org.codehaus.plexus.util.cli.Commandline Maven / Gradle / Ivy
package org.codehaus.plexus.util.cli;
/*
* Copyright The Codehaus Foundation.
*
* Licensed 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
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/*
* ====================================================================
* Copyright 2003-2004 The Apache Software Foundation.
*
* Licensed 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.
* ====================================================================
*/
import org.codehaus.plexus.util.Os;
import org.codehaus.plexus.util.StringUtils;
import org.codehaus.plexus.util.cli.shell.BourneShell;
import org.codehaus.plexus.util.cli.shell.CmdShell;
import org.codehaus.plexus.util.cli.shell.CommandShell;
import org.codehaus.plexus.util.cli.shell.Shell;
import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Vector;
/**
*
* Commandline objects help handling command lines specifying processes to
* execute.
*
*
* The class can be used to define a command line as nested elements or as a
* helper to define a command line by an application.
*
*
*
* <someelement>
* <acommandline executable="/executable/to/run">
* <argument value="argument 1" />
* <argument line="argument_1 argument_2 argument_3" />
* <argument value="argument 4" />
* </acommandline>
* </someelement>
*
*
*
* The element someelement must provide a method
* createAcommandline which returns an instance of this class.
*
*
* @author [email protected]
* @author Stefan Bodewig
*/
public class Commandline
implements Cloneable
{
/**
* @deprecated Use {@link org.codehaus.plexus.util.Os} class instead.
*/
protected static final String OS_NAME = "os.name";
/**
* @deprecated Use {@link org.codehaus.plexus.util.Os} class instead.
*/
protected static final String WINDOWS = "Windows";
protected Vector arguments = new Vector();
//protected Vector envVars = new Vector();
// synchronized added to preserve synchronize of Vector class
protected Map envVars = Collections.synchronizedMap( new LinkedHashMap() );
private long pid = -1;
private Shell shell;
/**
* @deprecated Use {@link Commandline#setExecutable(String)} instead.
*/
protected String executable;
/**
* @deprecated Use {@link Commandline#setWorkingDirectory(File)} or
* {@link Commandline#setWorkingDirectory(String)} instead.
*/
private File workingDir;
/**
* Create a new command line object.
* Shell is autodetected from operating system
*
* Shell usage is only desirable when generating code for remote execution.
*
* @param toProcess
*/
public Commandline( String toProcess, Shell shell )
{
this.shell = shell;
String[] tmp = new String[0];
try
{
tmp = CommandLineUtils.translateCommandline( toProcess );
}
catch ( Exception e )
{
System.err.println( "Error translating Commandline." );
}
if ( ( tmp != null ) && ( tmp.length > 0 ) )
{
setExecutable( tmp[0] );
for ( int i = 1; i < tmp.length; i++ )
{
createArgument().setValue( tmp[i] );
}
}
}
/**
* Create a new command line object.
* Shell is autodetected from operating system
*
* Shell usage is only desirable when generating code for remote execution.
*/
public Commandline( Shell shell )
{
this.shell = shell;
}
/**
* Create a new command line object, given a command following POSIX sh quoting rules
*
* @param toProcess
*/
public Commandline( String toProcess )
{
setDefaultShell();
String[] tmp = new String[0];
try
{
tmp = CommandLineUtils.translateCommandline( toProcess );
}
catch ( Exception e )
{
System.err.println( "Error translating Commandline." );
}
if ( ( tmp != null ) && ( tmp.length > 0 ) )
{
setExecutable( tmp[0] );
for ( int i = 1; i < tmp.length; i++ )
{
createArgument().setValue( tmp[i] );
}
}
}
/**
* Create a new command line object.
*/
public Commandline()
{
setDefaultShell();
}
public long getPid()
{
if ( pid == -1 )
{
pid = Long.parseLong( String.valueOf( System.currentTimeMillis() ) );
}
return pid;
}
public void setPid( long pid )
{
this.pid = pid;
}
/**
* Class to keep track of the position of an Argument.
*/
// This class is there to support the srcfile and targetfile
// elements of <execon> and <transform> - don't know
// whether there might be additional use cases.
--SB
public class Marker
{
private int position;
private int realPos = -1;
Marker( int position )
{
this.position = position;
}
/**
* Return the number of arguments that preceeded this marker.
*
* The name of the executable - if set - is counted as the
* very first argument.
*/
public int getPosition()
{
if ( realPos == -1 )
{
realPos = ( getLiteralExecutable() == null ? 0 : 1 );
for ( int i = 0; i < position; i++ )
{
Arg arg = (Arg) arguments.elementAt( i );
realPos += arg.getParts().length;
}
}
return realPos;
}
}
/**
* Sets the shell or command-line interpretor for the detected operating system,
* and the shell arguments.
*/
private void setDefaultShell()
{
//If this is windows set the shell to command.com or cmd.exe with correct arguments.
if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
{
if ( Os.isFamily( Os.FAMILY_WIN9X ) )
{
setShell( new CommandShell() );
}
else
{
setShell( new CmdShell() );
}
}
else
{
setShell( new BourneShell() );
}
}
/**
* Creates an argument object.
