com.itextpdf.pdfa.checker

Class PdfA1Checker

java.lang.Object

com.itextpdf.pdfa.checker.PdfAChecker

com.itextpdf.pdfa.checker.PdfA1Checker

Direct Known Subclasses:

PdfA2Checker

public class PdfA1Checker
extends PdfAChecker

PdfA1Checker defines the requirements of the PDF/A-1 standard and contains method implementations from the abstract PdfAChecker class.

The specification implemented by this class is ISO 19005-1

Field Summary

Fields

Modifier and Type	Field and Description
protected static Set<PdfName>	allowedNamedActions
protected static Set<PdfName>	allowedRenderingIntents
protected static Set<PdfName>	contentAnnotations
protected static Set<PdfName>	forbiddenActions
protected static Set<PdfName>	forbiddenAnnotations

Fields inherited from class com.itextpdf.pdfa.checker.PdfAChecker

checkedObjects, checkedObjectsColorspace, cmykIsUsed, conformanceLevel, grayIsUsed, gsStackDepth, ICC_COLOR_SPACE_CMYK, ICC_COLOR_SPACE_GRAY, ICC_COLOR_SPACE_RGB, ICC_DEVICE_CLASS_MONITOR_PROFILE, ICC_DEVICE_CLASS_OUTPUT_PROFILE, maxGsStackDepth, pdfAOutputIntentColorSpace, rgbIsUsed

Constructor Summary

Constructors

Constructor and Description
PdfA1Checker(PdfAConformanceLevel conformanceLevel) Creates a PdfA1Checker with the required conformance level

Method Summary

Modifier and Type	Method and Description
protected void	checkAction(PdfDictionary action)
protected void	checkAnnotation(PdfDictionary annotDic)
void	checkCanvasStack(char stackOperation) This method checks compliance with the graphics state architectural limitation, explained by PdfAChecker.maxGsStackDepth.
protected void	checkCatalogValidEntries(PdfDictionary catalogDict)
void	checkColor(Color color, PdfDictionary currentColorSpaces, Boolean fill, PdfStream stream) This method checks compliance with the color restrictions imposed by the available color spaces in the document.
void	checkColorSpace(PdfColorSpace colorSpace, PdfDictionary currentColorSpaces, boolean checkAlternate, Boolean fill) This method performs a range of checks on the given color space, depending on the type and properties of that color space.
protected void	checkColorsUsages()
protected void	checkContentStream(PdfStream contentStream) Attest content stream conformance with appropriate specification.
protected void	checkContentStreamObject(PdfObject object) Verify the conformity of the operand of content stream with appropriate specification.
void	checkExtGState(CanvasGraphicsState extGState, PdfStream contentStream) Performs a number of checks on the graphics state, among others ISO 19005-1 section 6.2.8 and 6.4 and ISO 19005-2 section 6.2.5 and 6.2.10.
protected void	checkFileSpec(PdfDictionary fileSpec)
void	checkFont(PdfFont pdfFont) Performs a number of checks on the font.
void	checkFontGlyphs(PdfFont font, PdfStream contentStream) Performs a check of the each font glyph as a Form XObject.
protected void	checkForm(PdfDictionary form)
protected void	checkFormXObject(PdfStream form)
protected void	checkImage(PdfStream image, PdfDictionary currentColorSpaces)
void	checkInlineImage(PdfStream inlineImage, PdfDictionary currentColorSpaces) This method checks compliance with the inline image restrictions in the PDF/A specs, specifically filter parameters.
protected void	checkLogicalStructure(PdfDictionary catalog)
protected void	checkMetaData(PdfDictionary catalog)
protected void	checkNonSymbolicTrueTypeFont(PdfTrueTypeFont trueTypeFont)
protected void	checkOutputIntents(PdfDictionary catalog)
protected void	checkPageObject(PdfDictionary pageDict, PdfDictionary pageResources)
protected void	checkPageSize(PdfDictionary page)
protected void	checkPageTransparency(PdfDictionary pageDict, PdfDictionary pageResources)
protected void	checkPdfArray(PdfArray array)
protected void	checkPdfDictionary(PdfDictionary dictionary)
protected void	checkPdfName(PdfName name)
protected void	checkPdfNumber(PdfNumber number)
protected void	checkPdfStream(PdfStream stream)
protected void	checkPdfString(PdfString string)
void	checkRenderingIntent(PdfName intent) Checks whether the rendering intent of the document is within the allowed range of intents.
protected void	checkSymbolicTrueTypeFont(PdfTrueTypeFont trueTypeFont)
protected void	checkTrailer(PdfDictionary trailer)
void	checkXrefTable(PdfXrefTable xrefTable) Verify the conformity of the cross-reference table.
protected Set<PdfName>	getAllowedNamedActions()
protected Set<PdfName>	getForbiddenActions()
protected PdfArray	getFormFields(PdfArray array)
protected long	getMaxIntegerValue() Retrieve maximal allowed integer value.
protected int	getMaxNameLength() Retrieve maximum allowed length of the name object.
protected long	getMaxNumberOfIndirectObjects() Retrieve maximum allowed number of indirect objects in conforming document.
protected double	getMaxRealValue() Retrieve maximum allowed real value.
protected int	getMaxStringLength()
protected long	getMinIntegerValue() Retrieve minimal allowed integer value.

