forked from sheetjs/sheetjs
430 lines
13 KiB
JavaScript
430 lines
13 KiB
JavaScript
/* vim: set ts=2:*/
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/*jshint eqnull:true */
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var XLSX = (function(){
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var debug = 0;
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var ct2type = {
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"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml": "workbooks",
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"application/vnd.openxmlformats-package.core-properties+xml": "coreprops",
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"application/vnd.openxmlformats-officedocument.extended-properties+xml": "extprops",
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"application/vnd.openxmlformats-officedocument.spreadsheetml.calcChain+xml": "calcchains",
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"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml":"sheets",
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"application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml": "strs",
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"application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml":"styles",
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"application/vnd.openxmlformats-officedocument.theme+xml":"themes",
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"foo": "bar"
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};
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var WBPropsDef = {
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allowRefreshQuery: '0',
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autoCompressPictures: '1',
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backupFile: '0',
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checkCompatibility: '0',
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codeName: '',
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date1904: '0',
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dateCompatibility: '1',
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//defaultThemeVersion: '0',
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filterPrivacy: '0',
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hidePivotFieldList: '0',
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promptedSolutions: '0',
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publishItems: '0',
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refreshAllConnections: false,
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saveExternalLinkValues: '1',
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showBorderUnselectedTables: '1',
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showInkAnnotation: '1',
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showObjects: 'all',
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showPivotChartFilter: '0'
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//updateLinks: 'userSet'
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};
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var WBViewDef = {
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activeTab: '0',
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autoFilterDateGrouping: '1',
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firstSheet: '0',
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minimized: '0',
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showHorizontalScroll: '1',
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showSheetTabs: '1',
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showVerticalScroll: '1',
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tabRatio: '600',
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visibility: 'visible'
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//window{Height,Width}, {x,y}Window
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};
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var SheetDef = {
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state: 'visible'
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};
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var CalcPrDef = {
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calcCompleted: '1',
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calcMode: 'auto',
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calcOnSave: '1',
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concurrentCalc: '1',
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fullCalcOnLoad: '0',
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iterate: 'false',
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iterateCount: '100',
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iterateDelta: '0.001',
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refMode: 'A1'
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};
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var XMLNS_CT = 'http://schemas.openxmlformats.org/package/2006/content-types';
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var XMLNS_WB = 'http://schemas.openxmlformats.org/spreadsheetml/2006/main';
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var encodings = {
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'>': '>',
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'<': '<',
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'&': '&'
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};
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function unescapexml(text){
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var s = text + '';
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for(var y in encodings) s = s.replace(new RegExp(y,'g'), encodings[y]);
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return s;
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}
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function parsexmltag(tag) {
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var words = tag.split(/\s+/);
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var z = {'0': words[0]};
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if(words.length === 1) return z;
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tag.match(/(\w+)="([^"]*)"/g).map(
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function(x){var y=x.match(/(\w+)="([^"]*)"/); z[y[1]] = y[2]; });
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return z;
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}
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var strs = {}; // shared strings
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function parseSheet(data) { //TODO: use a real xml parser
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var s = {};
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var ref = data.match(/<dimension ref="([^"]*)"\s*\/>/);
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if(ref) s["!ref"] = ref[1];
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var refguess = {s: {r:1000000, c:1000000}, e: {r:0, c:0} };
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//s.rows = {};
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//s.cells = {};
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var q = ["v","f"];
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if(!data.match(/<sheetData *\/>/))
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data.match(/<sheetData>(.*)<\/sheetData>/)[1].split("</row>").forEach(function(x) { if(x === "") return;
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var row = parsexmltag(x.match(/<row[^>]*>/)[0]); //s.rows[row.r]=row.spans;
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if(refguess.s.r > row.r - 1) refguess.s.r = row.r - 1;
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if(refguess.e.r < row.r - 1) refguess.e.r = row.r - 1;
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var cells = x.substr(x.indexOf('>')+1).split(/<\/c>|\/>/);
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cells.forEach(function(c, idx) { if(c === "") return;
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if(refguess.s.c > idx) refguess.s.c = idx;
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if(refguess.e.c < idx) refguess.e.c = idx;
