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more XRef parsing

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This commit is contained in:
Andreas Gal 2011-05-06 16:18:13 -07:00
parent 7ab8e72963
commit 16b3a7abc4
1 changed files with 29 additions and 2 deletions
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31
pdf.js
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@ -611,9 +611,36 @@ var Linearization = (function () {
var XRef = (function () {
function constructor(stream, startXRef, mainXRefEntriesOffset) {
this.readXRef(stream, startXRef);
}
constructor.prototype = {
readXRefTable: function(parser) {
this.ok = true;
return true;
},
readXRefStream: function(parser) {
this.ok = true;
return true;
},
readXRef: function(stream, startXRef) {
stream.pos = startXRef;
var parser = new Parser(new Lexer(stream), false);
var obj = parser.getObj();
// parse an old-style xref table
if (obj.isCmd("xref"))
return this.readXRefTable(parser);
// parse an xref stream
if (obj.isInt()) {
if (!parser.getObj().isInt() ||
!parser.getObj().isCmd("obj") ||
!(obj = parser.getObj()).isStream()) {
return false;
}
return this.readXRefStream(obj.value);
}
return false;
}
};
return constructor;
@ -691,8 +718,8 @@ var PDFDoc = (function () {
// May not be a PDF file, continue anyway.
},
setup: function(arrayBuffer, ownerPassword, userPassword) {
this.checkHeader(arrayBuffer);
setup: function(ownerPassword, userPassword) {
this.checkHeader();
this.xref = new XRef(this.stream,
this.startXRef,
this.mainXRefEntriesOffset);