luni/src/main/java/java/util/logging/Level.java - platform/libcore-snapshot - Git at Google

 /*
  * 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 java.util.logging;

 import dalvik.system.VMStack;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 import java.util.MissingResourceException;
 import java.util.ResourceBundle;
 import libcore.base.Objects;

 /**
  * {@code Level} objects are used to indicate the level of logging. There are a
  * set of predefined logging levels, each associated with an integer value.
  * Enabling a certain logging level also enables all logging levels with larger
  * values.
  * <p>
  * The predefined levels in ascending order are FINEST, FINER, FINE, CONFIG,
  * INFO, WARNING, SEVERE. There are two additional predefined levels, which are
  * ALL and OFF. ALL indicates logging all messages, and OFF indicates logging no
  * messages.
  */
 public class Level implements Serializable {

     private static final long serialVersionUID = -8176160795706313070L;

     private static final List<Level> levels = new ArrayList<Level>(9);

     /**
      * The OFF level provides no logging messages.
      */
     public static final Level OFF = new Level("OFF", Integer.MAX_VALUE);

     /**
      * The SEVERE level provides severe failure messages.
      */
     public static final Level SEVERE = new Level("SEVERE", 1000);

     /**
      * The WARNING level provides warnings.
      */
     public static final Level WARNING = new Level("WARNING", 900);

     /**
      * The INFO level provides informative messages.
      */
     public static final Level INFO = new Level("INFO", 800);

     /**
      * The CONFIG level provides static configuration messages.
      */
     public static final Level CONFIG = new Level("CONFIG", 700);

     /**
      * The FINE level provides tracing messages.
      */
     public static final Level FINE = new Level("FINE", 500);

     /**
      * The FINER level provides more detailed tracing messages.
      */
     public static final Level FINER = new Level("FINER", 400);

     /**
      * The FINEST level provides highly detailed tracing messages.
      */
     public static final Level FINEST = new Level("FINEST", 300);

     /**
      * The ALL level provides all logging messages.
      */
     public static final Level ALL = new Level("ALL", Integer.MIN_VALUE);

     /**
      * Parses a level name into a {@code Level} object.
      *
      * @param name
      *            the name of the desired {@code level}, which cannot be
      *            {@code null}.
      * @return the level with the specified name.
      * @throws NullPointerException
      *             if {@code name} is {@code null}.
      * @throws IllegalArgumentException
      *             if {@code name} is not valid.
      */
     public static Level parse(String name) throws IllegalArgumentException {
         if (name == null) {
             throw new NullPointerException("name == null");
         }

         boolean isNameAnInt;
         int nameAsInt;
         try {
             nameAsInt = Integer.parseInt(name);
             isNameAnInt = true;
         } catch (NumberFormatException e) {
             nameAsInt = 0;
             isNameAnInt = false;
         }

         synchronized (levels) {
             for (Level level : levels) {
                 if (name.equals(level.getName())) {
                     return level;
                 }
             }

             if (isNameAnInt) {
                 /*
                  * Loop through levels a second time, so that the returned
                  * instance will be passed on the order of construction.
                  */
                 for (Level level : levels) {
                     if (nameAsInt == level.intValue()) {
                         return level;
                     }
                 }
             }
         }

         if (!isNameAnInt) {
             throw new IllegalArgumentException("Cannot parse name '" + name + "'");
         }

         return new Level(name, nameAsInt);
     }

     /**
      * The name of this Level.
      *
      * @serial
      */
     private final String name;

     /**
      * The integer value indicating the level.
      *
      * @serial
      */
     private final int value;

     /**
      * The name of the resource bundle used to localize the level name.
      *
      * @serial
      */
     private final String resourceBundleName;

     /**
      * The resource bundle associated with this level, used to localize the
      * level name.
      */
     private transient ResourceBundle rb;

