mdw@git.distorted.org.uk Git - disorder/blob - lib/charset.h

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2004, 2005, 2007-2009 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file lib/charset.h @brief Character set conversion */
  19 #ifndef CHARSET_H
  20 #define CHARSET_H
  21
  22 #include "log.h"
  23
  24 struct dynstr;
  25
  26 /* Character encoding conversion routines */
  27
  28 char *mb2utf8(const char *mb);
  29 char *utf82mb(const char *utf8);
  30 /* various conversions, between multibyte strings (mb) in
  31  * whatever the current encoding is, and UTF-8 strings (utf8).  On
  32  * error, a null pointer is returned and @errno@ set. */
  33
  34 char *any2utf8(const char *from/*encoding*/,
  35                const char *any/*string*/);
  36 /* arbitrary conversions from any null-free byte-based encoding that
  37  * iconv knows about to UTF-8 */
  38
  39 char *any2mb(const char *from/*encoding or 0*/,
  40              const char *any/*string*/);
  41 /* Arbitrary conversions from any null-free byte-based encoding that
  42  * iconv knows about to a multibyte string.  If FROM is 0 then ANY is
  43  * returned unchanged. */
  44
  45 char *any2any(const char *from/*encoding or 0*/,
  46               const char *to/*encoding to 0*/,
  47               const char *any/*string*/);
  48 /* Arbitrary conversions between any null-free byte-based encodings
  49  * that iconv knows.  If FROM and TO are both 0 then ANY is returned
  50  * unchanged. */
  51
  52 char *mb2utf8_f(char *mb);
  53 char *utf82mb_f(char *utf8);
  54 char *any2utf8_f(const char *from/*encoding*/,
  55                  char *any/*string*/);
  56 char *any2mb_f(const char *from/*encoding or 0*/,
  57                char *any/*string*/);
  58 char *any2any_f(const char *from/*encoding or 0*/,
  59                 const char *to/*encoding to 0*/,
  60                 char *any/*string*/);
  61
  62 /** @brief Insist that @p s is not null
  63  * @param s Pointer to check
  64  * @return @p s
  65  *
  66  * Terminates the process if @p s is a null pointer.
  67  */
  68 static inline char *nullcheck(char *s) {
  69   if(!s) exitfn(1);                     /* assume an error already reported */
  70   return s;
  71 }
  72
  73 const char *truncate_for_display(const char *s, long max);
  74
  75 #endif /* CHARSET_H */
  76
  77 /*
  78 Local Variables:
  79 c-basic-offset:2
  80 comment-column:40
  81 End:
  82 */