Methods inherited from class com.itextpdf.pdfa.checker.PdfAChecker

checkAppearanceStream, checkDocument, checkFlag, checkPdfObject, checkResources, checkResourcesOfAppearanceStreams, checkSinglePage, checkStructure, checkTagStructureElement, getConformanceLevel, isAlreadyChecked, isContainsTransparencyGroup, isFullCheckMode, objectIsChecked, setFullCheckMode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

forbiddenAnnotations

protected static final Set<PdfName> forbiddenAnnotations

contentAnnotations

protected static final Set<PdfName> contentAnnotations

forbiddenActions

protected static final Set<PdfName> forbiddenActions

allowedNamedActions

protected static final Set<PdfName> allowedNamedActions

allowedRenderingIntents

protected static final Set<PdfName> allowedRenderingIntents

Constructor Detail

PdfA1Checker

public PdfA1Checker(PdfAConformanceLevel conformanceLevel)

Creates a PdfA1Checker with the required conformance level

Parameters:

conformanceLevel - the required conformance level, a or b

Method Detail

checkCanvasStack

public void checkCanvasStack(char stackOperation)

Description copied from class: PdfAChecker

This method checks compliance with the graphics state architectural limitation, explained by PdfAChecker.maxGsStackDepth.

Specified by:

checkCanvasStack in class PdfAChecker

Parameters:

stackOperation - the operation to check the graphics state counter for

checkInlineImage

public void checkInlineImage(PdfStream inlineImage,
                             PdfDictionary currentColorSpaces)

Description copied from class: PdfAChecker

This method checks compliance with the inline image restrictions in the PDF/A specs, specifically filter parameters.

Specified by:

checkInlineImage in class PdfAChecker

Parameters:

inlineImage - a PdfStream containing the inline image

currentColorSpaces - a PdfDictionary containing the color spaces used in the document

checkColor

public void checkColor(Color color,
                       PdfDictionary currentColorSpaces,
                       Boolean fill,
                       PdfStream stream)

Description copied from class: PdfAChecker

This method checks compliance with the color restrictions imposed by the available color spaces in the document. This method will be abstract in update 7.2

Specified by:

checkColor in class PdfAChecker

Parameters:

color - the color to check

currentColorSpaces - a PdfDictionary containing the color spaces used in the document

fill - whether the color is used for fill or stroke operations

stream - current content stream

checkColorSpace

public void checkColorSpace(PdfColorSpace colorSpace,
                            PdfDictionary currentColorSpaces,
                            boolean checkAlternate,
                            Boolean fill)

Description copied from class: PdfAChecker

This method performs a range of checks on the given color space, depending on the type and properties of that color space.

