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FileBasedFactory.java, [...]: New files, all merged from classpath.

Browse source 
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
This commit is contained in:
Michael Koch 2003-02-13 07:45:58 +00:00 • committed by Michael Koch
parent 31aef004ee
commit 63640075b0
17 changed files with 3410 additions and 1 deletions
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57
libjava/gnu/java/util/prefs/FileBasedFactory.java Normal file
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/* FileBasedFactory - Default Classpath implementation of a PreferencesFactory
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
package gnu.java.util.prefs;
import java.util.prefs.*;
/**
* Default Classpath implementation of a PreferencesFactory.
* Returns system and user root Preferences nodes that are read from files.
*
* @author Mark Wielaard (mark@klomp.org)
*/
public class FileBasedFactory implements PreferencesFactory {
public Preferences systemRoot() {
return null;
}
public Preferences userRoot() {
return null;
}
}

64
libjava/gnu/java/util/prefs/MemoryBasedFactory.java Normal file
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/* MemoryBasedFactory - Memory based PreferencesFactory usefull for testing
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
package gnu.java.util.prefs;
import java.util.prefs.*;
/**
* Memory based PreferencesFactory usefull for testing.
* Returns completely empty Preferences for system and user roots.
* All changes are only backed by the current instances in memory.
*
* @author Mark Wielaard (mark@klomp.org)
*/
public class MemoryBasedFactory implements PreferencesFactory {
// Static fields containing the preferences root nodes
private static final Preferences systemPreferences
= new MemoryBasedPreferences(null, "", false);
private static final Preferences userPreferences
= new MemoryBasedPreferences(null, "", true);
public Preferences systemRoot() {
return systemPreferences;
}
public Preferences userRoot() {
return userPreferences;
}
}

144
libjava/gnu/java/util/prefs/MemoryBasedPreferences.java Normal file
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/* MemoryBasedPreferences - A Preference node which holds all entries in memory
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
package gnu.java.util.prefs;
import java.util.HashMap;
import java.util.prefs.*;
/**
* A Preference node which holds all entries in memory
*
* @author Mark Wielaard (mark@klomp.org)
*/
public class MemoryBasedPreferences extends AbstractPreferences {
/** True if this is a preference node in the user tree, false otherwise. */
private final boolean isUser;
/** Contains all the preference entries of this node. */
private HashMap entries = new HashMap();
/**
* Creates a new preferences node with the given name and parent.
* When isUser is true it will be user node otherwise it will be a system
* node. It will always set the <code>newNode</code> field to true
* since there is no real backing store, so all nodes are new.
*/
public MemoryBasedPreferences(MemoryBasedPreferences parent,
String name,
boolean isUser) {
super(parent, name);
this.isUser = isUser;
// Since we do not have a real backing store all nodes are new
newNode = true;
}
/**
* Returns true if this node was created as a user node.
*/
public boolean isUserNode() {
return isUser;
}
/**
* Returns an empty array since all children names are always already
* chached.
*/
protected String[] childrenNamesSpi() throws BackingStoreException {
return new String[0];
}
/**
* Returns a new node with the given name with as parent this node and
* with the <code>isUser</code> flag set to the same value as this node.
*/
protected AbstractPreferences childSpi(String childName) {
return new MemoryBasedPreferences(this, childName, isUser);
}
/**
* Returns a (possibly empty) array of keys of the preferences entries of
* this node.
*/
protected String[] keysSpi() throws BackingStoreException {
return (String[]) entries.keySet().toArray(new String[entries.size()]);
}
/**
* Returns the associated value from this nodes preferences entries or
* null when the key has not been set.
*/
protected String getSpi(String key) {
return (String) entries.get(key);
}
/**
* Sets the value for the given key.
*/
protected void putSpi(String key, String value) {
entries.put(key, value);
}
/**
* Removes the entry with the given key.
*/
protected void removeSpi(String key) {
entries.remove(key);
}
/**
* Does nothing since we do not have any backing store.
*/
protected void flushSpi() {
}
/**
* Does nothing since we do not have any backing store.
*/
protected void syncSpi() {
}
/**
* Just removes the entries map of this node.
*/
protected void removeNodeSpi() {
entries = null;
}
}

