diff options
Diffstat (limited to 'libidn/iconvme.c')
| -rw-r--r-- | libidn/iconvme.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libidn/iconvme.c b/libidn/iconvme.c deleted file mode 100644 index 6284ca7509..0000000000 --- a/libidn/iconvme.c +++ /dev/null @@ -1,171 +0,0 @@ -/* Recode strings between character sets, using iconv. - Copyright (C) 2002-2018 Free Software Foundation, Inc. - - This program 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, or (at - your option) any later version. - - This program 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 this program; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -/* Get prototype. */ -#include "iconvme.h" - -/* Get malloc. */ -#include <stdlib.h> - -/* Get strcmp. */ -#include <string.h> - -/* Get errno. */ -#include <errno.h> - -#ifdef _LIBC -# define HAVE_ICONV 1 -#else -/* Get strdup. */ -# include "strdup.h" -#endif - -#if HAVE_ICONV -/* Get iconv etc. */ -# include <iconv.h> -/* Get MB_LEN_MAX, CHAR_BIT. */ -# include <limits.h> -#endif - -#ifndef SIZE_MAX -# define SIZE_MAX ((size_t) -1) -#endif - -/* Convert a zero-terminated string STR from the FROM_CODSET code set - to the TO_CODESET code set. The returned string is allocated using - malloc, and must be dellocated by the caller using free. On - failure, NULL is returned and errno holds the error reason. Note - that if TO_CODESET uses \0 for anything but to terminate the - string, the caller of this function may have difficulties finding - out the length of the output string. */ -char * -iconv_string (const char *str, const char *from_codeset, - const char *to_codeset) -{ - char *dest = NULL; -#if HAVE_ICONV - iconv_t cd; - char *outp; - char *p = (char *) str; - size_t inbytes_remaining = strlen (p); - /* Guess the maximum length the output string can have. */ - size_t outbuf_size = inbytes_remaining + 1; - size_t outbytes_remaining; - size_t err; - int have_error = 0; - - /* Use a worst-case output size guess, so long as that wouldn't be - too large for comfort. It's OK if the guess is wrong so long as - it's nonzero. */ - size_t approx_sqrt_SIZE_MAX = SIZE_MAX >> (sizeof (size_t) * CHAR_BIT / 2); - if (outbuf_size <= approx_sqrt_SIZE_MAX / MB_LEN_MAX) - outbuf_size *= MB_LEN_MAX; - outbytes_remaining = outbuf_size - 1; -#endif - - if (strcmp (to_codeset, from_codeset) == 0) - return strdup (str); - -#if HAVE_ICONV - cd = iconv_open (to_codeset, from_codeset); - if (cd == (iconv_t) -1) - return NULL; - - outp = dest = (char *) malloc (outbuf_size); - if (dest == NULL) - goto out; - -again: - err = iconv (cd, &p, &inbytes_remaining, &outp, &outbytes_remaining); - - if (err == (size_t) - 1) - { - switch (errno) - { - case EINVAL: - /* Incomplete text, do not report an error */ - break; - - case E2BIG: - { - size_t used = outp - dest; - size_t newsize = outbuf_size * 2; - char *newdest; - - if (newsize <= outbuf_size) - { - errno = ENOMEM; - have_error = 1; - goto out; - } - newdest = (char *) realloc (dest, newsize); - if (newdest == NULL) - { - have_error = 1; - goto out; - } - dest = newdest; - outbuf_size = newsize; - - outp = dest + used; - outbytes_remaining = outbuf_size - used - 1; /* -1 for NUL */ - - goto again; - } - break; - - case EILSEQ: - have_error = 1; - break; - - default: - have_error = 1; - break; - } - } - - *outp = '\0'; - -out: - { - int save_errno = errno; - - if (iconv_close (cd) < 0 && !have_error) - { - /* If we didn't have a real error before, make sure we restore - the iconv_close error below. */ - save_errno = errno; - have_error = 1; - } - - if (have_error && dest) - { - free (dest); - dest = NULL; - errno = save_errno; - } - } -#else - errno = ENOSYS; -#endif - - return dest; -} |