4a069c3345
* iconv/gconv_simple.c: Define separate functions to convert from UCS4/UCS4-LE to the internal encoding. * iconv/gconv_builtin.h: Use separate functions to convert from UCS4/UCS4-LE to the internal encoding. * iconv/gconv_int.h: Declare __gconv_transform_ucs4_internal and __gconv_transform_ucs4le_internal. * iconv/gconv_simple.c (internal_utf8_loop): Correct check for output buffer overflow. Reported by Ulrich.Brink@sap.com.
1060 lines
29 KiB
C
1060 lines
29 KiB
C
/* Simple transformations functions.
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Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <byteswap.h>
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#include <endian.h>
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#include <errno.h>
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#include <gconv.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <sys/param.h>
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#ifndef EILSEQ
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# define EILSEQ EINVAL
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#endif
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/* These are definitions used by some of the functions for handling
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UTF-8 encoding below. */
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static const uint32_t encoding_mask[] =
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{
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~0x7ff, ~0xffff, ~0x1fffff, ~0x3ffffff
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};
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static const unsigned char encoding_byte[] =
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{
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0xc0, 0xe0, 0xf0, 0xf8, 0xfc
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};
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/* Transform from the internal, UCS4-like format, to UCS4. The
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difference between the internal ucs4 format and the real UCS4
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format is, if any, the endianess. The Unicode/ISO 10646 says that
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unless some higher protocol specifies it differently, the byte
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order is big endian.*/
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP internal_ucs4_loop
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#define TO_LOOP internal_ucs4_loop /* This is not used. */
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#define FUNCTION_NAME __gconv_transform_internal_ucs4
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static inline int
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internal_ucs4_loop (const unsigned char **inptrp, const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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/* Sigh, we have to do some real work. */
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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*((uint32_t *) outptr)++ = bswap_32 (*(uint32_t *) inptr);
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*inptrp = inptr;
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*outptrp = outptr;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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/* Simply copy the data. */
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*inptrp = inptr + n_convert * 4;
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*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
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#else
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# error "This endianess is not supported."
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#endif
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/* Determine the status. */
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if (*outptrp == outend)
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result = __GCONV_FULL_OUTPUT;
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else if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#ifndef _STRING_ARCH_unaligned
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static inline int
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internal_ucs4_loop_unaligned (const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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/* Sigh, we have to do some real work. */
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4, outptr += 4)
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{
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outptr[0] = inptr[3];
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outptr[1] = inptr[2];
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outptr[2] = inptr[1];
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outptr[3] = inptr[0];
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}
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*inptrp = inptr;
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*outptrp = outptr;
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# elif __BYTE_ORDER == __BIG_ENDIAN
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/* Simply copy the data. */
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*inptrp = inptr + n_convert * 4;
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*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
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# else
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# error "This endianess is not supported."
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# endif
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/* Determine the status. */
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if (*outptrp == outend)
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result = __GCONV_FULL_OUTPUT;
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else if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#endif
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static inline int
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internal_ucs4_loop_single (const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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size_t cnt = state->__count & 7;
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while (*inptrp < inend && cnt < 4)
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state->__value.__wchb[cnt++] = *(*inptrp)++;
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if (cnt < 4)
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{
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/* Still not enough bytes. Store the ones in the input buffer. */
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state->__count &= ~7;
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state->__count |= cnt;
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return __GCONV_INCOMPLETE_INPUT;
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}
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[3];
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(*outptrp)[1] = state->__value.__wchb[2];
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(*outptrp)[2] = state->__value.__wchb[1];
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(*outptrp)[3] = state->__value.__wchb[0];
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#elif __BYTE_ORDER == __BIG_ENDIAN
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/* XXX unaligned */
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*(*((uint32_t **) outptrp)++) = state->__value.__wch;
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#else
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# error "This endianess is not supported."