223
libjava/gnu/java/util/prefs/NodeReader.java Normal file
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/* NodeReader - Reads and imports preferences nodes from files
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
package gnu.java.util.prefs;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.InputStream;
import java.io.IOException;
import java.io.Reader;
import java.util.prefs.*;
/**
* Reads and imports preferences nodes from files.
*
* @author Mark Wielaard (mark@klomp.org)
*/
public class NodeReader {
private final BufferedReader br;
private String line = "";
private final PreferencesFactory factory;
public NodeReader(Reader r, PreferencesFactory factory) {
if(r instanceof BufferedReader) {
br = (BufferedReader) r;
} else {
br = new BufferedReader(r);
}
this.factory = factory;
}
public NodeReader(InputStream is, PreferencesFactory factory) {
this(new InputStreamReader(is), factory);
}
public void importPreferences()
throws InvalidPreferencesFormatException, IOException
{
readPreferences();
}
private void readPreferences()
throws InvalidPreferencesFormatException, IOException
{
// Begin starting tag
skipTill("<preferences");
readRoot();
// Ending tag
skipTill("</preferences>");
}
private void readRoot()
throws InvalidPreferencesFormatException, IOException
{
// Begin starting tag
skipTill("<root");
// type attribute
skipTill("type=\"");
String type = readTill("\"");
Preferences root;
if ("user".equals(type)) {
root = factory.userRoot();
} else if ("system".equals(type)) {
root = factory.systemRoot();
} else {
throw new InvalidPreferencesFormatException("Unknown type: "
+ type);
}
// Read root map and subnodes
readMap(root);
readNodes(root);
// Ending tag
skipTill("</root>");
}
private void readNodes(Preferences node)
throws InvalidPreferencesFormatException, IOException
{
while ("node".equals(nextTag())) {
skipTill("<node");
skipTill("name=\"");
String name = readTill("\"");
Preferences subnode = node.node(name);
System.out.println("Found subnode: " + subnode.absolutePath());
readMap(subnode);
readNodes(subnode);
skipTill("</node>");
}
}
private void readMap(Preferences node)
throws InvalidPreferencesFormatException, IOException
{
// Begin map tag
skipTill("<map");
// Empty map?
if (line.startsWith("/>")) {
line = line.substring(2);
return;
}
// Map entries
readEntries(node);
// Ending tag
skipTill("</map>");
}
private void readEntries(Preferences node)
throws InvalidPreferencesFormatException, IOException
{
while ("entry".equals(nextTag())) {
skipTill("<entry");
skipTill("key=\"");
String key = readTill("\"");
skipTill("value=\"");
String value = readTill("\"");
System.out.println("Key: " + key + " Value: " + value);
node.put(key, value);
}
}
private void skipTill(String s)
throws InvalidPreferencesFormatException, IOException
{
while(true) {
if (line == null)
throw new InvalidPreferencesFormatException(s + " not found");
int index = line.indexOf(s);
if (index == -1) {
line = br.readLine();
} else {
line = line.substring(index+s.length());
return;
}
}
}
private String readTill(String s)
throws InvalidPreferencesFormatException
{
int index = line.indexOf(s);
if (index == -1)
throw new InvalidPreferencesFormatException(s + " not found");
String read = line.substring(0, index);
line = line.substring(index+s.length());
return read;
}
private String nextTag()
throws InvalidPreferencesFormatException, IOException
{
while(true) {
if (line == null)
throw new InvalidPreferencesFormatException("unexpected EOF");
int start = line.indexOf("<");
if (start == -1) {
line = br.readLine();
} else {
// Find end of tag
int end = start+1;
while (end != line.length()
&& " \t\r\n".indexOf(line.charAt(end)) == -1) {
end++;
}
// Line now starts at the found tag
String tag = line.substring(start+1,end);
line = line.substring(start);
return tag;
}
}
}
}

