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remove preview static local function by moving to class scope

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This commit is contained in:
Eliot Jones
2022-04-10 12:06:12 -04:00
parent 2d34e46122
commit 3195422376
1 changed files with 52 additions and 31 deletions
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83
src/UglyToad.PdfPig/Parser/CatalogFactory.cs
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@@ -64,7 +64,13 @@
return new Catalog(dictionary, pages, pageTree);
}
private static PageTreeNode ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing, PageCounter pageNumber)
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);
@@ -77,14 +83,18 @@
//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 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));
toProcess.Enqueue(
(thisPage: firstPage, reference: referenceInput, nodeDictionary: nodeDictionaryInput, parentReference: parentReferenceInput,
nodeChildren: firstPageChildren));
do
{
@@ -92,16 +102,25 @@
if (!current.nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken kids))
{
if (!isLenientParsing) { throw new PdfDocumentFormatException($"Pages node in the document pages tree did not define a kids array: {current.nodeDictionary}."); }
if (!isLenientParsing)
{
throw new PdfDocumentFormatException($"Pages node in the document pages tree did not define a kids array: {current.nodeDictionary}.");
}
kids = new ArrayToken(EmptyArray<IToken>.Instance);
}
foreach (var kid in kids.Data)
{
if (!(kid is IndirectReferenceToken kidRef)) { throw new PdfDocumentFormatException($"Kids array contained invalid entry (must be indirect reference): {kid}."); }
if (!(kid is IndirectReferenceToken kidRef))
{
throw new PdfDocumentFormatException($"Kids array contained invalid entry (must be indirect reference): {kid}.");
}
if (!DirectObjectFinder.TryGet(kidRef, pdfTokenScanner, out DictionaryToken kidDictionaryToken)) { throw new PdfDocumentFormatException($"Could not find dictionary associated with reference in pages kids array: {kidRef}."); }
if (!DirectObjectFinder.TryGet(kidRef, pdfTokenScanner, out DictionaryToken kidDictionaryToken))
{
throw new PdfDocumentFormatException($"Could not find dictionary associated with reference in pages kids array: {kidRef}.");
}
bool isChildPage = CheckIfIsPage(kidDictionaryToken, current.reference, false, pdfTokenScanner, isLenientParsing);
@@ -109,14 +128,17 @@
{
pageNumber.Increment();
var kidPageNode = new PageTreeNode(kidDictionaryToken, kidRef.Data, true, pageNumber.PageCount).WithChildren(EmptyArray<PageTreeNode>.Instance);
var kidPageNode =
new PageTreeNode(kidDictionaryToken, kidRef.Data, true, pageNumber.PageCount).WithChildren(EmptyArray<PageTreeNode>.Instance);
current.nodeChildren.Add(kidPageNode);
}
else
{
var kidChildNode = new PageTreeNode(kidDictionaryToken, kidRef.Data, false, null);
var kidChildren = new List<PageTreeNode>();
toProcess.Enqueue((thisPage: kidChildNode, reference: kidRef.Data, nodeDictionary: kidDictionaryToken, parentReference: current.reference, nodeChildren: kidChildren));
toProcess.Enqueue(
(thisPage: kidChildNode, reference: kidRef.Data, nodeDictionary: kidDictionaryToken, parentReference: current.reference,
nodeChildren: kidChildren));
setChildren.Add(() => kidChildNode.WithChildren(kidChildren));
@@ -131,34 +153,33 @@
}
return firstPage;
}
private static bool CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing)
{
var isPage = false;
static bool CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing)
if (!nodeDictionary.TryGet(NameToken.Type, pdfTokenScanner, out NameToken type))
{
var isPage = false;
if (!isLenientParsing) { throw new PdfDocumentFormatException($"Node in the document pages tree did not define a type: {nodeDictionary}."); }
if (!nodeDictionary.TryGet(NameToken.Type, pdfTokenScanner, out NameToken type))
{
if (!isLenientParsing) { throw new PdfDocumentFormatException($"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($"Pages tree node parent reference {parentReferenceToken.Data} did not match actual parent {parentReference}."); }
}
return isPage;
if (!nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken _)) { isPage = true; }
}
else
{
isPage = type.Equals(NameToken.Page);
if (!isPage && !type.Equals(NameToken.Pages) && !isLenientParsing) { throw new PdfDocumentFormatException($"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}."); }
}
return isPage;
}
}
}