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#endif
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/* Clear the state buffer. */
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state->__count &= ~7;
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return __GCONV_OK;
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}
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#include <iconv/skeleton.c>
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/* Transform from UCS4 to the internal, UCS4-like format. Unlike
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for the other direction we have to check for correct values here. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP ucs4_internal_loop
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#define TO_LOOP ucs4_internal_loop /* This is not used. */
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#define FUNCTION_NAME __gconv_transform_ucs4_internal
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static inline int
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ucs4_internal_loop (const unsigned char **inptrp, const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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{
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uint32_t inval;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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inval = bswap_32 (*(uint32_t *) inptr);
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#else
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inval = *(uint32_t *) inptr;
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#endif
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if (inval > 0x7fffffff)
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{
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*inptrp = inptr;
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*outptrp = outptr;
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return __GCONV_ILLEGAL_INPUT;
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}
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*((uint32_t *) outptr)++ = bswap_32 (*(uint32_t *) inptr);
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}
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*inptrp = inptr;
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*outptrp = outptr;
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/* Determine the status. */
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if (*outptrp == outend)
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result = __GCONV_FULL_OUTPUT;
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else if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#ifndef _STRING_ARCH_unaligned
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static inline int
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ucs4_internal_loop_unaligned (const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4, outptr += 4)
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{
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if (inptr[0] > 0x80)
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{
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/* The value is too large. */
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*inptrp = inptr;
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*outptrp = outptr;
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return __GCONV_ILLEGAL_INPUT;
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}
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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outptr[3] = inptr[0];
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outptr[2] = inptr[1];
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outptr[1] = inptr[2];
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outptr[0] = inptr[3];
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# else
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outptr[0] = inptr[0];
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outptr[1] = inptr[1];
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outptr[2] = inptr[2];
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outptr[3] = inptr[3];
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# endif
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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outptr[3] = inptr[0];
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outptr[2] = inptr[1];
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outptr[1] = inptr[2];
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outptr[0] = inptr[3];
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# else
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outptr[0] = inptr[0];
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outptr[1] = inptr[1];
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outptr[2] = inptr[2];
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outptr[3] = inptr[3];
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# endif
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}
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*inptrp = inptr;
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*outptrp = outptr;
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/* Determine the status. */
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if (*outptrp == outend)
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result = __GCONV_FULL_OUTPUT;
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else if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#endif
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static inline int
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ucs4_internal_loop_single (const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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size_t cnt = state->__count & 7;
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while (*inptrp < inend && cnt < 4)
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state->__value.__wchb[cnt++] = *(*inptrp)++;
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if (cnt < 4)
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{
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/* Still not enough bytes. Store the ones in the input buffer. */
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state->__count &= ~7;
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state->__count |= cnt;
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return __GCONV_INCOMPLETE_INPUT;
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}
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if (((unsigned char *) state->__value.__wchb)[0] > 0x80)
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/* The value is too large. */
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return __GCONV_ILLEGAL_INPUT;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[3];
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(*outptrp)[1] = state->__value.__wchb[2];
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(*outptrp)[2] = state->__value.__wchb[1];
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(*outptrp)[3] = state->__value.__wchb[0];
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#elif __BYTE_ORDER == __BIG_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[0];
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(*outptrp)[1] = state->__value.__wchb[1];
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(*outptrp)[2] = state->__value.__wchb[2];
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(*outptrp)[3] = state->__value.__wchb[3];
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#endif
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/* Clear the state buffer. */
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state->__count &= ~7;
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return __GCONV_OK;
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}
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#include <iconv/skeleton.c>
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/* Similarly for the little endian form. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP internal_ucs4le_loop
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#define TO_LOOP internal_ucs4le_loop /* This is not used. */
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#define FUNCTION_NAME __gconv_transform_internal_ucs4le
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static inline int
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internal_ucs4le_loop (const unsigned char **inptrp, const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data, size_t *converted)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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#if __BYTE_ORDER == __BIG_ENDIAN
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/* Sigh, we have to do some real work. */
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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*((uint32_t *) outptr)++ = bswap_32 (*(uint32_t *) inptr);
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*inptrp = inptr;
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*outptrp = outptr;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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/* Simply copy the data. */
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*inptrp = inptr + n_convert * 4;
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*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
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#else
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# error "This endianess is not supported."
