PreflightParser (PDFBox reactor 2.0.3 API)

java.lang.Object
- org.apache.pdfbox.pdfparser.BaseParser
- - org.apache.pdfbox.pdfparser.COSParser
  - - org.apache.pdfbox.pdfparser.PDFParser
    - - org.apache.pdfbox.preflight.parser.PreflightParser

public class PreflightParser
extends PDFParser

Field Summary

Fields
Modifier and Type	Field and Description
`protected PreflightContext`	`ctx`
`protected DataSource`	`dataSource`
`static Charset`	`encoding` Define a one byte encoding that hasn't specific encoding in UTF-8 charset.
`protected PreflightDocument`	`preflightDocument`
`protected ValidationResult`	`validationResult`

Fields inherited from class org.apache.pdfbox.pdfparser.COSParser
EOF_MARKER, fileLen, initialParseDone, OBJ_MARKER, securityHandler, source, SYSPROP_EOFLOOKUPRANGE, SYSPROP_PARSEMINIMAL, TMP_FILE_PREFIX, xrefTrailerResolver

Fields inherited from class org.apache.pdfbox.pdfparser.BaseParser
A, ASCII_CR, ASCII_LF, B, D, DEF, document, E, ENDOBJ_STRING, ENDSTREAM_STRING, J, M, N, O, R, S, seqSource, STREAM_STRING, T

Constructor Summary

Constructors
Constructor and Description

PreflightParser(DataSource dataSource)
Constructor.

PreflightParser(File file)
Constructor.

PreflightParser(String filename)
Constructor.

Constructors
Constructor and Description
`PreflightParser(DataSource dataSource)` Constructor.
`PreflightParser(File file)` Constructor.
`PreflightParser(String filename)` Constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`addValidationError(ValidationResult.ValidationError error)` Add the error to the ValidationResult.
`protected void`	`addValidationErrors(List<ValidationResult.ValidationError> errors)`
`protected void`	`checkEndstreamKeyWord()` 'endstream' must be preceded by an EOL
`protected void`	`checkPdfHeader()` Check that the PDF header match rules of the PDF/A specification.
`protected void`	`checkStreamKeyWord()` 'stream' must be followed by <CR><LF> or only <LF>
`protected void`	`createContext()` Create a validation context.
`protected void`	`createPdfADocument(Format format, PreflightConfiguration config)`
`protected static ValidationResult`	`createUnknownErrorResult()` Create an instance of ValidationResult with a ValidationError(UNKNOWN_ERROR)
`PDDocument`	`getPDDocument()` This will get the PD document that was parsed.
`PreflightDocument`	`getPreflightDocument()`
`protected void`	`initialParse()` The initial parse will first parse only the trailer, the xrefstart and all xref tables to have a pointer (offset) to all the pdf's objects.
`protected int`	`lastIndexOf(char[] pattern, byte[] buf, int endOff)` Searches last appearance of pattern within buffer.
`void`	`parse()` This will parse the stream and populate the COSDocument object.
`void`	`parse(Format format)` Parse the given file and check if it is a confirming file according to the given format.
`void`	`parse(Format format, PreflightConfiguration config)` Parse the given file and check if it is a confirming file according to the given format.
`protected COSArray`	`parseCOSArray()` This will parse a PDF array object.
`protected COSName`	`parseCOSName()` This will parse a PDF name from the stream.
`protected COSStream`	`parseCOSStream(COSDictionary dic)` Wraps the `COSParser.parseCOSStream(org.apache.pdfbox.cos.COSDictionary)` to check rules on 'stream' and 'endstream' keywords.
`protected COSString`	`parseCOSString()` Check that the hexa string contains only an even number of Hexadecimal characters.
`protected COSBase`	`parseDirObject()` Call `BaseParser.parseDirObject()` check limit range for Float, Integer and number of Dictionary entries.
`protected COSBase`	`parseObjectDynamically(long objNr, int objGenNr, boolean requireExistingNotCompressedObj)` This will parse the next object from the stream and add it to the local state.
`protected boolean`	`parseXrefTable(long startByteOffset)` Same method than the COSParser.parseXrefTable(long) with additional controls : - EOL mandatory after the 'xref' keyword - Cross reference subsection header uses single white space as separator - and so on

Methods inherited from class org.apache.pdfbox.pdfparser.COSParser
getDocument, getStartxrefOffset, isLenient, parseDictObjects, parseFDFHeader, parseObjectDynamically, parsePDFHeader, parseTrailerValuesDynamically, parseXref, rebuildTrailer, setEOFLookupRange, setLenient

Methods inherited from class org.apache.pdfbox.pdfparser.BaseParser
isClosing, isClosing, isDigit, isDigit, isEndOfName, isEOL, isEOL, isSpace, isSpace, isWhitespace, isWhitespace, parseBoolean, parseCOSDictionary, readExpectedChar, readExpectedString, readExpectedString, readGenerationNumber, readInt, readLine, readLong, readObjectNumber, readString, readString, readStringNumber, skipSpaces, skipWhiteSpaces

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - encoding
```
public static final Charset encoding
```
    Define a one byte encoding that hasn't specific encoding in UTF-8 charset. Avoid unexpected error when the encoding is Cp5816
  - dataSource
```
protected DataSource dataSource
```
  - validationResult
```
protected ValidationResult validationResult
```
  - preflightDocument
```
protected PreflightDocument preflightDocument
```
  - ctx
```
protected PreflightContext ctx
```
- Constructor Detail
  - PreflightParser
```
public PreflightParser(File file)
                throws IOException
```
    Constructor.
    
