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iText, a free Java-PDF library
/*
*
* Copyright 2003 Sivan Toledo
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
*/
/*
* Comments by Sivan Toledo:
* I created this class in order to add to iText the ability to utilize
* OpenType fonts with CFF glyphs (these usually have an .otf extension).
* The CFF font within the CFF table of the OT font might be either a CID
* or a Type1 font. (CFF fonts may also contain multiple fonts; I do not
* know if this is allowed in an OT table). The PDF spec, however, only
* allow a CID font with an Identity-H or Identity-V encoding. Otherwise,
* you are limited to an 8-bit encoding.
* Adobe fonts come in both flavors. That is, the OTFs sometimes have
* a CID CFF inside (for Japanese fonts), and sometimes a Type1 CFF
* (virtually all the others, Latin/Greek/Cyrillic). So to easily use
* all the glyphs in the latter, without creating multiple 8-bit encoding,
* I wrote this class, whose main purpose is to convert a Type1 font inside
* a CFF container (which might include other fonts) into a CID CFF font
* that can be directly embeded in the PDF.
*
* Limitations of the current version:
* 1. It does not extract a single CID font from a CFF that contains that
* particular CID along with other fonts. The Adobe Japanese OTF's that
* I have only have one font in the CFF table, so these can be
* embeded in the PDF as is.
* 2. It does not yet subset fonts.
* 3. It may or may not work on CFF fonts that are not within OTF's.
* I didn't try that. In any case, that would probably only be
* useful for subsetting CID fonts, not for CFF Type1 fonts (I don't
* think there are any available.
* I plan to extend the class to support these three features at some
* future time.
*/
package com.lowagie.text.pdf;
import java.util.Iterator;
import java.util.LinkedList;
import com.lowagie.text.ExceptionConverter;
public class CFFFont {
static final String operatorNames[] = {
"version", "Notice", "FullName", "FamilyName",
"Weight", "FontBBox", "BlueValues", "OtherBlues",
"FamilyBlues", "FamilyOtherBlues", "StdHW", "StdVW",
"UNKNOWN_12", "UniqueID", "XUID", "charset",
"Encoding", "CharStrings", "Private", "Subrs",
"defaultWidthX", "nominalWidthX", "UNKNOWN_22", "UNKNOWN_23",
"UNKNOWN_24", "UNKNOWN_25", "UNKNOWN_26", "UNKNOWN_27",
"UNKNOWN_28", "UNKNOWN_29", "UNKNOWN_30", "UNKNOWN_31",
"Copyright", "isFixedPitch", "ItalicAngle", "UnderlinePosition",
"UnderlineThickness", "PaintType", "CharstringType", "FontMatrix",
"StrokeWidth", "BlueScale", "BlueShift", "BlueFuzz",
"StemSnapH", "StemSnapV", "ForceBold", "UNKNOWN_12_15",
"UNKNOWN_12_16", "LanguageGroup", "ExpansionFactor", "initialRandomSeed",
"SyntheticBase", "PostScript", "BaseFontName", "BaseFontBlend",
"UNKNOWN_12_24", "UNKNOWN_12_25", "UNKNOWN_12_26", "UNKNOWN_12_27",
"UNKNOWN_12_28", "UNKNOWN_12_29", "ROS", "CIDFontVersion",
"CIDFontRevision", "CIDFontType", "CIDCount", "UIDBase",
"FDArray", "FDSelect", "FontName"
};
static final String standardStrings[] = {
// Automatically generated from Appendix A of the CFF specification; do
// not edit. Size should be 391.
