ntar_int.h

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/*
 * Copyright (c) 2005, Condor Engineering, Inc. 
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright 
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the Company (Condor Engineering, Inc) nor the
 * names of its contributors may be used to endorse or promote products 
 * derived from this software without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 */

/*
 * Author: Gianluca Varenni <gianluca.varenni@gmail.com>
 */

#ifndef __NTAR_INT_H_2233343443h4h4437y3y4
#define __NTAR_INT_H_2233343443h4h4437y3y4

#include "ntar.h"

#include "ntar_debug.h"

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#ifdef WIN32
#include <io.h>
#endif

#include <fcntl.h>


#ifndef WIN32
#define stricmp strcasecmp
#endif

struct _ntar_file_handle;       /* Forward structure declaration to make the compiler happy. */
struct _ntar_section_handle;    /* Forward structure declaration to make the compiler happy. */
struct _ntar_plugin_data;       /* Forward structure declaration to make the compiler happy. */

typedef struct _ntar_read_iterator
{
#define NTAR_POS_NOT_DEFINED    ((ntar_foff)(-1))    
#define NTAR_BEGINNING_OF_FILE  ((ntar_foff)0)          
    ntar_foff  prev_pos;                   
    ntar_foff  curr_pos;                   
    ntar_foff  next_pos;                   
}
    ntar_read_iterator;

struct _ntar_block_handle
{
    ntar_file_handlers file_handlers;

    int byte_order;             

    ntar_foff block_start; 
    
    struct _ntar_section_handle *section_handle;    
    
    void *plugin_state;        
    
    ntar_option *options;    
    
    struct _ntar_plugin_data *plugin_data;  
    
    block_header bh;                

    int are_block_data_read;

    char* options_buffer;

    size_t  options_buffer_length;

    size_t  data_buffer_length;

    char* data_buffer;

    void *block_data;
    void *raw_data_buffer;
    size_t raw_data_buffer_length;
    size_t raw_data_buffer_start_options;
};

struct _ntar_section_handle
{
    ntar_file_handlers file_handlers;
    
    ntar_foff block_start; 
    
    block_header bh;

    section_header_block shb;

    ntar_option *options;

    struct _ntar_file_handle *file_handle;  

    int byte_order;             
    
    ntar_block_handle cache_block;   

    int block_opened;

    int header_written;   
    
    u_int32 shb_header_length;      
    
    ntar_read_iterator read_iterator;

    char* options_buffer;

    size_t  options_buffer_length;
    
    char* raw_options_buffer;

    size_t raw_options_buffer_length;

    int reached_end_of_section;

};

struct _ntar_file_handle
{
    int file_mode;

    int using_internal_handlers;

    ntar_file_handlers file_handlers;

    ntar_section_handle cache_section;   
    
    int section_opened;

    ntar_read_iterator read_iterator;

    block_header last_bh;
};


int reallocate_memory(void **buffer, size_t *buffer_size, size_t new_size);

int ntar_convert_errno(int local_errno);


int ntar_native_file_write(void *handle, void* buffer, size_t size);
int ntar_native_file_read(void *handle, void* buffer, size_t size, size_t *read_bytes);
int ntar_native_file_seek(void *handle, ntar_foff new_position, int origin, ntar_foff *old_position);
int ntar_native_file_close(ntar_file_handlers file_handlers);
int ntar_native_file_open(char *filename, char *flags, ntar_file_handlers *file_handlers);



#endif /*__NTAR_INT_H_2233343443h4h4437y3y4*/

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NTAR documentation. Copyright (c) 2004 - 2005 Condor Engineering, Inc. All rights reserved.