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Merge pull request #9920 from Snuffleupagus/getMetadata-linearization

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[api-minor] Add an `IsLinearized` property to the `PDFDocument.documentInfo` getter, to allow accessing the linearization status through the API (via `PDFDocumentProxy.getMetadata`)
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Tim van der Meij 2018-07-29 20:23:22 +02:00 • committed by GitHub
commit 3521424576
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8 changed files with 69 additions and 38 deletions
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56
src/core/document.js
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@ -379,22 +379,16 @@ var PDFDocument = (function PDFDocumentClosure() {
return true; /* found */
}
var DocumentInfoValidators = {
get entries() {
// Lazily build this since all the validation functions below are not
// defined until after this file loads.
return shadow(this, 'entries', {
Title: isString,
Author: isString,
Subject: isString,
Keywords: isString,
Creator: isString,
Producer: isString,
CreationDate: isString,
ModDate: isString,
Trapped: isName,
});
},
const DocumentInfoValidators = {
Title: isString,
Author: isString,
Subject: isString,
Keywords: isString,
Creator: isString,
Producer: isString,
CreationDate: isString,
ModDate: isString,
Trapped: isName,
};
PDFDocument.prototype = {
@ -426,16 +420,14 @@ var PDFDocument = (function PDFDocumentClosure() {
},
get linearization() {
var linearization = null;
if (this.stream.length) {
try {
linearization = Linearization.create(this.stream);
} catch (err) {
if (err instanceof MissingDataException) {
throw err;
}
info(err);
let linearization = null;
try {
linearization = Linearization.create(this.stream);
} catch (err) {
if (err instanceof MissingDataException) {
throw err;
}
info(err);
}
// shadow the prototype getter with a data property
return shadow(this, 'linearization', linearization);
@ -531,12 +523,13 @@ var PDFDocument = (function PDFDocumentClosure() {
return shadow(this, 'numPages', num);
},
get documentInfo() {
var docInfo = {
const docInfo = {
PDFFormatVersion: this.pdfFormatVersion,
IsLinearized: !!this.linearization,
IsAcroFormPresent: !!this.acroForm,
IsXFAPresent: !!this.xfa,
};
var infoDict;
let infoDict;
try {
infoDict = this.xref.trailer.get('Info');
} catch (err) {
@ -545,14 +538,13 @@ var PDFDocument = (function PDFDocumentClosure() {
}
info('The document information dictionary is invalid.');
}
if (infoDict) {
var validEntries = DocumentInfoValidators.entries;
if (isDict(infoDict)) {
// Only fill the document info with valid entries from the spec.
for (var key in validEntries) {
for (let key in DocumentInfoValidators) {
if (infoDict.has(key)) {
var value = infoDict.get(key);
const value = infoDict.get(key);
// Make sure the value conforms to the spec.
if (validEntries[key](value)) {
if (DocumentInfoValidators[key](value)) {
docInfo[key] = (typeof value !== 'string' ?
value : stringToPDFString(value));
} else {