samba-mirror/source4/include/charset.h

/* 
   Unix SMB/CIFS implementation.
   charset defines
   Copyright (C) Andrew Tridgell 2001
   Copyright (C) Jelmer Vernooij 2002
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/* this defines the charset types used in samba */
typedef enum {CH_UTF16=0, CH_UNIX=1, CH_DISPLAY=2, CH_DOS=3, CH_UTF8=4, CH_UTF16BE=5} charset_t;

#define NUM_CHARSETS 6

/*
 *   for each charset we have a function that pulls from that charset to
 *     a ucs2 buffer, and a function that pushes to a ucs2 buffer
 *     */

struct charset_functions {
	const char *name;
	size_t (*pull)(void *, const char **inbuf, size_t *inbytesleft,
				   char **outbuf, size_t *outbytesleft);
	size_t (*push)(void *, const char **inbuf, size_t *inbytesleft,
				   char **outbuf, size_t *outbytesleft);
	struct charset_functions *prev, *next;
};

/* this type is used for manipulating unicode codepoints */
typedef uint32_t codepoint_t;

#define INVALID_CODEPOINT ((codepoint_t)-1)


/* generic iconv conversion structure */
typedef struct {
	size_t (*direct)(void *cd, const char **inbuf, size_t *inbytesleft,
			 char **outbuf, size_t *outbytesleft);
	size_t (*pull)(void *cd, const char **inbuf, size_t *inbytesleft,
		       char **outbuf, size_t *outbytesleft);
	size_t (*push)(void *cd, const char **inbuf, size_t *inbytesleft,
		       char **outbuf, size_t *outbytesleft);
	void *cd_direct, *cd_pull, *cd_push;
} *smb_iconv_t;