     /**
      * Constructs an instance of {@code Level} taking the supplied name and
      * level value.
      *
      * @param name
      *            the name of the level.
      * @param level
      *            an integer value indicating the level.
      * @throws NullPointerException
      *             if {@code name} is {@code null}.
      */
     protected Level(String name, int level) {
         this(name, level, null);
     }

     /**
      * Constructs an instance of {@code Level} taking the supplied name, level
      * value and resource bundle name.
      *
      * @param name
      *            the name of the level.
      * @param level
      *            an integer value indicating the level.
      * @param resourceBundleName
      *            the name of the resource bundle to use.
      * @throws NullPointerException
      *             if {@code name} is {@code null}.
      */
     protected Level(String name, int level, String resourceBundleName) {
         if (name == null) {
             throw new NullPointerException("name == null");
         }
         this.name = name;
         this.value = level;
         this.resourceBundleName = resourceBundleName;
         if (resourceBundleName != null) {
             try {
                 rb = ResourceBundle.getBundle(resourceBundleName,
                         // BEGIN android-changed
                         Locale.getDefault(), VMStack.getCallingClassLoader());
                         // BEGIN android-changed
             } catch (MissingResourceException e) {
                 rb = null;
             }
         }
         synchronized (levels) {
             levels.add(this);
         }
     }

     /**
      * Gets the name of this level.
      *
      * @return this level's name.
      */
     public String getName() {
         return this.name;
     }

     /**
      * Gets the name of the resource bundle associated with this level.
      *
      * @return the name of this level's resource bundle.
      */
     public String getResourceBundleName() {
         return this.resourceBundleName;
     }

     /**
      * Gets the integer value indicating this level.
      *
      * @return this level's integer value.
      */
     public final int intValue() {
         return this.value;
     }

     /**
      * Serialization helper method to maintain singletons and add any new
      * levels.
      *
      * @return the resolved instance.
      */
     private Object readResolve() {
         synchronized (levels) {
             for (Level level : levels) {
                 if (value != level.value) {
                     continue;
                 }
                 if (!name.equals(level.name)) {
                     continue;
                 }
                 if (Objects.equal(resourceBundleName, level.resourceBundleName)) {
                     return level;
                 }
             }
             // This is a new value, so add it.
             levels.add(this);
             return this;
         }
     }

     /**
      * Serialization helper to setup transient resource bundle instance.
      *
      * @param in
      *            the input stream to read the instance data from.
      * @throws IOException
      *             if an IO error occurs.
      * @throws ClassNotFoundException
      *             if a class is not found.
      */
     private void readObject(ObjectInputStream in) throws IOException,
             ClassNotFoundException {
         in.defaultReadObject();
         if (resourceBundleName != null) {
             try {
                 rb = ResourceBundle.getBundle(resourceBundleName);
             } catch (MissingResourceException e) {
                 rb = null;
             }
         }
     }

     /**
      * Gets the localized name of this level. The default locale is used. If no
      * resource bundle is associated with this level then the original level
      * name is returned.
      *
      * @return the localized name of this level.
      */
     public String getLocalizedName() {
         if (rb == null) {
             return name;
         }

         try {
             return rb.getString(name);
         } catch (MissingResourceException e) {
             return name;
         }
     }

     /**
      * Compares two {@code Level} objects for equality. They are considered to
      * be equal if they have the same level value.
      *
      * @param o
      *            the other object to compare this level to.
      * @return {@code true} if this object equals to the supplied object,
      *         {@code false} otherwise.
      */
     @Override
     public boolean equals(Object o) {
         if (this == o) {
             return true;
         }

         if (!(o instanceof Level)) {
             return false;
         }

         return ((Level) o).intValue() == this.value;
     }

     /**
      * Returns the hash code of this {@code Level} object.
      *
      * @return this level's hash code.
      */
     @Override
     public int hashCode() {
         return this.value;
     }