    Parameters:
    file -
    
    Throws:
    
    IOException - if there is a reading error.
  - PreflightParser
```
public PreflightParser(String filename)
                throws IOException
```
    Constructor.
    
    Parameters:
    filename -
    
    Throws:
    
    IOException - if there is a reading error.
  - PreflightParser
```
public PreflightParser(DataSource dataSource)
                throws IOException
```
    Constructor. This one is slower than the file and the filename constructors, because a temporary file will be created.
    
    Parameters:
    dataSource - the datasource
    
    Throws:
    
    IOException - if there is a reading error.
- Method Detail
  - createUnknownErrorResult
```
protected static ValidationResult createUnknownErrorResult()
```
    Create an instance of ValidationResult with a ValidationError(UNKNOWN_ERROR)
    
    Returns:
    the ValidationError instance.
  - addValidationError
```
protected void addValidationError(ValidationResult.ValidationError error)
```
    Add the error to the ValidationResult. If the validationResult is null, an instance is created using the isWarning boolean of the ValidationError to know if the ValidationResult must be flagged as Valid.
    
    Parameters:
    error -
  - addValidationErrors
```
protected void addValidationErrors(List<ValidationResult.ValidationError> errors)
```
  - parse
```
public void parse()
           throws IOException
```
    Description copied from class: PDFParser
    
    This will parse the stream and populate the COSDocument object. This will close the keystore stream when it is done parsing.
    
    Overrides:
    
    parse in class PDFParser
    
    Throws:
    
    IOException - If there is an error reading from the stream or corrupt data is found.
  - parse
```
public void parse(Format format)
           throws IOException
```
    Parse the given file and check if it is a confirming file according to the given format.
    
    Parameters:
    format - format that the document should follow (default Format.PDF_A1B)
    
    Throws:
    
    IOException
  - parse
```
public void parse(Format format,
         PreflightConfiguration config)
           throws IOException
```
    Parse the given file and check if it is a confirming file according to the given format.
    
    Parameters:
    format - format that the document should follow (default Format.PDF_A1B)
    config - Configuration bean that will be used by the PreflightDocument. If null the format is used to determine the default configuration.
    
    Throws:
    
    IOException
  - createPdfADocument
```
protected void createPdfADocument(Format format,
                      PreflightConfiguration config)
                           throws IOException
```
    Throws:
    
    IOException
  - createContext
```
protected void createContext()
```
    Create a validation context. This context is set to the PreflightDocument.
  - getPDDocument
```
public PDDocument getPDDocument()
                         throws IOException
```
    Description copied from class: PDFParser
    
    This will get the PD document that was parsed. When you are done with this document you must call close() on it to release resources.
    
    Overrides:
    
    getPDDocument in class PDFParser
    
    Returns:
    The document at the PD layer.
    
    Throws:
    
    IOException - If there is an error getting the document.
  - getPreflightDocument
```
public PreflightDocument getPreflightDocument()
                                       throws IOException
```
    Throws:
    
    IOException
  - initialParse
```
protected void initialParse()
                     throws IOException
```
    Description copied from class: PDFParser
    
    The initial parse will first parse only the trailer, the xrefstart and all xref tables to have a pointer (offset) to all the pdf's objects. It can handle linearized pdfs, which will have an xref at the end pointing to an xref at the beginning of the file. Last the root object is parsed.
    
    Overrides:
    
    initialParse in class PDFParser
    
    Throws:
    
    IOException - If something went wrong.
  - checkPdfHeader
```
protected void checkPdfHeader()
```
    Check that the PDF header match rules of the PDF/A specification. First line (offset 0) must be a comment with the PDF version (version 1.0 isn't conform to the PDF/A specification) Second line is a comment with at least 4 bytes greater than 0x80
  - parseXrefTable
```
protected boolean parseXrefTable(long startByteOffset)
                          throws IOException
```
    Same method than the COSParser.parseXrefTable(long) with additional controls : - EOL mandatory after the 'xref' keyword - Cross reference subsection header uses single white space as separator - and so on
    
    Overrides:
    
    parseXrefTable in class COSParser
    
    Parameters:
    startByteOffset - the offset to start at
    
    Returns:
    false on parsing error
    
    Throws:
    
    IOException - If an IO error occurs.
  - parseCOSStream
```
protected COSStream parseCOSStream(COSDictionary dic)
                            throws IOException
```
    Wraps the COSParser.parseCOSStream(org.apache.pdfbox.cos.COSDictionary) to check rules on 'stream' and 'endstream' keywords. checkStreamKeyWord() and checkEndstreamKeyWord()
    
    Overrides:
    
    parseCOSStream in class COSParser
    
    Parameters:
    dic - dictionary that goes with this stream.
    
