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author | 2010-11-01 18:39:58 +0100 | |
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committer | 2010-11-01 18:39:58 +0100 | |
commit | e0e7250cf34b03edb61195f0e3d28aeb85922372 (patch) | |
tree | 14cdb820cbd14fabe7cf68b73f340cb03d748604 /include/dbus-1/dbus/dbus-string-private.h | |
parent | 86c756deeb6effd9b29968a3649f8387c0b6d62a (diff) |
0.4.3-portable-build1
Diffstat (limited to 'include/dbus-1/dbus/dbus-string-private.h')
-rw-r--r-- | include/dbus-1/dbus/dbus-string-private.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/dbus-1/dbus/dbus-string-private.h b/include/dbus-1/dbus/dbus-string-private.h new file mode 100644 index 00000000..365d89a3 --- /dev/null +++ b/include/dbus-1/dbus/dbus-string-private.h @@ -0,0 +1,124 @@ +/* -*- 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-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 + +/** + * @brief Internals of DBusString. + * + * DBusString internals. DBusString is an opaque objects, it must be + * used via accessor functions. + */ +typedef struct +{ + unsigned char *str; /**< String data, plus nul termination */ + int len; /**< Length without nul */ + int allocated; /**< Allocated size of data */ + int max_length; /**< Max length of this string, without nul byte */ + unsigned int constant : 1; /**< String data is not owned by DBusString */ + unsigned int locked : 1; /**< DBusString has been locked and can't be changed */ + unsigned int invalid : 1; /**< DBusString is invalid (e.g. already freed) */ + unsigned int align_offset : 3; /**< str - align_offset is the actual malloc block */ +} DBusRealString; + + +/** + * @defgroup DBusStringInternals DBusString implementation details + * @ingroup DBusInternals + * @brief DBusString implementation details + * + * The guts of DBusString. + * + * @{ + */ + +/** + * This is the maximum max length (and thus also the maximum length) + * of a DBusString + */ +#define _DBUS_STRING_MAX_MAX_LENGTH (_DBUS_INT32_MAX - _DBUS_STRING_ALLOCATION_PADDING) + +/** + * Checks a bunch of assertions about a string object + * + * @param real the DBusRealString + */ +#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) + +/** + * Checks assertions about a string object that needs to be + * modifiable - may not be locked or const. Also declares + * the "real" variable pointing to DBusRealString. + * @param str the string + */ +#define DBUS_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \ + DBUS_GENERIC_STRING_PREAMBLE (real); \ + _dbus_assert (!(real)->constant); \ + _dbus_assert (!(real)->locked) + +/** + * Checks assertions about a string object that may be locked but + * can't be const. i.e. a string object that we can free. Also + * declares the "real" variable pointing to DBusRealString. + * + * @param str the string + */ +#define DBUS_LOCKED_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \ + DBUS_GENERIC_STRING_PREAMBLE (real); \ + _dbus_assert (!(real)->constant) + +/** + * Checks assertions about a string that may be const or locked. Also + * declares the "real" variable pointing to DBusRealString. + * @param str the string. + */ +#define DBUS_CONST_STRING_PREAMBLE(str) const DBusRealString *real = (DBusRealString*) str; \ + DBUS_GENERIC_STRING_PREAMBLE (real) + +/** + * Checks for ASCII blank byte + * @param c the byte + */ +#define DBUS_IS_ASCII_BLANK(c) ((c) == ' ' || (c) == '\t') + +/** + * Checks for ASCII whitespace byte + * @param c the byte + */ +#define DBUS_IS_ASCII_WHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r') + +/** @} */ + +DBUS_END_DECLS + +#endif /* DBUS_STRING_PRIVATE_H */ |