dbus-string-private.h

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-string-private.h String utility class (internal to D-Bus implementation)
 *
 * Copyright (C) 2002, 2003  Red Hat, Inc.
 *
 * Licensed under the Academic Free License version 2.1
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */
 
#ifndef DBUS_STRING_PRIVATE_H
#define DBUS_STRING_PRIVATE_H
 
#include <dbus/dbus-internals.h>
#include <dbus/dbus-memory.h>
#include <dbus/dbus-types.h>
 
#ifndef DBUS_CAN_USE_DBUS_STRING_PRIVATE
#error "Don't go including dbus-string-private.h for no good reason"
#endif
 
DBUS_BEGIN_DECLS
 
typedef struct
{
  unsigned char *str;            
  int            len;            
  int            allocated;      
  unsigned int   constant : 1;   
  unsigned int   locked : 1;     
  unsigned int   valid : 1;      
  unsigned int   align_offset : 3; 
} DBusRealString;
 
_DBUS_STATIC_ASSERT (sizeof (DBusRealString) == sizeof (DBusString));
 
#define _DBUS_STRING_MAX_LENGTH (_DBUS_INT32_MAX - _DBUS_STRING_ALLOCATION_PADDING)
 
#define DBUS_GENERIC_STRING_PREAMBLE(real) \
  do { \
      (void) real; /* might be unused unless asserting */ \
      _dbus_assert ((real) != NULL); \
      _dbus_assert ((real)->valid); \
      _dbus_assert ((real)->len >= 0); \
      _dbus_assert ((real)->allocated >= 0); \
      _dbus_assert ((real)->len <= ((real)->allocated - _DBUS_STRING_ALLOCATION_PADDING)); \
      _dbus_assert ((real)->len <= _DBUS_STRING_MAX_LENGTH); \
  } while (0)
 
#define DBUS_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \
  DBUS_GENERIC_STRING_PREAMBLE (real);                                          \
  _dbus_assert (!(real)->constant);                                             \
  _dbus_assert (!(real)->locked)
 
#define DBUS_LOCKED_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \
  DBUS_GENERIC_STRING_PREAMBLE (real);                                                 \
  _dbus_assert (!(real)->constant)
 
#define DBUS_CONST_STRING_PREAMBLE(str) const DBusRealString *real = (DBusRealString*) str; \
  DBUS_GENERIC_STRING_PREAMBLE (real)
 
#define DBUS_IS_ASCII_BLANK(c) ((c) == ' ' || (c) == '\t')
 
#define DBUS_IS_ASCII_WHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r')
 
DBUS_END_DECLS
 
#endif /* DBUS_STRING_PRIVATE_H */