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libjava/gnu/java/util/prefs/NodeWriter.java Normal file
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/* NodeWriter - Writes and exports preferences nodes to files
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
package gnu.java.util.prefs;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.StringTokenizer;
import java.util.prefs.*;
/**
* Writes and exports preferences nodes to files
*
* @author Mark Wielaard (mark@klomp.org)
*/
public class NodeWriter {
/** The Preferences node to write. */
private final Preferences prefs;
/** The bufferedWriter to write the node to. */
private final BufferedWriter bw;
/**
* True if the complete sub tree should be written,
* false if only the node should be written.
*/
private boolean subtree;
/**
* Creates a new NodeWriter for the given preferences node and writer.
*/
public NodeWriter(Preferences prefs, Writer w) {
this.prefs = prefs;
if (w instanceof BufferedWriter) {
this.bw = (BufferedWriter) w;
} else {
this.bw = new BufferedWriter(w);
}
}
/**
* Creates a new NodeWriter for the given preferences node and
* outputstream. Creates a new OutputStreamWriter.
*/
public NodeWriter(Preferences prefs, OutputStream os) {
this(prefs, new OutputStreamWriter(os));
}
/**
* Writes the preference node plus the complete subtree.
*/
public void writePrefsTree() throws BackingStoreException, IOException {
subtree = true;
writeHeader();
writePreferences();
bw.flush();
}
/**
* Writes only the preference node.
*/
public void writePrefs() throws BackingStoreException, IOException {
subtree = false;
writeHeader();
writePreferences();
bw.flush();
}
/**
* Writes the standard header.
*/
private void writeHeader() throws BackingStoreException, IOException {
bw.write("<?xml version=\"1.0\"?>");
bw.newLine();
bw.newLine();
bw.write("<!-- GNU Classpath java.util.prefs Preferences ");
if (prefs.isUserNode()) {
bw.write("user");
} else {
bw.write("system");
}
// root node?
if (prefs.parent() == null) {
bw.write(" root");
}
if (subtree) {
bw.write(" tree");
} else {
bw.write(" node");
}
// no root?
if (prefs.parent() != null) {
bw.newLine();
bw.write(" '");
bw.write(prefs.absolutePath());
bw.write('\'');
bw.newLine();
}
bw.write(" -->");
bw.newLine();
bw.newLine();
}
/**
* Write the preferences tag and the root.
*/
private void writePreferences() throws BackingStoreException, IOException {
bw.write("<preferences>");
bw.newLine();
writeRoot();
bw.write("</preferences>");
bw.newLine();
}
private void writeRoot() throws BackingStoreException, IOException {
bw.write(" <root type=\"");
if (prefs.isUserNode()) {
bw.write("user");
} else {
bw.write("system");
}
bw.write("\"/>");
writeRootMap();
writeNode();
bw.write(" </root>");
bw.newLine();
}
private void writeRootMap() throws BackingStoreException, IOException {
// Is it a root node?
if(prefs.parent() == null && prefs.keys().length > 0) {
bw.newLine();
writeMap(prefs, 2);
} else {
bw.write("<map/>");
bw.newLine();
}
}
/**
* Writes all the parents of the preferences node without any entries.
* Returns the number of parents written, which has to be used as
* argument to <code>writeCloseParents()</code> after writing the node
* itself.
*/
private int writeParents() throws IOException {
int parents;
String path = prefs.absolutePath();
int lastslash = path.lastIndexOf("/");
if (lastslash > 0) {
path = path.substring(1, lastslash);
StringTokenizer st = new StringTokenizer(path);
parents = st.countTokens();
System.out.println("path: " + path);
System.out.println("parents: " + parents);
for (int i=0; i<parents; i++) {
String name = st.nextToken();
indent(i+2);
bw.write("<node name=\"" + name + "\">");
bw.write("<map/>");
bw.write("</node>");
bw.newLine();
}
} else {
parents = 0;
}
return parents;
}
private void writeCloseParents(int parents) throws IOException {
while(parents > 0) {
indent(parents+1);
bw.write("</node>");
bw.newLine();
parents--;
}
}
private void writeNode() throws BackingStoreException, IOException {
int parents = writeParents();
// root?
int indent;
if (prefs.parent() == null) {
indent = parents+1;
} else {
indent = parents+2;
}
writeNode(prefs, indent);
writeCloseParents(parents);
}
private void writeNode(Preferences node, int indent)
throws BackingStoreException, IOException
{
// not root?
if (node.parent() != null) {
indent(indent);
bw.write("<node name=\"" + node.name() + "\">");
if (node.keys().length > 0) {
bw.newLine();
}
writeMap(node, indent+1);
}
if (subtree) {
String[] children = node.childrenNames();
for (int i=0; i<children.length; i++) {
Preferences child = node.node(children[i]);
writeNode(child, indent+1);
}
}
// not root?
if (node.parent() != null) {
indent(indent);
bw.write("</node>");
bw.newLine();
}
}
private void writeMap(Preferences node, int indent)
throws BackingStoreException, IOException
{
// construct String used for indentation
StringBuffer indentBuffer = new StringBuffer(2*indent);
for (int i=0; i < indent; i++)
indentBuffer.append(" ");
String indentString = indentBuffer.toString();
if (node.keys().length > 0) {
bw.write(indentString);
bw.write("<map>");
bw.newLine();
writeEntries(node, indentString + " ");
bw.write(indentString);
bw.write("</map>");
} else {
bw.write("<map/>");
}
bw.newLine();
}
private void writeEntries(Preferences node, String indent)
throws BackingStoreException, IOException
{
String[] keys = node.keys();
for(int i = 0; i < keys.length; i++) {
String value = node.get(keys[i], null);
if (value == null) {
throw new BackingStoreException("null value for key '"
+ keys[i] + "'");
}
bw.write(indent);
bw.write("<entry key=\"" + keys[i] + "\""
+ " value=\"" + value + "\"/>");
bw.newLine();
}
}
private void indent(int x) throws IOException {
for (int i=0; i<x; i++) {
bw.write(" ");
}
}
}