Package org.apache.commons.exec

Class CommandLine

java.lang.Object
org.apache.commons.exec.CommandLine
public class CommandLine extends Object
CommandLine objects help handling command lines specifying processes to execute. The class can be used to a command line by an application.
Version:
$Id: CommandLine.java 1613094 2014-07-24 12:20:14Z ggregory $

  • Field Details

    • arguments

      private final Vector<CommandLine.Argument> arguments
      The arguments of the command.

    • executable

      private final String executable
      The program to execute.

    • substitutionMap

      private Map<String,?> substitutionMap
      A map of name value pairs used to expand command line arguments

    • isFile

      private final boolean isFile
      Was a file being used to set the executable?

  • Constructor Details

    • CommandLine

      public CommandLine(String executable)
      Create a command line without any arguments.
      Parameters:
      executable - the executable

    • CommandLine

      public CommandLine(File executable)
      Create a command line without any arguments.
      Parameters:
      executable - the executable file

    • CommandLine

      public CommandLine(CommandLine other)
      Copy constructor.
      Parameters:
      other - the instance to copy

  • Method Details

    • parse

      public static CommandLine parse(String line)
      Create a command line from a string.
      Parameters:
      line - the first element becomes the executable, the rest the arguments
      Returns:
      the parsed command line
      Throws:
      IllegalArgumentException - If line is null or all whitespace

    • parse

      public static CommandLine parse(String line, Map<String,?> substitutionMap)
      Create a command line from a string.
      Parameters:
      line - the first element becomes the executable, the rest the arguments
      substitutionMap - the name/value pairs used for substitution
      Returns:
      the parsed command line
      Throws:
      IllegalArgumentException - If line is null or all whitespace

    • getExecutable

      public String getExecutable()
      Returns the executable.
      Returns:
      The executable

    • isFile

      public boolean isFile()
      Was a file being used to set the executable?
      Returns:
      true if a file was used for setting the executable

    • addArguments

      public CommandLine addArguments(String[] addArguments)
      Add multiple arguments. Handles parsing of quotes and whitespace.
      Parameters:
      addArguments - An array of arguments
      Returns:
      The command line itself

    • addArguments

      public CommandLine addArguments(String[] addArguments, boolean handleQuoting)
      Add multiple arguments.
      Parameters:
      addArguments - An array of arguments
      handleQuoting - Add the argument with/without handling quoting
      Returns:
      The command line itself

    • addArguments

      public CommandLine addArguments(String addArguments)
      Add multiple arguments. Handles parsing of quotes and whitespace. Please note that the parsing can have undesired side-effects therefore it is recommended to build the command line incrementally.
      Parameters:
      addArguments - An string containing multiple arguments.
      Returns:
      The command line itself

    • addArguments

      public CommandLine addArguments(String addArguments, boolean handleQuoting)
      Add multiple arguments. Handles parsing of quotes and whitespace. Please note that the parsing can have undesired side-effects therefore it is recommended to build the command line incrementally.
      Parameters:
      addArguments - An string containing multiple arguments.
      handleQuoting - Add the argument with/without handling quoting
      Returns:
      The command line itself

    • addArgument

      public CommandLine addArgument(String argument)
      Add a single argument. Handles quoting.
      Parameters:
      argument - The argument to add
      Returns:
      The command line itself
      Throws:
      IllegalArgumentException - If argument contains both single and double quotes

    • addArgument

      public CommandLine addArgument(String argument, boolean handleQuoting)
      Add a single argument.
      Parameters:
      argument - The argument to add
      handleQuoting - Add the argument with/without handling quoting
      Returns:
      The command line itself

    • getArguments

      public String[] getArguments()
      Returns the expanded and quoted command line arguments.
      Returns:
      The quoted arguments

    • getSubstitutionMap

      public Map<String,?> getSubstitutionMap()
      Returns:
      the substitution map

    • setSubstitutionMap

      public void setSubstitutionMap(Map<String,?> substitutionMap)
      Set the substitutionMap to expand variables in the command line.
      Parameters:
      substitutionMap - the map

    • toStrings

      public String[] toStrings()
      Returns the command line as an array of strings.
      Returns:
      The command line as an string array

    • toString

      public String toString()
      Stringify operator returns the command line as a string. Parameters are correctly quoted when containing a space or left untouched if the are already quoted.
      Overrides:
      toString in class Object
      Returns:
      the command line as single string

    • expandArgument

      private String expandArgument(String argument)
      Expand variables in a command line argument.
      Parameters:
      argument - the argument
      Returns:
      the expanded string

    • translateCommandline

      private static String[] translateCommandline(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

    • toCleanExecutable

      private String toCleanExecutable(String dirtyExecutable)
      Cleans the executable string. The argument is trimmed and '/' and '\\' are replaced with the platform specific file separator char
      Parameters:
      dirtyExecutable - the executable
      Returns:
      the platform-specific executable string