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If readXRefStream or readXRefTable fails, fallback to object indexing (#828)

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notmasteryet 2011-12-02 15:31:29 -06:00
parent c0291e9fa3
commit 0f7f80ee6e
1 changed files with 17 additions and 12 deletions
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29
src/obj.js
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@ -518,20 +518,25 @@ var XRef = (function xRefXRef() {
readXRef: function readXref(startXRef) {
var stream = this.stream;
stream.pos = startXRef;
var parser = new Parser(new Lexer(stream), true);
var obj = parser.getObj();
// parse an old-style xref table
if (isCmd(obj, 'xref'))
return this.readXRefTable(parser);
// parse an xref stream
if (isInt(obj)) {
if (!isInt(parser.getObj()) ||
!isCmd(parser.getObj(), 'obj') ||
!isStream(obj = parser.getObj())) {
error('Invalid XRef stream');
try {
var parser = new Parser(new Lexer(stream), true);
var obj = parser.getObj();
// parse an old-style xref table
if (isCmd(obj, 'xref'))
return this.readXRefTable(parser);
// parse an xref stream
if (isInt(obj)) {
if (!isInt(parser.getObj()) ||
!isCmd(parser.getObj(), 'obj') ||
!isStream(obj = parser.getObj())) {
error('Invalid XRef stream');
}
return this.readXRefStream(obj);
}
return this.readXRefStream(obj);
} catch(e) {
log('Reading of the xref table/stream failed: ' + e);
}
warn('Indexing all PDF objects');
return this.indexObjects();
},
getEntry: function xRefGetEntry(i) {