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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2010-2013 Richard Hughes <richard@hughsie.com>
*
* Licensed under the GNU Lesser General Public License Version 2.1
*
* 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 2.1 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* SECTION:cd-buffer
* @short_description: Routines to read and write LE and BE values to a data buffer.
*
* Functions to manipulate a raw data buffer.
*/
#include "config.h"
#include <string.h>
#include "cd-buffer.h"
/**
* cd_buffer_write_uint16_be:
* @buffer: the writable data buffer
* @value: the value to write
*
* Writes a native endian value into a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's big enough.
**/
void
cd_buffer_write_uint16_be (guint8 *buffer, guint16 value)
{
guint16 tmp;
tmp = GUINT16_TO_BE (value);
memcpy (buffer, &tmp, sizeof(tmp));
}
/**
* cd_buffer_write_uint16_le:
* @buffer: the writable data buffer
* @value: the value to write
*
* Writes a native endian value into a little endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's big enough.
**/
void
cd_buffer_write_uint16_le (guint8 *buffer, guint16 value)
{
guint16 tmp;
tmp = GUINT16_TO_LE (value);
memcpy (buffer, &tmp, sizeof(tmp));
}
/**
* cd_buffer_read_uint16_be:
* @buffer: the writable data buffer
*
* Reads a native endian value from a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's valid.
*
* Return value: the value to read.
**/
guint16
cd_buffer_read_uint16_be (const guint8 *buffer)
{
guint16 tmp;
memcpy (&tmp, buffer, sizeof(tmp));
return GUINT16_FROM_BE (tmp);
}
/**
* cd_buffer_read_uint16_le:
* @buffer: the writable data buffer
*
* Reads a native endian value from a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's valid.
*
* Return value: the value to read.
**/
guint16
cd_buffer_read_uint16_le (const guint8 *buffer)
{
guint16 tmp;
memcpy (&tmp, buffer, sizeof(tmp));
return GUINT16_FROM_LE (tmp);
}
/**
* cd_buffer_write_uint32_be:
* @buffer: the writable data buffer
* @value: the value to write
*
* Writes a native endian value into a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's big enough.
**/
void
cd_buffer_write_uint32_be (guint8 *buffer, guint32 value)
{
guint32 tmp;
tmp = GUINT32_TO_BE (value);
memcpy (buffer, &tmp, sizeof(tmp));
}
/**
* cd_buffer_write_uint32_le:
* @buffer: the writable data buffer
* @value: the value to write
*
* Writes a native endian value into a little endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's big enough.
**/
void
cd_buffer_write_uint32_le (guint8 *buffer, guint32 value)
{
guint32 tmp;
tmp = GUINT32_TO_LE (value);
memcpy (buffer, &tmp, sizeof(tmp));
}
/**
* cd_buffer_read_uint32_be:
* @buffer: the writable data buffer
*
* Reads a native endian value from a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's valid.
*
* Return value: the value to read.
**/
guint32
cd_buffer_read_uint32_be (const guint8 *buffer)
{
guint32 tmp;
memcpy (&tmp, buffer, sizeof(tmp));
return GUINT32_FROM_BE (tmp);
}
/**
* cd_buffer_read_uint32_le:
* @buffer: the writable data buffer
*
* Reads a native endian value from a big endian data buffer.
* NOTE: No validation is done on the buffer to ensure it's valid.
*
* Return value: the value to read.
**/
guint32
cd_buffer_read_uint32_le (const guint8 *buffer)
{
guint32 tmp;
memcpy (&tmp, buffer, sizeof(tmp));
return GUINT32_FROM_LE (tmp);
}
/**
* cd_buffer_debug:
* @buffer_kind: the debug mode, e.g %CD_BUFFER_KIND_REQUEST
* @data: the data of size @length
* @length: the size of data
*
* Prints some debugging of the request to the console.
**/
void
cd_buffer_debug (CdBufferKind buffer_kind,
const guint8 *data,
gsize length)
{
guint i;
if (buffer_kind == CD_BUFFER_KIND_REQUEST)
g_print ("%c[%dmrequest\n", 0x1B, 31);
else if (buffer_kind == CD_BUFFER_KIND_RESPONSE)
g_print ("%c[%dmresponse\n", 0x1B, 34);
for (i = 0; i < length; i++) {
if (i > 0 && i % 8 == 0)
g_print ("\n");
g_print ("%02x [%c]\t",
data[i],
g_ascii_isprint (data[i]) ? data[i] : '?');
}
g_print ("%c[%dm\n", 0x1B, 0);
}
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