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Fix some xlsx stream read xlsx not in guaranteed order problem #578

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Merged
merged 3 commits into from
Nov 7, 2018
Merged

Fix some xlsx stream read xlsx not in guaranteed order problem #578

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2b8ace1
Fix some xlsx stream read get sharedstring index problem
May 30, 2018
7f18928
read xml in guaranteed order
May 30, 2018
286836b
fix
May 30, 2018
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56 changes: 51 additions & 5 deletions lib/stream/xlsx/workbook-reader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ var WorkbookPropertiesManager = require('../../xlsx/xform/book/workbook-properti
var WorksheetReader = require('./worksheet-reader');
var HyperlinkReader = require('./hyperlink-reader');

var Temp = require('temp');

var WorkbookReader = module.exports = function(options) {
this.options = options = options || {};

Expand All @@ -40,6 +42,9 @@ var WorkbookReader = module.exports = function(options) {

// end of stream check
this.atEnd = false;

Temp.track();
this.waitingWorkSheets = [];
};

utils.inherits(WorkbookReader, events.EventEmitter, {
Expand Down Expand Up @@ -73,6 +78,7 @@ utils.inherits(WorkbookReader, events.EventEmitter, {

zip.on('entry', entry => {
var match, sheetNo;
// console.log(entry.path);
switch (entry.path) {
case '_rels/.rels':
case 'xl/_rels/workbook.xml.rels':
Expand All @@ -91,7 +97,13 @@ utils.inherits(WorkbookReader, events.EventEmitter, {
if (entry.path.match(/xl\/worksheets\/sheet\d+[.]xml/)) {
match = entry.path.match(/xl\/worksheets\/sheet(\d+)[.]xml/);
sheetNo = match[1];
this._parseWorksheet(entry, sheetNo, options);
if (this.sharedStrings) {
this._parseWorksheet(entry, sheetNo, options);
} else {
var stream = Temp.createWriteStream();
this.waitingWorkSheets.push({sheetNo: sheetNo, options: options, path: stream.path});
entry.pipe(stream);
}
} else if (entry.path.match(/xl\/worksheets\/_rels\/sheet\d+[.]xml.rels/)) {
match = entry.path.match(/xl\/worksheets\/_rels\/sheet(\d+)[.]xml.rels/);
sheetNo = match[1];
Expand All @@ -104,11 +116,44 @@ utils.inherits(WorkbookReader, events.EventEmitter, {
});

zip.on('close', () => {
this.emit('end');
this.atEnd = true;
if (!this.readers) {
this.emit('finished');
var self = this;
if (this.waitingWorkSheets.length) {
var currentBook = 0;

var processBooks = function () {
var worksheetInfo = self.waitingWorkSheets[currentBook];
var entry = fs.createReadStream(worksheetInfo.path);

var sheetNo = worksheetInfo.sheetNo;
var options = worksheetInfo.options;
var worksheet = self._parseWorksheet(entry, sheetNo, options);

worksheet.on('finished', function (node) {
++currentBook;
if (currentBook == self.waitingWorkSheets.length) {
Temp.cleanupSync();
// setImmediate(this.emit.bind(this), 'finished');

self.emit('end');
self.atEnd = true;
if (!self.readers) {
self.emit('finished');
}
} else {
setImmediate(processBooks);
}
})
}
setImmediate(processBooks);
} else {
this.emit('end');
this.atEnd = true;
if (!this.readers) {
this.emit('finished');
}
}


});

zip.on('error', err => {
Expand Down Expand Up @@ -204,6 +249,7 @@ utils.inherits(WorkbookReader, events.EventEmitter, {
this.emit('worksheet', worksheetReader);
}
worksheetReader.read(entry, options, this.hyperlinkReaders[sheetNo]);
return worksheetReader;
},
_parseHyperlinks: function(entry, sheetNo, options) {
this._emitEntry(options, {type: 'hyerlinks', id: sheetNo});
Expand Down
3 changes: 2 additions & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,8 @@
"moment": ">=2.19.3",
"node-unzip-2": "^0.2.7",
"promish": ">=5.0.2",
"sax": "^1.2.2"
"sax": "^1.2.2",
"temp": "0.8.3"
},
"devDependencies": {
"@types/node": "*",
Expand Down