Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame^] | 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 */ |