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Add a size getter, to Dict instances, to provide an easier way of checking the number of entries

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This removes the need to manually call `Dict.getKeys()` and check its length.
This commit is contained in:
Jonas Jenwald 2020-07-16 11:57:50 +02:00
parent e63d1ebff5
commit 6381b5b08f
3 changed files with 16 additions and 1 deletions
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2
src/core/document.js
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@ -551,7 +551,7 @@ class PDFDocument {
// Check if a Collection dictionary is present in the document.
try {
const collection = this.catalog.catDict.get("Collection");
if (isDict(collection) && collection.getKeys().length > 0) {
if (isDict(collection) && collection.size > 0) {
this.collection = collection;
}
} catch (ex) {

4
src/core/primitives.js
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@ -85,6 +85,10 @@ var Dict = (function DictClosure() {
this.xref = newXref;
},
get size() {
return Object.keys(this._map).length;
},
// automatically dereferences Ref objects
get(key1, key2, key3) {
let value = this._map[key1];