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/*
* Copyright (c) 2012, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.javafx.font;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import com.sun.glass.utils.NativeLibLoader;
/**
* Class AndroidFontFinder reads font descriptor from
* /system/etc/system_fonts.xml. If that file doesn't exist it is replaced by
* embedded font descriptor {@link com/sun/javafx/font/android_system_fonts.xml} which
* defines some basic mappings based on best guess which fonts are mandatory on
* platforms lower than 4.0 and how they map to typefaces.
*/
class AndroidFontFinder {
private final static String SYSTEM_FONT_NAME = "sans serif";
private final static float SYSTEM_FONT_SIZE = 16.0f;
final static String fontDescriptor_2_X_Path = "/com/sun/javafx/font/android_system_fonts.xml";
final static String fontDescriptor_4_X_Path = "/system/etc/system_fonts.xml";
final static String systemFontsDir = "/system/fonts";
static {
@SuppressWarnings("removal")
var dummy = AccessController.doPrivileged((PrivilegedAction) () -> {
NativeLibLoader.loadLibrary("javafx_font");
return null;
});
}
public static String getSystemFont() {
return SYSTEM_FONT_NAME;
}
public static float getSystemFontSize() {
return SYSTEM_FONT_SIZE;
}
public static String getSystemFontsDir() {
return systemFontsDir;
}
private static boolean parse_2_X_SystemDefaultFonts(
final HashMap fontToFileMap,
final HashMap fontToFamilyNameMap,
final HashMap> familyToFontListMap) {
InputStream is = AndroidFontFinder.class
.getResourceAsStream(fontDescriptor_2_X_Path);
if (is == null) {
System.err
.println("Resource not found: " + fontDescriptor_2_X_Path);
return false;
}
return parseSystemDefaultFonts(is, fontToFileMap, fontToFamilyNameMap,
familyToFontListMap);
}
private static boolean parse_4_X_SystemDefaultFonts(
final HashMap fontToFileMap,
final HashMap fontToFamilyNameMap,
final HashMap> familyToFontListMap) {
File iFile = new File(fontDescriptor_4_X_Path);
try {
return parseSystemDefaultFonts(new FileInputStream(iFile),
fontToFileMap, fontToFamilyNameMap, familyToFontListMap);
} catch (FileNotFoundException e) {
System.err.println("File not found: " + fontDescriptor_4_X_Path);
}
return false;
}
private static boolean parseSystemDefaultFonts(final InputStream is,
final HashMap fontToFileMap,
final HashMap fontToFamilyNameMap,
final HashMap> familyToFontListMap) {
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = factory.newSAXParser();
DefaultHandler handler = new DefaultHandler() {
private final static char DASH = '-';
private final static String FAMILY = "family";
private final static String FILE = "file";
private final static String FILESET = "fileset";
private final static String NAME = "name";
private final static String NAMESET = "nameset";
private final static char SPACE = ' ';
final List filesets = new ArrayList<>();
boolean inFamily = false;
boolean inFile = false;
boolean inFileset = false;
boolean inName = false;
boolean inNameset = false;
private final List namesets = new ArrayList<>();
private final String[] styles = new String[] {
"regular", "bold", "italic", "bold italic" };
public void characters(char[] ch, int start, int length)
throws SAXException {
if (inName) {
String nameset = new String(ch, start, length)
.toLowerCase();
namesets.add(nameset);
} else if (inFile) {
String fileset = new String(ch, start, length);
filesets.add(fileset);
}
}
public void endElement(String uri, String localName,
String qName) throws SAXException {
if (qName.equalsIgnoreCase(FAMILY)) {
for (String family : namesets) {
int i = 0;
String familyName = family.replace(DASH, SPACE);
for (String file : filesets) {
String fullName = familyName + " " + styles[i];
String fullFile = systemFontsDir
+ File.separator + file;
File f = new File(fullFile);
if (!f.exists() || !f.canRead()) {
continue;
}
fontToFileMap.put(fullName, fullFile);
fontToFamilyNameMap.put(fullName, familyName);
ArrayList list = familyToFontListMap
.get(familyName);
if (list == null) {
list = new ArrayList();
familyToFontListMap.put(familyName, list);
}
list.add(fullName);
i++;
}
}
inFamily = false;
} else if (qName.equalsIgnoreCase(NAMESET)) {
inNameset = false;
} else if (qName.equalsIgnoreCase(FILESET)) {
inFileset = false;
} else if (qName.equalsIgnoreCase(NAME)) {
inName = false;
} else if (qName.equalsIgnoreCase(FILE)) {
inFile = false;
}
}
@Override
public void startElement(String uri, String localName,
String qName, Attributes attributes)
throws SAXException {
if (qName.equalsIgnoreCase(FAMILY)) {
inFamily = true;
namesets.clear();
filesets.clear();
} else if (qName.equalsIgnoreCase(NAMESET)) {
inNameset = true;
} else if (qName.equalsIgnoreCase(FILESET)) {
inFileset = true;
} else if (qName.equalsIgnoreCase(NAME)) {
inName = true;
} else if (qName.equalsIgnoreCase(FILE)) {
inFile = true;
}
}
};// DefaultHandler
saxParser.parse(is, handler);
return true;
} catch (IOException e) {
System.err.println("Failed to load default fonts descriptor: "
+ fontDescriptor_4_X_Path);
} catch (Exception e) {
System.err.println("Failed parsing default fonts descriptor;");
e.printStackTrace();
}
return false;
}
public static void populateFontFileNameMap(
HashMap fontToFileMap,
HashMap fontToFamilyNameMap,
HashMap> familyToFontListMap,
Locale locale) {
if (fontToFileMap == null || fontToFamilyNameMap == null
|| familyToFontListMap == null) {
return;
}
if (locale == null) {
locale = Locale.ENGLISH;
}
boolean systemFonts_4_X_DescriptorFound = parse_4_X_SystemDefaultFonts(
fontToFileMap, fontToFamilyNameMap, familyToFontListMap);
if (!systemFonts_4_X_DescriptorFound) {
parse_2_X_SystemDefaultFonts(fontToFileMap, fontToFamilyNameMap,
familyToFontListMap);
}
}
}
