Initial revision

svn path=/trunk/; revision=1786

11 files changed, 2847 insertions, 0 deletions

diff --git a/filter/ChangeLog b/filter/ChangeLog
new file mode 100644
index 0000000000..aa6d977034
--- /dev/null
+++ b/filter/ChangeLog
@@ -0,0 +1,4 @@
+2000-02-14  NotZed  <notzed@helixcode.com>
+
+	* Initial import.
+
diff --git a/filter/Makefile b/filter/Makefile
new file mode 100644
index 0000000000..2527224874
--- /dev/null
+++ b/filter/Makefile
@@ -0,0 +1,11 @@
+
+OBJS = filter-arg-types.o filter-arg.o filter-xml.o filter-sexp.o filter-driver.o
+SRCS = filter-arg-types.c filter-arg.c filter-xml.c filter-sexp.c filter-driver.c
+
+CFLAGS = `gnome-config --cflags xml gnome gtk gtkhtml gnomeui` -g -I../camel -I .. -I../libibex
+LDFLAGS = `gnome-config --libs xml gnome gtk gtkhtml gnomeui` -L ../camel/.libs -lcamel
+
+all: filter-driver
+
+filter-driver: $(OBJS)
+
diff --git a/filter/filter-arg-types.c b/filter/filter-arg-types.c
new file mode 100644
index 0000000000..5b046d9ea6
--- /dev/null
+++ b/filter/filter-arg-types.c
@@ -0,0 +1,393 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  Implementations of the filter-arg types.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "filter-arg-types.h"
+
+/* ********************************************************************** */
+/*                               Address                                  */
+/* ********************************************************************** */
+
+static void filter_arg_address_class_init (FilterArgAddressClass *class);
+static void filter_arg_address_init       (FilterArgAddress      *gspaper);
+
+static FilterArg *parent_class;
+
+guint
+filter_arg_address_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"FilterArgAddress",
+			sizeof (FilterArgAddress),
+			sizeof (FilterArgAddressClass),
+			(GtkClassInitFunc) filter_arg_address_class_init,
+			(GtkObjectInitFunc) filter_arg_address_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+		
+		type = gtk_type_unique (filter_arg_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+static void
+arg_address_write_html(FilterArg *argin, GtkHTML *html, GtkHTMLStreamHandle *stream)
+{
+	FilterArgAddress *arg = (FilterArgAddress *)argin;
+	/* empty */
+}
+
+static void
+arg_address_write_text(FilterArg *argin, GString *string)
+{
+	FilterArgAddress *arg = (FilterArgAddress *)argin;
+	GList *l;
+	struct filter_arg_address *a;
+
+	l = argin->values;
+	if (l == NULL) {
+		g_string_append(string, "email address");
+	}
+	while (l) {
+		a = l->data;
+		g_string_append(string, a->name);
+		if (l->next) {
+			g_string_append(string, ", ");
+		}
+		l = g_list_next(l);
+	}
+}
+
+static void
+arg_address_edit_values(FilterArg *arg)
+{
+	printf("edit it!\n");
+}
+
+static xmlNodePtr
+arg_address_values_get_xml(FilterArg *argin)
+{
+	xmlNodePtr value;
+	FilterArgAddress *arg = (FilterArgAddress *)argin;
+	GList *l;
+	struct filter_arg_address *a;
+
+	/* hmm, perhaps this overhead should be in FilterArg, and this function just returns the base node?? */
+	value = xmlNewNode(NULL, "optionvalue");
+	xmlSetProp(value, "name", argin->name);
+
+	l = argin->values;
+	while (l) {
+		xmlNodePtr cur;
+
+		a = l->data;
+
+		cur = xmlNewChild(value, NULL, "address", NULL);
+		if (a->name)
+			xmlSetProp(cur, "name", a->name);
+		if (a->email)
+			xmlSetProp(cur, "email", a->email);
+		l = g_list_next(l);
+	}
+
+	return value;
+}
+
+static void
+arg_address_values_add_xml(FilterArg *arg, xmlNodePtr node)
+{
+	xmlNodePtr n;
+
+	n = node->childs;
+	while (n) {
+		if (!strcmp(n->name, "address")) {
+			filter_arg_address_add(arg, xmlGetProp(n, "name"), xmlGetProp(n, "email"));
+		} else {
+			g_warning("Loading address from xml, wrong node encountered: %s\n", n->name);
+		}
+		n = n->next;
+	}
+}
+
+/* the search string is just the raw email address */
+static char *
+arg_address_get_value_as_string(FilterArg *argin, void *data)
+{
+	FilterArgAddress *arg = (FilterArgAddress *)argin;
+	struct filter_arg_address *a = (struct filter_arg_address *)data;
+
+	if (a->email == NULL
+	    || a->email[0] == '\0') {
+		if (a->name == NULL
+		    || a->name[0] == '\0')
+			return "";
+		return a->name;
+	} else
+		return a->email;
+}
+
+static void
+arg_address_free_value(FilterArg *arg, struct filter_arg_address *a)
+{
+	g_free(a->name);
+	g_free(a->email);
+	g_free(a);
+}
+
+static void
+filter_arg_address_class_init (FilterArgAddressClass *class)
+{
+	GtkObjectClass *object_class;
+
+	object_class = (GtkObjectClass *) class;
+	if (parent_class == NULL)
+		parent_class = gtk_type_class (gtk_object_get_type ());
+
+	class->parent_class.write_html = arg_address_write_html;
+	class->parent_class.write_text = arg_address_write_text;
+	class->parent_class.edit_values = arg_address_edit_values;
+	class->parent_class.free_value = arg_address_free_value;
+
+	class->parent_class.values_get_xml = arg_address_values_get_xml;
+	class->parent_class.values_add_xml = arg_address_values_add_xml;
+
+	class->parent_class.get_value_as_string = arg_address_get_value_as_string;
+}
+
+static void
+filter_arg_address_init (FilterArgAddress *arg)
+{
+	arg->arg.values = NULL;
+}
+
+/**
+ * filter_arg_address_new:
+ *
+ * Create a new FilterArgAddress widget.
+ * 
+ * Return value: A new FilterArgAddress widget.
+ **/
+FilterArg *
+filter_arg_address_new (char *name)
+{
+	FilterArg *a = FILTER_ARG ( gtk_type_new (filter_arg_address_get_type ()));
+	a->name = g_strdup(name);
+	return a;
+}
+
+void
+filter_arg_address_add(FilterArg *arg, char *name, char *email)
+{
+	struct filter_arg_address *a;
+
+	a = g_malloc0(sizeof(*a));
+
+	a->name = g_strdup(name);
+	a->email = g_strdup(email);
+
+	filter_arg_add(arg, a);
+}
+
+void
+filter_arg_address_remove(FilterArg *arg, char *name, char *email)
+{
+
+}
+
+/* ********************************************************************** */
+/*                               Folder                                   */
+/* ********************************************************************** */
+
+
+static void filter_arg_folder_class_init (FilterArgFolderClass *class);
+static void filter_arg_folder_init       (FilterArgFolder      *gspaper);
+
+static FilterArg *parent_class;
+
+guint
+filter_arg_folder_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"FilterArgFolder",
+			sizeof (FilterArgFolder),
+			sizeof (FilterArgFolderClass),
+			(GtkClassInitFunc) filter_arg_folder_class_init,
+			(GtkObjectInitFunc) filter_arg_folder_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+		
+		type = gtk_type_unique (filter_arg_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+static void
+arg_folder_write_html(FilterArg *argin, GtkHTML *html, GtkHTMLStreamHandle *stream)
+{
+	FilterArgFolder *arg = (FilterArgFolder *)argin;
+	/* empty */
+}
+
+static void
+arg_folder_write_text(FilterArg *argin, GString *string)
+{
+	FilterArgFolder *arg = (FilterArgFolder *)argin;
+	GList *l;
+	char *a;
+
+	l = argin->values;
+	if (l == NULL) {
+		g_string_append(string, "folder");
+	}
+	while (l) {
+		a = l->data;
+		g_string_append(string, a);
+		if (l->next) {
+			g_string_append(string, ", ");
+		}
+		l = g_list_next(l);
+	}
+}
+
+static void
+arg_folder_edit_values(FilterArg *arg)
+{
+	printf("edit it!\n");
+}
+
+static xmlNodePtr
+arg_folder_values_get_xml(FilterArg *argin)
+{
+	xmlNodePtr value;
+	FilterArgFolder *arg = (FilterArgFolder *)argin;
+	GList *l;
+	char *a;
+
+	value = xmlNewNode(NULL, "optionvalue");
+	xmlSetProp(value, "name", argin->name);
+
+	l = argin->values;
+	while (l) {
+		xmlNodePtr cur;
+
+		a = l->data;
+
+		cur = xmlNewChild(value, NULL, "folder", NULL);
+		if (a)
+			xmlSetProp(cur, "folder", a);
+		l = g_list_next(l);
+	}
+
+	return value;
+}
+
+static void
+arg_folder_values_add_xml(FilterArg *arg, xmlNodePtr node)
+{
+	xmlNodePtr n;
+
+	n = node->childs;
+	while (n) {
+		if (!strcmp(n->name, "folder")) {
+			filter_arg_folder_add(arg, xmlGetProp(n, "folder"));
+		} else {
+			g_warning("Loading folders from xml, wrong node encountered: %s\n", n->name);
+		}
+		n = n->next;
+	}
+}
+
+static char *
+arg_folder_get_value_as_string(FilterArg *argin, void *data)
+{
+	FilterArgFolder *arg = (FilterArgFolder *)argin;
+	char *a = (char *)data;
+
+	return a;
+}
+
+static void
+arg_folder_free_value(FilterArg *arg, void *a)
+{
+	g_free(a);
+}
+
+static void
+filter_arg_folder_class_init (FilterArgFolderClass *class)
+{
+	GtkObjectClass *object_class;
+	
+	object_class = (GtkObjectClass *) class;
+	if (parent_class == NULL)
+		parent_class = gtk_type_class (gtk_object_get_type ());
+
+	class->parent_class.write_html = arg_folder_write_html;
+	class->parent_class.write_text = arg_folder_write_text;
+	class->parent_class.edit_values = arg_folder_edit_values;
+	class->parent_class.free_value = arg_folder_free_value;
+
+	class->parent_class.values_get_xml = arg_folder_values_get_xml;
+	class->parent_class.values_add_xml = arg_folder_values_add_xml;
+}
+
+static void
+filter_arg_folder_init (FilterArgFolder *arg)
+{
+	arg->arg.values = NULL;
+}
+
+/**
+ * filter_arg_folder_new:
+ *
+ * Create a new FilterArgFolder widget.
+ * 
+ * Return value: A new FilterArgFolder widget.
+ **/
+FilterArg *
+filter_arg_folder_new (char *name)
+{
+	FilterArg *a = FILTER_ARG ( gtk_type_new (filter_arg_folder_get_type ()));
+	a->name = g_strdup(name);
+	return a;
+}
+
+
+void
+filter_arg_folder_add(FilterArg *arg, char *name)
+{
+	filter_arg_add(arg, g_strdup(name));
+}
+
+void
+filter_arg_folder_remove(FilterArg *arg, char *name)
+{
+	/* do it */
+}
diff --git a/filter/filter-arg-types.h b/filter/filter-arg-types.h
new file mode 100644
index 0000000000..26ee280a55
--- /dev/null
+++ b/filter/filter-arg-types.h
@@ -0,0 +1,75 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  Implementations of the filter-args.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _FILTER_ARG_TYPES_H
+#define _FILTER_ARG_TYPES_H
+
+#include "filter-arg.h"
+
+/* An Address */
+#define FILTER_ARG_ADDRESS(obj)         GTK_CHECK_CAST (obj, filter_arg_address_get_type (), FilterArgAddress)
+#define FILTER_ARG_ADDRESS_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, filter_arg_address_get_type (), FilterArgAddressClass)
+#define IS_FILTER_ARG_ADDRESS(obj)      GTK_CHECK_TYPE (obj, filter_arg_address_get_type ())
+
+typedef struct _FilterArgAddress      FilterArgAddress;
+typedef struct _FilterArgAddressClass FilterArgAddressClass;
+
+struct _FilterArgAddress {
+	FilterArg arg;
+};
+
+struct _FilterArgAddressClass {
+	FilterArgClass parent_class;
+};
+
+struct filter_arg_address {
+	char *name;
+	char *email;
+};
+
+guint		 filter_arg_address_get_type	(void);
+FilterArg	*filter_arg_address_new	(char *name);
+void             filter_arg_address_add(FilterArg *, char *name, char *email);
+void             filter_arg_address_remove(FilterArg *, char *name, char *email);
+
+/* A Folder */
+#define FILTER_ARG_FOLDER(obj)         GTK_CHECK_CAST (obj, filter_arg_folder_get_type (), FilterArgFolder)
+#define FILTER_ARG_FOLDER_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, filter_arg_folder_get_type (), FilterArgFolderClass)
+#define IS_FILTER_ARG_FOLDER(obj)      GTK_CHECK_TYPE (obj, filter_arg_folder_get_type ())
+
+typedef struct _FilterArgFolder      FilterArgFolder;
+typedef struct _FilterArgFolderClass FilterArgFolderClass;
+
+struct _FilterArgFolder {
+	FilterArg arg;
+};
+
+struct _FilterArgFolderClass {
+	FilterArgClass parent_class;
+};
+
+guint		 filter_arg_folder_get_type	(void);
+FilterArg	*filter_arg_folder_new	(char *name);
+void             filter_arg_folder_add(FilterArg *, char *name);
+void             filter_arg_folder_remove(FilterArg *, char *name);
+
+#endif /* ! _FILTER_ARG_TYPES_H */
diff --git a/filter/filter-arg.c b/filter/filter-arg.c
new file mode 100644
index 0000000000..44dc90471e
--- /dev/null
+++ b/filter/filter-arg.c
@@ -0,0 +1,217 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  Abstract filter argument class.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "filter-arg.h"
+
+
+static void filter_arg_class_init (FilterArgClass *class);
+static void filter_arg_init       (FilterArg      *gspaper);
+
+static GtkObjectClass *parent_class;
+
+enum {
+	CHANGED,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+guint
+filter_arg_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"FilterArg",
+			sizeof (FilterArg),
+			sizeof (FilterArgClass),
+			(GtkClassInitFunc) filter_arg_class_init,
+			(GtkObjectInitFunc) filter_arg_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+		
+		type = gtk_type_unique (gtk_object_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+static void
+write_html_nothing(FilterArg *arg, GtkHTML *html, GtkHTMLStreamHandle *stream)
+{
+	/* empty */
+}
+
+static void
+write_text_nothing(FilterArg *arg, GString *string)
+{
+	/* empty */
+}
+
+static void
+edit_values_nothing(FilterArg *arg)
+{
+	/* empty */
+}
+
+static void
+free_value_nothing(FilterArg *arg, void *v)
+{
+	/* empty */
+}
+
+static gint
+compare_pointers(gpointer a, gpointer b)
+{
+	return a==b;
+}
+
+static void
+filter_arg_class_init (FilterArgClass *class)
+{
+	GtkObjectClass *object_class;
+	
+	object_class = (GtkObjectClass *) class;
+	parent_class = gtk_type_class (gtk_object_get_type ());
+
+	class->write_html = write_html_nothing;
+	class->write_text = write_text_nothing;
+	class->edit_values = edit_values_nothing;
+	class->free_value = free_value_nothing;
+	
+	signals[CHANGED] =
+		gtk_signal_new ("changed",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (FilterArgClass, changed),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+	gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
+}
+
+static void
+filter_arg_init (FilterArg *arg)
+{
+	arg->values = NULL;
+}
+
+/**
+ * filter_arg_new:
+ *
+ * Create a new FilterArg widget.
+ * 
+ * Return value: A new FilterArg widget.
+ **/
+FilterArg *
+filter_arg_new (char *name)
+{
+	FilterArg *a = FILTER_ARG ( gtk_type_new (filter_arg_get_type ()));
+	if (name)
+		a->name = g_strdup(name);
+	return a;
+}
+
+void
+filter_arg_add(FilterArg *arg, void *v)
+{
+	arg->values = g_list_append(arg->values, v);
+	gtk_signal_emit(GTK_OBJECT(arg), signals[CHANGED]);
+}
+
+void
+filter_arg_remove(FilterArg *arg, void *v)
+{
+	arg->values = g_list_remove(arg->values, v);
+	((FilterArgClass *)(arg->object.klass))->free_value(arg, v);
+	gtk_signal_emit(GTK_OBJECT(arg), signals[CHANGED]);
+}
+
+void
+filter_arg_write_html(FilterArg *arg, GtkHTML *html, GtkHTMLStreamHandle *stream)
+{
+	((FilterArgClass *)(arg->object.klass))->write_html(arg, html, stream);
+}
+void
+filter_arg_write_text(FilterArg *arg, GString *string)
+{
+	((FilterArgClass *)(arg->object.klass))->write_text(arg, string);
+}
+void
+filter_arg_edit_values(FilterArg *arg)
+{
+	((FilterArgClass *)(arg->object.klass))->edit_values(arg);
+}
+
+xmlNodePtr
+filter_arg_values_get_xml(FilterArg *arg)
+{
+	return ((FilterArgClass *)(arg->object.klass))->values_get_xml(arg);
+}
+void
+filter_arg_values_add_xml(FilterArg *arg, xmlNodePtr node)
+{
+	((FilterArgClass *)(arg->object.klass))->values_add_xml(arg, node);
+}
+
+/* returns the number of args in the arg list */
+int
+filter_arg_get_count(FilterArg *arg)
+{
+	int count=0;
+	GList *l;
+
+	for (l = arg->values;l;l=g_list_next(l))
+		count++;
+	return count;
+}
+
+void *
+filter_arg_get_value(FilterArg *arg, int index)
+{
+	int count=0;
+	GList *l;
+
+	for (l = arg->values;l && count<index;l=g_list_next(l))
+		count++;
+	if (l)
+		return l->data;
+	return NULL;
+}
+
+char *
+filter_arg_get_value_as_string(FilterArg *arg, int index)
+{
+	int count=0;
+	GList *l;
+	void *data;
+
+	data = filter_arg_get_value(arg, index);
+	if (data) {
+		return ((FilterArgClass *)(arg->object.klass))->get_value_as_string(arg, data);
+	} else {
+		return "";
+	}
+}
+
+
diff --git a/filter/filter-arg.h b/filter/filter-arg.h
new file mode 100644
index 0000000000..ecdba3436d
--- /dev/null
+++ b/filter/filter-arg.h
@@ -0,0 +1,72 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  Abstract class to hold filter arguments.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _FILTER_ARG_H
+#define _FILTER_ARG_H
+
+#include <gtk/gtk.h>
+#include <gtkhtml/gtkhtml.h>
+#include <gnome-xml/tree.h>
+
+#define FILTER_ARG(obj)         GTK_CHECK_CAST (obj, filter_arg_get_type (), FilterArg)
+#define FILTER_ARG_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, filter_arg_get_type (), FilterArgClass)
+#define IS_FILTER_ARG(obj)      GTK_CHECK_TYPE (obj, filter_arg_get_type ())
+
+typedef struct _FilterArg      FilterArg;
+typedef struct _FilterArgClass FilterArgClass;
+
+struct _FilterArg {
+	GtkObject object;
+
+	char *name;
+	GList *values;
+};
+
+struct _FilterArgClass {
+	GtkObjectClass parent_class;
+
+	/* virtual methods */
+	void (*write_html)(FilterArg *arg, GtkHTML *html, GtkHTMLStreamHandle *stream);
+	void (*write_text)(FilterArg *arg, GString *string);
+	void (*free_value)(FilterArg *arg, void *v);
+	void (*edit_values)(FilterArg *arg);
+
+	void (*values_add_xml)(FilterArg *arg, xmlNodePtr node);
+	xmlNodePtr (*values_get_xml)(FilterArg *arg);
+
+	char * (*get_value_as_string)(FilterArg *arg, void *data);
+
+	/* signals */
+	void (*changed)(FilterArg *arg);
+};
+
+guint		filter_arg_get_type	(void);
+FilterArg      *filter_arg_new	(char *name);
+void		filter_arg_value_add(FilterArg *a, void *v);
+
+xmlNodePtr	filter_arg_values_get_xml(FilterArg *arg);
+void		filter_arg_values_add_xml(FilterArg *arg, xmlNodePtr node);
+int		filter_arg_get_count(FilterArg *arg);
+void 	       *filter_arg_get_value(FilterArg *arg, int index);
+char 	       *filter_arg_get_value_as_string(FilterArg *arg, int index);
+
+#endif /* ! _FILTER_ARG_H */
diff --git a/filter/filter-driver.c b/filter/filter-driver.c
new file mode 100644
index 0000000000..6df07e76b8
--- /dev/null
+++ b/filter/filter-driver.c
@@ -0,0 +1,176 @@
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gnome.h>
+#include <gtkhtml/gtkhtml.h>
+
+#include <gnome-xml/tree.h>
+#include <gnome-xml/parser.h>
+
+#include "filter-arg-types.h"
+#include "filter-xml.h"
+#include "filter-sexp.h"
+
+extern int filter_find_arg(FilterArg *a, char *name);
+
+/*
+  splices ${cc} lines into a single string
+*/
+int
+expand_variables(GString *out, char *source, GList *args, int index)
+{
+	GList *argl;
+	FilterArg *arg;
+	char *name= alloca(32);
+	char *start, *end, *newstart, *tmp;
+	int namelen=32;
+	int len=0;
+	int ok = 0;
+
+	start = source;
+	while ( (newstart = strstr(start, "${"))
+		&& (end = strstr(newstart+2, "}")) ) {
+		len = end-newstart-2;
+		if (len+1>namelen) {
+			namelen = (len+1)*2;
+			name = alloca(namelen);
+		}
+		memcpy(name, newstart+2, len);
+		name[len] = 0;
+		argl = g_list_find_custom(args, name, filter_find_arg);
+		if (argl) {
+			arg = argl->data;
+			tmp = g_strdup_printf("%.*s%s", newstart-start, start, filter_arg_get_value_as_string(arg, index));
+			printf("appending: %s\n", tmp);
+			g_string_append(out, tmp);
+			g_free(tmp);
+		} else {
+			ok = 1;
+			tmp = g_strdup_printf("%.*s", end-start+1, start);
+			printf("appending: %s\n", tmp);
+			g_string_append(out, tmp);
+			g_free(tmp);
+		}
+		start = end+1;
+	}
+	g_string_append(out, start);
+
+	return ok;
+}
+
+/*
+  build an expression for the filter
+*/
+static void
+expand_filter_option(GString *s, struct filter_option *op)
+{
+	GList *optionl;
+	FilterArg *arg;
+
+	g_string_append(s, "(and ");
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_MATCH) {
+			GList *argl;
+			int max=1, count;
+			int i;
+
+			/* find out how many values we have in each arg (rule
+			   is repeated that many times for each arg) */
+			argl = or->args;
+			while (argl) {
+				arg = argl->data;
+				count = filter_arg_get_count(arg);
+				if (count>=max && max>1) {
+					g_warning("Rule '%s' has too many multi-valued values, ignored", or->rule->name);
+					goto next_rule;
+				}
+				if (count>max) {
+					max = count;
+				}
+				argl = g_list_next(argl);
+			}
+			g_string_append(s, "(or ");
+			for (i=0;i<max;i++) {
+				expand_variables(s, or->rule->code, or->args, i);
+			}
+			g_string_append(s, ") ");
+		}
+	next_rule:
+		optionl = g_list_next(optionl);
+	}
+#if 0
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_EXCEPT) {
+			g_string_append(s, " (except \"");
+			g_string_append(s, or->rule->name);
+			g_string_append(s, "\" ");
+			g_string_append(s, or->rule->code);
+			g_string_append(s, " ) ");
+		}
+		optionl = g_list_next(optionl);
+	}
+#endif
+	g_string_append(s, ")");
+#if 0
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_ACTION) {
+			g_string_append(s, or->rule->code);
+			g_string_append(s, " ");
+		}
+		optionl = g_list_next(optionl);
+	}
+	g_string_append(s, ")))");
+#endif
+	printf("combined rule '%s'\n", s->str);
+}
+
+int main(int argc, char **argv)
+{
+	FilterSEXP *f;
+	FilterSEXPResult *r;
+	GList *rules, *options;
+	xmlDocPtr doc, out, optionset, filteroptions;
+	GString *s;
+
+	gnome_init("Test", "0.0", argc, argv);
+
+	doc = xmlParseFile("filterdescription.xml");
+	rules = load_ruleset(doc);
+	options = load_optionset(doc, rules);
+	out = xmlParseFile("saveoptions.xml");
+	options = load_optionset(out, rules);
+
+	s = g_string_new("");
+	expand_filter_option(s, options->data);
+	g_string_append(s, "");
+
+	printf("total rule = '%s'\n", s->str);
+
+	f = filter_sexp_new();
+	filter_sexp_add_variable(f, 0, "sender", NULL);
+	filter_sexp_add_variable(f, 0, "receipient", NULL);
+	filter_sexp_add_variable(f, 0, "folder", NULL);
+
+	/* simple functions */
+	filter_sexp_add_function(f, 0, "header-get", NULL, NULL);
+	filter_sexp_add_function(f, 0, "header-contains", NULL, NULL);
+	filter_sexp_add_function(f, 0, "copy-to", NULL, NULL);
+
+	filter_sexp_add_ifunction(f, 0, "set", NULL, NULL);
+
+	/* control functions */
+	filter_sexp_add_ifunction(f, 0, "match-all", NULL, NULL);
+	filter_sexp_add_ifunction(f, 0, "match", NULL, NULL);
+	filter_sexp_add_ifunction(f, 0, "action", NULL, NULL);
+	filter_sexp_add_ifunction(f, 0, "except", NULL, NULL);
+
+	filter_sexp_input_text(f, s->str, strlen(s->str));
+	filter_sexp_parse(f);
+	
+}
diff --git a/filter/filter-sexp.c b/filter/filter-sexp.c
new file mode 100644
index 0000000000..738ffa3380
--- /dev/null
+++ b/filter/filter-sexp.c
@@ -0,0 +1,1073 @@
+/* 
+ * Copyright 2000 HelixCode (http://www.helixcode.com).
+ *
+ * A simple, extensible s-exp evaluation engine.
+ *
+ * Author : 
+ *  Michael Zucchi <notzed@helixcode.com>
+
+ * This program is free software; you can redistribute it and/or 
+ * modify it under the terms of the GNU General Public License as 
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+/*
+  The following built-in s-exp's are supported:
+
+  list = (and list*)
+	perform an intersection of a number of lists, and return that.
+
+  bool = (and bool*)
+	perform a boolean AND of boolean values.
+
+  list = (or list*)
+	perform a union of a number of lists, returning the new list.
+
+  bool = (or bool*)
+	perform a boolean OR of boolean values.
+
+  int = (+ int*)
+	Add integers.
+
+  string = (+ string*)
+	Concat strings.
+
+  int = (- int int*)
+	Subtract integers from the first.
+
+  Comparison operators:
+
+  bool = (< int int)
+  bool = (> int int)
+  bool = (= int int)
+
+  bool = (< string string)
+  bool = (> string string)
+  bool = (= string string)
+	Perform a comparision of 2 integers, or 2 string values.
+
+  Function flow:
+
+  type = (if bool function)
+  type = (if bool function function)
+  	Choose a flow path based on a boolean value
+
+  type = (begin  func func func)
+        Execute a sequence.  The last function return is the return type.
+*/
+
+#include <glib.h>
+#include <stdio.h>
+#include <time.h>
+#include <string.h>
+
+#include "filter-sexp.h"
+
+#define p(x)			/* parse debug */
+#define r(x)			/* run debug */
+#define d(x)			/* general debug */
+
+
+static struct _FilterSEXPTerm * parse_list(FilterSEXP *f, int gotbrace);
+static struct _FilterSEXPTerm * parse_value(FilterSEXP *f);
+
+static void parse_dump_term(struct _FilterSEXPTerm *t, int depth);
+
+static GtkObjectClass *parent_class;
+
+
+
+static GScannerConfig scanner_config =
+{
+	( " \t\r\n")		/* cset_skip_characters */,
+	( G_CSET_a_2_z
+	  "_+<=>"
+	  G_CSET_A_2_Z)		/* cset_identifier_first */,
+	( G_CSET_a_2_z
+	  "_0123456789-<>"
+	  G_CSET_A_2_Z
+	  G_CSET_LATINS
+	  G_CSET_LATINC	)	/* cset_identifier_nth */,
+	( ";\n" )		/* cpair_comment_single */,
+  
+	FALSE			/* case_sensitive */,
+  
+	TRUE			/* skip_comment_multi */,
+	TRUE			/* skip_comment_single */,
+	TRUE			/* scan_comment_multi */,
+	TRUE			/* scan_identifier */,
+	TRUE			/* scan_identifier_1char */,
+	FALSE			/* scan_identifier_NULL */,
+	TRUE			/* scan_symbols */,
+	FALSE			/* scan_binary */,
+	TRUE			/* scan_octal */,
+	TRUE			/* scan_float */,
+	TRUE			/* scan_hex */,
+	FALSE			/* scan_hex_dollar */,
+	TRUE			/* scan_string_sq */,
+	TRUE			/* scan_string_dq */,
+	TRUE			/* numbers_2_int */,
+	FALSE			/* int_2_float */,
+	FALSE			/* identifier_2_string */,
+	TRUE			/* char_2_token */,
+	FALSE			/* symbol_2_token */,
+	FALSE			/* scope_0_fallback */,
+};
+
+struct _FilterSEXPResult *
+filter_sexp_result_new(int type)
+{
+	struct _FilterSEXPResult *r = g_malloc0(sizeof(*r));
+	r->type = type;
+	return r;
+}
+
+void
+filter_sexp_result_free(struct _FilterSEXPResult *t)
+{
+	if (t == NULL)
+		return;
+
+	switch(t->type) {
+	case FSEXP_RES_ARRAY_PTR:
+		g_ptr_array_free(t->value.ptrarray, TRUE);
+		break;
+	case FSEXP_RES_BOOL:
+	case FSEXP_RES_INT:
+		break;
+	case FSEXP_RES_STRING:
+		g_free(t->value.string);
+		break;
+	case FSEXP_RES_UNDEFINED:
+		break;
+	}
+	g_free(t);
+}
+
+/* implementations for the builtin functions */
+
+/* can you tell, i dont like glib? */
+/* we can only itereate a hashtable from a called function */
+struct _glib_sux_donkeys {
+	int count;
+	GPtrArray *uids;
+};
+
+/* ok, store any values that are in all sets */
+static void
+g_lib_sux_htand(char *key, int value, struct _glib_sux_donkeys *fuckup)
+{
+	if (value == fuckup->count) {
+		g_ptr_array_add(fuckup->uids, key);
+	}
+}
+
+/* or, store all unique values */
+static void
+g_lib_sux_htor(char *key, int value, struct _glib_sux_donkeys *fuckup)
