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[api-minor] Expose the existence of a Collection dictionary via the getMetadata API method (issue 10555)

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Given the complexity of this functionality, and the fact that it doesn't seem widely used, I highly doubt that it'd ever make sense to support Collections; see also https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#M11.9.39646.2Heading.824.Collections
This commit is contained in:
Jonas Jenwald 2019-02-15 14:42:50 +01:00
parent 81f5835cd7
commit 60f6d49ff7
2 changed files with 17 additions and 2 deletions
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17
src/core/document.js
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@ -401,8 +401,7 @@ class PDFDocument {
if (this.acroForm) {
this.xfa = this.acroForm.get('XFA');
const fields = this.acroForm.get('Fields');
if ((!fields || !Array.isArray(fields) || fields.length === 0) &&
!this.xfa) {
if ((!Array.isArray(fields) || fields.length === 0) && !this.xfa) {
this.acroForm = null; // No fields and no XFA, so it's not a form.
}
}
@ -413,6 +412,19 @@ class PDFDocument {
info('Cannot fetch AcroForm entry; assuming no AcroForms are present');
this.acroForm = null;
}
// 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) {
this.collection = collection;
}
} catch (ex) {
if (ex instanceof MissingDataException) {
throw ex;
}
info('Cannot fetch Collection dictionary.');
}
}
get linearization() {
@ -534,6 +546,7 @@ class PDFDocument {
IsLinearized: !!this.linearization,
IsAcroFormPresent: !!this.acroForm,
IsXFAPresent: !!this.xfa,
IsCollectionPresent: !!this.collection,
};
let infoDict;

2
test/unit/api_spec.js
View File

@ -846,6 +846,7 @@ describe('api', function() {
expect(info['IsLinearized']).toEqual(false);
expect(info['IsAcroFormPresent']).toEqual(false);
expect(info['IsXFAPresent']).toEqual(false);
expect(info['IsCollectionPresent']).toEqual(false);
expect(metadata instanceof Metadata).toEqual(true);
expect(metadata.get('dc:title')).toEqual('Basic API Test');
@ -874,6 +875,7 @@ describe('api', function() {
expect(info['IsLinearized']).toEqual(false);
expect(info['IsAcroFormPresent']).toEqual(false);
expect(info['IsXFAPresent']).toEqual(false);
expect(info['IsCollectionPresent']).toEqual(false);
expect(metadata).toEqual(null);
expect(contentDispositionFilename).toEqual(null);