     /**
      * Returns the string representation of this {@code Level} object. In
      * this case, it is the level's name.
      *
      * @return the string representation of this level.
      */
     @Override
     public final String toString() {
         return this.name;
     }
 }
	/*
	* 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 java.util.logging;

	import dalvik.system.VMStack;
	import java.io.IOException;
	import java.io.ObjectInputStream;
	import java.io.Serializable;
	import java.util.ArrayList;
	import java.util.List;
	import java.util.Locale;
	import java.util.MissingResourceException;
	import java.util.ResourceBundle;
	import libcore.base.Objects;

	/**
	* {@code Level} objects are used to indicate the level of logging. There are a
	* set of predefined logging levels, each associated with an integer value.
	* Enabling a certain logging level also enables all logging levels with larger
	* values.
	* <p>
	* The predefined levels in ascending order are FINEST, FINER, FINE, CONFIG,
	* INFO, WARNING, SEVERE. There are two additional predefined levels, which are
	* ALL and OFF. ALL indicates logging all messages, and OFF indicates logging no
	* messages.
	*/
	public class Level implements Serializable {

	private static final long serialVersionUID = -8176160795706313070L;

	private static final List<Level> levels = new ArrayList<Level>(9);

	/**
	* The OFF level provides no logging messages.
	*/
	public static final Level OFF = new Level("OFF", Integer.MAX_VALUE);

	/**
	* The SEVERE level provides severe failure messages.
	*/
	public static final Level SEVERE = new Level("SEVERE", 1000);

	/**
	* The WARNING level provides warnings.
	*/
	public static final Level WARNING = new Level("WARNING", 900);

	/**
	* The INFO level provides informative messages.
	*/
	public static final Level INFO = new Level("INFO", 800);

	/**
	* The CONFIG level provides static configuration messages.
	*/
	public static final Level CONFIG = new Level("CONFIG", 700);

	/**
	* The FINE level provides tracing messages.
	*/
	public static final Level FINE = new Level("FINE", 500);

	/**
	* The FINER level provides more detailed tracing messages.
	*/
	public static final Level FINER = new Level("FINER", 400);

	/**
	* The FINEST level provides highly detailed tracing messages.
	*/
	public static final Level FINEST = new Level("FINEST", 300);

	/**
	* The ALL level provides all logging messages.
	*/
	public static final Level ALL = new Level("ALL", Integer.MIN_VALUE);

	/**
	* Parses a level name into a {@code Level} object.
	*
	* @param name
	* the name of the desired {@code level}, which cannot be
	* {@code null}.
	* @return the level with the specified name.
	* @throws NullPointerException
	* if {@code name} is {@code null}.
	* @throws IllegalArgumentException
	* if {@code name} is not valid.
	*/
	public static Level parse(String name) throws IllegalArgumentException {
	if (name == null) {
	throw new NullPointerException("name == null");
	}

	boolean isNameAnInt;
	int nameAsInt;
	try {
	nameAsInt = Integer.parseInt(name);
	isNameAnInt = true;
	} catch (NumberFormatException e) {
	nameAsInt = 0;
	isNameAnInt = false;
	}

	synchronized (levels) {
	for (Level level : levels) {
	if (name.equals(level.getName())) {
	return level;
	}
	}

	if (isNameAnInt) {
	/*
	* Loop through levels a second time, so that the returned
	* instance will be passed on the order of construction.
	*/
	for (Level level : levels) {
	if (nameAsInt == level.intValue()) {
	return level;
	}
	}
	}
	}

	if (!isNameAnInt) {
	throw new IllegalArgumentException("Cannot parse name '" + name + "'");
	}

	return new Level(name, nameAsInt);
	}

	/**
	* The name of this Level.
	*
	* @serial
	*/
	private final String name;

	/**
	* The integer value indicating the level.
	*
	* @serial
	*/
	private final int value;

	/**
	* The name of the resource bundle used to localize the level name.
	*
	* @serial
	*/
	private final String resourceBundleName;

	/**
	* The resource bundle associated with this level, used to localize the
	* level name.
	*/
	private transient ResourceBundle rb;

