inicial

21 files changed, 5311 insertions, 0 deletions

diff --git a/backend/impress/Makefile.am b/backend/impress/Makefile.am
new file mode 100644
index 00000000..a7b65705
--- /dev/null
+++ b/backend/impress/Makefile.am
@@ -0,0 +1,57 @@
+INCLUDES =					\
+	-I$(top_srcdir)				\
+	-I$(top_srcdir)/libdocument		\
+	-DMATELOCALEDIR=\"$(datadir)/locale\"	\
+	-DEVINCEDATADIR=\""$(datadir)"\"	\
+	-DEVINCE_COMPILATION			\
+	$(BACKEND_CFLAGS)			\
+	$(WARN_CFLAGS)				\
+	$(DISABLE_DEPRECATED)
+
+backend_LTLIBRARIES = libimpressdocument.la
+
+libimpressdocument_la_SOURCES =	\
+	$(IMPOSTER_SOURCE_FILES)	\
+	$(IMPOSTER_INCLUDE_FILES)	\
+	impress-document.c		\
+	impress-document.h
+
+IMPOSTER_SOURCE_FILES =			\
+	document.c			\
+	f_oasis.c			\
+	f_oo13.c			\
+	iksemel.c			\
+	r_back.c			\
+	r_draw.c			\
+	render.c			\
+	r_geometry.c			\
+	r_gradient.c			\
+	r_style.c			\
+	r_text.c			\
+	zip.c
+IMPOSTER_INCLUDE_FILES =		\
+	common.h			\
+	iksemel.h			\
+	imposter.h			\
+	internal.h			\
+	zip.h
+IMPOSTER_RENDER_SOURCE_FILES =		\
+	render.c
+IMPOSTER_RENDER_INCLUDE_FILES =		\
+	render.h
+
+libimpressdocument_la_LDFLAGS = $(BACKEND_LIBTOOL_FLAGS)
+libimpressdocument_la_LIBADD =				\
+	$(top_builddir)/libdocument/libevdocument.la     \
+	$(BACKEND_LIBS) -lz
+
+backend_in_files = impressdocument.evince-backend.in
+backend_DATA = $(backend_in_files:.evince-backend.in=.evince-backend)
+
+EXTRA_DIST = $(backend_in_files)
+
+CLEANFILES = $(backend_DATA)
+
+@EV_INTLTOOL_EVINCE_BACKEND_RULE@
+
+-include $(top_srcdir)/git.mk
diff --git a/backend/impress/common.h b/backend/impress/common.h
new file mode 100644
index 00000000..73e4ac19
--- /dev/null
+++ b/backend/impress/common.h
@@ -0,0 +1,40 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#ifndef COMMON_H
+#define COMMON_H 1
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+#include <stdio.h>
+
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#elif HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifndef errno
+extern int errno;
+#endif
+
+#include <iksemel.h>
+#include "imposter.h"
+
+
+#endif	/* COMMON_H */
diff --git a/backend/impress/document.c b/backend/impress/document.c
new file mode 100644
index 00000000..b01c0e18
--- /dev/null
+++ b/backend/impress/document.c
@@ -0,0 +1,140 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+static iks *
+_imp_load_xml(ImpDoc *doc, const char *xmlfile)
+{
+	int e;
+	iks *x;
+
+	x = zip_load_xml (doc->zfile, xmlfile, &e);
+	return x;
+}
+
+ImpDoc *
+imp_open(const char *filename, int *err)
+{
+	ImpDoc *doc;
+	int e;
+
+	doc = calloc(1, sizeof(ImpDoc));
+	if (!doc) {
+		*err = IMP_NOMEM;
+		return NULL;
+	}
+
+	doc->stack = iks_stack_new(sizeof(ImpPage) * 32, 0);
+	if (!doc->stack) {
+		*err = IMP_NOMEM;
+		imp_close(doc);
+		return NULL;
+	}
+
+	doc->zfile = zip_open(filename, &e);
+	if (e) {
+		*err = IMP_NOTZIP;
+		imp_close(doc);
+		return NULL;
+	}
+
+	doc->content = _imp_load_xml(doc, "content.xml");
+	doc->styles = _imp_load_xml(doc, "styles.xml");
+	doc->meta = _imp_load_xml(doc, "meta.xml");
+
+	if (!doc->content || !doc->styles) {
+		*err = IMP_BADDOC;
+		imp_close(doc);
+		return NULL;
+	}
+
+	e = _imp_oo13_load(doc);
+	if (e && e != IMP_NOTIMP) {
+		*err = e;
+		imp_close(doc);
+		return NULL;
+	}
+
+	if (e == IMP_NOTIMP) {
+		e = _imp_oasis_load(doc);
+		if (e) {
+			*err = e;
+			imp_close(doc);
+			return NULL;
+		}
+	}
+
+	return doc;
+}
+
+int
+imp_nr_pages(ImpDoc *doc)
+{
+	return doc->nr_pages;
+}
+
+ImpPage *
+imp_get_page(ImpDoc *doc, int page_no)
+{
+	if (page_no == IMP_LAST_PAGE) {
+		return doc->last_page;
+	} else {
+		ImpPage *page;
+		if (page_no < 0 || page_no > doc->nr_pages) return NULL;
+		for (page = doc->pages; page_no; --page_no) {
+			page = page->next;
+		}
+		return page;
+	}
+}
+
+ImpPage *
+imp_next_page(ImpPage *page)
+{
+	return page->next;
+}
+
+ImpPage *
+imp_prev_page(ImpPage *page)
+{
+	return page->prev;
+}
+
+int
+imp_get_page_no(ImpPage *page)
+{
+	return page->nr;
+}
+
+const char *
+imp_get_page_name(ImpPage *page)
+{
+	return page->name;
+}
+
+void *
+imp_get_xml(ImpDoc *doc, const char *filename)
+{
+	if (strcmp(filename, "content.xml") == 0)
+		return doc->content;
+	else if (strcmp(filename, "styles.xml") == 0)
+		return doc->styles;
+	else if (strcmp(filename, "meta.xml") == 0)
+		return doc->meta;
+	else
+		return NULL;
+}
+
+void
+imp_close(ImpDoc *doc)
+{
+	if (doc->stack) iks_stack_delete(doc->stack);
+	if (doc->zfile) zip_close(doc->zfile);
+	free(doc);
+}
diff --git a/backend/impress/f_oasis.c b/backend/impress/f_oasis.c
new file mode 100644
index 00000000..8fe6ee1a
--- /dev/null
+++ b/backend/impress/f_oasis.c
@@ -0,0 +1,170 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+static void
+render_object(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	char *tag, *t;
+	ImpColor fg;
+
+	tag = iks_name(node);
+	if (strcmp(tag, "draw:g") == 0) {
+		iks *x;
+		for (x = iks_first_tag(node); x; x = iks_next_tag(x)) {
+			render_object(ctx, drw_data, x);
+		}
+	} else if (strcmp(tag, "draw:frame") == 0) {
+		iks *x;
+		for (x = iks_first_tag(node); x; x = iks_next_tag(x)) {
+			render_object(ctx, drw_data, x);
+		}
+	} else if (strcmp(tag, "draw:line") == 0) {
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		ctx->drw->draw_line(drw_data,
+			r_get_x(ctx, node, "svg:x1"), r_get_y(ctx, node, "svg:y1"),
+			r_get_x(ctx, node, "svg:x2"), r_get_y(ctx, node, "svg:y2")
+		);
+	} else if (strcmp(tag, "draw:rect") == 0) {
+		int x, y, w, h, r = 0;
+		char *t;
+		x = r_get_x(ctx, node, "svg:x");
+		y = r_get_y(ctx, node, "svg:y");
+		w = r_get_x(ctx, node, "svg:width");
+		h = r_get_y(ctx, node, "svg:height");
+		t = r_get_style(ctx, node, "draw:corner-radius");
+		if (t) r = atof(t) * ctx->fact_x;
+		if (r_get_style(ctx, node, "draw:fill")) {
+			r_get_color(ctx, node, "draw:fill-color", &fg);
+			ctx->drw->set_fg_color(drw_data, &fg);
+			_imp_draw_rect(ctx, drw_data, 1, x, y, w, h, r);
+		}
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		_imp_draw_rect(ctx, drw_data, 0, x, y, w, h, r);
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:ellipse") == 0 || strcmp(tag, "draw:circle") == 0) {
+		int sa, ea, fill = 0;
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		sa = r_get_angle(node, "draw:start-angle", 0);
+		ea = r_get_angle(node, "draw:end-angle", 360);
+		if (ea > sa) ea = ea - sa; else ea = 360 + ea - sa;
+		t = r_get_style(ctx, node, "draw:fill");
+		if (t) fill = 1;
+		ctx->drw->set_fg_color(drw_data, &fg);
+		ctx->drw->draw_arc(drw_data,
+			fill,
+			r_get_x(ctx, node, "svg:x"), r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"), r_get_y(ctx, node, "svg:height"),
+			sa, ea
+		);
+	} else if (strcmp(tag, "draw:polygon") == 0) {
+		// FIXME:
+		r_polygon(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:text-box") == 0) {
+		// FIXME:
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:image") == 0) {
+		char *name;
+
+		name = iks_find_attrib(node, "xlink:href");
+		if (!name) return;
+		if (name[0] == '#') ++name;
+
+		_imp_draw_image(ctx, drw_data,
+			name,
+			r_get_x(ctx, node, "svg:x"),
+			r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"),
+			r_get_y(ctx, node, "svg:height")
+		);
+	} else {
+		printf("Unknown element: %s\n", tag);
+	}
+}
+
+static void
+render_page(ImpRenderCtx *ctx, void *drw_data)
+{
+	iks *x;
+	char *element;
+	int i;
+
+	i = _imp_fill_back(ctx, drw_data, ctx->page->page);
+	element = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	if (element) {
+		x = iks_find_with_attrib(
+			iks_find(ctx->page->doc->styles, "office:master-styles"),
+			"style:master-page", "style:name", element
+		);
+		if (x) {
+			if (i == 0) _imp_fill_back(ctx, drw_data, x);
+			for (x = iks_first_tag(x); x; x = iks_next_tag(x)) {
+				if (iks_find_attrib(x, "presentation:class"))
+					continue;
+				render_object(ctx, drw_data, x);
+			}
+		}
+	}
+	for (x = iks_first_tag(ctx->page->page); x; x = iks_next_tag(x)) {
+		render_object(ctx, drw_data, x);
+	}
+}
+
+static void
+get_geometry(ImpRenderCtx *ctx)
+{
+	char *tmp;
+	iks *x, *y;
+
+	tmp = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	x = iks_find(ctx->page->doc->styles, "office:master-styles");
+	y = iks_find_with_attrib(x, "style:master-page", "style:name", tmp);
+	x = iks_find(ctx->page->doc->styles, "office:automatic-styles");
+	y = iks_find_with_attrib(x, "style:page-layout", "style:name",
+		iks_find_attrib(y, "style:page-layout-name"));
+	ctx->cm_w = atof(iks_find_attrib(iks_find(y, "style:page-layout-properties"), "fo:page-width"));
+	ctx->cm_h = atof(iks_find_attrib(iks_find(y, "style:page-layout-properties"), "fo:page-height"));
+}
+
+int
+_imp_oasis_load(ImpDoc *doc)
+{
+	ImpPage *page;
+	iks *x, *pres;
+	int i;
+
+	pres = iks_find(iks_find(doc->content, "office:body"), "office:presentation");
+	if (!pres) return IMP_NOTIMP;
+
+	x = iks_find(pres, "draw:page");
+	if (!x) return IMP_NOTIMP;
+	i = 0;
+	for (; x; x = iks_next_tag(x)) {
+		if (strcmp(iks_name(x), "draw:page") == 0) {
+			page = iks_stack_alloc(doc->stack, sizeof(ImpPage));
+			if (!page) return IMP_NOMEM;
+			memset(page, 0, sizeof(ImpPage));
+			page->page = x;
+			page->nr = ++i;
+			page->name = iks_find_attrib(x, "draw:name");
+			page->doc = doc;
+			if (!doc->pages) doc->pages = page;
+			page->prev = doc->last_page;
+			if (doc->last_page) doc->last_page->next = page;
+			doc->last_page = page;
+		}
+	}
+	doc->nr_pages = i;
+	doc->get_geometry = get_geometry;
+	doc->render_page = render_page;
+
+	return 0;
+}
diff --git a/backend/impress/f_oo13.c b/backend/impress/f_oo13.c
new file mode 100644
index 00000000..7bfeeb53
--- /dev/null
+++ b/backend/impress/f_oo13.c
@@ -0,0 +1,181 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+//	{ "draw:text-box", r_text },
+//	{ "draw:connector", r_line },
+//	{ "draw:polyline", r_polyline },
+//	{ "draw:polygon", r_polygon },
+//	{ "draw:path", r_path },
+
+static void
+render_object(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	char *tag, *t;
+	ImpColor fg;
+
+	tag = iks_name(node);
+	if (strcmp(tag, "draw:g") == 0) {
+		iks *x;
+		for (x = iks_first_tag(node); x; x = iks_next_tag(x)) {
+			render_object(ctx, drw_data, x);
+		}
+	} else if (strcmp(tag, "draw:line") == 0) {
+		int x1, y1, x2, y2;
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		x1 = r_get_x(ctx, node, "svg:x1");
+		y1 = r_get_y(ctx, node, "svg:y1");
+		x2 = r_get_x(ctx, node, "svg:x2");
+		y2 = r_get_y(ctx, node, "svg:y2");
+		ctx->drw->draw_line(drw_data, x1, y1, x2, y2);
+		if (r_get_style(ctx, node, "draw:marker-start")) {
+			_imp_draw_line_end(ctx, drw_data, 0, 0, x2, y2, x1, y1);
+		}
+		if (r_get_style(ctx, node, "draw:marker-end")) {
+			_imp_draw_line_end(ctx, drw_data, 0, 0, x1, y1, x2, y2);
+		}
+	} else if (strcmp(tag, "draw:rect") == 0) {
+		int x, y, w, h, r = 0;
+		char *t;
+		x = r_get_x(ctx, node, "svg:x");
