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NsaReader.cpp
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NsaReader.cpp
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/* -*- C++ -*-
*
* NsaReader.cpp - Reader from a NSA archive
*
* Copyright (c) 2001-2008 Ogapee. All rights reserved.
* (original ONScripter, of which this is a fork).
*
*
* Copyright (c) 2007-2010 "Uncle" Mion Sonozaki
*
*
* 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, see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// Modified by Mion, December 2009, to support NS2 archives and allow
// creating new archives via nsamake and ns2make
#include "NsaReader.h"
#include <cstdio>
#include <string.h>
#define NSA_ARCHIVE_NAME "arc"
#define NSA_ARCHIVE_NAME2 "arc%d"
NsaReader::NsaReader( PathProvider &provider, int nsaoffset, const unsigned char *key_table )
:SarReader( provider, key_table )
{
sar_flag = true;
nsa_offset = nsaoffset;
num_of_nsa_archives = num_of_ns2_archives = 0;
if (key_table)
nsa_archive_ext = "___";
else
nsa_archive_ext = "nsa";
ns2_archive_ext = "ns2";
}
NsaReader::~NsaReader()
{
}
#ifndef TOOLS_BUILD
int NsaReader::open( const char *nsa_path )
{
const DirPaths paths = DirPaths(nsa_path);
return processArchives(paths);
}
int NsaReader::processArchives( const PathProvider &provider )
{
int i,j,k,n,nd;
FILE *fp;
char archive_name[256], archive_name2[256];
if ( !SarReader::open( "arc.sar" ) ) {
sar_flag = true;
}
else {
sar_flag = false;
}
const PathProvider *nsa_path = &provider;
i = j = -1;
n = nd = 0;
while ((i<MAX_EXTRA_ARCHIVE) && (n<archive_path->get_num_paths())) {
if (j < 0) {
sprintf( archive_name, "%s%s.%s", nsa_path->get_path(nd), NSA_ARCHIVE_NAME, nsa_archive_ext );
sprintf(archive_name2, "%s%s", archive_path->get_path(n), archive_name);
} else {
sprintf( archive_name2, NSA_ARCHIVE_NAME2, j+1 );
sprintf( archive_name, "%s%s.%s", nsa_path->get_path(nd), archive_name2, nsa_archive_ext );
sprintf(archive_name2, "%s%s", archive_path->get_path(n), archive_name);
}
fp = std::fopen(archive_name2, "rb");
if (fp != NULL) {
//printf("Found archive %s\n", archive_name2); fflush(stdout);
if (i < 0) {
archive_info_nsa.file_handle = fp;
archive_info_nsa.file_name = new char[strlen(archive_name2)+1];
strcpy(archive_info_nsa.file_name, archive_name2);
readArchive( &archive_info_nsa, ARCHIVE_TYPE_NSA, nsa_offset );
} else {
archive_info2[i].file_handle = fp;
archive_info2[i].file_name = new char[strlen(archive_name2)+1];
strcpy(archive_info2[i].file_name, archive_name2);
readArchive( &archive_info2[i], ARCHIVE_TYPE_NSA, nsa_offset );
}
i++;
j++;
} else {
j = -1;
nd++;
if (nd >= nsa_path->get_num_paths()) {
nd = 0;
n++;
}
}
}
k = 0;
n = nd = 0;
while ((k<MAX_NS2_ARCHIVE) && (n<archive_path->get_num_paths())) {
sprintf( archive_name, "%s00.%s", nsa_path->get_path(nd), ns2_archive_ext );
sprintf(archive_name2, "%s%s", archive_path->get_path(n), archive_name);
fp = std::fopen(archive_name2, "rb");
if (fp != NULL) {
fclose(fp);
for (j=MAX_NS2_ARCHIVE_NUM; (j>=0) && (k<MAX_NS2_ARCHIVE); j--) {
sprintf( archive_name, "%s%02d.%s", nsa_path->get_path(nd), j, ns2_archive_ext );
sprintf(archive_name2, "%s%s", archive_path->get_path(n), archive_name);
fp = std::fopen(archive_name2, "rb");
if (fp == NULL) {
if (j == 0) break;
} else {
archive_info_ns2[k].file_handle = fp;
archive_info_ns2[k].file_name = new char[strlen(archive_name2)+1];
strcpy(archive_info_ns2[k].file_name, archive_name2);
readArchive( &archive_info_ns2[k], ARCHIVE_TYPE_NS2 );
k++;
}
}
}
nd++;
if (nd > nsa_path->get_num_paths()) {
nd = 0;
n++;
}
}
if ((i < 0) && (k < 0)) {
// didn't find any (main) archive files
