/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.fontbox.cff;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Collection;
import java.util.Locale;
/**
* This class represents a formatter for a given Type1 font.
* @author Villu Ruusmann
* @version $Revision: 1.0 $
*/
public class Type1FontFormatter
{
private Type1FontFormatter()
{
}
/**
* Read and convert a given CFFFont.
* @param font the given CFFFont
* @return the Type1 font
* @throws IOException if an error occurs during reading the given font
*/
public static byte[] format(CFFFont font) throws IOException
{
DataOutput output = new DataOutput();
printFont(font, output);
return output.getBytes();
}
private static void printFont(CFFFont font, DataOutput output)
throws IOException
{
output.println("%!FontType1-1.0 " + font.getName() + " "
+ font.getProperty("version"));
printFontDictionary(font, output);
for (int i = 0; i < 8; i++)
{
StringBuilder sb = new StringBuilder();
for (int j = 0; j < 64; j++)
{
sb.append("0");
}
output.println(sb.toString());
}
output.println("cleartomark");
}
private static void printFontDictionary(CFFFont font, DataOutput output)
throws IOException
{
output.println("10 dict begin");
output.println("/FontInfo 10 dict dup begin");
output.println("/version (" + font.getProperty("version")
+ ") readonly def");
output.println("/Notice (" + font.getProperty("Notice")
+ ") readonly def");
output.println("/FullName (" + font.getProperty("FullName")
+ ") readonly def");
output.println("/FamilyName (" + font.getProperty("FamilyName")
+ ") readonly def");
output.println("/Weight (" + font.getProperty("Weight")
+ ") readonly def");
output.println("/ItalicAngle " + font.getProperty("ItalicAngle")
+ " def");
output.println("/isFixedPitch " + font.getProperty("isFixedPitch")
+ " def");
output.println("/UnderlinePosition "
+ font.getProperty("UnderlinePosition") + " def");
output.println("/UnderlineThickness "
+ font.getProperty("UnderlineThickness") + " def");
output.println("end readonly def");
output.println("/FontName /" + font.getName() + " def");
output.println("/PaintType " + font.getProperty("PaintType") + " def");
output.println("/FontType 1 def");
NumberFormat matrixFormat = new DecimalFormat("0.########", new DecimalFormatSymbols(Locale.US));
output.println("/FontMatrix "
+ formatArray(font.getProperty("FontMatrix"), matrixFormat, false)
+ " readonly def");
output.println("/FontBBox "
+ formatArray(font.getProperty("FontBBox"), false)
+ " readonly def");
output.println("/StrokeWidth " + font.getProperty("StrokeWidth")
+ " def");
Collection<CFFFont.Mapping> mappings = font.getMappings();
output.println("/Encoding 256 array");
output.println("0 1 255 {1 index exch /.notdef put} for");
for (CFFFont.Mapping mapping : mappings)
{
output.println("dup " + mapping.getCode() + " /"
+ mapping.getName() + " put");
}
output.println("readonly def");
output.println("currentdict end");
DataOutput eexecOutput = new DataOutput();
printEexecFontDictionary(font, eexecOutput);
output.println("currentfile eexec");
byte[] eexecBytes = Type1FontUtil.eexecEncrypt(eexecOutput.getBytes());
String hexString = Type1FontUtil.hexEncode(eexecBytes);
for (int i = 0; i < hexString.length();)
{
String hexLine = hexString.substring(i, Math.min(i + 72, hexString
.length()));
output.println(hexLine);
i += hexLine.length();
}
}
private static void printEexecFontDictionary(CFFFont font, DataOutput output)
throws IOException
{
output.println("dup /Private 15 dict dup begin");
output
.println("/RD {string currentfile exch readstring pop} executeonly def");
output.println("/ND {noaccess def} executeonly def");
output.println("/NP {noaccess put} executeonly def");
output.println("/BlueValues "
+ formatArray(font.getProperty("BlueValues"), true) + " ND");
output.println("/OtherBlues "
+ formatArray(font.getProperty("OtherBlues"), true) + " ND");
output.println("/BlueScale " + font.getProperty("BlueScale") + " def");
output.println("/BlueShift " + font.getProperty("BlueShift") + " def");
output.println("/BlueFuzz " + font.getProperty("BlueFuzz") + " def");
output.println("/StdHW " + formatArray(font.getProperty("StdHW"), true)
+ " ND");
output.println("/StdVW " + formatArray(font.getProperty("StdVW"), true)
+ " ND");
output.println("/ForceBold " + font.getProperty("ForceBold") + " def");
output.println("/MinFeature {16 16} def");
output.println("/password 5839 def");
Collection<CFFFont.Mapping> mappings = font.getMappings();
output.println("2 index /CharStrings " + mappings.size()
+ " dict dup begin");
Type1CharStringFormatter formatter = new Type1CharStringFormatter();
for (CFFFont.Mapping mapping : mappings)
{
byte[] type1Bytes = formatter.format(mapping.toType1Sequence());
byte[] charstringBytes = Type1FontUtil.charstringEncrypt(
type1Bytes, 4);
output.print("/" + mapping.getName() + " " + charstringBytes.length
+ " RD ");
output.write(charstringBytes);
output.print(" ND");
output.println();
}
output.println("end");
output.println("end");
output.println("readonly put");
output.println("noaccess put");
output.println("dup /FontName get exch definefont pop");
output.println("mark currentfile closefile");
}
private static String formatArray(Object object, boolean executable)
{
return formatArray(object, null, executable);
}
private static String formatArray(Object object, NumberFormat format, boolean executable)
{
StringBuffer sb = new StringBuffer();
sb.append(executable ? "{" : "[");
if (object instanceof Collection)
{
String sep = "";
Collection<?> elements = (Collection<?>) object;
for (Object element : elements)
{
sb.append(sep).append(formatElement(element, format));
sep = " ";
}
}
else if (object instanceof Number)
{
sb.append(formatElement(object, format));
}
sb.append(executable ? "}" : "]");
return sb.toString();
}
private static String formatElement(Object object, NumberFormat format)
{
if(format != null)
{
if (object instanceof Double || object instanceof Float)
{
Number number = (Number)object;
return format.format(number.doubleValue());
}
else if (object instanceof Long || object instanceof Integer)
{
Number number = (Number)object;
return format.format(number.longValue());
}
}
return String.valueOf(object);
}
}