Renew the updater branch

Now with some actual consensus on what the updater will do!

mmc_updater/src/UpdateScript.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+class TiXmlElement;
+
+/** Represents a package containing one or more
+  * files for an update.
+  */
+class UpdateScriptPackage
+{
+	public:
+		UpdateScriptPackage()
+		: size(0)
+		{}
+
+		std::string name;
+		std::string sha1;
+		std::string source;
+		int size;
+
+		bool operator==(const UpdateScriptPackage& other) const
+		{
+			return name == other.name &&
+			       sha1 == other.sha1 &&
+			       source == other.source &&
+			       size == other.size;
+		}
+};
+
+/** Represents a file to be installed as part of an update. */
+class UpdateScriptFile
+{
+	public:
+		UpdateScriptFile()
+		: permissions(0)
+		, isMainBinary(false)
+		{}
+
+		std::string path;
+		std::string linkTarget;
+
+		/** The permissions for this file, specified
+		  * using the standard Unix mode_t values.
+		  */
+		int permissions;
+
+		bool isMainBinary;
+
+		bool operator==(const UpdateScriptFile& other) const
+		{
+			return path == other.path &&
+			       permissions == other.permissions &&
+			       linkTarget == other.linkTarget &&
+			       isMainBinary == other.isMainBinary;
+		}
+};
+
+/** Stores information about the packages and files included
+  * in an update, parsed from an XML file.
+  */
+class UpdateScript
+{
+	public:
+		UpdateScript();
+
+		/** Initialize this UpdateScript with the script stored
+		  * in the XML file at @p path.
+		  */
+		void parse(const std::string& path);
+
+		bool isValid() const;
+		const std::string path() const;
+		const std::vector<UpdateScriptFile>& filesToInstall() const;
+		const std::vector<std::string>& filesToUninstall() const;
+
+	private:
+		void parseUpdate(const TiXmlElement* element);
+		UpdateScriptFile parseFile(const TiXmlElement* element);
+
+		std::string m_path;
+		std::vector<UpdateScriptFile> m_filesToInstall;
+		std::vector<std::string> m_filesToUninstall;
+};
+