| 0,0 → 1,166 |
|---|
| /* Routine to translate from Japanese characters to Unicode */ |
| |
| /* Copyright (c) 2002 Red Hat Incorporated. |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| The name of Red Hat Incorporated may not be used to endorse |
| or promote products derived from this software without specific |
| prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <newlib.h> |
| |
| #ifdef _MB_CAPABLE |
| /* Under Cygwin, the incoming wide character is already given in UTF due |
| to the requirements of the underlying OS. */ |
| #ifndef __CYGWIN__ |
| |
| #include <_ansi.h> |
| #include <wctype.h> |
| #include "local.h" |
| #include "jp2uc.h" |
| |
| /* Japanese encoding types supported */ |
| #define JP_JIS 1 |
| #define JP_SJIS 2 |
| #define JP_EUCJP 3 |
| |
| static wint_t |
| _DEFUN (__jp2uc, (c, type), wint_t c _AND int type) |
| { |
| int index, adj; |
| unsigned char byte1, byte2; |
| wint_t ret; |
| |
| /* we actually use tables of EUCJP to Unicode. For JIS, we simply |
| note that EUCJP is essentially JIS with the top bits on in each |
| byte and translate to EUCJP. For SJIS, we do a translation to EUCJP before |
| accessing the tables. */ |
| switch (type) |
| { |
| case JP_JIS: |
| byte1 = (c >> 8) + 0x80; |
| byte2 = (c & 0xff) + 0x80; |
| break; |
| case JP_EUCJP: |
| byte1 = (c >> 8); |
| byte2 = (c & 0xff); |
| break; |
| case JP_SJIS: |
| byte1 = c >> 8; |
| byte2 = c & 0xff; |
| if (byte2 <= 0x9e) |
| { |
| adj = 0xa1 - 0x22; |
| byte2 = (byte2 - 31) + 0xa1; |
| } |
| else |
| { |
| adj = 0xa1 - 0x21; |
| byte2 = (byte2 - 126) + 0xa1; |
| } |
| if (byte1 <= 0x9f) |
| byte1 = ((byte1 - 112) << 1) + adj; |
| else |
| byte1 = ((byte1 - 176) << 1) + adj; |
| break; |
| default: |
| return WEOF; |
| } |
| |
| /* find conversion in jp2uc arrays */ |
| |
| /* handle larger ranges first */ |
| if (byte1 >= 0xb0 && byte1 <= 0xcf && c <= 0xcfd3) |
| { |
| index = (byte1 - 0xb0) * 0xfe + (byte2 - 0xa1); |
| return b02cf[index]; |
| } |
| else if (byte1 >= 0xd0 && byte1 <= 0xf4 && c <= 0xf4a6) |
| { |
| index = (byte1 - 0xd0) * 0xfe + (byte2 - 0xa1); |
| return d02f4[index]; |
| } |
| |
| /* handle smaller ranges here */ |
| switch (byte1) |
| { |
| case 0xA1: |
| return (wint_t)a1[byte2 - 0xa1]; |
| case 0xA2: |
| ret = a2[byte2 - 0xa1]; |
| if (ret != 0) |
| return (wint_t)ret; |
| break; |
| case 0xA3: |
| if (a3[byte2 - 0xa1]) |
| return (wint_t)(0xff00 + (byte2 - 0xa0)); |
| break; |
| case 0xA4: |
| if (byte2 <= 0xf3) |
| return (wint_t)(0x3000 + (byte2 - 0x60)); |
| break; |
| case 0xA5: |
| if (byte2 <= 0xf6) |
| return (wint_t)(0x3000 + byte2); |
| break; |
| case 0xA6: |
| ret = 0; |
| if (byte2 <= 0xd8) |
| ret = (wint_t)a6[byte2 - 0xa1]; |
| if (ret != 0) |
| return ret; |
| break; |
| case 0xA7: |
| ret = 0; |
| if (byte2 <= 0xf1) |
| ret = (wint_t)a7[byte2 - 0xa1]; |
| if (ret != 0) |
| return ret; |
| break; |
| case 0xA8: |
| if (byte2 <= 0xc0) |
| return (wint_t)a8[byte2 - 0xa1]; |
| break; |
| default: |
| return WEOF; |
| } |
| |
| return WEOF; |
| } |
| |
| wint_t |
| _DEFUN (_jp2uc, (c), wint_t c) |
| { |
| if (!strcmp (__locale_charset (), "JIS")) |
| c = __jp2uc (c, JP_JIS); |
| else if (!strcmp (__locale_charset (), "SJIS")) |
| c = __jp2uc (c, JP_SJIS); |
| else if (!strcmp (__locale_charset (), "EUCJP")) |
| c = __jp2uc (c, JP_EUCJP); |
| return c; |
| } |
| |
| #endif /* !__CYGWIN__ */ |
| #endif /* _MB_CAPABLE */ |