sheetjs/bits/60_opc.js

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var ct2type = {
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml": "workbooks", /*XLSX*/
"application/vnd.ms-excel.sheet.macroEnabled.main+xml":"workbooks", /*XLSM*/
"application/vnd.ms-excel.sheet.binary.macroEnabled.main":"workbooks", /*XLSB*/
"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml":"sheets", /*XLS[XM]*/
"application/vnd.ms-excel.worksheet":"sheets", /*XLSB*/
"application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml":"styles", /*XLS[XM]*/
"application/vnd.ms-excel.styles":"styles", /*XLSB*/
"application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml": "strs", /*XLS[XM]*/
"application/vnd.ms-excel.sharedStrings": "strs", /*XLSB*/
"application/vnd.openxmlformats-officedocument.spreadsheetml.calcChain+xml": "calcchains", /*XLS[XM]*/
"application/vnd.ms-excel.calcChain": "calcchains", /*XLSB*/
"application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml": "comments", /*XLS[XM]*/
"application/vnd.ms-excel.comments": "comments", /*XLSB*/
"application/vnd.openxmlformats-package.core-properties+xml": "coreprops",
"application/vnd.openxmlformats-officedocument.extended-properties+xml": "extprops",
"application/vnd.openxmlformats-officedocument.custom-properties+xml": "custprops",
"application/vnd.openxmlformats-officedocument.theme+xml":"themes",
"foo": "bar"
};
var XMLNS_CT = 'http://schemas.openxmlformats.org/package/2006/content-types';
function parseProps(data) {
var p = { Company:'' }, q = {};
var strings = ["Application", "DocSecurity", "Company", "AppVersion"];
var bools = ["HyperlinksChanged","SharedDoc","LinksUpToDate","ScaleCrop"];
var xtra = ["HeadingPairs", "TitlesOfParts"];
var xtracp = ["category", "contentStatus", "lastModifiedBy", "lastPrinted", "revision", "version"];
var xtradc = ["creator", "description", "identifier", "language", "subject", "title"];
var xtradcterms = ["created", "modified"];
xtra = xtra.concat(xtracp.map(function(x) { return "cp:" + x; }));
xtra = xtra.concat(xtradc.map(function(x) { return "dc:" + x; }));
xtra = xtra.concat(xtradcterms.map(function(x) { return "dcterms:" + x; }));
strings.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1];});
bools.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1] == "true";});
xtra.forEach(function(f) {
var cur = data.match(new RegExp("<" + f + "[^>]*>(.*)<\/" + f + ">"));
if(cur && cur.length > 0) q[f] = cur[1];
});
if(q.HeadingPairs && q.TitlesOfParts) {
var v = parseVector(q.HeadingPairs);
var j = 0, widx = 0;
for(var i = 0; i !== v.length; ++i) {
switch(v[i].v) {
case "Worksheets": widx = j; p.Worksheets = +(v[++i].v); break;
case "Named Ranges": ++i; break; // TODO: Handle Named Ranges
}
}
var parts = parseVector(q.TitlesOfParts).map(function(x) { return utf8read(x.v); });
p.SheetNames = parts.slice(widx, widx + p.Worksheets);
}
p.Creator = q["dc:creator"];
p.LastModifiedBy = q["cp:lastModifiedBy"];
p.CreatedDate = new Date(q["dcterms:created"]);
p.ModifiedDate = new Date(q["dcterms:modified"]);
return p;
}
/* 15.2.12.2 Custom File Properties Part */
function parseCustomProps(data) {
var p = {}, name;
data.match(/<[^>]+>([^<]*)/g).forEach(function(x) {
var y = parsexmltag(x);
switch(y[0]) {
case '<property': name = y.name; break;
case '</property>': name = null; break;
default: if (x.indexOf('<vt:') === 0) {
var toks = x.split('>');
var type = toks[0].substring(4), text = toks[1];
/* 22.4.2.32 (CT_Variant). Omit the binary types from 22.4 (Variant Types) */
switch(type) {
case 'lpstr': case 'lpwstr': case 'bstr': case 'lpwstr':
p[name] = unescapexml(text);
break;
case 'bool':
p[name] = parsexmlbool(text, '<vt:bool>');
break;
case 'i1': case 'i2': case 'i4': case 'i8': case 'int': case 'uint':
p[name] = parseInt(text, 10);
break;
case 'r4': case 'r8': case 'decimal':
p[name] = parseFloat(text);
break;
case 'filetime': case 'date':
p[name] = text; // should we make this into a date?
break;
case 'cy': case 'error':
p[name] = unescapexml(text);
break;
default:
console.warn('Unexpected', x, type, toks);
}
}
}
});
return p;
}
var ctext = {};
function parseCT(data) {
if(!data || !data.match) return data;
var ct = { workbooks: [], sheets: [], calcchains: [], themes: [], styles: [],
coreprops: [], extprops: [], custprops: [], strs:[], comments: [], xmlns: "" };
(data.match(/<[^>]*>/g)||[]).forEach(function(x) {
var y = parsexmltag(x);
switch(y[0]) {
case '<?xml': break;
case '<Types': ct.xmlns = y.xmlns; break;
case '<Default': ctext[y.Extension] = y.ContentType; break;
case '<Override':
if(y.ContentType in ct2type)ct[ct2type[y.ContentType]].push(y.PartName);
break;
}
});
if(ct.xmlns !== XMLNS_CT) throw new Error("Unknown Namespace: " + ct.xmlns);
ct.calcchain = ct.calcchains.length > 0 ? ct.calcchains[0] : "";
ct.sst = ct.strs.length > 0 ? ct.strs[0] : "";
ct.style = ct.styles.length > 0 ? ct.styles[0] : "";
delete ct.calcchains;
return ct;
}
/* 9.3.2 OPC Relationships Markup */
function parseRels(data, currentFilePath) {
if (!data) return data;
if (currentFilePath.charAt(0) !== '/') {
currentFilePath = '/'+currentFilePath;
}
var rels = {};
var resolveRelativePathIntoAbsolute = function (to) {
var toksFrom = currentFilePath.split('/');
toksFrom.pop(); // folder path
var toksTo = to.split('/');
var reversed = [];
while (toksTo.length !== 0) {
var tokTo = toksTo.shift();
if (tokTo === '..') {
toksFrom.pop();
} else if (tokTo !== '.') {
toksFrom.push(tokTo);
}
}
return toksFrom.join('/');
};
data.match(/<[^>]*>/g).forEach(function(x) {
var y = parsexmltag(x);
/* 9.3.2.2 OPC_Relationships */
if (y[0] === '<Relationship') {
var rel = {}; rel.Type = y.Type; rel.Target = y.Target; rel.Id = y.Id; rel.TargetMode = y.TargetMode;
var canonictarget = resolveRelativePathIntoAbsolute(y.Target);
rels[canonictarget] = rel;
}
});
return rels;
}