exceljs
Version:
Excel Workbook Manager - Read and Write xlsx and csv Files.
381 lines (347 loc) • 11.2 kB
JavaScript
/**
* Copyright (c) 2015 Guyon Roche
* LICENCE: MIT - please refer to LICENCE file included with this module
* or https://github.com/guyonroche/exceljs/blob/master/LICENSE
*/
'use strict';
var utils = require('../../../utils/utils');
var BaseXform = require('../base-xform');
var Enums = require('../../../doc/enums');
var Range = require('../../../doc/range');
function getValueType(v) {
if (v === null || v === undefined) {
return Enums.ValueType.Null;
} else if (v instanceof String || typeof v === 'string') {
return Enums.ValueType.String;
} else if (typeof v === 'number') {
return Enums.ValueType.Number;
} else if (typeof v === 'boolean') {
return Enums.ValueType.Boolean;
} else if (v instanceof Date) {
return Enums.ValueType.Date;
} else if (v.text && v.hyperlink) {
return Enums.ValueType.Hyperlink;
} else if (v.formula) {
return Enums.ValueType.Formula;
} else if (v.error) {
return Enums.ValueType.Error;
}
throw new Error('I could not understand type of value');
}
function getEffectiveCellType(cell) {
switch (cell.type) {
case Enums.ValueType.Formula:
return getValueType(cell.result);
default:
return cell.type;
}
}
var CellXform = module.exports = function () {};
utils.inherits(CellXform, BaseXform, {
get tag() {
return 'c';
},
prepare: function prepare(model, options) {
var styleId = options.styles.addStyleModel(model.style || {}, getEffectiveCellType(model));
if (styleId) {
model.styleId = styleId;
}
switch (model.type) {
case Enums.ValueType.String:
if (options.sharedStrings) {
model.ssId = options.sharedStrings.add(model.value);
}
break;
case Enums.ValueType.Date:
if (options.date1904) {
model.date1904 = true;
}
break;
case Enums.ValueType.Hyperlink:
if (options.sharedStrings) {
model.ssId = options.sharedStrings.add(model.text);
}
options.hyperlinks.push({
address: model.address,
target: model.hyperlink
});
break;
case Enums.ValueType.Merge:
options.merges.add(model);
break;
case Enums.ValueType.Formula:
if (options.date1904) {
// in case valueType is date
model.date1904 = true;
}
if (model.formula) {
options.formulae[model.address] = model;
} else if (model.sharedFormula) {
var master = options.formulae[model.sharedFormula];
if (!master) {
throw new Error('Shared Formula master must exist above and or left of clone');
}
if (master.si !== undefined) {
model.si = master.si;
master.ref.expandToAddress(model.address);
} else {
model.si = master.si = options.siFormulae++;
master.ref = new Range(master.address, model.address);
}
}
break;
default:
break;
}
},
renderFormula: function renderFormula(xmlStream, model) {
var attrs = null;
if (model.ref) {
attrs = {
t: 'shared',
ref: model.ref.range,
si: model.si
};
} else if (model.si !== undefined) {
attrs = {
t: 'shared',
si: model.si
};
}
switch (getValueType(model.result)) {
case Enums.ValueType.Null:
// ?
xmlStream.leafNode('f', attrs, model.formula);
break;
case Enums.ValueType.String:
// oddly, formula results don't ever use shared strings
xmlStream.addAttribute('t', 'str');
xmlStream.leafNode('f', attrs, model.formula);
xmlStream.leafNode('v', null, model.result);
break;
case Enums.ValueType.Number:
xmlStream.leafNode('f', attrs, model.formula);
xmlStream.leafNode('v', null, model.result);
break;
case Enums.ValueType.Boolean:
xmlStream.addAttribute('t', 'b');
xmlStream.leafNode('f', attrs, model.formula);
xmlStream.leafNode('v', null, model.result ? 1 : 0);
break;
case Enums.ValueType.Error:
xmlStream.addAttribute('t', 'e');
xmlStream.leafNode('f', attrs, model.formula);
xmlStream.leafNode('v', null, model.result.error);
break;
case Enums.ValueType.Date:
xmlStream.leafNode('f', attrs, model.formula);
xmlStream.leafNode('v', null, utils.dateToExcel(model.result, model.date1904));
break;
// case Enums.ValueType.Hyperlink: // ??
