| /*- |
| * 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 "apr.h" |
| |
| #define ICONV_INTERNAL |
| #include "iconv.h" |
| |
| static int |
| table_open(struct iconv_ces *ces, apr_pool_t *ctx) |
| { |
| struct iconv_module *ccsmod = ces->mod->im_private; |
| ces->data = (void *)(ccsmod->im_desc->imd_data); |
| return 0; |
| } |
| |
| static const char *const * |
| table_names(struct iconv_ces *ces) |
| { |
| return ((struct iconv_ccs_desc *)(ces->data))->names; |
| } |
| |
| static APR_INLINE int |
| table_nbits(struct iconv_ces *ces) |
| { |
| return ((struct iconv_ccs_desc *)(ces->data))->nbits; |
| } |
| |
| static int |
| ces_nbits(struct iconv_ces *ces) |
| { |
| int res = table_nbits(ces); |
| |
| if (res > 8) |
| res >>= 1; |
| return res; |
| } |
| |
| static int |
| ces_nbytes(struct iconv_ces *ces) |
| { |
| int res = table_nbits(ces); |
| |
| return res == 16 ? 0 : (res > 8 ? 2 : 1); |
| } |
| |
| static apr_ssize_t |
| convert_from_ucs(struct iconv_ces *ces, ucs_t in, |
| unsigned char **outbuf, apr_size_t *outbytesleft) |
| { |
| struct iconv_ccs_desc *ccsd = ces->data; |
| ucs_t res; |
| apr_size_t bytes; |
| |
| if (in == UCS_CHAR_NONE) |
| return 1; /* No state reinitialization for table charsets */ |
| if (iconv_char32bit(in)) |
| return -1; |
| /* This cast to ucs2_t silences a MSVC argument conversion warning. |
| It's safe because we've just checked that 'in' is a 16-bit |
| (or shorter) character. */ |
| res = ICONV_CCS_CONVERT_FROM_UCS(ccsd, (ucs2_t)in); |
| if (res == UCS_CHAR_INVALID) |
| return -1; /* No character in output charset */ |
| bytes = res & 0xFF00 ? 2 : 1; |
| if (*outbytesleft < bytes) |
| return 0; /* No space in output buffer */ |
| if (bytes == 2) |
| *(*outbuf)++ = (res >> 8) & 0xFF; |
| *(*outbuf)++ = res & 0xFF; |
| *outbytesleft -= bytes; |
| return 1; |
| } |
| |
| static ucs_t |
| convert_to_ucs(struct iconv_ces *ces, const unsigned char **inbuf, |
| apr_size_t *inbytesleft) |
| { |
| struct iconv_ccs_desc *ccsd = ces->data; |
| unsigned char byte = *(*inbuf); |
| ucs_t res = ICONV_CCS_CONVERT_TO_UCS(ccsd, byte); |
| apr_size_t bytes = (res == UCS_CHAR_INVALID && table_nbits(ces) > 8) ? 2 : 1; |
| |
| if (*inbytesleft < bytes) |
| return UCS_CHAR_NONE; /* Not enough bytes in the input buffer */ |
| /* This cast to ucs2_t silences a MSVC argument conversion warning. |
| It's safe because we're creating s 16-bit char from two bytes. */ |
| if (bytes == 2) |
| res = ICONV_CCS_CONVERT_TO_UCS(ccsd, |
| (ucs2_t)((byte << 8) | (* ++(*inbuf)))); |
| (*inbuf) ++; |
| *inbytesleft -= bytes; |
| return res; |
| } |
| |
| static apr_status_t |
| table_load_ccs(struct iconv_module *mod, apr_pool_t *ctx) |
| { |
| struct iconv_module *ccsmod; |
| int error; |
| |
| if (mod->im_args == NULL) |
| return APR_EINVAL; |
| if (mod->im_private != NULL) |
| return APR_EINVAL; |
| error = apr_iconv_mod_load(mod->im_args, ICMOD_UC_CCS, NULL, &ccsmod, ctx); |
| if (error) |
| return error; |
| mod->im_private = ccsmod; |
| return APR_SUCCESS; |
| } |
| |
| static apr_status_t |
| table_unload_ccs(struct iconv_module *mod, apr_pool_t *ctx) |
| { |
| struct iconv_module *ccsmod = mod->im_private; |
| if (ccsmod == NULL) |
| return APR_EINVAL; |
| mod->im_private = NULL; |
| return apr_iconv_mod_unload(ccsmod, ctx); |
| } |
| |
| static apr_status_t |
| table_event(struct iconv_module *mod, int event, apr_pool_t *ctx) |
| { |
| switch (event) { |
| case ICMODEV_LOAD: |
| case ICMODEV_UNLOAD: |
| break; |
| case ICMODEV_DYN_LOAD: |
| return table_load_ccs(mod,ctx); |
| case ICMODEV_DYN_UNLOAD: |
| return table_unload_ccs(mod,ctx); |
| default: |
| return APR_EINVAL; |
| } |
| return APR_SUCCESS; |
| } |
| |
| static const struct iconv_ces_desc iconv_ces_desc = { |
| table_open, |
| apr_iconv_ces_zero, |
| apr_iconv_ces_no_func, |
| table_names, |
| ces_nbits, |
| ces_nbytes, |
| convert_from_ucs, |
| convert_to_ucs, |
| NULL |
| }; |
| |
| struct iconv_module_desc iconv_module = { |
| ICMOD_UC_CES, |
| table_event, |
| NULL, |
| &iconv_ces_desc |
| }; |