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server/Common/sources/formatchecker.js
Sergey Konovalov f7a2c135b2 [feature] Save docxf and oform to extended pdf
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/*
* (c) Copyright Ascensio System SIA 2010-2023
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
'use strict';
var path = require('path');
var constants = require('./constants');
const {open} = require("node:fs/promises");
function getImageFormatBySignature(buffer) {
var length = buffer.length;
//1000 for svg(xml header and creator comment)
var startText = buffer.toString('ascii', 0, 1000);
//jpeg
// Hex: FF D8 FF
if ((3 <= length) && (0xFF == buffer[0]) && (0xD8 == buffer[1]) && (0xFF == buffer[2])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_JPG;
}
//bmp ( http://ru.wikipedia.org/wiki/BMP )
//Hex: 42 4D
//ASCII: BM
//Hex (position 6) : 00 00
//Hex (position 26): 01 00
//Hex (position 28): 00 || 01 || 04 || 08 || 10 || 18 || 20
//Hex (position 29): 00
//Hex (position 30): 00 || 01 || 02 || 03 || 04 || 05
//Hex (position 31): 00 00 00
if ((34 <= length) && (0x42 == buffer[0]) && (0x4D == buffer[1]) && (0x00 == buffer[6]) && (0x00 == buffer[7]) &&
(0x01 == buffer[26]) && (0x00 == buffer[27]) && ((0x00 == buffer[28]) || (0x01 == buffer[28]) ||
(0x04 == buffer[28]) || (0x08 == buffer[28]) || (0x10 == buffer[28]) || (0x18 == buffer[28]) ||
(0x20 == buffer[28])) && (0x00 == buffer[29]) && ((0x00 == buffer[30]) || (0x01 == buffer[30]) ||
(0x02 == buffer[30]) || (0x03 == buffer[30]) || (0x04 == buffer[30]) || (0x05 == buffer[30])) &&
(0x00 == buffer[31]) && (0x00 == buffer[32]) && (0x00 == buffer[33])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_BMP;
}
//gif
//Hex: 47 49 46 38
//ASCII: GIF8
//or for GIF87a...
//Hex: 47 49 46 38 37 61
//ASCII: GIF87a
//or for GIF89a...
//Hex: 47 49 46 38 39 61
//ASCII: GIF89a
if (0 == startText.indexOf('GIF8')) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_GIF;
}
if (0 == startText.indexOf('GIF87a') || 0 == startText.indexOf('GIF89a')) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_GIF;
}
//png
//Hex: 89 50 4E 47 0D 0A 1A 0A 00 00 00 0D 49 48 44 52
//ASCII: .PNG........IHDR
if ((16 <= length) && (0x89 == buffer[0]) && (0x50 == buffer[1]) && (0x4E == buffer[2]) && (0x47 == buffer[3]) &&
(0x0D == buffer[4]) && (0x0A == buffer[5]) && (0x1A == buffer[6]) && (0x0A == buffer[7]) &&
(0x00 == buffer[8]) && (0x00 == buffer[9]) && (0x00 == buffer[10]) && (0x0D == buffer[11]) &&
(0x49 == buffer[12]) && (0x48 == buffer[13]) && (0x44 == buffer[14]) && (0x52 == buffer[15])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PNG;
}
//CR2
//Hex: 49 49 2A 00 10 00 00 00 43 52
//ASCII: II*.....CR
if ((10 <= length) && (0x49 == buffer[0]) && (0x49 == buffer[1]) && (0x2A == buffer[2]) &&
(0x00 == buffer[3]) && (0x10 == buffer[4]) && (0x00 == buffer[5]) && (0x00 == buffer[6]) &&
(0x00 == buffer[7]) && (0x43 == buffer[8]) && (0x52 == buffer[9])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_CR2;
}
//tiff
//Hex: 49 49 2A 00
//ASCII:
//or for big endian
//Hex: 4D 4D 00 2A
//ASCII: MM.*
//or for little endian
//Hex: 49 49 2A 00
//ASCII: II*
if (4 <= length) {
if (((0x49 == buffer[0]) && (0x49 == buffer[1]) && (0x2A == buffer[2]) && (0x00 == buffer[3])) ||
((0x4D == buffer[0]) && (0x4D == buffer[1]) && (0x00 == buffer[2]) && (0x2A == buffer[3])) ||
((0x49 == buffer[0]) && (0x49 == buffer[1]) && (0x2A == buffer[2]) && (0x00 == buffer[3]))) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_TIFF;
}
}
//wmf
//Hex: D7 CD C6 9A 00 00
//or for Windows 3.x
//Hex: 01 00 09 00 00 03
if (6 <= length) {
if (((0xD7 == buffer[0]) && (0xCD == buffer[1]) && (0xC6 == buffer[2]) && (0x9A == buffer[3]) &&
(0x00 == buffer[4]) && (0x00 == buffer[5])) || ((0x01 == buffer[0]) && (0x00 == buffer[1]) &&
(0x09 == buffer[2]) && (0x00 == buffer[3]) && (0x00 == buffer[4]) && (0x03 == buffer[5]))) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_WMF;
}
}
//emf ( http://wvware.sourceforge.net/caolan/ora-wmf.html )
//Hex: 01 00 00 00
//Hex (position 40): 20 45 4D 46
if ((44 <= length) && (0x01 == buffer[0]) && (0x00 == buffer[1]) && (0x00 == buffer[2]) && (0x00 == buffer[3]) &&
(0x20 == buffer[40]) && (0x45 == buffer[41]) && (0x4D == buffer[42]) && (0x46 == buffer[43])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_EMF;
}
//pcx ( http://www.fileformat.info/format/pcx/corion.htm )
//Hex (position 0): 0A
//Hex (position 1): 00 || 01 || 02 || 03 || 04 || 05
//Hex (position 3): 01 || 02 || 04 || 08 ( Bytes per pixel )
if ((4 <= length) && (0x0A == buffer[0]) && (0x00 == buffer[1] || 0x01 == buffer[1] ||
0x02 == buffer[1] || 0x03 == buffer[1] || 0x04 == buffer[1] || 0x05 == buffer[1]) &&
(0x01 == buffer[3] || 0x02 == buffer[3] || 0x04 == buffer[3] || 0x08 == buffer[3])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PCX;
}
//tga ( http://www.fileformat.info/format/tga/corion.htm )
//DATA TYPE 1-COLOR-MAPPED IMAGES : Hex (position 1) : 01 01
//DATA TYPE 2-TRUE-COLOR IMAGES : Hex (position 1) : 00 02
//DATA TYPE 3-BLACK AND WHITE(UNMAPPED) IMAGES : Hex (position 1) : 00 03
//DATA TYPE 9-RUN-LENGTH ENCODED(RLE),COLOR-MAPPED IMAGES : Hex (position 1) : 01 09
//DATA TYPE 10-RUN-LENGTH ENCODED(RLE),TRUE-COLOR IMAGES : Hex (position 1) : 00 0A