+		y = r_get_y(ctx, node, "svg:y");
+		w = r_get_x(ctx, node, "svg:width");
+		h = r_get_y(ctx, node, "svg:height");
+		t = r_get_style(ctx, node, "draw:corner-radius");
+		if (t) r = atof(t) * ctx->fact_x;
+		t = r_get_style(ctx, node, "draw:fill");
+		if (t && strcmp(t, "none") != 0) {
+			r_get_color(ctx, node, "draw:fill-color", &fg);
+			ctx->drw->set_fg_color(drw_data, &fg);
+			_imp_draw_rect(ctx, drw_data, 1, x, y, w, h, r);
+		}
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		_imp_draw_rect(ctx, drw_data, 0, x, y, w, h, r);
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:ellipse") == 0 || strcmp(tag, "draw:circle") == 0) {
+		int sa, ea, fill = 0;
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		sa = r_get_angle(node, "draw:start-angle", 0);
+		ea = r_get_angle(node, "draw:end-angle", 360);
+		if (ea > sa) ea = ea - sa; else ea = 360 + ea - sa;
+		t = r_get_style(ctx, node, "draw:fill");
+		if (t) fill = 1;
+		ctx->drw->set_fg_color(drw_data, &fg);
+		ctx->drw->draw_arc(drw_data,
+			fill,
+			r_get_x(ctx, node, "svg:x"), r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"), r_get_y(ctx, node, "svg:height"),
+			sa, ea
+		);
+	} else if (strcmp(tag, "draw:polygon") == 0) {
+		// FIXME:
+		r_polygon(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:text-box") == 0) {
+		// FIXME:
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:image") == 0) {
+		char *name;
+
+		name = iks_find_attrib(node, "xlink:href");
+		if (!name) return;
+		if (name[0] == '#') ++name;
+
+		_imp_draw_image(ctx, drw_data,
+			name,
+			r_get_x(ctx, node, "svg:x"),
+			r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"),
+			r_get_y(ctx, node, "svg:height")
+		);
+	} else {
+		printf("Unknown element: %s\n", tag);
+	}
+}
+
+static void
+render_page(ImpRenderCtx *ctx, void *drw_data)
+{
+	iks *x;
+	char *element;
+	int i;
+
+	i = _imp_fill_back(ctx, drw_data, ctx->page->page);
+	element = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	if (element) {
+		x = iks_find_with_attrib(
+			iks_find(ctx->page->doc->styles, "office:master-styles"),
+			"style:master-page", "style:name", element
+		);
+		if (x) {
+			if (i == 0) _imp_fill_back(ctx, drw_data, x);
+			for (x = iks_first_tag(x); x; x = iks_next_tag(x)) {
+				if (iks_find_attrib(x, "presentation:class"))
+					continue;
+				render_object(ctx, drw_data, x);
+			}
+		}
+	}
+	for (x = iks_first_tag(ctx->page->page); x; x = iks_next_tag(x)) {
+		render_object(ctx, drw_data, x);
+	}
+}
+
+static void
+get_geometry(ImpRenderCtx *ctx)
+{
+	char *tmp;
+	iks *x, *y;
+
+	tmp = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	x = iks_find(ctx->page->doc->styles, "office:master-styles");
+	y = iks_find_with_attrib(x, "style:master-page", "style:name", tmp);
+	x = iks_find(ctx->page->doc->styles, "office:automatic-styles");
+	y = iks_find_with_attrib(x, "style:page-master", "style:name",
+		iks_find_attrib(y, "style:page-master-name"));
+	ctx->cm_w = atof(iks_find_attrib(iks_find(y, "style:properties"), "fo:page-width"));
+	ctx->cm_h = atof(iks_find_attrib(iks_find(y, "style:properties"), "fo:page-height"));
+}
+
+int
+_imp_oo13_load(ImpDoc *doc)
+{
+	ImpPage *page;
+	char *class;
+	iks *x;
+	int i;
+
+	class = iks_find_attrib(doc->content, "office:class");
+	if (iks_strcmp(class, "presentation") != 0) return IMP_NOTIMP;
+
+	x = iks_find(iks_find(doc->content, "office:body"), "draw:page");
+	if (!x) return IMP_NOTIMP;
+	i = 0;
+	for (; x; x = iks_next_tag(x)) {
+		if (strcmp(iks_name(x), "draw:page") == 0) {
+			page = iks_stack_alloc(doc->stack, sizeof(ImpPage));
+			if (!page) return IMP_NOMEM;
+			memset(page, 0, sizeof(ImpPage));
+			page->page = x;
+			page->nr = ++i;
+			page->name = iks_find_attrib(x, "draw:name");
+			page->doc = doc;
+			if (!doc->pages) doc->pages = page;
+			page->prev = doc->last_page;
+			if (doc->last_page) doc->last_page->next = page;
+			doc->last_page = page;
+		}
+	}
+	doc->nr_pages = i;
+	doc->get_geometry = get_geometry;
+	doc->render_page = render_page;
+
+	return 0;
+}
diff --git a/backend/impress/iksemel.c b/backend/impress/iksemel.c
new file mode 100644
index 00000000..9908e132
--- /dev/null
+++ b/backend/impress/iksemel.c
@@ -0,0 +1,1882 @@
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2003 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+/* minimum sax buffer size */
+#define SAX_BUFFER_MIN_SIZE 128
+
+/* sax parser structure plus extra data of dom parser */
+#define DEFAULT_DOM_CHUNK_SIZE 256
+
+/* sax parser structure plus extra data of stream parser */
+#define DEFAULT_STREAM_CHUNK_SIZE 256
+
+/* iks structure, its data, child iks structures, for stream parsing */
+#define DEFAULT_IKS_CHUNK_SIZE 1024
+
+/* iks structure, its data, child iks structures, for file parsing */
+#define DEFAULT_DOM_IKS_CHUNK_SIZE 2048
+
+/* rule structure and from/to/id/ns strings */
+#define DEFAULT_RULE_CHUNK_SIZE 128
+
+/* file is read by blocks with this size */
+#define FILE_IO_BUF_SIZE 4096
+
+/* network receive buffer */
+#define NET_IO_BUF_SIZE 4096
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2003 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#include <config.h>
+#include <errno.h>
+
+#include "common.h"
+#include "iksemel.h"
+
+/*****  malloc wrapper  *****/
+
+static void *(*my_malloc_func)(size_t size);
+static void (*my_free_func)(void *ptr);
+
+void *
+iks_malloc (size_t size)
+{
+	if (my_malloc_func)
+		return my_malloc_func (size);
+	else
+		return malloc (size);
+}
+
+void
+iks_free (void *ptr)
+{
+	if (my_free_func)
+		my_free_func (ptr);
+	else
+		free (ptr);
+}
+
+void
+iks_set_mem_funcs (void *(*malloc_func)(size_t size), void (*free_func)(void *ptr))
+{
+	my_malloc_func = malloc_func;
+	my_free_func = free_func;
+}
+
+/*****  NULL-safe Functions  *****/
+
+char *
+iks_strdup (const char *src)
+{
+	if (src) return strdup(src);
+	return NULL;
+}
+
+char *
+iks_strcat (char *dest, const char *src)
+{
+	size_t len;
+
+	if (!src) return dest;
+
+	len = strlen (src);
+	memcpy (dest, src, len);
+	dest[len] = '\0';
+	return dest + len;
+}
+
+int
+iks_strcmp (const char *a, const char *b)
+{
+	if (!a || !b) return -1;
+	return strcmp (a, b);
+}
+
+int
+iks_strcasecmp (const char *a, const char *b)
+{
+	if (!a || !b) return -1;
+	return strcasecmp (a, b);
+}
+
+int
+iks_strncmp (const char *a, const char *b, size_t n)
+{
+	if (!a || !b) return -1;
+	return strncmp (a, b, n);
+}
+
+int
+iks_strncasecmp (const char *a, const char *b, size_t n)
+{
+	if (!a || !b) return -1;
+	return strncasecmp (a, b, n);
+}
+
+size_t
+iks_strlen (const char *src)
+{
+	if (!src) return 0;
+	return strlen (src);
+}
+
+/*****  XML Escaping  *****/
+
+char *
+iks_escape (ikstack *s, char *src, size_t len)
+{
+	char *ret;
+	int i, j, nlen;
+
+	if (!src || !s) return NULL;
+	if (len == -1) len = strlen (src);
+
+	nlen = len;
+	for (i=0; i<len; i++) {
+		switch (src[i]) {
+		case '&': nlen += 4; break;
+		case '<': nlen += 3; break;
+		case '>': nlen += 3; break;
+		case '\'': nlen += 5; break;
+		case '"': nlen += 5; break;
+		}
+	}
+	if (len == nlen) return src;
+
+	ret = iks_stack_alloc (s, nlen + 1);
+	if (!ret) return NULL;
+
+	for (i=j=0; i<len; i++) {
+		switch (src[i]) {
+		case '&': memcpy (&ret[j], "&amp;", 5); j += 5; break;
+		case '\'': memcpy (&ret[j], "&apos;", 6); j += 6; break;
+		case '"': memcpy (&ret[j], "&quot;", 6); j += 6; break;
+		case '<': memcpy (&ret[j], "&lt;", 4); j += 4; break;
+		case '>': memcpy (&ret[j], "&gt;", 4); j += 4; break;
+		default: ret[j++] = src[i];
+		}
+	}
+	ret[j] = '\0';
+
+	return ret;
+}
+
+char *
+iks_unescape (ikstack *s, char *src, size_t len)
+{
+	int i,j;
+	char *ret;
+
+	if (!s || !src) return NULL;
+	if (!strchr (src, '&')) return src;
+	if (len == -1) len = strlen (src);
+
+	ret = iks_stack_alloc (s, len + 1);
+	if (!ret) return NULL;
+
+	for (i=j=0; i<len; i++) {
+		if (src[i] == '&') {
+			i++;
+			if (strncmp (&src[i], "amp;", 4) == 0) {
+				ret[j] = '&';
+				i += 3;
+			} else if (strncmp (&src[i], "quot;", 5) == 0) {
+				ret[j] = '"';
+				i += 4;
+			} else if (strncmp (&src[i], "apos;", 5) == 0) {
+				ret[j] = '\'';
+				i += 4;
+			} else if (strncmp (&src[i], "lt;", 3) == 0) {
+				ret[j] = '<';
+				i += 2;
+			} else if (strncmp (&src[i], "gt;", 3) == 0) {
+				ret[j] = '>';
+				i += 2;
+			} else {
+				ret[j] = src[--i];
+			}
+		} else {
+			ret[j] = src[i];
+		}
+		j++;
+	}
+	ret[j] = '\0';
+
+	return ret;
+}
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2004 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#include "common.h"
+#include "iksemel.h"
+
+struct align_test { char a; double b; };
+#define DEFAULT_ALIGNMENT  ((size_t) ((char *) &((struct align_test *) 0)->b - (char *) 0))
+#define ALIGN_MASK ( DEFAULT_ALIGNMENT - 1 )
+#define MIN_CHUNK_SIZE ( DEFAULT_ALIGNMENT * 8 )
+#define MIN_ALLOC_SIZE DEFAULT_ALIGNMENT
+#define ALIGN(x) ( (x) + (DEFAULT_ALIGNMENT - ( (x) & ALIGN_MASK)) )
+
+typedef struct ikschunk_struct {
+	struct ikschunk_struct *next;
+	size_t size;
+	size_t used;
+	size_t last;
+	char data[4];
+} ikschunk;
+
+struct ikstack_struct {
+	size_t allocated;
+	ikschunk *meta;
+	ikschunk *data;
+};
+
+static ikschunk *
+find_space (ikstack *s, ikschunk *c, size_t size)
+{
+	/* FIXME: dont use *2 after over allocated chunks */
+	while (1) {
+		if (c->size - c->used >= size) return c;
+		if (!c->next) {
+			if ((c->size * 2) > size) size = c->size * 2;
+			c->next = iks_malloc (sizeof (ikschunk) + size);
+			if (!c->next) return NULL;
+			s->allocated += sizeof (ikschunk) + size;
+			c = c->next;
+			c->next = NULL;
+			c->size = size;
+			c->used = 0;
+			c->last = (size_t) -1;
+			return c;
+		}
+		c = c->next;
+	}
+	return NULL;
+}
+
+ikstack *
+iks_stack_new (size_t meta_chunk, size_t data_chunk)
+{
+	ikstack *s;
+	size_t len;
+
+	if (meta_chunk < MIN_CHUNK_SIZE) meta_chunk = MIN_CHUNK_SIZE;
+	if (meta_chunk & ALIGN_MASK) meta_chunk = ALIGN (meta_chunk);
+	if (data_chunk < MIN_CHUNK_SIZE) data_chunk = MIN_CHUNK_SIZE;
+	if (data_chunk & ALIGN_MASK) data_chunk = ALIGN (data_chunk);
+
+	len = sizeof (ikstack) + meta_chunk + data_chunk + (sizeof (ikschunk) * 2);
+	s = iks_malloc (len);
+	if (!s) return NULL;
+	s->allocated = len;
+	s->meta = (ikschunk *) ((char *) s + sizeof (ikstack));
+	s->meta->next = NULL;
+	s->meta->size = meta_chunk;
+	s->meta->used = 0;
+	s->meta->last = (size_t) -1;
+	s->data = (ikschunk *) ((char *) s + sizeof (ikstack) + sizeof (ikschunk) + meta_chunk);
+	s->data->next = NULL;
+	s->data->size = data_chunk;
+	s->data->used = 0;
+	s->data->last = (size_t) -1;
+	return s;
+}
+
+void *
+iks_stack_alloc (ikstack *s, size_t size)
+{
+	ikschunk *c;
+	void *mem;
+
+	if (size < MIN_ALLOC_SIZE) size = MIN_ALLOC_SIZE;
+	if (size & ALIGN_MASK) size = ALIGN (size);
+
+	c = find_space (s, s->meta, size);
+	if (!c) return NULL;
+	mem = c->data + c->used;