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#endif
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/* Determine the status. */
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if (*outptrp == outend)
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result = __GCONV_FULL_OUTPUT;
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else if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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|
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#ifndef _STRING_ARCH_unaligned
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static inline int
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internal_ucs4le_loop_unaligned (const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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mbstate_t *state, void *data,
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size_t *converted)
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|
{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
/* Sigh, we have to do some real work. */
|
|
size_t cnt;
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|
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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{
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outptr[0] = inptr[3];
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outptr[1] = inptr[2];
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outptr[2] = inptr[1];
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outptr[3] = inptr[0];
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}
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|
|
*inptrp = inptr;
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|
*outptrp = outptr;
|
|
# elif __BYTE_ORDER == __LITTLE_ENDIAN
|
|
/* Simply copy the data. */
|
|
*inptrp = inptr + n_convert * 4;
|
|
*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
|
|
# else
|
|
# error "This endianess is not supported."
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|
# endif
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|
|
|
/* Determine the status. */
|
|
if (*outptrp == outend)
|
|
result = __GCONV_FULL_OUTPUT;
|
|
else if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
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|
else
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|
result = __GCONV_INCOMPLETE_INPUT;
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|
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return result;
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|
}
|
|
#endif
|
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|
|
|
|
static inline int
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internal_ucs4le_loop_single (const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
mbstate_t *state, void *data, size_t *converted)
|
|
{
|
|
size_t cnt = state->__count & 7;
|
|
|
|
while (*inptrp < inend && cnt < 4)
|
|
state->__value.__wchb[cnt++] = *(*inptrp)++;
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|
|
|
if (cnt < 4)
|
|
{
|
|
/* Still not enough bytes. Store the ones in the input buffer. */
|
|
state->__count &= ~7;
|
|
state->__count |= cnt;
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return __GCONV_INCOMPLETE_INPUT;
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}
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|
|
#if __BYTE_ORDER == __BIG_ENDIAN
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|
(*outptrp)[0] = state->__value.__wchb[3];
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(*outptrp)[1] = state->__value.__wchb[2];
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(*outptrp)[2] = state->__value.__wchb[1];
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(*outptrp)[3] = state->__value.__wchb[0];
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#else
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|
/* XXX unaligned */
|
|
*(*((uint32_t **) outptrp)++) = state->__value.__wch;
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|
#endif
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|
|
/* Clear the state buffer. */
|
|
state->__count &= ~7;
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return __GCONV_OK;
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|
}
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|
|
|
#include <iconv/skeleton.c>
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|
|
|
|
|
/* And finally from UCS4-LE to the internal encoding. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ucs4le_internal_loop