+{
+	g_ptr_array_add(fuckup->uids, key);
+}
+
+static FilterSEXPResult *
+term_eval_and(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+	GHashTable *ht = g_hash_table_new(g_str_hash, g_str_equal);
+	struct _glib_sux_donkeys lambdafoo;
+	int type=-1;
+	int bool = TRUE;
+	int i;
+	
+	r(printf("( and\n"));
+
+	r = filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+	
+	for (i=0;bool && i<argc;i++) {
+		r1 = filter_sexp_term_eval(f, argv[i]);
+		if (type == -1)
+			type = r1->type;
+		if (type != r1->type) {
+			printf("invalid types in and operation, all types must be the same\n");
+		} else if ( r1->type == FSEXP_RES_ARRAY_PTR ) {
+			char **a1;
+			int l1, j;
+			
+			a1 = (char **)r1->value.ptrarray->pdata;
+			l1 = r1->value.ptrarray->len;
+			for (j=0;i<l1;j++) {
+				int n;
+				n = (int)g_hash_table_lookup(ht, a1[i]);
+				g_hash_table_insert(ht, a1[i], (void *)n+1);
+			}
+		} else if ( r1->type == FSEXP_RES_BOOL ) {
+			bool &= r1->value.bool;
+		}
+		filter_sexp_result_free(r1);
+	}
+	
+	if (type == FSEXP_RES_ARRAY_PTR) {
+		lambdafoo.count = argc;
+		lambdafoo.uids = g_ptr_array_new();
+		g_hash_table_foreach(ht, (GHFunc)g_lib_sux_htand, &lambdafoo);
+		r->type = FSEXP_RES_ARRAY_PTR;
+		r->value.ptrarray = lambdafoo.uids;
+	} else if (type == FSEXP_RES_BOOL) {
+		r->type = FSEXP_RES_BOOL;
+		r->value.bool = bool;
+	}
+	
+	g_hash_table_destroy(ht);
+	
+	return r;
+}
+
+static FilterSEXPResult *
+term_eval_or(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+	GHashTable *ht = g_hash_table_new(g_str_hash, g_str_equal);
+	struct _glib_sux_donkeys lambdafoo;
+	int type = -1;
+	int bool = FALSE;
+	int i;
+	
+	r(printf("(or \n"));
+
+	r = filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+	
+	for (i=0;!bool && i<argc;i++) {
+		r1 = filter_sexp_term_eval(f, argv[i]);
+		if (type == -1)
+			type = r1->type;
+		if (r1->type != type) {
+			printf("wrong types in or operation\n");
+		} else if (r1->type == FSEXP_RES_ARRAY_PTR) {
+			char **a1;
+			int l1, j;
+			
+			a1 = (char **)r1->value.ptrarray->pdata;
+			l1 = r1->value.ptrarray->len;
+			for (j=0;i<l1;j++) {
+				g_hash_table_insert(ht, a1[j], (void *)1);
+			}
+		} else if (r1->type == FSEXP_RES_BOOL) {
+			bool |= r1->value.bool;				
+		}
+		filter_sexp_result_free(r1);
+	}
+	
+	if (type == FSEXP_RES_ARRAY_PTR) {
+		lambdafoo.count = argc;
+		lambdafoo.uids = g_ptr_array_new();
+		g_hash_table_foreach(ht, (GHFunc)g_lib_sux_htor, &lambdafoo);
+		r->type = FSEXP_RES_ARRAY_PTR;
+		r->value.ptrarray = lambdafoo.uids;
+	} else if (type == FSEXP_RES_BOOL) {
+		r->type = FSEXP_RES_BOOL;
+		r->value.bool = bool;
+	}
+	g_hash_table_destroy(ht);
+	
+	return r;
+}
+
+/* this should support all arguments ...? */
+static FilterSEXPResult *
+term_eval_lt(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+
+	r = filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+	
+	if (argc == 2) {
+		r1 = filter_sexp_term_eval(f, argv[0]);
+		r2 = filter_sexp_term_eval(f, argv[1]);
+		if (r1->type != r2->type) {
+			printf("error, invalid types in compare\n");
+		} else if (r1->type == FSEXP_RES_INT) {
+			r->type = FSEXP_RES_BOOL;
+			r->value.bool = r1->value.number < r2->value.number;
+		} else if (r1->type == FSEXP_RES_STRING) {
+			r->type = FSEXP_RES_BOOL;
+			r->value.bool = strcmp(r1->value.string, r2->value.string) < 0;
+		}
+	}
+	return r;
+}
+
+/* this should support all arguments ...? */
+static FilterSEXPResult *
+term_eval_gt(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+
+	r = filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+	
+	if (argc == 2) {
+		r1 = filter_sexp_term_eval(f, argv[0]);
+		r2 = filter_sexp_term_eval(f, argv[1]);
+		if (r1->type != r2->type) {
+			printf("error, invalid types in compare\n");
+		} else if (r1->type == FSEXP_RES_INT) {
+			r->type = FSEXP_RES_BOOL;
+			r->value.bool = r1->value.number > r2->value.number;
+		} else if (r1->type == FSEXP_RES_STRING) {
+			r->type = FSEXP_RES_BOOL;
+			r->value.bool = strcmp(r1->value.string, r2->value.string) > 0;
+		}
+	}
+	return r;
+}
+
+/* this should support all arguments ...? */
+static FilterSEXPResult *
+term_eval_eq(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+
+	r = filter_sexp_result_new(FSEXP_RES_BOOL);
+	
+	if (argc == 2) {
+		r1 = filter_sexp_term_eval(f, argv[0]);
+		r2 = filter_sexp_term_eval(f, argv[1]);
+		if (r1->type != r2->type) {
+			r->value.bool = FALSE;
+		} else if (r1->type == FSEXP_RES_INT) {
+			r->value.bool = r1->value.number == r2->value.number;
+		} else if (r1->type == FSEXP_RES_BOOL) {
+			r->value.bool = r1->value.bool == r2->value.bool;
+		} else if (r1->type == FSEXP_RES_STRING) {
+			r->value.bool = strcmp(r1->value.string, r2->value.string) == 0;
+		}
+	}
+	return r;
+}
+
+static FilterSEXPResult *
+term_eval_plus(struct _FilterSEXP *f, int argc, struct _FilterSEXPResult **argv, void *data)
+{
+	struct _FilterSEXPResult *r=NULL, *r1, *r2;
+	int type;
+	int i;
+
+	if (argc>0) {
+		type = argv[0]->type;
+		switch(type) {
+		case FSEXP_RES_INT: {
+			int total = argv[0]->value.number;
+			for (i=1;i<argc && argv[i]->type == FSEXP_RES_INT;i++) {
+				total += argv[i]->value.number;
+			}
+			if (i<argc) {
+				g_warning("Wrong type trying to add integers: ignored");
+			}
+			r = filter_sexp_result_new(FSEXP_RES_INT);
+			r->value.number = total;
+			break; }
+		case FSEXP_RES_STRING: {
+			GString *s = g_string_new(argv[0]->value.string);
+			for (i=1;i<argc && argv[i]->type == FSEXP_RES_STRING;i++) {
+				g_string_append(s, argv[i]->value.string);
+			}
+			if (i<argc) {
+				g_warning("Wrong type trying to concat strings: ignored");
+			}
+			r = filter_sexp_result_new(FSEXP_RES_STRING);
+			r->value.string = s->str;
+			g_string_free(s, FALSE);
+			break; }
+			
+		}
+	}
+
+	if (!r) {
+		r = filter_sexp_result_new(FSEXP_RES_INT);
+		r->value.number = 0;
+	}
+	return r;
+}
+
+static FilterSEXPResult *
+term_eval_sub(struct _FilterSEXP *f, int argc, struct _FilterSEXPResult **argv, void *data)
+{
+	struct _FilterSEXPResult *r=NULL, *r1, *r2;
+	int type;
+	int i;
+
+	if (argc>0) {
+		type = argv[0]->type;
+		switch(type) {
+		case FSEXP_RES_INT: {
+			int total = argv[0]->value.number;
+			for (i=1;i<argc && argv[i]->type == FSEXP_RES_INT;i++) {
+				total -= argv[i]->value.number;
+			}
+			if (i<argc) {
+				g_warning("Wrong type trying to subtract numbers: ignored");
+			}
+			r = filter_sexp_result_new(FSEXP_RES_INT);
+			r->value.number = total;
+			break; }
+		}
+	}
+
+	if (!r) {
+		r = filter_sexp_result_new(FSEXP_RES_INT);
+		r->value.number = 0;
+	}
+	return r;
+}
+
+/* implements 'if' function */
+static FilterSEXPResult *
+term_eval_if(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+	int doit;
+
+	if (argc >=2 && argc<=3) {
+		r = filter_sexp_term_eval(f, argv[0]);
+		doit = (r->type == FSEXP_RES_BOOL && r->value.bool);
+		filter_sexp_result_free(r);
+		if (doit) {
+			return filter_sexp_term_eval(f, argv[1]);
+		} else if (argc>2) {
+			return filter_sexp_term_eval(f, argv[2]);
+		}
+	}
+	return filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+}
+
+/* implements 'begin' statement */
+static FilterSEXPResult *
+term_eval_begin(struct _FilterSEXP *f, int argc, struct _FilterSEXPTerm **argv, void *data)
+{
+	struct _FilterSEXPResult *r=NULL, *r1, *r2;
+	int i;
+
+	for (i=0;i<argc;i++) {
+		if (r)
+			filter_sexp_result_free(r);
+		r = filter_sexp_term_eval(f, argv[i]);
+	}
+	if (r)
+		return r;
+	else
+		return filter_sexp_result_new(FSEXP_RES_UNDEFINED);
+}
+
+
+struct _FilterSEXPResult *
+filter_sexp_term_eval(struct _FilterSEXP *f, struct _FilterSEXPTerm *t)
+{
+	struct _FilterSEXPResult *r, *r1, *r2;
+	int i;
+
+	r(printf("eval term :\n"));
+	r(parse_dump_term(t, 0));
+
+	r = g_malloc0(sizeof(*r));
+	r->type = FSEXP_RES_UNDEFINED;
+
+	switch (t->type) {
+	case FSEXP_TERM_STRING:
+		r(printf(" (string \"%s\")\n", t->value.string));
+		r->type = FSEXP_RES_STRING;
+		/* erk, this shoul;dn't need to strdup this ... */
+		r->value.string = g_strdup(t->value.string);
+		break;
+	case FSEXP_TERM_INT:
+		r(printf(" (int %d)\n", t->value.number));
+		r->type = FSEXP_RES_INT;
+		r->value.number = t->value.number;
+		break;
+	case FSEXP_TERM_BOOL:
+		r(printf(" (int %d)\n", t->value.number));
+		r->type = FSEXP_RES_BOOL;
+		r->value.bool = t->value.bool;
+		break;
+	case FSEXP_TERM_IFUNC: {
+		if (t->value.func.sym->f.ifunc) {
+			r1 = t->value.func.sym->f.ifunc(f, t->value.func.termcount, t->value.func.terms, t->value.func.sym->data);
