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

   1
   2 /*
   3  * This file is part of DisOrder.
   4  * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19  * USA
  20  */
  21 #ifndef CHARSET_H
  22 #define CHARSET_H
  23
  24 #include "log.h"
  25
  26 struct dynstr;
  27
  28 /* Character encoding conversion routines */
  29
  30 char *mb2utf8(const char *mb);
  31 char *utf82mb(const char *utf8);
  32 /* various conversions, between multibyte strings (mb) in
  33  * whatever the current encoding is, and UTF-8 strings (utf8).  On
  34  * error, a null pointer is returned and @errno@ set. */
  35
  36 char *any2utf8(const char *from/*encoding*/,
  37                const char *any/*string*/);
  38 /* arbitrary conversions from any null-free byte-based encoding that
  39  * iconv knows about to UTF-8 */
  40
  41 char *any2mb(const char *from/*encoding or 0*/,
  42              const char *any/*string*/);
  43 /* Arbitrary conversions from any null-free byte-based encoding that
  44  * iconv knows about to a multibyte string.  If FROM is 0 then ANY is
  45  * returned unchanged. */
  46
  47 char *any2any(const char *from/*encoding or 0*/,
  48               const char *to/*encoding to 0*/,
  49               const char *any/*string*/);
  50 /* Arbitrary conversions between any null-free byte-based encodings
  51  * that iconv knows.  If FROM and TO are both 0 then ANY is returned
  52  * unchanged. */
  53
  54 /** @brief Insist that @p s is not null
  55  * @param s Pointer to check
  56  * @return @p s
  57  *
  58  * Terminates the process if @p s is a null pointer.
  59  */
  60 static inline char *nullcheck(char *s) {
  61   if(!s) exitfn(1);                     /* assume an error already reported */
  62   return s;
  63 }
  64
  65 const char *truncate_for_display(const char *s, long max);
  66
  67 #endif /* CHARSET_H */
  68
  69 /*
  70 Local Variables:
  71 c-basic-offset:2
  72 comment-column:40
  73 End:
  74 */