de.intarsys.pdf.encoding.GlyphNameMap Maven / Gradle / Ivy
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This is a fork of http://sourceforge.net/projects/jpodlib/ as development seems to be frozen.
We're providing some bug fixes along with deployments to maven.
/*
* Copyright (c) 2007, intarsys consulting GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the name of intarsys nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package de.intarsys.pdf.encoding;
import de.intarsys.tools.logging.LogTools;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* The mapping from Adobe glyph names to Unicode.
*
* For a specification see
* http://www.adobe.com/devnet/opentype/archives/glyph.html
*/
public class GlyphNameMap {
/**
* The number of 1:1 mappings from unicode to code points.
*
*
* This is done for the first 256 bytes to cache the most often used chars.
*
*/
private static final int ARRAY_MAPPING_SIZE = 256;
public static final GlyphNameMap Standard = new GlyphNameMap();
public static final String GLYPH_NOTDEF = ".notdef"; //$NON-NLS-1$
private static Logger Log = LogTools.getLogger(GlyphNameMap.class);
private static final String AdobeGlyphList = "AdobeGlyphList.txt";
private static final String PREFIX_UNI = "uni";
private Map glyphNameToUnicode = new HashMap();
private Map unicodeToGlyphName = new HashMap();
/**
* unicode to glyph name optimization: most chars will be in the ascii range
*/
private String[] asciiToGlyphName = new String[ARRAY_MAPPING_SIZE];
/**
* Create a GlyphNameMap.
*/
protected GlyphNameMap() {
super();
for (int i = 0; i < asciiToGlyphName.length; i++) {
asciiToGlyphName[i] = GLYPH_NOTDEF;
}
load();
}
/**
* Add an entry to the collection of known mappings.
*
* @param glyphName The adobe glyph name.
* @param unicode The unicode code point.
*/
protected void addEntry(String glyphName, int unicode) {
glyphNameToUnicode.put(glyphName, Integer.valueOf(unicode));
unicodeToGlyphName.put(Integer.valueOf(unicode), glyphName);
if ((unicode >= 0) && (unicode < ARRAY_MAPPING_SIZE)) {
asciiToGlyphName[unicode] = glyphName;
}
}
/**
* Get the adobe glyph name for a unicode code point or ".notdef" if not
* available.
*
* @param unicode The unicode code point to look up.
* @return The adobe glyph name or ".notdef".
*/
public String getGlyphName(int unicode) {
if ((unicode >= 0) && (unicode < ARRAY_MAPPING_SIZE)) {
return asciiToGlyphName[unicode];
} else {
String glyphName = (String) unicodeToGlyphName.get(Integer.valueOf(unicode));
if (glyphName == null) {
return GLYPH_NOTDEF;
} else {
return glyphName;
}
}
}
/**
* The internal representation of the map from glyph names to unicode.
*
* @return The internal representation of the map from glyph names to
* unicode.
*/
protected Map getGlyphNameToUnicode() {
return glyphNameToUnicode;
}
/**
* Get the unicode code point for an Adobe glyph name.
*
*
* If the glyph name is unknown, -1 is returned.
*
*
* @param glyphName An adobe glyph name.
* @return The unicode code point for an Adobe glyph name or -1.
*/
public int getUnicode(String glyphName) {
Integer result = (Integer) glyphNameToUnicode.get(glyphName);
if (result == null) {
// Allow direct access to unicode characters when prefixed by 'uni'.
if (glyphName != null && glyphName.startsWith(PREFIX_UNI)) {
try {
result = Integer.parseInt(glyphName.substring(3), 16);
addEntry(glyphName, result);
} catch (NumberFormatException e) {
// this starts only by hazard with "uni.."
}
}
}
if (result == null) {
return -1;
}
return result.intValue();
}
/**
* The internal representation of the map from unicode to glyph names .
*
* @return The internal representation of the map from unicode to glyph
* names .
*/
protected Map getUnicodeToGlyphName() {
return unicodeToGlyphName;
}
protected void load() {
InputStream is = getClass().getResourceAsStream(AdobeGlyphList);
try {
load(is);
} catch (IOException ignored) {
Log.log(Level.WARNING, "error loading Adobe glyph list");
}
}
protected void load(InputStream is) throws IOException {
StringBuilder sb = new StringBuilder();
String name = null;
String value = null;
int i = is.read();
while (i != -1) {
if (i == '\r' || i == '\n' || i == ' ') {
//
} else if (i == '#') {
i = is.read();
while (i != -1 && i != '\n') {
// skip rest of line
i = is.read();
}
} else {
while (i != -1) {
if (i == ';') {
name = sb.toString();
sb.setLength(0);
} else if (i == ' ' | i == '\r' || i == '\n') {
value = sb.toString();
sb.setLength(0);
while (i != -1 && i != '\n') {
// skip rest of line
i = is.read();
}
break;
} else {
sb.append((char) i);
}
i = is.read();
}
addEntry(name, Integer.parseInt(value, 16));
}
i = is.read();
}
}
}