initial check in

Author: Ber-lin Lai

.gitignore

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+/example/node_modules
+/node_modules

Readme.md

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+# excel-export #
+
+A simple module for exporting data set to Excel xlsx file.
+
+## Using excel-export ##
+Setup configuration object before passing in the execute method. **cols** is an array for column definition. Column definition should have caption and type properties. Supported valid types are string, date, bool and number. **rows** is the data to be export. It is an Array of Array (row). Each row should be the same length of cols. 
+
+ var express = require('express');
+var nodeExcel = require('excel-export');
+var app = express();
+
+app.get('/Excel', function(req, res){
+	var conf ={};
+	conf.cols = [
+{caption:'string', type:'string'},
+{caption:'date', type:'date'},
+{caption:'bool', type:'bool'},
+{caption:'number', type:'number'}
+	];
+	conf.rows = [
+['pi', (new Date(2013, 4, 1)).getJulian(), true, 3.14],
+["e", (new Date(2012, 4, 1)).getJulian(), false, 2.7182]
+	];
+	var result = nodeExcel.execute(conf);
+	res.setHeader('Content-Type', 'application/vnd.openxmlformats');
+	res.setHeader("Content-Disposition", "attachment; filename=" + "Report.xlsx");
+	res.end(result, 'binary');
+});
+
+app.listen(3000);
+console.log('Listening on port 3000');

example/app.js

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+var express = require('express');
+var nodeExcel = require('../index');
+var app = express();
+
+app.get('/Excel', function(req, res){
+ var conf ={};
+ conf.cols = [
+{caption:'string', type:'string'},
+{caption:'date', type:'date'},
+{caption:'bool', type:'bool'},
+{caption:'number', type:'number'}
+ ];
+ conf.rows = [
+['pi', (new Date(2013, 4, 1)).getJulian(), true, 3.14],
+["e", (new Date(2012, 4, 1)).getJulian(), false, 2.7182]
+ ];
+ var result = nodeExcel.execute(conf);
+ res.setHeader('Content-Type', 'application/vnd.openxmlformats');
+ res.setHeader("Content-Disposition", "attachment; filename=" + "Report.xlsx");
+ res.end(result, 'binary');
+});
+
+app.listen(3000);
+console.log('Listening on port 3000');

example/package.json

@@ -0,0 +1,10 @@
+{
+ "name": "Excel-export",
+ "description": "Node Excel Export test app",
+ "version": "0.0.1",
+ "private": true,
+ "dependencies": {
+ "express": "3.x",
+ "node-zip":""
+ }
+}