fprintf( stderr, "can't open nsa archive file %s.%s ", NSA_ARCHIVE_NAME, nsa_archive_ext );
fprintf( stderr, "or ns2 archive file 00.%s ", ns2_archive_ext );
return -1;
} else {
num_of_nsa_archives = i+1;
num_of_ns2_archives = k;
return 0;
}
}
#else //def TOOLS_BUILD
NsaReader::ArchiveInfo* NsaReader::openForCreate( const char *nsa_name, int /*archive_type*/, int nsaoffset )
{
sar_flag = false;
nsa_offset = nsaoffset;
if ( ( archive_info_nsa.file_handle = ::fopen( nsa_name, "wb" ) ) == NULL ){
fprintf( stderr, "can't open file %s\n", nsa_name );
return NULL;
}
return &archive_info_nsa;
}
int NsaReader::openForConvert( const char *nsa_name, int archive_type, int nsaoffset )
{
sar_flag = false;
nsa_offset = nsaoffset;
if ( ( archive_info_nsa.file_handle = ::fopen( nsa_name, "rb" ) ) == NULL ){
fprintf( stderr, "can't open file %s\n", nsa_name );
return -1;
}
return readArchive( &archive_info_nsa, archive_type, nsa_offset );
}
int NsaReader::writeHeader( FILE *fp, int archive_type, int nsaoffset )
{
ArchiveInfo *ai = &archive_info_nsa;
return writeHeaderSub( ai, fp, archive_type, nsaoffset );
}
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_nsa;
return putFileSub( ai, fp, no, offset, length, original_length , compression_type, modified_flag, buffer );
}
#endif //TOOLS_BUILD
const char *NsaReader::getArchiveName() const
{
return "nsa";
}
int NsaReader::getNumFiles(){
int i;
int total = archive_info.num_of_files; // start with sar files, if any
total += archive_info_nsa.num_of_files; // add in the arc.nsa files
for ( i=0 ; i<num_of_nsa_archives-1 ; i++ ) total += archive_info2[i].num_of_files; // add in the arc?.nsa files
for ( i=0 ; i<num_of_ns2_archives ; i++ ) total += archive_info_ns2[i].num_of_files; // add in the ##.ns2 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 )
{
size_t ret;
int i;
#ifndef TOOLS_BUILD
// direct read
if ( ( ret = DirectReader::getFileLength( file_name ) ) ) return ret;
#endif
// ns2 read
for ( i=0 ; i<num_of_ns2_archives ; i++ ){
if ( (ret = getFileLengthSub( &archive_info_ns2[i], file_name )) ) return ret;
}
// nsa read
if ( ( ret = getFileLengthSub( &archive_info_nsa, file_name )) ) return ret;
// nsa? read
for ( i=0 ; i<num_of_nsa_archives-1 ; i++ ){
if ( (ret = getFileLengthSub( &archive_info2[i], file_name )) ) return ret;
}
// sar read
if ( sar_flag ) return SarReader::getFileLength( file_name );
return 0;
}
size_t NsaReader::getFile( const char *file_name, unsigned char *buffer, int *location )
{
size_t ret;
// direct read
if ( ( ret = DirectReader::getFile( file_name, buffer, location ) ) ) return ret;
// ns2 read
for ( int i=0 ; i<num_of_ns2_archives ; i++ ){
if ( (ret = getFileSub( &archive_info_ns2[i], file_name, buffer )) ){
if ( location ) *location = ARCHIVE_TYPE_NS2;
return ret;
}
}
// nsa read
if ( (ret = getFileSub( &archive_info_nsa, file_name, buffer )) ){
if ( location ) *location = ARCHIVE_TYPE_NSA;
return ret;
}
// nsa? read
for ( int i=0 ; i<num_of_nsa_archives-1 ; i++ ){
if ( (ret = getFileSub( &archive_info2[i], file_name, buffer )) ){
if ( location ) *location = ARCHIVE_TYPE_NSA;
return ret;
}
}
// sar read
if ( sar_flag ) return SarReader::getFile( file_name, buffer, location );
return 0;
}
struct NsaReader::FileInfo NsaReader::getFileByIndex( unsigned int index )
{
int i;
for ( i=0 ; i<num_of_ns2_archives ; i++ ){
if ( index < archive_info_ns2[i].num_of_files ) return archive_info_ns2[i].fi_list[index];
index -= archive_info_ns2[i].num_of_files;
}
if ( index < archive_info_nsa.num_of_files ) return archive_info_nsa.fi_list[index];
index -= archive_info_nsa.num_of_files;
for ( i=0 ; i<num_of_nsa_archives-1 ; 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];
}