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package org.codehaus.plexus.util.cli.shell;
/*
* 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
* 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.StringUtils;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Class that abstracts the Shell functionality, with subclasses for shells that behave particularly, like
*
*
command.com
*
cmd.exe
*
*
* @author Carlos Sanchez
* @since 1.2
*
*/
public class Shell
implements Cloneable
{
private static final char[] DEFAULT_QUOTING_TRIGGER_CHARS = { ' ' };
private String shellCommand;
private List shellArgs = new ArrayList();
private boolean quotedArgumentsEnabled = true;
private boolean unconditionallyQuote = false;
private String executable;
private String workingDir;
private boolean quotedExecutableEnabled = true;
private boolean doubleQuotedArgumentEscaped = false;
private boolean singleQuotedArgumentEscaped = false;
private boolean doubleQuotedExecutableEscaped = false;
private boolean singleQuotedExecutableEscaped = false;
private char argQuoteDelimiter = '\"';
private char exeQuoteDelimiter = '\"';
private String argumentEscapePattern = "\\%s";
/**
* Toggle unconditional quoting
*
* @param unconditionallyQuote see name
*/
public void setUnconditionalQuoting( boolean unconditionallyQuote )
{
this.unconditionallyQuote = unconditionallyQuote;
}
/**
* Set the command to execute the shell (eg. COMMAND.COM, /bin/bash,...)
*
* @param shellCommand see name
*/
public void setShellCommand( String shellCommand )
{
this.shellCommand = shellCommand;
}
/**
* Get the command to execute the shell
*
* @return the command
*/
public String getShellCommand()
{
return shellCommand;
}
/**
* Set the shell arguments when calling a command line (not the executable arguments) (eg. /X /C for CMD.EXE)
*
* @param shellArgs see name
*/
public void setShellArgs( String[] shellArgs )
{
this.shellArgs.clear();
this.shellArgs.addAll( Arrays.asList( shellArgs ) );
}
/**
* @return the shell arguments
*/
public String[] getShellArgs()
{
if ( ( shellArgs == null ) || shellArgs.isEmpty() )
{
return null;
}
else
{
return shellArgs.toArray( new String[0] );
}
}
/**
* Get the command line for the provided executable and arguments in this shell
*
* @param executable executable that the shell has to call
* @param arguments arguments for the executable, not the shell
* @return List with one String object with executable and arguments quoted as needed
*/
public List getCommandLine( String executable, String[] arguments )
{
return getRawCommandLine( executable, arguments );
}
protected String quoteOneItem( String inputString, boolean isExecutable )
{
char[] escapeChars = getEscapeChars( isSingleQuotedExecutableEscaped(), isDoubleQuotedExecutableEscaped() );
return StringUtils.quoteAndEscape( inputString,
isExecutable ? getExecutableQuoteDelimiter() : getArgumentQuoteDelimiter(),
escapeChars, getQuotingTriggerChars(), '\\', unconditionallyQuote );
}
protected List getRawCommandLine( String executable, String[] arguments )
{
List commandLine = new ArrayList();
StringBuilder sb = new StringBuilder();
if ( executable != null )
{
String preamble = getExecutionPreamble();
if ( preamble != null )
{
sb.append( preamble );
}
if ( isQuotedExecutableEnabled() )
{
sb.append( quoteOneItem( getOriginalExecutable(), true ) );
}
else
{
sb.append( getExecutable() );
}
}
for ( String argument : arguments )
{
if ( sb.length() > 0 )
{
sb.append( " " );
}
if ( isQuotedArgumentsEnabled() )
{
sb.append( quoteOneItem( argument, false ) );
}
else
{
sb.append( argument );
}
}
commandLine.add( sb.toString() );
return commandLine;
}
protected char[] getQuotingTriggerChars()
{
return DEFAULT_QUOTING_TRIGGER_CHARS;
}
protected String getExecutionPreamble()
{
return null;
}
protected char[] getEscapeChars( boolean includeSingleQuote, boolean includeDoubleQuote )
{
StringBuilder buf = new StringBuilder( 2 );
if ( includeSingleQuote )
{
buf.append( '\'' );
}
if ( includeDoubleQuote )
{
buf.append( '\"' );
}
char[] result = new char[buf.length()];
buf.getChars( 0, buf.length(), result, 0 );
