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don't throw if no information dictionary if lenient parsing

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This commit is contained in:
Eliot Jones
2022-04-14 20:46:36 -04:00
parent 49ce5c7eb7
commit cbd02a270f
2 changed files with 13 additions and 9 deletions
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20
src/UglyToad.PdfPig/Parser/DocumentInformationFactory.cs
View File

@@ -5,7 +5,7 @@
using Parts;
using Tokenization.Scanner;
using Tokens;
using UglyToad.PdfPig.Core;
using Core;
/// <summary>
/// Parse the dictionary from a PDF file trailer.
@@ -15,7 +15,7 @@
/// <summary>
/// Convert the file trailer dictionary into a <see cref="DocumentInformation"/> instance.
/// </summary>
public static DocumentInformation Create(IPdfTokenScanner pdfTokenScanner, TrailerDictionary trailer)
public static DocumentInformation Create(IPdfTokenScanner pdfTokenScanner, TrailerDictionary trailer, bool isLenientParsing)
{
if (!trailer.Info.HasValue)
{
@@ -37,26 +37,30 @@
return new DocumentInformation(infoParsed, title, author, subject,
keywords, creator, producer, creationDate, modifiedDate);
}
else if (token is StreamToken streamToken)
if (token is StreamToken streamToken)
{
var streamDictionary = streamToken.StreamDictionary;
if (!streamDictionary.TryGet(NameToken.Type, out NameToken typeNameToken) || typeNameToken != "Metadata")
{
throw new PdfDocumentFormatException($"Unknown document metadata type was found");
throw new PdfDocumentFormatException("Unknown document metadata type was found");
}
if (!streamDictionary.TryGet(NameToken.Subtype, out NameToken subtypeToken) || subtypeToken != "XML")
{
throw new PdfDocumentFormatException($"Unknown document metadata subtype was found");
throw new PdfDocumentFormatException("Unknown document metadata subtype was found");
}
// We are not fully supporting XMP Stream so we left the user fully deserialize the stream
// We are not fully supporting XMP Stream so we let the user fully deserialize the stream
return DocumentInformation.Default;
}
else
if (isLenientParsing)
{
throw new PdfDocumentFormatException($"Unknown document information token was found {token.GetType().Name}");
return DocumentInformation.Default;
}
throw new PdfDocumentFormatException($"Unknown document information token was found {token.GetType().Name}");
}
private static string GetEntryOrDefault(DictionaryToken infoDictionary, NameToken key)

2
src/UglyToad.PdfPig/Parser/PdfDocumentFactory.cs
View File

@@ -137,7 +137,7 @@
var resourceContainer = new ResourceStore(pdfScanner, fontFactory);
var information = DocumentInformationFactory.Create(pdfScanner, crossReferenceTable.Trailer);
var information = DocumentInformationFactory.Create(pdfScanner, crossReferenceTable.Trailer, isLenientParsing);
var catalog = CatalogFactory.Create(rootReference, rootDictionary, pdfScanner, isLenientParsing);