+			if (r1) {
+				filter_sexp_result_free(r);
+				r = r1;
+			}
+		}
+		break; }
+	case FSEXP_TERM_FUNC: {
+		struct _FilterSEXPResult **argv;
+
+		/* first evaluate all arguments to result types */
+		argv = alloca(sizeof(argv[0]) * t->value.func.termcount);
+		for (i=0;i<t->value.func.termcount;i++) {
+			argv[i] = filter_sexp_term_eval(f, t->value.func.terms[i]);
+		}
+		/* call the function */
+		if (t->value.func.sym->f.func) {
+			r1 = t->value.func.sym->f.func(f, t->value.func.termcount, argv, t->value.func.sym->data);
+			if (r1) {
+				filter_sexp_result_free(r);
+				r = r1;
+			}
+		}
+		for (i=0;i<t->value.func.termcount;i++) {
+			filter_sexp_result_free(argv[i]);
+		}
+		break; }
+	default:
+		printf("Warning: Unknown type encountered in parse tree: %d\n", t->type);
+		r->type = FSEXP_RES_UNDEFINED;
+	}
+
+	return r;
+}
+
+
+static void
+eval_dump_result(FilterSEXPResult *r, int depth)
+{
+	int dumpvals = FALSE;
+	int i;
+	
+	if (r==NULL) {
+		printf("null result???\n");
+		return;
+	}
+
+	for (i=0;i<depth;i++)
+		printf("   ");
+
+	switch (r->type) {
+	case FSEXP_RES_ARRAY_PTR:
+		printf("array pointers\n");
+		break;
+	case FSEXP_RES_INT:
+		printf("int: %d\n", r->value.number);
+		break;
+	case FSEXP_RES_STRING:
+		printf("string: '%s'\n", r->value.string);
+		break;
+	case FSEXP_RES_BOOL:
+		printf("bool: %c\n", r->value.bool?'t':'f');
+		break;
+	case FSEXP_RES_UNDEFINED:
+		printf(" <undefined>\n");
+		break;
+	}
+	printf("\n");
+}
+
+static void
+parse_dump_term(struct _FilterSEXPTerm *t, int depth)
+{
+	int dumpvals = FALSE;
+	int i;
+
+	if (t==NULL) {
+		printf("null term??\n");
+		return;
+	}
+
+	for (i=0;i<depth;i++)
+		printf("   ");
+	
+	switch (t->type) {
+	case FSEXP_TERM_STRING:
+		printf(" \"%s\"", t->value.string);
+		break;
+	case FSEXP_TERM_INT:
+		printf(" %d", t->value.number);
+		break;
+	case FSEXP_TERM_BOOL:
+		printf(" #%c", t->value.bool?'t':'f');
+		break;
+	case FSEXP_TERM_IFUNC:
+	case FSEXP_TERM_FUNC:
+		printf(" (function %s\n", t->value.func.sym->name);
+		/*printf(" [%d] ", t->value.func.termcount);*/
+		for (i=0;i<t->value.func.termcount;i++) {
+			parse_dump_term(t->value.func.terms[i], depth+1);
+		}
+		for (i=0;i<depth;i++)
+			printf("   ");
+		printf(" )");
+		break;
+	case FSEXP_TERM_VAR:
+		printf(" (variable %s )\n", t->value.var->name);
+		break;
+	default:
+		printf("unknown type: %d\n", t->type);
+	}
+
+	printf("\n");
+}
+
+/*
+  PARSER
+*/
+
+static struct _FilterSEXPTerm *
+parse_new_term(int type)
+{
+	struct _FilterSEXPTerm *s = g_malloc0(sizeof(*s));
+	s->type = type;
+	return s;
+}
+
+static void
+parse_term_free(struct _FilterSEXPTerm *t)
+{
+	int i;
+
+	if (t==NULL) {
+		return;
+	}
+	
+	switch (t->type) {
+	case FSEXP_TERM_FUNC:
+	case FSEXP_TERM_IFUNC:
+		for (i=0;i<t->value.func.termcount;i++) {
+			parse_term_free(t->value.func.terms[i]);
+		}
+		g_free(t->value.func.terms);
+		break;
+	case FSEXP_TERM_VAR:
+		break;
+	case FSEXP_TERM_STRING:
+		g_free(t->value.string);
+		break;
+	case FSEXP_TERM_INT:
+		break;
+	default:
+		printf("parse_term_free: unknown type: %d\n", t->type);
+	}
+	g_free(t);
+}
+
+static struct _FilterSEXPTerm **
+parse_values(FilterSEXP *f, int *len)
+{
+	int token;
+	struct _FilterSEXPTerm **terms;
+	int i=0;
+	GScanner *gs = f->scanner;
+
+	p(printf("parsing values\n"));
+
+	/* FIXME: This hardcoded nonsense!!! :) */
+	terms = g_malloc0(20*sizeof(*terms));
+
+	while ( (token = g_scanner_peek_next_token(gs)) != G_TOKEN_EOF
+		&& token != ')') {
+		terms[i]=parse_value(f);
+		i++;
+	}
+
+	p(printf("found %d subterms\n", i));
+	*len = i;
+	
+	p(printf("dont parsing values\n"));
+	return terms;
+}
+
+static struct _FilterSEXPTerm *
+parse_value(FilterSEXP *f)
+{
+	int token;
+	struct _FilterSEXPTerm *t = NULL;
+	GScanner *gs = f->scanner;
+	struct _FilterSEXPSymbol *s;
+
+	p(printf("parsing value\n"));
+
+	token = g_scanner_get_next_token(gs);
+	switch(token) {
+	case G_TOKEN_LEFT_PAREN:
+		p(printf("got brace, its a list!\n"));
+		return parse_list(f, TRUE);
+	case G_TOKEN_STRING:
+		p(printf("got string\n"));
+		t = parse_new_term(FSEXP_TERM_STRING);
+		t->value.string = g_strdup(g_scanner_cur_value(gs).v_string);
+		break;
+	case G_TOKEN_INT:
+		t = parse_new_term(FSEXP_TERM_INT);
+		t->value.number = g_scanner_cur_value(gs).v_int;
+		p(printf("got int\n"));
+		break;
+	case '#':
+		printf("got bool?\n");
+		token = g_scanner_get_next_token(gs);
+		t = parse_new_term(FSEXP_TERM_BOOL);
+		t->value.bool = token=='t';
+		break;
+	case G_TOKEN_SYMBOL:
+		s = g_scanner_cur_value(gs).v_symbol;
+		switch (s->type) {
+		case FSEXP_TERM_FUNC:
+		case FSEXP_TERM_IFUNC:
+				/* this is basically invalid, since we can't use function
+				   pointers, but let the runtime catch it ... */
+			t = parse_new_term(s->type);
+			t->value.func.sym = s;
+			t->value.func.terms = parse_values(f, &t->value.func.termcount);
+			break;
+		case FSEXP_TERM_VAR:
+			t = parse_new_term(s->type);
+			t->value.var = s;
+			break;
+		default:
+			printf("Invalid symbol type: %d\n", s->type);
+		}
+		break;
+	case G_TOKEN_IDENTIFIER:
+		printf("Unknown identifier encountered: %s\n", g_scanner_cur_value(gs).v_identifier);
+		break;
+	default:
+		printf("Innvalid token trying to parse a list of values\n");
+	}
+	p(printf("done parsing value\n"));
+	return t;
+}
+
+/* FIXME: this needs some robustification */
+static struct _FilterSEXPTerm *
+parse_list(FilterSEXP *f, int gotbrace)
+{
+	int token;
+	struct _FilterSEXPTerm *t = NULL;
+	GScanner *gs = f->scanner;
+
+	p(printf("parsing list\n"));
+	if (gotbrace)
+		token = '(';
+	else
+		token = g_scanner_get_next_token(gs);
+	if (token =='(') {
+		token = g_scanner_get_next_token(gs);
+		switch(token) {
+		case G_TOKEN_SYMBOL: {
+			struct _FilterSEXPSymbol *s;
+
+			s = g_scanner_cur_value(gs).v_symbol;
+			p(printf("got funciton: %s\n", s->name));
+			t = parse_new_term(s->type);
+			p(printf("created new list %p\n", t));
+			/* if we have a variable, find out its base type */
+			while (s->type == FSEXP_TERM_VAR) {
+				s = ((FilterSEXPTerm *)(s->data))->value.var;
+			}
+			if (s->type == FSEXP_TERM_FUNC
+			    || s->type == FSEXP_TERM_IFUNC) {
+				t->value.func.sym = s;
+				t->value.func.terms = parse_values(f, &t->value.func.termcount);
+			} else {
+				printf("Error, trying to call variable as function\n");
+			}
+			break; }
+		case G_TOKEN_IDENTIFIER:
+			printf("Unknown identifier: %s\n", g_scanner_cur_value(gs).v_identifier);
+			break;
+		default:
+			printf("unknown sequence encountered, type = %d\n", token);
+		}
+		token = g_scanner_get_next_token(gs);
+		if (token != ')') {
+			printf("Error, expected ')' not found\n");
+		}
+	} else {
+		printf("Error, list term without opening (\n");
+	}
+
+	p(printf("returning list %p\n", t));
+	return t;
+}
+
+#if 0
+GList *
+camel_mbox_folder_search_by_expression(CamelFolder *folder, char *expression, CamelException *ex)
+{
+	GScanner *gs;
+	int i;
+	struct _FilterSEXPTerm *t;
+	struct _searchcontext *ctx;
+	struct _FilterSEXPResult *r;
+	GList *matches = NULL;
+
+	gs = g_scanner_new(&scanner_config);
+	for(i=0;i<sizeof(symbols)/sizeof(symbols[0]);i++)
+		g_scanner_scope_add_symbol(gs, 0, symbols[i].name, &symbols[i]);
+
+	g_scanner_input_text(gs, expression, strlen(expression));
+	t = parse_list(gs, 0);
+
+	if (t) {
+		ctx = g_malloc0(sizeof(*ctx));
+		ctx->folder = folder;
+		ctx->summary = camel_folder_get_summary(folder, ex);
+		ctx->message_info = camel_folder_summary_get_message_info_list(ctx->summary);
+#ifdef HAVE_IBEX
+		ctx->index = ibex_open(CAMEL_MBOX_FOLDER(folder)->index_file_path, FALSE);
+		if (!ctx->index) {
+			perror("Cannot open index file, body searches will be ignored\n");
+		}
+#endif
+		r = term_eval(ctx, t);
+
+		/* now create a folder summary to return?? */
+		if (r
+		    && r->type == FSEXP_RES_ARRAY_PTR) {
+			d(printf("got result ...\n"));
+			for (i=0;i<r->value.ptrarray->len;i++) {
+				d(printf("adding match: %s\n", (char *)g_ptr_array_index(r->value.ptrarray, i)));
+				matches = g_list_prepend(matches, g_strdup(g_ptr_array_index(r->value.ptrarray, i)));
+			}
+			filter_sexp_result_free(r);
+		}
+
+		if (ctx->index)
+			ibex_close(ctx->index);
+
+		gtk_object_unref((GtkObject *)ctx->summary);
+		g_free(ctx);
+		parse_term_free(t);
+	} else {
+		printf("Warning, Could not parse expression!\n %s\n", expression);
+	}
+
+	g_scanner_destroy(gs);
+
+	return matches;
+}
+#endif
+
+
+static void
+filter_sexp_class_init (FilterSEXPClass *class)
+{
