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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* libdatrie - Double-Array Trie Library
* Copyright (C) 2006 Theppitak Karoonboonyanan <theppitak@gmail.com>
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* fileutils.h - File utility functions
* Created: 2006-08-15
* Author: Theppitak Karoonboonyanan <theppitak@gmail.com>
*/
#include <string.h>
#include <stdlib.h>
#include "fileutils.h"
/* ==================== BEGIN IMPLEMENTATION PART ==================== */
/*--------------------------------*
* FUNCTIONS IMPLEMENTATIONS *
*--------------------------------*/
static int32
parse_int32_be (const uint8 *buff)
{
return (buff[0] << 24) | (buff[1] << 16) | (buff[2] << 8) | buff[3];
}
Bool
file_read_int32 (FILE *file, int32 *o_val)
{
uint8 buff[4];
if (fread (buff, 4, 1, file) == 1) {
*o_val = parse_int32_be (buff);
return TRUE;
}
return FALSE;
}
static void
serialize_int32_be (uint8 *buff, int32 val)
{
buff[0] = (val >> 24) & 0xff;
buff[1] = (val >> 16) & 0xff;
buff[2] = (val >> 8) & 0xff;
buff[3] = val & 0xff;
}
void
serialize_int32_be_incr (uint8 **buff, int32 val)
{
serialize_int32_be (*buff, val);
*buff += 4; /* don't sizeof! */
}
Bool
file_write_int32 (FILE *file, int32 val)
{
uint8 buff[4];
serialize_int32_be (buff, val);
return (fwrite (buff, 4, 1, file) == 1);
}
static int16
parse_int16_be (const uint8 *buff)
{
return (buff[0] << 8) | buff[1];
}
Bool
file_read_int16 (FILE *file, int16 *o_val)
{
uint8 buff[2];
if (fread (buff, 2, 1, file) == 1) {
*o_val = parse_int16_be (buff);
return TRUE;
}
return FALSE;
}
static void
serialize_int16_be (uint8 *buff, int16 val)
{
buff[0] = val >> 8;
buff[1] = val & 0xff;
}
void
serialize_int16_be_incr (uint8 **buff, int16 val)
{
serialize_int16_be (*buff, val);
*buff += 2; /* don't sizeof! */
}
Bool
file_write_int16 (FILE *file, int16 val)
{
uint8 buff[2];
serialize_int16_be (buff, val);
return (fwrite (buff, 2, 1, file) == 1);
}
Bool
file_read_int8 (FILE *file, int8 *o_val)
{
return (fread (o_val, sizeof (int8), 1, file) == 1);
}
Bool
file_write_int8 (FILE *file, int8 val)
{
return (fwrite (&val, sizeof (int8), 1, file) == 1);
}
Bool
file_read_chars (FILE *file, char *buff, int len)
{
return (fread (buff, sizeof (char), len, file) == len);
}
Bool
file_write_chars (FILE *file, const char *buff, int len)
{
return (fwrite (buff, sizeof (char), len, file) == len);
}
/*
vi:ts=4:ai:expandtab
*/
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