--- /dev/null
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* dbus-marshal.c Marshalling routines
+ *
+ * Copyright (C) 2002 CodeFactory AB
+ *
+ * Licensed under the Academic Free License version 1.2
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "dbus-marshal.h"
+#include "dbus-internals.h"
+
+
+/* This alignment thing is from ORBit2 */
+/* Align a value upward to a boundary, expressed as a number of bytes.
+ E.g. align to an 8-byte boundary with argument of 8. */
+
+/*
+ * (this + boundary - 1)
+ * &
+ * ~(boundary - 1)
+ */
+
+#define DBUS_ALIGN_VALUE(this, boundary) \
+ (( ((unsigned long)(this)) + (((unsigned long)(boundary)) -1)) & (~(((unsigned long)(boundary))-1)))
+
+#define DBUS_ALIGN_ADDRESS(this, boundary) \
+ ((void*)DBUS_ALIGN_VALUE(this, boundary))
+
+/* from ORBit */
+static void
+swap_bytes (unsigned char *data,
+ unsigned int len)
+{
+ unsigned char *p1 = data;
+ unsigned char *p2 = data + len - 1;
+
+ while (p1 < p2)
+ {
+ unsigned char tmp = *p1;
+ *p1 = *p2;
+ *p2 = tmp;
+
+ --p2;
+ ++p1;
+ }
+}
+
+dbus_bool_t
+_dbus_marshal_double (DBusString *str,
+ int byte_order,
+ double value)
+{
+ if (!_dbus_string_set_length (str,
+ DBUS_ALIGN_VALUE (_dbus_string_get_length (str),
+ sizeof (double))))
+ return FALSE;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&value, sizeof (double));
+
+ return _dbus_string_append_len (str, (const char *)&value, sizeof (double));
+}
+
+dbus_bool_t
+_dbus_marshal_int32 (DBusString *str,
+ int byte_order,
+ dbus_int32_t value)
+{
+ if (!_dbus_string_set_length (str,
+ DBUS_ALIGN_VALUE (_dbus_string_get_length (str),
+ sizeof (dbus_int32_t))))
+ return FALSE;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&value, sizeof (dbus_int32_t));
+
+ return _dbus_string_append_len (str, (const char *)&value, sizeof (dbus_int32_t));
+}
+
+dbus_bool_t
+_dbus_marshal_uint32 (DBusString *str,
+ int byte_order,
+ dbus_uint32_t value)
+{
+ if (!_dbus_string_set_length (str,
+ DBUS_ALIGN_VALUE (_dbus_string_get_length (str),
+ sizeof (dbus_uint32_t))))
+ return FALSE;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&value, sizeof (dbus_uint32_t));
+
+ return _dbus_string_append_len (str, (const char *)&value, sizeof (dbus_uint32_t));
+}
+
+
+
+double
+_dbus_demarshal_double (DBusString *str,
+ int byte_order,
+ int start)
+{
+ double retval;
+ const char *buffer;
+
+ _dbus_string_get_const_data_len (str, &buffer, start, sizeof (double));
+
+ retval = *(double *)buffer;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&retval, sizeof (double));
+
+ return retval;
+}
+
+dbus_int32_t
+_dbus_demarshal_int32 (DBusString *str,
+ int byte_order,
+ int start)
+{
+ dbus_int32_t retval;
+ const char *buffer;
+
+ _dbus_string_get_const_data_len (str, &buffer, start, sizeof (dbus_int32_t));
+
+ retval = *(dbus_int32_t *)buffer;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&retval, sizeof (dbus_int32_t));
+
+ return retval;
+}
+
+dbus_uint32_t
+_dbus_demarshal_uint32 (DBusString *str,
+ int byte_order,
+ int start)
+{
+ dbus_uint32_t retval;
+ const char *buffer;
+
+ _dbus_string_get_const_data_len (str, &buffer, start, sizeof (dbus_uint32_t));
+
+ retval = *(dbus_uint32_t *)buffer;
+
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ swap_bytes ((unsigned char *)&retval, sizeof (dbus_uint32_t));
+
+ return retval;
+}
+
+/** @} */
+
+#ifdef DBUS_BUILD_TESTS