// case Enums.ValueType.Formula:
default:
throw new Error('I could not understand type of value');
}
},
render: function render(xmlStream, model) {
if (model.type === Enums.ValueType.Null && !model.styleId) {
// if null and no style, exit
return;
}
xmlStream.openNode('c');
xmlStream.addAttribute('r', model.address);
if (model.styleId) {
xmlStream.addAttribute('s', model.styleId);
}
switch (model.type) {
case Enums.ValueType.Null:
break;
case Enums.ValueType.Number:
xmlStream.leafNode('v', null, model.value);
break;
case Enums.ValueType.Boolean:
xmlStream.addAttribute('t', 'b');
xmlStream.leafNode('v', null, model.value ? '1' : '0');
break;
case Enums.ValueType.Error:
xmlStream.addAttribute('t', 'e');
xmlStream.leafNode('v', null, model.value.error);
break;
case Enums.ValueType.String:
if (model.ssId !== undefined) {
xmlStream.addAttribute('t', 's');
xmlStream.leafNode('v', null, model.ssId);
} else {
xmlStream.addAttribute('t', 'str');
xmlStream.leafNode('v', null, model.value);
}
break;
case Enums.ValueType.Date:
xmlStream.leafNode('v', null, utils.dateToExcel(model.value, model.date1904));
break;
case Enums.ValueType.Hyperlink:
if (model.ssId !== undefined) {
xmlStream.addAttribute('t', 's');
xmlStream.leafNode('v', null, model.ssId);
} else {
xmlStream.addAttribute('t', 'str');
xmlStream.leafNode('v', null, model.text);
}
break;
case Enums.ValueType.Formula:
this.renderFormula(xmlStream, model);
break;
case Enums.ValueType.Merge:
// nothing to add
break;
default:
break;
}
xmlStream.closeNode(); // </c>
},
parseOpen: function parseOpen(node) {
switch (node.name) {
case 'c':
// var address = colCache.decodeAddress(node.attributes.r);
var model = this.model = {
address: node.attributes.r
};
this.t = node.attributes.t;
if (node.attributes.s) {
model.styleId = parseInt(node.attributes.s, 10);
}
return true;
case 'f':
this.currentNode = 'f';
this.model.si = node.attributes.si;
if (node.attributes.t === 'shared') {
this.model.sharedFormula = true;
}
this.model.ref = node.attributes.ref;
return true;
case 'v':
this.currentNode = 'v';
return true;
default:
return false;
}
},
parseText: function parseText(text) {
switch (this.currentNode) {
case 'f':
this.model.formula = this.model.formula ? this.model.formula + text : text;
break;
case 'v':
this.model.value = this.model.value ? this.model.value + text : text;
break;
default:
break;
}
},
parseClose: function parseClose(name) {
switch (name) {
case 'c':
var model = this.model;
// first guess on cell type
if (model.formula || model.sharedFormula) {
model.type = Enums.ValueType.Formula;
if (model.value) {
if (this.t === 'str') {
model.result = utils.xmlDecode(model.value);
} else if (this.t === 'b') {
model.result = parseInt(model.value, 10) !== 0;
} else if (this.t === 'e') {
model.result = { error: model.value };
} else {
model.result = parseFloat(model.value);
}
model.value = undefined;
}
} else if (model.value !== undefined) {
switch (this.t) {
case 's':
model.type = Enums.ValueType.String;
model.value = parseInt(model.value, 10);
break;
case 'str':
model.type = Enums.ValueType.String;
model.value = utils.xmlDecode(model.value);
break;
case 'b':
model.type = Enums.ValueType.Boolean;
model.value = parseInt(model.value, 10) !== 0;
break;
case 'e':
model.type = Enums.ValueType.Error;
model.value = { error: model.value };
break;
default:
model.type = Enums.ValueType.Number;
model.value = parseFloat(model.value);
break;
}
} else if (model.styleId) {
model.type = Enums.ValueType.Null;
} else {
model.type = Enums.ValueType.Merge;
}
return false;
case 'f':
case 'v':
this.currentNode = undefined;
return true;
default:
return false;
}
},
reconcile: function reconcile(model, options) {
var style = model.styleId && options.styles.getStyleModel(model.styleId);
if (style) {
model.style = style;
}
if (model.styleId !== undefined) {
model.styleId = undefined;
}
switch (model.type) {
case Enums.ValueType.String:
if (typeof model.value === 'number') {
model.value = options.sharedStrings.getString(model.value);
}
if (model.value.richText) {
model.type = Enums.ValueType.RichText;
}
break;
case Enums.ValueType.Number:
if (style && utils.isDateFmt(style.numFmt)) {
model.type = Enums.ValueType.Date;
model.value = utils.excelToDate(model.value, options.date1904);
}
break;
case Enums.ValueType.Formula:
if (model.result !== undefined && style && utils.isDateFmt(style.numFmt)) {
model.result = utils.excelToDate(model.result, options.date1904);
}
if (model.sharedFormula) {
if (model.formula) {
options.formulae[model.si] = model;
delete model.sharedFormula;
} else {
model.sharedFormula = options.formulae[model.si].address;
}
delete model.si;
}
break;
default:
break;
}
// look for hyperlink
var hyperlink = options.hyperlinkMap[model.address];
if (hyperlink) {
model.type = Enums.ValueType.Hyperlink;
model.text = model.value;
model.value = undefined;
model.hyperlink = hyperlink;
}
}
});
//# sourceMappingURL=cell-xform.js.map