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, 2008 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 2 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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * 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, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20 #ifndef CHARSET_H
  21 #define CHARSET_H
  22
  23 struct dynstr;
  24
  25 /* Character encoding conversion routines */
  26
  27 char *mb2utf8(const char *mb);
  28 char *utf82mb(const char *utf8);
  29 /* various conversions, between multibyte strings (mb) in
  30  * whatever the current encoding is, and UTF-8 strings (utf8).  On
  31  * error, a null pointer is returned and @errno@ set. */
  32
  33 char *any2utf8(const char *from/*encoding*/,
  34                const char *any/*string*/);
  35 /* arbitrary conversions from any null-free byte-based encoding that
  36  * iconv knows about to UTF-8 */
  37
  38 char *any2mb(const char *from/*encoding or 0*/,
  39              const char *any/*string*/);
  40 /* Arbitrary conversions from any null-free byte-based encoding that
  41  * iconv knows about to a multibyte string.  If FROM is 0 then ANY is
  42  * returned unchanged. */
  43
  44 char *any2any(const char *from/*encoding or 0*/,
  45               const char *to/*encoding to 0*/,
  46               const char *any/*string*/);
  47 /* Arbitrary conversions between any null-free byte-based encodings
  48  * that iconv knows.  If FROM and TO are both 0 then ANY is returned
  49  * unchanged. */
  50
  51 /** @brief Insist that @p s is not null
  52  * @param s Pointer to check
  53  * @return @p s
  54  *
  55  * Terminates the process if @p s is a null pointer.
  56  */
  57 static inline char *nullcheck(char *s) {
  58   if(!s) exitfn(1);                     /* assume an error already reported */
  59   return s;
  60 }
  61
  62 const char *truncate_for_display(const char *s, long max);
  63
  64 #endif /* CHARSET_H */
  65
  66 /*
  67 Local Variables:
  68 c-basic-offset:2
  69 comment-column:40
  70 End:
  71 */