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Add a missing string-check in the _collectJS helper function #14572

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Merged
merged 1 commit into from
Feb 16, 2022
Merged

Add a missing string-check in the _collectJS helper function #14572

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11 changes: 6 additions & 5 deletions src/core/core_utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@ import {
stringToPDFString,
warn,
} from "../shared/util.js";
import { Dict, isName, isRef, isStream, RefSet } from "./primitives.js";
import { Dict, isName, isRef, RefSet } from "./primitives.js";
import { BaseStream } from "./base_stream.js";

function getLookupTableFactory(initializer) {
let lookup;
Expand Down Expand Up @@ -329,15 +330,15 @@ function _collectJS(entry, xref, list, parents) {
_collectJS(element, xref, list, parents);
}
} else if (entry instanceof Dict) {
if (isName(entry.get("S"), "JavaScript") && entry.has("JS")) {
if (isName(entry.get("S"), "JavaScript")) {
const js = entry.get("JS");
let code;
if (isStream(js)) {
if (js instanceof BaseStream) {
code = js.getString();
} else {
} else if (typeof js === "string") {
code = js;
}
code = stringToPDFString(code);
code = code && stringToPDFString(code);
if (code) {
list.push(code);
}
Expand Down