Class 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.
    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      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

      Fields 
      Modifier and Type Field Description
      protected static java.lang.String DISCLAIMER  
    • Constructor Summary

      Constructors 
      Constructor Description
      Commandline()
      Create an empty command line.
      Commandline​(java.lang.String toProcess)
      Create a command line from a string.
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addArguments​(java.lang.String[] line)
      Append the arguments to the existing command.
      void addArgumentsToList​(java.util.ListIterator<java.lang.String> list)
      Append all the arguments to the tail of a supplied list.
      void addCommandToList​(java.util.ListIterator<java.lang.String> list)
      Add the entire command, including (optional) executable to a list.
      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()
      Generate a deep clone of the contained object.
      Commandline.Argument createArgument()
      Create an argument object.
      Commandline.Argument createArgument​(boolean insertAtStart)
      Create an argument object and add it to our list of args.
      Commandline.Marker createMarker()
      Return a marker.
      java.lang.String describeArguments()
      Return 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)
      Return 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)
      Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
      static java.lang.String describeArguments​(Commandline line)
      Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
      java.lang.String describeCommand()
      Return 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)
      Return 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)
      Return 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()
      Return the executable and all defined arguments.
      java.lang.String getExecutable()
      Get the executable.
      java.util.Iterator<Commandline.Argument> iterator()
      Get an iterator to the arguments list.
      static java.lang.String quoteArgument​(java.lang.String argument)
      Put quotes around the given String if necessary.
      void setExecutable​(java.lang.String executable)
      Set the executable to run.
      void setExecutable​(java.lang.String executable, boolean translateFileSeparator)
      Set the executable to run.
      int size()
      Size operator.
      java.lang.String toString()
      Return the command line as a string.
      static java.lang.String toString​(java.lang.String[] line)
      Quote the parts of the given array in way that makes them usable as command line arguments.
      static java.lang.String[] translateCommandline​(java.lang.String toProcess)
      Crack a command line.
      • 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 toProcess)
        Create a command line from a string.
        Parameters:
        toProcess - the line: the first element becomes the executable, the rest the arguments.
      • Commandline

        public Commandline()
        Create an empty command line.
    • Method Detail

      • createArgument

        public Commandline.Argument createArgument()
        Create 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)
        Create an argument object and add 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.
        Returns:
        an argument to be configured
      • setExecutable

        public void setExecutable​(java.lang.String executable)
        Set the executable to run. All file separators in the string are converted to the platform specific value.
        Parameters:
        executable - the String executable name.
      • setExecutable

        public void setExecutable​(java.lang.String executable,
                                  boolean translateFileSeparator)
        Set the executable to run.
        Parameters:
        executable - the String executable name.
        translateFileSeparator - if true all file separators in the string are converted to the platform specific value.
        Since:
        Ant 1.9.7
      • getExecutable

        public java.lang.String getExecutable()
        Get the executable.
        Returns:
        the program to run--null if not yet set.
      • addArguments

        public void addArguments​(java.lang.String[] line)
        Append the arguments to the existing command.
        Parameters:
        line - an array of arguments to append.
      • getCommandline

        public java.lang.String[] getCommandline()
        Return the executable and all defined arguments.
        Returns:
        the commandline as an array of strings.
      • addCommandToList

        public void addCommandToList​(java.util.ListIterator<java.lang.String> list)
        Add the entire command, including (optional) executable to a list.
        Parameters:
        list - the list to add to.
        Since:
        Ant 1.6
      • getArguments

        public java.lang.String[] getArguments()
        Returns all arguments defined by addLine, addValue or the argument object.
        Returns:
        the arguments as an array of strings.
      • addArgumentsToList

        public void addArgumentsToList​(java.util.ListIterator<java.lang.String> list)
        Append all the arguments to the tail of a supplied list.
        Parameters:
        list - the list of arguments.
        Since:
        Ant 1.6
      • toString

        public java.lang.String toString()
        Return the command line as a string.
        Overrides:
        toString in class java.lang.Object
        Returns:
        the command line.
      • 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.

        Parameters:
        argument - the argument to quote if necessary.
        Returns:
        the quoted argument.
        Throws:
        BuildException - if the argument contains both, single and double quotes.
      • toString

        public static java.lang.String toString​(java.lang.String[] line)
        Quote the parts of the given array in way that makes them usable as command line arguments.
        Parameters:
        line - the list of arguments to quote.
        Returns:
        empty string for null or no command, else every argument split by spaces and quoted by quoting rules.
      • translateCommandline

        public static java.lang.String[] translateCommandline​(java.lang.String toProcess)
        Crack a command line.
        Parameters:
        toProcess - the command line to process.
        Returns:
        the command line broken into strings. An empty or null toProcess parameter results in a zero sized array.
      • size

        public int size()
        Size operator. This actually creates the command line, so it is not a zero cost operation.
        Returns:
        number of elements in the command, including the executable.
      • clone

        public java.lang.Object clone()
        Generate a deep clone of the contained object.
        Overrides:
        clone in class java.lang.Object
        Returns:
        a clone of the contained object
      • 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.

        Returns:
        a marker
      • describeCommand

        public java.lang.String describeCommand()
        Return a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Returns:
        a string that describes the command and arguments.
        Since:
        Ant 1.5
      • describeArguments

        public java.lang.String describeArguments()
        Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Returns:
        a string that describes the arguments.
        Since:
        Ant 1.5
      • describeCommand

        public static java.lang.String describeCommand​(Commandline line)
        Return a String that describes the command and arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Parameters:
        line - the Commandline to describe.
        Returns:
        a string that describes the command and arguments.
        Since:
        Ant 1.5
      • describeArguments

        public static java.lang.String describeArguments​(Commandline line)
        Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Parameters:
        line - the Commandline whose arguments to describe.
        Returns:
        a string that describes the arguments.
        Since:
        Ant 1.5
      • describeCommand

        public static java.lang.String describeCommand​(java.lang.String[] args)
        Return 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.

        Parameters:
        args - the command line to describe as an array of strings
        Returns:
        a string that describes the command and arguments.
        Since:
        Ant 1.5
      • describeArguments

        public static java.lang.String describeArguments​(java.lang.String[] args)
        Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Parameters:
        args - the command line to describe as an array of strings.
        Returns:
        a string that describes the arguments.
        Since:
        Ant 1.5
      • describeArguments

        protected static java.lang.String describeArguments​(java.lang.String[] args,
                                                            int offset)
        Return a String that describes the arguments suitable for verbose output before a call to Runtime.exec(String[]).
        Parameters:
        args - the command line to describe as an array of strings.
        offset - ignore entries before this index.
        Returns:
        a string that describes the arguments
        Since:
        Ant 1.5
      • iterator

        public java.util.Iterator<Commandline.Argument> iterator()
        Get an iterator to the arguments list.
        Returns:
        an Iterator.
        Since:
        Ant 1.7