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Check if glyph are stored outside the glyf table

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This commit is contained in:
notmasteryet 2012-02-19 20:12:57 -06:00
parent e0e6209baf
commit 8f3b198c23
4 changed files with 16 additions and 1 deletions
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10
src/fonts.js
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@ -1636,12 +1636,20 @@ var Font = (function FontClosure() {
var locaData = loca.data;
// removing the invalid glyphs
var oldGlyfData = glyf.data;
var newGlyfData = new Uint8Array(oldGlyfData.length);
var oldGlyfDataLength = oldGlyfData.length;
var newGlyfData = new Uint8Array(oldGlyfDataLength);
var startOffset = itemDecode(locaData, 0);
var writeOffset = 0;
itemEncode(locaData, 0, writeOffset);
for (var i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) {
var endOffset = itemDecode(locaData, j);
if (endOffset > oldGlyfDataLength) {
// glyph end offset points outside glyf data, rejecting the glyph
itemEncode(locaData, j, writeOffset);
startOffset = endOffset;
continue;
}
var newLength = sanitizeGlyph(oldGlyfData, startOffset, endOffset,
newGlyfData, writeOffset);
writeOffset += newLength;