Sakurai/pdf.js
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Cache the regular expression used for finding objs in XRef_indexObjects, to avoid unnecessary allocations

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Jonas Jenwald 2015-10-02 12:46:58 +02:00
parent 192907e0d2
commit 9b12c64be5
1 changed files with 2 additions and 1 deletions
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src/core/obj.js
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@ -1060,6 +1060,7 @@ var XRef = (function XRefClosure() {
} }
return skipped; return skipped;
} }
var objRegExp = /^(\d+)\s+(\d+)\s+obj\b/;
var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]); var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]);
var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114, var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114,
101, 102]); 101, 102]);
@ -1097,7 +1098,7 @@ var XRef = (function XRefClosure() {
position += skipUntil(buffer, position, trailerBytes); position += skipUntil(buffer, position, trailerBytes);
trailers.push(position); trailers.push(position);
position += skipUntil(buffer, position, startxrefBytes); position += skipUntil(buffer, position, startxrefBytes);
} else if ((m = /^(\d+)\s+(\d+)\s+obj\b/.exec(token))) { } else if ((m = objRegExp.exec(token))) {
if (typeof this.entries[m[1]] === 'undefined') { if (typeof this.entries[m[1]] === 'undefined') {
this.entries[m[1]] = { this.entries[m[1]] = {
offset: position - stream.start, offset: position - stream.start,