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Lookup "lenIV" inline in the Type1Parser.prototype.extractFontProgram method #21544

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Merged
timvandermeij merged 1 commit into from
Jul 5, 2026
+11 −7
Merged

Lookup "lenIV" inline in the Type1Parser.prototype.extractFontProgram method #21544

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18 changes: 11 additions & 7 deletions src/core/type1_parser.js
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Original file line number Diff line number Diff line change
Expand Up @@ -565,7 +565,7 @@ class Type1Parser {
privateData,
},
};
let token, length, data, lenIV;
let token, length, data;
// Some fonts (e.g. those embedded in issue18548.pdf) define a second
// `/Subrs` and `/CharStrings` block that the PostScript runtime selects
// conditionally (e.g. high-resolution variants). Testing with other
Expand Down Expand Up @@ -603,8 +603,10 @@ class Type1Parser {
length = this.readInt();
this.getToken(); // read in 'RD' or '-|'
data = length > 0 ? stream.getBytes(length) : new Uint8Array(0);
lenIV = privateData.get("lenIV");
const encoded = this.readCharStrings(data, lenIV);
const encoded = this.readCharStrings(
data,
privateData.get("lenIV")
);
this.nextChar();
token = this.getToken(); // read in 'ND' or '|-'
if (token === "noaccess") {
Expand Down Expand Up @@ -632,8 +634,10 @@ class Type1Parser {
length = this.readInt();
this.getToken(); // read in 'RD' or '-|'
data = length > 0 ? stream.getBytes(length) : new Uint8Array(0);
lenIV = privateData.get("lenIV");
const encoded = this.readCharStrings(data, lenIV);
const encoded = this.readCharStrings(
data,
privateData.get("lenIV")
);
this.nextChar();
token = this.getToken(); // read in 'NP' or '|'
if (token === "noaccess") {
Expand All @@ -650,9 +654,9 @@ class Type1Parser {
// *Blue* values may contain invalid data: disables reading of
// those values when hinting is disabled.
if (
HINTING_ENABLED &&
blueArray.length > 0 &&
blueArray.length % 2 === 0 &&
HINTING_ENABLED
blueArray.length % 2 === 0
) {
privateData.set(token, blueArray);
}
Expand Down