*
* Each commandline object has at most one instance of the
* argument class. This method calls
* this.createArgument(false).
*
* @return the argument object.
* @see #createArgument(boolean)
* @deprecated Use {@link Commandline#createArg()} instead
*/
public Argument createArgument()
{
return this.createArgument( false );
}
/**
* Creates an argument object and adds it to our list of args.
*
* Each commandline object has at most one instance of the
* argument class.
*
* @param insertAtStart if true, the argument is inserted at the
* beginning of the list of args, otherwise it is appended.
* @deprecated Use {@link Commandline#createArg(boolean)} instead
*/
public Argument createArgument( boolean insertAtStart )
{
Argument argument = new Argument();
if ( insertAtStart )
{
arguments.insertElementAt( argument, 0 );
}
else
{
arguments.addElement( argument );
}
return argument;
}
/**
* Creates an argument object.
*
* Each commandline object has at most one instance of the
* argument class. This method calls
* this.createArgument(false).
*
* @return the argument object.
* @see #createArgument(boolean)
*/
public Arg createArg()
{
return this.createArg( false );
}
/**
* Creates an argument object and adds it to our list of args.
*
* Each commandline object has at most one instance of the
* argument class.
*
* @param insertAtStart if true, the argument is inserted at the
* beginning of the list of args, otherwise it is appended.
*/
public Arg createArg( boolean insertAtStart )
{
Arg argument = new Argument();
if ( insertAtStart )
{
arguments.insertElementAt( argument, 0 );
}
else
{
arguments.addElement( argument );
}
return argument;
}
/**
* Adds an argument object to our list of args.
*
* @return the argument object.
* @see #addArg(Arg,boolean)
*/
public void addArg( Arg argument )
{
this.addArg( argument, false );
}
/**
* Adds an argument object to our list of args.
*
* @param insertAtStart if true, the argument is inserted at the
* beginning of the list of args, otherwise it is appended.
*/
public void addArg( Arg argument, boolean insertAtStart )
{
if ( insertAtStart )
{
arguments.insertElementAt( argument, 0 );
}
else
{
arguments.addElement( argument );
}
}
/**
* Sets the executable to run.
*/
public void setExecutable( String executable )
{
shell.setExecutable( executable );
this.executable = executable;
}
/**
* @return Executable to be run, as a literal string (no shell quoting/munging)
*/
public String getLiteralExecutable()
{
return executable;
}
/**
* Return an executable name, quoted for shell use.
*
* Shell usage is only desirable when generating code for remote execution.
*
* @return Executable to be run, quoted for shell interpretation
*/
public String getExecutable()
{
String exec = shell.getExecutable();
if ( exec == null )
{
exec = executable;
}
return exec;
}
public void addArguments( String[] line )
{
for ( String aLine : line )
{
createArgument().setValue( aLine );
}
}
/**
* Add an environment variable
*/
public void addEnvironment( String name, String value )
{
//envVars.add( name + "=" + value );
envVars.put( name, value );
}
/**
* Add system environment variables
*/
public void addSystemEnvironment()
throws Exception
{
Properties systemEnvVars = CommandLineUtils.getSystemEnvVars();
for ( Object o : systemEnvVars.keySet() )
{
String key = (String) o;
if ( !envVars.containsKey( key ) )
{
addEnvironment( key, systemEnvVars.getProperty( key ) );
}
}
}
/**
* Return the list of environment variables
*/
public String[] getEnvironmentVariables()
throws CommandLineException
{
try
{
addSystemEnvironment();
}
catch ( Exception e )
{
throw new CommandLineException( "Error setting up environmental variables", e );
}
String[] environmentVars = new String[envVars.size()];
int i = 0;
for ( Object o : envVars.keySet() )
{
String name = (String) o;
String value = (String) envVars.get( name );
environmentVars[i] = name + "=" + value;
i++;
}
return environmentVars;
}
/**
* Returns the executable and all defined arguments.
*/
public String[] getCommandline()
{
final String[] args = getArguments();
String executable = getLiteralExecutable();
if ( executable == null )
{
return args;
}
final String[] result = new String[args.length + 1];
result[0] = executable;
System.arraycopy( args, 0, result, 1, args.length );
return result;
}
/**
* Returns the shell, executable and all defined arguments.
*
* Shell usage is only desirable when generating code for remote execution.
*/
public String[] getShellCommandline()
{
// TODO: Provided only for backward compat. with <= 1.4
verifyShellState();
return (String[]) getShell().getShellCommandLine( getArguments() ).toArray( new String[0] );
}
/**
* Returns all arguments defined by addLine,
* addValue or the argument object.
