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addnstr.c revision 1.12 
      1 /*	$NetBSD: addnstr.c,v 1.12 2007/05/28 15:01:54 blymn Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     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  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)addnstr.c	8.2 (Berkeley) 5/4/94";
     36 #else
     37 __RCSID("$NetBSD: addnstr.c,v 1.12 2007/05/28 15:01:54 blymn Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include <string.h>
     42 
     43 #include "curses.h"
     44 #include "curses_private.h"
     45 
     46 #ifndef _CURSES_USE_MACROS
     47 
     48 /*
     49  * addstr --
     50  *      Add a string to stdscr starting at (_cury, _curx).
     51  */
     52 int
     53 addstr(const char *s)
     54 {
     55 	return waddnstr(stdscr, s, -1);
     56 }
     57 
     58 /*
     59  * waddstr --
     60  *      Add a string to the given window starting at (_cury, _curx).
     61  */
     62 int
     63 waddstr(WINDOW *win, const char *s)
     64 {
     65 	return waddnstr(win, s, -1);
     66 }
     67 
     68 /*
     69  * addnstr --
     70  *      Add a string (at most n characters) to stdscr starting
     71  *	at (_cury, _curx).  If n is negative, add the entire string.
     72  */
     73 int
     74 addnstr(const char *str, int n)
     75 {
     76 	return waddnstr(stdscr, str, n);
     77 }
     78 
     79 /*
     80  * mvaddstr --
     81  *      Add a string to stdscr starting at (y, x)
     82  */
     83 int
     84 mvaddstr(int y, int x, const char *str)
     85 {
     86 	return mvwaddnstr(stdscr, y, x, str, -1);
     87 }
     88 
     89 /*
     90  * mvwaddstr --
     91  *      Add a string to the given window starting at (y, x)
     92  */
     93 int
     94 mvwaddstr(WINDOW *win, int y, int x, const char *str)
     95 {
     96 	return mvwaddnstr(win, y, x, str, -1);
     97 }
     98 
     99 /*
    100  * mvaddnstr --
    101  *      Add a string of at most n characters to stdscr
    102  *      starting at (y, x).
    103  */
    104 int
    105 mvaddnstr(int y, int x, const char *str, int count)
    106 {
    107 	return mvwaddnstr(stdscr, y, x, str, count);
    108 }
    109 
    110 /*
    111  * mvwaddnstr --
    112  *      Add a string of at most n characters to the given window
    113  *      starting at (y, x).
    114  */
    115 int
    116 mvwaddnstr(WINDOW *win, int y, int x, const char *str, int count)
    117 {
    118 	if (wmove(win, y, x) == ERR)
    119 		return ERR;
    120 
    121 	return waddnstr(win, str, count);
    122 }
    123 
    124 #endif
    125 
    126 /*
    127  * waddnstr --
    128  *	Add a string (at most n characters) to the given window
    129  *	starting at (_cury, _curx).  If n is negative, add the
    130  *	entire string.
    131  */
    132 int
    133 waddnstr(WINDOW *win, const char *s, int n)
    134 {
    135 	size_t  len;
    136 	const char *p;
    137 
    138 #ifdef DEBUG
    139 		__CTRACE(__CTRACE_INPUT, "ADDNSTR: win %p, length %d\n",
    140 			 win, n);
    141 #endif
    142 	/*
    143 	 * behavior changed from traditional BSD curses, for better XCURSES
    144 	 * conformance.
    145 	 *
    146 	 * BSD curses: if (n > 0) then "at most n", else "len = strlen(s)"
    147 	 * ncurses: if (n >= 0) then "at most n", else "len = strlen(s)"
    148 	 * XCURSES: if (n != -1) then "at most n", else "len = strlen(s)"
    149 	 */
    150 	if (n >= 0)
    151 		for (p = s, len = 0; n-- && *p++; ++len);
    152 	else
    153 		len = strlen(s);
    154 	return (waddbytes(win, s, (int) len));
    155 }
    156