Specified by:

checkColorSpace in class PdfAChecker

Parameters:

colorSpace - the color space to check

currentColorSpaces - a PdfDictionary containing the color spaces used in the document

checkAlternate - whether or not to also check the parent color space

fill - whether the color space is used for fill or stroke operations

checkXrefTable

public void checkXrefTable(PdfXrefTable xrefTable)

Description copied from class: PdfAChecker

Verify the conformity of the cross-reference table.

Specified by:

checkXrefTable in class PdfAChecker

Parameters:

xrefTable - is the Xref table

getForbiddenActions

protected Set<PdfName> getForbiddenActions()

Specified by:

getForbiddenActions in class PdfAChecker

getAllowedNamedActions

protected Set<PdfName> getAllowedNamedActions()

Specified by:

getAllowedNamedActions in class PdfAChecker

getMaxNumberOfIndirectObjects

protected long getMaxNumberOfIndirectObjects()

Description copied from class: PdfAChecker

Retrieve maximum allowed number of indirect objects in conforming document.

Specified by:

getMaxNumberOfIndirectObjects in class PdfAChecker

Returns:

maximum allowed number of indirect objects

checkColorsUsages

protected void checkColorsUsages()

Specified by:

checkColorsUsages in class PdfAChecker

checkExtGState

public void checkExtGState(CanvasGraphicsState extGState,
                           PdfStream contentStream)

Description copied from class: PdfAChecker

Performs a number of checks on the graphics state, among others ISO 19005-1 section 6.2.8 and 6.4 and ISO 19005-2 section 6.2.5 and 6.2.10. This method will be abstract in the update 7.2

Specified by:

checkExtGState in class PdfAChecker

Parameters:

extGState - the graphics state to be checked

contentStream - current content stream

checkFontGlyphs

public void checkFontGlyphs(PdfFont font,
                            PdfStream contentStream)

Description copied from class: PdfAChecker

Performs a check of the each font glyph as a Form XObject. See ISO 19005-2 Annex A.5. This only applies to type 3 fonts. This method will be abstract in update 7.2

Specified by:

checkFontGlyphs in class PdfAChecker

Parameters:

font - PdfFont to be checked

contentStream - stream containing checked font

checkRenderingIntent

public void checkRenderingIntent(PdfName intent)

Description copied from class: PdfAChecker

Checks whether the rendering intent of the document is within the allowed range of intents. This is defined in ISO 19005-1 section 6.2.9, and unchanged in newer generations of the PDF/A specification.

Specified by:

checkRenderingIntent in class PdfAChecker

Parameters:

intent - the intent to be analyzed

checkFont

public void checkFont(PdfFont pdfFont)

Description copied from class: PdfAChecker

Performs a number of checks on the font. See ISO 19005-1 section 6.3, ISO 19005-2 and ISO 19005-3 section 6.2.11. Be aware that not all constraints defined in the ISO are checked in this method, for most of them we consider that iText always creates valid fonts.

Specified by:

checkFont in class PdfAChecker

Parameters:

pdfFont - font to be checked

checkPageTransparency

protected void checkPageTransparency(PdfDictionary pageDict,
                                     PdfDictionary pageResources)

Specified by:

checkPageTransparency in class PdfAChecker

checkContentStream

protected void checkContentStream(PdfStream contentStream)

Description copied from class: PdfAChecker

Attest content stream conformance with appropriate specification. Throws PdfAConformanceException if any discrepancy was found

Specified by:

checkContentStream in class PdfAChecker

Parameters:

contentStream - is a content stream to validate

checkContentStreamObject

protected void checkContentStreamObject(PdfObject object)

