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

Don't accidentally use an empty hash value when comparing preEvaluatedFonts in PartialEvaluator.loadFont

Browse Source 
Note that `PartialEvaluator.preEvaluateFont` will return an empty string when no hash was computed. This will complete short-circuit the `fontAlias` comparison in `PartialEvaluator.loadFont`, since fonts which are totally different will then match if their `hash`es are empty.
This commit is contained in:
Jonas Jenwald 2019-03-27 00:00:13 +01:00
parent cf1acd3eaf
commit a2a824ed01
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/core/evaluator.js
View File

@ -695,20 +695,19 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var fontCapability = createPromiseCapability();
var preEvaluatedFont = this.preEvaluateFont(font);
var descriptor = preEvaluatedFont.descriptor;
const { descriptor, hash, } = preEvaluatedFont;
var fontRefIsRef = isRef(fontRef), fontID;
if (fontRefIsRef) {
fontID = fontRef.toString();
}
if (isDict(descriptor)) {
if (hash && isDict(descriptor)) {
if (!descriptor.fontAliases) {
descriptor.fontAliases = Object.create(null);
}
var fontAliases = descriptor.fontAliases;
var hash = preEvaluatedFont.hash;
if (fontAliases[hash]) {
var aliasFontRef = fontAliases[hash].aliasRef;
if (fontRefIsRef && aliasFontRef &&
@ -785,7 +784,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
try {
// error, but it's still nice to have font type reported
var descriptor = preEvaluatedFont.descriptor;
var fontFile3 = descriptor && descriptor.get('FontFile3');
var subtype = fontFile3 && fontFile3.get('Subtype');
var fontType = getFontType(preEvaluatedFont.type,