+	c->used += size;
+	return mem;
+}
+
+char *
+iks_stack_strdup (ikstack *s, const char *src, size_t len)
+{
+	ikschunk *c;
+	char *dest;
+
+	if (!src) return NULL;
+	if (0 == len) len = strlen (src);
+
+	c = find_space (s, s->data, len + 1);
+	if (!c) return NULL;
+	dest = c->data + c->used;
+	c->last = c->used;
+	c->used += len + 1;
+	memcpy (dest, src, len);
+	dest[len] = '\0';
+	return dest;
+}
+
+char *
+iks_stack_strcat (ikstack *s, char *old, size_t old_len, const char *src, size_t src_len)
+{
+	char *ret;
+	ikschunk *c;
+
+	if (!old) {
+		return iks_stack_strdup (s, src, src_len);
+	}
+	if (0 == old_len) old_len = strlen (old);
+	if (0 == src_len) src_len = strlen (src);
+
+	for (c = s->data; c; c = c->next) {
+		if (c->data + c->last == old) break;
+	}
+	if (!c) {
+		c = find_space (s, s->data, old_len + src_len + 1);
+		if (!c) return NULL;
+		ret = c->data + c->used;
+		c->last = c->used;
+		c->used += old_len + src_len + 1;
+		memcpy (ret, old, old_len);
+		memcpy (ret + old_len, src, src_len);
+		ret[old_len + src_len] = '\0';
+		return ret;
+	}
+
+	if (c->size - c->used > src_len) {
+		ret = c->data + c->last;
+		memcpy (ret + old_len, src, src_len);
+		c->used += src_len;
+		ret[old_len + src_len] = '\0';
+	} else {
+		/* FIXME: decrease c->used before moving string to new place */
+		c = find_space (s, s->data, old_len + src_len + 1);
+		if (!c) return NULL;
+		c->last = c->used;
+		ret = c->data + c->used;
+		memcpy (ret, old, old_len);
+		c->used += old_len;
+		memcpy (c->data + c->used, src, src_len);
+		c->used += src_len;
+		c->data[c->used] = '\0';
+		c->used++;
+	}
+	return ret;
+}
+
+void
+iks_stack_stat (ikstack *s, size_t *allocated, size_t *used)
+{
+	ikschunk *c;
+
+	if (allocated) {
+		*allocated = s->allocated;
+	}
+	if (used) {
+		*used = 0;
+		for (c = s->meta; c; c = c->next) {
+			(*used) += c->used;
+		}
+		for (c = s->data; c; c = c->next) {
+			(*used) += c->used;
+		}
+	}
+}
+
+void
+iks_stack_delete (ikstack *s)
+{
+	ikschunk *c, *tmp;
+
+	c = s->meta->next;
+	while (c) {
+		tmp = c->next;
+		iks_free (c);
+		c = tmp;
+	}
+	c = s->data->next;
+	while (c) {
+		tmp = c->next;
+		iks_free (c);
+		c = tmp;
+	}
+	iks_free (s);
+}
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2004 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#include "common.h"
+#include "iksemel.h"
+
+enum cons_e {
+	C_CDATA = 0,
+	C_TAG_START,
+	C_TAG,
+	C_TAG_END,
+	C_ATTRIBUTE,
+	C_ATTRIBUTE_1,
+	C_ATTRIBUTE_2,
+	C_VALUE,
+	C_VALUE_APOS,
+	C_VALUE_QUOT,
+	C_WHITESPACE,
+	C_ENTITY,
+	C_COMMENT,
+	C_COMMENT_1,
+	C_COMMENT_2,
+	C_COMMENT_3,
+	C_MARKUP,
+	C_MARKUP_1,
+	C_SECT,
+	C_SECT_CDATA,
+	C_SECT_CDATA_1,
+	C_SECT_CDATA_2,
+	C_SECT_CDATA_3,
+	C_SECT_CDATA_4,
+	C_SECT_CDATA_C,
+	C_SECT_CDATA_E,
+	C_SECT_CDATA_E2,
+	C_PI
+};
+
+/* if you add a variable here, dont forget changing iks_parser_reset */
+struct iksparser_struct {
+	ikstack *s;
+	void *user_data;
+	iksTagHook *tagHook;
+	iksCDataHook *cdataHook;
+	iksDeleteHook *deleteHook;
+	/* parser context */
+	char *stack;
+	size_t stack_pos;
+	size_t stack_max;
+
+	enum cons_e context;
+	enum cons_e oldcontext;
+
+	char *tag_name;
+	enum ikstagtype tagtype;
+
+	unsigned int attmax;
+	unsigned int attcur;
+	int attflag;
+	char **atts;
+	int valflag;
+
+	unsigned int entpos;
+	char entity[8];
+
+	unsigned long nr_bytes;
+	unsigned long nr_lines;
+
+	int uni_max;
+	int uni_len;
+};
+
+iksparser *
+iks_sax_new (void *user_data, iksTagHook *tagHook, iksCDataHook *cdataHook)
+{
+	iksparser *prs;
+
+	prs = iks_malloc (sizeof (iksparser));
+	if (NULL == prs) return NULL;
+	memset (prs, 0, sizeof (iksparser));
+	prs->user_data = user_data;
+	prs->tagHook = tagHook;
+	prs->cdataHook = cdataHook;
+	return prs;
+}
+
+iksparser *
+iks_sax_extend (ikstack *s, void *user_data, iksTagHook *tagHook, iksCDataHook *cdataHook, iksDeleteHook *deleteHook)
+{
+	iksparser *prs;
+
+	prs = iks_stack_alloc (s, sizeof (iksparser));
+	if (NULL == prs) return NULL;
+	memset (prs, 0, sizeof (iksparser));
+	prs->s = s;
+	prs->user_data = user_data;
+	prs->tagHook = tagHook;
+	prs->cdataHook = cdataHook;
+	prs->deleteHook = deleteHook;
+	return prs;
+}
+
+ikstack *
+iks_parser_stack (iksparser *prs)
+{
+	return prs->s;
+}
+
+void *
+iks_user_data (iksparser *prs)
+{
+	return prs->user_data;
+}
+
+unsigned long
+iks_nr_bytes (iksparser *prs)
+{
+	return prs->nr_bytes;
+}
+
+unsigned long
+iks_nr_lines (iksparser *prs)
+{
+	return prs->nr_lines;
+}
+
+#define IS_WHITESPACE(x) ' ' == (x) || '\t' == (x) || '\r' == (x) || '\n' == (x)
+#define NOT_WHITESPACE(x) ' ' != (x) && '\t' != (x) && '\r' != (x) && '\n' != (x)
+
+static int
+stack_init (iksparser *prs)
+{
+	prs->stack = iks_malloc (128);
+	if (!prs->stack) return 0;
+	prs->stack_max = 128;
+	prs->stack_pos = 0;
+	return 1;
+}
+
+static int
+stack_expand (iksparser *prs, int len)
+{
+	size_t need;
+	off_t diff;
+	char *tmp;
+	need = len - (prs->stack_max - prs->stack_pos);
+	if (need < prs->stack_max) {
+		need = prs->stack_max * 2;
+	} else {
+		need = prs->stack_max + (need * 1.2);
+	}
+	tmp = iks_malloc (need);
+	if (!tmp) return 0;
+	diff = tmp - prs->stack;
+	memcpy (tmp, prs->stack, prs->stack_max);
+	iks_free (prs->stack);
+	prs->stack = tmp;
+	prs->stack_max = need;
+	prs->tag_name += diff;
+	if (prs->attflag != 0) {
+		int i = 0;
+		while (i < (prs->attmax * 2)) {
+			if (prs->atts[i]) prs->atts[i] += diff;
+			i++;
+		}
+	}
+	return 1;
+}
+
+#define STACK_INIT \
+	if (NULL == prs->stack && 0 == stack_init (prs)) return IKS_NOMEM
+
+#define STACK_PUSH_START (prs->stack + prs->stack_pos)
+
+#define STACK_PUSH(buf,len) \
+{ \
+	char *sbuf = (buf); \
+	size_t slen = (len); \
+	if (prs->stack_max - prs->stack_pos <= slen) { \
+		if (0 == stack_expand (prs, slen)) return IKS_NOMEM; \
+	} \
+	memcpy (prs->stack + prs->stack_pos, sbuf, slen); \
+	prs->stack_pos += slen; \
+}
+
+#define STACK_PUSH_END \
+{ \
+	if (prs->stack_pos >= prs->stack_max) { \
+		if (0 == stack_expand (prs, 1)) return IKS_NOMEM; \
+	} \
+	prs->stack[prs->stack_pos] = '\0'; \
+	prs->stack_pos++; \
+}
+
+static enum ikserror
+sax_core (iksparser *prs, char *buf, int len)
+{
+	enum ikserror err;
+	int pos = 0, old = 0, re, stack_old = -1;
+	unsigned char c;
+
+	while (pos < len) {
+		re = 0;
+		c = buf[pos];
+		if (0 == c || 0xFE == c || 0xFF == c) return IKS_BADXML;
+		if (prs->uni_max) {
+			if ((c & 0xC0) != 0x80) return IKS_BADXML;
+			prs->uni_len++;
+			if (prs->uni_len == prs->uni_max) prs->uni_max = 0;
+			goto cont;
+		} else {
+			if (c & 0x80) {
+				unsigned char mask;
+				if ((c & 0x60) == 0x40) {
+					prs->uni_max = 2;
+					mask = 0x1F;
+				} else if ((c & 0x70) == 0x60) {
+					prs->uni_max = 3;
+					mask = 0x0F;
+				} else if ((c & 0x78) == 0x70) {
+					prs->uni_max = 4;
+					mask = 0x07;
+				} else if ((c & 0x7C) == 0x78) {
+					prs->uni_max = 5;
+					mask = 0x03;
+				} else if ((c & 0x7E) == 0x7C) {
+					prs->uni_max = 6;
+					mask = 0x01;
+				} else {
+					return IKS_BADXML;
+				}
+				if ((c & mask) == 0) return IKS_BADXML;
+				prs->uni_len = 1;
+				if (stack_old == -1) stack_old = pos;
+				goto cont;
+			}
+		}
+
+		switch (prs->context) {
+			case C_CDATA:
+				if ('&' == c) {
+					if (old < pos && prs->cdataHook) {
+						err = prs->cdataHook (prs->user_data, &buf[old], pos - old);
+						if (IKS_OK != err) return err;
+					}
+					prs->context = C_ENTITY;
+					prs->entpos = 0;
+					break;
+				}
+				if ('<' == c) {
+					if (old < pos && prs->cdataHook) {
+						err = prs->cdataHook (prs->user_data, &buf[old], pos - old);
+						if (IKS_OK != err) return err;
+					}
+					STACK_INIT;
+					prs->tag_name = STACK_PUSH_START;
+					if (!prs->tag_name) return IKS_NOMEM;
+					prs->context = C_TAG_START;
+				}
+				break;
+
+			case C_TAG_START:
+				prs->context = C_TAG;
+				if ('/' == c) {
+					prs->tagtype = IKS_CLOSE;
+					break;
+				}
+				if ('?' == c) {
+					prs->context = C_PI;
+					break;
+				}
+				if ('!' == c) {
+					prs->context = C_MARKUP;
+					break;
+				}
+				prs->tagtype = IKS_OPEN;
+				stack_old = pos;
+				break;
+
+			case C_TAG:
+				if (IS_WHITESPACE(c)) {
+					if (IKS_CLOSE == prs->tagtype)
+						prs->oldcontext = C_TAG_END;
+					else
+						prs->oldcontext = C_ATTRIBUTE;
+					prs->context = C_WHITESPACE;
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					break;
+				}
+				if ('/' == c) {
+					if (IKS_CLOSE == prs->tagtype) return IKS_BADXML;
+					prs->tagtype = IKS_SINGLE;
+					prs->context = C_TAG_END;
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					break;
+				}
+				if ('>' == c) {
+					prs->context = C_TAG_END;
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					re = 1;
+				}
+				if (stack_old == -1) stack_old = pos;
+				break;
+
+			case C_TAG_END:
+				if (c != '>') return IKS_BADXML;
+				if (prs->tagHook) {
+					char **tmp;
+					if (prs->attcur == 0) tmp = NULL; else tmp = prs->atts;
+					err = prs->tagHook (prs->user_data, prs->tag_name, tmp, prs->tagtype);
+					if (IKS_OK != err) return err;
+				}
+				prs->stack_pos = 0;
+				stack_old = -1;
+				prs->attcur = 0;
+				prs->attflag = 0;
+				prs->context = C_CDATA;
+				old = pos + 1;
+				break;
+
+			case C_ATTRIBUTE:
+				if ('/' == c) {
+					prs->tagtype = IKS_SINGLE;
+					prs->context = C_TAG_END;
+					break;
+				}
+				if ('>' == c) {
+					prs->context = C_TAG_END;
+					re = 1;
+					break;
+				}
+				if (!prs->atts) {
+					prs->attmax = 12;
+					prs->atts = iks_malloc (sizeof(char *) * 2 * 12);
+					if (!prs->atts) return IKS_NOMEM;
+					memset (prs->atts, 0, sizeof(char *) * 2 * 12);
+					prs->attcur = 0;
+				} else {
+					if (prs->attcur >= (prs->attmax * 2)) {
+						void *tmp;
+						prs->attmax += 12;
+						tmp = iks_malloc (sizeof(char *) * (2 * prs->attmax + 1));
+						if (!tmp) return IKS_NOMEM;
+						memset (tmp, 0, sizeof(char *) * (2 * prs->attmax + 1));
+						memcpy (tmp, prs->atts, sizeof(char *) * prs->attcur);
+						iks_free (prs->atts);
+						prs->atts = tmp;
+					}
+				}
+				prs->attflag = 1;
+				prs->atts[prs->attcur] = STACK_PUSH_START;
+				stack_old = pos;
+				prs->context = C_ATTRIBUTE_1;
+				break;
+
+			case C_ATTRIBUTE_1:
+				if ('=' == c) {
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					prs->context = C_VALUE;
+					break;
+				}
+				if (stack_old == -1) stack_old = pos;
+				break;
+
+			case C_ATTRIBUTE_2:
+				if ('/' == c) {
+					prs->tagtype = IKS_SINGLE;
+					prs->atts[prs->attcur] = NULL;
+					prs->context = C_TAG_END;
+					break;
+				}
+				if ('>' == c) {
+					prs->atts[prs->attcur] = NULL;
+					prs->context = C_TAG_END;
+					re = 1;
+					break;
+				}
+				prs->context = C_ATTRIBUTE;
+				re = 1;
+				break;
+
+			case C_VALUE:
+				prs->atts[prs->attcur + 1] = STACK_PUSH_START;
+				if ('\'' == c) {
+					prs->context = C_VALUE_APOS;
+					break;
+				}
