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Annotation of dgamelaunch-openbsd/mygetnstr.c, Revision 1.1.1.1

1.1       rubenllo    1: /*
                      2:  * Copyright (c) 2004, Jilles Tjoelker
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with
                      6:  * or without modification, are permitted provided that the
                      7:  * following conditions are met:
                      8:  *
                      9:  * 1. Redistributions of source code must retain the above
                     10:  *    copyright notice, this list of conditions and the
                     11:  *    following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the
                     13:  *    above copyright notice, this list of conditions and
                     14:  *    the following disclaimer in the documentation and/or
                     15:  *    other materials provided with the distribution.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
                     18:  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
                     21:  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
                     22:  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
                     23:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     24:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     25:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
                     26:  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
                     27:  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     28:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
                     29:  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
                     30:  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
                     31:  * OF SUCH DAMAGE.
                     32:  */
                     33:
                     34: #include <curses.h>
                     35:
                     36: /* Assumes noecho(). */
                     37: /* As with getnstr(), maxlen does not include the '\0' character. */
                     38:
                     39: int
                     40: mygetnstr(char *buf, int maxlen, int doecho)
                     41: {
                     42:     int c, i;
                     43:
                     44:     i = 0;
                     45:     for (;;)
                     46:     {
                     47:        c = getch();
                     48:        if (c == 8 || c == 127 || c == KEY_BACKSPACE || c == KEY_DC ||
                     49:                c == KEY_LEFT)
                     50:        {
                     51:            if (i > 0)
                     52:            {
                     53:                i--;
                     54:                if (doecho)
                     55:                    addstr("\010 \010");
                     56:            }
                     57:            else
                     58:                beep();
                     59:        }
                     60:        else if (c == 21 || c == 24 || c == KEY_DL) /* ^U/^X */
                     61:        {
                     62:            while (i > 0)
                     63:            {
                     64:                i--;
                     65:                if (doecho)
                     66:                    addstr("\010 \010");
                     67:            }
                     68:        }
                     69:        else if (c == 23) /* ^W */
                     70:        {
                     71:            while (i > 0 && buf[i - 1] == ' ')
                     72:            {
                     73:                i--;
                     74:                if (doecho)
                     75:                    addstr("\010 \010");
                     76:            }
                     77:            while (i > 0 && buf[i - 1] != ' ')
                     78:            {
                     79:                i--;
                     80:                if (doecho)
                     81:                    addstr("\010 \010");
                     82:            }
                     83:        }
                     84:        else if ((c >= ' ' && c <= '~'))
                     85:        {
                     86:            if (i < maxlen)
                     87:            {
                     88:                buf[i] = c;
                     89:                i++;
                     90:                if (doecho)
                     91:                    addch(c);
                     92:            }
                     93:            else
                     94:                beep();
                     95:        }
                     96:        else if (c == 10 || c == 13 || c == KEY_ENTER || c == KEY_RESIZE)
                     97:            break;
                     98:        else if (c == ERR)
                     99:        {
                    100:            buf[i] = 0;
                    101:            return ERR;
                    102:        }
                    103:        else
                    104:            beep();
                    105:     }
                    106:     buf[i] = 0;
                    107:     return OK;
                    108: }
                    109:
                    110: /* vim:ts=8:cin:sw=4
                    111:  */