/*      $OpenBSD: test_read_char.c,v 1.5 2017/07/05 15:31:45 bluhm Exp $        */
/*
 * Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <err.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>

#include "read.c"
#include "glue.c"

/*
 * Unit test steering program for editline/read.c, read_char().
 * Reads from standard input until read_char() returns 0.
 * Writes the code points read to standard output in %x format.
 * If EILSEQ is set after read_char(), indicating that there were some
 * garbage bytes before the character, the code point gets * prefixed.
 * The return value is indicated by appending to the code point:
 * a comma for 1, a full stop for 0, [%d] otherwise.
 * Errors out on unexpected failure (setlocale failure, malloc
 * failure, or unexpected errno).
 * Since ENOMSG is very unlikely to occur, it is used to make
 * sure that read_char() doesn't clobber errno.
 */

int
main(void)
{
        EditLine el;
        int irc;
        wchar_t cp;

        if (setlocale(LC_CTYPE, "") == NULL)
                err(1, "setlocale");
        el.el_flags = CHARSET_IS_UTF8;
        el.el_infd = STDIN_FILENO;
        if ((el.el_signal = calloc(1, sizeof(*el.el_signal))) == NULL)
                err(1, NULL);
        do {
                errno = ENOMSG;
                irc = read_char(&el, &cp);
                switch (errno) {
                case ENOMSG:
                        break;
                case EILSEQ:
                        putchar('*');
                        break;
                default:
                        err(1, NULL);
                }
                printf("%x", cp);
                switch (irc) {
                case 1:
                        putchar(',');
                        break;
                case 0:
                        putchar('.');
                        break;
                default:
                        printf("[%d]", irc);
                        break;
                }
        } while (irc != 0);
        return 0;
}