/*
 * Copyright 2012, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */


#include "CliThreadCommand.h"

#include <stdio.h>

#include <AutoLocker.h>

#include "CliContext.h"
#include "Team.h"


CliThreadCommand::CliThreadCommand()
        :
        CliCommand("set or print the current thread",
                "%s [ <thread ID> ]\n"
                "Sets the current thread to <thread ID>, if supplied. Otherwise prints "
                        "the\n"
                "current thread.")
{
}


void
CliThreadCommand::Execute(int argc, const char* const* argv,
        CliContext& context)
{
        if (argc > 2) {
                PrintUsage(argv[0]);
                return;
        }

        if (argc < 2) {
                // no arguments -- print the current thread
                context.PrintCurrentThread();
                return;
        }

        // parse the argument
        char* endPointer;
        long threadID = strtol(argv[1], &endPointer, 0);
        if (*endPointer != '\0' || threadID < 0) {
                printf("Error: Invalid parameter \"%s\"\n", argv[1]);
                return;
        }

        // get the thread and change the current thread
        Team* team = context.GetTeam();
        AutoLocker<Team> teamLocker(team);
        if (Thread* thread = team->ThreadByID(threadID))
                context.SetCurrentThread(thread);
        else
                printf("Error: No thread with ID %ld\n", threadID);
}