return result;
}
protected boolean isDoubleQuotedArgumentEscaped()
{
return doubleQuotedArgumentEscaped;
}
protected boolean isSingleQuotedArgumentEscaped()
{
return singleQuotedArgumentEscaped;
}
protected boolean isDoubleQuotedExecutableEscaped()
{
return doubleQuotedExecutableEscaped;
}
protected boolean isSingleQuotedExecutableEscaped()
{
return singleQuotedExecutableEscaped;
}
protected void setArgumentQuoteDelimiter( char argQuoteDelimiter )
{
this.argQuoteDelimiter = argQuoteDelimiter;
}
protected char getArgumentQuoteDelimiter()
{
return argQuoteDelimiter;
}
protected void setExecutableQuoteDelimiter( char exeQuoteDelimiter )
{
this.exeQuoteDelimiter = exeQuoteDelimiter;
}
protected char getExecutableQuoteDelimiter()
{
return exeQuoteDelimiter;
}
protected void setArgumentEscapePattern( String argumentEscapePattern )
{
this.argumentEscapePattern = argumentEscapePattern;
}
protected String getArgumentEscapePattern()
{
return argumentEscapePattern;
}
/**
* Get the full command line to execute, including shell command, shell arguments, executable and executable
* arguments
*
* @param arguments arguments for the executable, not the shell
* @return List of String objects, whose array version is suitable to be used as argument of
* Runtime.getRuntime().exec()
*/
public List getShellCommandLine( String[] arguments )
{
List commandLine = new ArrayList();
if ( getShellCommand() != null )
{
commandLine.add( getShellCommand() );
}
if ( getShellArgs() != null )
{
commandLine.addAll( getShellArgsList() );
}
commandLine.addAll( getCommandLine( getOriginalExecutable(), arguments ) );
return commandLine;
}
public List getShellArgsList()
{
return shellArgs;
}
public void addShellArg( String arg )
{
shellArgs.add( arg );
}
public void setQuotedArgumentsEnabled( boolean quotedArgumentsEnabled )
{
this.quotedArgumentsEnabled = quotedArgumentsEnabled;
}
public boolean isQuotedArgumentsEnabled()
{
return quotedArgumentsEnabled;
}
public void setQuotedExecutableEnabled( boolean quotedExecutableEnabled )
{
this.quotedExecutableEnabled = quotedExecutableEnabled;
}
public boolean isQuotedExecutableEnabled()
{
return quotedExecutableEnabled;
}
/**
*
* @param executable Sets the executable to run.
*/
public void setExecutable( String executable )
{
if ( ( executable == null ) || ( executable.length() == 0 ) )
{
return;
}
this.executable = executable.replace( '/', File.separatorChar ).replace( '\\', File.separatorChar );
}
public String getExecutable()
{
return executable;
}
/**
* @param path Sets execution directory.
*/
public void setWorkingDirectory( String path )
{
if ( path != null )
{
workingDir = path;
}
}
/**
* @param workingDir Sets execution directory.
*/
public void setWorkingDirectory( File workingDir )
{
if ( workingDir != null )
{
this.workingDir = workingDir.getAbsolutePath();
}
}
public File getWorkingDirectory()
{
return workingDir == null ? null : new File( workingDir );
}
public String getWorkingDirectoryAsString()
{
return workingDir;
}
public void clearArguments()
{
shellArgs.clear();
}
@Override
public Object clone()
{
Shell shell = new Shell();
shell.setExecutable( getExecutable() );
shell.setWorkingDirectory( getWorkingDirectory() );
shell.setShellArgs( getShellArgs() );
return shell;
}
public String getOriginalExecutable()
{
return executable;
}
public List getOriginalCommandLine( String executable, String[] arguments )
{
return getRawCommandLine( executable, arguments );
}
protected void setDoubleQuotedArgumentEscaped( boolean doubleQuotedArgumentEscaped )
{
this.doubleQuotedArgumentEscaped = doubleQuotedArgumentEscaped;
}
protected void setDoubleQuotedExecutableEscaped( boolean doubleQuotedExecutableEscaped )
{
this.doubleQuotedExecutableEscaped = doubleQuotedExecutableEscaped;
}
protected void setSingleQuotedArgumentEscaped( boolean singleQuotedArgumentEscaped )
{
this.singleQuotedArgumentEscaped = singleQuotedArgumentEscaped;
}
protected void setSingleQuotedExecutableEscaped( boolean singleQuotedExecutableEscaped )
{
this.singleQuotedExecutableEscaped = singleQuotedExecutableEscaped;
}
}
