diff options
Diffstat (limited to 'ncurses/widechar/widechars.c')
| -rw-r--r-- | ncurses/widechar/widechars.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/ncurses/widechar/widechars.c b/ncurses/widechar/widechars.c new file mode 100644 index 000000000000..6951e2863fa0 --- /dev/null +++ b/ncurses/widechar/widechars.c @@ -0,0 +1,152 @@ +/**************************************************************************** + * Copyright (c) 2012,2013 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +#include <curses.priv.h> + +#if USE_WIDEC_SUPPORT + +MODULE_ID("$Id: widechars.c,v 1.5 2013/03/02 18:55:51 tom Exp $") + +#if defined(__MINGW32__) +/* + * MinGW has wide-character functions, but they do not work correctly. + */ + +int +_nc_mbtowc(wchar_t *pwc, const char *s, size_t n) +{ + int result; + int count; + int try; + + if (s != 0 && n != 0) { + /* + * MultiByteToWideChar() can decide to return more than one + * wide-character. We want only one. Ignore any trailing null, both + * in the initial count and in the conversion. + */ + count = 0; + for (try = 1; try <= (int) n; ++try) { + count = MultiByteToWideChar(CP_UTF8, + MB_ERR_INVALID_CHARS, + s, + try, + pwc, + 0); + TR(TRACE_BITS, ("...try %d:%d", try, count)); + if (count > 0) { + break; + } + } + if (count < 1 || count > 2) { + result = -1; + } else { + wchar_t actual[2]; + memset(&actual, 0, sizeof(actual)); + count = MultiByteToWideChar(CP_UTF8, + MB_ERR_INVALID_CHARS, + s, + try, + actual, + 2); + TR(TRACE_BITS, ("\twin32 ->%#x, %#x", actual[0], actual[1])); + *pwc = actual[0]; + if (actual[1] != 0) + result = -1; + else + result = try; + } + } else { + result = 0; + } + + return result; +} + +int +_nc_mblen(const char *s, size_t n) +{ + int result = -1; + int count; + wchar_t temp; + + if (s != 0 && n != 0) { + count = _nc_mbtowc(&temp, s, n); + if (count == 1) { + int check = WideCharToMultiByte(CP_UTF8, + 0, + &temp, + 1, + NULL, + 0, /* compute length only */ + NULL, + NULL); + TR(TRACE_BITS, ("\tcheck ->%d\n", check)); + if (check > 0 && (size_t) check <= n) { + result = check; + } + } + } else { + result = 0; + } + + return result; +} + +int __MINGW_NOTHROW +_nc_wctomb(char *s, wchar_t wc) +{ + int result; + int check; + + check = WideCharToMultiByte(CP_UTF8, + 0, + &wc, + 1, + NULL, + 0, /* compute length only */ + NULL, + NULL); + if (check > 0) { + result = WideCharToMultiByte(CP_UTF8, + 0, + &wc, + 1, + s, + check + 1, + NULL, + NULL); + } else { + result = -1; + } + return result; +} + +#endif /* __MINGW32__ */ + +#endif /* USE_WIDEC_SUPPORT */ |