lib/libcurses/addwstr.c

   1 /*   $NetBSD: addwstr.c,v 1.2 2007/05/28 15:01:54 blymn Exp $ */
   2
   3 /*
   4  * Copyright (c) 2005 The NetBSD Foundation Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from code donated to the NetBSD Foundation
   8  * by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
   9  *
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *      notice, this list of conditions and the following disclaimer in the
  18  *      documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the NetBSD Foundation nor the names of its
  20  *      contributors may be used to endorse or promote products derived
  21  *      from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  24  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  25  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 __RCSID("$NetBSD: addwstr.c,v 1.2 2007/05/28 15:01:54 blymn Exp $");
  40 #endif                                            /* not lint */
  41
  42 #include <string.h>
  43
  44 #include "curses.h"
  45 #include "curses_private.h"
  46
  47 /*
  48  * addwstr --
  49  *        Add a string to stdscr starting at (_cury, _curx).
  50  */
  51 int
  52 addwstr(const wchar_t *s)
  53 {
  54 #ifndef HAVE_WCHAR
  55         return ERR;
  56 #else
  57         return waddnwstr(stdscr, s, -1);
  58 #endif /* HAVE_WCHAR */
  59 }
  60
  61 /*
  62  * waddwstr --
  63  *        Add a string to the given window starting at (_cury, _curx).
  64  */
  65 int
  66 waddwstr(WINDOW *win, const wchar_t *s)
  67 {
  68 #ifndef HAVE_WCHAR
  69         return ERR;
  70 #else
  71         return waddnwstr(win, s, -1);
  72 #endif /* HAVE_WCHAR */
  73 }
  74
  75 /*
  76  * addnwstr --
  77  *        Add a string (at most n characters) to stdscr starting
  78  *      at (_cury, _curx).  If n is negative, add the entire string.
  79  */
  80 int
  81 addnwstr(const wchar_t *str, int n)
  82 {
  83 #ifndef HAVE_WCHAR
  84         return ERR;
  85 #else
  86         return waddnwstr(stdscr, str, n);
  87 #endif /* HAVE_WCHAR */
  88 }
  89
  90 /*
  91  * mvaddwstr --
  92  *        Add a string to stdscr starting at (y, x)
  93  */
  94 int
  95 mvaddwstr(int y, int x, const wchar_t *str)
  96 {
  97 #ifndef HAVE_WCHAR
  98         return ERR;
  99 #else
 100         return mvwaddnwstr(stdscr, y, x, str, -1);
 101 #endif /* HAVE_WCHAR */
 102 }
 103
 104 /*
 105  * mvwaddwstr --
 106  *        Add a string to the given window starting at (y, x)
 107  */
 108 int
 109 mvwaddwstr(WINDOW *win, int y, int x, const wchar_t *str)
 110 {
 111 #ifndef HAVE_WCHAR
 112         return ERR;
 113 #else
 114         return mvwaddnwstr(win, y, x, str, -1);
 115 #endif /* HAVE_WCHAR */
 116 }
 117
 118 /*
 119  * mvaddnwstr --
 120  *        Add a string of at most n characters to stdscr
 121  *        starting at (y, x).
 122  */
 123 int
 124 mvaddnwstr(int y, int x, const wchar_t *str, int count)
 125 {
 126 #ifndef HAVE_WCHAR
 127         return ERR;
 128 #else
 129         return mvwaddnwstr(stdscr, y, x, str, count);
 130 #endif /* HAVE_WCHAR */
 131 }
 132
 133 /*
 134  * mvwaddnwstr --
 135  *        Add a string of at most n characters to the given window
 136  *        starting at (y, x).
 137  */
 138 int
 139 mvwaddnwstr(WINDOW *win, int y, int x, const wchar_t *str, int count)
 140 {
 141 #ifndef HAVE_WCHAR
 142         return ERR;
 143 #else
 144         if (wmove(win, y, x) == ERR)
 145                 return ERR;
 146
 147         return waddnwstr(win, str, count);
 148 #endif /* HAVE_WCHAR */
 149 }
 150
 151 /*
 152  * waddnwstr --
 153  *      Add a string (at most n characters) to the given window
 154  *      starting at (_cury, _curx).  If n is negative, add the
 155  *      entire string.
 156  */
 157 int
 158 waddnwstr(WINDOW *win, const wchar_t *s, int n)
 159 {
 160 #ifndef HAVE_WCHAR
 161         return ERR;
 162 #else
 163         size_t  len;
 164         const wchar_t *p;
 165         cchar_t cc;
 166         wchar_t wc[ 2 ];
 167
 168         /*
 169          * BSD curses: if (n > 0) then "at most n", else "len = strlen(s)"
 170          * ncurses: if (n >= 0) then "at most n", else "len = strlen(s)"
 171          * XCURSES: if (n != -1) then "at most n", else "len = strlen(s)"
 172          */
 173         /* compute the length and column width of string */
 174         if ( n < -1 )
 175                 return ERR;
 176         if (n >= 0)
 177                 for (p = s, len = 0; n-- && *p++; ++len );
 178         else
 179                 len = wcslen(s);
 180 #ifdef DEBUG
 181         __CTRACE(__CTRACE_INPUT, "waddnwstr: string len=%ld\n", (long) len);
 182 #endif /* DEBUG */
 183
 184         p = s;
 185         while ( len ) {
 186                 wc[ 0 ] = *p;
 187                 wc[ 1 ] = L'\0';
 188                 if ( setcchar( &cc, wc, win->wattr, 0, NULL ) == ERR )
 189                         return ERR;
 190                 if ( wadd_wch( win, &cc ) == ERR )
 191                         return ERR;
 192 #ifdef DEBUG
 193                 __CTRACE(__CTRACE_INPUT, "waddnwstr: (%x,%x,%d) added\n",
 194                                 cc.vals[ 0 ], cc.attributes, cc.elements );
 195 #endif /* DEBUG */
 196                 p++, len--;
 197         }
 198
 199         return OK;
 200 #endif /* HAVE_WCHAR */
 201 }