    Returns:
    parsed pdf stream.
    
    Throws:
    
    IOException - if an error occurred reading the stream, like problems with reading length attribute, stream does not end with 'endstream' after data read, stream too short etc.
  - checkStreamKeyWord
```
protected void checkStreamKeyWord()
                           throws IOException
```
    'stream' must be followed by <CR><LF> or only <LF>
    
    Throws:
    
    IOException
  - checkEndstreamKeyWord
```
protected void checkEndstreamKeyWord()
                              throws IOException
```
    'endstream' must be preceded by an EOL
    
    Throws:
    
    IOException
  - parseCOSArray
```
protected COSArray parseCOSArray()
                          throws IOException
```
    Description copied from class: BaseParser
    
    This will parse a PDF array object.
    
    Overrides:
    
    parseCOSArray in class BaseParser
    
    Returns:
    The parsed PDF array.
    
    Throws:
    
    IOException - If there is an error parsing the stream.
  - parseCOSName
```
protected COSName parseCOSName()
                        throws IOException
```
    Description copied from class: BaseParser
    
    This will parse a PDF name from the stream.
    
    Overrides:
    
    parseCOSName in class BaseParser
    
    Returns:
    The parsed PDF name.
    
    Throws:
    
    IOException - If there is an error reading from the stream.
  - parseCOSString
```
protected COSString parseCOSString()
                            throws IOException
```
    Check that the hexa string contains only an even number of Hexadecimal characters. Once it is done, reset the offset at the beginning of the string and call BaseParser.parseCOSString()
    
    Overrides:
    
    parseCOSString in class BaseParser
    
    Returns:
    The parsed PDF string.
    
    Throws:
    
    IOException - If there is an error reading from the stream.
  - parseDirObject
```
protected COSBase parseDirObject()
                          throws IOException
```
    Call BaseParser.parseDirObject() check limit range for Float, Integer and number of Dictionary entries.
    
    Overrides:
    
    parseDirObject in class BaseParser
    
    Returns:
    The parsed object.
    
    Throws:
    
    IOException - if there is an error during parsing.
  - parseObjectDynamically
```
protected COSBase parseObjectDynamically(long objNr,
                             int objGenNr,
                             boolean requireExistingNotCompressedObj)
                                  throws IOException
```
    Description copied from class: COSParser
    
    This will parse the next object from the stream and add it to the local state. It's reduced to parsing an indirect object.
    
    Overrides:
    
    parseObjectDynamically in class COSParser
    
    Parameters:
    objNr - object number of object to be parsed
    objGenNr - object generation number of object to be parsed
    requireExistingNotCompressedObj - if true the object to be parsed must be defined in xref (comment: null objects may be missing from xref) and it must not be a compressed object within object stream (this is used to circumvent being stuck in a loop in a malicious PDF)
    
    Returns:
    the parsed object (which is also added to document object)
    
    Throws:
    
    IOException - If an IO error occurs.
  - lastIndexOf
```
protected int lastIndexOf(char[] pattern,
              byte[] buf,
              int endOff)
```
    Description copied from class: COSParser
    
    Searches last appearance of pattern within buffer. Lookup before _lastOff and goes back until 0.
    
    Overrides:
    
    lastIndexOf in class COSParser
    
    Parameters:
    pattern - pattern to search for
    buf - buffer to search pattern in
    endOff - offset (exclusive) where lookup starts at
    
    Returns:
    start offset of pattern within buffer or -1 if pattern could not be found

Class PreflightParser

Field Summary

Fields inherited from class org.apache.pdfbox.pdfparser.COSParser

Fields inherited from class org.apache.pdfbox.pdfparser.BaseParser

Constructor Summary

Method Summary

Methods inherited from class org.apache.pdfbox.pdfparser.COSParser

Methods inherited from class org.apache.pdfbox.pdfparser.BaseParser

Methods inherited from class java.lang.Object

Field Detail

encoding

dataSource

validationResult

preflightDocument

ctx

Constructor Detail

PreflightParser

PreflightParser

PreflightParser

Method Detail

createUnknownErrorResult

addValidationError

addValidationErrors

parse

parse

parse

createPdfADocument

createContext

getPDDocument

getPreflightDocument

initialParse

checkPdfHeader

parseXrefTable

parseCOSStream

checkStreamKeyWord

checkEndstreamKeyWord

parseCOSArray

parseCOSName

parseCOSString

parseDirObject

parseObjectDynamically

lastIndexOf