lnav/test/drive_readline_curses.cc

/**
 * Copyright (c) 2007-2012, Timothy Stack
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <assert.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "config.h"

#ifdef HAVE_SYS_TTYDEFAULTS_H
#    include <sys/ttydefaults.h>
#endif

#include <algorithm>

#include "../src/lnav_util.hh"
#include "lnav_util.hh"
#include "readline_curses.hh"

using namespace std;

static readline_context::command_map_t COMMANDS;

static struct {
    bool dd_active;
    readline_curses* dd_rl_view;
    volatile sig_atomic_t dd_looping;
} drive_data;

static void
rl_callback(readline_curses* rc)
{
    string line = rc->get_value().get_string();

    if (line == "quit")
        drive_data.dd_looping = false;
    fprintf(stderr, "callback\n");
    drive_data.dd_active = false;
}

static void
rl_timeout(readline_curses* rc)
{
    fprintf(stderr, "timeout\n");
}

int
main(int argc, char* argv[])
{
    int c, fd, retval = EXIT_SUCCESS;

    fd = open("/tmp/lnav.err", O_WRONLY | O_CREAT | O_APPEND, 0666);
    dup2(fd, STDERR_FILENO);
    close(fd);
    fprintf(stderr, "startup\n");

    while ((c = getopt(argc, argv, "h")) != -1) {
        switch (c) {
            case 'h':
                break;
            default:
                break;
        }
    }

    auto psuperv = std::make_shared<pollable_supervisor>();
    readline_context context("test", &COMMANDS);
    readline_curses rlc(psuperv);

    rlc.add_context(1, context);
    rlc.start();

    drive_data.dd_rl_view = &rlc;

    screen_curses sc;

    keypad(stdscr, TRUE);
    nonl();
    cbreak();
    noecho();
    nodelay(sc.get_window(), 1);

    rlc.set_window(sc.get_window());
    rlc.set_y(-1);
    rlc.set_perform_action(rl_callback);
    rlc.set_timeout_action(rl_timeout);

    drive_data.dd_looping = true;
    while (drive_data.dd_looping) {
        vector<struct pollfd> pollfds;
        int rc;

        pollfds.push_back((struct pollfd){STDIN_FILENO, POLLIN, 0});
        psuperv->update_poll_set(pollfds);

        rlc.do_update();
        refresh();
        rc = poll(&pollfds[0], pollfds.size(), -1);
        if (rc > 0) {
            if (pollfd_ready(pollfds, STDIN_FILENO)) {
                int ch;

                while ((ch = getch()) != ERR) {
                    switch (ch) {
                        case CEOF:
                        case KEY_RESIZE:
                            break;

                        default:
                            if (drive_data.dd_active) {
                                rlc.handle_key(ch);
                            } else if (ch == ':') {
                                rlc.focus(1, ":");
                                drive_data.dd_active = true;
                            }
                            break;
                    }
                }
            }
            psuperv->check_poll_set(pollfds);
        }
    }

    return retval;
}