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var cell = parsexmltag((c.match(/<c[^>]*>/)||[c])[0]); delete cell[0];
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var d = c.substr(c.indexOf('>')+1);
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var p = {};
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q.forEach(function(f){var x=d.match(matchtag(f));if(x)p[f]=unescapexml(x[1]);});
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/* SCHEMA IS ACTUALLY INCORRECT HERE. IF A CELL HAS NO T, EMIT "" */
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if(cell.t === undefined) { p.t = "str"; p.v = undefined; }
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else p.t = (cell.t ? cell.t : "n"); // default is "n" in schema
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switch(p.t) {
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case 'n': p.v = parseFloat(p.v); break;
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case 's': p.v = strs[parseInt(p.v, 10)].t; break;
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case 'str': break; // normal string
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default: throw "Unrecognized cell type: " + p.t;
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}
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//s.cells[cell.r] = p;
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s[cell.r] = p;
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});
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});
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if(!s["!ref"]) s["!ref"] = encode_range(refguess);
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if(debug) s.rawdata = data;
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return s;
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}
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// matches <foo>...</foo> extracts content
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function matchtag(f,g) {return new RegExp('<' + f + '>([\\s\\S]*)</' + f + '>',g||"");}
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function parseStrs(data) {
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var s = [];
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var sst = data.match(new RegExp("<sst ([^>]*)>([\\s\\S]*)<\/sst>","m"));
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if(sst) {
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s = sst[2].replace(/<si>/g,"").split(/<\/si>/).map(function(x) { var z = {};
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var y=x.match(/<(.*)>([\s\S]*)<\/.*/); if(y) z[y[1]]=unescapexml(y[2]); return z;});
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sst = parsexmltag(sst[1]); s.count = sst.count; s.uniqueCount = sst.uniqueCount;
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}
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if(debug) s.rawdata = data;
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return s;
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}
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function parseProps(data) {
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var p = { Company:'' }, q = {};
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var strings = ["Application", "DocSecurity", "Company", "AppVersion"];
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var bools = ["HyperlinksChanged","SharedDoc","LinksUpToDate","ScaleCrop"];
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var xtra = ["HeadingPairs", "TitlesOfParts","dc:creator","cp:lastModifiedBy","dcterms:created", "dcterms:modified"];
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strings.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1];});
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bools.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1] == "true";});
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xtra.forEach(function(f) {
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var cur = data.match(new RegExp("<" + f + "[^>]*>(.*)<\/" + f + ">"));
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if(cur && cur.length > 0) q[f] = cur[1];
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});
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p["Worksheets"] = parseInt(q["HeadingPairs"].match(new RegExp("<vt:i4>(.*)<\/vt:i4>"))[1], 10);
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p["SheetNames"] = q["TitlesOfParts"].match(new RegExp("<vt:lpstr>([^<]*)<\/vt:lpstr>","g")).map(function(x){return x.match(new RegExp("<vt:lpstr>([^<]*)<\/vt:lpstr>"))[1];});
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p["Creator"] = q["dc:creator"];
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p["LastModifiedBy"] = q["cp:lastModifiedBy"];
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p["CreatedDate"] = new Date(q["dcterms:created"]);
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p["ModifiedDate"] = new Date(q["dcterms:modified"]);
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if(debug) p.rawdata = data;
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return p;
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}
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function parseDeps(data) {
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var d = [];
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var l = 0, i = 1;
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data.match(/<[^>]*>/g).forEach(function(x) {
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var y = parsexmltag(x);
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switch(y[0]) {
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case '<?xml': break;
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case '<calcChain': break;
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case '<c': delete y[0]; if(y.i) i = y.i; else y.i = i; d.push(y); break;
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}
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});
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if(debug) d.rawdata = data;
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return d;
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}
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var ctext = {};
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function parseCT(data) {
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var ct = { workbooks: [], sheets: [], calcchains: [], themes: [], styles: [],
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coreprops: [], extprops: [], strs:[], xmlns: "" };
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if(data == null) return data;
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data.match(/<[^>]*>/g).forEach(function(x) {
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var y = parsexmltag(x);
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switch(y[0]) {
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case '<?xml': break;
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case '<Types': ct.xmlns = y.xmlns; break;
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case '<Default': ctext[y.Extension] = y.ContentType; break;
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case '<Override':
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if(y.ContentType in ct2type)ct[ct2type[y.ContentType]].push(y.PartName);
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break;
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}
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});
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if(ct.xmlns !== XMLNS_CT) throw "Unknown Namespace: " + ct.xmlns;
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ct.calcchain = ct.calcchains.length > 0 ? ct.calcchains[0] : "";
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delete ct.calcchains;
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if(debug) ct.rawdata = data;
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return ct;
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}
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function parseWB(data) {
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var wb = { AppVersion:{}, WBProps:{}, WBView:[], Sheets:[], CalcPr:{}, xmlns: "" };
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data.match(/<[^>]*>/g).forEach(function(x) {
