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even more error checking for font translation

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This commit is contained in:
Andreas Gal 2011-06-17 16:34:29 -07:00
parent 050acaf5e0
commit a4e1fba9ec
1 changed files with 9 additions and 4 deletions
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13
pdf.js
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@ -1931,12 +1931,12 @@ var CanvasGraphics = (function() {
} else if (IsName(encoding)) { } else if (IsName(encoding)) {
var encoding = Encodings[encoding.name]; var encoding = Encodings[encoding.name];
if (!encoding) if (!encoding)
error("Unknown encoding"); error("Unknown font encoding");
var widths = xref.fetchIfRef(fontDict.get("Widths")); var widths = xref.fetchIfRef(fontDict.get("Widths"));
var firstChar = xref.fetchIfRef(fontDict.get("FirstChar")); var firstChar = xref.fetchIfRef(fontDict.get("FirstChar"));
assertWellFormed(IsArray(widths) && IsInteger(firstChar), assertWellFormed(IsArray(widths) && IsInteger(firstChar),
"invalid Widths or FirstChar"); "invalid font Widths or FirstChar");
var charset = []; var charset = [];
for (var j = 0; j < widths.length; j++) { for (var j = 0; j < widths.length; j++) {
if (widths[j]) if (widths[j])
@ -1945,11 +1945,16 @@ var CanvasGraphics = (function() {
} }
} }
var subType = fontDict.get("Subtype");
var bbox = descriptor.get("FontBBox");
assertWellFormed(IsName(subType) && IsArray(bbox),
"invalid font Subtype or FontBBox");
var properties = { var properties = {
type: fontDict.get("Subtype").name, type: subType.name,
encoding: encodingMap, encoding: encodingMap,
charset: charset, charset: charset,
bbox: descriptor.get("FontBBox") bbox: bbox
}; };
return { return {