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/* -*- C++ -*-
*
* NsaReader.cpp - Reader from a NSA archive
*
* Copyright (c) 2001-2010 Ogapee. All rights reserved.
*
* ogapee@aqua.dti2.ne.jp
*
* 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 "NsaReader.h"
#include <string.h>
#define NSA_ARCHIVE_NAME "arc"
#define NSA_ARCHIVE_NAME2 "arc%d"
NsaReader::NsaReader( int nsa_offset, char *path, const unsigned char *key_table )
:SarReader( path, key_table )
{
sar_flag = true;
this->nsa_offset = nsa_offset;
num_of_nsa_archives = 0;
if (key_table)
nsa_archive_ext = "___";
else
nsa_archive_ext = "nsa";
}
NsaReader::~NsaReader()
{
}
int NsaReader::open( char *nsa_path, int archive_type )
{
int i;
char archive_name[256], archive_name2[256];
if ( !SarReader::open( "arc.sar" ) ) return 0;
sar_flag = false;
if ( !nsa_path ) nsa_path = "";
sprintf( archive_name, "%s%s.%s", nsa_path, NSA_ARCHIVE_NAME, nsa_archive_ext );
if ( ( archive_info.file_handle = fopen( archive_name, "rb" ) ) == NULL ){
fprintf( stderr, "can't open file %s\n", archive_name );
return -1;
}
archive_info.file_name = new char[strlen(archive_name)+1];
memcpy(archive_info.file_name, archive_name, strlen(archive_name)+1);
readArchive( &archive_info, archive_type, nsa_offset );
for ( i=0 ; i<MAX_EXTRA_ARCHIVE ; i++ ){
sprintf( archive_name2, NSA_ARCHIVE_NAME2, i+1 );
sprintf( archive_name, "%s%s.%s", nsa_path, archive_name2, nsa_archive_ext );
if ( ( archive_info2[i].file_handle = fopen( archive_name, "rb" ) ) == NULL ){
return 0;
}
archive_info2[i].file_name = new char[strlen(archive_name2)+1];
memcpy(archive_info2[i].file_name, archive_name2, strlen(archive_name2)+1);
num_of_nsa_archives = i+1;
readArchive( &archive_info2[i], archive_type, nsa_offset );
}
return 0;
}
int NsaReader::openForConvert( char *nsa_name, int archive_type, int nsa_offset )
{
sar_flag = false;
if ( ( archive_info.file_handle = ::fopen( nsa_name, "rb" ) ) == NULL ){
fprintf( stderr, "can't open file %s\n", nsa_name );
return -1;
}
readArchive( &archive_info, archive_type, nsa_offset );
return 0;
}
int NsaReader::writeHeader( FILE *fp, int archive_type, int nsa_offset )
{
ArchiveInfo *ai = &archive_info;
return writeHeaderSub( ai, fp, archive_type, nsa_offset );
}
size_t NsaReader::putFile( FILE *fp, int no, size_t offset, size_t length, size_t original_length, int compression_type, bool modified_flag, unsigned char *buffer )
{
ArchiveInfo *ai = &archive_info;
return putFileSub( ai, fp, no, offset, length, original_length , compression_type, modified_flag, buffer );
}
const char *NsaReader::getArchiveName() const
{
return "nsa";
}
int NsaReader::getNumFiles(){
int total = archive_info.num_of_files, i;
for ( i=0 ; i<num_of_nsa_archives ; i++ ) total += archive_info2[i].num_of_files;
return total;
}
size_t NsaReader::getFileLengthSub( ArchiveInfo *ai, const char *file_name )
{
unsigned int i = getIndexFromFile( ai, file_name );
if ( i == ai->num_of_files ) return 0;
if ( ai->fi_list[i].original_length != 0 )
return ai->fi_list[i].original_length;
int type = ai->fi_list[i].compression_type;
if ( type == NO_COMPRESSION )
type = getRegisteredCompressionType( file_name );
if ( type == NBZ_COMPRESSION || type == SPB_COMPRESSION ) {
ai->fi_list[i].original_length = getDecompressedFileLength( type, ai->file_handle, ai->fi_list[i].offset );
}
return ai->fi_list[i].original_length;
}
size_t NsaReader::getFileLength( const char *file_name )
{
if ( sar_flag ) return SarReader::getFileLength( file_name );
size_t ret;
int i;
if ( ( ret = DirectReader::getFileLength( file_name ) ) ) return ret;
if ( ( ret = getFileLengthSub( &archive_info, file_name )) ) return ret;
for ( i=0 ; i<num_of_nsa_archives ; i++ ){
if ( (ret = getFileLengthSub( &archive_info2[i], file_name )) ) return ret;
}
return 0;
}
size_t NsaReader::getFile( const char *file_name, unsigned char *buffer, int *location )
{
size_t ret;
if ( sar_flag ) return SarReader::getFile( file_name, buffer, location );
if ( ( ret = DirectReader::getFile( file_name, buffer, location ) ) ) return ret;
if ( (ret = getFileSub( &archive_info, file_name, buffer )) ){
if ( location ) *location = ARCHIVE_TYPE_NSA;
return ret;
}
for ( int i=0 ; i<num_of_nsa_archives ; i++ ){
if ( (ret = getFileSub( &archive_info2[i], file_name, buffer )) ){
if ( location ) *location = ARCHIVE_TYPE_NSA;
return ret;
}
}
return 0;
}
struct NsaReader::FileInfo NsaReader::getFileByIndex( unsigned int index )
{
int i;
if ( index < archive_info.num_of_files ) return archive_info.fi_list[index];
index -= archive_info.num_of_files;
for ( i=0 ; i<num_of_nsa_archives ; i++ ){
if ( index < archive_info2[i].num_of_files ) return archive_info2[i].fi_list[index];
index -= archive_info2[i].num_of_files;
}
fprintf( stderr, "NsaReader::getFileByIndex Index %d is out of range\n", index );
return archive_info.fi_list[0];
}
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