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scanw.c revision 1.4 
      1 /*
      2  * Copyright (c) 1981, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)scanw.c	8.1 (Berkeley) 6/4/93";
     36 #endif	/* not lint */
     37 
     38 /*
     39  * scanw and friends.
     40  */
     41 
     42 #include <curses.h>
     43 
     44 #if __STDC__
     45 #include <stdarg.h>
     46 #else
     47 #include <varargs.h>
     48 #endif
     49 
     50 /*
     51  * scanw --
     52  *	Implement a scanf on the standard screen.
     53  */
     54 int
     55 #if __STDC__
     56 scanw(const char *fmt, ...)
     57 #else
     58 scanw(fmt, va_alist)
     59 	char *fmt;
     60 	va_dcl
     61 #endif
     62 {
     63 	va_list ap;
     64 	int ret;
     65 
     66 #if __STDC__
     67 	va_start(ap, fmt);
     68 #else
     69 	va_start(ap);
     70 #endif
     71 	ret = vwscanw(stdscr, fmt, ap);
     72 	va_end(ap);
     73 	return (ret);
     74 }
     75 
     76 /*
     77  * wscanw --
     78  *	Implements a scanf on the given window.
     79  */
     80 int
     81 #if __STDC__
     82 wscanw(WINDOW *win, const char *fmt, ...)
     83 #else
     84 wscanw(win, fmt, va_alist)
     85 	WINDOW *win;
     86 	char *fmt;
     87 	va_dcl
     88 #endif
     89 {
     90 	va_list ap;
     91 	int ret;
     92 
     93 #if __STDC__
     94 	va_start(ap, fmt);
     95 #else
     96 	va_start(ap);
     97 #endif
     98 	ret = vwscanw(win, fmt, ap);
     99 	va_end(ap);
    100 	return (ret);
    101 }
    102 
    103 /*
    104  * mvscanw, mvwscanw --
    105  *	Implement the mvscanw commands.  Due to the variable number of
    106  *	arguments, they cannot be macros.  Another sigh....
    107  */
    108 int
    109 #if __STDC__
    110 mvscanw(register int y, register int x, const char *fmt,...)
    111 #else
    112 mvscanw(y, x, fmt, va_alist)
    113 	register int y, x;
    114 	char *fmt;
    115 	va_dcl
    116 #endif
    117 {
    118 	va_list ap;
    119 	int ret;
    120 
    121 	if (move(y, x) != OK)
    122 		return (ERR);
    123 #if __STDC__
    124 	va_start(ap, fmt);
    125 #else
    126 	va_start(ap);
    127 #endif
    128 	ret = vwscanw(stdscr, fmt, ap);
    129 	va_end(ap);
    130 	return (ret);
    131 }
    132 
    133 int
    134 #if __STDC__
    135 mvwscanw(register WINDOW * win, register int y, register int x,
    136     const char *fmt, ...)
    137 #else
    138 mvwscanw(win, y, x, fmt, va_alist)
    139 	register WINDOW *win;
    140 	register int y, x;
    141 	char *fmt;
    142 	va_dcl
    143 #endif
    144 {
    145 	va_list ap;
    146 	int ret;
    147 
    148 	if (move(y, x) != OK)
    149 		return (ERR);
    150 #if __STDC__
    151 	va_start(ap, fmt);
    152 #else
    153 	va_start(ap);
    154 #endif
    155 	ret = vwscanw(win, fmt, ap);
    156 	va_end(ap);
    157 	return (ret);
    158 }
    159 
    160 /*
    161  * vwscanw --
    162  *	This routine actually executes the scanf from the window.
    163  */
    164 int
    165 vwscanw(win, fmt, ap)
    166 	WINDOW *win;
    167 	const char *fmt;
    168 	va_list ap;
    169 {
    170 
    171 	char buf[1024];
    172 
    173 	return (wgetstr(win, buf) == OK ?
    174 	    vsscanf(buf, fmt, ap) : ERR);
    175 }
    176