index.js

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+require('node-zip');
+
+Date.prototype.getJulian = function() {
+return Math.floor((this / 86400000) -
+(this.getTimezoneOffset()/1440) + 2440587.5);
+}
+
+var templateXLSX = "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+var sheetFront = '<?xml version="1.0" encoding="utf-8"?><x:worksheet xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:x="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><x:sheetPr><x:outlinePr summaryBelow="1" summaryRight="1" /></x:sheetPr><x:sheetViews><x:sheetView tabSelected="0" workbookViewId="0" /></x:sheetViews><x:sheetFormatPr defaultRowHeight="15" /><x:sheetData>';
+var sheetBack = '</x:sheetData><x:printOptions horizontalCentered="0" verticalCentered="0" headings="0" gridLines="0" /><x:pageMargins left="0.75" right="0.75" top="0.75" bottom="0.5" header="0.5" footer="0.75" /><x:pageSetup paperSize="1" scale="100" pageOrder="downThenOver" orientation="default" blackAndWhite="0" draft="0" cellComments="none" errors="displayed" /><x:headerFooter /><x:tableParts count="0" /></x:worksheet>';
+var sharedStringsFront = '<?xml version="1.0" encoding="UTF-8"?><x:sst xmlns:x="http://schemas.openxmlformats.org/spreadsheetml/2006/main" uniqueCount="$count" count="$count">';
+var sharedStringsBack = '</x:sst>';
+var shareStrings;
+
+exports.executeAsync = function(config, callBack){
+return process.nextTick(function(){
+var r = exports.execute(config);
+callBack(r);
+});
+}
+
+exports.execute = function(config){
+var cols = config.cols,
+data = config.rows;
+
+var xlsx = new JSZip(templateXLSX, { base64: true, checkCRC32: false }),
+sheet = xlsx.file("xl/worksheets/sheet.xml"),
+sharedStringsXml = xlsx.file("xl/sharedStrings.xml"),
+rows = "",
+row ="";
+
+shareStrings = new Array();
+//first row for column caption
+row = '<x:row r="1" spans="1:'+ cols.length + '">';
+for (var k=0; k < cols.length; k++)
+{
+row = row + addStringCol(getColumnLetter(k+1)+1, cols[k].caption);
+}
+row = row + '</x:row>';
+rows = rows + row;
+
+//fill in data
+for (var i=0;i<data.length;i++)
+{
+var r = data[i], currRow = i+2;
+row = '<x:row r="'+currRow+'" spans="1:'+ cols.length + '">';
+for (var j=0; j<cols.length; j++)
+{
+switch(cols[j].type)
+{
+case 'number':
+row = row + addNumberCol(getColumnLetter(j+1)+currRow, r[j]);
+break;
+case 'date':
+row = row + addDateCol(getColumnLetter(j+1)+currRow, r[j]);
+break;
+case 'bool':
+row = row + addBoolCol(getColumnLetter(j+1)+currRow, r[j]);
+break;
+default:
+row = row + addStringCol(getColumnLetter(j+1)+currRow, r[j]);
+}
+}
+row = row + '</x:row>';
+rows = rows + row;
+}
+xlsx.remove(sheet.name);
+xlsx.file(sheet.name, sheetFront + rows + sheetBack);
+if (shareStrings.length >0)
+{
+xlsx.remove(sharedStringsXml.name);
+sharedStringsFront = sharedStringsFront.replace(/\$count/g, shareStrings.length);
+xlsx.file(sharedStringsXml.name, sharedStringsFront + convertShareStrings() + sharedStringsBack);
+}
+
+var r = xlsx.generate({ base64: false, compression: "DEFLATE" });
+delete xlsx;
+delete shareStrings;
+return r;
+}
+
+var addNumberCol = function(cellRef, value){
+if (value===null)
+return "";
+else
+return '<x:c r="'+cellRef+'" s="0" t="n"><x:v>'+value+'</x:v></x:c>';
+};
+
+var addDateCol = function(cellRef, value){
+if (value===null)
+return "";
+else
+return '<x:c r="'+cellRef+'" s="1" t="n"><x:v>'+value+'</x:v></x:c>';
+};
+
+var addBoolCol = function(cellRef, value){
+if (value===null)
+return "";
+if (value){
+ value = 1
+} else
+ value = 0;
+return '<x:c r="'+cellRef+'" s="0" t="b"><x:v>'+value+'</x:v></x:c>';
+};
+var addStringCol = function(cellRef, value){
+if (value===null)
+return "";
+if (shareStrings.indexOf(value) < 0){
+shareStrings.push(value);
+}
+return '<x:c r="'+cellRef+'" s="0" t="s"><x:v>'+shareStrings.indexOf(value)+'</x:v></x:c>';
+};
+
+var convertShareStrings = function(){
+var r = "";
+for (var i=0;i<shareStrings.length;i++)
+{
+r = r + "<x:si><x:t>"+shareStrings[i]+"</x:t></x:si>";
+}
+return r;
+};
+
+var getColumnLetter = function(col){
+ if (col <= 0)
+throw "col must be more than 0";
+ var array = new Array();
+ while (col > 0)
+ {
+var remainder = col % 26;
+col /= 26;
+col = Math.floor(col);
+if(remainder ===0)
+{
+remainder = 26;
+col--;
+}
+array.push(64 + remainder);
+ }
+ return String.fromCharCode.apply(null, array.reverse());
+}

package.json

@@ -0,0 +1,23 @@
+{
+ "name": "excel-export",
+ "version": "0.1.1",
+ "description": "Simple data set export to Excel xlsx file",
+ "main": "index.js",
+ "scripts": {
+ "test": "mocha test/main"
+ },
+ "repository": "",
+ "keywords": [
+ "Excel",
+ "xlsx"
+ ],
+ "author": "Ber-Lin Lai <berlin.lai@gmail.com>",
+ "license": "BSD",
+ "dependencies":{
+ "node-zip":"1.x" 
+ },
+ "devDependencies": {
+ "mocha": "",
+ "should": ""
+ } 
+}

test/main.js

@@ -0,0 +1,27 @@
+// test/main.js
+var should = require('should');
+var nodeExcel = require('../index');
+
+
+describe('Simple Excel xlsx Export', function() {
+ describe('Export', function() {
+ it('returns xlsx', function() {
+var conf ={};
+conf.cols = [
+{caption:'string', type:'string'},
+{caption:'date', type:'date'},
+{caption:'bool', type:'bool'},
+{caption:'number 2', type:'number'}
+];
+conf.rows = [
+['pi', (new Date(2013, 4, 1)).getJulian(), true, 3.14],
+["e", (new Date(2012, 4, 1)).getJulian(), false, 2.7182],
+["null", null, null, null]
+];
+
+ var result = nodeExcel.execute(conf);
+var fs = require('fs');
+fs.writeFileSync('d.xlsx', result, 'binary');
+ });
+ });
+});