1 /* $OpenBSD: lib_cchar.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 2001-2005,2007 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /* 32 ** lib_cchar.c 33 ** 34 ** The routines setcchar() and getcchar(). 35 ** 36 */ 37 38 #include <curses.priv.h> 39 40 MODULE_ID("$Id: lib_cchar.c,v 1.1 2010/09/06 17:26:17 nicm Exp $") 41 42 /* 43 * The SuSv2 description leaves some room for interpretation. We'll assume wch 44 * points to a string which is L'\0' terminated, contains at least one 45 * character with strictly positive width, which must be the first, and 46 * contains no characters of negative width. 47 */ 48 NCURSES_EXPORT(int) 49 setcchar(cchar_t *wcval, 50 const wchar_t *wch, 51 const attr_t attrs, 52 short color_pair, 53 const void *opts) 54 { 55 int i; 56 int len; 57 int code = OK; 58 59 TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%lu,%d,%p)"), 60 wcval, _nc_viswbuf(wch), 61 (unsigned long) attrs, color_pair, opts)); 62 63 len = wcslen(wch); 64 if (opts != NULL 65 || (len > 1 && wcwidth(wch[0]) < 0)) { 66 code = ERR; 67 } else { 68 if (len > CCHARW_MAX) 69 len = CCHARW_MAX; 70 71 /* 72 * If we have a following spacing-character, stop at that point. We 73 * are only interested in adding non-spacing characters. 74 */ 75 for (i = 1; i < len; ++i) { 76 if (wcwidth(wch[i]) != 0) { 77 len = i; 78 break; 79 } 80 } 81 82 memset(wcval, 0, sizeof(*wcval)); 83 84 if (len != 0) { 85 SetAttr(*wcval, attrs | COLOR_PAIR(color_pair)); 86 SetPair(CHDEREF(wcval), color_pair); 87 memcpy(&wcval->chars, wch, len * sizeof(wchar_t)); 88 TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len, 89 _tracecchar_t(wcval))); 90 } 91 } 92 93 TR(TRACE_CCALLS, (T_RETURN("%d"), code)); 94 return (code); 95 } 96 97 NCURSES_EXPORT(int) 98 getcchar(const cchar_t *wcval, 99 wchar_t *wch, 100 attr_t *attrs, 101 short *color_pair, 102 void *opts) 103 { 104 wchar_t *wp; 105 int len; 106 int code = ERR; 107 108 TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"), 109 wcval, wch, attrs, color_pair, opts)); 110 111 if (opts == NULL) { 112 len = (wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX)) 113 ? wp - wcval->chars 114 : CCHARW_MAX; 115 116 if (wch == NULL) { 117 code = len; 118 } else if (attrs == 0 || color_pair == 0) { 119 code = ERR; 120 } else if (len >= 0) { 121 *attrs = AttrOf(*wcval) & A_ATTRIBUTES; 122 *color_pair = GetPair(*wcval); 123 wmemcpy(wch, wcval->chars, (unsigned) len); 124 wch[len] = L'\0'; 125 code = OK; 126 } 127 } 128 129 TR(TRACE_CCALLS, (T_RETURN("%d"), code)); 130 return (code); 131 } 132