1 /**************************************************************************** 2 * Copyright (c) 2012,2013 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 #include <curses.priv.h> 30 31 #if USE_WIDEC_SUPPORT 32 33 MODULE_ID("$Id: widechars.c,v 1.5 2013/03/02 18:55:51 tom Exp $") 34 35 #if defined(__MINGW32__) 36 /* 37 * MinGW has wide-character functions, but they do not work correctly. 38 */ 39 40 int 41 _nc_mbtowc(wchar_t *pwc, const char *s, size_t n) 42 { 43 int result; 44 int count; 45 int try; 46 47 if (s != 0 && n != 0) { 48 /* 49 * MultiByteToWideChar() can decide to return more than one 50 * wide-character. We want only one. Ignore any trailing null, both 51 * in the initial count and in the conversion. 52 */ 53 count = 0; 54 for (try = 1; try <= (int) n; ++try) { 55 count = MultiByteToWideChar(CP_UTF8, 56 MB_ERR_INVALID_CHARS, 57 s, 58 try, 59 pwc, 60 0); 61 TR(TRACE_BITS, ("...try %d:%d", try, count)); 62 if (count > 0) { 63 break; 64 } 65 } 66 if (count < 1 || count > 2) { 67 result = -1; 68 } else { 69 wchar_t actual[2]; 70 memset(&actual, 0, sizeof(actual)); 71 count = MultiByteToWideChar(CP_UTF8, 72 MB_ERR_INVALID_CHARS, 73 s, 74 try, 75 actual, 76 2); 77 TR(TRACE_BITS, ("\twin32 ->%#x, %#x", actual[0], actual[1])); 78 *pwc = actual[0]; 79 if (actual[1] != 0) 80 result = -1; 81 else 82 result = try; 83 } 84 } else { 85 result = 0; 86 } 87 88 return result; 89 } 90 91 int 92 _nc_mblen(const char *s, size_t n) 93 { 94 int result = -1; 95 int count; 96 wchar_t temp; 97 98 if (s != 0 && n != 0) { 99 count = _nc_mbtowc(&temp, s, n); 100 if (count == 1) { 101 int check = WideCharToMultiByte(CP_UTF8, 102 0, 103 &temp, 104 1, 105 NULL, 106 0, /* compute length only */ 107 NULL, 108 NULL); 109 TR(TRACE_BITS, ("\tcheck ->%d\n", check)); 110 if (check > 0 && (size_t) check <= n) { 111 result = check; 112 } 113 } 114 } else { 115 result = 0; 116 } 117 118 return result; 119 } 120 121 int __MINGW_NOTHROW 122 _nc_wctomb(char *s, wchar_t wc) 123 { 124 int result; 125 int check; 126 127 check = WideCharToMultiByte(CP_UTF8, 128 0, 129 &wc, 130 1, 131 NULL, 132 0, /* compute length only */ 133 NULL, 134 NULL); 135 if (check > 0) { 136 result = WideCharToMultiByte(CP_UTF8, 137 0, 138 &wc, 139 1, 140 s, 141 check + 1, 142 NULL, 143 NULL); 144 } else { 145 result = -1; 146 } 147 return result; 148 } 149 150 #endif /* __MINGW32__ */ 151 152 #endif /* USE_WIDEC_SUPPORT */ 153