".notdef", "space", "exclam", "quotedbl", "numbersign", "dollar",
"percent", "ampersand", "quoteright", "parenleft", "parenright",
"asterisk", "plus", "comma", "hyphen", "period", "slash", "zero", "one",
"two", "three", "four", "five", "six", "seven", "eight", "nine", "colon",
"semicolon", "less", "equal", "greater", "question", "at", "A", "B", "C",
"D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "bracketleft", "backslash",
"bracketright", "asciicircum", "underscore", "quoteleft", "a", "b", "c",
"d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r",
"s", "t", "u", "v", "w", "x", "y", "z", "braceleft", "bar", "braceright",
"asciitilde", "exclamdown", "cent", "sterling", "fraction", "yen",
"florin", "section", "currency", "quotesingle", "quotedblleft",
"guillemotleft", "guilsinglleft", "guilsinglright", "fi", "fl", "endash",
"dagger", "daggerdbl", "periodcentered", "paragraph", "bullet",
"quotesinglbase", "quotedblbase", "quotedblright", "guillemotright",
"ellipsis", "perthousand", "questiondown", "grave", "acute", "circumflex",
"tilde", "macron", "breve", "dotaccent", "dieresis", "ring", "cedilla",
"hungarumlaut", "ogonek", "caron", "emdash", "AE", "ordfeminine", "Lslash",
"Oslash", "OE", "ordmasculine", "ae", "dotlessi", "lslash", "oslash", "oe",
"germandbls", "onesuperior", "logicalnot", "mu", "trademark", "Eth",
"onehalf", "plusminus", "Thorn", "onequarter", "divide", "brokenbar",
"degree", "thorn", "threequarters", "twosuperior", "registered", "minus",
"eth", "multiply", "threesuperior", "copyright", "Aacute", "Acircumflex",
"Adieresis", "Agrave", "Aring", "Atilde", "Ccedilla", "Eacute",
"Ecircumflex", "Edieresis", "Egrave", "Iacute", "Icircumflex", "Idieresis",
"Igrave", "Ntilde", "Oacute", "Ocircumflex", "Odieresis", "Ograve",
"Otilde", "Scaron", "Uacute", "Ucircumflex", "Udieresis", "Ugrave",
"Yacute", "Ydieresis", "Zcaron", "aacute", "acircumflex", "adieresis",
"agrave", "aring", "atilde", "ccedilla", "eacute", "ecircumflex",
"edieresis", "egrave", "iacute", "icircumflex", "idieresis", "igrave",
"ntilde", "oacute", "ocircumflex", "odieresis", "ograve", "otilde",
"scaron", "uacute", "ucircumflex", "udieresis", "ugrave", "yacute",
"ydieresis", "zcaron", "exclamsmall", "Hungarumlautsmall",
"dollaroldstyle", "dollarsuperior", "ampersandsmall", "Acutesmall",
"parenleftsuperior", "parenrightsuperior", "twodotenleader",
"onedotenleader", "zerooldstyle", "oneoldstyle", "twooldstyle",
"threeoldstyle", "fouroldstyle", "fiveoldstyle", "sixoldstyle",
"sevenoldstyle", "eightoldstyle", "nineoldstyle", "commasuperior",
"threequartersemdash", "periodsuperior", "questionsmall", "asuperior",
"bsuperior", "centsuperior", "dsuperior", "esuperior", "isuperior",
"lsuperior", "msuperior", "nsuperior", "osuperior", "rsuperior",
"ssuperior", "tsuperior", "ff", "ffi", "ffl", "parenleftinferior",
"parenrightinferior", "Circumflexsmall", "hyphensuperior", "Gravesmall",
"Asmall", "Bsmall", "Csmall", "Dsmall", "Esmall", "Fsmall", "Gsmall",
"Hsmall", "Ismall", "Jsmall", "Ksmall", "Lsmall", "Msmall", "Nsmall",
"Osmall", "Psmall", "Qsmall", "Rsmall", "Ssmall", "Tsmall", "Usmall",
"Vsmall", "Wsmall", "Xsmall", "Ysmall", "Zsmall", "colonmonetary",
"onefitted", "rupiah", "Tildesmall", "exclamdownsmall", "centoldstyle",
"Lslashsmall", "Scaronsmall", "Zcaronsmall", "Dieresissmall", "Brevesmall",
"Caronsmall", "Dotaccentsmall", "Macronsmall", "figuredash",
"hypheninferior", "Ogoneksmall", "Ringsmall", "Cedillasmall",
"questiondownsmall", "oneeighth", "threeeighths", "fiveeighths",
"seveneighths", "onethird", "twothirds", "zerosuperior", "foursuperior",
"fivesuperior", "sixsuperior", "sevensuperior", "eightsuperior",
"ninesuperior", "zeroinferior", "oneinferior", "twoinferior",
"threeinferior", "fourinferior", "fiveinferior", "sixinferior",
"seveninferior", "eightinferior", "nineinferior", "centinferior",
"dollarinferior", "periodinferior", "commainferior", "Agravesmall",
"Aacutesmall", "Acircumflexsmall", "Atildesmall", "Adieresissmall",
"Aringsmall", "AEsmall", "Ccedillasmall", "Egravesmall", "Eacutesmall",
