C++ FSNode::getChild方法代码示例

bool ThemeEngine::themeConfigUsable(const Common::FSNode &node, Common::String &themeName) {
	Common::File stream;
	bool foundHeader = false;

	if (node.getName().matchString("*.zip", true) && !node.isDirectory()) {
		Common::Archive *zipArchive = Common::makeZipArchive(node);
		if (zipArchive && zipArchive->hasFile("THEMERC")) {
			// Open THEMERC from the ZIP file.
			stream.open("THEMERC", *zipArchive);
		}
		// Delete the ZIP archive again. Note: This only works because
		// stream.open() only uses ZipArchive::createReadStreamForMember,
		// and that in turn happens to read all the data for a given
		// archive member into a memory block. So there will be no dangling
		// reference to zipArchive anywhere. This could change if we
		// ever modify ZipArchive::createReadStreamForMember.
		delete zipArchive;
	} else if (node.isDirectory()) {
		Common::FSNode headerfile = node.getChild("THEMERC");
		if (!headerfile.exists() || !headerfile.isReadable() || headerfile.isDirectory())
			return false;
		stream.open(headerfile);
	}

	if (stream.isOpen()) {
		Common::String stxHeader = stream.readLine();
		foundHeader = themeConfigParseHeader(stxHeader, themeName);
	}

	return foundHeader;
}

bool BaseFileManager::initPaths() {
	// Removed: Config-based file-path choice.

	// package files paths
	const Common::FSNode gameData(ConfMan.get("path"));
	addPath(PATH_PACKAGE, gameData);

	Common::FSNode dataSubFolder = gameData.getChild("data");
	if (dataSubFolder.exists()) {
		addPath(PATH_PACKAGE, dataSubFolder);
	}
	Common::FSNode languageSubFolder = gameData.getChild("language");
	if (languageSubFolder.exists()) {
		addPath(PATH_PACKAGE, languageSubFolder);
	}
	return STATUS_OK;
}

// Parse a relative path in the game-folder, and if it exists, return a FSNode to it.
static Common::FSNode getNodeForRelativePath(const Common::String &filename) {
	// The filename can be an explicit path, thus we need to chop it up, expecting the path the game
	// specifies to follow the Windows-convention of folder\subfolder\file (absolute paths should not happen)

	// Absolute path: These should have been handled in openDiskFile.
	if (filename.contains(':')) {
		// So just return an invalid node.
		return Common::FSNode();
	}

	// Relative path:
	if (filename.contains('\\')) {
		Common::StringTokenizer path(filename, "\\");

		// Start traversing relative to the game-data-dir
		const Common::FSNode gameDataDir(ConfMan.get("path"));
		Common::FSNode curNode = gameDataDir;

		// Parse all path-elements
		while (!path.empty()) {
			// Get the next path-component by slicing on '\\'
			Common::String pathPart = path.nextToken();
			// Get the next FSNode in the chain, if it exists as a child from the previous.
			curNode = curNode.getChild(pathPart);
			if (!curNode.isReadable()) {
				// Return an invalid FSNode.
				return Common::FSNode();
			}
			// Following the comments in common/fs.h, anything not a directory is a file.
			if (!curNode.isDirectory()) {
				if (!path.empty()) {
					error("Relative path %s reached a file before the end of the path", filename.c_str());
				}
				return curNode;
			}
		}
	}
	// Return an invalid FSNode to mark that we didn't find the requested file.
	return Common::FSNode();
}