Description copied from class: PdfAChecker

Verify the conformity of the operand of content stream with appropriate specification. Throws PdfAConformanceException if any discrepancy was found

Specified by:

checkContentStreamObject in class PdfAChecker

Parameters:

object - is an operand of content stream to validate

checkNonSymbolicTrueTypeFont

protected void checkNonSymbolicTrueTypeFont(PdfTrueTypeFont trueTypeFont)

Specified by:

checkNonSymbolicTrueTypeFont in class PdfAChecker

checkSymbolicTrueTypeFont

protected void checkSymbolicTrueTypeFont(PdfTrueTypeFont trueTypeFont)

Specified by:

checkSymbolicTrueTypeFont in class PdfAChecker

checkImage

protected void checkImage(PdfStream image,
                          PdfDictionary currentColorSpaces)

Specified by:

checkImage in class PdfAChecker

checkFormXObject

protected void checkFormXObject(PdfStream form)

Specified by:

checkFormXObject in class PdfAChecker

checkLogicalStructure

protected void checkLogicalStructure(PdfDictionary catalog)

Specified by:

checkLogicalStructure in class PdfAChecker

checkMetaData

protected void checkMetaData(PdfDictionary catalog)

Specified by:

checkMetaData in class PdfAChecker

checkOutputIntents

protected void checkOutputIntents(PdfDictionary catalog)

Specified by:

checkOutputIntents in class PdfAChecker

checkPdfNumber

protected void checkPdfNumber(PdfNumber number)

Specified by:

checkPdfNumber in class PdfAChecker

getMaxRealValue

protected double getMaxRealValue()

Retrieve maximum allowed real value.

Returns:

maximum allowed real number

getMaxIntegerValue

protected long getMaxIntegerValue()

Retrieve maximal allowed integer value.

Returns:

maximal allowed integer number

getMinIntegerValue

protected long getMinIntegerValue()

Retrieve minimal allowed integer value.

Returns:

minimal allowed integer number

checkPdfArray

protected void checkPdfArray(PdfArray array)

Specified by:

checkPdfArray in class PdfAChecker

checkPdfDictionary

protected void checkPdfDictionary(PdfDictionary dictionary)

Specified by:

checkPdfDictionary in class PdfAChecker

checkPdfStream

protected void checkPdfStream(PdfStream stream)

Specified by:

checkPdfStream in class PdfAChecker

checkPdfName

protected void checkPdfName(PdfName name)

Specified by:

checkPdfName in class PdfAChecker

getMaxNameLength

protected int getMaxNameLength()

Retrieve maximum allowed length of the name object.

Returns:

maximum allowed length of the name

checkPdfString

protected void checkPdfString(PdfString string)

Specified by:

checkPdfString in class PdfAChecker

getMaxStringLength

protected int getMaxStringLength()

checkPageSize

protected void checkPageSize(PdfDictionary page)

Specified by:

checkPageSize in class PdfAChecker

checkFileSpec

protected void checkFileSpec(PdfDictionary fileSpec)

Specified by:

checkFileSpec in class PdfAChecker

checkAnnotation

protected void checkAnnotation(PdfDictionary annotDic)

Specified by:

checkAnnotation in class PdfAChecker

checkForm

protected void checkForm(PdfDictionary form)

Specified by:

checkForm in class PdfAChecker

checkAction

protected void checkAction(PdfDictionary action)

Specified by:

checkAction in class PdfAChecker

checkCatalogValidEntries

protected void checkCatalogValidEntries(PdfDictionary catalogDict)

Specified by:

checkCatalogValidEntries in class PdfAChecker

checkPageObject

protected void checkPageObject(PdfDictionary pageDict,
                               PdfDictionary pageResources)

Specified by:

checkPageObject in class PdfAChecker

checkTrailer

protected void checkTrailer(PdfDictionary trailer)

Specified by:

checkTrailer in class PdfAChecker

getFormFields

protected PdfArray getFormFields(PdfArray array)