forked from sheetjs/sheetjs
SheetJS
44b55c5c56
- jscs linting to check for trailing comma issues (h/t @altkatz) - IE: phased out lazy string indexing in favor of charCodeAt - XLSX: replaced certain operations in hot functions with faster alternatives - updated SSF to 0.7.1 - improved coverage in tests
88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
/* writing feature test -- look for TEST: in comments */
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/* vim: set ts=2: */
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/* original data */
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var data = [
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[1,2,3],
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[true, false, null, "sheetjs"],
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["foo","bar",new Date("2014-02-19T14:30Z"), "0.3"],
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["baz", null, "qux"]
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];
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var ws_name = "SheetJS";
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var wscols = [
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{wch:6},
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{wch:7},
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{wch:10},
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{wch:20}
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];
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console.log("Sheet Name: " + ws_name);
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console.log("Data: "); for(var i=0; i!=data.length; ++i) console.log(data[i]);
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console.log("Columns :"); for(i=0; i!=wscols.length;++i) console.log(wscols[i]);
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/* require XLSX */
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if(typeof XLSX === "undefined") { try { XLSX = require('./'); } catch(e) { XLSX = require('../'); } }
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/* dummy workbook constructor */
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function Workbook() {
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if(!(this instanceof Workbook)) return new Workbook();
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this.SheetNames = [];
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this.Sheets = {};
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}
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var wb = new Workbook();
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/* TODO: date1904 logic */
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function datenum(v, date1904) {
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if(date1904) v+=1462;
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var epoch = Date.parse(v);
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return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
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}
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/* convert an array of arrays in JS to a CSF spreadsheet */
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function sheet_from_array_of_arrays(data, opts) {
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var ws = {};
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var range = {s: {c:10000000, r:10000000}, e: {c:0, r:0 }};
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for(var R = 0; R != data.length; ++R) {
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for(var C = 0; C != data[R].length; ++C) {
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if(range.s.r > R) range.s.r = R;
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if(range.s.c > C) range.s.c = C;
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if(range.e.r < R) range.e.r = R;
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if(range.e.c < C) range.e.c = C;
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var cell = {v: data[R][C] };
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if(cell.v == null) continue;
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var cell_ref = XLSX.utils.encode_cell({c:C,r:R});
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/* TEST: proper cell types and value handling */
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if(typeof cell.v === 'number') cell.t = 'n';
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else if(typeof cell.v === 'boolean') cell.t = 'b';
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else if(cell.v instanceof Date) {
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cell.t = 'n'; cell.z = XLSX.SSF._table[14];
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cell.v = datenum(cell.v);
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}
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else cell.t = 's';
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ws[cell_ref] = cell;
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}
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}
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/* TEST: proper range */
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if(range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
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return ws;
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}
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var ws = sheet_from_array_of_arrays(data);
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/* TEST: add worksheet to workbook */
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wb.SheetNames.push(ws_name);
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wb.Sheets[ws_name] = ws;
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/* TEST: column widths */
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ws['!cols'] = wscols;
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/* write file */
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XLSX.writeFile(wb, 'sheetjs.xlsx');
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