C++ common::SaveFileManager类代码示例

SaveStateList SagaMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	char saveDesc[SAVE_TITLE_SIZE];
	Common::String pattern = target;
	pattern += ".s##";

	filenames = saveFileMan->listSavefiles(pattern);

	SaveStateList saveList;
	int slotNum = 0;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 2 digits of the filename, since they correspond to the save slot
		slotNum = atoi(file->c_str() + file->size() - 2);

		if (slotNum >= 0 && slotNum < MAX_SAVES) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				for (int i = 0; i < 3; i++)
					in->readUint32BE();
				in->read(saveDesc, SAVE_TITLE_SIZE);
				saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
				delete in;
			}
		}
	}

	// Sort saves based on slot number.
	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
	return saveList;
}

SaveStateList SwordMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	SaveStateList saveList;
	char saveName[40];

	Common::StringArray filenames = saveFileMan->listSavefiles("sword1.???");
	sort(filenames.begin(), filenames.end());   // Sort (hopefully ensuring we are sorted numerically..)

	int slotNum = 0;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 3 digits of the filename, since they correspond to the save slot
		slotNum = atoi(file->c_str() + file->size() - 3);

		if (slotNum >= 0 && slotNum <= 999) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				in->readUint32LE(); // header
				in->read(saveName, 40);
				saveList.push_back(SaveStateDescriptor(slotNum, saveName));
				delete in;
			}
		}
	}

	return saveList;
}

SaveStateList WageMetaEngine::listSaves(const char *target) const {
    const uint32 WAGEflag = MKTAG('W','A','G','E');
    Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
    Common::StringArray filenames;
    char saveDesc[31];
    Common::String pattern = target;
    pattern += ".###";

    filenames = saveFileMan->listSavefiles(pattern);

    SaveStateList saveList;
    for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
        // Obtain the last 3 digits of the filename, since they correspond to the save slot
        int slotNum = atoi(file->c_str() + file->size() - 3);

        if (slotNum >= 0 && slotNum <= 999) {
            Common::InSaveFile *in = saveFileMan->openForLoading(*file);
            if (in) {
                uint32 type = in->readUint32BE();
                if (type == WAGEflag)
                    in->read(saveDesc, 31);
                saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
                delete in;
            }
        }
    }

    // Sort saves based on slot number.
    Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
    return saveList;
}

SaveStateList SciMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String pattern = target;
	pattern += ".???";

	filenames = saveFileMan->listSavefiles(pattern);
	sort(filenames.begin(), filenames.end());	// Sort (hopefully ensuring we are sorted numerically..)

	SaveStateList saveList;
	int slotNum = 0;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 3 digits of the filename, since they correspond to the save slot
		slotNum = atoi(file->c_str() + file->size() - 3);

		if (slotNum >= 0 && slotNum <= 99) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				SavegameMetadata meta;
				if (!get_savegame_metadata(in, &meta)) {
					// invalid
					delete in;
					continue;
				}
				saveList.push_back(SaveStateDescriptor(slotNum, meta.name));
				delete in;
			}
		}
	}

	return saveList;
}

SaveStateList GrimMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String pattern = "grim*.gsv";

	filenames = saveFileMan->listSavefiles(pattern);

	SaveStateList saveList;
	char str[256];
	int32 strSize;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + 4);

		if (slotNum >= 0) {
			SaveGame *savedState = SaveGame::openForLoading(*file);
			if (savedState && savedState->isCompatible()) {
				savedState->beginSection('SUBS');
				strSize = savedState->readLESint32();
				savedState->read(str, strSize);
				savedState->endSection();
				saveList.push_back(SaveStateDescriptor(slotNum, str));
			}
			delete savedState;
		}
	}

	Common::sort(saveList.begin(), saveList.end(), cmpSave);
	return saveList;
}

SaveStateList AccessMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String saveDesc;
	Common::String pattern = Common::String::format("%s.0##", target);
	Access::AccessSavegameHeader header;

	filenames = saveFileMan->listSavefiles(pattern);
	sort(filenames.begin(), filenames.end());   // Sort to get the files in numerical order

