terminal-chess: src/input.c@ed440bcd9740

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2014 Mike Becker. All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  *

    28  */

    30 #include "input.h"

    31 #include <ctype.h>

    33 void init_colorpairs() {

    34     init_pair(COL_YB, COLOR_YELLOW, COLOR_BLUE);

    35     init_pair(COL_BW, COLOR_BLACK, COLOR_WHITE);

    36     init_pair(COL_WB, COLOR_WHITE, COLOR_BLACK);

    37 }

    39 int prompt_yesno(char *msg) {

    40     printw("%s (y/n)? ", msg);

    41     refresh();

    42     noecho();

    43     int ch;

    44     do {

    45         ch = getch();

    46     } while (ch != 'y' && ch != 'n');

    47     echo();

    49     return ch == 'y';

    50 }

    52 /**

    53  * Asynchronous variant of getnstr().

    54  *

    55  * Needs halfdelay mode enabled!

    56  *

    57  * Warning: you must not call this function for reading into two separate

    58  * buffers at the same time.

    59  *

    60  * Attention: the first byte of the buffer must be zero at the first call, so

    61  * the buffer pointer is initialized correctly.

    62  *

    63  * @param w the window

    64  * @param y the window y position

    65  * @param x the window x position

    66  * @param str the buffer for the read string

    67  * @param len the length of the buffer

    68  * @return 0 if reading is in progress and 1 when a complete line is read

    69  */

    70 int mvwasyncgetnstr(WINDOW* w, int y, int x, char *str, size_t len) {

    71     static size_t pos = 0;

    73     if (*str == '\0') {

    74         memset(str, 0, len);

    75         pos = 0;

    76     }

    78     mvwaddstr(w,y, x, str);

    79     wrefresh(w);

    80     int c = wgetch(w);

    82     if (c != ERR) {

    83         switch (c) {

    84         case '\n':

    85             str[pos] = '\0';

    86             pos = 0;

    87             return 1;

    88         case KEY_BACKSPACE:

    89         case KEY_LEFT:

    90             str[--pos] = '\0';

    91             break;

    92         default:

    93             if (isprint(c) && pos < len-1) {

    94                 str[pos++] = (char) c;

    95             }

    96         }

    97     }

    99     return 0;

   100 }

Mercurial > hg > terminal-chess / file revision