COMMON: Begin to merge some NE/PE code
The ID classes are now common to both. The files have been renamed to better illustrate their purpose.
This commit is contained in:
Matthew Hoops
parent
3a3fd9f009
commit
a2a0b13de2
10 changed files with 201 additions and 213 deletions
255
common/winexe_pe.cpp
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255
common/winexe_pe.cpp
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/debug.h"
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#include "common/file.h"
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#include "common/memstream.h"
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#include "common/str.h"
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#include "common/stream.h"
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#include "common/winexe_pe.h"
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namespace Common {
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PEResources::PEResources() {
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_exe = 0;
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}
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PEResources::~PEResources() {
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clear();
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}
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void PEResources::clear() {
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_sections.clear();
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_resources.clear();
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delete _exe; _exe = 0;
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}
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bool PEResources::loadFromEXE(const String &fileName) {
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if (fileName.empty())
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return false;
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File *file = new File();
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if (!file->open(fileName)) {
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delete file;
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return false;
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}
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return loadFromEXE(file);
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}
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bool PEResources::loadFromEXE(SeekableReadStream *stream) {
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clear();
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if (!stream)
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return false;
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if (stream->readUint16BE() != 'MZ')
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return false;
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stream->skip(58);
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uint32 peOffset = stream->readUint32LE();
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if (!peOffset || peOffset >= (uint32)stream->size())
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return false;
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stream->seek(peOffset);
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if (stream->readUint32BE() != MKID_BE('PE\0\0'))
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return false;
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stream->skip(2);
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uint16 sectionCount = stream->readUint16LE();
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stream->skip(12);
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uint16 optionalHeaderSize = stream->readUint16LE();
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stream->skip(optionalHeaderSize + 2);
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// Read in all the sections
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for (uint16 i = 0; i < sectionCount; i++) {
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char sectionName[9];
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stream->read(sectionName, 8);
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sectionName[8] = 0;
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Section section;
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stream->skip(4);
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section.virtualAddress = stream->readUint32LE();
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section.size = stream->readUint32LE();
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section.offset = stream->readUint32LE();
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stream->skip(16);
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_sections[sectionName] = section;
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}
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// Currently, we require loading a resource section
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if (!_sections.contains(".rsrc")) {
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clear();
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return false;
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}
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_exe = stream;
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Section &resSection = _sections[".rsrc"];
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parseResourceLevel(resSection, resSection.offset, 0);
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return true;
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}
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void PEResources::parseResourceLevel(Section §ion, uint32 offset, int level) {
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_exe->seek(offset + 12);
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uint16 namedEntryCount = _exe->readUint16LE();
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uint16 intEntryCount = _exe->readUint16LE();
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for (uint32 i = 0; i < namedEntryCount + intEntryCount; i++) {
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uint32 value = _exe->readUint32LE();
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WinResourceID id;
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if (value & 0x80000000) {
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value &= 0x7fffffff;
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uint32 startPos = _exe->pos();
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_exe->seek(section.offset + (value & 0x7fffffff));
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// Read in the name, truncating from unicode to ascii
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Common::String name;
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uint16 nameLength = _exe->readUint16LE();
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while (nameLength--)
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name += (char)(_exe->readUint16LE() & 0xff);
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_exe->seek(startPos);
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id = name;
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} else {
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id = value;
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}
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uint32 nextOffset = _exe->readUint32LE();
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uint32 lastOffset = _exe->pos();
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if (level == 0)
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_curType = id;
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else if (level == 1)
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_curName = id;
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else if (level == 2)
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_curLang = id;
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if (level < 2) {
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// Time to dive down further
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parseResourceLevel(section, section.offset + (nextOffset & 0x7fffffff), level + 1);
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} else {
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_exe->seek(section.offset + nextOffset);
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Resource resource;
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resource.offset = _exe->readUint32LE() + section.offset - section.virtualAddress;
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resource.size = _exe->readUint32LE();
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debug(4, "Found resource '%s' '%s' '%s' at %d of size %d", _curType.toString().c_str(),
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_curName.toString().c_str(), _curLang.toString().c_str(), resource.offset, resource.size);
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_resources[_curType][_curName][_curLang] = resource;
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}
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_exe->seek(lastOffset);
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}
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}
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const Array<WinResourceID> PEResources::getTypeList() const {
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Array<WinResourceID> array;
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if (!_exe)
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return array;
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for (TypeMap::const_iterator it = _resources.begin(); it != _resources.end(); it++)
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array.push_back(it->_key);
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return array;
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}
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const Array<WinResourceID> PEResources::getNameList(const WinResourceID &type) const {
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Array<WinResourceID> array;
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if (!_exe || !_resources.contains(type))
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return array;
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const NameMap &nameMap = _resources[type];
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for (NameMap::const_iterator it = nameMap.begin(); it != nameMap.end(); it++)
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array.push_back(it->_key);
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return array;
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}
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const Array<WinResourceID> PEResources::getLangList(const WinResourceID &type, const WinResourceID &name) const {
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Array<WinResourceID> array;
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if (!_exe || !_resources.contains(type))
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return array;
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const NameMap &nameMap = _resources[type];
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if (!nameMap.contains(name))
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return array;
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const LangMap &langMap = nameMap[name];
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for (LangMap::const_iterator it = langMap.begin(); it != langMap.end(); it++)
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array.push_back(it->_key);
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return array;
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}
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SeekableReadStream *PEResources::getResource(const WinResourceID &type, const WinResourceID &name) {
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Array<WinResourceID> langList = getLangList(type, name);
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if (langList.empty())
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return 0;
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const Resource &resource = _resources[type][name][langList[0]];
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_exe->seek(resource.offset);
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return _exe->readStream(resource.size);
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}
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SeekableReadStream *PEResources::getResource(const WinResourceID &type, const WinResourceID &name, const WinResourceID &lang) {
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if (!_exe || !_resources.contains(type))
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return 0;
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const NameMap &nameMap = _resources[type];
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if (!nameMap.contains(name))
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return 0;
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const LangMap &langMap = nameMap[name];
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if (!langMap.contains(lang))
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return 0;
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const Resource &resource = langMap[lang];
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_exe->seek(resource.offset);
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return _exe->readStream(resource.size);
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}
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} // End of namespace Common
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