"Ecircumflexsmall", "Edieresissmall", "Igravesmall", "Iacutesmall",
"Icircumflexsmall", "Idieresissmall", "Ethsmall", "Ntildesmall",
"Ogravesmall", "Oacutesmall", "Ocircumflexsmall", "Otildesmall",
"Odieresissmall", "OEsmall", "Oslashsmall", "Ugravesmall", "Uacutesmall",
"Ucircumflexsmall", "Udieresissmall", "Yacutesmall", "Thornsmall",
"Ydieresissmall", "001.000", "001.001", "001.002", "001.003", "Black",
"Bold", "Book", "Light", "Medium", "Regular", "Roman", "Semibold"
};
//private String[] strings;
public String getString(char sid) {
if (sid < standardStrings.length) return standardStrings[sid];
if (sid >= standardStrings.length+(stringOffsets.length-1)) return null;
int j = sid - standardStrings.length;
//java.lang.System.err.println("going for "+j);
int p = getPosition();
seek(stringOffsets[j]);
StringBuffer s = new StringBuffer();
for (int k=stringOffsets[j]; k count in the index header. 1->offset size in index header
+ 2+1
//offset array size * offset size
+ (count+1)*indexOffSize
//???zero <-> one base
- 1
// read object offset relative to object array base
+ getOffset(indexOffSize);
}
//nextIndexOffset = offsets[count];
return offsets;
}
protected String key;
protected Object[] args = new Object[48];
protected int arg_count = 0;
protected void getDictItem() {
for (int i=0; i= 32 && b0 <= 246) {
byte item = (byte) (b0-139);
args[arg_count] = new Integer(item);
arg_count++;
//System.err.println(item+" ");
continue;
}
if (b0 >= 247 && b0 <= 250) {
char b1 = getCard8();
short item = (short) ((b0-247)*256+b1+108);
args[arg_count] = new Integer(item);
arg_count++;
//System.err.println(item+" ");
continue;
}
if (b0 >= 251 && b0 <= 254) {
char b1 = getCard8();
short item = (short) (-(b0-251)*256-b1-108);
args[arg_count] = new Integer(item);
arg_count++;
//System.err.println(item+" ");
continue;
}
if (b0 == 30) {
String item = "";
boolean done = false;
char buffer = 0;
byte avail = 0;
int nibble = 0;
while (!done) {
// get a nibble
if (avail==0) { buffer = getCard8(); avail=2; }
if (avail==1) { nibble = (buffer / 16); avail--; }
if (avail==2) { nibble = (buffer % 16); avail--; }
switch (nibble) {
case 0xa: item += "." ; break;
case 0xb: item += "E" ; break;
case 0xc: item += "E-"; break;
case 0xe: item += "-" ; break;
case 0xf: done=true ; break;
default:
if (nibble >= 0 && nibble <= 9)
item += String.valueOf(nibble);
else {
item += "';
done = true;
}
break;
}
}
args[arg_count] = item;
arg_count++;
//System.err.println(" real=["+item+"]");
continue;
}
if (b0 <= 21) {
gotKey=true;
if (b0 != 12) key = operatorNames[b0];
else key = operatorNames[32 + getCard8()];
//for (int i=0; i>> 24) & 0xff);
i++;
case 3:
buffer[myOffset+i] = (byte) ((value >>> 16) & 0xff);
i++;
case 2:
buffer[myOffset+i] = (byte) ((value >>> 8) & 0xff);
i++;
case 1:
buffer[myOffset+i] = (byte) ((value >>> 0) & 0xff);
i++;
}
/*
int mask = 0xff;
for (int i=size-1; i>=0; i--) {
buffer[myOffset+i] = (byte) (value & mask);
mask <<= 8;
}
*/
}
}
static protected final class IndexBaseItem extends Item {
public IndexBaseItem() {}
}
static protected final class IndexMarkerItem extends Item {
private OffsetItem offItem;
private IndexBaseItem indexBase;
public IndexMarkerItem(OffsetItem offItem, IndexBaseItem indexBase) {
this.offItem = offItem;
this.indexBase = indexBase;
}
public void xref() {
//System.err.println("index marker item, base="+indexBase.myOffset+" my="+this.myOffset);
offItem.set(this.myOffset-indexBase.myOffset+1);
}
}
/**
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Generation - Code and Comments
*/
static protected final class SubrMarkerItem extends Item {
private OffsetItem offItem;
private IndexBaseItem indexBase;
public SubrMarkerItem(OffsetItem offItem, IndexBaseItem indexBase) {
this.offItem = offItem;
this.indexBase = indexBase;
}
public void xref() {
//System.err.println("index marker item, base="+indexBase.myOffset+" my="+this.myOffset);
offItem.set(this.myOffset-indexBase.myOffset);
}
}
/** an unknown offset in a dictionary for the list.