|
|
#define TO_LOOP ucs4le_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ucs4le_internal
|
|
|
|
|
|
static inline int
|
|
ucs4le_internal_loop (const unsigned char **inptrp, const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
mbstate_t *state, void *data, size_t *converted)
|
|
{
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
|
|
{
|
|
uint32_t inval;
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
inval = bswap_32 (*(uint32_t *) inptr);
|
|
#else
|
|
inval = *(uint32_t *) inptr;
|
|
#endif
|
|
|
|
if (inval > 0x7fffffff)
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
|
|
*((uint32_t *) outptr)++ = bswap_32 (*(uint32_t *) inptr);
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
|
|
/* Determine the status. */
|
|
if (*outptrp == outend)
|
|
result = __GCONV_FULL_OUTPUT;
|
|
else if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else
|
|
result = __GCONV_INCOMPLETE_INPUT;
|
|
|
|
return result;
|
|
}
|
|
|
|
#ifndef _STRING_ARCH_unaligned
|
|
static inline int
|
|
ucs4le_internal_loop_unaligned (const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
mbstate_t *state, void *data,
|
|
size_t *converted)
|
|
{
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
|
|
{
|
|
if (inptr[3] > 0x80)
|
|
{
|
|
/* The value is too large. */
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
}
|
|
|
|
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
outptr[3] = inptr[0];
|
|
outptr[2] = inptr[1];
|
|
outptr[1] = inptr[2];
|
|
outptr[0] = inptr[3];
|
|
# else
|
|
outptr[0] = inptr[0];
|
|
outptr[1] = inptr[1];
|
|
outptr[2] = inptr[2];
|
|
outptr[3] = inptr[3];
|
|
# endif
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
|
|
/* Determine the status. */
|
|
if (*outptrp == outend)
|
|
result = __GCONV_FULL_OUTPUT;
|
|
else if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else
|
|
result = __GCONV_INCOMPLETE_INPUT;
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
|
|
static inline int
|
|
ucs4le_internal_loop_single (const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
mbstate_t *state, void *data, size_t *converted)
|
|
{
|
|
size_t cnt = state->__count & 7;
|
|
|
|
while (*inptrp < inend && cnt < 4)
|
|
state->__value.__wchb[cnt++] = *(*inptrp)++;
|
|
|
|
if (cnt < 4)
|
|
{
|
|
/* Still not enough bytes. Store the ones in the input buffer. */
|
|
state->__count &= ~7;
|
|
state->__count |= cnt;
|
|
|
|
return __GCONV_INCOMPLETE_INPUT;
|
|
}
|
|
|
|
if (((unsigned char *) state->__value.__wchb)[3] > 0x80)
|
|
/* The value is too large. */
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
(*outptrp)[0] = state->__value.__wchb[3];
|
|
(*outptrp)[1] = state->__value.__wchb[2];
|
|
(*outptrp)[2] = state->__value.__wchb[1];
|
|
(*outptrp)[3] = state->__value.__wchb[0];
|
|
#elif __BYTE_ORDER == __BIG_ENDIAN
|
|
(*outptrp)[0] = state->__value.__wchb[0];
|
|
(*outptrp)[1] = state->__value.__wchb[1];
|
|
(*outptrp)[2] = state->__value.__wchb[2];
|
|
(*outptrp)[3] = state->__value.__wchb[3];
|
|
#endif
|
|
|
|
/* Clear the state buffer. */
|
|
state->__count &= ~7;
|
|
|
|
return __GCONV_OK;
|
|
}
|
|
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from ISO 646-IRV to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ascii_internal_loop
|
|
#define TO_LOOP ascii_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ascii_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
if (*inptr > '\x7f') \
|
|
{ \
|
|
/* This is no correct ANSI_X3.4-1968 character. */ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
/* It's an one byte sequence. */ \
|
|
/* XXX unaligned. */ \
|
|
*((uint32_t *) outptr)++ = *inptr++; \
|
|
}
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to ISO 646-IRV. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 1
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_ascii_loop
|
|
#define TO_LOOP internal_ascii_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_ascii
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
if (*((uint32_t *) inptr) > 0x7f) \
|
|
{ \
|
|
/* This is no correct ANSI_X3.4-1968 character. */ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
/* It's an one byte sequence. */ \
|
|
*outptr++ = *((uint32_t *) inptr)++; \
|
|
}
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to UTF-8. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 1
|
|
#define MAX_NEEDED_TO 6
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_utf8_loop
|
|
#define TO_LOOP internal_utf8_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_utf8