*/
public String[] getArguments()
{
Vector result = new Vector( arguments.size() * 2 );
for ( int i = 0; i < arguments.size(); i++ )
{
Arg arg = arguments.elementAt( i );
String[] s = arg.getParts();
if ( s != null )
{
for ( String value : s )
{
result.addElement( value );
}
}
}
String[] res = new String[result.size()];
result.copyInto( res );
return res;
}
public String toString()
{
return StringUtils.join( getShellCommandline(), " " );
}
public int size()
{
return getCommandline().length;
}
public Object clone()
{
Commandline c = new Commandline( (Shell) shell.clone() );
c.executable = executable;
c.workingDir = workingDir;
c.addArguments( getArguments() );
return c;
}
/**
* Clear out the whole command line.
*/
public void clear()
{
executable = null;
workingDir = null;
shell.setExecutable( null );
shell.clearArguments();
arguments.removeAllElements();
}
/**
* Clear out the arguments but leave the executable in place for another operation.
*/
public void clearArgs()
{
arguments.removeAllElements();
}
/**
* Return a marker.
*
* This marker can be used to locate a position on the
* commandline - to insert something for example - when all
* parameters have been set.
*/
public Marker createMarker()
{
return new Marker( arguments.size() );
}
/**
* Sets execution directory.
*/
public void setWorkingDirectory( String path )
{
shell.setWorkingDirectory( path );
workingDir = new File( path );
}
/**
* Sets execution directory.
*/
public void setWorkingDirectory( File workingDirectory )
{
shell.setWorkingDirectory( workingDirectory );
workingDir = workingDirectory;
}
public File getWorkingDirectory()
{
File workDir = shell.getWorkingDirectory();
if ( workDir == null )
{
workDir = workingDir;
}
return workDir;
}
/**
* Executes the command.
*/
public Process execute()
throws CommandLineException
{
// TODO: Provided only for backward compat. with <= 1.4
verifyShellState();
Process process;
//addEnvironment( "MAVEN_TEST_ENVAR", "MAVEN_TEST_ENVAR_VALUE" );
String[] environment = getEnvironmentVariables();
File workingDir = shell.getWorkingDirectory();
try
{
if ( workingDir == null )
{
process = Runtime.getRuntime().exec( getCommandline(), environment, workingDir );
}
else
{
if ( !workingDir.exists() )
{
throw new CommandLineException( "Working directory \"" + workingDir.getPath()
+ "\" does not exist!" );
}
else if ( !workingDir.isDirectory() )
{
throw new CommandLineException( "Path \"" + workingDir.getPath()
+ "\" does not specify a directory." );
}
process = Runtime.getRuntime().exec( getCommandline(), environment, workingDir );
}
}
catch ( IOException ex )
{
throw new CommandLineException( "Error while executing process.", ex );
}
return process;
}
/**
* @deprecated Remove once backward compat with plexus-utils <= 1.4 is no longer a consideration
*/
private void verifyShellState()
{
if ( shell.getWorkingDirectory() == null )
{
shell.setWorkingDirectory( workingDir );
}
if ( shell.getOriginalExecutable() == null )
{
shell.setExecutable( executable );
}
}
public Properties getSystemEnvVars()
throws Exception
{
return CommandLineUtils.getSystemEnvVars();
}
/**
* Allows to set the shell to be used in this command line.
*
* Shell usage is only desirable when generating code for remote execution.
*
* @param shell
* @since 1.2
*/
public void setShell( Shell shell )
{
this.shell = shell;
}
/**
* Get the shell to be used in this command line.
*
* Shell usage is only desirable when generating code for remote execution.
* @since 1.2
*/
public Shell getShell()
{
return shell;
}
/**
* @deprecated Use {@link CommandLineUtils#translateCommandline(String)} instead.
*/
public static String[] translateCommandline( String toProcess )
throws Exception
{
return CommandLineUtils.translateCommandline( toProcess );
}
/**
* @deprecated Use {@link CommandLineUtils#quote(String)} instead.
*/
public static String quoteArgument( String argument )
throws CommandLineException
{
return CommandLineUtils.quote( argument );
}
/**
* @deprecated Use {@link CommandLineUtils#toString(String[])} instead.
*/
public static String toString( String[] line )
{
return CommandLineUtils.toString( line );
}
public static class Argument
implements Arg
{
private String[] parts;
/* (non-Javadoc)
* @see org.codehaus.plexus.util.cli.Argumnt#setValue(java.lang.String)
*/
public void setValue( String value )
{
if ( value != null )
{
parts = new String[] { value };
}
}
/* (non-Javadoc)
* @see org.codehaus.plexus.util.cli.Argumnt#setLine(java.lang.String)
*/
public void setLine( String line )
{
if ( line == null )
{
return;
}
try
{
parts = CommandLineUtils.translateCommandline( line );
}
catch ( Exception e )
{
System.err.println( "Error translating Commandline." );
}
}
/* (non-Javadoc)
* @see org.codehaus.plexus.util.cli.Argumnt#setFile(java.io.File)
*/
public void setFile( File value )
{
parts = new String[] { value.getAbsolutePath() };
}
/* (non-Javadoc)
* @see org.codehaus.plexus.util.cli.Argumnt#getParts()
*/
public String[] getParts()
{
return parts;
}
}
}
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