readline.c

/*
    Replace libreadline.

    Copyright (C) 2015 Jonathan Pelletier <funmungus(a)gmail.com>

    This file is part of libscanmem.

    This library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published
    by the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this library.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>

#include "readline.h"
#include "getline.h"

int rl_attempted_completion_over = 0;
const char *rl_readline_name = "scanmem";
rl_completion_func_t *rl_attempted_completion_function = NULL;

/* always return NULL to show that there are no completions */
char **rl_completion_matches(const char *text, rl_compentry_func_t
                             *entry_function)
{
    return NULL;
}

/* show the prompt, then allocate, read and
   return a line with getline() */
char *readline(const char *prompt)
{
    char *line = NULL;
    size_t n = 0;
    ssize_t bytes_read;

    printf("%s", prompt);
    fflush(stdout);
    bytes_read = getline(&line, &n, stdin);
    if (bytes_read > 0)
        line[bytes_read - 1] = '\0';  /* remove the trailing newline */

    return line;
}

/* don't maintain a history */
void add_history(const char *line) {}
int read_history (const char *filename) { return 0; }
int write_history (const char *filename) { return 0; }
int history_truncate_file (const char *filename, int nlines) { return 0; }