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Fixing ToUnicode parsing; workaround for invalid UTF16 encoding

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notmasteryet 2012-02-09 18:40:44 -08:00
parent 7859ef0f04
commit d50773fb96
2 changed files with 24 additions and 7 deletions
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14
src/evaluator.js
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@ -620,8 +620,18 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} else {
// parsing hex UTF-16BE numbers
var str = [];
for (var i = 0, ii = token.length; i < ii; i += 4)
str.push(parseInt(token.substr(i, 4), 16));
for (var k = 0, kk = token.length; k < kk; k += 4) {
var b = parseInt(token.substr(k, 4), 16);
if (b <= 0x10) {
k += 4;
b = (b << 16) | parseInt(token.substr(k, 4), 16);
b -= 0x10000;
str.push(0xD800 | (b >> 10));
str.push(0xDC00 | (b & 0x3FF));
break;
}
str.push(b);
}
tokens.push(String.fromCharCode.apply(String, str));
token = '';
}

17
src/fonts.js
View File

@ -823,6 +823,13 @@ var Font = (function FontClosure() {
else
this.rebuildToUnicode(properties);
this.toUnicodeOriginal = this.toUnicode.slice();
for (var i = 0, j = 0xE000; i < this.toUnicode.length; i++) {
if (typeof this.toUnicode[i] == 'number')
break;
this.toUnicode[i] = j++;
}
if (!file) {
// The file data is not specified. Trying to fix the font name
// to be used with the canvas.font.
@ -1778,7 +1785,7 @@ var Font = (function FontClosure() {
for (var i = 1; i < numGlyphs; i++) {
var cid = gidToCidMap[i] || i;
var unicode = this.toUnicode[cid];
if (!unicode || isSpecialUnicode(unicode) ||
if (!unicode || typeof unicode !== 'number' || isSpecialUnicode(unicode) ||
unicode in usedUnicodes) {
unassignedUnicodeItems.push(i);
continue;
@ -1825,7 +1832,7 @@ var Font = (function FontClosure() {
var usedUnicodes = [], unassignedUnicodeItems = [];
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var unicode = toUnicode[i + 1];
if (!unicode || unicode in usedUnicodes) {
if (!unicode || typeof unicode !== 'number' || unicode in usedUnicodes) {
unassignedUnicodeItems.push(i);
continue;
}
@ -1972,7 +1979,7 @@ var Font = (function FontClosure() {
}
properties.baseEncoding = encoding;
}
if (properties.subtype == 'CIDFontType0C') {
if (false && properties.subtype == 'CIDFontType0C') {
var toUnicode = [];
for (var i = 0; i < charstrings.length; ++i) {
var charstring = charstrings[i];
@ -2270,8 +2277,8 @@ var Font = (function FontClosure() {
break;
}
var unicodeChars = !('toUnicode' in this) ? charcode :
this.toUnicode[charcode] || charcode;
var unicodeChars = !('toUnicodeOriginal' in this) ? charcode :
this.toUnicodeOriginal[charcode] || charcode;
if (typeof unicodeChars === 'number')
unicodeChars = String.fromCharCode(unicodeChars);