lib/libcurses/addchnstr.c

   1 /*      $NetBSD: addchnstr.c,v 1.4 2008/04/28 20:23:01 martin Exp $     */
   2
   3 /*
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Douwe Kiela (virtus@wanadoo.nl).
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __RCSID("$NetBSD: addchnstr.c,v 1.4 2008/04/28 20:23:01 martin Exp $");
  35 #endif                          /* not lint */
  36
  37 #include <stdlib.h>
  38
  39 #include "curses.h"
  40 #include "curses_private.h"
  41
  42 #ifndef _CURSES_USE_MACROS
  43
  44 /*
  45  * addchstr --
  46  *      Add a string to stdscr starting at (_cury, _curx).
  47  */
  48 int
  49 addchstr(const chtype *chstr)
  50 {
  51         return waddchnstr(stdscr, chstr, -1);
  52 }
  53
  54 /*
  55  * waddchstr --
  56  *      Add a string to the given window starting at (_cury, _curx).
  57  */
  58 int
  59 waddchstr(WINDOW *win, const chtype *chstr)
  60 {
  61         return waddchnstr(win, chstr, -1);
  62 }
  63
  64 /*
  65  * addchnstr --
  66  *      Add a string (at most n characters) to stdscr starting
  67  *      at (_cury, _curx).  If n is negative, add the entire string.
  68  */
  69 int
  70 addchnstr(const chtype *chstr, int n)
  71 {
  72         return waddchnstr(stdscr, chstr, n);
  73 }
  74
  75 /*
  76  * mvaddchstr --
  77  *      Add a string to stdscr starting at (y, x)
  78  */
  79 int
  80 mvaddchstr(int y, int x, const chtype *chstr)
  81 {
  82         return mvwaddchnstr(stdscr, y, x, chstr, -1);
  83 }
  84
  85 /*
  86  * mvwaddchstr --
  87  *      Add a string to the given window starting at (y, x)
  88  */
  89 int
  90 mvwaddchstr(WINDOW *win, int y, int x, const chtype *chstr)
  91 {
  92         return mvwaddchnstr(win, y, x, chstr, -1);
  93 }
  94
  95 /*
  96  * mvaddchnstr --
  97  *      Add a string of at most n characters to stdscr
  98  *      starting at (y, x).
  99  */
 100 int
 101 mvaddchnstr(int y, int x, const chtype *chstr, int n)
 102 {
 103         return mvwaddchnstr(stdscr, y, x, chstr, n);
 104 }
 105
 106 /*
 107  * mvwaddchnstr --
 108  *      Add a string of at most n characters to the given window
 109  *      starting at (y, x).
 110  */
 111 int
 112 mvwaddchnstr(WINDOW *win, int y, int x, const chtype *chstr, int n)
 113 {
 114         if (wmove(win, y, x) == ERR)
 115                 return ERR;
 116
 117         return waddchnstr(win, chstr, n);
 118 }
 119
 120 #endif
 121
 122 /*
 123  * waddchnstr --
 124  *      Add a string (at most n characters) to the given window
 125  *      starting at (_cury, _curx).  If n is negative, add the
 126  *      entire string.
 127  */
 128 int
 129 waddchnstr(WINDOW *win, const chtype *chstr, int n)
 130 {
 131         size_t  len;
 132         const chtype *chp;
 133         attr_t  attr;
 134         char    *ocp, *cp, *start;
 135         int i, ret;
 136
 137 #ifdef DEBUG
 138         __CTRACE(__CTRACE_INPUT, "waddchnstr: win = %p, chstr = %p, n = %d\n",
 139             win, chstr, n);
 140 #endif
 141
 142         if (n >= 0)
 143                 for (chp = chstr, len = 0; n-- && *chp++; ++len);
 144         else
 145                 for (chp = chstr, len = 0; *chp++; ++len);
 146
 147         if ((ocp = malloc(len + 1)) == NULL)
 148                 return ERR;
 149         chp = chstr;
 150         cp = ocp;
 151         start = ocp;
 152         i = 0;
 153         attr = (*chp) & __ATTRIBUTES;
 154         while (len) {
 155                 *cp = (*chp) & __CHARTEXT;
 156                 cp++;
 157                 chp++;
 158                 i++;
 159                 len--;
 160                 if (((*chp) & __ATTRIBUTES) != attr) {
 161                         *cp = '\0';
 162                         if (__waddbytes(win, start, i, attr) == ERR) {
 163                                 free(ocp);
 164                                 return ERR;
 165                         }
 166                         attr = (*chp) & __ATTRIBUTES;
 167                         start = cp;
 168                         i = 0;
 169                 }
 170         }
 171         *cp = '\0';
 172         ret = __waddbytes(win, start, i, attr);
 173         free(ocp);
 174         return ret;
 175 }