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