| /*- |
| * 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. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by Konstantin Chuguev |
| * and its contributors. |
| * |
| * 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. |
| * |
| * iconv (Charset Conversion Library) v1.0 |
| */ |
| |
| #include <stdlib.h> /* free, malloc */ |
| |
| #define ICONV_INTERNAL |
| #include <iconv.h> |
| |
| static const char * const names[] = { |
| "iso-10646-ucs-2", "csUnicode", "ucs-2", NULL |
| }; |
| |
| static const char * const * |
| ucs2_names(struct iconv_ces *ces) |
| { |
| return names; |
| } |
| |
| static apr_ssize_t |
| convert_from_ucs(struct iconv_ces *ces, ucs_t in, |
| unsigned char **outbuf, apr_size_t *outbytesleft) |
| { |
| apr_size_t bytes; |
| int *state = ces->data; |
| |
| if (in == UCS_CHAR_NONE) |
| return 1; /* No state reinitialization for table charsets */ |
| if (iconv_char32bit(in)) |
| return -1; /* No such character in UCS-2 */ |
| bytes = *state ? 2 : 4; |
| if (*outbytesleft < bytes) |
| return 0; /* No space in the output buffer */ |
| if (*state) { |
| *(*outbuf)++ = 0xFE; |
| *(*outbuf)++ = 0xFF; |
| *state = 1; |
| } |
| *(*outbuf)++ = (in >> 8) & 0xFF; |
| *(*outbuf)++ = in & 0xFF; |
| *outbytesleft -= bytes; |
| return 1; |
| } |
| |
| static APR_INLINE ucs_t |
| msb(const unsigned char *buf) |
| { |
| return (buf[0] << 8) | buf[1]; |
| } |
| |
| static ucs_t |
| convert_to_ucs(struct iconv_ces *ces, const unsigned char **inbuf, |
| apr_size_t *inbytesleft) |
| { |
| ucs_t res; |
| int *state = ces->data; |
| int mark; |
| |
| if (*inbytesleft < 2) |
| return UCS_CHAR_NONE; /* Not enough bytes in the input buffer */ |
| res = msb((const unsigned char*)*inbuf); |
| switch (res) { |
| case UCS_CHAR_ZERO_WIDTH_NBSP: |
| *state = 1; |
| mark = 1; |
| break; |
| case UCS_CHAR_INVALID: |
| *state = 2; |
| mark = 1; |
| break; |
| default: |
| mark = 0; |
| } |
| if (mark) { |
| if (*inbytesleft < 4) |
| return UCS_CHAR_NONE; /* Not enough bytes in the input buffer */ |
| *inbytesleft -= 2; |
| res = msb(*inbuf += 2); |
| } |
| if (*state == 2) { |
| res = (unsigned char)(*(*inbuf) ++); |
| res |= (unsigned char)(*(*inbuf) ++) << 8; |
| } else |
| *inbuf += 2; |
| *inbytesleft -= 2; |
| return res; |
| } |
| |
| static const struct iconv_ces_desc iconv_ces_desc = { |
| apr_iconv_ces_open_func, |
| apr_iconv_ces_close_func, |
| apr_iconv_ces_reset_func, |
| ucs2_names, |
| apr_iconv_ces_nbits8, |
| apr_iconv_ces_zero, |
| convert_from_ucs, |
| convert_to_ucs, |
| NULL |
| }; |
| |
| struct iconv_module_desc iconv_module = { |
| ICMOD_UC_CES, |
| apr_iconv_mod_noevent, |
| NULL, |
| &iconv_ces_desc |
| }; |