	/**
	* Constructs an instance of {@code Level} taking the supplied name and
	* level value.
	*
	* @param name
	* the name of the level.
	* @param level
	* an integer value indicating the level.
	* @throws NullPointerException
	* if {@code name} is {@code null}.
	*/
	protected Level(String name, int level) {
	this(name, level, null);
	}

	/**
	* Constructs an instance of {@code Level} taking the supplied name, level
	* value and resource bundle name.
	*
	* @param name
	* the name of the level.
	* @param level
	* an integer value indicating the level.
	* @param resourceBundleName
	* the name of the resource bundle to use.
	* @throws NullPointerException
	* if {@code name} is {@code null}.
	*/
	protected Level(String name, int level, String resourceBundleName) {
	if (name == null) {
	throw new NullPointerException("name == null");
	}
	this.name = name;
	this.value = level;
	this.resourceBundleName = resourceBundleName;
	if (resourceBundleName != null) {
	try {
	rb = ResourceBundle.getBundle(resourceBundleName,
	// BEGIN android-changed
	Locale.getDefault(), VMStack.getCallingClassLoader());
	// BEGIN android-changed
	} catch (MissingResourceException e) {
	rb = null;
	}
	}
	synchronized (levels) {
	levels.add(this);
	}
	}

	/**
	* Gets the name of this level.
	*
	* @return this level's name.
	*/
	public String getName() {
	return this.name;
	}

	/**
	* Gets the name of the resource bundle associated with this level.
	*
	* @return the name of this level's resource bundle.
	*/
	public String getResourceBundleName() {
	return this.resourceBundleName;
	}

	/**
	* Gets the integer value indicating this level.
	*
	* @return this level's integer value.
	*/
	public final int intValue() {
	return this.value;
	}

	/**
	* Serialization helper method to maintain singletons and add any new
	* levels.
	*
	* @return the resolved instance.
	*/
	private Object readResolve() {
	synchronized (levels) {
	for (Level level : levels) {
	if (value != level.value) {
	continue;
	}
	if (!name.equals(level.name)) {
	continue;
	}
	if (Objects.equal(resourceBundleName, level.resourceBundleName)) {
	return level;
	}
	}
	// This is a new value, so add it.
	levels.add(this);
	return this;
	}
	}

	/**
	* Serialization helper to setup transient resource bundle instance.
	*
	* @param in
	* the input stream to read the instance data from.
	* @throws IOException
	* if an IO error occurs.
	* @throws ClassNotFoundException
	* if a class is not found.
	*/
	private void readObject(ObjectInputStream in) throws IOException,
	ClassNotFoundException {
	in.defaultReadObject();
	if (resourceBundleName != null) {
	try {
	rb = ResourceBundle.getBundle(resourceBundleName);
	} catch (MissingResourceException e) {
	rb = null;
	}
	}
	}

	/**
	* Gets the localized name of this level. The default locale is used. If no
	* resource bundle is associated with this level then the original level
	* name is returned.
	*
	* @return the localized name of this level.
	*/
	public String getLocalizedName() {
	if (rb == null) {
	return name;
	}

	try {
	return rb.getString(name);
	} catch (MissingResourceException e) {
	return name;
	}
	}

	/**
	* Compares two {@code Level} objects for equality. They are considered to
	* be equal if they have the same level value.
	*
	* @param o
	* the other object to compare this level to.
	* @return {@code true} if this object equals to the supplied object,
	* {@code false} otherwise.
	*/
	@Override
	public boolean equals(Object o) {
	if (this == o) {
	return true;
	}

	if (!(o instanceof Level)) {
	return false;
	}

	return ((Level) o).intValue() == this.value;
	}

	/**
	* Returns the hash code of this {@code Level} object.
	*
	* @return this level's hash code.
	*/
	@Override
	public int hashCode() {
	return this.value;
	}

	/**
	* Returns the string representation of this {@code Level} object. In
	* this case, it is the level's name.
	*
	* @return the string representation of this level.
	*/
	@Override
	public final String toString() {
	return this.name;
	}
	}