* We will fix up the offset later; for now, assume it's large.
*/
static protected final class DictOffsetItem extends OffsetItem {
public final int size;
public DictOffsetItem() {this.size=5; }
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += size;
}
// this is incomplete!
public void emit(byte[] buffer) {
if (size==5) {
buffer[myOffset] = 29;
buffer[myOffset+1] = (byte) ((value >>> 24) & 0xff);
buffer[myOffset+2] = (byte) ((value >>> 16) & 0xff);
buffer[myOffset+3] = (byte) ((value >>> 8) & 0xff);
buffer[myOffset+4] = (byte) ((value >>> 0) & 0xff);
}
}
}
/** Card24 item.
*/
static protected final class UInt24Item extends Item {
public int value;
public UInt24Item(int value) {this.value=value;}
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += 3;
}
// this is incomplete!
public void emit(byte[] buffer) {
buffer[myOffset+0] = (byte) ((value >>> 16) & 0xff);
buffer[myOffset+1] = (byte) ((value >>> 8) & 0xff);
buffer[myOffset+2] = (byte) ((value >>> 0) & 0xff);
}
}
/** Card32 item.
*/
static protected final class UInt32Item extends Item {
public int value;
public UInt32Item(int value) {this.value=value;}
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += 4;
}
// this is incomplete!
public void emit(byte[] buffer) {
buffer[myOffset+0] = (byte) ((value >>> 24) & 0xff);
buffer[myOffset+1] = (byte) ((value >>> 16) & 0xff);
buffer[myOffset+2] = (byte) ((value >>> 8) & 0xff);
buffer[myOffset+3] = (byte) ((value >>> 0) & 0xff);
}
}
/** A SID or Card16 item.
*/
static protected final class UInt16Item extends Item {
public char value;
public UInt16Item(char value) {this.value=value;}
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += 2;
}
// this is incomplete!
public void emit(byte[] buffer) {
buffer[myOffset+0] = (byte) ((value >>> 8) & 0xff);
buffer[myOffset+1] = (byte) ((value >>> 0) & 0xff);
}
}
/** A Card8 item.
*/
static protected final class UInt8Item extends Item {
public char value;
public UInt8Item(char value) {this.value=value;}
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += 1;
}
// this is incomplete!
public void emit(byte[] buffer) {
buffer[myOffset+0] = (byte) ((value >>> 0) & 0xff);
}
}
static protected final class StringItem extends Item {
public String s;
public StringItem(String s) {this.s=s;}
public void increment(int[] currentOffset) {
super.increment(currentOffset);
currentOffset[0] += s.length();
}
public void emit(byte[] buffer) {
for (int i=0; i>> 24) & 0xff);
buffer[myOffset+2] = (byte) ((value >>> 16) & 0xff);
buffer[myOffset+3] = (byte) ((value >>> 8) & 0xff);
buffer[myOffset+4] = (byte) ((value >>> 0) & 0xff);
}
}
}
/** An offset-marker item for the list.
* It is used to mark an offset and to set the offset list item.
