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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [iconv/] [ces/] [ucs-2.c] - Rev 148
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/* * Copyright (c) 2003-2004, Artem B. Bityuckiy * Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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 "cesbi.h" #if defined (ICONV_TO_UCS_CES_UCS_2) \ || defined (ICONV_FROM_UCS_CES_UCS_2) #include <_ansi.h> #include <reent.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include "../lib/local.h" #include "../lib/ucsconv.h" #include "../lib/endian.h" /* * BOM isn't supported. UCS-2 is Big Endian. Bad codes are rejected. * Bad codes: 0xFFFF, 0xFFFE, 0xD800-0xDFFF. */ #define UCS_2_BIG_ENDIAN 0 #define UCS_2_LITTLE_ENDIAN 1 #define UCS_2 "ucs_2" #define UCS_2BE "ucs_2be" #define UCS_2LE "ucs_2le" static _VOID_PTR _DEFUN(ucs_2_init, (rptr, encoding), struct _reent *rptr _AND _CONST char *encoding) { int *data; if ((data = (int *) _malloc_r(rptr, sizeof (int))) == NULL) return (_VOID_PTR)NULL; if (strcmp (encoding, UCS_2LE) == 0) *data = UCS_2_LITTLE_ENDIAN; else *data = UCS_2_BIG_ENDIAN; return (_VOID_PTR)data; } static size_t _DEFUN(ucs_2_close, (rptr, data), struct _reent *rptr _AND _VOID_PTR data) { _free_r (rptr, data); return 0; } #if defined (ICONV_FROM_UCS_CES_UCS_2) static size_t _DEFUN(ucs_2_convert_from_ucs, (data, in, outbuf, outbytesleft), _VOID_PTR data _AND ucs4_t in _AND unsigned char **outbuf _AND size_t *outbytesleft) { if ((in >= 0x0000D800 && in <= 0x0000DFFF) /* Surrogate character */ || in >= 0x0000FFFE) return (size_t)ICONV_CES_INVALID_CHARACTER; if (*outbytesleft < sizeof (ucs2_t)) return (size_t)ICONV_CES_NOSPACE; if (*((int *)data) == UCS_2_BIG_ENDIAN) *((ucs2_t *)(*outbuf)) = ICONV_HTOBES ((ucs2_t)in); else *((ucs2_t *)(*outbuf)) = ICONV_HTOLES ((ucs2_t)in); *outbuf += sizeof (ucs2_t); *outbytesleft -= sizeof (ucs2_t); return sizeof (ucs2_t); } #endif /* ICONV_FROM_UCS_CES_UCS_2 */ #if defined (ICONV_TO_UCS_CES_UCS_2) static ucs4_t _DEFUN(ucs_2_convert_to_ucs, (data, inbuf, inbytesleft), _VOID_PTR data _AND _CONST unsigned char **inbuf _AND size_t *inbytesleft) { ucs4_t res; if (*inbytesleft < sizeof (ucs2_t)) return (ucs4_t)ICONV_CES_BAD_SEQUENCE; if (*((int *)data) == UCS_2_BIG_ENDIAN) res = (ucs4_t)ICONV_BETOHS (*((ucs2_t *)(*inbuf))); else res = (ucs4_t)ICONV_LETOHS (*((ucs2_t *)(*inbuf))); if ((res >= 0x0000D800 && res <= 0x0000DFFF) /* Surrogate character */ || res >= 0x0000FFFE) return (ucs4_t)ICONV_CES_INVALID_CHARACTER; *inbytesleft -= sizeof (ucs2_t); *inbuf += sizeof (ucs2_t); return res; } #endif /* ICONV_TO_UCS_CES_UCS_2 */ static int _DEFUN(ucs_2_get_mb_cur_max, (data), _VOID_PTR data) { return 2; } #if defined (ICONV_TO_UCS_CES_UCS_2) _CONST iconv_to_ucs_ces_handlers_t _iconv_to_ucs_ces_handlers_ucs_2 = { ucs_2_init, ucs_2_close, ucs_2_get_mb_cur_max, NULL, NULL, NULL, ucs_2_convert_to_ucs }; #endif #if defined (ICONV_FROM_UCS_CES_UCS_2) _CONST iconv_from_ucs_ces_handlers_t _iconv_from_ucs_ces_handlers_ucs_2 = { ucs_2_init, ucs_2_close, ucs_2_get_mb_cur_max, NULL, NULL, NULL, ucs_2_convert_from_ucs }; #endif #endif /* ICONV_TO_UCS_CES_UCS_2 || ICONV_FROM_UCS_CES_UCS_2 */
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