diff options
Diffstat (limited to 'iconv/gconv_trans.c')
| -rw-r--r-- | iconv/gconv_trans.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/iconv/gconv_trans.c b/iconv/gconv_trans.c deleted file mode 100644 index 53b8822615..0000000000 --- a/iconv/gconv_trans.c +++ /dev/null @@ -1,239 +0,0 @@ -/* Transliteration using the locale's data. - Copyright (C) 2000-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <dlfcn.h> -#include <search.h> -#include <stdint.h> -#include <string.h> -#include <stdlib.h> - -#include <libc-lock.h> -#include "gconv_int.h" -#include "../locale/localeinfo.h" - - -int -__gconv_transliterate (struct __gconv_step *step, - struct __gconv_step_data *step_data, - const unsigned char *inbufstart, - const unsigned char **inbufp, - const unsigned char *inbufend, - unsigned char **outbufstart, size_t *irreversible) -{ - /* Find out about the locale's transliteration. */ - uint_fast32_t size; - const uint32_t *from_idx; - const uint32_t *from_tbl; - const uint32_t *to_idx; - const uint32_t *to_tbl; - const uint32_t *winbuf; - const uint32_t *winbufend; - uint_fast32_t low; - uint_fast32_t high; - - /* The input buffer. There are actually 4-byte values. */ - winbuf = (const uint32_t *) *inbufp; - winbufend = (const uint32_t *) inbufend; - - __gconv_fct fct = step->__fct; -#ifdef PTR_DEMANGLE - if (step->__shlib_handle != NULL) - PTR_DEMANGLE (fct); -#endif - - /* If there is no transliteration information in the locale don't do - anything and return the error. */ - size = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_TRANSLIT_TAB_SIZE); - if (size == 0) - goto no_rules; - - /* Get the rest of the values. */ - from_idx = - (const uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_FROM_IDX); - from_tbl = - (const uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_FROM_TBL); - to_idx = - (const uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_TO_IDX); - to_tbl = - (const uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_TO_TBL); - - /* Test whether there is enough input. */ - if (winbuf + 1 > winbufend) - return (winbuf == winbufend - ? __GCONV_EMPTY_INPUT : __GCONV_INCOMPLETE_INPUT); - - /* The array starting at FROM_IDX contains indeces to the string table - in FROM_TBL. The indeces are sorted wrt to the strings. I.e., we - are doing binary search. */ - low = 0; - high = size; - while (low < high) - { - uint_fast32_t med = (low + high) / 2; - uint32_t idx; - int cnt; - - /* Compare the string at this index with the string at the current - position in the input buffer. */ - idx = from_idx[med]; - cnt = 0; - do - { - if (from_tbl[idx + cnt] != winbuf[cnt]) - /* Does not match. */ - break; - ++cnt; - } - while (from_tbl[idx + cnt] != L'\0' && winbuf + cnt < winbufend); - - if (cnt > 0 && from_tbl[idx + cnt] == L'\0') - { - /* Found a matching input sequence. Now try to convert the - possible replacements. */ - uint32_t idx2 = to_idx[med]; - - do - { - /* Determine length of replacement. */ - uint_fast32_t len = 0; - int res; - const unsigned char *toinptr; - unsigned char *outptr; - - while (to_tbl[idx2 + len] != L'\0') - ++len; - - /* Try this input text. */ - toinptr = (const unsigned char *) &to_tbl[idx2]; - outptr = *outbufstart; - res = DL_CALL_FCT (fct, - (step, step_data, &toinptr, - (const unsigned char *) &to_tbl[idx2 + len], - &outptr, NULL, 0, 0)); - if (res != __GCONV_ILLEGAL_INPUT) - { - /* If the conversion succeeds we have to increment the - input buffer. */ - if (res == __GCONV_EMPTY_INPUT) - { - *inbufp += cnt * sizeof (uint32_t); - ++*irreversible; - res = __GCONV_OK; - } - /* Do not increment the output pointer if we could not - store the entire output. */ - if (res != __GCONV_FULL_OUTPUT) - *outbufstart = outptr; - - return res; - } - - /* Next replacement. */ - idx2 += len + 1; - } - while (to_tbl[idx2] != L'\0'); - - /* Nothing found, continue searching. */ - } - else if (cnt > 0) - /* This means that the input buffer contents matches a prefix of - an entry. Since we cannot match it unless we get more input, - we will tell the caller about it. */ - return __GCONV_INCOMPLETE_INPUT; - - if (winbuf + cnt >= winbufend || from_tbl[idx + cnt] < winbuf[cnt]) - low = med + 1; - else - high = med; - } - - no_rules: - /* Maybe the character is supposed to be ignored. */ - if (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_TRANSLIT_IGNORE_LEN) != 0) - { - int n = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_TRANSLIT_IGNORE_LEN); - const uint32_t *ranges = - (const uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_IGNORE); - const uint32_t wc = *(const uint32_t *) (*inbufp); - int i; - - /* Test whether there is enough input. */ - if (winbuf + 1 > winbufend) - return (winbuf == winbufend - ? __GCONV_EMPTY_INPUT : __GCONV_INCOMPLETE_INPUT); - - for (i = 0; i < n; ranges += 3, ++i) - if (ranges[0] <= wc && wc <= ranges[1] - && (wc - ranges[0]) % ranges[2] == 0) - { - /* Matches the range. Ignore it. */ - *inbufp += 4; - ++*irreversible; - return __GCONV_OK; - } - else if (wc < ranges[0]) - /* There cannot be any other matching range since they are - sorted. */ - break; - } - - /* One last chance: use the default replacement. */ - if (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_TRANSLIT_DEFAULT_MISSING_LEN) != 0) - { - const uint32_t *default_missing = (const uint32_t *) - _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TRANSLIT_DEFAULT_MISSING); - const unsigned char *toinptr = (const unsigned char *) default_missing; - uint32_t len = _NL_CURRENT_WORD (LC_CTYPE, - _NL_CTYPE_TRANSLIT_DEFAULT_MISSING_LEN); - unsigned char *outptr; - int res; - - /* Test whether there is enough input. */ - if (winbuf + 1 > winbufend) - return (winbuf == winbufend - ? __GCONV_EMPTY_INPUT : __GCONV_INCOMPLETE_INPUT); - - outptr = *outbufstart; - res = DL_CALL_FCT (fct, - (step, step_data, &toinptr, - (const unsigned char *) (default_missing + len), - &outptr, NULL, 0, 0)); - - if (res != __GCONV_ILLEGAL_INPUT) - { - /* If the conversion succeeds we have to increment the - input buffer. */ - if (res == __GCONV_EMPTY_INPUT) - { - /* This worked but is not reversible. */ - ++*irreversible; - *inbufp += 4; - res = __GCONV_OK; - } - *outbufstart = outptr; - - return res; - } - } - - /* Haven't found a match. */ - return __GCONV_ILLEGAL_INPUT; -} -libc_hidden_def (__gconv_transliterate) |