Package org.apache.fontbox.cmap

Class CMapParser

  • public class CMapParser
extends java.lang.Object
    Parses a CMap stream.

    • Field Detail

      • MARK_END_OF_DICTIONARY

        private static final java.lang.String MARK_END_OF_DICTIONARY
        See Also:
        Constant Field Values

      • MARK_END_OF_ARRAY

        private static final java.lang.String MARK_END_OF_ARRAY
        See Also:
        Constant Field Values

      • tokenParserByteBuffer

        private final byte[] tokenParserByteBuffer

      • strictMode

        private boolean strictMode

    • Constructor Detail

      • CMapParser

        public CMapParser()
        Creates a new instance of CMapParser.

      • CMapParser

        public CMapParser​(boolean strictMode)
        Creates a new instance of CMapParser.
        Parameters:
        strictMode - activates the strict mode used for inline CMaps

    • Method Detail

      • parsePredefined

        public CMap parsePredefined​(java.lang.String name)
                     throws java.io.IOException
        Parses a predefined CMap.
        Parameters:
        name - CMap name.
        Returns:
        The parsed predefined CMap as a java object, never null.
        Throws:
        java.io.IOException - If the CMap could not be parsed.

      • parse

        public CMap parse​(RandomAccessRead randomAccessRead)
           throws java.io.IOException
        This will parse the stream and create a cmap object.
        Parameters:
        randomAccessRead - the source of the CMap to be parsed.
        Returns:
        The parsed source as a java object, never null.
        Throws:
        java.io.IOException - If there is an error parsing the data.

      • parseUsecmap

        private void parseUsecmap​(CMapParser.LiteralName useCmapName,
                          CMap result)
                   throws java.io.IOException
        Throws:
        java.io.IOException

      • checkExpectedOperator

        private void checkExpectedOperator​(CMapParser.Operator operator,
                                   java.lang.String expectedOperatorName,
                                   java.lang.String rangeName)
                            throws java.io.IOException
        Throws an IOException if expectedOperatorName not equals operator.op
        Parameters:
        operator - Instance of operator
        expectedOperatorName - Expected name of operator
        rangeName - The name of the range in which the operator is expected (without a tilde character), to be used in the exception message.
        Throws:
        java.io.IOException - if expectedOperatorName not equals operator.op

      • parseBegincodespacerange

        private void parseBegincodespacerange​(java.lang.Number cosCount,
                                      RandomAccessRead randomAccessRead,
                                      CMap result)
                               throws java.io.IOException
        Throws:
        java.io.IOException

      • parseBeginbfchar

        private void parseBeginbfchar​(java.lang.Number cosCount,
                              RandomAccessRead randomAccessRead,
                              CMap result)
                       throws java.io.IOException
        Throws:
        java.io.IOException

      • parseBegincidrange

        private void parseBegincidrange​(int numberOfLines,
                                RandomAccessRead randomAccessRead,
                                CMap result)
                         throws java.io.IOException
        Throws:
        java.io.IOException

      • parseBegincidchar

        private void parseBegincidchar​(java.lang.Number cosCount,
                               RandomAccessRead randomAccessRead,
                               CMap result)
                        throws java.io.IOException
        Throws:
        java.io.IOException

      • parseBeginbfrange

        private void parseBeginbfrange​(java.lang.Number cosCount,
                               RandomAccessRead randomAccessRead,
                               CMap result)
                        throws java.io.IOException
        Throws:
        java.io.IOException

      • addMappingFrombfrange

        private void addMappingFrombfrange​(CMap cmap,
                                   byte[] startCode,
                                   java.util.List<byte[]> tokenBytesList)

      • addMappingFrombfrange

        private void addMappingFrombfrange​(CMap cmap,
                                   byte[] startCode,
                                   int values,
                                   byte[] tokenBytes)

      • getExternalCMap

        private RandomAccessRead getExternalCMap​(java.lang.String name)
                                  throws java.io.IOException
        Returns a RandomAccessRead containing the given "use" CMap.
        Parameters:
        name - Name of the given "use" CMap resource.
        Throws:
        java.io.IOException - if the CMap resource doesn't exist or if there is an error opening it.

      • parseNextToken

        private java.lang.Object parseNextToken​(RandomAccessRead randomAccessRead)
                                 throws java.io.IOException
        Throws:
        java.io.IOException

      • parseInteger

        private java.lang.Integer parseInteger​(RandomAccessRead randomAccessRead)
                                throws java.io.IOException
        Throws:
        java.io.IOException

      • parseByteArray

        private byte[] parseByteArray​(RandomAccessRead randomAccessRead)
                       throws java.io.IOException
        Throws:
        java.io.IOException

      • readArray

        private java.util.List<java.lang.Object> readArray​(RandomAccessRead randomAccessRead)
                                            throws java.io.IOException
        Throws:
        java.io.IOException

      • readString

        private java.lang.String readString​(RandomAccessRead randomAccessRead)
                             throws java.io.IOException
        Throws:
        java.io.IOException

      • readLine

        private java.lang.String readLine​(RandomAccessRead randomAccessRead,
                                  int firstByte)
                           throws java.io.IOException
        Throws:
        java.io.IOException

      • readNumber

        private java.lang.Number readNumber​(RandomAccessRead randomAccessRead,
                                    int firstByte)
                             throws java.io.IOException
        Throws:
        java.io.IOException

      • readDictionary

        private java.lang.Object readDictionary​(RandomAccessRead randomAccessRead)
                                 throws java.io.IOException
        Throws:
        java.io.IOException

      • readUntilEndOfLine

        private void readUntilEndOfLine​(RandomAccessRead randomAccessRead,
                                java.lang.StringBuilder buf)
                         throws java.io.IOException
        Throws:
        java.io.IOException

      • isWhitespaceOrEOF

        private static boolean isWhitespaceOrEOF​(int aByte)

      • isDelimiter

        private static boolean isDelimiter​(int aByte)
        Is this a standard PDF delimiter character?

      • increment

        private static boolean increment​(byte[] data,
                                 int position,
                                 boolean useStrictMode)

      • createStringFromBytes

        private static java.lang.String createStringFromBytes​(byte[] bytes)