drcl.ruv
Class ShellContract

java.lang.Object
  |
  +--drcl.comp.Contract
        |
        +--drcl.ruv.ShellContract

public class ShellContract

extends Contract

The Shell contract. This contract defines the following services at the reactor:

ExecuteFile

The initiator sends a request that consists of:

1. an integer of value 0 (the "execute file" command),
2. the name of the script file (String).
3. arguments (String[]), may be null.

In response, the reactor opens the file and executes the scripts in the file.

ExecuteCommands

The initiator sends a request that consists of:

1. an integer of value 1 (the "execute commands" command) and
2. the commands (String).

In response, the reactor executes the command and replies "CommandFinished".

Autocomplete

The initiator sends a request that consists of:

1. an integer of value 2 (the "autocomplete" command),
2. The command in construction (String) and
3. The position in the command for autocomplete (int).

In response, the reactor sends back the result by "SetCommand" and "CommandFinished".

Interrupt

The initiator sends a request that consists of only a field of integer 3 (the "interrupt" command). In response, the reactor interrupts the command that is currently being executed or the partial command that is currently being constructed, and replies with "CommandFinished".

The reactor may send back the following replies in response of a request:

CommandFinished

The initiator sends a message that consists of:

1. an integer of value 3 (the "command finished" command), and
2. a new prompt (String), may be null.

SetCommand

The initiator sends a message that consists of:

1. an integer of value 4 (the "set command" command),
2. The command in construction (String) and
3. The current position in the command (int).

PrintResult

The initiator sends a message that consists of:

1. an integer of value 5 (the "result" command), and
2. The result (String).

Version:

1.0, 1/25/2001

Author:

Hung-ying Tyan

Inner Class Summary

static class

ShellContract.Message

Field Summary

static int	AUTOCOMPLETE
static int	COMMAND_FINISHED
static int	EXECUTE_COMMANDS
static int	EXECUTE_FILE
static ShellContract	INSTANCE
static int	INTERRUPT
static int	PRINT_RESULT
static java.lang.String	REPLY
static java.lang.String	REQUEST
static int	SET_COMMAND

Fields inherited from class drcl.comp.Contract

Role_INITIATOR, Role_PEER, Role_REACTOR

Constructor Summary

ShellContract()

Method Summary

static void	commandFinished(java.lang.String prompt_, Port p_, boolean lastSend_)
static ShellContract.Message	createAutocompleteRequest(java.lang.String cmd_, int pos_)
static ShellContract.Message	createCommandFinishedReply(java.lang.String prompt_)
static ShellContract.Message	createExecuteCommandsRequest(java.lang.String cmd_)
static ShellContract.Message	createExecuteFileRequest(java.lang.String fname_, java.lang.String[] args_)
static ShellContract.Message	createInterruptRequest()
static ShellContract.Message	createPrintResultReply(java.lang.String result_)
static ShellContract.Message	createSetCommandReply(java.lang.String cmd_, int pos_)
java.lang.Object	getContractContent() Returns the content of this contract (format?).
java.lang.String	getName()
static void	printResult(java.lang.String result_, Port p_, boolean lastSend_)
static void	setCommand(java.lang.String cmd_, int pos_, Port p_, boolean lastSend_)

Methods inherited from class drcl.comp.Contract

getRole, match, setRole

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ShellContract INSTANCE

REQUEST

public static final java.lang.String REQUEST

REPLY

public static final java.lang.String REPLY

EXECUTE_FILE

public static final int EXECUTE_FILE

EXECUTE_COMMANDS

public static final int EXECUTE_COMMANDS

AUTOCOMPLETE

public static final int AUTOCOMPLETE

INTERRUPT

public static final int INTERRUPT

COMMAND_FINISHED

public static final int COMMAND_FINISHED

SET_COMMAND

public static final int SET_COMMAND

PRINT_RESULT

public static final int PRINT_RESULT

Constructor Detail

ShellContract

public ShellContract()

Method Detail

getName

public java.lang.String getName()

Overrides:

getName in class Contract

getContractContent

public java.lang.Object getContractContent()

Description copied from class: Contract

Returns the content of this contract (format?).

Overrides:

getContractContent in class Contract

createExecuteFileRequest

public static ShellContract.Message createExecuteFileRequest(java.lang.String fname_,
                                                             java.lang.String[] args_)

createExecuteCommandsRequest

public static ShellContract.Message createExecuteCommandsRequest(java.lang.String cmd_)

createInterruptRequest

public static ShellContract.Message createInterruptRequest()

createAutocompleteRequest

public static ShellContract.Message createAutocompleteRequest(java.lang.String cmd_,
                                                              int pos_)

createSetCommandReply

public static ShellContract.Message createSetCommandReply(java.lang.String cmd_,
                                                          int pos_)

createCommandFinishedReply

public static ShellContract.Message createCommandFinishedReply(java.lang.String prompt_)

createPrintResultReply

public static ShellContract.Message createPrintResultReply(java.lang.String result_)

setCommand

public static void setCommand(java.lang.String cmd_,
                              int pos_,
                              Port p_,
                              boolean lastSend_)

commandFinished

public static void commandFinished(java.lang.String prompt_,
                                   Port p_,
                                   boolean lastSend_)

printResult

public static void printResult(java.lang.String result_,
                               Port p_,
                               boolean lastSend_)