worldspawn/plugins/archivezip/archive.cpp

343 lines
9.3 KiB
C++

/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "idatastream.h"
#include "cmdlib.h"
#include "bytestreamutils.h"
#include "modulesystem.h"
#include "iarchive.h"
#include <algorithm>
#include "stream/filestream.h"
#include "container/array.h"
#include "archivelib.h"
#include "zlibstream.h"
class DeflatedArchiveFile : public ArchiveFile {
CopiedString m_name;
FileInputStream m_istream;
SubFileInputStream m_substream;
DeflatedInputStream m_zipstream;
FileInputStream::size_type m_size;
public:
typedef FileInputStream::size_type size_type;
typedef FileInputStream::position_type position_type;
DeflatedArchiveFile(const char *name, const char *archiveName, position_type position, size_type stream_size,
size_type file_size)
: m_name(name), m_istream(archiveName), m_substream(m_istream, position, stream_size),
m_zipstream(m_substream), m_size(file_size)
{
}
void release()
{
delete this;
}
size_type size() const
{
return m_size;
}
const char *getName() const
{
return m_name.c_str();
}
InputStream &getInputStream()
{
return m_zipstream;
}
};
class DeflatedArchiveTextFile : public ArchiveTextFile {
CopiedString m_name;
FileInputStream m_istream;
SubFileInputStream m_substream;
DeflatedInputStream m_zipstream;
BinaryToTextInputStream<DeflatedInputStream> m_textStream;
public:
typedef FileInputStream::size_type size_type;
typedef FileInputStream::position_type position_type;
DeflatedArchiveTextFile(const char *name, const char *archiveName, position_type position, size_type stream_size)
: m_name(name), m_istream(archiveName), m_substream(m_istream, position, stream_size),
m_zipstream(m_substream), m_textStream(m_zipstream)
{
}
void release()
{
delete this;
}
TextInputStream &getInputStream()
{
return m_textStream;
}
};
#include "pkzip.h"
#include <map>
#include "string/string.h"
#include "fs_filesystem.h"
class ZipArchive : public Archive {
class ZipRecord {
public:
enum ECompressionMode {
eStored,
eDeflated,
};
ZipRecord(unsigned int position, unsigned int compressed_size, unsigned int uncompressed_size,
ECompressionMode mode)
: m_position(position), m_stream_size(compressed_size), m_file_size(uncompressed_size), m_mode(mode)
{
}
unsigned int m_position;
unsigned int m_stream_size;
unsigned int m_file_size;
ECompressionMode m_mode;
};
typedef GenericFileSystem<ZipRecord> ZipFileSystem;
ZipFileSystem m_filesystem;
CopiedString m_name;
FileInputStream m_istream;
bool read_record()
{
zip_magic magic;
istream_read_zip_magic(m_istream, magic);
if (!(magic == zip_root_dirent_magic)) {
return false;
}
zip_version version_encoder;
istream_read_zip_version(m_istream, version_encoder);
zip_version version_extract;
istream_read_zip_version(m_istream, version_extract);
//unsigned short flags =
istream_read_int16_le(m_istream);
unsigned short compression_mode = istream_read_int16_le(m_istream);
if (compression_mode != Z_DEFLATED && compression_mode != 0) {
return false;
}
zip_dostime dostime;
istream_read_zip_dostime(m_istream, dostime);
//unsigned int crc32 =
istream_read_int32_le(m_istream);
unsigned int compressed_size = istream_read_uint32_le(m_istream);
unsigned int uncompressed_size = istream_read_uint32_le(m_istream);
unsigned int namelength = istream_read_uint16_le(m_istream);
unsigned short extras = istream_read_uint16_le(m_istream);
unsigned short comment = istream_read_uint16_le(m_istream);
//unsigned short diskstart =
istream_read_int16_le(m_istream);
//unsigned short filetype =
istream_read_int16_le(m_istream);
//unsigned int filemode =
istream_read_int32_le(m_istream);
unsigned int position = istream_read_int32_le(m_istream);
Array<char> filename(namelength + 1);
m_istream.read(reinterpret_cast<FileInputStream::byte_type *>( filename.data()), namelength);
filename[namelength] = '\0';
m_istream.seek(extras + comment, FileInputStream::cur);
if (path_is_directory(filename.data())) {
m_filesystem[filename.data()] = 0;
} else {
ZipFileSystem::entry_type &file = m_filesystem[filename.data()];
if (!file.is_directory()) {
globalOutputStream() << "Warning: zip archive " << makeQuoted(m_name.c_str())
