aQute.lib.getopt

Class CommandLine

java.lang.Object

aQute.lib.getopt.CommandLine

public class CommandLine
extends Object

Helps parsing command lines. This class takes target object, a primary command, and a list of arguments. It will then find the command in the target object. The method of this command must start with a "_" and take an parameter of Options type. Usually this is an interface that extends Options. The methods on this interface are options or flags (when they return boolean).

Constructor Summary

Constructors

Constructor and Description
CommandLine(Reporter reporter)

Method Summary

Methods

Modifier and Type	Method and Description
void	assignOptionValue(Map<String,Object> options, Method m, List<String> args, boolean last) Assign an option, must handle flags, parameters, and parameters that can happen multiple times.
String	execute(Object target, String cmd, List<String> input) Execute a command in a target object with a set of options and arguments and returns help text if something fails.
void	generateDocumentation(Object target, Appendable out)
Map<String,Method>	getCommands(Object target) Parse a class and return a list of command names
<T extends Options> T	getOptions(Class<T> specification, List<String> arguments) Parse the options in a command line and return an interface that provides the options from this command line.
void	help(Formatter f, Object target) Show all commands in a target
void	help(Formatter f, Object target, String cmd) Show the full help for a given command
void	help(Formatter f, Object target, String cmd, Class<? extends Options> specification) Provide a help text.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CommandLine

public CommandLine(Reporter reporter)

Method Detail

execute

public String execute(Object target,
             String cmd,
             List<String> input)
               throws Exception

Execute a command in a target object with a set of options and arguments and returns help text if something fails. Errors are reported.

Throws:

Exception

generateDocumentation

public void generateDocumentation(Object target,
                         Appendable out)

getOptions

public <T extends Options> T getOptions(Class<T> specification,
                               List<String> arguments)
                             throws Exception

Parse the options in a command line and return an interface that provides the options from this command line. This will parse up to (and including) -- or an argument that does not start with -

Throws:

Exception

assignOptionValue

public void assignOptionValue(Map<String,Object> options,
                     Method m,
                     List<String> args,
                     boolean last)

Assign an option, must handle flags, parameters, and parameters that can happen multiple times.

Parameters:

options - The command line map

args - the args input

i - where we are

m - the selected method for this option

last - if this is the last in a multi single character option

help

public void help(Formatter f,
        Object target,
        String cmd,
        Class<? extends Options> specification)

Provide a help text.

help

public void help(Formatter f,
        Object target)
          throws Exception

Show all commands in a target

Throws:

Exception

help

public void help(Formatter f,
        Object target,
        String cmd)

Show the full help for a given command

getCommands

public Map<String,Method> getCommands(Object target)

Parse a class and return a list of command names

Parameters:

target -

Returns: