath string) string {
var ext = path.Ext(filePath)
if ext == "" {
ext = "partial"
}
return strings.ToLower(ext)
}
/*
storage.fileUnknown#aa963b05 = storage.FileType;
storage.filePartial#40bc6f52 = storage.FileType;
storage.fileJpeg#7efe0e = storage.FileType;
storage.fileGif#cae1aadf = storage.FileType;
storage.filePng#a4f63c0 = storage.FileType;
storage.filePdf#ae1e508d = storage.FileType;
storage.fileMp3#528a0677 = storage.FileType;
storage.fileMov#4b09ebbc = storage.FileType;
storage.fileMp4#b3cea0e4 = storage.FileType;
storage.fileWebp#1081464c = storage.FileType;
*/
var (
storageFileUnknown = mtproto.MakeTLStorageFileUnknown(nil).To_Storage_FileType()
storageFilePartial = mtproto.MakeTLStorageFilePartial(nil).To_Storage_FileType()
storageFileJpeg = mtproto.MakeTLStorageFileJpeg(nil).To_Storage_FileType()
storageFileGif = mtproto.MakeTLStorageFileGif(nil).To_Storage_FileType()
storageFilePng = mtproto.MakeTLStorageFilePng(nil).To_Storage_FileType()
storageFilePdf = mtproto.MakeTLStorageFilePdf(nil).To_Storage_FileType()
storageFileMp3 = mtproto.MakeTLStorageFileMp3(nil).To_Storage_FileType()
storageFileMov = mtproto.MakeTLStorageFileMov(nil).To_Storage_FileType()
storageFileMp4 = mtproto.MakeTLStorageFileMp4(nil).To_Storage_FileType()
storageFileWebp = mtproto.MakeTLStorageFileWebp(nil).To_Storage_FileType()
)
var (
ImageExtensions = [5]string{".jpg", ".jpeg", ".gif", ".bmp", ".png"}
ImageMimeTypes = map[string]string{".jpg": "image/jpeg", ".jpeg": "image/jpeg", ".gif": "image/gif", ".bmp": "image/bmp", ".png": "image/png", ".tiff": "image/tiff"}
)
func GetStorageFileTypeConstructor(extName string) int32 {
var c mtproto.TLConstructor
switch extName {
case ".partial":
c = mtproto.CRC32_storage_filePartial
case ".jpeg", ".jpg":
c = mtproto.CRC32_storage_fileJpeg
case ".gif":
c = mtproto.CRC32_storage_fileGif
case ".png":
c = mtproto.CRC32_storage_filePng
case ".pdf":
c = mtproto.CRC32_storage_filePdf
case ".mp3":
c = mtproto.CRC32_storage_fileMp3
case ".mov":
c = mtproto.CRC32_storage_fileMov
case ".mp4":
c = mtproto.CRC32_storage_fileMp4
case ".webp":
c = mtproto.CRC32_storage_fileWebp
default:
c = mtproto.CRC32_storage_filePartial
}
return int32(c)
}
func MakeStorageFileType(c int32) *mtproto.Storage_FileType {
switch mtproto.TLConstructor(c) {
case mtproto.CRC32_storage_filePartial:
return storageFilePartial
case mtproto.CRC32_storage_fileJpeg:
return storageFileJpeg
case mtproto.CRC32_storage_fileGif:
return storageFileGif
case mtproto.CRC32_storage_filePng:
return storageFilePng
case mtproto.CRC32_storage_filePdf:
return storageFilePdf
case mtproto.CRC32_storage_fileMp3:
return storageFileMp3
case mtproto.CRC32_storage_fileMov:
return storageFileMov
case mtproto.CRC32_storage_fileMp4:
return storageFileMp4
case mtproto.CRC32_storage_fileWebp:
return storageFileWebp
default:
return storageFileUnknown
}
}
func IsFileExtImage(ext string) bool {
ext = strings.ToLower(ext)
for _, imgExt := range ImageExtensions {
if ext == imgExt {
return true
}
}
return false
}
func GetImageMimeType(ext string) string {
ext = strings.ToLower(ext)
if len(ImageMimeTypes[ext]) == 0 {
return "image"
} else {
return ImageMimeTypes[ext]
}
}
func GetMimeTypeByStorageFileTyp(t *mtproto.Storage_FileType) string {
var ext = "partial"
switch t.GetPredicateName() {
case mtproto.Predicate_storage_filePartial:
ext = "partial"
case mtproto.Predicate_storage_fileJpeg:
ext = "jpeg"
case mtproto.Predicate_storage_fileGif:
ext = "gif"
case mtproto.Predicate_storage_filePng:
ext = "png"
case mtproto.Predicate_storage_filePdf:
ext = "pdf"
case mtproto.Predicate_storage_fileMp3:
ext = "mp3"
case mtproto.Predicate_storage_fileMov:
ext = "mov"
case mtproto.Predicate_storage_fileMp4:
ext = "mp4"
case mtproto.Predicate_storage_fileWebp:
ext = "webp"
case mtproto.Predicate_storage_fileUnknown:
ext = "partial"
}
return mtproto.GuessMimeTypeByFileExtension(ext)
}