gnu/dist/gettext/gettext-tools/src/po-charset.h

   1 /* Charset handling while reading PO files.
   2    Copyright (C) 2001-2003 Free Software Foundation, Inc.
   3    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
   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, or (at your option)
   8    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, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _PO_CHARSET_H
  20 #define _PO_CHARSET_H
  21
  22 #include <stdbool.h>
  23
  24 #if HAVE_ICONV
  25 #include <iconv.h>
  26 #endif
  27
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33
  34 /* Canonicalize an encoding name.
  35    The results of this function are statically allocated and can be
  36    compared using ==.  */
  37 extern const char *po_charset_canonicalize (const char *charset);
  38
  39 /* The canonicalized encoding name for ASCII.  */
  40 extern DLL_VARIABLE const char *po_charset_ascii;
  41
  42 /* The canonicalized encoding name for UTF-8.  */
  43 extern DLL_VARIABLE const char *po_charset_utf8;
  44
  45 /* Test for ASCII compatibility.  */
  46 extern bool po_charset_ascii_compatible (const char *canon_charset);
  47
  48 /* Test for a weird encoding, i.e. an encoding which has double-byte
  49    characters ending in 0x5C.  */
  50 extern bool po_is_charset_weird (const char *canon_charset);
  51
  52 /* Test for a weird CJK encoding, i.e. a weird encoding with CJK structure.
  53    An encoding has CJK structure if every valid character stream is composed
  54    of single bytes in the range 0x{00..7F} and of byte pairs in the range
  55    0x{80..FF}{30..FF}.  */
  56 extern bool po_is_charset_weird_cjk (const char *canon_charset);
  57
  58
  59 /* The PO file's encoding, as specified in the header entry.  */
  60 extern DLL_VARIABLE const char *po_lex_charset;
  61
  62 #if HAVE_ICONV
  63 /* Converter from the PO file's encoding to UTF-8.  */
  64 extern DLL_VARIABLE iconv_t po_lex_iconv;
  65 #endif
  66 /* If no converter is available, some information about the structure of the
  67    PO file's encoding.  */
  68 extern DLL_VARIABLE bool po_lex_weird_cjk;
  69
  70 /* Initialize the PO file's encoding.  */
  71 extern void po_lex_charset_init (void);
  72
  73 /* Set the PO file's encoding from the header entry.  */
  74 extern void po_lex_charset_set (const char *header_entry,
  75                                 const char *filename);
  76
  77 /* Finish up with the PO file's encoding.  */
  78 extern void po_lex_charset_close (void);
  79
  80
  81 #ifdef __cplusplus
  82 }
  83 #endif
  84
  85
  86 #endif /* _PO_CHARSET_H */