//DATA TYPE 11-RUN-LENGTH ENCODED(RLE),BLACK AND WHITE IMAGES : Hex (position 1) : 00 0B
// + Bytes per pixel : Hex (position 16): 0x08 || 0x10 || 0x18 || 0x20
if ((17 <= length) && ((0x01 == buffer[1] && 0x01 == buffer[2]) || (0x00 == buffer[1] && 0x02 == buffer[2]) ||
(0x00 == buffer[1] && 0x03 == buffer[2]) || (0x01 == buffer[1] && 0x09 == buffer[2]) ||
(0x00 == buffer[1] && 0x0A == buffer[2]) || (0x00 == buffer[1] && 0x0B == buffer[2])) &&
(0x08 == buffer[16] || 0x10 == buffer[16] || 0x18 == buffer[16] || 0x20 == buffer[16])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_TGA;
}
//ras
//Hex: 59 A6 6A 95
//ASCII: Y
if ((4 <= length) && (0x59 == buffer[0]) && (0xA6 == buffer[1]) && (0x6A == buffer[2]) && (0x95 == buffer[3])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_RAS;
}
//ipod
//(None or Unknown)
//psd
//Hex: 38 42 50 53 00 01 00 00 00 00 00 00 00
//ASCII: 8BPS
if ((13 <= length) && (0x38 == buffer[0]) && (0x42 == buffer[1]) && (0x50 == buffer[2]) &&
(0x53 == buffer[3]) && (0x00 == buffer[4]) && (0x01 == buffer[5]) && (0x00 == buffer[6]) &&
(0x00 == buffer[7]) && (0x00 == buffer[8]) && (0x00 == buffer[9]) && (0x00 == buffer[10]) &&
(0x00 == buffer[11]) && (0x00 == buffer[12])) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PSD;
}
//ico
//Hex: 00 00 01 00
if (4 <= length && 0x00 == buffer[0] && 0x00 == buffer[1] && 0x01 == buffer[2] && 0x00 == buffer[3]) {
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_ICO;
}
//svg
//todo sax parser
if (-1 !== startText.indexOf('<svg')) {
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_SVG;
}
return constants.AVS_OFFICESTUDIO_FILE_UNKNOWN;
}
exports.getFormatFromString = function(ext) {
switch (ext.toLowerCase()) {
case 'docx':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCX;
case 'doc':
case 'wps':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOC;
case 'odt':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_ODT;
case 'rtf':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_RTF;
case 'txt':
case 'xml':
case 'xslt':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_TXT;
case 'htm':
case 'html':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_HTML;
case 'mht':
case 'mhtml':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_MHT;
case 'epub':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_EPUB;
case 'fb2':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_FB2;
case 'mobi':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_MOBI;
case 'docm':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCM;
case 'dotx':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTX;
case 'dotm':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTM;
case 'fodt':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_ODT_FLAT;
case 'ott':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OTT;
case 'oform':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OFORM;
case 'docxf':
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCXF;
case 'pptx':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTX;
case 'ppt':
case 'dps':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPT;
case 'odp':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_ODP;
case 'ppsx':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSX;
case 'pptm':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTM;
case 'ppsm':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSM;
case 'potx':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTX;
case 'potm':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTM;
case 'fodp':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_ODP_FLAT;
case 'otp':
return constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_OTP;
case 'xlsx':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSX;
case 'xls':
case 'et':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLS;
case 'ods':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_ODS;
case 'csv':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_CSV;
case 'xlsm':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSM;
case 'xltx':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTX;
case 'xltm':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTM;
case 'xltb':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSB;
case 'fods':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_ODS_FLAT;
case 'ots':
return constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_OTS;
case 'jpeg':
case 'jpe':
case 'jpg':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_JPG;
case 'tif':
case 'tiff':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_TIFF;
case 'tga':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_TGA;
case 'gif':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_GIF;
case 'png':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PNG;
case 'emf':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_EMF;
case 'wmf':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_WMF;
case 'bmp':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_BMP;
case 'cr2':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_CR2;
case 'pcx':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PCX;
case 'ras':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_RAS;
