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Prevent errors if the InkList property, in InkAnnotations, is missing and/or not an Array (issue 12392)

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To prevent a future bug, the `Vertices` property in PolylineAnnotations are handled the same way.
This commit is contained in:
Jonas Jenwald 2020-09-19 15:29:55 +02:00
parent 26ae7ba2ad
commit 2497e8eab9
3 changed files with 23 additions and 8 deletions
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22
src/core/annotation.js
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@ -1974,12 +1974,15 @@ class PolylineAnnotation extends MarkupAnnotation {
super(parameters);
this.data.annotationType = AnnotationType.POLYLINE;
this.data.vertices = [];
// The vertices array is an array of numbers representing the alternating
// horizontal and vertical coordinates, respectively, of each vertex.
// Convert this to an array of objects with x and y coordinates.
const rawVertices = parameters.dict.getArray("Vertices");
this.data.vertices = [];
if (!Array.isArray(rawVertices)) {
return;
}
for (let i = 0, ii = rawVertices.length; i < ii; i += 2) {
this.data.vertices.push({
x: rawVertices[i],
@ -2011,20 +2014,23 @@ class InkAnnotation extends MarkupAnnotation {
super(parameters);
this.data.annotationType = AnnotationType.INK;
const xref = parameters.xref;
const originalInkLists = parameters.dict.getArray("InkList");
this.data.inkLists = [];
for (let i = 0, ii = originalInkLists.length; i < ii; ++i) {
const rawInkLists = parameters.dict.getArray("InkList");
if (!Array.isArray(rawInkLists)) {
return;
}
const xref = parameters.xref;
for (let i = 0, ii = rawInkLists.length; i < ii; ++i) {
// The raw ink lists array contains arrays of numbers representing
// the alternating horizontal and vertical coordinates, respectively,
// of each vertex. Convert this to an array of objects with x and y
// coordinates.
this.data.inkLists.push([]);
for (let j = 0, jj = originalInkLists[i].length; j < jj; j += 2) {
for (let j = 0, jj = rawInkLists[i].length; j < jj; j += 2) {
this.data.inkLists[i].push({
x: xref.fetchIfRef(originalInkLists[i][j]),
y: xref.fetchIfRef(originalInkLists[i][j + 1]),
x: xref.fetchIfRef(rawInkLists[i][j]),
y: xref.fetchIfRef(rawInkLists[i][j + 1]),
});
}
}