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added SubCommandHandler

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This commit is contained in:
Sebastian Sdorra
2011-05-21 12:11:03 +02:00
parent 41c8cdd588
commit e63975f90f
2 changed files with 188 additions and 95 deletions
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186
scm-clients/scm-cli-client/src/main/java/sonia/scm/cli/cmd/SubCommandHandler.java Normal file
View File

@@ -0,0 +1,186 @@
/**
* Copyright (c) 2010, Sebastian Sdorra
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of SCM-Manager; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm.cli.cmd;
//~--- non-JDK imports --------------------------------------------------------
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.util.IOUtil;
import sonia.scm.util.Util;
//~--- JDK imports ------------------------------------------------------------
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
/**
*
* @author Sebastian Sdorra
*/
public class SubCommandHandler
{
/** Field description */
public static final String RESOURCE_SERVICES =
"/META-INF/services/".concat(SubCommand.class.getName());
/** Field description */
private static volatile SubCommandHandler instance;
/** the logger for SubCommandOptionHandler */
private static final Logger logger =
LoggerFactory.getLogger(SubCommandOptionHandler.class);
//~--- constructors ---------------------------------------------------------
/**
* Constructs ...
*
*/
private SubCommandHandler()
{
subCommands = new HashMap<String, CommandDescriptor>();
loadSubCommands();
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @return
*/
public static SubCommandHandler getInstance()
{
if (instance == null)
{
synchronized (SubCommandHandler.class)
{
if (instance == null)
{
instance = new SubCommandHandler();
}
}
}
return instance;
}
/**
* Method description
*
*
* @param name
*
* @return
*/
public CommandDescriptor getDescriptor(String name)
{
return subCommands.get(name);
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*/
private void loadSubCommands()
{
BufferedReader reader = null;
try
{
reader = new BufferedReader(
new InputStreamReader(
SubCommandOptionHandler.class.getResourceAsStream(
RESOURCE_SERVICES)));
String line = reader.readLine();
while (line != null)
{
parseLine(line);
line = reader.readLine();
}
}
catch (IOException ex)
{
logger.error("could not load commands");
}
finally
{
IOUtil.close(reader);
}
}
/**
* Method description
*
*
* @param line
*/
private void parseLine(String line)
{
line = line.trim();
if (Util.isNotEmpty(line) &&!line.startsWith("#"))
{
try
{
Class<? extends SubCommand> clazz =
(Class<? extends SubCommand>) Class.forName(line);
CommandDescriptor desc = new CommandDescriptor(clazz);
subCommands.put(desc.getName(), desc);
}
catch (ClassNotFoundException ex)
{
logger.warn("could not found command class {}", line);
}
}
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private Map<String, CommandDescriptor> subCommands;
}

97
scm-clients/scm-cli-client/src/main/java/sonia/scm/cli/cmd/SubCommandOptionHandler.java
View File

@@ -42,21 +42,6 @@ import org.kohsuke.args4j.spi.OptionHandler;
import org.kohsuke.args4j.spi.Parameters;
import org.kohsuke.args4j.spi.Setter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.util.IOUtil;
import sonia.scm.util.Util;
//~--- JDK imports ------------------------------------------------------------
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
/**
*
* @author Sebastian Sdorra
@@ -64,16 +49,6 @@ import java.util.Map;
public class SubCommandOptionHandler extends OptionHandler<SubCommand>
{
/** Field description */
public static final String RESOURCE_SERVICES =
"/META-INF/services/".concat(SubCommand.class.getName());
/** the logger for SubCommandOptionHandler */
private static final Logger logger =
LoggerFactory.getLogger(SubCommandOptionHandler.class);
//~--- constructors ---------------------------------------------------------
/**
* Constructs ...
*
@@ -86,8 +61,6 @@ public class SubCommandOptionHandler extends OptionHandler<SubCommand>
Setter<? super SubCommand> setter)
{
super(parser, option, setter);
subCommands = new HashMap<String, CommandDescriptor>();
loadSubCommands();
}
//~--- methods --------------------------------------------------------------
@@ -107,7 +80,8 @@ public class SubCommandOptionHandler extends OptionHandler<SubCommand>
public int parseArguments(Parameters parameters) throws CmdLineException
{
String name = parameters.getParameter(0);
CommandDescriptor desc = subCommands.get(name);
CommandDescriptor desc =
SubCommandHandler.getInstance().getDescriptor(name);
if (desc != null)
{
@@ -136,71 +110,4 @@ public class SubCommandOptionHandler extends OptionHandler<SubCommand>
{
return "metaVar_command";
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*/
private void loadSubCommands()
{
BufferedReader reader = null;
try
{
reader = new BufferedReader(
new InputStreamReader(
SubCommandOptionHandler.class.getResourceAsStream(
RESOURCE_SERVICES)));
String line = reader.readLine();
while (line != null)
{
parseLine(line);
line = reader.readLine();
}
}
catch (IOException ex)
{
logger.error("could not load commands");
}
finally
{
IOUtil.close(reader);
}
}
/**
* Method description
*
*
* @param line
*/
private void parseLine(String line)
{
line = line.trim();
if (Util.isNotEmpty(line) &&!line.startsWith("#"))
{
try
{
Class<? extends SubCommand> clazz =
(Class<? extends SubCommand>) Class.forName(line);
CommandDescriptor desc = new CommandDescriptor(clazz);
subCommands.put(desc.getName(), desc);
}
catch (ClassNotFoundException ex)
{
logger.warn("could not found command class {}", line);
}
}
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private Map<String, CommandDescriptor> subCommands;
}