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define MAX_NEEDED_OUTPUT MAX_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t wc = *((uint32_t *) inptr); \
|
|
\
|
|
/* Since we control every character we read this cannot happen. */ \
|
|
assert (wc <= 0x7fffffff); \
|
|
\
|
|
if (wc < 0x80) \
|
|
/* It's an one byte sequence. */ \
|
|
*outptr++ = (unsigned char) wc; \
|
|
else \
|
|
{ \
|
|
size_t step; \
|
|
char *start; \
|
|
\
|
|
for (step = 2; step < 6; ++step) \
|
|
if ((wc & encoding_mask[step - 2]) == 0) \
|
|
break; \
|
|
\
|
|
if (outptr + step > outend) \
|
|
{ \
|
|
/* Too long. */ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
start = outptr; \
|
|
*outptr = encoding_byte[step - 2]; \
|
|
outptr += step; \
|
|
--step; \
|
|
do \
|
|
{ \
|
|
start[step] = 0x80 | (wc & 0x3f); \
|
|
wc >>= 6; \
|
|
} \
|
|
while (--step > 0); \
|
|
start[0] |= wc; \
|
|
} \
|
|
\
|
|
inptr += 4; \
|
|
}
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UTF-8 to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MAX_NEEDED_FROM 6
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP utf8_internal_loop
|
|
#define TO_LOOP utf8_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_utf8_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t ch; \
|
|
uint_fast32_t cnt; \
|
|
uint_fast32_t i; \
|
|
\
|
|
/* Next input byte. */ \
|
|
ch = *inptr; \
|
|
\
|
|
if (ch < 0x80) \
|
|
{ \
|
|
/* One byte sequence. */ \
|
|
cnt = 1; \
|
|
++inptr; \
|
|
} \
|
|
else \
|
|
{ \
|
|
if (ch >= 0xc2 && ch < 0xe0) \
|
|
{ \
|
|
/* We expect two bytes. The first byte cannot be 0xc0 or 0xc1, \
|
|
otherwise the wide character could have been represented \
|
|
using a single byte. */ \
|
|
cnt = 2; \
|
|
ch &= 0x1f; \
|
|
} \
|
|
else if ((ch & 0xf0) == 0xe0) \
|
|
{ \
|
|
/* We expect three bytes. */ \
|
|
cnt = 3; \
|
|
ch &= 0x0f; \
|
|
} \
|
|
else if ((ch & 0xf8) == 0xf0) \
|
|
{ \
|
|
/* We expect four bytes. */ \
|
|
cnt = 4; \
|
|
ch &= 0x07; \
|
|
} \
|
|
else if ((ch & 0xfc) == 0xf8) \
|
|
{ \
|
|
/* We expect five bytes. */ \
|
|
cnt = 5; \
|
|
ch &= 0x03; \
|
|
} \
|
|
else if ((ch & 0xfe) == 0xfc) \
|
|
{ \
|
|
/* We expect six bytes. */ \
|
|
cnt = 6; \
|
|
ch &= 0x01; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* This is an illegal encoding. */ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
if (NEED_LENGTH_TEST && inptr + cnt > inend) \
|
|
{ \
|
|
/* We don't have enough input. But before we report that check \
|
|
that all the bytes are correct. */ \
|
|
for (i = 1; inptr + i < inend; ++i) \
|
|
if ((inptr[i] & 0xc0) != 0x80) \
|
|
break; \
|
|
result = (inptr + i == inend \
|
|
? __GCONV_INCOMPLETE_INPUT : __GCONV_ILLEGAL_INPUT); \
|
|
break; \
|
|
} \
|
|
\
|
|
/* Read the possible remaining bytes. */ \
|
|
for (i = 1; i < cnt; ++i) \
|
|
{ \
|
|
uint32_t byte = inptr[i]; \
|
|
\
|
|
if ((byte & 0xc0) != 0x80) \
|
|
/* This is an illegal encoding. */ \
|
|
break; \
|
|
\
|
|
ch <<= 6; \
|
|
ch |= byte & 0x3f; \
|
|
} \
|
|
\
|
|
/* If i < cnt, some trail byte was not >= 0x80, < 0xc0. \
|
|
If cnt > 2 and ch < 2^(5*cnt-4), the wide character ch could \
|
|
have been represented with fewer than cnt bytes. */ \
|
|
if (i < cnt || (cnt > 2 && (ch >> (5 * cnt - 4)) == 0)) \
|
|
{ \
|
|
/* This is an illegal encoding. */ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
inptr += cnt; \
|
|
} \
|
|
\
|
|
/* Now adjust the pointers and store the result. */ \
|
|
*((uint32_t *) outptr)++ = ch; \
|
|
}
|
|
|
|
#define STORE_REST \
|
|
{ \
|
|
/* We store the remaining bytes while converting them into the UCS4 \
|
|
format. We can assume that the first byte in the buffer is \
|
|
correct and that it requires a larger number of bytes than there \
|
|
are in the input buffer. */ \
|
|
wint_t ch = **inptrp; \
|
|
size_t cnt; \
|
|
\
|
|
state->__count = inend - *inptrp; \
|
|
\
|
|
if (ch >= 0xc2 && ch < 0xe0) \
|
|
{ \
|
|
/* We expect two bytes. The first byte cannot be 0xc0 or \
|
|
0xc1, otherwise the wide character could have been \
|
|
represented using a single byte. */ \
|
|
cnt = 2; \
|
|
ch &= 0x1f; \
|
|
} \
|
|
else if ((ch & 0xf0) == 0xe0) \
|
|
{ \
|
|
/* We expect three bytes. */ \
|
|
cnt = 3; \
|
|
ch &= 0x0f; \
|
|
} \
|
|
else if ((ch & 0xf8) == 0xf0) \
|
|
{ \
|
|
/* We expect four bytes. */ \
|
|
cnt = 4; \
|
|
ch &= 0x07; \
|
|
} \
|
|
else if ((ch & 0xfc) == 0xf8) \
|
|
{ \
|
|
/* We expect five bytes. */ \
|
|
cnt = 5; \
|
|
ch &= 0x03; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* We expect six bytes. */ \
|
|
cnt = 6; \
|
|
ch &= 0x01; \
|
|
} \
|
|
\
|