	SaveStateList saveList;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		const char *ext = strrchr(file->c_str(), '.');
		int slot = ext ? atoi(ext + 1) : -1;

		if (slot >= 0 && slot < MAX_SAVES) {
			Common::InSaveFile *in = g_system->getSavefileManager()->openForLoading(*file);

			if (in) {
				Access::AccessEngine::readSavegameHeader(in, header);
				saveList.push_back(SaveStateDescriptor(slot, header._saveName));

				header._thumbnail->free();
				delete header._thumbnail;
				delete in;
			}
		}
	}

	return saveList;
}

SaveStateList LabMetaEngine::listSaves(const char *target) const {
    Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
    Lab::SaveGameHeader header;
    Common::String pattern = target;
    pattern += ".###";

    Common::StringArray filenames;
    filenames = saveFileMan->listSavefiles(pattern.c_str());
    Common::sort(filenames.begin(), filenames.end());   // Sort (hopefully ensuring we are sorted numerically..)*/

    SaveStateList saveList;

    for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
        // Obtain the last 3 digits of the filename, since they correspond to the save slot
        int slotNum = atoi(file->c_str() + file->size() - 3);

        if ((slotNum >= 0) && (slotNum <= 999)) {
            Common::InSaveFile *in = saveFileMan->openForLoading(file->c_str());
            if (in) {
                if (Lab::readSaveGameHeader(in, header))
                    saveList.push_back(SaveStateDescriptor(slotNum, header._descr.getDescription()));
                delete in;
            }
        }
    }

    return saveList;
}

void Lua_V1::TextFileGetLine() {
	char textBuf[1000];
	lua_Object nameObj = lua_getparam(1);
	lua_Object posObj = lua_getparam(2);
	Common::SeekableReadStream *file;

	if (lua_isnil(nameObj) || lua_isnil(posObj)) {
		lua_pushnil();
		return;
	}

	const char *filename = lua_getstring(nameObj);
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	file = saveFileMan->openForLoading(filename);
	if (!file) {
		lua_pushnil();
		return;
	}

	int pos = (int)lua_getnumber(posObj);
	file->seek(pos, SEEK_SET);
	memset(textBuf, 0, 1000);
	file->readLine(textBuf, 1000);
	delete file;

	lua_pushstring(textBuf);
}

SaveStateList TonyMetaEngine::listSaves(const char *target) const {
    Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
    Common::StringArray filenames;
    Common::String saveDesc;
    Common::String pattern = "tony.0??";

    filenames = saveFileMan->listSavefiles(pattern);
    sort(filenames.begin(), filenames.end());   // Sort (hopefully ensuring we are sorted numerically..)

    SaveStateList saveList;
    for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
        // Obtain the last 3 digits of the filename, since they correspond to the save slot
        int slotNum = atoi(file->c_str() + file->size() - 3);

        if (slotNum >= 0 && slotNum <= 999) {
            byte thumbnailData[160 * 120 * 2];
            Common::String saveName;
            byte difficulty;

            if (Tony::RMOptionScreen::loadThumbnailFromSaveState(slotNum, thumbnailData, saveName, difficulty)) {
                // Add the save name to the savegame list
                saveList.push_back(SaveStateDescriptor(slotNum, saveName));
            }
        }
    }

    return saveList;
}

SaveStateList FullpipeMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String pattern("fullpipe.s##");

	filenames = saveFileMan->listSavefiles(pattern);

	SaveStateList saveList;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 2 digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + file->size() - 2);

		if (slotNum >= 0 && slotNum <= getMaximumSaveSlot()) {
			Common::ScopedPtr<Common::InSaveFile> in(saveFileMan->openForLoading(*file));
			if (in) {
				Fullpipe::FullpipeSavegameHeader header;
				Fullpipe::readSavegameHeader(in.get(), header);

				SaveStateDescriptor desc;

				parseSavegameHeader(header, desc);

				desc.setSaveSlot(slotNum);

				saveList.push_back(desc);
			}
		}
	}

	// Sort saves based on slot number.
	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
	return saveList;
}

Common::InSaveFile *SaveConverter::openSave() const {
    if (_fileName.empty())
        return 0;

