mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-22 16:18:08 +02:00
Code Activity

Added #getFingerprint method to PDFDocModel

Browse source
This commit is contained in:
Saebekassebil 2011-12-22 23:44:42 +01:00
parent d44f9f2074
commit 0de0e92bc4
2 changed files with 20 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/core.js
View file

@ -542,6 +542,21 @@ var PDFDocModel = (function PDFDocModelClosure() {
// shadow the prototype getter
return shadow(this, 'numPages', num);
},
getFingerprint: function pdfDocGetFingerprint() {
if(this.fileID) {
return this.fileID;
} 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 = '';
for(var i = 0, length = hash.length; i < length; i++) {
strHash += Number(hash[i]).toString(16);
}
return strHash;
}
},
getPage: function pdfDocGetPage(n) {
return this.catalog.getPage(n);
}
@ -568,7 +583,7 @@ var PDFDoc = (function PDFDocClosure() {
this.data = data;
this.stream = stream;
this.pdf = new PDFDocModel(stream);
this.fileID = this.pdf.fileID;
this.fingerprint = this.pdf.getFingerprint();
this.catalog = this.pdf.catalog;
this.objs = new PDFObjects();