+				if ('"' == c) {
+					prs->context = C_VALUE_QUOT;
+					break;
+				}
+				return IKS_BADXML;
+
+			case C_VALUE_APOS:
+				if ('\'' == c) {
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					prs->oldcontext = C_ATTRIBUTE_2;
+					prs->context = C_WHITESPACE;
+					prs->attcur += 2;
+				}
+				if (stack_old == -1) stack_old = pos;
+				break;
+
+			case C_VALUE_QUOT:
+				if ('"' == c) {
+					if (stack_old != -1) STACK_PUSH (buf + stack_old, pos - stack_old);
+					stack_old = -1;
+					STACK_PUSH_END;
+					prs->oldcontext = C_ATTRIBUTE_2;
+					prs->context = C_WHITESPACE;
+					prs->attcur += 2;
+				}
+				if (stack_old == -1) stack_old = pos;
+				break;
+
+			case C_WHITESPACE:
+				if (NOT_WHITESPACE(c)) {
+					prs->context = prs->oldcontext;
+					re = 1;
+				}
+				break;
+
+			case C_ENTITY:
+				if (';' == c) {
+					char hede[2];
+					char t = '?';
+					prs->entity[prs->entpos] = '\0';
+					if (strcmp(prs->entity, "amp") == 0)
+						t = '&';
+					else if (strcmp(prs->entity, "quot") == 0)
+						t = '"';
+					else if (strcmp(prs->entity, "apos") == 0)
+						t = '\'';
+					else if (strcmp(prs->entity, "lt") == 0)
+						t = '<';
+					else if (strcmp(prs->entity, "gt") == 0)
+						t = '>';
+					old = pos + 1;
+					hede[0] = t;
+					if (prs->cdataHook) {
+						err = prs->cdataHook (prs->user_data, &hede[0], 1);
+						if (IKS_OK != err) return err;
+					}
+					prs->context = C_CDATA;
+				} else {
+					prs->entity[prs->entpos++] = buf[pos];
+					if (prs->entpos > 7) return IKS_BADXML;
+				}
+				break;
+
+			case C_COMMENT:
+				if ('-' != c) return IKS_BADXML;
+				prs->context = C_COMMENT_1;
+				break;
+
+			case C_COMMENT_1:
+				if ('-' == c) prs->context = C_COMMENT_2;
+				break;
+
+			case C_COMMENT_2:
+				if ('-' == c)
+					prs->context = C_COMMENT_3;
+				else
+					prs->context = C_COMMENT_1;
+				break;
+
+			case C_COMMENT_3:
+				if ('>' != c) return IKS_BADXML;
+				prs->context = C_CDATA;
+				old = pos + 1;
+				break;
+
+			case C_MARKUP:
+				if ('[' == c) {
+					prs->context = C_SECT;
+					break;
+				}
+				if ('-' == c) {
+					prs->context = C_COMMENT;
+					break;
+				}
+				prs->context = C_MARKUP_1;
+
+			case C_MARKUP_1:
+				if ('>' == c) {
+					old = pos + 1;
+					prs->context = C_CDATA;
+				}
+				break;
+
+			case C_SECT:
+				if ('C' == c) {
+					prs->context = C_SECT_CDATA;
+					break;
+				}
+				return IKS_BADXML;
+
+			case C_SECT_CDATA:
+				if ('D' != c) return IKS_BADXML;
+				prs->context = C_SECT_CDATA_1;
+				break;
+
+			case C_SECT_CDATA_1:
+				if ('A' != c) return IKS_BADXML;
+				prs->context = C_SECT_CDATA_2;
+				break;
+
+			case C_SECT_CDATA_2:
+				if ('T' != c) return IKS_BADXML;
+				prs->context = C_SECT_CDATA_3;
+				break;
+
+			case C_SECT_CDATA_3:
+				if ('A' != c) return IKS_BADXML;
+				prs->context = C_SECT_CDATA_4;
+				break;
+
+			case C_SECT_CDATA_4:
+				if ('[' != c) return IKS_BADXML;
+				old = pos + 1;
+				prs->context = C_SECT_CDATA_C;
+				break;
+
+			case C_SECT_CDATA_C:
+				if (']' == c) {
+					prs->context = C_SECT_CDATA_E;
+					if (prs->cdataHook && old < pos) {
+						err = prs->cdataHook (prs->user_data, &buf[old], pos - old);
+						if (IKS_OK != err) return err;
+					}
+				}
+				break;
+
+			case C_SECT_CDATA_E:
+				if (']' == c) {
+					prs->context = C_SECT_CDATA_E2;
+				} else {
+					if (prs->cdataHook) {
+						err = prs->cdataHook (prs->user_data, "]", 1);
+						if (IKS_OK != err) return err;
+					}
+					old = pos;
+					prs->context = C_SECT_CDATA_C;
+				}
+				break;
+
+			case C_SECT_CDATA_E2:
+				if ('>' == c) {
+					old = pos + 1;
+					prs->context = C_CDATA;
+				} else {
+					if (prs->cdataHook) {
+						err = prs->cdataHook (prs->user_data, "]]", 2);
+						if (IKS_OK != err) return err;
+					}
+					old = pos;
+					prs->context = C_SECT_CDATA_C;
+				}
+				break;
+
+			case C_PI:
+				old = pos + 1;
+				if ('>' == c) prs->context = C_CDATA;
+				break;
+		}
+cont:
+		if (0 == re) {
+			pos++;
+			prs->nr_bytes++;
+			if ('\n' == c) prs->nr_lines++;
+		}
+	}
+
+	if (stack_old != -1)
+		STACK_PUSH (buf + stack_old, pos - stack_old);
+
+	err = IKS_OK;
+	if (prs->cdataHook && (prs->context == C_CDATA || prs->context == C_SECT_CDATA_C) && old < pos)
+		err = prs->cdataHook (prs->user_data, &buf[old], pos - old);
+	return err;
+}
+
+int
+iks_parse (iksparser *prs, const char *data, size_t len, int finish)
+{
+	if (!data) return IKS_OK;
+	if (len == 0) len = strlen (data);
+	return sax_core (prs, (char *) data, len);
+}
+
+void
+iks_parser_reset (iksparser *prs)
+{
+	if (prs->deleteHook) prs->deleteHook (prs->user_data);
+	prs->stack_pos = 0;
+	prs->context = 0;
+	prs->oldcontext = 0;
+	prs->tagtype = 0;
+	prs->attcur = 0;
+	prs->attflag = 0;
+	prs->valflag = 0;
+	prs->entpos = 0;
+	prs->nr_bytes = 0;
+	prs->nr_lines = 0;
+	prs->uni_max = 0;
+	prs->uni_len = 0;
+}
+
+void
+iks_parser_delete (iksparser *prs)
+{
+	if (prs->deleteHook) prs->deleteHook (prs->user_data);
+	if (prs->stack) iks_free (prs->stack);
+	if (prs->atts) iks_free (prs->atts);
+	if (prs->s) iks_stack_delete (prs->s); else iks_free (prs);
+}
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2004 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#include "common.h"
+#include "iksemel.h"
+
+#define IKS_COMMON \
+	struct iks_struct *next, *prev; \
+	struct iks_struct *parent; \
+	enum ikstype type; \
+	ikstack *s
+
+struct iks_struct {
+	IKS_COMMON;
+};
+
+struct iks_tag {
+	IKS_COMMON;
+	struct iks_struct *children, *last_child;
+	struct iks_struct *attribs, *last_attrib;
+	char *name;
+};
+
+#define IKS_TAG_NAME(x) ((struct iks_tag *) (x) )->name
+#define IKS_TAG_CHILDREN(x) ((struct iks_tag *) (x) )->children
+#define IKS_TAG_LAST_CHILD(x) ((struct iks_tag *) (x) )->last_child
+#define IKS_TAG_ATTRIBS(x) ((struct iks_tag *) (x) )->attribs
+#define IKS_TAG_LAST_ATTRIB(x) ((struct iks_tag *) (x) )->last_attrib
+
+struct iks_cdata {
+	IKS_COMMON;
+	char *cdata;
+	size_t len;
+};
+
+#define IKS_CDATA_CDATA(x) ((struct iks_cdata *) (x) )->cdata
+#define IKS_CDATA_LEN(x) ((struct iks_cdata *) (x) )->len
+
+struct iks_attrib {
+	IKS_COMMON;
+	char *name;
+	char *value;
+};
+
+#define IKS_ATTRIB_NAME(x) ((struct iks_attrib *) (x) )->name
+#define IKS_ATTRIB_VALUE(x) ((struct iks_attrib *) (x) )->value
+
+/*****  Node Creating & Deleting  *****/
+
+iks *
+iks_new (const char *name)
+{
+	ikstack *s;
+	iks *x;
+
+	s = iks_stack_new (sizeof (struct iks_tag) * 6, 256);
+	if (!s) return NULL;
+	x = iks_new_within (name, s);
+	if (!x) {
+		iks_stack_delete (s);
+		return NULL;
+	}
+	return x;
+}
+
+iks *
+iks_new_within (const char *name, ikstack *s)
+{
+	iks *x;
+	size_t len;
+
+	if (name) len = sizeof (struct iks_tag); else len = sizeof (struct iks_cdata);
+	x = iks_stack_alloc (s, len);
+	if (!x) return NULL;
+	memset (x, 0, len);
+	x->s = s;
+	x->type = IKS_TAG;
+	if (name) {
+		IKS_TAG_NAME (x) = iks_stack_strdup (s, name, 0);
+		if (!IKS_TAG_NAME (x)) return NULL;
+	}
+	return x;
+}
+
+iks *
+iks_insert (iks *x, const char *name)
+{
+	iks *y;
+
+	if (!x) return NULL;
+
+	y = iks_new_within (name, x->s);
+	if (!y) return NULL;
+	y->parent = x;
+	if (!IKS_TAG_CHILDREN (x)) IKS_TAG_CHILDREN (x) = y;
+	if (IKS_TAG_LAST_CHILD (x)) {
+		IKS_TAG_LAST_CHILD (x)->next = y;
+		y->prev = IKS_TAG_LAST_CHILD (x);
+	}
+	IKS_TAG_LAST_CHILD (x) = y;
+	return y;
+}
+
+iks *
+iks_insert_cdata (iks *x, const char *data, size_t len)
+{
+	iks *y;
+
+	if(!x || !data) return NULL;
+	if(len == 0) len = strlen (data);
+
+	y = IKS_TAG_LAST_CHILD (x);
+	if (y && y->type == IKS_CDATA) {
+		IKS_CDATA_CDATA (y) = iks_stack_strcat (x->s, IKS_CDATA_CDATA (y), IKS_CDATA_LEN (y), data, len);
+		IKS_CDATA_LEN (y) += len;
+	} else {
+		y = iks_insert (x, NULL);
+		if (!y) return NULL;
+		y->type = IKS_CDATA;
+		IKS_CDATA_CDATA (y) = iks_stack_strdup (x->s, data, len);
+		if (!IKS_CDATA_CDATA (y)) return NULL;
+		IKS_CDATA_LEN (y) = len;
+	}
+	return y;
+}
+
+iks *
+iks_insert_attrib (iks *x, const char *name, const char *value)
+{
+	iks *y;
+	size_t len;
+
+	if (!x) return NULL;
+
+	y = IKS_TAG_ATTRIBS (x);
+	while (y) {
+		if (strcmp (name, IKS_ATTRIB_NAME (y)) == 0) break;
+		y = y->next;
+	}
+	if (NULL == y) {
+		if (!value) return NULL;
+		y = iks_stack_alloc (x->s, sizeof (struct iks_attrib));
+		if (!y) return NULL;
+		memset (y, 0, sizeof (struct iks_attrib));
+		y->type = IKS_ATTRIBUTE;
+		IKS_ATTRIB_NAME (y) = iks_stack_strdup (x->s, name, 0);
+		y->parent = x;
+		if (!IKS_TAG_ATTRIBS (x)) IKS_TAG_ATTRIBS (x) = y;
+		if (IKS_TAG_LAST_ATTRIB (x)) {
+			IKS_TAG_LAST_ATTRIB (x)->next = y;
+			y->prev = IKS_TAG_LAST_ATTRIB (x);
+		}
+		IKS_TAG_LAST_ATTRIB (x) = y;
+	}
+
+	if (value) {
+		len = strlen (value);
+		IKS_ATTRIB_VALUE (y) = iks_stack_strdup (x->s, value, len);
+		if (!IKS_ATTRIB_VALUE (y)) return NULL;
+	} else {
+		if (y->next) y->next->prev = y->prev;
+		if (y->prev) y->prev->next = y->next;
+		if (IKS_TAG_ATTRIBS (x) == y) IKS_TAG_ATTRIBS (x) = y->next;
+		if (IKS_TAG_LAST_ATTRIB (x) == y) IKS_TAG_LAST_ATTRIB (x) = y->prev;
+	}
+
+	return y;
+}
+
+iks *
+iks_insert_node (iks *x, iks *y)
+{
+	y->parent = x;
+	if (!IKS_TAG_CHILDREN (x)) IKS_TAG_CHILDREN (x) = y;
+	if (IKS_TAG_LAST_CHILD (x)) {
+		IKS_TAG_LAST_CHILD (x)->next = y;
+		y->prev = IKS_TAG_LAST_CHILD (x);
+	}
+	IKS_TAG_LAST_CHILD (x) = y;
+	return y;
+}
+
+void
+iks_hide (iks *x)
+{
+	iks *y;
+
+	if (!x) return;
+
+	if (x->prev) x->prev->next = x->next;
+	if (x->next) x->next->prev = x->prev;
+	y = x->parent;
+	if (y) {
+		if (IKS_TAG_CHILDREN (y) == x) IKS_TAG_CHILDREN (y) = x->next;
+		if (IKS_TAG_LAST_CHILD (y) == x) IKS_TAG_LAST_CHILD (y) = x->prev;
+	}
+}
+
+void
+iks_delete (iks *x)
+{
+	if (x) iks_stack_delete (x->s);
+}
+
+/*****  Node Traversing  *****/
+
+iks *
+iks_next (iks *x)
+{
+	if (x) return x->next;
+	return NULL;
+}
+
+iks *
+iks_next_tag (iks *x)
+{
+	if (x) {
+		while (1) {
+			x = x->next;
+			if (NULL == x) break;
+			if (IKS_TAG == x->type) return x;
+		}
+	}
+	return NULL;
+}
+
+iks *
+iks_prev (iks *x)
+{
+	if (x) return x->prev;
+	return NULL;
+}
+
+iks *
+iks_prev_tag (iks *x)
+{
+	if (x) {
+		while (1) {
+			x = x->prev;
+			if (NULL == x) break;
+			if (IKS_TAG == x->type) return x;
+		}
+	}
+	return NULL;
+}
+
+iks *
+iks_parent (iks *x)
+{
+	if (x) return x->parent;
+	return NULL;
+}
+
+iks *
+iks_root (iks *x)
+{
+	if (x) {
+		while (x->parent)
+			x = x->parent;
+	}
+	return x;
+}
+
+iks *
+iks_child (iks *x)
+{
+	if (x) return IKS_TAG_CHILDREN (x);
+	return NULL;
+}
+
+iks *
+iks_first_tag (iks *x)
+{
+	if (x) {
+		x = IKS_TAG_CHILDREN (x);
+		while (x) {
+			if (IKS_TAG == x->type) return x;
+			x = x->next;
+		}
+	}
+	return NULL;
+}
+
+iks *
+iks_attrib (iks *x)
+{
+	if (x) return IKS_TAG_ATTRIBS (x);
+	return NULL;
+}
+
+iks *
+iks_find (iks *x, const char *name)
+{
+	iks *y;
