web/cryptpad
2
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Implementing Spreadsheet XLSX import/export using WebAssembly

Browse Source
This commit is contained in:
Ludovic Dubost
2019-12-28 19:06:32 +01:00
parent 89d9f22e0e
commit 7026123bfc
5 changed files with 8602 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
www/common/onlyoffice/inner.js
View File

@@ -730,6 +730,100 @@ define([
});
};
var x2tInitialized = false;
var x2tInit = function(x2t) {
console.log("x2t mount");
// x2t.FS.mount(x2t.MEMFS, {} , '/');
x2t.FS.mkdir('/working');
console.log("x2t mount done");
}
/*
Converting Data
This function converts a data in a specific format to the outputformat
The filename extension needs to represent the input format
Example: fileName=cryptpad.bin outputFormat=xlsx
*/
var x2tConvertDataInternal = function(x2t, data, fileName, outputFormat) {
console.log("Converting Data for " + fileName + " to " + outputFormat);
// writing file to mounted working disk (in memory)
x2t.FS.writeFile('/working/' + fileName, data);
var params = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<TaskQueueDataConvert xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">"
+ "<m_sFileFrom>/working/" + fileName + "</m_sFileFrom>"
+ "<m_sFileTo>/working/" + fileName + "." + outputFormat + "</m_sFileTo>"
+ "<m_bIsNoBase64>false</m_bIsNoBase64>"
+ "</TaskQueueDataConvert>"
// writing params file to mounted working disk (in memory)
x2t.FS.writeFile('/working/params.xml', params);
// running conversion
x2t.ccall("runX2T", ["number"], ["string"], ["/working/params.xml"]);
// reading output file from working disk (in memory)
var result = x2t.FS.readFile('/working/' + fileName + "." + outputFormat);
return result;
}
var x2tSaveAndConvertDataInternal = function(x2t, data, filename, extension, finalFilename) {
var xlsData = x2tConvertDataInternal(x2t, data, filename, extension);
var blob = new Blob([xlsData], {type: "application/bin;charset=utf-8"});
saveAs(blob, finalFilename);
}
var x2tSaveAndConvertData = function(data, filename, extension, finalFilename) {
// Perform the x2t conversion
require(['/common/onlyoffice/x2t/x2t.js'], function() {
var x2t = Module;
x2t.run();
if (x2tInitialized) {
console.log("x2t runtime already initialized");
x2tSaveAndConvertDataInternal(x2t, data, filename, extension, finalFilename);
}
x2t.onRuntimeInitialized = function() {
console.log("x2t in runtime initialized");
// Init x2t js module
x2tInit(x2t);
x2tInitialized = true;
x2tSaveAndConvertDataInternal(x2t, data, filename, extension, finalFilename);
}
});
}
var exportXLSXFile = function() {
var text = getContent();
var suggestion = Title.suggestTitle(Title.defaultTitle);
UI.prompt(Messages.exportPrompt,
Util.fixFileName(suggestion) + '.xlsx', function (filename) {
if (!(typeof(filename) === 'string' && filename)) { return; }
x2tSaveAndConvertData(text, "filename.bin", "xlsx", filename);
});
};
var importXLSXFile = function(content, filename) {
var file = getFileType();
// Perform the x2t conversion
require(['/common/onlyoffice/x2t/x2t.js'], function() {
var x2t = Module;
x2t.run();
if (x2tInitialized) {
console.log("x2t runtime already initialized");
var convertedContent = x2tConvertDataInternal(x2t, new Uint8Array(content), file.title, "bin");
importFile(convertedContent);
}
x2t.onRuntimeInitialized = function() {
console.log("x2t in runtime initialized");
// Init x2t js module
x2tInit(x2t);
x2tInitialized = true;
var convertedContent = x2tConvertDataInternal(x2t, new Uint8Array(content), file.title, "bin");
importFile(convertedContent);
}
});
}
var importFile = function(content) {
// Abort if there is another real user in the channel (history keeper excluded)
var m = metadataMgr.getChannelMembers().slice().filter(function (nId) {
@@ -912,9 +1006,15 @@ define([
var $export = common.createButton('export', true, {}, exportFile);
$export.appendTo($rightside);
var $exportXLSX = common.createButton('export', true, {}, exportXLSXFile);
$exportXLSX.appendTo($rightside);
var $import = common.createButton('import', true, {}, importFile);
$import.appendTo($rightside);
var $importXLSX = common.createButton('import', true, { accept: ["xlsx"], types: ["xlsx"], binary : true }, importXLSXFile);
$importXLSX.appendTo($rightside);
if (common.isLoggedIn()) {
common.createButton('hashtag', true).appendTo($rightside);
}