+	GtkObjectClass *object_class;
+	
+	object_class = (GtkObjectClass *) class;
+	parent_class = gtk_type_class (gtk_object_get_type ());
+}
+
+/* 'builtin' functions */
+static struct {
+	char *name;
+	FilterSEXPFunc *func;
+	int type;		/* set to 1 if a function can perform shortcut evaluation, or
+				   doesn't execute everything, 0 otherwise */
+} symbols[] = {
+	{ "and", (FilterSEXPFunc *)term_eval_and, 1 },
+	{ "or", (FilterSEXPFunc *)term_eval_or, 1 },
+	{ "<", (FilterSEXPFunc *)term_eval_lt, 1 },
+	{ ">", (FilterSEXPFunc *)term_eval_gt, 1 },
+	{ "=", (FilterSEXPFunc *)term_eval_eq, 1 },
+	{ "+", (FilterSEXPFunc *)term_eval_plus, 0 },
+	{ "-", (FilterSEXPFunc *)term_eval_sub, 0 },
+	{ "if", (FilterSEXPFunc *)term_eval_if, 1 },
+	{ "begin", (FilterSEXPFunc *)term_eval_begin, 1 },
+};
+
+static void
+filter_sexp_init (FilterSEXP *s)
+{
+	int i;
+
+	s->scanner = g_scanner_new(&scanner_config);
+
+	/* load in builtin symbols? */
+	for(i=0;i<sizeof(symbols)/sizeof(symbols[0]);i++) {
+		if (symbols[i].type == 1) {
+			filter_sexp_add_ifunction(s, 0, symbols[i].name, (FilterSEXPIFunc *)symbols[i].func, &symbols[i]);
+		} else {
+			filter_sexp_add_function(s, 0, symbols[i].name, symbols[i].func, &symbols[i]);
+		}
+	}
+}
+
+guint
+filter_sexp_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"FilterSEXP",
+			sizeof (FilterSEXP),
+			sizeof (FilterSEXPClass),
+			(GtkClassInitFunc) filter_sexp_class_init,
+			(GtkObjectInitFunc) filter_sexp_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+		
+		type = gtk_type_unique (gtk_object_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+FilterSEXP *
+filter_sexp_new (void)
+{
+	FilterSEXP *f = FILTER_SEXP ( gtk_type_new (filter_sexp_get_type ()));
+
+	return f;
+}
+
+void
+filter_sexp_add_function(FilterSEXP *f, int scope, char *name, FilterSEXPFunc *func, void *data)
+{
+	struct _FilterSEXPSymbol *s;
+
+	g_return_if_fail(FILTER_IS_SEXP(f));
+	g_return_if_fail(name != NULL);
+
+	s = g_malloc0(sizeof(*s));
+	s->name = g_strdup(name);
+	s->f.func = func;
+	s->type = FSEXP_TERM_FUNC;
+	s->data = data;
+	g_scanner_scope_add_symbol(f->scanner, scope, s->name, s);
+}
+
+void
+filter_sexp_add_ifunction(FilterSEXP *f, int scope, char *name, FilterSEXPIFunc *ifunc, void *data)
+{
+	struct _FilterSEXPSymbol *s;
+
+	g_return_if_fail(FILTER_IS_SEXP(f));
+	g_return_if_fail(name != NULL);
+
+	s = g_malloc0(sizeof(*s));
+	s->name = g_strdup(name);
+	s->f.ifunc = ifunc;
+	s->type = FSEXP_TERM_IFUNC;
+	s->data = data;
+	g_scanner_scope_add_symbol(f->scanner, scope, s->name, s);
+}
+
+void
+filter_sexp_add_variable(FilterSEXP *f, int scope, char *name, FilterSEXPTerm *value)
+{
+	struct _FilterSEXPSymbol *s;
+
+	g_return_if_fail(FILTER_IS_SEXP(f));
+	g_return_if_fail(name != NULL);
+
+	s = g_malloc0(sizeof(*s));
+	s->name = g_strdup(name);
+	s->type = FSEXP_TERM_VAR;
+	s->data = value;
+	g_scanner_scope_add_symbol(f->scanner, scope, s->name, s);
+}
+
+void
+filter_sexp_remove_symbol(FilterSEXP *f, int scope, char *name)
+{
+	int oldscope;
+	struct _FilterSEXPSymbol *s;
+
+	g_return_if_fail(FILTER_IS_SEXP(f));
+	g_return_if_fail(name != NULL);
+
+	oldscope = g_scanner_set_scope(f->scanner, scope);
+	s = g_scanner_lookup_symbol(f->scanner, name);
+	g_scanner_scope_remove_symbol(f->scanner, scope, name);
+	g_scanner_set_scope(f->scanner, oldscope);
+	if (s) {
+		g_free(s->name);
+		g_free(s);
+	}
+}
+
+int
+filter_sexp_set_scope(FilterSEXP *f, int scope)
+{
+	g_return_val_if_fail(FILTER_IS_SEXP(f), 0);
+
+	return g_scanner_set_scope(f->scanner, scope);
+}
+
+void
+filter_sexp_input_text(FilterSEXP *f, char *text, int len)
+{
+	g_return_if_fail(FILTER_IS_SEXP(f));
+	g_return_if_fail(text != NULL);
+
+	g_scanner_input_text(f->scanner, text, len);
+}
+
+void
+filter_sexp_input_file (FilterSEXP *f, int fd)
+{
+	g_return_if_fail(FILTER_IS_SEXP(f));
+
+	g_scanner_input_file(f->scanner, fd);
+}
+
+/* needs some error return? */
+void
+filter_sexp_parse(FilterSEXP *f)
+{
+	g_return_if_fail(FILTER_IS_SEXP(f));
+
+	f->tree = parse_list(f, FALSE);
+
+	if (f->tree)
+		parse_dump_term(f->tree, 0);
+}
+
+struct _FilterSEXPResult *
+filter_sexp_eval(FilterSEXP *f)
+{
+	g_return_val_if_fail(FILTER_IS_SEXP(f), NULL);
+	g_return_val_if_fail(f->tree != NULL, NULL);
+
+	return filter_sexp_term_eval(f, f->tree);
+}
+
+#ifdef TESTER
+int main(int argc, char **argv)
+{
+	FilterSEXP *f;
+	char *t = "(+ \"foo\" \"\\\"\" \"bar\" \"\\\\ blah \\x \")";
+	FilterSEXPResult *r;
+
+	gtk_init(&argc, &argv);
+
+	f = filter_sexp_new();
+
+	filter_sexp_add_variable(f, 0, "test", NULL);
+
+	filter_sexp_input_text(f, t, strlen(t));
+	filter_sexp_parse(f);
+
+	if (f->tree) {
+		parse_dump_term(f->tree, 0);
+	}
+
+	r = filter_sexp_eval(f);
+	if (r) {
+		eval_dump_result(r, 0);
+	} else {
+		printf("no result?|\n");
+	}
+
+	return 0;
+}
+#endif
diff --git a/filter/filter-sexp.h b/filter/filter-sexp.h
new file mode 100644
index 0000000000..362b7261f9
--- /dev/null
+++ b/filter/filter-sexp.h
@@ -0,0 +1,117 @@
+/*
+  generic s-exp evaluator class
+*/
+#ifndef _FILTER_SEXP_H
+#define _FILTER_SEXP_H
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gtkhtml/gtkhtml.h>
+#include <gnome-xml/tree.h>
+
+#define FILTER_SEXP(obj)         GTK_CHECK_CAST (obj, filter_sexp_get_type (), FilterSEXP)
+#define FILTER_SEXP_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, filter_sexp_get_type (), FilterSEXPClass)
+#define FILTER_IS_SEXP(obj)      GTK_CHECK_TYPE (obj, filter_sexp_get_type ())
+
+typedef struct _FilterSEXP      FilterSEXP;
+typedef struct _FilterSEXPClass FilterSEXPClass;
+
+typedef struct _FilterSEXPSymbol FilterSEXPSymbol;
+typedef struct _FilterSEXPResult FilterSEXPResult;
+typedef struct _FilterSEXPTerm FilterSEXPTerm;
+
+typedef struct _FilterSEXPResult *(FilterSEXPFunc)(struct _FilterSEXP *sexp,
+						   int argc,
+						   struct _FilterSEXPResult **argv,
+						   void *data);
+
+typedef struct _FilterSEXPResult *(FilterSEXPIFunc)(struct _FilterSEXP *sexp,
+						    int argc,
+						    struct _FilterSEXPTerm **argv,
+						    void *data);
+enum _FilterSEXPResultType {
+	FSEXP_RES_ARRAY_PTR=0,	/* type is a ptrarray, what it points to is implementation dependant */
+	FSEXP_RES_INT,		/* type is a number */
+	FSEXP_RES_STRING,	/* type is a pointer to a single string */
+	FSEXP_RES_BOOL,		/* boolean type */
+	FSEXP_RES_UNDEFINED	/* unknown type */
+};
+
+struct _FilterSEXPResult {
+	enum _FilterSEXPResultType type;
+	union {
+		GPtrArray *ptrarray;
+		int number;
+		char *string;
+		int bool;
+	} value;
+};
+
+enum _FilterSEXPTermType {
+	FSEXP_TERM_INT	= 0,	/* integer literal */
+	FSEXP_TERM_BOOL,	/* boolean literal */
+	FSEXP_TERM_STRING,	/* string literal */
+	FSEXP_TERM_FUNC,	/* normal function, arguments are evaluated before calling */
+	FSEXP_TERM_IFUNC,	/* immediate function, raw terms are arguments */
+	FSEXP_TERM_VAR,		/* variable reference */
+};
+
+struct _FilterSEXPSymbol {
+	int type;		/* FSEXP_TERM_FUNC or FSEXP_TERM_VAR */
+	char *name;
+	void *data;
+	union {
+		FilterSEXPFunc *func;
+		FilterSEXPIFunc *ifunc;
+	} f;
+};
+
+struct _FilterSEXPTerm {
+	enum _FilterSEXPTermType type;
+	union {
+		char *string;
+		int number;
+		int bool;
+		struct {
+			struct _FilterSEXPSymbol *sym;
+			struct _FilterSEXPTerm **terms;
+			int termcount;
+		} func;
+		struct _FilterSEXPSymbol *var;
+	} value;
+};
+
+
+
+struct _FilterSEXP {
+	GtkObject object;
+
+	GScanner *scanner;	/* for parsing text version */
+	FilterSEXPTerm *tree;	/* root of expression tree */
+};
+
+struct _FilterSEXPClass {
+	GtkObjectClass parent_class;
+
+};
+
+guint		filter_sexp_get_type		(void);
+FilterSEXP     *filter_sexp_new			(void);
+void		filter_sexp_add_function  	(FilterSEXP *f, int scope, char *name, FilterSEXPFunc *func, void *data);
+void		filter_sexp_add_ifunction  	(FilterSEXP *f, int scope, char *name, FilterSEXPIFunc *func, void *data);
+void		filter_sexp_add_variable  	(FilterSEXP *f, int scope, char *name, FilterSEXPTerm *value);
+void		filter_sexp_remove_symbol	(FilterSEXP *f, int scope, char *name);
+int		filter_sexp_set_scope		(FilterSEXP *f, int scope);
+
+void		filter_sexp_input_text		(FilterSEXP *f, char *text, int len);
+void		filter_sexp_input_file		(FilterSEXP *f, int fd);
+
+
+void		filter_sexp_parse		(FilterSEXP *f);
+FilterSEXPResult *filter_sexp_eval		(FilterSEXP *f);
+
+FilterSEXPResult *filter_sexp_term_eval		(struct _FilterSEXP *f, struct _FilterSEXPTerm *t);
+FilterSEXPResult *filter_sexp_result_new	(int type);
+void		filter_sexp_result_free		(struct _FilterSEXPResult *t);