+
+	if (!x) return NULL;
+	y = IKS_TAG_CHILDREN (x);
+	while (y) {
+		if (IKS_TAG == y->type && IKS_TAG_NAME (y) && strcmp (IKS_TAG_NAME (y), name) == 0) return y;
+		y = y->next;
+	}
+	return NULL;
+}
+
+char *
+iks_find_cdata (iks *x, const char *name)
+{
+	iks *y;
+
+	y = iks_find (x, name);
+	if (!y) return NULL;
+	y = IKS_TAG_CHILDREN (y);
+	if (!y || IKS_CDATA != y->type) return NULL;
+	return IKS_CDATA_CDATA (y);
+}
+
+char *
+iks_find_attrib (iks *x, const char *name)
+{
+	iks *y;
+
+	if (!x) return NULL;
+
+	y = IKS_TAG_ATTRIBS (x);
+	while (y) {
+		if (IKS_ATTRIB_NAME (y) && strcmp (IKS_ATTRIB_NAME (y), name) == 0)
+			return IKS_ATTRIB_VALUE (y);
+		y = y->next;
+	}
+	return NULL;
+}
+
+iks *
+iks_find_with_attrib (iks *x, const char *tagname, const char *attrname, const char *value)
+{
+	iks *y;
+
+	if (NULL == x) return NULL;
+
+	if (tagname) {
+		for (y = IKS_TAG_CHILDREN (x); y; y = y->next) {
+			if (IKS_TAG == y->type
+				&& strcmp (IKS_TAG_NAME (y), tagname) == 0
+				&& iks_strcmp (iks_find_attrib (y, attrname), value) == 0) {
+					return y;
+			}
+		}
+	} else {
+		for (y = IKS_TAG_CHILDREN (x); y; y = y->next) {
+			if (IKS_TAG == y->type
+				&& iks_strcmp (iks_find_attrib (y, attrname), value) == 0) {
+					return y;
+			}
+		}
+	}
+	return NULL;
+}
+
+/*****  Node Information  *****/
+
+ikstack *
+iks_stack (iks *x)
+{
+	if (x) return x->s;
+	return NULL;
+}
+
+enum ikstype
+iks_type (iks *x)
+{
+	if (x) return x->type;
+	return IKS_NONE;
+}
+
+char *
+iks_name (iks *x)
+{
+	if (x) {
+		if (IKS_TAG == x->type)
+			return IKS_TAG_NAME (x);
+		else
+			return IKS_ATTRIB_NAME (x);
+	}
+	return NULL;
+}
+
+char *
+iks_cdata (iks *x)
+{
+	if (x) {
+		if (IKS_CDATA == x->type)
+			return IKS_CDATA_CDATA (x);
+		else
+			return IKS_ATTRIB_VALUE (x);
+	}
+	return NULL;
+}
+
+size_t
+iks_cdata_size (iks *x)
+{
+	if (x) return IKS_CDATA_LEN (x);
+	return 0;
+}
+
+int
+iks_has_children (iks *x)
+{
+	if (x && IKS_TAG == x->type && IKS_TAG_CHILDREN (x)) return 1;
+	return 0;
+}
+
+int
+iks_has_attribs (iks *x)
+{
+	if (x && IKS_TAG == x->type && IKS_TAG_ATTRIBS (x)) return 1;
+	return 0;
+}
+
+/*****  Serializing  *****/
+
+static size_t
+escape_size (char *src, size_t len)
+{
+	size_t sz;
+	char c;
+	int i;
+
+	sz = 0;
+	for (i = 0; i < len; i++) {
+		c = src[i];
+		switch (c) {
+			case '&': sz += 5; break;
+			case '\'': sz += 6; break;
+			case '"': sz += 6; break;
+			case '<': sz += 4; break;
+			case '>': sz += 4; break;
+			default: sz++; break;
+		}
+	}
+	return sz;
+}
+
+static char *
+my_strcat (char *dest, char *src, size_t len)
+{
+	if (0 == len) len = strlen (src);
+	memcpy (dest, src, len);
+	return dest + len;
+}
+
+static char *
+escape (char *dest, char *src, size_t len)
+{
+	char c;
+	int i;
+	int j = 0;
+
+	for (i = 0; i < len; i++) {
+		c = src[i];
+		if ('&' == c || '<' == c || '>' == c || '\'' == c || '"' == c) {
+			if (i - j > 0) dest = my_strcat (dest, src + j, i - j);
+			j = i + 1;
+			switch (c) {
+			case '&': dest = my_strcat (dest, "&amp;", 5); break;
+			case '\'': dest = my_strcat (dest, "&apos;", 6); break;
+			case '"': dest = my_strcat (dest, "&quot;", 6); break;
+			case '<': dest = my_strcat (dest, "&lt;", 4); break;
+			case '>': dest = my_strcat (dest, "&gt;", 4); break;
+			}
+		}
+	}
+	if (i - j > 0) dest = my_strcat (dest, src + j, i - j);
+	return dest;
+}
+
+char *
+iks_string (ikstack *s, iks *x)
+{
+	size_t size;
+	int level, dir;
+	iks *y, *z;
+	char *ret, *t;
+
+	if (!x) return NULL;
+
+	if (x->type == IKS_CDATA) {
+		if (s) {
+			return iks_stack_strdup (s, IKS_CDATA_CDATA (x), IKS_CDATA_LEN (x));
+		} else {
+			ret = iks_malloc (IKS_CDATA_LEN (x));
+			memcpy (ret, IKS_CDATA_CDATA (x), IKS_CDATA_LEN (x));
+			return ret;
+		}
+	}
+
+	size = 0;
+	level = 0;
+	dir = 0;
+	y = x;
+	while (1) {
+		if (dir==0) {
+			if (y->type == IKS_TAG) {
+				size++;
+				size += strlen (IKS_TAG_NAME (y));
+				for (z = IKS_TAG_ATTRIBS (y); z; z = z->next) {
+					size += 4 + strlen (IKS_ATTRIB_NAME (z))
+						+ escape_size (IKS_ATTRIB_VALUE (z), strlen (IKS_ATTRIB_VALUE (z)));
+				}
+				if (IKS_TAG_CHILDREN (y)) {
+					size++;
+					y = IKS_TAG_CHILDREN (y);
+					level++;
+					continue;
+				} else {
+					size += 2;
+				}
+			} else {
+				size += escape_size (IKS_CDATA_CDATA (y), IKS_CDATA_LEN (y));
+			}
+		}
+		z = y->next;
+		if (z) {
+			if (0 == level) {
+				if (IKS_TAG_CHILDREN (y)) size += 3 + strlen (IKS_TAG_NAME (y));
+				break;
+			}
+			y = z;
+			dir = 0;
+		} else {
+			y = y->parent;
+			level--;
+			if (level >= 0) size += 3 + strlen (IKS_TAG_NAME (y));
+			if (level < 1) break;
+			dir = 1;
+		}
+	}
+
+	if (s) ret = iks_stack_alloc (s, size + 1);
+	else ret = iks_malloc (size + 1);
+
+	if (!ret) return NULL;
+
+	t = ret;
+	level = 0;
+	dir = 0;
+	while (1) {
+		if (dir==0) {
+			if (x->type == IKS_TAG) {
+				*t++ = '<';
+				t = my_strcat (t, IKS_TAG_NAME (x), 0);
+				y = IKS_TAG_ATTRIBS (x);
+				while (y) {
+					*t++ = ' ';
+					t = my_strcat (t, IKS_ATTRIB_NAME (y), 0);
+					*t++ = '=';
+					*t++ = '\'';
+					t = escape (t, IKS_ATTRIB_VALUE (y), strlen (IKS_ATTRIB_VALUE (y)));
+					*t++ = '\'';
+					y = y->next;
+				}
+				if (IKS_TAG_CHILDREN (x)) {
+					*t++ = '>';
+					x = IKS_TAG_CHILDREN (x);
+					level++;
+					continue;
+				} else {
+					*t++ = '/';
+					*t++ = '>';
+				}
+			} else {
+				t = escape (t, IKS_CDATA_CDATA (x), IKS_CDATA_LEN (x));
+			}
+		}
+		y = x->next;
+		if (y) {
+			if (0 == level) {
+				if (IKS_TAG_CHILDREN (x)) {
+					*t++ = '<';
+					*t++ = '/';
+					t = my_strcat (t, IKS_TAG_NAME (x), 0);
+					*t++ = '>';
+				}
+				break;
+			}
+			x = y;
+			dir = 0;
+		} else {
+			x = x->parent;
+			level--;
+			if (level >= 0) {
+					*t++ = '<';
+					*t++ = '/';
+					t = my_strcat (t, IKS_TAG_NAME (x), 0);
+					*t++ = '>';
+				}
+			if (level < 1) break;
+			dir = 1;
+		}
+	}
+	*t = '\0';
+
+	return ret;
+}
+
+/*****  Copying  *****/
+
+iks *
+iks_copy_within (iks *x, ikstack *s)
+{
+	int level=0, dir=0;
+	iks *copy = NULL;
+	iks *cur = NULL;
+	iks *y;
+
+	while (1) {
+		if (dir == 0) {
+			if (x->type == IKS_TAG) {
+				if (copy == NULL) {
+					copy = iks_new_within (IKS_TAG_NAME (x), s);
+					cur = copy;
+				} else {
+					cur = iks_insert (cur, IKS_TAG_NAME (x));
+				}
+				for (y = IKS_TAG_ATTRIBS (x); y; y = y->next) {
+					iks_insert_attrib (cur, IKS_ATTRIB_NAME (y), IKS_ATTRIB_VALUE (y));
+				}
+				if (IKS_TAG_CHILDREN (x)) {
+					x = IKS_TAG_CHILDREN (x);
+					level++;
+					continue;
+				} else {
+					cur = cur->parent;
+				}
+			} else {
+				iks_insert_cdata (cur, IKS_CDATA_CDATA (x), IKS_CDATA_LEN (x));
+			}
+		}
+		y = x->next;
+		if (y) {
+			if (0 == level) break;
+			x = y;
+			dir = 0;
+		} else {
+			if (level < 2) break;
+			level--;
+			x = x->parent;
+			cur = cur->parent;
+			dir = 1;
+		}
+	}
+	return copy;
+}
+
+iks *
+iks_copy (iks *x)
+{
+	return iks_copy_within (x, iks_stack_new (sizeof (struct iks_tag) * 6, 256));
+}
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2003 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#include "common.h"
+#include "iksemel.h"
+
+struct dom_data {
+	iks **iksptr;
+	iks *current;
+	size_t chunk_size;
+};
+
+static int
+tagHook (struct dom_data *data, char *name, char **atts, int type)
+{
+	iks *x;
+
+	if (IKS_OPEN == type || IKS_SINGLE == type) {
+		if (data->current) {
+			x = iks_insert (data->current, name);
+		} else {
+			ikstack *s;
+			s = iks_stack_new (data->chunk_size, data->chunk_size);
+			x = iks_new_within (name, s);
+		}
+		if (atts) {
+			int i=0;
+			while (atts[i]) {
+				iks_insert_attrib (x, atts[i], atts[i+1]);
+				i += 2;
+			}
+		}
+		data->current = x;
+	}
+	if (IKS_CLOSE == type || IKS_SINGLE == type) {
+		x = iks_parent (data->current);
+		if (x)
+			data->current = x;
+		else {
+			*(data->iksptr) = data->current;
+			data->current = NULL;
+		}
+	}
+	return IKS_OK;
+}
+
+static int
+cdataHook (struct dom_data *data, char *cdata, size_t len)
+{
+	if (data->current) iks_insert_cdata (data->current, cdata, len);
+	return IKS_OK;
+}
+
+static void
+deleteHook (struct dom_data *data)
+{
+	if (data->current) iks_delete (data->current);
+	data->current = NULL;
+}
+
+iksparser *
+iks_dom_new (iks **iksptr)
+{
+	ikstack *s;
+	struct dom_data *data;
+
+	*iksptr = NULL;
+	s = iks_stack_new (DEFAULT_DOM_CHUNK_SIZE, 0);
+	if (!s) return NULL;
+	data = iks_stack_alloc (s, sizeof (struct dom_data));
+	data->iksptr = iksptr;
+	data->current = NULL;
+	data->chunk_size = DEFAULT_DOM_IKS_CHUNK_SIZE;
+	return iks_sax_extend (s, data, (iksTagHook *) tagHook, (iksCDataHook *) cdataHook, (iksDeleteHook *) deleteHook);
+}
+
+void
+iks_set_size_hint (iksparser *prs, size_t approx_size)
+{
+	size_t cs;
+	struct dom_data *data = iks_user_data (prs);
+
+	cs = approx_size / 10;
+	if (cs < DEFAULT_DOM_IKS_CHUNK_SIZE) cs = DEFAULT_DOM_IKS_CHUNK_SIZE;
+	data->chunk_size = cs;
+}
+
+iks *
+iks_tree (const char *xml_str, size_t len, int *err)
+{
+	iksparser *prs;
+	iks *x;
+	int e;
+
+	if (0 == len) len = strlen (xml_str);
+	prs = iks_dom_new (&x);
+	if (!prs) {
+		if (err) *err = IKS_NOMEM;
+		return NULL;
+	}
+	e = iks_parse (prs, xml_str, len, 1);
+	if (err) *err = e;
+	iks_parser_delete (prs);
+	return x;
+}
+
+int
+iks_load (const char *fname, iks **xptr)
+{
+	iksparser *prs;
+	char *buf;
+	FILE *f;
+	int len, done = 0;
+	int ret;
+
+	*xptr = NULL;
+
+	buf = iks_malloc (FILE_IO_BUF_SIZE);
+	if (!buf) return IKS_NOMEM;
+	ret = IKS_NOMEM;
+	prs = iks_dom_new (xptr);
+	if (prs) {
+		f = fopen (fname, "r");
+		if (f) {
+			while (0 == done) {
+				len = fread (buf, 1, FILE_IO_BUF_SIZE, f);
+				if (len < FILE_IO_BUF_SIZE) {
+					if (0 == feof (f)) {
+						ret = IKS_FILE_RWERR;
+						len = 0;
+					}
+					done = 1;
+				}
+				if (len > 0) {
+					int e;
+					e = iks_parse (prs, buf, len, done);
+					if (IKS_OK != e) {
+						ret = e;
+						break;
+					}
+					if (done) ret = IKS_OK;
+				}
+			}
+			fclose (f);
+		} else {
+			if (ENOENT == errno) ret = IKS_FILE_NOFILE;
+			else ret = IKS_FILE_NOACCESS;
+		}
+		iks_parser_delete (prs);
+	}
+	iks_free (buf);
+	return ret;
+}
+
+int
+iks_save (const char *fname, iks *x)
+{
+	FILE *f;
+	char *data;
+	int ret;
+
+	ret = IKS_NOMEM;
+	data = iks_string (NULL, x);
+	if (data) {
+		ret = IKS_FILE_NOACCESS;
+		f = fopen (fname, "w");
+		if (f) {
+			ret = IKS_FILE_RWERR;
+			if (fputs (data, f) >= 0) ret = IKS_OK;
+			fclose (f);
+		}
+		iks_free (data);
+	}
+	return ret;
+}
diff --git a/backend/impress/iksemel.h b/backend/impress/iksemel.h
new file mode 100644
index 00000000..66c87d61
--- /dev/null
+++ b/backend/impress/iksemel.h
@@ -0,0 +1,402 @@
+/* iksemel (XML parser for Jabber)
+** Copyright (C) 2000-2004 Gurer Ozen <[email protected]>
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU Lesser General Public License.
