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384 lines
11 KiB
C++
384 lines
11 KiB
C++
/*
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OpenMW - The completely unofficial reimplementation of Morrowind
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Copyright (C) 2008-2010 Nicolay Korslund
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Email: < korslund@gmail.com >
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WWW: http://openmw.sourceforge.net/
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This file (cpp_bsaarchive.cpp) is part of the OpenMW package.
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OpenMW is distributed as free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 3, as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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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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version 3 along with this program. If not, see
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http://www.gnu.org/licenses/ .
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*/
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#include "bsa_archive.hpp"
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#include <boost/filesystem.hpp>
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#include <OgreFileSystem.h>
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#include <OgreArchive.h>
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#include <OgreArchiveFactory.h>
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#include <OgreArchiveManager.h>
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#include "bsa_file.hpp"
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#include "../files/constrainedfiledatastream.hpp"
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using namespace Ogre;
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static bool fsstrict = false;
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static char strict_normalize_char(char ch)
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{
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return ch == '\\' ? '/' : ch;
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}
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static char nonstrict_normalize_char(char ch)
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{
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return ch == '\\' ? '/' : std::tolower(ch);
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}
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template<typename T1, typename T2>
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static std::string normalize_path(T1 begin, T2 end)
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{
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std::string normalized;
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normalized.reserve(std::distance(begin, end));
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char (*normalize_char)(char) = fsstrict ? &strict_normalize_char : &nonstrict_normalize_char;
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std::transform(begin, end, std::back_inserter(normalized), normalize_char);
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return normalized;
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}
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/// An OGRE Archive wrapping a BSAFile archive
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class DirArchive: public Ogre::Archive
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{
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typedef std::map <std::string, std::string> index;
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index mIndex;
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index::const_iterator lookup_filename (std::string const & filename) const
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{
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std::string normalized = normalize_path (filename.begin (), filename.end ());
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return mIndex.find (normalized);
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}
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public:
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DirArchive(const String& name)
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: Archive(name, "Dir")
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{
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typedef boost::filesystem::recursive_directory_iterator directory_iterator;
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directory_iterator end;
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size_t prefix = name.size ();
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if (name.size () > 0 && name [prefix - 1] != '\\' && name [prefix - 1] != '/')
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++prefix;
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for (directory_iterator i (name); i != end; ++i)
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{
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if(boost::filesystem::is_directory (*i))
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continue;
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std::string proper = i->path ().string ();
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std::string searchable = normalize_path (proper.begin () + prefix, proper.end ());
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mIndex.insert (std::make_pair (searchable, proper));
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}
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}
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bool isCaseSensitive() const { return fsstrict; }
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// The archive is loaded in the constructor, and never unloaded.
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void load() {}
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void unload() {}
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DataStreamPtr open(const String& filename, bool readonly = true) const
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{
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index::const_iterator i = lookup_filename (filename);
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if (i == mIndex.end ())
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{
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std::ostringstream os;
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os << "The file '" << filename << "' could not be found.";
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throw std::runtime_error (os.str ());
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}
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return openConstrainedFileDataStream (i->second.c_str ());
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}
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StringVectorPtr list(bool recursive = true, bool dirs = false)
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{
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return find ("*", recursive, dirs);
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}
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FileInfoListPtr listFileInfo(bool recursive = true, bool dirs = false)
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{
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return findFileInfo ("*", recursive, dirs);
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}
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StringVectorPtr find(const String& pattern, bool recursive = true,
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bool dirs = false)
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{
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std::string normalizedPattern = normalize_path(pattern.begin(), pattern.end());
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StringVectorPtr ptr = StringVectorPtr(new StringVector());
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for(index::const_iterator iter = mIndex.begin();iter != mIndex.end();++iter)
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{
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if(Ogre::StringUtil::match(iter->first, normalizedPattern) ||
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(recursive && Ogre::StringUtil::match(iter->first, "*/"+normalizedPattern)))
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ptr->push_back(iter->first);
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}
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return ptr;
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}
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bool exists(const String& filename)
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{
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return lookup_filename(filename) != mIndex.end ();
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}
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time_t getModifiedTime(const String&) { return 0; }
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FileInfoListPtr findFileInfo(const String& pattern, bool recursive = true,
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bool dirs = false) const
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{
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std::string normalizedPattern = normalize_path(pattern.begin(), pattern.end());
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FileInfoListPtr ptr = FileInfoListPtr(new FileInfoList());
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index::const_iterator i = mIndex.find(normalizedPattern);
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if(i != mIndex.end())
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{
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std::string::size_type pt = i->first.rfind('/');
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if(pt == std::string::npos)
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pt = 0;
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FileInfo fi;
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fi.archive = const_cast<DirArchive*>(this);
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fi.path = i->first.substr(0, pt);
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fi.filename = i->first.substr((i->first[pt]=='/') ? pt+1 : pt);
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fi.compressedSize = fi.uncompressedSize = 0;
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ptr->push_back(fi);
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}
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else
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{
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for(index::const_iterator iter = mIndex.begin();iter != mIndex.end();++iter)
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{
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if(Ogre::StringUtil::match(iter->first, normalizedPattern) ||
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(recursive && Ogre::StringUtil::match(iter->first, "*/"+normalizedPattern)))
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{
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std::string::size_type pt = iter->first.rfind('/');
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if(pt == std::string::npos)
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pt = 0;
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FileInfo fi;
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fi.archive = const_cast<DirArchive*>(this);
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fi.path = iter->first.substr(0, pt);
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fi.filename = iter->first.substr((iter->first[pt]=='/') ? pt+1 : pt);
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fi.compressedSize = fi.uncompressedSize = 0;
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ptr->push_back(fi);
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}
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}
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}
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return ptr;
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}
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};
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class BSAArchive : public Archive
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{
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Bsa::BSAFile arc;
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static const char *extractFilename(const Bsa::BSAFile::FileStruct &entry)
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{
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return entry.name;
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}
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public:
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BSAArchive(const String& name)
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: Archive(name, "BSA")
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{ arc.open(name); }
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bool isCaseSensitive() const { return false; }
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// The archive is loaded in the constructor, and never unloaded.