+
+#endif /* _FILTER_SEXP_H */
diff --git a/filter/filter-xml.c b/filter/filter-xml.c
new file mode 100644
index 0000000000..de86749db9
--- /dev/null
+++ b/filter/filter-xml.c
@@ -0,0 +1,658 @@
+/* -*- Mode: C; c-file-style: "linux"; indent-tabs-mode: t; c-basic-offset: 8; -*- */
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gnome.h>
+#include <gtkhtml/gtkhtml.h>
+
+#include <gnome-xml/tree.h>
+#include <gnome-xml/parser.h>
+
+#include "filter-arg-types.h"
+#include "filter-xml.h"
+
+struct token_tab {
+	char *name;
+	enum filter_xml_token token;
+};
+
+struct token_tab token_table[] = {
+	{ "action", FILTER_XML_ACTION },
+	{ "address", FILTER_XML_ADDRESS },
+	{ "code", FILTER_XML_CODE },
+	{ "description", FILTER_XML_DESC },
+	{ "except", FILTER_XML_EXCEPT },
+	{ "folder", FILTER_XML_FOLDER },
+	{ "match", FILTER_XML_MATCH },
+	{ "name", FILTER_XML_NAME },
+	{ "option", FILTER_XML_OPTION },
+	{ "optionrule", FILTER_XML_OPTIONRULE },
+	{ "optionset", FILTER_XML_OPTIONSET },
+	{ "optionvalue", FILTER_XML_OPTIONVALUE },
+	{ "receive", FILTER_XML_RECEIVE },
+	{ "rule", FILTER_XML_RULE },
+	{ "ruleset", FILTER_XML_RULESET },
+	{ "send", FILTER_XML_SEND },
+	{ "source", FILTER_XML_SOURCE },
+	{ "text", FILTER_XML_TEXT },
+};
+
+/* convert a name to a token value */
+static int
+tokenise(const char *name)
+{
+	int i;
+	int len = sizeof(token_table)/sizeof(token_table[0]);
+
+	if (name) {
+		for (i=0;i<len;i++) {
+			if (strcmp(name, token_table[i].name) == 0)
+				return token_table[i].token;
+		}
+	}
+	return -1;
+}
+
+static char *
+detokenise(int token)
+{
+	int i;
+	int len = sizeof(token_table)/sizeof(token_table[0]);
+
+	if (token>=0) {
+		for (i=0;i<len;i++) {
+			if (token_table[i].token == token)
+				return token_table[i].name;
+		}
+	}
+	return "<unknown>";
+}
+
+
+xmlNodePtr find_node(xmlNodePtr start, char *name)
+{
+	printf("trying to find node '%s'\n", name);
+	while (start && strcmp(start->name, name))
+		start = start->next;
+	printf("node = %p\n", start);
+	return start;
+}
+
+xmlNodePtr find_node_attr(xmlNodePtr start, char *name, char *attrname, char *attrvalue)
+{
+	xmlNodePtr node;
+	char *s;
+
+	printf("looking for node named %s with attribute %s=%s\n", name, attrname, attrvalue);
+
+	while (	start && (start = find_node(start, name)) ) {
+		s = xmlGetProp(start, attrname);
+		printf("   comparing '%s' to '%s'\n", s, attrvalue);
+		if (s && !strcmp(s, attrvalue))
+			break;
+		start = start->next;
+	}
+	return start;
+}
+
+static int
+find_arg(FilterArg *a, char *name)
+{
+	printf("finding, is %s = %s?\n", a->name, name);
+	return strcmp(a->name, name);
+}
+
+static int
+find_rule(struct filter_rule *a, char *name)
+{
+	printf("finding, is %s = %s?\n", a->name, name);
+	return strcmp(a->name, name);
+}
+
+static int display_order[] = { FILTER_XML_MATCH, FILTER_XML_ACTION, FILTER_XML_EXCEPT };
+
+static struct filter_option *
+option_clone(struct filter_option *source)
+{
+	struct filter_option *dest = g_malloc0(sizeof(*dest));
+	GList *loptions;
+	struct filter_optionrule *old, *new;
+
+	dest->type = source->type;
+	dest->description = source->description;
+	loptions = dest->options;
+	while (loptions) {
+		old = loptions->data;
+		new = g_malloc0(sizeof(*new));
+		new->rule = old->rule;
+		/* FIXME: need to copy any args as well!!! */
+		dest->options = g_list_append(dest->options, new);
+		loptions = g_list_next(loptions);
+	}
+	return dest;
+}
+
+
+
+struct description_decode_lambda {
+	GString *str;
+	GList *args;
+	GtkHTML *html;
+	GtkHTMLStreamHandle *stream;
+};
+
+static char *
+arg_text(FilterArg *arg)
+{
+	char *out = NULL;
+	GList *value, *next;
+	GString *str;
+
+	value = arg->values;
+
+	if (value == NULL)
+		return NULL;
+
+	str = g_string_new("");
+	filter_arg_write_text(arg, str);
+	out = str->str;
+	g_string_free(str, FALSE);
+	return out;
+}
+
+static void
+description_decode_text(struct filter_desc *d, struct description_decode_lambda *l)
+{
+	GList *list;
+	char *txt;
+
+	switch (d->type) {
+	case FILTER_XML_TEXT:
+	case FILTER_XML_DESC:
+	dotext:
+		printf("appending '%s'\n", d->data);
+		printf("vartype = %s\n", detokenise(d->vartype));
+		printf("varname = %s\n", d->varname);
+		if (d->vartype !=-1 && d->varname
+		    && (list = g_list_find_custom(l->args, d->varname, (GCompareFunc) find_arg))
+		    && (txt = arg_text(list->data))) {
+		} else {
+			txt = d->data;
+		}
+		g_string_append(l->str, txt);
+		break;
+	default:
+		printf("WARN: unknown desc text type '%s' = %s\n", detokenise(d->type), d->data);
+		goto dotext;
+	}
+}
+
+static char *
+description_text(GList *description, GList *args)
+{
+	char *txt;
+	struct description_decode_lambda l;
+
+	printf("\ndecoding ...\n");
+
+	l.str = g_string_new("");
+	l.args = args;
+	g_list_foreach(description, (GFunc) description_decode_text, &l);
+
+	printf("string is '%s'\n", l.str->str);
+
+	txt = l.str->str;
+	g_string_free(l.str, FALSE);
+
+	return txt;	
+}
+
+static void
+html_write(GtkHTML *html, GtkHTMLStreamHandle *stream, char *s)
+{
+	printf("appending html '%s'\n", s);
+	gtk_html_write(html, stream, s, strlen(s));
+}
+
+
+static void
+description_decode_html(struct filter_desc *d, struct description_decode_lambda *l)
+{
+	GList *list;
+	char *txt, *end;
+	int free;
+
+	switch (d->type) {
+	case FILTER_XML_TEXT:
+	case FILTER_XML_DESC:
+	dotext:
+		printf("appending '%s'\n", d->data);
+		printf("vartype = %s\n", detokenise(d->vartype));
+		printf("varname = %s\n", d->varname);
+		free = FALSE;
+		if (d->vartype !=-1 && d->varname) {
+			char *link;
+			list = g_list_find_custom(l->args, d->varname, (GCompareFunc) find_arg);
+			end = "</a>";
+			if (list) {
+				txt = arg_text(list->data);
+				if (txt == NULL)
+					txt = d->data;
+				else
+					free = TRUE;
+				link = g_strdup_printf("<a href=\"arg:%p %p\">", d, list->data);
+			} else {
+				printf("cannot find arg '%s'\n", d->varname);
+				link = g_strdup_printf("<a href=\"arg:%p %p\">", d, NULL);
+				txt = d->data;
+			}
+			html_write(l->html, l->stream, link);
+			g_free(link);
+		} else {
+			txt = d->data;
+			end = NULL;
+		}
+		html_write(l->html, l->stream, txt);
+		if (end) {
+			html_write(l->html, l->stream, end);
+		}
+		if (free)
+			g_free(txt);
+		break;
+	default:
+		printf("WARN: unknown desc text type '%s' = %s\n", detokenise(d->type), d->data);
+		goto dotext;
+	}
+}
+
+static void
+description_html_write(GList *description, GList *args, GtkHTML *html, GtkHTMLStreamHandle *stream)
+{
+	char *txt;
+	struct description_decode_lambda l;
+
+	printf("\ndecoding ...\n");
+
+	l.str = NULL;
+	l.args = args;
+	l.html = html;
+	l.stream = stream;
+	g_list_foreach(description, (GFunc) description_decode_html, &l);
+}
+
+
+static GList *
+load_desc(xmlNodePtr node, int type, int vartype, char *varname)
+{
+	struct filter_desc *desc;
+	xmlNodePtr n;
+	int newtype;
+	int newvartype;
+	char *newvarname;
+	GList *list = NULL;
+
+	while (node) {
+		if (node->content) {
+			desc = g_malloc0(sizeof(*desc));
+			desc->data = node->content;
+			desc->type = type;
+			desc->vartype = vartype;
+			desc->varname = varname?g_strdup(varname):0;
+			printf(" **** node name = %s var name = %s  var type = %s\n", node->name, varname, detokenise(vartype));
+			list = g_list_append(list, desc);
+			printf("appending '%s'\n", node->content);
+			newtype = type;
+			newvartype = -1;
+			newvarname = NULL;
+		} else {
+			newtype = tokenise(node->name);
+			newvartype = tokenise(xmlGetProp(node, "type"));
+			newvarname = xmlGetProp(node, "name");
+		}
+		n = node->childs;
+		while (n) {
+			printf("adding child '%s'\n", n->name);
+			list = g_list_concat(list, load_desc(n, newtype, newvartype, newvarname));
+			n = n->next;
+		}
+		node = node->next;
+	}
+	return list;
+}
+
+GList *
+load_ruleset(xmlDocPtr doc)
+{
+	xmlNodePtr ruleset, rule, n;
+	struct filter_rule *r;
+	int type;
+	int ruletype;
+	GList *rules = NULL;
+
+	g_return_val_if_fail(doc!=NULL, NULL);
+
+	ruleset = find_node(doc->root->childs, "ruleset");
+
+	while (ruleset) {
+
+		rule = ruleset->childs;
+		
+		ruletype = tokenise(xmlGetProp(ruleset, "type"));
+
+		printf("ruleset, name = %s\n", ruleset->name);
+
+		while (rule) {
+
+			n = rule->childs;
+			r = g_malloc0(sizeof(*r));
+			r->type = ruletype;
+			r->name = xmlGetProp(rule, "name");
+
+			printf(" rule, name = %s\n", r->name);
+
+			while (n) {
+				type = tokenise(n->name);
+				printf("  n, name = %s\n", n->name);
+				printf("  ncontent = %s\n", n->content);
