FileBasedFactory.java, [...]: New files, all merged from classpath.
2003-02-13 Michael Koch <konqueror@gmx.de> * gnu/java/util/prefs/FileBasedFactory.java, gnu/java/util/prefs/MemmoryBasedFactory.java, gnu/java/util/prefs/MemoryBasedPreferences.java, gnu/java/util/prefs/NodeReader.java, gnu/java/util/prefs/NodeWriter.java, java/util/prefs/AbstractPreferences.java, java/util/prefs/BackingStoreException.java, java/util/prefs/InvalidPreferencesFormatException.java, java/util/prefs/NodeChangeEvent.java, java/util/prefs/NodeChangeListener.java, java/util/prefs/PreferenceChangeEvent.java, java/util/prefs/PreferenceChangeListener.java, java/util/prefs/Preferences.java, java/util/prefs/PreferencesFactory.java: New files, all merged from classpath. * Makefile.am (ordinary_java_source_files): Added the following files: gnu/java/util/prefs/FileBasedFactory.java, gnu/java/util/prefs/MemmoryBasedFactory.java, gnu/java/util/prefs/MemoryBasedPreferences.java, gnu/java/util/prefs/NodeReader.java, gnu/java/util/prefs/NodeWriter.java, (core_java_source_files): Added the following files: java/util/prefs/AbstractPreferences.java, java/util/prefs/BackingStoreException.java, java/util/prefs/InvalidPreferencesFormatException.java, java/util/prefs/NodeChangeEvent.java, java/util/prefs/NodeChangeListener.java, java/util/prefs/PreferenceChangeEvent.java, java/util/prefs/PreferenceChangeListener.java, java/util/prefs/Preferences.java, java/util/prefs/PreferencesFactory.java * Makefile.in: Regenerated. From-SVN: r62827
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libjava/gnu/java/util/prefs/NodeReader.java
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libjava/gnu/java/util/prefs/NodeReader.java
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/* NodeReader - Reads and imports preferences nodes from files
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Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.util.prefs;
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.Reader;
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import java.util.prefs.*;
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/**
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* Reads and imports preferences nodes from files.
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*
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* @author Mark Wielaard (mark@klomp.org)
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*/
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public class NodeReader {
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private final BufferedReader br;
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private String line = "";
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private final PreferencesFactory factory;
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public NodeReader(Reader r, PreferencesFactory factory) {
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if(r instanceof BufferedReader) {
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br = (BufferedReader) r;
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} else {
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br = new BufferedReader(r);
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}
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this.factory = factory;
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}
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public NodeReader(InputStream is, PreferencesFactory factory) {
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this(new InputStreamReader(is), factory);
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}
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public void importPreferences()
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throws InvalidPreferencesFormatException, IOException
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{
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readPreferences();
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}
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private void readPreferences()
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throws InvalidPreferencesFormatException, IOException
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{
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// Begin starting tag
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skipTill("<preferences");
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readRoot();
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// Ending tag
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skipTill("</preferences>");
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}
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private void readRoot()
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throws InvalidPreferencesFormatException, IOException
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{
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// Begin starting tag
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skipTill("<root");
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// type attribute
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skipTill("type=\"");
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String type = readTill("\"");
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Preferences root;
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if ("user".equals(type)) {
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root = factory.userRoot();
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} else if ("system".equals(type)) {
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root = factory.systemRoot();
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} else {
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throw new InvalidPreferencesFormatException("Unknown type: "
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+ type);
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}
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// Read root map and subnodes
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readMap(root);
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readNodes(root);
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// Ending tag
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skipTill("</root>");
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}
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private void readNodes(Preferences node)
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throws InvalidPreferencesFormatException, IOException
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{
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while ("node".equals(nextTag())) {
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skipTill("<node");
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skipTill("name=\"");
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String name = readTill("\"");
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Preferences subnode = node.node(name);
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System.out.println("Found subnode: " + subnode.absolutePath());
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readMap(subnode);
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readNodes(subnode);
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skipTill("</node>");
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}
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}
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private void readMap(Preferences node)
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throws InvalidPreferencesFormatException, IOException
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{
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// Begin map tag
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skipTill("<map");
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// Empty map?
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if (line.startsWith("/>")) {
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line = line.substring(2);
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return;
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}
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// Map entries
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readEntries(node);
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// Ending tag
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skipTill("</map>");
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}
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private void readEntries(Preferences node)
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throws InvalidPreferencesFormatException, IOException
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{
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while ("entry".equals(nextTag())) {
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skipTill("<entry");
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skipTill("key=\"");
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String key = readTill("\"");
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skipTill("value=\"");
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String value = readTill("\"");
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System.out.println("Key: " + key + " Value: " + value);
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node.put(key, value);
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}
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}
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private void skipTill(String s)
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throws InvalidPreferencesFormatException, IOException
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{
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while(true) {
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if (line == null)
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throw new InvalidPreferencesFormatException(s + " not found");
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int index = line.indexOf(s);
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if (index == -1) {
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line = br.readLine();
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} else {
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line = line.substring(index+s.length());
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return;
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}
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}
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}
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private String readTill(String s)
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throws InvalidPreferencesFormatException
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{
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int index = line.indexOf(s);
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if (index == -1)
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throw new InvalidPreferencesFormatException(s + " not found");
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String read = line.substring(0, index);
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line = line.substring(index+s.length());
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return read;
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}
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private String nextTag()
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throws InvalidPreferencesFormatException, IOException
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{
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while(true) {
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if (line == null)
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throw new InvalidPreferencesFormatException("unexpected EOF");
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int start = line.indexOf("<");
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if (start == -1) {
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line = br.readLine();
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} else {
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// Find end of tag
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int end = start+1;
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while (end != line.length()
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&& " \t\r\n".indexOf(line.charAt(end)) == -1) {
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end++;
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}
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// Line now starts at the found tag
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String tag = line.substring(start+1,end);
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line = line.substring(start);
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return tag;
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}
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}
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}
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}
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