Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix for uncompressed flatestream blocks

Browse Source
This commit is contained in:
sbarman 2011-06-23 09:41:59 -07:00
parent 3f2bbbe919
commit 18afc896f6
1 changed files with 13 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
pdf.js
View File

@ -479,17 +479,17 @@ var FlateStream = (function() {
array[i++] = what;
}
var bytes = this.bytes;
var bytesPos = this.bytesPos;
// read block header
var hdr = this.getBits(3);
if (hdr & 1)
this.eof = true;
hdr >>= 1;
var b;
if (hdr == 0) { // uncompressed block
var bytes = this.bytes;
var bytesPos = this.bytesPos;
var b;
if (typeof (b = bytes[bytesPos++]) == "undefined")
error("Bad block header in flate stream");
var blockLen = b;
@ -502,18 +502,24 @@ var FlateStream = (function() {
if (typeof (b = bytes[bytesPos++]) == "undefined")
error("Bad block header in flate stream");
check |= (b << 8);
if (check != (~this.blockLen & 0xffff))
if (check != (~blockLen & 0xffff))
error("Bad uncompressed block length in flate stream");
this.codeBuf = 0;
this.codeSize = 0;
var bufferLength = this.bufferLength;
var buffer = this.ensureBuffer(bufferLength + blockLen);
this.bufferLength = bufferLength + blockLen;
for (var n = bufferLength; n < blockLen; ++n) {
var end = bufferLength + blockLen;
this.bufferLength = end;
for (var n = bufferLength; n < end; ++n) {
if (typeof (b = bytes[bytesPos++]) == "undefined") {
this.eof = true;
break;
}
buffer[n] = b;
}
this.bytesPos = bytesPos;
return;
}