<< " contains duplicated file: " << makeQuoted(filename.data()) << "\n";
} else {
file = new ZipRecord(position, compressed_size, uncompressed_size,
(compression_mode == Z_DEFLATED) ? ZipRecord::eDeflated : ZipRecord::eStored);
}
}
return true;
}
bool read_pkzip()
{
SeekableStream::position_type pos = pkzip_find_disk_trailer(m_istream);
if (pos != 0) {
zip_disk_trailer disk_trailer;
m_istream.seek(pos);
istream_read_zip_disk_trailer(m_istream, disk_trailer);
if (!(disk_trailer.z_magic == zip_disk_trailer_magic)) {
return false;
}
m_istream.seek(disk_trailer.z_rootseek);
for (unsigned int i = 0; i < disk_trailer.z_entries; ++i) {
if (!read_record()) {
return false;
}
}
return true;
}
return false;
}
public:
ZipArchive(const char *name)
: m_name(name), m_istream(name)
{
if (!m_istream.failed()) {
if (!read_pkzip()) {
globalErrorStream() << "ERROR: invalid zip-file " << makeQuoted(name) << '\n';
}
}
}
~ZipArchive()
{
for (ZipFileSystem::iterator i = m_filesystem.begin(); i != m_filesystem.end(); ++i) {
delete i->second.file();
}
}
bool failed()
{
return m_istream.failed();
}
void release()
{
delete this;
}
ArchiveFile *openFile(const char *name)
{
ZipFileSystem::iterator i = m_filesystem.find(name);
if (i != m_filesystem.end() && !i->second.is_directory()) {
ZipRecord *file = i->second.file();
m_istream.seek(file->m_position);
zip_file_header file_header;
istream_read_zip_file_header(m_istream, file_header);
if (file_header.z_magic != zip_file_header_magic) {
globalErrorStream() << "error reading zip file " << makeQuoted(m_name.c_str());
return 0;
}
switch (file->m_mode) {
case ZipRecord::eStored:
return StoredArchiveFile::create(name, m_name.c_str(), m_istream.tell(), file->m_stream_size,
file->m_file_size);
case ZipRecord::eDeflated:
return new DeflatedArchiveFile(name, m_name.c_str(), m_istream.tell(), file->m_stream_size,
file->m_file_size);
}
}
return 0;
}
ArchiveTextFile *openTextFile(const char *name)
{
ZipFileSystem::iterator i = m_filesystem.find(name);
if (i != m_filesystem.end() && !i->second.is_directory()) {
ZipRecord *file = i->second.file();
m_istream.seek(file->m_position);
zip_file_header file_header;
istream_read_zip_file_header(m_istream, file_header);
if (file_header.z_magic != zip_file_header_magic) {
globalErrorStream() << "error reading zip file " << makeQuoted(m_name.c_str());
return 0;
}
switch (file->m_mode) {
case ZipRecord::eStored:
return StoredArchiveTextFile::create(name, m_name.c_str(), m_istream.tell(), file->m_stream_size);
case ZipRecord::eDeflated:
return new DeflatedArchiveTextFile(name, m_name.c_str(), m_istream.tell(), file->m_stream_size);
}
}
return 0;
}
bool containsFile(const char *name)
{
ZipFileSystem::iterator i = m_filesystem.find(name);
return i != m_filesystem.end() && !i->second.is_directory();
}
void forEachFile(VisitorFunc visitor, const char *root)
{
m_filesystem.traverse(visitor, root);
}
};
Archive *OpenArchive(const char *name)
{
return new ZipArchive(name);
}
#if 0
class TestZip
{
class TestVisitor : public Archive::IVisitor
{
public:
void visit( const char* name ){
int bleh = 0;
}
};
public:
TestZip(){
testzip( "c:/quake3/baseq3/mapmedia.pk3", "textures/radiant/notex.tga" );
}
void testzip( const char* name, const char* filename ){
Archive* archive = OpenArchive( name );
ArchiveFile* file = archive->openFile( filename );
if ( file != 0 ) {
unsigned char buffer[4096];
std::size_t count = file->getInputStream().read( (InputStream::byte_type*)buffer, 4096 );
file->release();
}
TestVisitor visitor;
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFilesAndDirectories, 0 ), "" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFilesAndDirectories, 1 ), "" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFiles, 1 ), "" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eDirectories, 1 ), "" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFilesAndDirectories, 1 ), "textures" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFilesAndDirectories, 1 ), "textures/" );
archive->forEachFile( Archive::VisitorFunc( &visitor, Archive::eFilesAndDirectories, 2 ), "" );
archive->release();
}
};
TestZip g_TestZip;
#endif