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var y = parsexmltag(x);
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switch(y[0]) {
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case '<?xml': break;
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case '<workbook': wb.xmlns = y.xmlns; break;
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case '<fileVersion':
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if(y.appName != "xl") throw "Unexpected workbook.appName: "+y.appName;
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delete y[0]; wb.AppVersion = y; break;
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case '<workbookPr': delete y[0]; wb.WBProps = y; break;
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case '<workbookPr/>': delete y[0]; wb.WBProps = y; break;
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case '<bookViews>': case '</bookViews>': break; // aggregate workbookView
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case '<workbookView': delete y[0]; wb.WBView.push(y); break;
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case '<sheets>': case '</sheets>': break; // aggregate sheet
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case '<sheet': delete y[0]; wb.Sheets.push(y); break;
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case '</ext>': case '</extLst>': case '</workbook>': break;
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case '<extLst>': break;
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case '<calcPr': delete y[0]; wb.CalcPr = y; break;
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case '<calcPr/>': delete y[0]; wb.CalcPr = y; break;
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case '<definedNames/>': break;
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case '<mx:ArchID': break;
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case '<ext': break;//TODO: check with different versions of excel
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default: console.log(y);
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}
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});
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if(wb.xmlns !== XMLNS_WB) throw "Unknown Namespace: " + wb.xmlns;
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var z;
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for(z in WBPropsDef) if(null == wb.WBProps[z]) wb.WBProps[z] = WBPropsDef[z];
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wb.WBView.forEach(function(w){for(var z in WBViewDef) if(null==w[z]) w[z]=WBViewDef[z]; });
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for(z in CalcPrDef) if(null == wb.CalcPr[z]) wb.CalcPr[z] = CalcPrDef[z];
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wb.Sheets.forEach(function(w){for(var z in SheetDef) if(null==w[z]) w[z]=SheetDef[z]; });
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if(debug) wb.rawdata = data;
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return wb;
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}
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function parseZip(zip) {
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var entries = Object.keys(zip.files);
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var keys = entries.filter(function(x){return x.substr(-1) != '/';}).sort();
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var dir = parseCT((zip.files['[Content_Types].xml']||{}).data);
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var wb = parseWB(zip.files[dir.workbooks[0].replace(/^\//,'')].data);
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var propdata = dir.coreprops.length !== 0 ? zip.files[dir.coreprops[0].replace(/^\//,'')].data : "";
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propdata += dir.extprops.length !== 0 ? zip.files[dir.extprops[0].replace(/^\//,'')].data : "";
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var props = propdata !== "" ? parseProps(propdata) : {};
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var deps = {};
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if(dir.calcchain) deps=parseDeps(zip.files[dir.calcchain.replace(/^\//,'')].data);
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if(dir.strs[0]) strs=parseStrs(zip.files[dir.strs[0].replace(/^\//,'')].data);
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var sheets = {};
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if(!props.Worksheets) {
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var wbsheets = wb.Sheets;
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props.Worksheets = wbsheets.length;
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props.SheetNames = [];
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for(var j = 0; j != wbsheets.length; ++j) {
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props.SheetNames[j] = wbsheets[j].name;
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}
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}
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for(var i = 0; i != props.Worksheets; ++i) {
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sheets[props.SheetNames[i]]=parseSheet(zip.files[dir.sheets[i].replace(/^\//,'')].data);
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}
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return {
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Directory: dir,
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Workbook: wb,
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Props: props,
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Deps: deps,
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Sheets: sheets,
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SheetNames: props.SheetNames,
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Strings: strs,
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keys: keys,
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files: zip.files
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};
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}
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var fs, jszip;
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if(typeof JSZip !== "undefined") jszip = JSZip;
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if(typeof require !== "undefined") {
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if(typeof jszip === 'undefined') jszip = require('./jszip').JSZip;
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fs = require('fs');
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}
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function readSync(data, options) {
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var zip, d = data;
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var o = options||{};
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switch((o.type||"base64")){
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case "file": d = fs.readFileSync(data).toString('base64');
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/* falls through */
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case "base64": zip = new jszip(d, { base64:true }); break;
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case "binary": zip = new jszip(d, { base64:false }); break;
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}
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return parseZip(zip);
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}
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function readFileSync(data, options) {
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var o = options||{}; o.type = 'file';
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return readSync(data, o);
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}
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this.read = readSync;
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this.readFile = readFileSync;
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this.parseZip = parseZip;
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return this;
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})();
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function encode_col(col) { var s=""; for(++col; col; col=Math.floor((col-1)/26)) s = String.fromCharCode(((col-1)%26) + 65) + s; return s; }
