Package com.ribs.pdf

Class LatinGlyphMapper

java.lang.Object
com.ribs.pdf.GlyphMapper
com.ribs.pdf.LatinGlyphMapper
public class LatinGlyphMapper extends GlyphMapper
A LatinGlyphMapper is a concrete subclass of GlyphMapper that can handle the standard pdf encodings that map single byte character codes from a named encoding, with possible modifications by a Differences array.

This class uses the java.nio.charset package to handle macRoman and winAnsi base encodings.

It can also handle a null encoding, which it does by using the adobestandard mapping. Note that this is the right thing for the standard fonts, but not exactly correct all the time. In PDF, a null encoding actually specifies the font's internal (1 byte) encoding.

  • Constructor Details

    • LatinGlyphMapper

      public LatinGlyphMapper(Map fontDict, PDFFile srcfile)

  • Method Details

    • canHandleEncoding

      public static boolean canHandleEncoding(String pdfEncodingName)

    • isMultiByte

      public boolean isMultiByte()
      Description copied from class: GlyphMapper
      Returns true if the encoding consumes more than single byte for a character. Note that encodings that sometimes maps single bytes, but other times maps more than one, should always return true for this routine.
      Specified by:
      isMultiByte in class GlyphMapper

    • maximumOutputBufferSize

      public int maximumOutputBufferSize(byte[] inbytes, int offset, int len)
      Description copied from class: GlyphMapper
      Quickly returns the maximum number of chars that could result from the conversion of inbytes bytes according to the encoding. A single byte encoding, like the latin ones, will take a single byte and convert it into a single char, so this routine would just return len. An encoding that takes 2 bytes and converts them to a char would return len/2, etc.
      Specified by:
      maximumOutputBufferSize in class GlyphMapper

    • mapBytesToChars

      public int mapBytesToChars(byte[] inbytes, int offset, int len, char[] outchars)
      Description copied from class: GlyphMapper
      The workhorse. Take an input buffer and convert everything. The output buffer should be allocated using the size from the above routine. The actual number of chars in the final output is returned.
      Specified by:
      mapBytesToChars in class GlyphMapper