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Use a typed array in the CMAP construction function

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This commit is contained in:
Vivien Nicolas 2011-06-17 07:14:11 +02:00
parent ac020e26f1
commit 7ec2ea1e2f
1 changed files with 20 additions and 24 deletions
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44
PDFFont.js
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@ -274,15 +274,15 @@ Font.prototype = {
},
_createCMAPTable: function font_createCMAPTable(aGlyphs) {
var characters = new Array(kMaxGlyphsCount);
for (var i = 0; i < aGlyphs.length; i++) {
var characters = new Uint16Array(kMaxGlyphsCount);
for (var i = 0; i < aGlyphs.length; i++)
characters[aGlyphs[i].unicode] = i + 1;
}
// Separate the glyphs into continuous range of codes, aka segment.
var ranges = [];
var range = [];
for (var i = 0; i < characters.length; i++) {
var count = characters.length;
for (var i = 0; i < count; i++) {
if (characters[i]) {
range.push(i);
} else if (range.length) {
@ -548,22 +548,18 @@ Font.prototype = {
var FontsUtils = {
_bytesArray: new Uint8Array(4),
integerToBytes: function fu_integerToBytes(aValue, aBytesCount) {
// If we want only one byte, take a fast path
var bytes = this._bytesArray;
if (aBytesCount == 1) {
this._bytesArray.set([aValue]);
return this._bytesArray[0];
bytes.set([aValue]);
return bytes[0];
} else if (aBytesCount == 2) {
bytes.set([aValue >> 8, aValue]);
return [bytes[0], bytes[1]];
} else if (aBytesCount == 4) {
bytes.set([aValue >> 24, aValue >> 16, aValue >> 8, aValue]);
return [bytes[0], bytes[1], bytes[2], bytes[3]];
}
var bytes = [];
for (var i = 0; i < aBytesCount; i++)
bytes[i] = 0x00;
do {
bytes[--aBytesCount] = (aValue & 0xFF);
aValue = aValue >> 8;
} while (aBytesCount && aValue > 0);
return bytes;
},
bytesToInteger: function fu_bytesToInteger(aBytesArray) {
@ -875,7 +871,7 @@ var Type1Parser = function() {
var value = "";
var count = aStream.length;
for (var i = 0; i < count; i++) {
value = aStream.getByte();
value = aStream[i];
if (aByteArray)
decryptedString[i] = value ^ (r >> 8);
else
@ -1054,7 +1050,7 @@ var Type1Parser = function() {
* extracted from and eexec encrypted block of data
*/
this.extractFontInfo = function(aStream) {
var eexecString = decrypt(new Stream(aStream), kEexecEncryptionKey, 4, true);
var eexecString = decrypt(aStream, kEexecEncryptionKey, 4, true);
var subrs = [], glyphs = [];
var inSubrs = inGlyphs = false;
var glyph = "";
@ -1070,16 +1066,16 @@ var Type1Parser = function() {
if (inSubrs && c == 0x52) {
length = parseInt(length);
var stream = new Stream(eexecString.slice(i + 3, i + 3 + length));
var encodedSubr = decrypt(stream, kCharStringsEncryptionKey, 4).join("");
var data = eexecString.slice(i + 3, i + 3 + length);
var encodedSubr = decrypt(data, kCharStringsEncryptionKey, 4).join("");
var subr = decodeCharString(new StringStream(encodedSubr));
subrs.push(subr);
i += 3 + length;
} else if (inGlyphs && c == 0x52) {
length = parseInt(length);
var stream = new Stream(eexecString.slice(i + 3, i + 3 + length));
var encodedCharstring = decrypt(stream, kCharStringsEncryptionKey, 4).join("");
var data = eexecString.slice(i + 3, i + 3 + length);
var encodedCharstring = decrypt(data, kCharStringsEncryptionKey, 4).join("");
var subr = decodeCharString(new StringStream(encodedCharstring));
glyphs.push({