Sakurai/pdf.js
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added getBytes method

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sbarman 2011-06-08 15:41:17 -07:00
parent 3b4d7d3e78
commit 19f9897ec3
1 changed files with 33 additions and 2 deletions
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35
pdf.js
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@ -65,6 +65,17 @@ var Stream = (function() {
return -1;
return bytes[this.pos++];
},
getBytes: function(length) {
var bytes = this.bytes;
var pos = this.pos;
var end = this.end;
if (pos + length > end)
length = end - pos;
var n = 0;
var buf = new Uint8Array(bytes, pos, length);
return buf;
},
lookChar: function() {
var bytes = this.bytes;
if (this.pos >= this.end)
@ -233,7 +244,7 @@ var FlateStream = (function() {
this.eof = false;
this.codeSize = 0;
this.codeBuf = 0;
this.pos = 0;
this.bufferPos = 0;
this.bufferLength = 0;
}
@ -290,6 +301,27 @@ var FlateStream = (function() {
buffer2[i] = buffer[i];
return this.buffer = buffer2;
},
getByte: function() {
var bufferLength = this.bufferLength;
var bufferPos = this.bufferPos;
if (bufferLength == bufferPos) {
if (this.eof)
return;
this.readBlock();
}
return this.buffer[this.bufferPos++];
},
getBytes: function(length) {
var bufferPos = this.bufferPos;
while (!this.eof && this.bufferLength < bufferPos + length)
this.readBlock();
if (length > bufferLength - bufferPos)
length = bufferLength - bufferPos;
return new Uint8Array(this.buffer, bufferPos, length);
},
lookChar: function() {
var bufferLength = this.bufferLength;
var bufferPos = this.bufferPos;
@ -304,7 +336,6 @@ var FlateStream = (function() {
var ch = this.lookChar();
if (!ch)
return;
this.pos++;
this.bufferPos++;
return ch;
},