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function encode_row(row) { return "" + (row + 1); }
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function encode_cell(cell) { return encode_col(cell.c) + encode_row(cell.r); }
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function decode_col(c) { var d = 0, i = 0; for(; i !== c.length; ++i) d = 26*d + c.charCodeAt(i) - 64; return d - 1; }
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function decode_row(rowstr) { return Number(rowstr) - 1; }
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function split_cell(cstr) { return cstr.replace(/(\$?[A-Z]*)(\$?[0-9]*)/,"$1,$2").split(","); }
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function decode_cell(cstr) { var splt = split_cell(cstr); return { c:decode_col(splt[0]), r:decode_row(splt[1]) }; }
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function decode_range(range) { var x =range.split(":").map(decode_cell); return {s:x[0],e:x[x.length-1]}; }
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function encode_range(range) { return encode_cell(range.s) + ":" + encode_cell(range.e); }
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/**
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* Convert a sheet into an array of objects where the column headers are keys.
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**/
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function sheet_to_row_object_array(sheet){
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var val, rowObject, range, columnHeaders, emptyRow, C;
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var outSheet = [];
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if (sheet["!ref"]) {
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range = decode_range(sheet["!ref"]);
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columnHeaders = {};
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for (C = range.s.c; C <= range.e.c; ++C) {
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val = sheet[encode_cell({
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c: C,
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r: range.s.r
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})];
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if(val){
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if(val.t === "s"){
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columnHeaders[C] = val.v;
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}
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}
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}
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for (var R = range.s.r + 1; R <= range.e.r; ++R) {
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emptyRow = true;
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//Row number is recorded in the prototype
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//so that it doesn't appear when stringified.
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rowObject = Object.create({ __rowNum__ : R });
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for (C = range.s.c; C <= range.e.c; ++C) {
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val = sheet[encode_cell({
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c: C,
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r: R
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})];
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if(val !== undefined) switch(val.t){
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case 's': case 'str':
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if(val.v !== undefined) {
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rowObject[columnHeaders[C]] = val.v;
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emptyRow = false;
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}
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break;
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default: throw 'unrecognized type ' + val.t;
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}
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}
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if(!emptyRow) {
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outSheet.push(rowObject);
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}
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}
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}
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return outSheet;
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}
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function sheet_to_csv(sheet) {
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var stringify = function stringify(val) {
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switch(val.t){
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case 'n': return val.v;
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case 's': case 'str': return JSON.stringify(val.v);
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default: throw 'unrecognized type ' + val.t;
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}
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};
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var out = "";
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if(sheet["!ref"]) {
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var r = utils.decode_range(sheet["!ref"]);
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for(var R = r.s.r; R <= r.e.r; ++R) {
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var row = [];
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for(var C = r.s.c; C <= r.e.c; ++C) {
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var val = sheet[utils.encode_cell({c:C,r:R})];
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row.push(val ? stringify(val) : "");
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}
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out += row.join(",") + "\n";
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}
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}
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return out;
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}
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var utils = {
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encode_col: encode_col,
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encode_row: encode_row,
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encode_cell: encode_cell,
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encode_range: encode_range,
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decode_col: decode_col,
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decode_row: decode_row,
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split_cell: split_cell,
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decode_cell: decode_cell,
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decode_range: decode_range,
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sheet_to_csv: sheet_to_csv,
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sheet_to_row_object_array: sheet_to_row_object_array
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};
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if(typeof require !== 'undefined' && typeof exports !== 'undefined') {
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exports.read = XLSX.read;
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exports.readFile = XLSX.readFile;
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exports.utils = utils;
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exports.main = function(args) {
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var zip = XLSX.read(args[0], {type:'file'});
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console.log(zip.Sheets);
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};
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if(typeof module !== 'undefined' && require.main === module)
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exports.main(process.argv.slice(2));
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}
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