+#include "dbus-test.h"
+#include <stdio.h>
+
+dbus_bool_t
+_dbus_marshal_test (void)
+{
+ DBusString str;
+ int pos = 0;
+
+ if (!_dbus_string_init (&str, _DBUS_INT_MAX))
+ _dbus_assert_not_reached ("failed to init string");
+
+
+ /* Marshal doubles */
+ if (!_dbus_marshal_double (&str, DBUS_BIG_ENDIAN, 3.14))
+ _dbus_assert_not_reached ("could not marshal double value");
+ _dbus_assert (_dbus_demarshal_double (&str, DBUS_BIG_ENDIAN, pos) == 3.14);
+ pos += 8;
+
+ if (!_dbus_marshal_double (&str, DBUS_LITTLE_ENDIAN, 3.14))
+ _dbus_assert_not_reached ("could not marshal double value");
+ _dbus_assert (_dbus_demarshal_double (&str, DBUS_LITTLE_ENDIAN, pos) == 3.14);
+ pos += 8;
+
+ /* Marshal signed integers */
+ if (!_dbus_marshal_int32 (&str, DBUS_BIG_ENDIAN, -12345678))
+ _dbus_assert_not_reached ("could not marshal signed integer value");
+ _dbus_assert (_dbus_demarshal_int32 (&str, DBUS_BIG_ENDIAN, pos) == -12345678);
+ pos += 4;
+
+ if (!_dbus_marshal_int32 (&str, DBUS_LITTLE_ENDIAN, -12345678))
+ _dbus_assert_not_reached ("could not marshal signed integer value");
+ _dbus_assert (_dbus_demarshal_int32 (&str, DBUS_LITTLE_ENDIAN, pos) == -12345678);
+ pos += 4;
+
+ /* Marshal unsigned integers */
+ if (!_dbus_marshal_uint32 (&str, DBUS_LITTLE_ENDIAN, 0x12345678))
+ _dbus_assert_not_reached ("could not marshal signed integer value");
+ _dbus_assert (_dbus_demarshal_uint32 (&str, DBUS_LITTLE_ENDIAN, pos) == 0x12345678);
+ pos += 4;
+
+ _dbus_string_free (&str);
+
+ return TRUE;
+}
+
+#endif /* DBUS_BUILD_TESTS */
--- /dev/null
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* dbus-marshal.h Marshalling routines
+ *
+ * Copyright (C) 2002 CodeFactory AB
+ *
+ * Licensed under the Academic Free License version 1.2
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef DBUS_MARSHAL_H
+#define DBUS_MARSHAL_H
+
+#include <dbus/dbus-protocol.h>
+#include <dbus/dbus-types.h>
+#include <dbus/dbus-string.h>
+
+#ifdef WORDS_BIGENDIAN
+#define DBUS_COMPILER_BYTE_ORDER DBUS_LITTLE_ENDIAN
+#else
+#define DBUS_COMPILER_BYTE_ORDER DBUS_BIG_ENDIAN
+#endif
+
+dbus_bool_t _dbus_marshal_double (DBusString *str,
+ int byte_order,
+ double value);
+dbus_bool_t _dbus_marshal_int32 (DBusString *str,
+ int byte_order,
+ dbus_int32_t value);
+dbus_bool_t _dbus_marshal_uint32 (DBusString *str,
+ int byte_order,
+ dbus_uint32_t value);
+
+double _dbus_demarshal_double (DBusString *str,
+ int byte_order,
+ int start);
+dbus_int32_t _dbus_demarshal_int32 (DBusString *str,
+ int byte_order,
+ int start);
+dbus_uint32_t _dbus_demarshal_uint32 (DBusString *str,
+ int byte_order,
+ int start);
+
+
+
+
+
+
+#endif /* DBUS_PROTOCOL_H */
--- /dev/null
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* dbus-protocol.h D-Bus protocol constants
+ *
+ * Copyright (C) 2002 CodeFactory AB
+ *
+ * Licensed under the Academic Free License version 1.2
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef DBUS_PROTOCOL_H
+#define DBUS_PROTOCOL_H
+
+/* Don't include anything in here from anywhere else. It's
+ * intended for use by any random library.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Message byte order */
+#define DBUS_LITTLE_ENDIAN ('l') /* LSB first */
+#define DBUS_BIG_ENDIAN ('B') /* MSB first */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DBUS_PROTOCOL_H */
projects / platform / upstream / dbus.git / commitdiff