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scanw.c revision 1.3 
      1 /*
      2  * Copyright (c) 1981 Regents of the University of California.
      3  * 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[] = "from: @(#)scanw.c	5.10 (Berkeley) 8/31/92";*/
     36 static char rcsid[] = "$Id: scanw.c,v 1.3 1993/08/07 05:49:05 mycroft Exp $";
     37 #endif	/* not lint */
     38 
     39 /*
     40  * scanw and friends.
     41  */
     42 
     43 #include <curses.h>
     44 
     45 #if __STDC__
     46 #include <stdarg.h>
     47 #else
     48 #include <varargs.h>
     49 #endif
     50 
     51 static int __sscans __P((WINDOW *, const char *, va_list));
     52 
     53 /*
     54  * scanw --
     55  *	Implement a scanf on the standard screen.
     56  */
     57 int
     58 #if __STDC__
     59 scanw(const char *fmt, ...)
     60 #else
     61 scanw(fmt, va_alist)
     62 	char *fmt;
     63 	va_dcl
     64 #endif
     65 {
     66 	va_list ap;
     67 	int ret;
     68 
     69 #if __STDC__
     70 	va_start(ap, fmt);
     71 #else
     72 	va_start(ap);
     73 #endif
     74 	ret = __sscans(stdscr, fmt, ap);
     75 	va_end(ap);
     76 	return (ret);
     77 }
     78 
     79 /*
     80  * wscanw --
     81  *	Implements a scanf on the given window.
     82  */
     83 int
     84 #if __STDC__
     85 wscanw(WINDOW *win, const char *fmt, ...)
     86 #else
     87 wscanw(win, fmt, va_alist)
     88 	WINDOW *win;
     89 	char *fmt;
     90 	va_dcl
     91 #endif
     92 {
     93 	va_list ap;
     94 	int ret;
     95 
     96 #if __STDC__
     97 	va_start(ap, fmt);
     98 #else
     99 	va_start(ap);
    100 #endif
    101 	ret = __sscans(win, fmt, ap);
    102 	va_end(ap);
    103 	return (ret);
    104 }
    105 
    106 /*
    107  * mvscanw, mvwscanw --
    108  *	Implement the mvscanw commands.  Due to the variable number of
    109  *	arguments, they cannot be macros.  Another sigh....
    110  */
    111 int
    112 #if __STDC__
    113 mvscanw(register int y, register int x, const char *fmt,...)
    114 #else
    115 mvscanw(y, x, fmt, va_alist)
    116 	register int y, x;
    117 	char *fmt;
    118 	va_dcl
    119 #endif
    120 {
    121 	va_list ap;
    122 	int ret;
    123 
    124 	if (move(y, x) != OK)
    125 		return (ERR);
    126 #if __STDC__
    127 	va_start(ap, fmt);
    128 #else
    129 	va_start(ap);
    130 #endif
    131 	ret = __sscans(stdscr, fmt, ap);
    132 	va_end(ap);
    133 	return (ret);
    134 }
    135 
    136 int
    137 #if __STDC__
    138 mvwscanw(register WINDOW * win, register int y, register int x,
    139     const char *fmt, ...)
    140 #else
    141 mvwscanw(win, y, x, fmt, va_alist)
    142 	register WINDOW *win;
    143 	register int y, x;
    144 	char *fmt;
    145 	va_dcl
    146 #endif
    147 {
    148 	va_list ap;
    149 	int ret;
    150 
    151 	if (move(y, x) != OK)
    152 		return (ERR);
    153 #if __STDC__
    154 	va_start(ap, fmt);
    155 #else
    156 	va_start(ap);
    157 #endif
    158 	ret = __sscans(win, fmt, ap);
    159 	va_end(ap);
    160 	return (ret);
    161 }
    162 
    163 /*
    164  * __sscans --
    165  *	This routine actually executes the scanf from the window.
    166  *	THIS SHOULD BE RENAMED vwscanw AND EXPORTED
    167  */
    168 static int
    169 __sscans(win, fmt, ap)
    170 	WINDOW *win;
    171 	const char *fmt;
    172 	va_list ap;
    173 {
    174 
    175 	char buf[1024];
    176 
    177 	return (wgetstr(win, buf) == OK ? vsscanf(buf, fmt, ap) : ERR);
    178 }
    179