exceljs
Version:
Excel Workbook Manager - Read and Write xlsx and csv Files.
86 lines (84 loc) • 2.22 kB
JavaScript
;
const BaseXform = require('../base-xform');
const colCache = require('../../../utils/col-cache');
class DefinedNamesXform extends BaseXform {
render(xmlStream, model) {
// <definedNames>
// <definedName name="name">name.ranges.join(',')</definedName>
// <definedName name="_xlnm.Print_Area" localSheetId="0">name.ranges.join(',')</definedName>
// </definedNames>
xmlStream.openNode('definedName', {
name: model.name,
localSheetId: model.localSheetId
});
xmlStream.writeText(model.ranges.join(','));
xmlStream.closeNode();
}
parseOpen(node) {
switch (node.name) {
case 'definedName':
this._parsedName = node.attributes.name;
this._parsedLocalSheetId = node.attributes.localSheetId;
this._parsedText = [];
return true;
default:
return false;
}
}
parseText(text) {
this._parsedText.push(text);
}
parseClose() {
this.model = {
name: this._parsedName,
ranges: extractRanges(this._parsedText.join(''))
};
if (this._parsedLocalSheetId !== undefined) {
this.model.localSheetId = parseInt(this._parsedLocalSheetId, 10);
}
return false;
}
}
function isValidRange(range) {
try {
colCache.decodeEx(range);
return true;
} catch (err) {
return false;
}
}
function extractRanges(parsedText) {
const ranges = [];
let quotesOpened = false;
let last = '';
parsedText.split(',').forEach(item => {
if (!item) {
return;
}
const quotes = (item.match(/'/g) || []).length;
if (!quotes) {
if (quotesOpened) {
last += `${item},`;
} else if (isValidRange(item)) {
ranges.push(item);
}
return;
}
const quotesEven = quotes % 2 === 0;
if (!quotesOpened && quotesEven && isValidRange(item)) {
ranges.push(item);
} else if (quotesOpened && !quotesEven) {
quotesOpened = false;
if (isValidRange(last + item)) {
ranges.push(last + item);
}
last = '';
} else {
quotesOpened = true;
last += `${item},`;
}
});
return ranges;
}
module.exports = DefinedNamesXform;
//# sourceMappingURL=defined-name-xform.js.map