diff options
Diffstat (limited to 'libidn')
| -rw-r--r-- | libidn/iconvme.c | 159 | ||||
| -rw-r--r-- | libidn/iconvme.h | 25 | ||||
| -rw-r--r-- | libidn/toutf8.c | 168 |
3 files changed, 214 insertions, 138 deletions
diff --git a/libidn/iconvme.c b/libidn/iconvme.c new file mode 100644 index 0000000000..daf0c8e349 --- /dev/null +++ b/libidn/iconvme.c @@ -0,0 +1,159 @@ +/* Recode strings between character sets, using iconv. + Copyright (C) 2002, 2003, 2004, 2005 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#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. */ +# include <limits.h> +#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) * MB_LEN_MAX; + size_t outbytes_remaining = outbuf_size - 1; /* -1 for NUL */ + size_t err; + int have_error = 0; +#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; +} diff --git a/libidn/iconvme.h b/libidn/iconvme.h new file mode 100644 index 0000000000..3eb9b32b49 --- /dev/null +++ b/libidn/iconvme.h @@ -0,0 +1,25 @@ +/* Recode strings between character sets, using iconv. + Copyright (C) 2004 Free Software Foundation, Inc. + Written by Simon Josefsson. + + 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef ICONVME_H +# define ICONVME_H + +extern char *iconv_string (const char *string, const char *from_code, + const char *to_code); + +#endif /* ICONVME_H */ diff --git a/libidn/toutf8.c b/libidn/toutf8.c index 262f252d5f..dad47c9af0 100644 --- a/libidn/toutf8.c +++ b/libidn/toutf8.c @@ -1,5 +1,5 @@ -/* toutf8.c Convert strings from system locale into UTF-8. - * Copyright (C) 2002, 2003, 2004 Simon Josefsson +/* toutf8.c --- Convert strings from system locale into UTF-8. + * Copyright (C) 2002, 2003, 2004, 2005 Simon Josefsson * * This file is part of GNU Libidn. * @@ -23,33 +23,36 @@ # include "config.h" #endif +/* Get prototypes. */ +#include "stringprep.h" + +/* Get fprintf. */ #include <stdio.h> + +/* Get getenv. */ #include <stdlib.h> + +/* Get strlen. */ #include <string.h> -#include <errno.h> -#include <sys/param.h> -#include "stringprep.h" +/* Get iconv_string. */ +#include "iconvme.h" #ifdef _LIBC # define HAVE_ICONV 1 # define LOCALE_WORKS 1 -# define ICONV_CONST #endif -#ifdef HAVE_ICONV -# include <iconv.h> - -# if LOCALE_WORKS -# include <langinfo.h> -# include <locale.h> -# endif +#if LOCALE_WORKS +# include <langinfo.h> +# include <locale.h> +#endif -# ifdef _LIBC -# define stringprep_locale_charset() nl_langinfo (CODESET) -# else +#ifdef _LIBC +# define stringprep_locale_charset() nl_langinfo (CODESET) +#else /** - * stringprep_locale_charset: + * stringprep_locale_charset - return charset used in current locale * * Find out current locale charset. The function respect the CHARSET * environment variable, but typically uses nl_langinfo(CODESET) when @@ -76,19 +79,19 @@ stringprep_locale_charset (void) if (charset && *charset) return charset; -# ifdef LOCALE_WORKS +# ifdef LOCALE_WORKS charset = nl_langinfo (CODESET); if (charset && *charset) return charset; -# endif +# endif return "ASCII"; } -# endif +#endif /** - * stringprep_convert: + * stringprep_convert - encode string using new character set * @str: input zero-terminated string. * @to_codeset: name of destination character set. * @from_codeset: name of origin character set, as used by @str. @@ -103,132 +106,21 @@ char * stringprep_convert (const char *str, const char *to_codeset, const char *from_codeset) { - iconv_t cd; - char *dest; - char *outp; - ICONV_CONST char *p; - size_t inbytes_remaining; - size_t outbytes_remaining; - size_t err; - size_t outbuf_size; - int have_error = 0; - - if (strcmp (to_codeset, from_codeset) == 0) - { -#if defined HAVE_STRDUP || defined _LIBC - return strdup (str); +#if HAVE_ICONV + return iconv_string (str, from_codeset, to_codeset); #else - char *p; - p = malloc (strlen (str) + 1); - if (!p) - return NULL; - return strcpy (p, str); -#endif - } - - cd = iconv_open (to_codeset, from_codeset); - - if (cd == (iconv_t) - 1) - return NULL; - - p = (ICONV_CONST char *) str; - - inbytes_remaining = strlen (p); - /* Guess the maximum length the output string can have. */ - outbuf_size = (inbytes_remaining + 1) * MAX (7, MB_CUR_MAX); - - outp = dest = malloc (outbuf_size); - if (dest == NULL) - goto out; - outbytes_remaining = outbuf_size - 1; /* -1 for NUL */ - -again: - - err = iconv (cd, (ICONV_CONST char **) &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; - char *newdest; - - outbuf_size *= 2; - newdest = realloc (dest, outbuf_size); - if (newdest == NULL) - { - have_error = 1; - goto out; - } - dest = newdest; - - 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'; - - if (*p != '\0') - have_error = 1; - - out: - iconv_close (cd); - - if (have_error) - { - free (dest); - dest = NULL; - } - - return dest; -} - -#else /* HAVE_ICONV */ - -const char * -stringprep_locale_charset () -{ - return "ASCII"; -} - -char * -stringprep_convert (const char *str, - const char *to_codeset, const char *from_codeset) -{ char *p; fprintf (stderr, "libidn: warning: libiconv not installed, cannot " "convert data to UTF-8\n"); p = malloc (strlen (str) + 1); if (!p) return NULL; - strcpy (p, str); - return p; + return strcpy (p, str); +#endif } -#endif /* HAVE_ICONV */ - /** - * stringprep_locale_to_utf8: + * stringprep_locale_to_utf8 - convert locale encoded string to UTF-8 * @str: input zero terminated string. * * Convert string encoded in the locale's character set into UTF-8 by @@ -244,7 +136,7 @@ stringprep_locale_to_utf8 (const char *str) } /** - * stringprep_utf8_to_locale: + * stringprep_utf8_to_locale - encode UTF-8 string to locale encoding * @str: input zero terminated string. * * Convert string encoded in UTF-8 into the locale's character set by |