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remove not-required compiler directive

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This commit is contained in:
Eliot Jones
2022-04-10 11:52:33 -04:00
parent 9cffd501fa
commit 2d34e46122
1 changed files with 5 additions and 71 deletions
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76
src/UglyToad.PdfPig/Parser/CatalogFactory.cs
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@@ -20,7 +20,7 @@
}
}
public static Catalog Create(IndirectReference rootReference, DictionaryToken dictionary,
public static Catalog Create(IndirectReference rootReference, DictionaryToken dictionary,
IPdfTokenScanner scanner,
bool isLenientParsing)
{
@@ -64,8 +64,6 @@
return new Catalog(dictionary, pages, pageTree);
}
#if NETSTANDARD2_0_OR_GREATER
private static PageTreeNode ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing, PageCounter pageNumber)
{
bool isPage = CheckIfIsPage(nodeDictionaryInput, parentReferenceInput, isRoot, pdfTokenScanner, isLenientParsing);
@@ -79,11 +77,11 @@
//If we got here, we have to iterate till we manage to exit
var toProcess = new Queue<(PageTreeNode thisPage, IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, List<PageTreeNode> nodeChildren)>();
var firstPage = new PageTreeNode(nodeDictionaryInput, referenceInput, false, null);
var setChildren = new List<Action>();
var toProcess = new Queue<(PageTreeNode thisPage, IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, List<PageTreeNode> nodeChildren)>();
var firstPage = new PageTreeNode(nodeDictionaryInput, referenceInput, false, null);
var setChildren = new List<Action>();
var firstPageChildren = new List<PageTreeNode>();
setChildren.Add(() => firstPage.WithChildren(firstPageChildren));
toProcess.Enqueue((thisPage: firstPage, reference: referenceInput, nodeDictionary: nodeDictionaryInput, parentReference: parentReferenceInput, nodeChildren: firstPageChildren));
@@ -162,69 +160,5 @@
return isPage;
}
}
#endif
// Keep the algorithm below from throwing a StackOverflow exception.
// It probably should be refactored to not be recursive
private const ushort MAX_TREE_DEPTH = 1024;
private static PageTreeNode ProcessPagesNode(IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing, PageCounter pageNumber, int depth = 0)
{
depth++;
if (depth > MAX_TREE_DEPTH) { throw new PdfDocumentFormatException($"Tree exceeded maximum depth of {MAX_TREE_DEPTH}, aborting."); }
var isPage = false;
if (!nodeDictionary.TryGet(NameToken.Type, pdfTokenScanner, out NameToken type))
{
if (!isLenientParsing) { throw new PdfDocumentFormatException($"Node in the document pages tree did not define a type: {nodeDictionary}."); }
if (!nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken _)) { isPage = true; }
}
else
{
isPage = type.Equals(NameToken.Page);
if (!isPage && !type.Equals(NameToken.Pages) && !isLenientParsing) { throw new PdfDocumentFormatException($"Node in the document pages tree defined invalid type: {nodeDictionary}."); }
}
if (!isLenientParsing && !isRoot)
{
if (!nodeDictionary.TryGet(NameToken.Parent, pdfTokenScanner, out IndirectReferenceToken parentReferenceToken)) { throw new PdfDocumentFormatException($"Could not find parent indirect reference token on pages tree node: {nodeDictionary}."); }
if (!parentReferenceToken.Data.Equals(parentReference)) { throw new PdfDocumentFormatException($"Pages tree node parent reference {parentReferenceToken.Data} did not match actual parent {parentReference}."); }
}
if (isPage)
{
pageNumber.Increment();
var newPage = new PageTreeNode(nodeDictionary, reference, true, pageNumber.PageCount).WithChildren(EmptyArray<PageTreeNode>.Instance);
return newPage;
}
if (!nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken kids))
{
if (!isLenientParsing) { throw new PdfDocumentFormatException($"Pages node in the document pages tree did not define a kids array: {nodeDictionary}."); }
kids = new ArrayToken(EmptyArray<IToken>.Instance);
}
var nodeChildren = new List<PageTreeNode>();
foreach (var kid in kids.Data)
{
if (!(kid is IndirectReferenceToken kidRef)) { throw new PdfDocumentFormatException($"Kids array contained invalid entry (must be indirect reference): {kid}."); }
if (!DirectObjectFinder.TryGet(kidRef, pdfTokenScanner, out DictionaryToken kidDictionaryToken)) { throw new PdfDocumentFormatException($"Could not find dictionary associated with reference in pages kids array: {kidRef}."); }
var kidNode = ProcessPagesNode(kidRef.Data, kidDictionaryToken, reference, false, pdfTokenScanner, isLenientParsing, pageNumber, depth);
nodeChildren.Add(kidNode);
}
return new PageTreeNode(nodeDictionary, reference, false, null).WithChildren(nodeChildren);
}
}
}