*/
static protected final class MarkerItem extends Item {
OffsetItem p;
public MarkerItem(OffsetItem pointerToMarker) {p=pointerToMarker;}
public void xref() {
p.set(this.myOffset);
}
}
/** a utility that creates a range item for an entire index
*
* @param indexOffset where the index is
* @return a range item representing the entire index
*/
protected RangeItem getEntireIndexRange(int indexOffset) {
seek(indexOffset);
int count = getCard16();
if (count==0) {
return new RangeItem(buf,indexOffset,2);
} else {
int indexOffSize = getCard8();
seek(indexOffset+2+1+count*indexOffSize);
int size = getOffset(indexOffSize)-1;
return new RangeItem(buf,indexOffset,
2+1+(count+1)*indexOffSize+size);
}
}
/** get a single CID font. The PDF architecture (1.4)
* supports 16-bit strings only with CID CFF fonts, not
* in Type-1 CFF fonts, so we convert the font to CID if
* it is in the Type-1 format.
* Two other tasks that we need to do are to select
* only a single font from the CFF package (this again is
* a PDF restriction) and to subset the CharStrings glyph
* description.
*/
public byte[] getCID(String fontName)
//throws java.io.FileNotFoundException
{
int j;
for (j=0; j 127)
fdFontName = fdFontName.substring(0,127);
String extraStrings = "Adobe"+"Identity"+fdFontName;
int origStringsLen = stringOffsets[stringOffsets.length-1]
- stringOffsets[0];
int stringsBaseOffset = stringOffsets[0]-1;
byte stringsIndexOffSize;
if (origStringsLen+extraStrings.length() <= 0xff) stringsIndexOffSize = 1;
else if (origStringsLen+extraStrings.length() <= 0xffff) stringsIndexOffSize = 2;
else if (origStringsLen+extraStrings.length() <= 0xffffff) stringsIndexOffSize = 3;
else stringsIndexOffSize = 4;
l.addLast(new UInt16Item((char)((stringOffsets.length-1)+3))); // count
l.addLast(new UInt8Item((char)stringsIndexOffSize)); // offSize
for (int i=0; i= 0) {
//System.err.println("has subrs="+fonts[j].privateSubrs+" ,len="+fonts[j].privateLength);
l.addLast(getEntireIndexRange(fonts[j].privateSubrs));
}
}
// copy the charstring index
l.addLast(new MarkerItem(charstringsRef));
l.addLast(getEntireIndexRange(fonts[j].charstringsOffset));
// now create the new CFF font
int[] currentOffset = new int[1];
currentOffset[0] = 0;
Iterator listIter = l.iterator();
while ( listIter.hasNext() ) {
Item item = (Item) listIter.next();
item.increment(currentOffset);
}
listIter = l.iterator();
while ( listIter.hasNext() ) {
Item item = (Item) listIter.next();
item.xref();
}
int size = currentOffset[0];
byte[] b = new byte[size];
listIter = l.iterator();
while ( listIter.hasNext() ) {
Item item = (Item) listIter.next();
item.emit(b);
}
return b;
}
public boolean isCID(String fontName) {
int j;
for (j=0; j");
}
// string index
//strings = new String[stringOffsets.length-1];
/*
System.err.println("std strings = "+standardStrings.length);
System.err.println("fnt strings = "+(stringOffsets.length-1));
for (char j=0; j");
}
*/
// top dict
for (int j=0; j= 0) {
//System.err.println("PRIVATE::");
seek(fonts[j].privateOffset);
while (getPosition() < fonts[j].privateOffset+fonts[j].privateLength) {
getDictItem();
if (key=="Subrs")
//Add the private offset to the lsubrs since the offset is
// relative to the beginning of the PrivateDict
fonts[j].privateSubrs = ((Integer)args[0]).intValue()+fonts[j].privateOffset;
}
}
// fdarray index
if (fonts[j].fdarrayOffset >= 0) {
int[] fdarrayOffsets = getIndex(fonts[j].fdarrayOffset);
fonts[j].fdprivateOffsets = new int[fdarrayOffsets.length-1];
fonts[j].fdprivateLengths = new int[fdarrayOffsets.length-1];
//System.err.println("FD Font::");
for (int k=0; k