Class PdfCheckersUtil
- java.lang.Object
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- com.itextpdf.kernel.utils.checkers.PdfCheckersUtil
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public final class PdfCheckersUtil extends java.lang.Object
Utility class that contains common checks used in both PDF/A and PDF/UA modules.
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Constructor Summary
Constructors Modifier Constructor Description private
PdfCheckersUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static boolean
checkFlag(int flags, int flag)
Checks if the specified flag is set.static void
checkMetadata(PdfDictionary catalog, PdfConformance conformance, java.util.function.Function<java.lang.String,PdfException> exceptionSupplier)
Checks that theCatalog
dictionary of a conforming file contains theMetadata
key whose value is a metadata stream as defined in ISO 32000-2:2020.static PdfArray
getFormFields(PdfArray array)
Gets all the descending kids including widgets for a givenPdfArray
representing array of form fields.private static boolean
isValidXmpRevision(java.lang.String value)
Validatespdfuaid:rev
value which is four-digit year of the date of publication or revision.static void
validateLang(PdfDictionary catalogDict, java.util.function.Function<java.lang.String,PdfException> exceptionSupplier)
Checks that natural language is declared using the methods described in ISO 32000-2:2020, 14.9.2 or ISO 32000-1:2008, 14.9.2 (same requirements).
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Method Detail
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validateLang
public static void validateLang(PdfDictionary catalogDict, java.util.function.Function<java.lang.String,PdfException> exceptionSupplier)
Checks that natural language is declared using the methods described in ISO 32000-2:2020, 14.9.2 or ISO 32000-1:2008, 14.9.2 (same requirements).- Parameters:
catalogDict
-PdfDictionary
document catalog dictionary containingLang
entry to checkexceptionSupplier
-Function<String, PdfException>
in order to provide correct exception
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checkMetadata
public static void checkMetadata(PdfDictionary catalog, PdfConformance conformance, java.util.function.Function<java.lang.String,PdfException> exceptionSupplier)
Checks that theCatalog
dictionary of a conforming file contains theMetadata
key whose value is a metadata stream as defined in ISO 32000-2:2020. Also checks that the value of eitherpdfuaid:part
orpdfaid:part
is the provided one for conforming PDF files and validates requiredpdfuaid:rev
orpdfaid:rev
value.For PDF/UA, checks that the
Metadata
stream as specified in ISO 32000-2:2020, 14.3 in the document catalog dictionary includes adc:title
entry reflecting the title of the document.For PDF/A, checks that
pdfa:conformance
value is correct if specified.- Parameters:
catalog
-PdfDictionary
document catalog dictionaryconformance
- either PDF/A or PDF/UA conformance to checkexceptionSupplier
-Function<String, PdfException>
in order to provide correct exception
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getFormFields
public static PdfArray getFormFields(PdfArray array)
Gets all the descending kids including widgets for a givenPdfArray
representing array of form fields.- Parameters:
array
- thePdfArray
of form fieldsPdfDictionary
objects- Returns:
- the
PdfArray
of all form fields
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isValidXmpRevision
private static boolean isValidXmpRevision(java.lang.String value)
Validatespdfuaid:rev
value which is four-digit year of the date of publication or revision.- Parameters:
value
-pdfuaid:rev
value to check- Returns:
true
ifpdfuaid:rev
value is valid,false
otherwise
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checkFlag
public static boolean checkFlag(int flags, int flag)
Checks if the specified flag is set.- Parameters:
flags
- a set of flags specifying various characteristics of the PDF objectflag
- to be checked- Returns:
true
if the specified flag is set,false
otherwise
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