+*/
+
+#ifndef IKSEMEL_H
+#define IKSEMEL_H 1
+
+#ifdef __cplusplus
+#include <cstddef>	/* size_t for C++ */
+extern "C" {
+#else
+#include <stddef.h>	/* size_t for C */
+#endif
+
+/*****  object stack  *****/
+
+struct ikstack_struct;
+typedef struct ikstack_struct ikstack;
+
+ikstack *iks_stack_new (size_t meta_chunk, size_t data_chunk);
+void *iks_stack_alloc (ikstack *s, size_t size);
+char *iks_stack_strdup (ikstack *s, const char *src, size_t len);
+char *iks_stack_strcat (ikstack *s, char *old, size_t old_len, const char *src, size_t src_len);
+void iks_stack_stat (ikstack *s, size_t *allocated, size_t *used);
+void iks_stack_delete (ikstack *s);
+
+/*****  utilities  *****/
+
+void *iks_malloc (size_t size);
+void iks_free (void *ptr);
+void iks_set_mem_funcs (void *(*malloc_func)(size_t size), void (*free_func)(void *ptr));
+
+char *iks_strdup (const char *src);
+char *iks_strcat (char *dest, const char *src);
+int iks_strcmp (const char *a, const char *b);
+int iks_strcasecmp (const char *a, const char *b);
+int iks_strncmp (const char *a, const char *b, size_t n);
+int iks_strncasecmp (const char *a, const char *b, size_t n);
+size_t iks_strlen (const char *src);
+char *iks_escape (ikstack *s, char *src, size_t len);
+char *iks_unescape (ikstack *s, char *src, size_t len);
+
+/*****  dom tree  *****/
+
+enum ikstype {
+	IKS_NONE = 0,
+	IKS_TAG,
+	IKS_ATTRIBUTE,
+	IKS_CDATA
+};
+
+struct iks_struct;
+typedef struct iks_struct iks;
+
+iks *iks_new (const char *name);
+iks *iks_new_within (const char *name, ikstack *s);
+iks *iks_insert (iks *x, const char *name);
+iks *iks_insert_cdata (iks *x, const char *data, size_t len);
+iks *iks_insert_attrib (iks *x, const char *name, const char *value);
+iks *iks_insert_node (iks *x, iks *y);
+void iks_hide (iks *x);
+void iks_delete (iks *x);
+iks *iks_next (iks *x);
+iks *iks_next_tag (iks *x);
+iks *iks_prev (iks *x);
+iks *iks_prev_tag (iks *x);
+iks *iks_parent (iks *x);
+iks *iks_root (iks *x);
+iks *iks_child (iks *x);
+iks *iks_first_tag (iks *x);
+iks *iks_attrib (iks *x);
+iks *iks_find (iks *x, const char *name);
+char *iks_find_cdata (iks *x, const char *name);
+char *iks_find_attrib (iks *x, const char *name);
+iks *iks_find_with_attrib (iks *x, const char *tagname, const char *attrname, const char *value);
+ikstack *iks_stack (iks *x);
+enum ikstype iks_type (iks *x);
+char *iks_name (iks *x);
+char *iks_cdata (iks *x);
+size_t iks_cdata_size (iks *x);
+int iks_has_children (iks *x);
+int iks_has_attribs (iks *x);
+char *iks_string (ikstack *s, iks *x);
+iks *iks_copy (iks *x);
+iks *iks_copy_within (iks *x, ikstack *s);
+
+/*****  sax parser  *****/
+
+enum ikserror {
+	IKS_OK = 0,
+	IKS_NOMEM,
+	IKS_BADXML,
+	IKS_HOOK
+};
+
+enum ikstagtype {
+	IKS_OPEN,
+	IKS_CLOSE,
+	IKS_SINGLE
+};
+
+typedef int (iksTagHook)(void *user_data, char *name, char **atts, int type);
+typedef int (iksCDataHook)(void *user_data, char *data, size_t len);
+typedef void (iksDeleteHook)(void *user_data);
+
+struct iksparser_struct;
+typedef struct iksparser_struct  iksparser;
+
+iksparser *iks_sax_new (void *user_data, iksTagHook *tagHook, iksCDataHook *cdataHook);
+iksparser *iks_sax_extend (ikstack *s, void *user_data, iksTagHook *tagHook, iksCDataHook *cdataHook, iksDeleteHook *deleteHook);
+ikstack *iks_parser_stack (iksparser *prs);
+void *iks_user_data (iksparser *prs);
+unsigned long iks_nr_bytes (iksparser *prs);
+unsigned long iks_nr_lines (iksparser *prs);
+int iks_parse (iksparser *prs, const char *data, size_t len, int finish);
+void iks_parser_reset (iksparser *prs);
+void iks_parser_delete (iksparser *prs);
+
+/*****  dom parser  *****/
+
+enum iksfileerror {
+	IKS_FILE_NOFILE = 4,
+	IKS_FILE_NOACCESS,
+	IKS_FILE_RWERR
+};
+
+iksparser *iks_dom_new (iks **iksptr);
+void iks_set_size_hint (iksparser *prs, size_t approx_size);
+iks *iks_tree (const char *xml_str, size_t len, int *err);
+int iks_load (const char *fname, iks **xptr);
+int iks_save (const char *fname, iks *x);
+
+/*****  transport layer  *****/
+
+typedef void (iksTClose)(void *socket);
+typedef int (iksTConnect)(iksparser *prs, void **socketptr, const char *server, int port);
+typedef int (iksTSend)(void *socket, const char *data, size_t len);
+typedef int (iksTRecv)(void *socket, char *buffer, size_t buf_len, int timeout);
+typedef int (iksTConnectFD)(iksparser *prs, void **socketptr, void *fd);
+typedef void *(iksTGetFD)(void *socket);
+
+enum iksasyncevents {
+	IKS_ASYNC_RESOLVED,
+	IKS_ASYNC_CONNECTED,
+	IKS_ASYNC_WRITE,
+	IKS_ASYNC_WRITTEN,
+	IKS_ASYNC_READ,
+	IKS_ASYNC_CLOSED,
+	IKS_ASYNC_ERROR
+};
+
+typedef int (iksAsyncNotify)(void *user_data, int event, void *event_data);
+typedef int (iksTConnectAsync)(iksparser *prs, void **socketptr, const char *server, int port, void *notify_data, iksAsyncNotify *notify_func);
+
+typedef struct ikstransport_struct {
+	/* basic api, connect can be NULL if one of the other connect funcs are used */
+	iksTConnect *connect;
+	iksTSend *send;
+	iksTRecv *recv;
+	iksTClose *close;
+	/* optional fd api */
+	iksTConnectFD *connect_fd;
+	iksTGetFD *get_fd;
+	/* optional async api */
+	iksTConnectAsync *connect_async;
+} ikstransport;
+
+extern ikstransport iks_default_transport;
+
+/*****  stream parser  *****/
+
+enum iksneterror {
+	IKS_NET_NODNS = 4,
+	IKS_NET_NOSOCK,
+	IKS_NET_NOCONN,
+	IKS_NET_RWERR,
+	IKS_NET_NOTSUPP,
+	IKS_NET_TLSFAIL
+};
+
+enum iksnodetype {
+	IKS_NODE_START,
+	IKS_NODE_NORMAL,
+	IKS_NODE_ERROR,
+	IKS_NODE_STOP
+};
+
+enum ikssasltype {
+	IKS_SASL_PLAIN,
+	IKS_SASL_DIGEST_MD5
+};
+
+#define IKS_JABBER_PORT 5222
+
+typedef int (iksStreamHook)(void *user_data, int type, iks *node);
+typedef void (iksLogHook)(void *user_data, const char *data, size_t size, int is_incoming);
+
+iksparser *iks_stream_new (char *name_space, void *user_data, iksStreamHook *streamHook);
+void *iks_stream_user_data (iksparser *prs);
+void iks_set_log_hook (iksparser *prs, iksLogHook *logHook);
+int iks_connect_tcp (iksparser *prs, const char *server, int port);
+int iks_connect_fd (iksparser *prs, int fd);
+int iks_connect_via (iksparser *prs, const char *server, int port, const char *server_name);
+int iks_connect_with (iksparser *prs, const char *server, int port, const char *server_name, ikstransport *trans);
+int iks_connect_async (iksparser *prs, const char *server, int port, void *notify_data, iksAsyncNotify *notify_func);
+int iks_connect_async_with (iksparser *prs, const char *server, int port, const char *server_name, ikstransport *trans, void *notify_data, iksAsyncNotify *notify_func);
+int iks_fd (iksparser *prs);
+int iks_recv (iksparser *prs, int timeout);
+int iks_send_header (iksparser *prs, const char *to);
+int iks_send (iksparser *prs, iks *x);
+int iks_send_raw (iksparser *prs, const char *xmlstr);
+void iks_disconnect (iksparser *prs);
+int iks_has_tls (void);
+int iks_is_secure (iksparser *prs);
+int iks_start_tls (iksparser *prs);
+int iks_start_sasl (iksparser *prs, enum ikssasltype type, char *username, char *pass);
+
+/*****  jabber  *****/
+
+#define IKS_NS_CLIENT     "jabber:client"
+#define IKS_NS_SERVER     "jabber:server"
+#define IKS_NS_AUTH       "jabber:iq:auth"
+#define IKS_NS_AUTH_0K    "jabber:iq:auth:0k"
+#define IKS_NS_REGISTER   "jabber:iq:register"
+#define IKS_NS_ROSTER     "jabber:iq:roster"
+#define IKS_NS_XROSTER	"jabber:x:roster"
+#define IKS_NS_OFFLINE    "jabber:x:offline"
+#define IKS_NS_AGENT      "jabber:iq:agent"
+#define IKS_NS_AGENTS     "jabber:iq:agents"
+#define IKS_NS_BROWSE     "jabber:iq:browse"
+#define IKS_NS_CONFERENCE "jabber:iq:conference"
+#define IKS_NS_DELAY      "jabber:x:delay"
+#define IKS_NS_VERSION    "jabber:iq:version"
+#define IKS_NS_TIME       "jabber:iq:time"
+#define IKS_NS_VCARD      "vcard-temp"
+#define IKS_NS_PRIVATE    "jabber:iq:private"
+#define IKS_NS_SEARCH     "jabber:iq:search"
+#define IKS_NS_OOB        "jabber:iq:oob"
+#define IKS_NS_XOOB       "jabber:x:oob"
+#define IKS_NS_ADMIN      "jabber:iq:admin"
+#define IKS_NS_FILTER     "jabber:iq:filter"
+#define IKS_NS_GATEWAY    "jabber:iq:gateway"
+#define IKS_NS_LAST       "jabber:iq:last"
+#define IKS_NS_SIGNED     "jabber:x:signed"
+#define IKS_NS_ENCRYPTED  "jabber:x:encrypted"
+#define IKS_NS_ENVELOPE   "jabber:x:envelope"
+#define IKS_NS_EVENT      "jabber:x:event"
+#define IKS_NS_EXPIRE     "jabber:x:expire"
+#define IKS_NS_XHTML      "http://www.w3.org/1999/xhtml"
+#define IKS_NS_XMPP_SASL  "urn:ietf:params:xml:ns:xmpp-sasl"
+#define IKS_NS_XMPP_BIND  "urn:ietf:params:xml:ns:xmpp-bind"
+#define IKS_NS_XMPP_SESSION  "urn:ietf:params:xml:ns:xmpp-session"
+
+#define IKS_ID_USER 1
+#define IKS_ID_SERVER 2
+#define IKS_ID_RESOURCE 4
+#define IKS_ID_PARTIAL IKS_ID_USER | IKS_ID_SERVER
+#define IKS_ID_FULL IKS_ID_USER | IKS_ID_SERVER | IKS_ID_RESOURCE
+
+#define IKS_STREAM_STARTTLS                   1
+#define IKS_STREAM_SESSION                    2
+#define IKS_STREAM_BIND                       4
+#define IKS_STREAM_SASL_PLAIN                 8
+#define IKS_STREAM_SASL_MD5                  16
+
+typedef struct iksid_struct {
+	char *user;
+	char *server;
+	char *resource;
+	char *partial;
+	char *full;
+} iksid;
+
+iksid *iks_id_new (ikstack *s, const char *jid);
+int iks_id_cmp (iksid *a, iksid *b, int parts);
+
+enum ikspaktype {
+	IKS_PAK_NONE = 0,
+	IKS_PAK_MESSAGE,
+	IKS_PAK_PRESENCE,
+	IKS_PAK_IQ,
+	IKS_PAK_S10N
+};
+
+enum iksubtype {
+	IKS_TYPE_NONE = 0,
+	IKS_TYPE_ERROR,
+
+	IKS_TYPE_CHAT,
+	IKS_TYPE_GROUPCHAT,
+	IKS_TYPE_HEADLINE,
+
+	IKS_TYPE_GET,
+	IKS_TYPE_SET,
+	IKS_TYPE_RESULT,
+
+	IKS_TYPE_SUBSCRIBE,
+	IKS_TYPE_SUBSCRIBED,
+	IKS_TYPE_UNSUBSCRIBE,
+	IKS_TYPE_UNSUBSCRIBED,
+	IKS_TYPE_PROBE,
+	IKS_TYPE_AVAILABLE,
+	IKS_TYPE_UNAVAILABLE
+};
+
+enum ikshowtype {
+	IKS_SHOW_UNAVAILABLE = 0,
+	IKS_SHOW_AVAILABLE,
+	IKS_SHOW_CHAT,
+	IKS_SHOW_AWAY,
+	IKS_SHOW_XA,
+	IKS_SHOW_DND
+};
+
+typedef struct ikspak_struct {
+	iks *x;
+	iksid *from;
+	iks *query;
+	char *ns;
+	char *id;
+	enum ikspaktype type;
+	enum iksubtype subtype;
+	enum ikshowtype show;
+} ikspak;
+
+ikspak *iks_packet (iks *x);
+
+iks *iks_make_auth (iksid *id, const char *pass, const char *sid);
+iks *iks_make_msg (enum iksubtype type, const char *to, const char *body);
+iks *iks_make_s10n (enum iksubtype type, const char *to, const char *msg);
+iks *iks_make_pres (enum ikshowtype show, const char *status);
+iks *iks_make_iq (enum iksubtype type, const char *xmlns);
+iks *iks_make_resource_bind(iksid *id);
+iks *iks_make_session(void);
+int iks_stream_features(iks *x);
+
+/*****  jabber packet filter  *****/
+
+#define IKS_RULE_DONE 0
+#define IKS_RULE_ID 1
+#define IKS_RULE_TYPE 2
+#define IKS_RULE_SUBTYPE 4
+#define IKS_RULE_FROM 8
+#define IKS_RULE_FROM_PARTIAL 16
+#define IKS_RULE_NS 32
+
+enum iksfilterret {
+	IKS_FILTER_PASS,
+	IKS_FILTER_EAT
+};
+
+typedef int (iksFilterHook)(void *user_data, ikspak *pak);
+
+struct iksfilter_struct;
+typedef struct iksfilter_struct iksfilter;
+struct iksrule_struct;
+typedef struct iksrule_struct iksrule;
+
+iksfilter *iks_filter_new (void);
+iksrule *iks_filter_add_rule (iksfilter *f, iksFilterHook *filterHook, void *user_data, ...);
+void iks_filter_remove_rule (iksfilter *f, iksrule *rule);
+void iks_filter_remove_hook (iksfilter *f, iksFilterHook *filterHook);
+void iks_filter_packet (iksfilter *f, ikspak *pak);
+void iks_filter_delete (iksfilter *f);
+
+/*****  sha1  *****/
+
+struct iksha_struct;
+typedef struct iksha_struct iksha;
+
+iksha *iks_sha_new (void);
+void iks_sha_reset (iksha *sha);
+void iks_sha_hash (iksha *sha, const unsigned char *data, size_t len, int finish);
+void iks_sha_print (iksha *sha, char *hash);
+void iks_sha_delete (iksha *sha);
+void iks_sha (const char *data, char *hash);
+
+/*****  md5  *****/
+
+struct ikmd5_struct;
+typedef struct iksmd5_struct iksmd5;
+
+iksmd5 *iks_md5_new(void);
+void iks_md5_reset(iksmd5 *md5);
+void iks_md5_hash(iksmd5 *md5, const unsigned char *data, size_t slen, int finish);
+void iks_md5_delete(iksmd5 *md5);
+void iks_md5_print(iksmd5 *md5, char *buf);
+void iks_md5_digest(iksmd5 *md5, unsigned char *digest);
+void iks_md5(const char *data, char *buf);
+
+/*****  base64  *****/
+
+char *iks_base64_decode(const char *buf);
+char *iks_base64_encode(const char *buf, int len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* IKSEMEL_H */
diff --git a/backend/impress/imposter.h b/backend/impress/imposter.h
new file mode 100644
index 00000000..50c87f2c
--- /dev/null
+++ b/backend/impress/imposter.h