+				printf("  childs = %p\n", n->childs);
+				if (n->childs) {
+					printf(" childs content = %s\n", n->childs->content);
+				}
+				switch(type) {
+				case FILTER_XML_CODE:
+					r->code = xmlNodeGetContent(n);
+					break;
+				case FILTER_XML_DESC:
+					printf(" ** loading description\n");
+					r->description = load_desc(n->childs, type, -1, NULL);
+					printf(" ** done loading description\n");
+					description_text(r->description, 0);
+					printf(" ** done dumping description\n");
+					break;
+				default:
+					printf("warning, unknown token encountered\n");
+					break;
+				}
+				n = n->next;
+			}
+			if (r)
+				rules = g_list_append(rules, r);
+			rule = rule->next;
+		}
+		ruleset = find_node(ruleset->next, "ruleset");
+	}
+	return rules;
+}
+
+int
+filter_find_rule(struct filter_rule *a, char *name)
+{
+	printf("finding, is %s = %s?\n", a->name, name);
+	return strcmp(a->name, name);
+}
+
+int
+filter_find_arg(FilterArg *a, char *name)
+{
+	printf("finding, is %s = %s?\n", a->name, name);
+	return strcmp(a->name, name);
+}
+
+static FilterArg *
+load_optionvalue(struct filter_desc *desc, xmlNodePtr node)
+{
+	xmlNodePtr n;
+	int token;
+	int lasttoken = -2;
+	FilterArg *arg = NULL;
+	char *name;
+
+	printf("creating arg entry for '%s'\n", desc->varname);
+
+	switch(desc->vartype) {
+	case FILTER_XML_ADDRESS:
+		arg = filter_arg_address_new(name);
+		break;
+	case FILTER_XML_FOLDER:
+		arg = filter_arg_folder_new(name);
+		break;
+	default:
+		printf("ok, maybe we're not\n");
+		/* unknown arg type, drop it */
+		return NULL;
+	}
+
+	if (node == NULL)
+		return arg;
+
+	filter_arg_values_add_xml(arg, node);
+
+	return arg;
+}
+
+/* loads a blank (empty args) optionrule from a rule */
+static struct filter_optionrule *
+optionrule_new(struct filter_rule *rule)
+{
+	GList *ldesc;
+	struct filter_desc *desc;
+	struct filter_optionrule *optionrule;
+
+	optionrule = g_malloc0(sizeof(*optionrule));
+	optionrule->rule = rule;
+
+	ldesc = rule->description;
+	while (ldesc) {
+		desc = ldesc->data;
+		if (desc->varname && desc->vartype!=-1) {
+			FilterArg *arg;
+			arg = load_optionvalue(desc, NULL);
+			if (arg)
+				optionrule->args = g_list_append(optionrule->args, arg);
+		}
+		ldesc = g_list_next(ldesc);
+	}
+	return optionrule;
+}
+
+GList *
+load_optionset(xmlDocPtr doc, GList *rules)
+{
+	xmlNodePtr optionset, option, o, or;
+	struct filter_option *op;
+	struct filter_optionrule *optionrule;
+	struct filter_rule *fr;
+	struct filter_desc *desc;
+	int type, token;
+	GList *l = NULL;
+	GList *lrule;
+	GList *ldesc;
+
+	g_return_val_if_fail(doc!=NULL, NULL);
+
+	optionset = find_node(doc->root->childs, "optionset");
+	if (optionset == NULL) {
+		printf("optionset not found\n");
+		return;
+	}
+	option = find_node(optionset->childs, "option");
+	while (option) {
+		o = option->childs;
+		op = g_malloc0(sizeof(*op));
+		printf("option = %s\n", o->name);
+		printf("option, type=%s\n", xmlGetProp(option, "type"));
+		op->type = tokenise(xmlGetProp(option, "type"));
+		while (o) {
+			type = tokenise(o->name);
+			switch (type) {
+			case FILTER_XML_OPTIONRULE:
+				lrule = g_list_find_custom(rules, xmlGetProp(o, "rule"), (GCompareFunc) filter_find_rule);
+				if (lrule) {
+					fr = lrule->data;
+					printf("found rule : %s\n", fr->name);
+					optionrule = g_malloc0(sizeof(*optionrule));
+					optionrule->rule = fr;
+					op->options = g_list_append(op->options, optionrule);
+
+					/* scan through all variables required, setup blank variables if they do not exist */
+					ldesc = fr->description;
+					while (ldesc) {
+						desc = ldesc->data;
+						if (desc->varname && desc->vartype!=-1) {
+							FilterArg *arg;
+							/* try and see if there is a setting for this value */
+							or = find_node_attr(o->childs, "optionvalue", "name", desc->varname);
+							arg = load_optionvalue(desc, or);
+							if (arg)
+								optionrule->args = g_list_append(optionrule->args, arg);
+						}
+						ldesc = g_list_next(ldesc);
+					}
+				} else {
+					printf("Cannot find rule: %s\n", xmlGetProp(o, "rule"));
+				}
+				break;
+			case FILTER_XML_DESC:
+				printf("loading option descriptiong\n");
+				op->description = load_desc(option->childs, type, -1, NULL);
+				break;
+			}
+			o = o->next;
+		}
+		l = g_list_append(l, op);
+		option = find_node(option->next, "option");
+	}
+	return l;
+}
+
+static xmlNodePtr
+save_optionset(xmlDocPtr doc, GList *optionl)
+{
+	xmlNodePtr root, cur, option, optionrule, optionvalue;
+	GList *optionrulel, *argl;
+	struct filter_optionrule *or;
+
+	root = xmlNewDocNode(doc, NULL, "optionset", NULL);
+
+	/* for all options */
+	while (optionl) {
+		struct filter_option *op = optionl->data;
+
+		option = xmlNewDocNode(doc, NULL, "option", NULL);
+		xmlSetProp(option, "type", detokenise(op->type));
+
+		optionrulel = op->options;
+		while (optionrulel) {
+			or = optionrulel->data;
+
+			optionrule = xmlNewDocNode(doc, NULL, "optionrule", NULL);
+			xmlSetProp(optionrule, "type", detokenise(or->rule->type));
+			xmlSetProp(optionrule, "rule", or->rule->name);
+
+			argl = or->args;
+			while (argl) {
+				FilterArg *arg = argl->data;
+
+				optionvalue = filter_arg_values_get_xml(arg);
+				if (optionvalue)
+					xmlAddChild(optionrule, optionvalue);
+
+				argl = g_list_next(argl);
+			}
+
+			xmlAddChild(option, optionrule);
+
+			optionrulel = g_list_next(optionrulel);
+		}
+
+		xmlAddChild(root, option);
+		optionl = g_list_next(optionl);
+	}
+
+	return root;
+}
+
+
+
+/*
+  build an expression for the filter
+*/
+static void
+filterme(struct filter_option *op)
+{
+	GList *optionl;
+	GString *s;
+
+	s = g_string_new("(if (and ");
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_MATCH) {
+			g_string_append(s, "(match \"");
+			g_string_append(s, or->rule->name);
+			g_string_append(s, "\" ");
+			g_string_append(s, or->rule->code);
+			g_string_append(s, ") ");
+		}
+		optionl = g_list_next(optionl);
+	}
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_EXCEPT) {
+			g_string_append(s, " (except \"");
+			g_string_append(s, or->rule->name);
+			g_string_append(s, "\" ");
+			g_string_append(s, or->rule->code);
+			g_string_append(s, " ) ");
+		}
+		optionl = g_list_next(optionl);
+	}
+	g_string_append(s, ") (begin ");
+	optionl = op->options;
+	while (optionl) {
+		struct filter_optionrule *or = optionl->data;
+		if (or->rule->type == FILTER_XML_ACTION) {
+			g_string_append(s, or->rule->code);
+			g_string_append(s, " ");
+		}
+		optionl = g_list_next(optionl);
+	}
+	g_string_append(s, "))");
+	printf("combined rule '%s'\n", s->str);
+}
+
+#ifdef TESTER
+int main(int argc, char **argv)
+{
+	GList *rules, *options;
+	xmlDocPtr doc, out, optionset, filteroptions;
+
+	gnome_init("Test", "0.0", argc, argv);
+
+	doc = xmlParseFile("filterdescription.xml");
+
+	rules = load_ruleset(doc);
+	options = load_optionset(doc, rules);
+
+	out = xmlParseFile("saveoptions.xml");
+	options = load_optionset(doc, rules);
+
+	while (options) {
+		printf("applying a rule ...\n");
+		filterme(options->data);
+		options = g_list_next(options);
+	}
+
+#if 0
+	out = xmlNewDoc("1.0");
+	optionset = save_optionset(out, options);
+	filteroptions = xmlNewDocNode(out, NULL, "filteroptions", NULL);
+	xmlAddChild(filteroptions, optionset);
+	xmlDocSetRootElement(out, filteroptions);
+	xmlSaveFile("saveoptions.xml", out);
+#endif
+	return 0;
+}
+#endif
+
diff --git a/filter/filter-xml.h b/filter/filter-xml.h
new file mode 100644
index 0000000000..a56b4baa2e
--- /dev/null
+++ b/filter/filter-xml.h
@@ -0,0 +1,51 @@
+
+#ifndef _FILTER_XML_H
+#define _FILTER_XML_H
+
+enum filter_xml_token {
+	FILTER_XML_TEXT=0,
+	FILTER_XML_RULE,
+	FILTER_XML_CODE,
+	FILTER_XML_DESC,
+	FILTER_XML_RULESET,
+	FILTER_XML_OPTION,
+	FILTER_XML_OPTIONRULE,
+	FILTER_XML_OPTIONSET,
+	FILTER_XML_OPTIONVALUE,
+	FILTER_XML_SOURCE,
+	FILTER_XML_SEND,
+	FILTER_XML_RECEIVE,
+	FILTER_XML_ADDRESS,
+	FILTER_XML_FOLDER,
+	FILTER_XML_NAME,
+	FILTER_XML_MATCH,
+	FILTER_XML_ACTION,
+	FILTER_XML_EXCEPT
+};
+
+struct filter_desc {
+	int type;
+	char *data;
+	char *varname;		/* for named types */
+	int vartype;
+};
+
+struct filter_rule {
+	int type;
+	char *name;
+	char *code;
+	GList *description;
+};
+
+struct filter_optionrule {
+	struct filter_rule *rule;
+	GList *args;		/* FilterArg objects */
+};
+
+struct filter_option {
+	int type;		/* 'send' 'receive'? */
+	GList *description;	/* filter_desc */
+	GList *options;		/* option_rule */
+};
+
+#endif /* ! _FILTER_XML_H */