/* -*- mode: C; c-file-style: "gnu" -*- */
/* xdgmimeint.h: Internal defines and functions.
 *
 * More info can be found at http://www.freedesktop.org/standards/
 *
 * Copyright (C) 2003  Red Hat, Inc.
 * Copyright (C) 2003  Jonathan Blandford <jrb@alum.mit.edu>
 *
 * Licensed under the Academic Free License version 2.0
 * Or under the following terms:
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef __XDG_MIME_INT_H__
#define __XDG_MIME_INT_H__

#if __GNUC__ == 4 && __GNUC_MINOR__ >= 2
#pragma GCC diagnostic ignored "-Wsign-compare"
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif

#include "xdgmime.h"


#ifndef	FALSE
#define	FALSE (0)
#endif

#ifndef	TRUE
#define	TRUE (!FALSE)
#endif

/* FIXME: Needs to be configure check */
typedef unsigned int   xdg_unichar_t;
typedef unsigned char  xdg_uchar8_t;
typedef unsigned short xdg_uint16_t;
typedef unsigned int   xdg_uint32_t;

#ifdef XDG_PREFIX
#define _xdg_utf8_skip       XDG_RESERVED_ENTRY(utf8_skip)
#define _xdg_utf8_to_ucs4    XDG_RESERVED_ENTRY(utf8_to_ucs4)
#define _xdg_ucs4_to_lower   XDG_RESERVED_ENTRY(ucs4_to_lower)
#define _xdg_utf8_validate   XDG_RESERVED_ENTRY(utf8_validate)
#define _xdg_get_base_name   XDG_RESERVED_ENTRY(get_base_name)
#define _xdg_convert_to_ucs4 XDG_RESERVED_ENTRY(convert_to_ucs4)
#define _xdg_reverse_ucs4    XDG_RESERVED_ENTRY(reverse_ucs4)
#endif

#define SWAP_BE16_TO_LE16(val) (xdg_uint16_t)(((xdg_uint16_t)(val) << 8)|((xdg_uint16_t)(val) >> 8))

#define SWAP_BE32_TO_LE32(val) (xdg_uint32_t)((((xdg_uint32_t)(val) & 0xFF000000U) >> 24) |	\
					      (((xdg_uint32_t)(val) & 0x00FF0000U) >> 8) |	\
					      (((xdg_uint32_t)(val) & 0x0000FF00U) << 8) |	\
					      (((xdg_uint32_t)(val) & 0x000000FFU) << 24))
/* UTF-8 utils
 */
extern const char *const _xdg_utf8_skip;
#define _xdg_utf8_next_char(p) (char *)((p) + _xdg_utf8_skip[*(unsigned char *)(p)])
#define _xdg_utf8_char_size(p) (int) (_xdg_utf8_skip[*(unsigned char *)(p)])

xdg_unichar_t  _xdg_utf8_to_ucs4  (const char    *source);
xdg_unichar_t  _xdg_ucs4_to_lower (xdg_unichar_t  source);
int            _xdg_utf8_validate (const char    *source);
xdg_unichar_t *_xdg_convert_to_ucs4 (const char *source, int *len);
void           _xdg_reverse_ucs4 (xdg_unichar_t *source, int len);
const char    *_xdg_get_base_name (const char    *file_name);


/* start muntyan's stuff */

#include <string.h>
#include <errno.h>
#include "mooutils/moo-mime.h"

#if G_BYTE_ORDER != G_LITTLE_ENDIAN && G_BYTE_ORDER != G_BIG_ENDIAN
#error G_BYTE_ORDER
#endif
#define XDG_LITTLE_ENDIAN (G_BYTE_ORDER == G_LITTLE_ENDIAN)

/* make xdgmime use glib */
#undef malloc
#undef realloc
#undef free
#undef strdup
#undef calloc
#define malloc g_try_malloc
#define realloc g_try_realloc
#define free g_free
#define strdup g_strdup
#define calloc(nmemb,size) g_malloc0 ((nmemb)*(size))

#undef _xdg_utf8_skip
#undef _xdg_utf8_to_ucs4
#undef _xdg_ucs4_to_lower
#undef _xdg_utf8_validate
#undef _xdg_get_base_name
#undef _xdg_utf8_next_char
#undef _xdg_utf8_char_size
#undef _xdg_convert_to_ucs4
#undef _xdg_reverse_ucs4

#define _xdg_utf8_to_ucs4	g_utf8_get_char
#define _xdg_ucs4_to_lower	g_unichar_tolower
#define _xdg_utf8_validate(s)	(g_utf8_validate(s, -1, NULL))
#define _xdg_utf8_next_char(p)	g_utf8_next_char(p)

inline static const char *
_xdg_get_base_name (const char *file_name)
{
  const char *base_name;

  if (file_name == NULL)
    return NULL;

  base_name = strrchr (file_name, '/');

  if (base_name == NULL)
    return file_name;
  else
    return base_name + 1;
}

inline static int
_xdg_mime_buffer_is_text (unsigned char *buffer,
			  int            len)
{
  const char *end;
  gunichar ch;

  if (!len || g_utf8_validate ((const char*) buffer, len, &end))
    return TRUE;

  ch = g_utf8_get_char_validated (end, len - (end - (const char*) buffer));

  return ch == (gunichar) -2;
}

inline static xdg_unichar_t *
_xdg_convert_to_ucs4 (const char *source, int *len)
{
  xdg_unichar_t *out;
  int i;
  const char *p;

  out = malloc (sizeof (xdg_unichar_t) * (strlen (source) + 1));

  p = source;
  i = 0;
  while (*p) 
    {
      out[i++] = _xdg_utf8_to_ucs4 (p);
      p = _xdg_utf8_next_char (p); 
    }
  out[i] = 0;
  *len = i;
 
  return out;
}

inline static void
_xdg_reverse_ucs4 (xdg_unichar_t *source, int len)
{
  xdg_unichar_t c;
  int i;

  for (i = 0; i < len - i - 1; i++) 
    {
      c = source[i]; 
      source[i] = source[len - i - 1];
      source[len - i - 1] = c;
    }
}

#define XDG_MIME_STAT  stat
#define XDG_MIME_FSTAT fstat

/* end muntyan's stuff */


#endif /* __XDG_MIME_INT_H__ */