@@ -0,0 +1,84 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#ifndef IMPOSTER_H
+#define IMPOSTER_H
+
+#include <sys/types.h>
+
+enum {
+	IMP_OK = 0,
+	IMP_NOMEM,
+	IMP_NOTZIP,
+	IMP_BADZIP,
+	IMP_BADDOC,
+	IMP_NOTIMP
+};
+
+struct ImpDoc_struct;
+typedef struct ImpDoc_struct ImpDoc;
+
+struct ImpPage_struct;
+typedef struct ImpPage_struct ImpPage;
+
+typedef struct ImpPointStruct {
+	int x;
+	int y;
+} ImpPoint;
+
+typedef struct ImpColorStruct {
+	int red;
+	int green;
+	int blue;
+} ImpColor;
+
+#define IMP_NORMAL 0
+#define IMP_BOLD 1
+#define IMP_ITALIC 2
+#define IMP_UNDERLINE 4
+
+typedef struct ImpDrawer_struct {
+	void (*get_size)(void *drw_data, int *w, int *h);
+	void (*set_fg_color)(void *drw_data, ImpColor *color);
+	void (*draw_line)(void *drw_data, int x1, int y1, int x2, int y2);
+	void (*draw_rect)(void *drw_data, int fill, int x, int y, int w, int h);
+	void (*draw_polygon)(void *drw_data, int fill, ImpPoint *pts, int nr_pts);
+	void (*draw_arc)(void *drw_data, int fill, int x, int y, int w, int h, int sa, int ea);
+	void (*draw_bezier)(void *drw_data, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
+	void *(*open_image)(void *drw_data, const unsigned char *pix, size_t size);
+	void (*get_image_size)(void *drw_data, void *img_data, int *w, int *h);
+	void *(*scale_image)(void *drw_data, void *img_data, int w, int h);
+	void (*draw_image)(void *drw_data, void *img_data, int x, int y, int w, int h);
+	void (*close_image)(void *drw_data, void *img_data);
+	void (*get_text_size)(void *drw_data, const char *text, size_t len, int size, int styles, int *w, int *h);
+	void (*draw_text)(void *drw_data, int x, int y, const char *text, size_t len, int size, int styles);
+} ImpDrawer;
+
+struct ImpRenderCtx_struct;
+typedef struct ImpRenderCtx_struct ImpRenderCtx;
+
+#define IMP_LAST_PAGE -1
+
+ImpDoc *imp_open(const char *filename, int *err);
+int imp_nr_pages(ImpDoc *doc);
+ImpPage *imp_get_page(ImpDoc *doc, int page_no);
+void imp_close(ImpDoc *doc);
+
+void *imp_get_xml(ImpDoc *doc, const char *filename);
+
+ImpPage *imp_next_page(ImpPage *page);
+ImpPage *imp_prev_page(ImpPage *page);
+int imp_get_page_no(ImpPage *page);
+const char *imp_get_page_name(ImpPage *page);
+
+ImpRenderCtx *imp_create_context(const ImpDrawer *drw);
+void imp_context_set_page(ImpRenderCtx *ctx, ImpPage *page);
+void imp_context_set_step(ImpRenderCtx *ctx, int step);
+void imp_render(ImpRenderCtx *ctx, void *drw_data);
+void imp_delete_context(ImpRenderCtx *ctx);
+
+
+#endif	/* IMPOSTER_H */
diff --git a/backend/impress/impress-document.c b/backend/impress/impress-document.c
new file mode 100644
index 00000000..5254a881
--- /dev/null
+++ b/backend/impress/impress-document.c
@@ -0,0 +1,548 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/*
+ * Copyright (C) 2005, Jonathan Blandford <[email protected]>
+ * Copyright (C) 2005, Bastien Nocera <[email protected]>
+ *
+ * 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib/gi18n-lib.h>
+#include <gtk/gtk.h>
+
+#include "imposter.h"
+#include "impress-document.h"
+
+#include "ev-document-misc.h"
+#include "ev-document-thumbnails.h"
+
+struct _ImpressDocumentClass
+{
+  EvDocumentClass parent_class;
+};
+
+struct _ImpressDocument
+{
+  EvDocument parent_instance;
+
+  ImpDoc *imp;
+  ImpRenderCtx *ctx;
+
+  GMutex *mutex;
+  GdkPixmap *pixmap;
+  GdkGC *gc;
+  PangoContext *pango_ctx;
+
+  /* Only used while rendering inside the mainloop */
+  int pagenum;
+  GdkPixbuf *pixbuf;
+  GCond *cond;
+};
+
+#define PAGE_WIDTH 1024
+#define PAGE_HEIGHT 768
+
+typedef struct _ImpressDocumentClass ImpressDocumentClass;
+
+static void impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface);
+
+EV_BACKEND_REGISTER_WITH_CODE (ImpressDocument, impress_document,
+		         {
+			   EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
+							   impress_document_document_thumbnails_iface_init);
+			 });
+
+/* Renderer */
+static void
+imp_render_draw_bezier_real (GdkDrawable *d, GdkGC *gc, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3)
+{
+  int x, y, nx, ny;
+  int ax, bx, cx, ay, by, cy;
+  double t, t2, t3;
+
+  x = x0;
+  y = y0;
+
+  cx = 3 * (x1 - x0);
+  bx = 3 * (x2 - x1) - cx;
+  ax = x3 - x0 - cx - bx;
+  cy = 3 * (y1 - y0);
+  by = 3 * (y2 - y1) - cy;
+  ay = y3 - y0 - cy - by;
+
+  for (t = 0; t < 1; t += 0.01) {
+    t2 = t * t;
+    t3 = t2 * t;
+    nx = ax * t3 + bx * t2 + cx * t + x0;
+    ny = ay * t3 + by * t2 + cy * t + y0;
+    gdk_draw_line (d, gc, x, y, nx, ny);
+    x = nx;
+    y = ny;
+  }
+}
+
+static void
+imp_render_get_size(void *drw_data, int *w, int *h)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+	#if GTK_CHECK_VERSION(3, 0, 0)
+		*w = gdk_window_get_width(impress_document->pixmap);
+		*h = gdk_window_get_height(impress_document->pixmap);
+	#else
+		gdk_drawable_get_size(impress_document->pixmap, w, h);
+	#endif
+}
+
+static void
+imp_render_set_fg_color(void *drw_data, ImpColor *color)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+  GdkColor c;
+
+  c.red = color->red;
+  c.green = color->green;
+  c.blue = color->blue;
+  gdk_gc_set_rgb_fg_color(impress_document->gc, &c);
+}
+
+static void
+imp_render_draw_line(void *drw_data, int x1, int y1, int x2, int y2)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+  gdk_draw_line(impress_document->pixmap, impress_document->gc, x1, y1, x2, y2);
+}
+
+static void
+imp_render_draw_rect(void *drw_data, int fill, int x, int y, int w, int h)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+  gdk_draw_rectangle(impress_document->pixmap, impress_document->gc, fill, x, y, w, h);
+}
+
+static void
+imp_render_draw_polygon(void *drw_data, int fill, ImpPoint *pts, int nr_pts)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+  gdk_draw_polygon(impress_document->pixmap, impress_document->gc, fill, (GdkPoint *)pts, nr_pts);
+}
+
+static void
+imp_render_draw_arc(void *drw_data, int fill, int x, int y, int w, int h, int sa, int ea)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+  gdk_draw_arc(impress_document->pixmap, impress_document->gc, fill, x, y, w, h, sa * 64, ea * 64);
+}
+
+static void
+imp_render_draw_bezier(void *drw_data, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+
+  imp_render_draw_bezier_real (impress_document->pixmap, impress_document->gc, x0, y0, x1, y1, x2, y2, x3, y3);
+}
+
+static void *
+imp_render_open_image(void *drw_data, const unsigned char *pix, size_t size)
+{
+  GdkPixbufLoader *gpl;
+  GdkPixbuf *pb;
+
+  gpl = gdk_pixbuf_loader_new();
+  gdk_pixbuf_loader_write(gpl, pix, size, NULL);
+  gdk_pixbuf_loader_close(gpl, NULL);
+  pb = gdk_pixbuf_loader_get_pixbuf(gpl);
+  return pb;
+}
+
+static void
+imp_render_get_image_size(void *drw_data, void *img_data, int *w, int *h)
+{
+  GdkPixbuf *pb = (GdkPixbuf *) img_data;
+
+  *w = gdk_pixbuf_get_width(pb);
+  *h = gdk_pixbuf_get_height(pb);
+}
+
+static void *
+imp_render_scale_image(void *drw_data, void *img_data, int w, int h)
+{
+  GdkPixbuf *pb = (GdkPixbuf *) img_data;
+
+  return gdk_pixbuf_scale_simple(pb, w, h, GDK_INTERP_BILINEAR);
+}
+
+static void
+imp_render_draw_image(void *drw_data, void *img_data, int x, int y, int w, int h)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+  GdkPixbuf *pb = (GdkPixbuf *) img_data;
+
+  gdk_draw_pixbuf(impress_document->pixmap, impress_document->gc, pb, 0, 0, x, y, w, h, GDK_RGB_DITHER_NONE, 0, 0);
+}
+
+static void
+imp_render_close_image(void *drw_data, void *img_data)
+{
+  GdkPixbuf *pb = (GdkPixbuf *) img_data;
+
+  g_object_unref(G_OBJECT(pb));
+}
+
+static char *
+imp_render_markup(const char *text, size_t len, int styles, int size)
+{
+  double scr_mm, scr_px, dpi;
+  char *esc;
+  char *ret;
+  int sz;
+
+  scr_mm = gdk_screen_get_height_mm(gdk_screen_get_default());
+  scr_px = gdk_screen_get_height(gdk_screen_get_default());
+  dpi = (scr_px / scr_mm) * 25.4;
+  sz = (int) ((double) size * 72.0 * PANGO_SCALE / dpi);
+  esc = g_markup_escape_text(text, len);
+  ret = g_strdup_printf("<span size ='%d'>%s</span>", sz, esc);
+  g_free(esc);
+  return ret;
+}
+
+static void
+imp_render_get_text_size(void *drw_data, const char *text, size_t len, int size, int styles, int *w, int *h)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+  PangoLayout *lay;
+  int pw, ph;
+  char *m;
+
+  g_return_if_fail (impress_document->pango_ctx != NULL);
+
+  lay = pango_layout_new(impress_document->pango_ctx);
+  m = imp_render_markup(text, len, styles, size);
+  pango_layout_set_markup(lay, m, strlen(m));
+  pango_layout_get_size(lay, &pw, &ph);
+  g_object_unref(lay);
+  g_free(m);
+  *w = pw / PANGO_SCALE;
+  *h = ph / PANGO_SCALE;
+}
+
+static void
+imp_render_draw_text(void *drw_data, int x, int y, const char *text, size_t len, int size, int styles)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
+  PangoLayout *lay;
+  char *m;
+
+  g_return_if_fail (impress_document->pango_ctx != NULL);
+
+  lay = pango_layout_new(impress_document->pango_ctx);
+  m = imp_render_markup(text, len, styles, size);
+  pango_layout_set_markup(lay, m, strlen(m));
+  gdk_draw_layout(impress_document->pixmap, impress_document->gc, x, y, lay);
+  g_object_unref(lay);
+  g_free(m);
+}
+
+static const ImpDrawer imp_render_functions = {
+  imp_render_get_size,
+  imp_render_set_fg_color,
+  imp_render_draw_line,
+  imp_render_draw_rect,
+  imp_render_draw_polygon,
+  imp_render_draw_arc,
+  imp_render_draw_bezier,
+  imp_render_open_image,
+  imp_render_get_image_size,
+  imp_render_scale_image,
+  imp_render_draw_image,
+  imp_render_close_image,
+  imp_render_get_text_size,
+  imp_render_draw_text
+};
+
+/* Document interface */
+static gboolean
+impress_document_load (EvDocument  *document,
+		    const char  *uri,
+		    GError     **error)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
+  gchar *filename;
+  ImpDoc *imp;
+  int err;
+
+  /* FIXME: Could we actually load uris ? */
+  filename = g_filename_from_uri (uri, NULL, error);
+  if (!filename)
+    return FALSE;
+
+  imp = imp_open (filename, &err);
+  g_free (filename);
+
+  if (!imp)
+    {
+      g_set_error_literal (error,
+                           EV_DOCUMENT_ERROR,
+                           EV_DOCUMENT_ERROR_INVALID,
+                           _("Invalid document"));
+      return FALSE;
+    }
+  impress_document->imp = imp;
+
+  return TRUE;
+}
+
+static gboolean
+impress_document_save (EvDocument  *document,
+                       const char  *uri,
+                       GError     **error)
+{
+        g_set_error_literal (error,
+                             EV_DOCUMENT_ERROR,
+                             EV_DOCUMENT_ERROR_INVALID,
+                             "Not supported");
+	return FALSE;
+}
+
+static int
+impress_document_get_n_pages (EvDocument  *document)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
+
+  g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), 0);
+  g_return_val_if_fail (impress_document->imp != NULL, 0);
+
+  return imp_nr_pages (impress_document->imp);
+}
+
+static void
+impress_document_get_page_size (EvDocument   *document,
+				EvPage       *page,
+				double       *width,
+				double       *height)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
+
+  g_return_if_fail (IMPRESS_IS_DOCUMENT (document));
+  g_return_if_fail (impress_document->imp != NULL);
+
+  //FIXME
+  *width = PAGE_WIDTH;
+  *height = PAGE_HEIGHT;
+}
+
+static gboolean
+imp_render_get_from_drawable (ImpressDocument *impress_document)
+{
+  ImpPage *page;
+
+  page = imp_get_page (impress_document->imp, impress_document->pagenum);
+
+  g_return_val_if_fail (page != NULL, FALSE);
+
+  ev_document_doc_mutex_lock ();
+  imp_context_set_page (impress_document->ctx, page);
+  imp_render (impress_document->ctx, impress_document);
+  ev_document_doc_mutex_unlock ();
+
+  impress_document->pixbuf = gdk_pixbuf_get_from_drawable (NULL,
+					 GDK_DRAWABLE (impress_document->pixmap),
+					 NULL,
+					 0, 0,
+					 0, 0,
+					 PAGE_WIDTH, PAGE_HEIGHT);
+
+  g_cond_broadcast (impress_document->cond);
+  return FALSE;
+}
+
+static GdkPixbuf *
+impress_document_render_pixbuf (EvDocument      *document,
+				EvRenderContext *rc)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
+  GdkPixbuf       *pixbuf;
+
+  g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), NULL);
+  g_return_val_if_fail (impress_document->imp != NULL, NULL);
+
+  impress_document->pagenum = rc->page->index;
+
