author | hgs |
Tue, 02 Nov 2010 19:23:22 +0530 | |
changeset 79 | 564bc7b7ad27 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* -*- mode: C; c-file-style: "gnu" -*- */ |
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/* dbus-string-private.h String utility class (internal to D-Bus implementation) |
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* |
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* Copyright (C) 2002, 2003 Red Hat, Inc. |
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* Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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* Licensed under the Academic Free License version 2.1 |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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|
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#ifndef DBUS_STRING_PRIVATE_H |
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#define DBUS_STRING_PRIVATE_H |
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#ifndef __SYMBIAN32__ |
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#include <config.h> |
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#else |
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#include "config.h" |
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#endif |
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#include <dbus/dbus-memory.h> |
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#include <dbus/dbus-types.h> |
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#ifndef DBUS_CAN_USE_DBUS_STRING_PRIVATE |
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#error "Don't go including dbus-string-private.h for no good reason" |
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#endif |
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DBUS_BEGIN_DECLS |
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/** |
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* @brief Internals of DBusString. |
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* |
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* DBusString internals. DBusString is an opaque objects, it must be |
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* used via accessor functions. |
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*/ |
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typedef struct |
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{ |
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unsigned char *str; /**< String data, plus nul termination */ |
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int len; /**< Length without nul */ |
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int allocated; /**< Allocated size of data */ |
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int max_length; /**< Max length of this string, without nul byte */ |
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unsigned int constant : 1; /**< String data is not owned by DBusString */ |
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unsigned int locked : 1; /**< DBusString has been locked and can't be changed */ |
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unsigned int invalid : 1; /**< DBusString is invalid (e.g. already freed) */ |
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unsigned int align_offset : 3; /**< str - align_offset is the actual malloc block */ |
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} DBusRealString; |
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/** |
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* @defgroup DBusStringInternals DBusString implementation details |
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* @ingroup DBusInternals |
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* @brief DBusString implementation details |
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* |
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* The guts of DBusString. |
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* |
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* @{ |
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*/ |
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/** |
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* This is the maximum max length (and thus also the maximum length) |
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* of a DBusString |
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*/ |
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#define _DBUS_STRING_MAX_MAX_LENGTH (_DBUS_INT32_MAX - _DBUS_STRING_ALLOCATION_PADDING) |
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/** |
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* Checks a bunch of assertions about a string object |
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* |
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* @param real the DBusRealString |
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*/ |
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#define DBUS_GENERIC_STRING_PREAMBLE(real) _dbus_assert ((real) != NULL); _dbus_assert (!(real)->invalid); _dbus_assert ((real)->len >= 0); _dbus_assert ((real)->allocated >= 0); _dbus_assert ((real)->max_length >= 0); _dbus_assert ((real)->len <= ((real)->allocated - _DBUS_STRING_ALLOCATION_PADDING)); _dbus_assert ((real)->len <= (real)->max_length) |
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/** |
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* Checks assertions about a string object that needs to be |
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* modifiable - may not be locked or const. Also declares |
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* the "real" variable pointing to DBusRealString. |
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* @param str the string |
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*/ |
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#define DBUS_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \ |
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DBUS_GENERIC_STRING_PREAMBLE (real); \ |
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_dbus_assert (!(real)->constant); \ |
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_dbus_assert (!(real)->locked) |
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/** |
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* Checks assertions about a string object that may be locked but |
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* can't be const. i.e. a string object that we can free. Also |
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* declares the "real" variable pointing to DBusRealString. |
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* |
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* @param str the string |
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*/ |
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#define DBUS_LOCKED_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \ |
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DBUS_GENERIC_STRING_PREAMBLE (real); \ |
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_dbus_assert (!(real)->constant) |
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/** |
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* Checks assertions about a string that may be const or locked. Also |
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* declares the "real" variable pointing to DBusRealString. |
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* @param str the string. |
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*/ |
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#define DBUS_CONST_STRING_PREAMBLE(str) const DBusRealString *real = (DBusRealString*) str; \ |
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DBUS_GENERIC_STRING_PREAMBLE (real) |
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/** |
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* Checks for ASCII blank byte |
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* @param c the byte |
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*/ |
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#define DBUS_IS_ASCII_BLANK(c) ((c) == ' ' || (c) == '\t') |
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/** |
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* Checks for ASCII whitespace byte |
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* @param c the byte |
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*/ |
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#define DBUS_IS_ASCII_WHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r') |
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/** @} */ |
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DBUS_END_DECLS |
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#endif /* DBUS_STRING_PRIVATE_H */ |