|
/* The first byte is already consumed. */ \
|
|
--cnt; \
|
|
while (++(*inptrp) < inend) \
|
|
{ \
|
|
ch <<= 6; \
|
|
ch |= **inptrp & 0x3f; \
|
|
--cnt; \
|
|
} \
|
|
\
|
|
/* Shift for the so far missing bytes. */ \
|
|
ch <<= cnt * 6; \
|
|
\
|
|
/* Store the value. */ \
|
|
state->__value.__wch = ch; \
|
|
}
|
|
|
|
#define UNPACK_BYTES \
|
|
{ \
|
|
wint_t wch = state->__value.__wch; \
|
|
inlen = state->__count; \
|
|
\
|
|
if (state->__value.__wch <= 0x7ff) \
|
|
bytebuf[0] = 0xc0; \
|
|
else if (state->__value.__wch <= 0xffff) \
|
|
bytebuf[0] = 0xe0; \
|
|
else if (state->__value.__wch <= 0x1fffff) \
|
|
bytebuf[0] = 0xf0; \
|
|
else if (state->__value.__wch <= 0x3ffffff) \
|
|
bytebuf[0] = 0xf8; \
|
|
else \
|
|
bytebuf[0] = 0xfc; \
|
|
\
|
|
while (inlen-- > 1) \
|
|
bytebuf[inlen] = 0x80 | (wch & 0x3f); \
|
|
\
|
|
bytebuf[0] |= wch; \
|
|
}
|
|
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UCS2 to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 2
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ucs2_internal_loop
|
|
#define TO_LOOP ucs2_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ucs2_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
*((uint32_t *) outptr)++ = *((uint16_t *) inptr)++;
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to UCS2. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 2
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_ucs2_loop
|
|
#define TO_LOOP internal_ucs2_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_ucs2
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
if (*((uint32_t *) inptr) >= 0x10000) \
|
|
{ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
*((uint16_t *) outptr)++ = *((uint32_t *) inptr)++; \
|
|
}
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UCS2 in other endianness to the internal (UCS4-like) format. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 2
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP ucs2reverse_internal_loop
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#define TO_LOOP ucs2reverse_internal_loop/* This is not used.*/
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#define FUNCTION_NAME __gconv_transform_ucs2reverse_internal
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#define ONE_DIRECTION 1
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#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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#define LOOPFCT FROM_LOOP
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#define BODY \
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*((uint32_t *) outptr)++ = bswap_16 (*(uint16_t *) inptr); \
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inptr += 2;
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#include <iconv/loop.c>
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#include <iconv/skeleton.c>
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/* Convert from the internal (UCS4-like) format to UCS2 in other endianness. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 2
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#define FROM_DIRECTION 1
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#define FROM_LOOP internal_ucs2reverse_loop
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#define TO_LOOP internal_ucs2reverse_loop/* This is not used.*/
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#define FUNCTION_NAME __gconv_transform_internal_ucs2reverse
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#define ONE_DIRECTION 1
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#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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#define LOOPFCT FROM_LOOP
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#define BODY \
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{ \
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uint32_t val = *((uint32_t *) inptr); \
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if (val >= 0x10000) \
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{ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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*((uint16_t *) outptr)++ = bswap_16 (val); \
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inptr += 4; \
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}
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#include <iconv/loop.c>
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#include <iconv/skeleton.c>
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