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Merge pull request #1413 from saebekassebil/metadata

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Metadata Parsing - Setting proper document title
This commit is contained in:
Brendan Dahl 2012-03-28 12:02:16 -07:00
commit afebc33142
7 changed files with 123 additions and 15 deletions
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33
src/core.js
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@ -587,14 +587,6 @@ var PDFDocModel = (function PDFDocModelClosure() {
this.mainXRefEntriesOffset);
this.xref = xref;
this.catalog = new Catalog(xref);
if (xref.trailer && xref.trailer.has('ID')) {
var fileID = '';
var id = xref.fetchIfRef(xref.trailer.get('ID'))[0];
id.split('').forEach(function(el) {
fileID += Number(el.charCodeAt(0)).toString(16);
});
this.fileID = fileID;
}
},
get numPages() {
var linearization = this.linearization;
@ -602,21 +594,33 @@ var PDFDocModel = (function PDFDocModelClosure() {
// shadow the prototype getter
return shadow(this, 'numPages', num);
},
getDocumentInfo: function pdfDocGetDocumentInfo() {
var info;
if (this.xref.trailer.has('Info'))
info = this.xref.fetch(this.xref.trailer.get('Info'));
return shadow(this, 'getDocumentInfo', info);
},
getFingerprint: function pdfDocGetFingerprint() {
if (this.fileID) {
return this.fileID;
var xref = this.xref, fileID;
if (xref.trailer.has('ID')) {
fileID = '';
var id = xref.fetchIfRef(xref.trailer.get('ID'))[0];
id.split('').forEach(function(el) {
fileID += Number(el.charCodeAt(0)).toString(16);
});
} else {
// If we got no fileID, then we generate one,
// from the first 100 bytes of PDF
var data = this.stream.bytes.subarray(0, 100);
var hash = calculateMD5(data, 0, data.length);
var strHash = '';
fileID = '';
for (var i = 0, length = hash.length; i < length; i++) {
strHash += Number(hash[i]).toString(16);
fileID += Number(hash[i]).toString(16);
}
return strHash;
}
return shadow(this, 'getFingerprint', fileID);
},
getPage: function pdfDocGetPage(n) {
return this.catalog.getPage(n);
@ -645,6 +649,7 @@ var PDFDoc = (function PDFDocClosure() {
this.stream = stream;
this.pdfModel = new PDFDocModel(stream);
this.fingerprint = this.pdfModel.getFingerprint();
this.info = this.pdfModel.getDocumentInfo();
this.catalog = this.pdfModel.catalog;
this.objs = new PDFObjects();