Finally got precompiled headers to work.

Now all C++ files need to #include <util/prec.hpp>
 That is why all .cpp files are touched by this commit

Many changes to installers and update checking:
     - the window is now called PackagesWindow, in a new source file
     - update checking is now independent from the PackagesWindow. For update checking only a list of package versions are needed (vector<PackageDependency>). This is much less information to download at each startup.
     - the list of available packages is now a list of available Installers, since an installer can contain multiple packages.
     - moved the logic of dependency checking etc. to data/installer
     - moved the actual installation to util/io/package_manager
     - moved directory iteration/creation logic to util/file_utils
     - added PackageDirectory: the local and global package directory now have their own object (was part of PackageManager)
     - added PackageVersion: for detecting if a package has been modified after it was installed.
     - added PackageDescription: description/header of a package. Basicly the same as what Packaged provides.
     - added DownloadableInstaller: where to find an insaller, what does it contain?
     - added InstallablePackage: brining it all together: installer, package, status, action.

Current status: the insaller is currently broken in a few places, more on that soon.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@792 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/file_utils.cpp

@@ -0,0 +1,134 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2007 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <util/file_utils.hpp>
+#include <wx/filename.h>
+#include <wx/dir.h>
+
+DECLARE_TYPEOF_COLLECTION(String);
+
+// ----------------------------------------------------------------------------- : File names
+
+String normalize_filename(const String& name) {
+	wxFileName fn(name);
+	fn.Normalize();
+	return fn.GetFullPath();
+}
+
+String normalize_internal_filename(const String& name) {
+	String ret;
+	FOR_EACH_CONST(c, name) {
+		if (c==_('\\')) ret += _('/');
+		else            ret += toLower(c);
+	}
+	return ret;
+}
+
+bool ignore_file(const String& name) {
+	// Files that are never part of a package,
+	// i.e. random stuff the OS file manager dumps without being asked
+	return name == _("Thumbs.db"); // winXP explorer thumbnails
+}
+
+// ----------------------------------------------------------------------------- : Directories
+
+bool create_parent_dirs(const String& file) {
+	for (size_t pos = file.find_first_of(_("\\/")) ;
+	     pos != String::npos ;
+	     pos = file.find_first_of(_("\\/"),pos+1)) {
+		String part = file.substr(0,pos);
+		if (!wxDirExists(part)) {
+			if (!wxMkdir(part)) return false;
+		}
+	}
+	return true;
+}
+
+// ----------------------------------------------------------------------------- : Removing
+
+class RecursiveDeleter : public wxDirTraverser {
+  public:
+	RecursiveDeleter(const String& start) {
+		to_delete.push_back(start);
+	}
+	~RecursiveDeleter() {
+		FOR_EACH_REVERSE(dir, to_delete) {
+			wxRmdir(dir);
+		}
+	}
+	
+	wxDirTraverseResult OnFile(const String& filename) {
+		if (!wxRemoveFile(filename))
+			handle_error(_("Cannot delete ") + filename + _(". ")
+				_("The remainder of the package has still been removed, if possible.")
+				_("Other packages may have been removed, including packages that this on is dependent on. Please remove manually."));
+		return wxDIR_CONTINUE;
+	}
+	wxDirTraverseResult OnDir(const String& dirname) {
+		to_delete.push_back(dirname);
+		return wxDIR_CONTINUE;
+	}
+  private:
+	vector<String> to_delete;
+};
+
+bool remove_file_or_dir(const String& name) {
+	if (wxFileExists(name)) {
+		return wxRemoveFile(name);
+	} else if (wxDirExists(name)) {
+		wxDir dir(name);
+		RecursiveDeleter rd(name);
+		dir.Traverse(rd);
+		return true;
+	} else {
+		return false;
+	}
+}
+
+// ----------------------------------------------------------------------------- : Renaming
+
+bool rename_file_or_dir(const String& from, const String& to) {
+	create_parent_dirs(to);
+	return wxRenameFile(from, to);
+}
+
+// ----------------------------------------------------------------------------- : Moving
+
+class IgnoredMover : public wxDirTraverser {
+  public:
+	IgnoredMover(const String& from, const String& to)
+		: from(from), to(to)
+	{}
+	wxDirTraverseResult OnFile(const String& filename) {
+		tryMove(filename);
+		return wxDIR_CONTINUE;
+	}
+	wxDirTraverseResult OnDir(const String& dirname) {
+		return tryMove(dirname) ? wxDIR_IGNORE : wxDIR_CONTINUE;
+	}
+  private:
+	String from, to;
+	bool tryMove(const String& from_path) {
+		if (is_substr(from_path,0,from)) {
+			String to_path = to + from_path.substr(from.size());
+			return rename_file_or_dir(from_path, to_path);
+		} else {
+			// This shouldn't happen
+			return false;
+		}
+	}
+};
+
+void move_ignored_files(const String& from_dir, const String& to_dir) {
+	if (wxDirExists(from_dir) && wxDirExists(to_dir)) {
+		wxDir dir(from_dir);
+		IgnoredMover im(from_dir, to_dir);
+		dir.Traverse(im);
+	}
+}