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void load() {}
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void unload() {}
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DataStreamPtr open(const String& filename, bool readonly = true) const
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{
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// Get a non-const reference to arc. This is a hack and it's all
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// OGRE's fault. You should NOT expect an open() command not to
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// have any side effects on the archive, and hence this function
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// should not have been declared const in the first place.
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Bsa::BSAFile *narc = const_cast<Bsa::BSAFile*>(&arc);
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// Open the file
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return narc->getFile(filename.c_str());
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}
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bool exists(const String& filename) {
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return arc.exists(filename.c_str());
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}
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time_t getModifiedTime(const String&) { return 0; }
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// This is never called as far as I can see.
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StringVectorPtr list(bool recursive = true, bool dirs = false)
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{
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return find ("*", recursive, dirs);
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}
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// Also never called.
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FileInfoListPtr listFileInfo(bool recursive = true, bool dirs = false)
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{
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return findFileInfo ("*", recursive, dirs);
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}
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StringVectorPtr find(const String& pattern, bool recursive = true,
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bool dirs = false)
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{
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std::string normalizedPattern = normalize_path(pattern.begin(), pattern.end());
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const Bsa::BSAFile::FileList &filelist = arc.getList();
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StringVectorPtr ptr = StringVectorPtr(new StringVector());
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for(Bsa::BSAFile::FileList::const_iterator iter = filelist.begin();iter != filelist.end();++iter)
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{
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std::string ent = normalize_path(iter->name, iter->name+std::strlen(iter->name));
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if(Ogre::StringUtil::match(ent, normalizedPattern) ||
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(recursive && Ogre::StringUtil::match(ent, "*/"+normalizedPattern)))
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ptr->push_back(iter->name);
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}
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return ptr;
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}
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FileInfoListPtr findFileInfo(const String& pattern, bool recursive = true,
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bool dirs = false) const
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{
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std::string normalizedPattern = normalize_path(pattern.begin(), pattern.end());
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FileInfoListPtr ptr = FileInfoListPtr(new FileInfoList());
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const Bsa::BSAFile::FileList &filelist = arc.getList();
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for(Bsa::BSAFile::FileList::const_iterator iter = filelist.begin();iter != filelist.end();++iter)
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{
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std::string ent = normalize_path(iter->name, iter->name+std::strlen(iter->name));
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if(Ogre::StringUtil::match(ent, normalizedPattern) ||
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(recursive && Ogre::StringUtil::match(ent, "*/"+normalizedPattern)))
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{
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std::string::size_type pt = ent.rfind('/');
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if(pt == std::string::npos)
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pt = 0;
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FileInfo fi;
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fi.archive = const_cast<BSAArchive*>(this);
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fi.path = std::string(iter->name, pt);
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fi.filename = std::string(iter->name + ((ent[pt]=='/') ? pt+1 : pt));
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fi.compressedSize = fi.uncompressedSize = iter->fileSize;
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ptr->push_back(fi);
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}
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}
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return ptr;
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}
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};
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// An archive factory for BSA archives
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class BSAArchiveFactory : public ArchiveFactory
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{
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public:
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const String& getType() const
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{
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static String name = "BSA";
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return name;
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}
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Archive *createInstance( const String& name )
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{
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return new BSAArchive(name);
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}
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virtual Archive* createInstance(const String& name, bool readOnly)
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{
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return new BSAArchive(name);
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}
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void destroyInstance( Archive* arch) { delete arch; }
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};
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class DirArchiveFactory : public ArchiveFactory
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{
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public:
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const String& getType() const
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{
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static String name = "Dir";
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return name;
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}
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Archive *createInstance( const String& name )
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{
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return new DirArchive(name);
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}
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virtual Archive* createInstance(const String& name, bool readOnly)
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{
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return new DirArchive(name);
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}
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void destroyInstance( Archive* arch) { delete arch; }
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};
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static bool init = false;
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static bool init2 = false;
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static void insertBSAFactory()
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{
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if(!init)
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{
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ArchiveManager::getSingleton().addArchiveFactory( new BSAArchiveFactory );
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init = true;
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}
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}
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static void insertDirFactory()
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{
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if(!init2)
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{
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ArchiveManager::getSingleton().addArchiveFactory( new DirArchiveFactory );
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init2 = true;
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}
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}
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namespace Bsa
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{
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// The function below is the only publicly exposed part of this file
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void addBSA(const std::string& name, const std::string& group)
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{
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insertBSAFactory();
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ResourceGroupManager::getSingleton().
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addResourceLocation(name, "BSA", group, true);
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}
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void addDir(const std::string& name, const bool& fs, const std::string& group)
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{
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fsstrict = fs;
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insertDirFactory();
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ResourceGroupManager::getSingleton().
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addResourceLocation(name, "Dir", group, true);
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}
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}
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