    Common::SaveFileManager *saveMan = g_system->getSavefileManager();
    return saveMan->openForLoading(_fileName);
}

reg_t kCheckSaveGame(EngineState *s, int funct_nr, int argc, reg_t *argv) {
	char *game_id = kernel_dereference_char_pointer(s, argv[0], 0);
	int savedir_nr = argv[1].toUint16();

	debug(3, "kCheckSaveGame(%s, %d)", game_id, savedir_nr);

	Common::Array<SavegameDesc> saves;
	listSavegames(saves);

	savedir_nr = saves[savedir_nr].id;

	if (savedir_nr > MAX_SAVEGAME_NR - 1) {
		return NULL_REG;
	}

	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
	Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(savedir_nr);
	Common::SeekableReadStream *in;
	if ((in = saveFileMan->openForLoading(filename))) {
		// found a savegame file

		SavegameMetadata meta;
		if (!get_savegame_metadata(in, &meta)) {
			// invalid
			s->r_acc = make_reg(0, 0);
		} else {
			s->r_acc = make_reg(0, 1);
		}
		delete in;
	} else {
		s->r_acc = make_reg(0, 1);
	}

	return s->r_acc;
}

void listSavegames(Common::Array<SavegameDesc> &saves) {
	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();

	// Load all saves
	Common::StringList saveNames = saveFileMan->listSavefiles(((SciEngine *)g_engine)->getSavegamePattern());

	for (Common::StringList::const_iterator iter = saveNames.begin(); iter != saveNames.end(); ++iter) {
		Common::String filename = *iter;
		Common::SeekableReadStream *in;
		if ((in = saveFileMan->openForLoading(filename))) {
			SavegameMetadata meta;
			if (!get_savegame_metadata(in, &meta)) {
				// invalid
				delete in;
				continue;
			}
			delete in;

			SavegameDesc desc;
			desc.id = strtol(filename.end() - 3, NULL, 10);
			desc.date = meta.savegame_date;
			desc.time = meta.savegame_time;
			debug(3, "Savegame in file %s ok, id %d", filename.c_str(), desc.id);

			saves.push_back(desc);
		}
	}

	// Sort the list by creation date of the saves
	qsort(saves.begin(), saves.size(), sizeof(SavegameDesc), _savegame_index_struct_compare);
}

SaveStateList AgiMetaEngine::listSaves(const char *target) const {
	const uint32 AGIflag = MKTAG('A','G','I',':');
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	char saveDesc[31];
	Common::String pattern = target;
	pattern += ".???";

	filenames = saveFileMan->listSavefiles(pattern);
	sort(filenames.begin(), filenames.end());	// Sort (hopefully ensuring we are sorted numerically..)

	SaveStateList saveList;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 3 digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + file->size() - 3);

		if (slotNum >= 0 && slotNum <= 999) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				uint32 type = in->readUint32BE();
				if (type == AGIflag)
					in->read(saveDesc, 31);
				saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
				delete in;
			}
		}
	}

	return saveList;
}

static byte *readSavegameThumbnail(const Common::String &filename, uint &fileSize, bool &isPNG) {
	byte *pFileData;
	Common::SaveFileManager *sfm = g_system->getSavefileManager();
	Common::InSaveFile *file = sfm->openForLoading(lastPathComponent(filename, '/'));
	if (!file)
		error("Save file \"%s\" could not be loaded.", filename.c_str());

	// Seek to the actual PNG image
	loadString(*file);		// Marker (BS25SAVEGAME)
	Common::String storedVersionID = loadString(*file);		// Version
	if (storedVersionID != "SCUMMVM1")
		loadString(*file);

	loadString(*file);		// Description
	uint32 compressedGamedataSize = atoi(loadString(*file).c_str());
	loadString(*file);		// Uncompressed game data size
	file->skip(compressedGamedataSize);	// Skip the game data and move to the thumbnail itself
	uint32 thumbnailStart = file->pos();

	fileSize = file->size() - thumbnailStart;

	// Check if the thumbnail is in our own format, or a PNG file.
	uint32 header = file->readUint32BE();
	isPNG = (header != MKTAG('S','C','R','N'));
	file->seek(-4, SEEK_CUR);

	pFileData = new byte[fileSize];
	file->read(pFileData, fileSize);
	delete file;

	return pFileData;
}