case 'psd':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_PSD;
case 'ico':
return constants.AVS_OFFICESTUDIO_FILE_IMAGE_ICO;
case 'pdf':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_PDF;
case 'pdfa':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_PDFA;
case 'swf':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_SWF;
case 'djvu':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_DJVU;
case 'xps':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_XPS;
case 'svg':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_SVG;
case 'htmlr':
return constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_HTMLR;
case 'doct':
return constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_DOCY;
case 'xlst':
return constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_XLSY;
case 'pptt':
return constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_PPTY;
case 'ooxml':
return constants.AVS_OFFICESTUDIO_FILE_OTHER_OOXML;
case 'odf':
return constants.AVS_OFFICESTUDIO_FILE_OTHER_ODF;
default:
return constants.AVS_OFFICESTUDIO_FILE_UNKNOWN;
}
};
exports.getStringFromFormat = function(format) {
switch (format) {
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCX:
return 'docx';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOC:
return 'doc';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_ODT:
return 'odt';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_RTF:
return 'rtf';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_TXT:
return 'txt';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_HTML:
return 'html';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_MHT:
return 'mht';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_EPUB:
return 'epub';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_FB2:
return 'fb2';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_MOBI:
return 'mobi';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCM:
return 'docm';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTX:
return 'dotx';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTM:
return 'dotm';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_ODT_FLAT:
return 'fodt';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OTT:
return 'ott';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOC_FLAT:
return 'doc';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCX_FLAT:
return 'docx';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_HTML_IN_CONTAINER:
return 'doc';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCX_PACKAGE:
return 'xml';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OFORM:
return 'oform';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCXF:
return 'docxf';
case constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OFORM_PDF:
return 'pdf';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTX:
return 'pptx';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPT:
return 'ppt';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_ODP:
return 'odp';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSX:
return 'ppsx';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTM:
return 'pptm';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSM:
return 'ppsm';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTX:
return 'potx';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTM:
return 'potm';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_ODP_FLAT:
return 'fodp';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_OTP:
return 'otp';
case constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTX_PACKAGE:
return 'xml';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSX:
return 'xlsx';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLS:
return 'xls';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_ODS:
return 'ods';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_CSV:
return 'csv';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSM:
return 'xlsm';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTX:
return 'xltx';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTM:
return 'xltm';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSB:
return 'xlsb';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_ODS_FLAT:
return 'fods';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_OTS:
return 'ots';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSX_FLAT:
return 'xlsx';
case constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSX_PACKAGE:
return 'xml';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_PDF:
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_PDFA:
return 'pdf';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_SWF:
return 'swf';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_DJVU:
return 'djvu';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_XPS:
return 'xps';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_SVG:
return 'svg';
case constants.AVS_OFFICESTUDIO_FILE_CROSSPLATFORM_HTMLR:
return 'htmlr';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_HTMLZIP:
return 'zip';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_JSON:
return 'json';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE:
return 'zip';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_JPG:
return 'jpg';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_TIFF:
return 'tiff';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_TGA:
return 'tga';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_GIF:
return 'gif';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_PNG:
return 'png';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_EMF:
return 'emf';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_WMF:
return 'wmf';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_BMP:
return 'bmp';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_CR2:
return 'cr2';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_PCX:
return 'pcx';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_RAS:
return 'ras';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_PSD:
return 'psd';
case constants.AVS_OFFICESTUDIO_FILE_IMAGE_ICO:
return 'ico';
case constants.AVS_OFFICESTUDIO_FILE_CANVAS_WORD:
case constants.AVS_OFFICESTUDIO_FILE_CANVAS_SPREADSHEET:
case constants.AVS_OFFICESTUDIO_FILE_CANVAS_PRESENTATION:
return 'bin';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_OLD_DOCUMENT:
case constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_DOCY:
return 'doct';
case constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_XLSY:
return 'xlst';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_OLD_PRESENTATION:
case constants.AVS_OFFICESTUDIO_FILE_OTHER_OLD_DRAWING:
case constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_PPTY:
return 'pptt';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_OOXML:
return 'ooxml';
case constants.AVS_OFFICESTUDIO_FILE_OTHER_ODF:
return 'odf';
default:
return '';
}
};
exports.getImageFormat = function(ctx, buffer) {
var format = constants.AVS_OFFICESTUDIO_FILE_UNKNOWN;
try {
//signature
format = getImageFormatBySignature(buffer);
}
catch (e) {
ctx.logger.error('error getImageFormat: %s', e.stack);
}
return format;
};
exports.isDocumentFormat = function(format) {
return 0 !== (format & constants.AVS_OFFICESTUDIO_FILE_DOCUMENT) ||
format === constants.AVS_OFFICESTUDIO_FILE_CANVAS_WORD ||
format === constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_DOCY;
};
exports.isSpreadsheetFormat = function(format) {
return 0 !== (format & constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET) ||
format === constants.AVS_OFFICESTUDIO_FILE_CANVAS_SPREADSHEET ||
format === constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_XLSY;
};
exports.isPresentationFormat = function(format) {
return 0 !== (format & constants.AVS_OFFICESTUDIO_FILE_PRESENTATION) ||
format === constants.AVS_OFFICESTUDIO_FILE_CANVAS_PRESENTATION ||
format === constants.AVS_OFFICESTUDIO_FILE_TEAMLAB_PPTY;
};
exports.isOOXFormat = function(format) {
return constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCX === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCM === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTX === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOTM === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OFORM === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_DOCXF === format
|| constants.AVS_OFFICESTUDIO_FILE_DOCUMENT_OFORM_PDF === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTX === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSX === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPTM === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_PPSM === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTX === format
|| constants.AVS_OFFICESTUDIO_FILE_PRESENTATION_POTM === format
|| constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSX === format
|| constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLSM === format
|| constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTX === format
|| constants.AVS_OFFICESTUDIO_FILE_SPREADSHEET_XLTM === format;
};
function getDocumentFormatBySignature(buffer) {
if (!buffer) {
return constants.AVS_OFFICESTUDIO_FILE_UNKNOWN;
}
let text = buffer.toString("latin1");
// Check for binary DOCT format.
if (4 <= text.length && text[0] === 'D' && text[1] === 'O' && text[2] === 'C' && text[3] === 'Y') {
return constants.AVS_OFFICESTUDIO_FILE_CANVAS_WORD;
}
// Check for binary XLST format
if (4 <= text.length && text[0] === 'X' && text[1] === 'L' && text[2] === 'S' && text[3] === 'Y') {
return constants.AVS_OFFICESTUDIO_FILE_CANVAS_SPREADSHEET;
}
// Check for binary PPTT format
if (4 <= text.length && text[0] === 'P' && text[1] === 'P' && text[2] === 'T' && text[3] === 'Y') {
return constants.AVS_OFFICESTUDIO_FILE_CANVAS_PRESENTATION;
}
// Unknown format
return constants.AVS_OFFICESTUDIO_FILE_UNKNOWN;
};
async function getDocumentFormatByFile(file) {
let firstBytesLen = 100;
let buffer;
let fd;
try {
fd = await open(file, 'r');
const stream = fd.createReadStream({ start: 0, end: firstBytesLen });
let chunks = [];
for await (const chunk of stream) {
chunks.push(Buffer.from(chunk));
}
buffer = Buffer.concat(chunks);
} finally {
await fd?.close();
}
return getDocumentFormatBySignature(buffer);
};
exports.getDocumentFormatBySignature = getDocumentFormatBySignature;
exports.getDocumentFormatByFile = getDocumentFormatByFile
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