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/*
* 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.ttf;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.fontbox.util.Charsets;
/**
* A table in a true type font.
*
* @author Ben Litchfield
*/
public class NamingTable extends TTFTable
{
/**
* A tag that identifies this table type.
*/
public static final String TAG = "name";
private List nameRecords;
private Map>>> lookupTable;
private String fontFamily = null;
private String fontSubFamily = null;
private String psName = null;
NamingTable(TrueTypeFont font)
{
super(font);
}
/**
* This will read the required data from the stream.
*
* @param ttf The font that is being read.
* @param data The stream to read the data from.
* @throws IOException If there is an error reading the data.
*/
@Override
void read(TrueTypeFont ttf, TTFDataStream data) throws IOException
{
int formatSelector = data.readUnsignedShort();
int numberOfNameRecords = data.readUnsignedShort();
int offsetToStartOfStringStorage = data.readUnsignedShort();
nameRecords = new ArrayList(numberOfNameRecords);
for (int i=0; i< numberOfNameRecords; i++)
{
NameRecord nr = new NameRecord();
nr.initData(ttf, data);
nameRecords.add(nr);
}
for (NameRecord nr : nameRecords)
{
// don't try to read invalid offsets, see PDFBOX-2608
if (nr.getStringOffset() > getLength())
{
nr.setString(null);
continue;
}
data.seek(getOffset() + (2*3)+numberOfNameRecords*2*6+nr.getStringOffset());
int platform = nr.getPlatformId();
int encoding = nr.getPlatformEncodingId();
Charset charset = Charsets.ISO_8859_1;
if (platform == NameRecord.PLATFORM_WINDOWS && (encoding == NameRecord.ENCODING_WINDOWS_SYMBOL || encoding == NameRecord.ENCODING_WINDOWS_UNICODE_BMP))
{
charset = Charsets.UTF_16;
}
else if (platform == NameRecord.PLATFORM_UNICODE)
{
charset = Charsets.UTF_16;
}
else if (platform == NameRecord.PLATFORM_ISO)
{
switch (encoding)
{
case 0:
charset = Charsets.US_ASCII;
break;
case 1:
//not sure is this is correct??
charset = Charsets.ISO_10646;
break;
case 2:
charset = Charsets.ISO_8859_1;
break;
default:
break;
}
}
String string = data.readString(nr.getStringLength(), charset);
nr.setString(string);
}
// build multi-dimensional lookup table
lookupTable = new HashMap>>>(nameRecords.size());
for (NameRecord nr : nameRecords)
{
// name id
Map>> platformLookup = lookupTable.get(nr.getNameId());
if (platformLookup == null)
{
platformLookup = new HashMap>>();
lookupTable.put(nr.getNameId(), platformLookup);
}
// platform id
Map> encodingLookup = platformLookup.get(nr.getPlatformId());
if (encodingLookup == null)
{
encodingLookup = new HashMap>();
platformLookup.put(nr.getPlatformId(), encodingLookup);
}
// encoding id
Map languageLookup = encodingLookup.get(nr.getPlatformEncodingId());
if (languageLookup == null)
{
languageLookup = new HashMap();
encodingLookup.put(nr.getPlatformEncodingId(), languageLookup);
}
// language id / string
languageLookup.put(nr.getLanguageId(), nr.getString());
}
// extract strings of interest
fontFamily = getEnglishName(NameRecord.NAME_FONT_FAMILY_NAME);
fontSubFamily = getEnglishName(NameRecord.NAME_FONT_SUB_FAMILY_NAME);
// extract PostScript name, only these two formats are valid
psName = getName(NameRecord.NAME_POSTSCRIPT_NAME,
NameRecord.PLATFORM_MACINTOSH,
NameRecord.ENCODING_MACINTOSH_ROMAN,
NameRecord.LANGUAGE_MACINTOSH_ENGLISH);
if (psName == null)
{
psName = getName(NameRecord.NAME_POSTSCRIPT_NAME,
NameRecord.PLATFORM_WINDOWS,
NameRecord.ENCODING_WINDOWS_UNICODE_BMP,
NameRecord.LANGUAGE_WINDOWS_EN_US);
}
if (psName != null)
{
psName = psName.trim();
}
initialized = true;
}
/**
* Helper to get English names by best effort.
*/
private String getEnglishName(int nameId)
{
// Unicode, Full, BMP, 1.1, 1.0
for (int i = 4; i >= 0; i--)
{
String nameUni =
getName(nameId,
NameRecord.PLATFORM_UNICODE,
i,
NameRecord.LANGUAGE_UNICODE);
if (nameUni != null)
{
return nameUni;
}
}
// Windows, Unicode BMP, EN-US
String nameWin =
getName(nameId,
NameRecord.PLATFORM_WINDOWS,
NameRecord.ENCODING_WINDOWS_UNICODE_BMP,
NameRecord.LANGUAGE_WINDOWS_EN_US);
if (nameWin != null)
{
return nameWin;
}
// Macintosh, Roman, English
String nameMac =
getName(nameId,
NameRecord.PLATFORM_MACINTOSH,
NameRecord.ENCODING_MACINTOSH_ROMAN,
NameRecord.LANGUAGE_MACINTOSH_ENGLISH);
if (nameMac != null)
{
return nameMac;
}
return null;
}
/**
* Returns a name from the table, or null it it does not exist.
*
* @param nameId Name ID from NameRecord constants.
* @param platformId Platform ID from NameRecord constants.
* @param encodingId Platform Encoding ID from NameRecord constants.
* @param languageId Language ID from NameRecord constants.
* @return name, or null
*/
public String getName(int nameId, int platformId, int encodingId, int languageId)
{
Map>> platforms = lookupTable.get(nameId);
if (platforms == null)
{
return null;
}
Map> encodings = platforms.get(platformId);
if (encodings == null)
{
return null;
}
Map languages = encodings.get(encodingId);
if (languages == null)
{
return null;
}
return languages.get(languageId);
}
/**
* This will get the name records for this naming table.
*
* @return A list of NameRecord objects.
*/
public List getNameRecords()
{
return nameRecords;
}
/**
* Returns the font family name, in English.
*
* @return the font family name, in English
*/
public String getFontFamily()
{
return fontFamily;
}
/**
* Returns the font sub family name, in English.
*
* @return the font sub family name, in English
*/
public String getFontSubFamily()
{
return fontSubFamily;
}
/**
* Returns the PostScript name.
*
* @return the PostScript name
*/
public String getPostScriptName()
{
return psName;
}
}
