org.apache.tools.ant.types
Class Commandline

java.lang.Object
  extended byorg.apache.tools.ant.types.Commandline
All Implemented Interfaces:
java.lang.Cloneable

public class Commandline
extends java.lang.Object
implements java.lang.Cloneable

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:
thomas.haas@softwired-inc.com, Stefan Bodewig

Nested Class Summary
static class Commandline.Argument
          Used for nested xml command line definitions.
 class Commandline.Marker
          Class to keep track of the position of an Argument.
 
Field Summary
protected static java.lang.String DISCLAIMER
           
 
Constructor Summary
Commandline()
           
Commandline(java.lang.String to_process)
           
 
Method Summary
 void addArguments(java.lang.String[] line)
           
 void clear()
          Clear out the whole command line.
 void clearArgs()
          Clear out the arguments but leave the executable in place for another operation.
 java.lang.Object clone()
           
 Commandline.Argument createArgument()
          Creates an argument object.
 Commandline.Argument createArgument(boolean insertAtStart)
          Creates an argument object and adds it to our list of args.
 Commandline.Marker createMarker()
          Return a marker.
 java.lang.String describeArguments()
          Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])
static java.lang.String describeArguments(Commandline line)
          Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])
static java.lang.String describeArguments(java.lang.String[] args)
          Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])
protected static java.lang.String describeArguments(java.lang.String[] args, int offset)
          Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])
 java.lang.String describeCommand()
          Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[])
static java.lang.String describeCommand(Commandline line)
          Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[])
static java.lang.String describeCommand(java.lang.String[] args)
          Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[]).
 java.lang.String[] getArguments()
          Returns all arguments defined by addLine, addValue or the argument object.
 java.lang.String[] getCommandline()
          Returns the executable and all defined arguments.
 java.lang.String getExecutable()
           
static java.lang.String quoteArgument(java.lang.String argument)
          Put quotes around the given String if necessary.
 void setExecutable(java.lang.String executable)
          Sets the executable to run.
 int size()
           
 java.lang.String toString()
           
static java.lang.String toString(java.lang.String[] line)
          Quotes the parts of the given array in way that makes them usable as command line arguments.
static java.lang.String[] translateCommandline(java.lang.String to_process)
           
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

DISCLAIMER

protected static final java.lang.String DISCLAIMER
Constructor Detail

Commandline

public Commandline(java.lang.String to_process)

Commandline

public Commandline()
Method Detail

createArgument

public Commandline.Argument createArgument()
Creates an argument object.

Each commandline object has at most one instance of the argument class. This method calls this.createArgument(false).

Returns:
the argument object.
See Also:
createArgument(boolean)

createArgument

public Commandline.Argument createArgument(boolean insertAtStart)
Creates an argument object and adds it to our list of args.

Each commandline object has at most one instance of the argument class.

Parameters:
insertAtStart - if true, the argument is inserted at the beginning of the list of args, otherwise it is appended.

setExecutable

public void setExecutable(java.lang.String executable)
Sets the executable to run.


getExecutable

public java.lang.String getExecutable()

addArguments

public void addArguments(java.lang.String[] line)

getCommandline

public java.lang.String[] getCommandline()
Returns the executable and all defined arguments.


getArguments

public java.lang.String[] getArguments()
Returns all arguments defined by addLine, addValue or the argument object.


toString

public java.lang.String toString()

quoteArgument

public static java.lang.String quoteArgument(java.lang.String argument)
Put quotes around the given String if necessary.

If the argument doesn't include spaces or quotes, return it as is. If it contains double quotes, use single quotes - else surround the argument by double quotes.

Throws:
BuildException - if the argument contains both, single and double quotes.

toString

public static java.lang.String toString(java.lang.String[] line)
Quotes the parts of the given array in way that makes them usable as command line arguments.


translateCommandline

public static java.lang.String[] translateCommandline(java.lang.String to_process)

size

public int size()

clone

public java.lang.Object clone()

clear

public void clear()
Clear out the whole command line.


clearArgs

public void clearArgs()
Clear out the arguments but leave the executable in place for another operation.


createMarker

public Commandline.Marker createMarker()
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.


describeCommand

public java.lang.String describeCommand()
Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[])

Since:
Ant 1.5

describeArguments

public java.lang.String describeArguments()
Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])

Since:
Ant 1.5

describeCommand

public static java.lang.String describeCommand(Commandline line)
Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[])

Since:
Ant 1.5

describeArguments

public static java.lang.String describeArguments(Commandline line)
Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])

Since:
Ant 1.5

describeCommand

public static java.lang.String describeCommand(java.lang.String[] args)
Returns a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[]).

This method assumes that the first entry in the array is the executable to run.

Since:
Ant 1.5

describeArguments

public static java.lang.String describeArguments(java.lang.String[] args)
Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])

Since:
Ant 1.5

describeArguments

protected static java.lang.String describeArguments(java.lang.String[] args,
                                                    int offset)
Returns a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[])

Parameters:
offset - ignore entries before this index
Since:
Ant 1.5


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