+  g_mutex_lock (impress_document->mutex);
+  impress_document->cond = g_cond_new ();
+
+  ev_document_fc_mutex_unlock ();
+  ev_document_doc_mutex_unlock ();
+  g_idle_add ((GSourceFunc) imp_render_get_from_drawable, impress_document);
+  g_cond_wait (impress_document->cond, impress_document->mutex);
+  g_cond_free (impress_document->cond);
+  ev_document_doc_mutex_lock ();
+  ev_document_fc_mutex_lock ();
+
+  g_mutex_unlock (impress_document->mutex);
+
+  pixbuf = impress_document->pixbuf;
+  impress_document->pixbuf = NULL;
+
+  return pixbuf;
+}
+
+static cairo_surface_t *
+impress_document_render (EvDocument      *document,
+			 EvRenderContext *rc)
+{
+  GdkPixbuf *pixbuf;
+  cairo_surface_t *surface, *scaled_surface;
+
+  pixbuf = impress_document_render_pixbuf (document, rc);
+
+  /* FIXME: impress backend should be ported to cairo */
+  surface = ev_document_misc_surface_from_pixbuf (pixbuf);
+  g_object_unref (pixbuf);
+
+  scaled_surface = ev_document_misc_surface_rotate_and_scale (surface,
+							      (PAGE_WIDTH * rc->scale) + 0.5,
+							      (PAGE_HEIGHT * rc->scale) + 0.5,
+							      rc->rotation);
+  cairo_surface_destroy (surface);
+
+  return scaled_surface;
+}
+
+static void
+impress_document_finalize (GObject *object)
+{
+  ImpressDocument *impress_document = IMPRESS_DOCUMENT (object);
+
+  if (impress_document->mutex)
+    g_mutex_free (impress_document->mutex);
+
+  if (impress_document->imp)
+    imp_close (impress_document->imp);
+
+  if (impress_document->ctx)
+    imp_delete_context (impress_document->ctx);
+
+  if (impress_document->pango_ctx)
+    g_object_unref (impress_document->pango_ctx);
+
+  if (impress_document->pixmap)
+    g_object_unref (G_OBJECT (impress_document->pixmap));
+
+  if (impress_document->gc)
+    g_object_unref (impress_document->gc);
+
+  G_OBJECT_CLASS (impress_document_parent_class)->finalize (object);
+}
+
+static void
+impress_document_class_init (ImpressDocumentClass *klass)
+{
+  GObjectClass    *gobject_class = G_OBJECT_CLASS (klass);
+  EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass);
+
+  gobject_class->finalize = impress_document_finalize;
+
+  ev_document_class->load = impress_document_load;
+  ev_document_class->save = impress_document_save;
+  ev_document_class->get_n_pages = impress_document_get_n_pages;
+  ev_document_class->get_page_size = impress_document_get_page_size;
+  ev_document_class->render = impress_document_render;
+}
+
+static GdkPixbuf *
+impress_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
+					   EvRenderContext      *rc,
+					   gboolean              border)
+{
+  GdkPixbuf *pixbuf;
+  GdkPixbuf *scaled_pixbuf;
+
+  pixbuf = impress_document_render_pixbuf (EV_DOCUMENT (document), rc);
+  scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
+					   (PAGE_WIDTH * rc->scale),
+					   (PAGE_HEIGHT * rc->scale),
+					   GDK_INTERP_BILINEAR);
+  g_object_unref (pixbuf);
+
+  if (border)
+    {
+      GdkPixbuf *tmp_pixbuf = scaled_pixbuf;
+
+      scaled_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
+      g_object_unref (tmp_pixbuf);
+    }
+
+  return scaled_pixbuf;
+}
+
+static void
+impress_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
+					    EvRenderContext      *rc,
+					    gint                 *width,
+					    gint                 *height)
+{
+  gdouble page_width, page_height;
+
+  impress_document_get_page_size (EV_DOCUMENT (document),
+				  rc->page,
+				  &page_width, &page_height);
+
+  if (rc->rotation == 90 || rc->rotation == 270)
+    {
+      *width = (gint) (page_height * rc->scale);
+      *height = (gint) (page_width * rc->scale);
+    }
+  else
+    {
+      *width = (gint) (page_width * rc->scale);
+      *height = (gint) (page_height * rc->scale);
+    }
+}
+
+static void
+impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
+{
+  iface->get_thumbnail = impress_document_thumbnails_get_thumbnail;
+  iface->get_dimensions = impress_document_thumbnails_get_dimensions;
+}
+
+static void
+impress_document_init (ImpressDocument *impress_document)
+{
+  GdkWindow *window;
+
+  impress_document->mutex = g_mutex_new ();
+  impress_document->ctx = imp_create_context(&imp_render_functions);
+
+  window = gdk_screen_get_root_window (gdk_screen_get_default ());
+
+  impress_document->pixmap = gdk_pixmap_new (window,
+					     PAGE_WIDTH, PAGE_HEIGHT, -1);
+  impress_document->gc = gdk_gc_new (impress_document->pixmap);
+  impress_document->pango_ctx = gdk_pango_context_get_for_screen (gdk_screen_get_default ());
+}
+
+/*
+ * vim: sw=2 ts=8 cindent noai bs=2
+ */
diff --git a/backend/impress/impress-document.h b/backend/impress/impress-document.h
new file mode 100644
index 00000000..17a3c19a
--- /dev/null
+++ b/backend/impress/impress-document.h
@@ -0,0 +1,39 @@
+
+/* pdfdocument.h: Implementation of EvDocument for impresss
+ * Copyright (C) 2005, Jonathan Blandford <[email protected]>
+ *
+ * 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __IMPRESS_DOCUMENT_H__
+#define __IMPRESS_DOCUMENT_H__
+
+#include "ev-document.h"
+
+G_BEGIN_DECLS
+
+#define IMPRESS_TYPE_DOCUMENT             (impress_document_get_type ())
+#define IMPRESS_DOCUMENT(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), IMPRESS_TYPE_DOCUMENT, ImpressDocument))
+#define IMPRESS_IS_DOCUMENT(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), IMPRESS_TYPE_DOCUMENT))
+
+typedef struct _ImpressDocument ImpressDocument;
+
+GType                 impress_document_get_type (void) G_GNUC_CONST;
+
+G_MODULE_EXPORT GType register_evince_backend   (GTypeModule *module);
+     
+G_END_DECLS
+
+#endif /* __IMPRESS_DOCUMENT_H__ */
diff --git a/backend/impress/impressdocument.evince-backend.in b/backend/impress/impressdocument.evince-backend.in
new file mode 100644
index 00000000..61de77ab
--- /dev/null
+++ b/backend/impress/impressdocument.evince-backend.in
@@ -0,0 +1,4 @@
+[Evince Backend]
+Module=impressdocument
+_TypeDescription=Impress Slides
+MimeType=application/vnd.sun.xml.impress;application/vnd.oasis.opendocument.presentation;
diff --git a/backend/impress/internal.h b/backend/impress/internal.h
new file mode 100644
index 00000000..eb99c3ec
--- /dev/null
+++ b/backend/impress/internal.h
@@ -0,0 +1,85 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include "zip.h"
+
+#ifndef INTERNAL_H
+#define INTERNAL_H
+
+struct ImpDoc_struct {
+	ikstack *stack;
+	zip *zfile;
+	iks *content;
+	iks *styles;
+	iks *meta;
+	ImpPage *pages;
+	ImpPage *last_page;
+	int nr_pages;
+	void (*get_geometry)(ImpRenderCtx *ctx);
+	void (*render_page)(ImpRenderCtx *ctx, void *drw_data);
+};
+
+struct ImpPage_struct {
+	struct ImpPage_struct *next;
+	struct ImpPage_struct *prev;
+	ImpDoc *doc;
+	iks *page;
+	const char *name;
+	int nr;
+};
+
+struct ImpRenderCtx_struct {
+	const ImpDrawer *drw;
+	ImpPage *page;
+	iks *content;
+	iks *styles;
+	iks *last_element;
+	int step;
+	int pix_w, pix_h;
+	double cm_w, cm_h;
+	double fact_x, fact_y;
+};
+
+char *r_get_style (ImpRenderCtx *ctx, iks *node, char *attr);
+int r_get_color(ImpRenderCtx *ctx, iks *node, char *name, ImpColor *ic);
+void r_parse_color(const char *color, ImpColor *ic);
+int r_get_x (ImpRenderCtx *ctx, iks *node, char *name);
+int r_get_y (ImpRenderCtx *ctx, iks *node, char *name);
+int r_get_angle (iks *node, char *name, int def);
+
+enum {
+	IMP_LE_NONE = 0,
+	IMP_LE_ARROW,
+	IMP_LE_SQUARE,
+	IMP_LE_DIMENSION,
+	IMP_LE_DOUBLE_ARROW,
+	IMP_LE_SMALL_ARROW,
+	IMP_LE_ROUND_ARROW,
+	IMP_LE_SYM_ARROW,
+	IMP_LE_LINE_ARROW,
+	IMP_LE_ROUND_LARGE_ARROW,
+	IMP_LE_CIRCLE,
+	IMP_LE_SQUARE_45,
+	IMP_LE_CONCAVE_ARROW
+};
+
+void _imp_draw_rect(ImpRenderCtx *ctx, void *drw_data, int fill, int x, int y, int w, int h, int round);
+void _imp_draw_line_end(ImpRenderCtx *ctx, void *drw_data, int type, int size, int x, int y, int x2, int y2);
+void _imp_draw_image(ImpRenderCtx *ctx, void *drw_data, const char *name, int x, int y, int w, int h);
+void _imp_tile_image(ImpRenderCtx *ctx, void *drw_data, const char *name, int x, int y, int w, int h);
+
+int _imp_fill_back(ImpRenderCtx *ctx, void *drw_data, iks *node);
+void r_text(ImpRenderCtx *ctx, void *drw_data, iks *node);
+void r_polygon(ImpRenderCtx *ctx, void *drw_data, iks *node);
+void r_circle(ImpRenderCtx *ctx, void *drw_data, iks *node);
+void r_polyline(ImpRenderCtx *ctx, void *drw_data, iks *node);
+void r_draw_gradient (ImpRenderCtx *ctx, void *drw_data, iks *node);
+
+int _imp_oo13_load(ImpDoc *doc);
+int _imp_oasis_load(ImpDoc *doc);
+
+
+#endif	/* INTERNAL_H */
diff --git a/backend/impress/r_back.c b/backend/impress/r_back.c
new file mode 100644
index 00000000..3f050d9e
--- /dev/null
+++ b/backend/impress/r_back.c
@@ -0,0 +1,46 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+int
+_imp_fill_back(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	ImpColor col;
+	char *type;
+	char *stil, *gfx;
+	iks *x;
+
+	type = r_get_style(ctx, node, "draw:fill");
+	if (type == 0) return 0;
+
+	if (strcmp(type, "solid") == 0) {
+		if (r_get_color(ctx, node, "draw:fill-color", &col)) {
+			ctx->drw->set_fg_color(drw_data, &col);
+		}
+		ctx->drw->draw_rect(drw_data, 1, 0, 0, ctx->pix_w, ctx->pix_h);
+	} else if (strcmp (type, "bitmap") == 0) {
+		stil = r_get_style(ctx, node, "draw:fill-image-name");
+		x = iks_find_with_attrib(iks_find(ctx->styles, "office:styles"),
+			"draw:fill-image", "draw:name", stil
+		);
+		gfx = iks_find_attrib(x, "xlink:href");
+		if (gfx) {
+			if (iks_strcmp(r_get_style(ctx, node, "style:repeat"), "stretch") == 0) {
+				_imp_draw_image(ctx, drw_data, gfx, 0, 0, ctx->pix_w, ctx->pix_h);
+			} else {
+				_imp_tile_image(ctx, drw_data, gfx, 0, 0, ctx->pix_w, ctx->pix_h);
+			}
+		}
+	} else if (strcmp(type, "gradient") == 0) {
+		r_draw_gradient(ctx, drw_data, node);
+	} else {
+		return 0;
+	}
+	return 1;
+}
diff --git a/backend/impress/r_draw.c b/backend/impress/r_draw.c
new file mode 100644
index 00000000..aad1655e
--- /dev/null
+++ b/backend/impress/r_draw.c
@@ -0,0 +1,120 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+#include <math.h>
+
+void
+_imp_draw_rect(ImpRenderCtx *ctx, void *drw_data, int fill, int x, int y, int w, int h, int round)
+{
+	int a;
+
+	if (0 == round) {
+		ctx->drw->draw_rect(drw_data, fill, x, y, w, h);
+		return;
+	}
+
+	ctx->drw->draw_arc(drw_data, fill,
+		x, y, round, round, 90, 90);
+	ctx->drw->draw_arc(drw_data, fill,
+		x + w - round, y, round, round, 0, 90);
+	ctx->drw->draw_arc(drw_data, fill,
+		x + w - round, y + h - round, round, round, 270, 90);
+	ctx->drw->draw_arc(drw_data, fill,
+		x, y + h - round, round, round, 180, 90);
+
+	a = round / 2;
+	if (fill) {
+		ctx->drw->draw_rect(drw_data, 1, x + a, y, w - a - a, h);
+		ctx->drw->draw_rect(drw_data, 1, x, y + a, w, h - a - a);
+		return;
+	}
+	ctx->drw->draw_line(drw_data, x + a, y, x + w - a, y);
+	ctx->drw->draw_line(drw_data, x + a, y + h, x + w - a, y + h);
+	ctx->drw->draw_line(drw_data, x, y + a, x, y + h - a);
+	ctx->drw->draw_line(drw_data, x + w, y + a, x + w, y + h - a);
+}
+
+void
+_imp_draw_line_end(ImpRenderCtx *ctx, void *drw_data, int type, int size, int x, int y, int x2, int y2)
+{
+	ImpPoint pts[4];
+	double ia, a;
+
+	// FIXME: different types and sizes
+
+	pts[0].x = x2;
+	pts[0].y = y2;
+
+	ia = 20 * 3.14 * 2 / 360;
+
+	if (x2-x == 0) {
+		if (y < y2) a = 3.14 + (3.14 / 2); else a = (3.14 / 2);
+	} else if (y2-y == 0) {
+		if (x < x2) a = 3.14; else a = 0;
+	} else
+		a = atan ((y2-y) / (x2-x)) - 3.14;
+
+	pts[1].x = x2 + 0.3 * ctx->fact_x * cos (a - ia);
+	pts[1].y = y2 + 0.3 * ctx->fact_y * sin (a - ia);
+
+	pts[2].x = x2 + 0.3 * ctx->fact_x * cos (a + ia);
+	pts[2].y = y2 + 0.3 * ctx->fact_y * sin (a + ia);
+
+	ctx->drw->draw_polygon(drw_data, 1, pts, 3);
+}
+
+void
+_imp_draw_image(ImpRenderCtx *ctx, void *drw_data, const char *name, int x, int y, int w, int h)
+{
+	void *img1, *img2;
+	char *pix;
+	size_t len;
+
+	len = zip_get_size(ctx->page->doc->zfile, name);
+	pix = malloc(len);
+	if (!pix) return;
+	zip_load(ctx->page->doc->zfile, name, pix);
+
+	img1 = ctx->drw->open_image(drw_data, pix, len);
+	free(pix);
+	if (!img1) return;
+	img2 = ctx->drw->scale_image(drw_data, img1, w, h);
+	if (img2) {
+		ctx->drw->draw_image(drw_data, img2, x, y, w, h);
+		ctx->drw->close_image(drw_data, img2);
+	}
+	ctx->drw->close_image(drw_data, img1);
+}
+
+void
+_imp_tile_image(ImpRenderCtx *ctx, void *drw_data, const char *name, int x, int y, int w, int h)
+{
+	void *img1;
+	char *pix;
+	size_t len;
+	int gx, gy, gw, gh;
+
+	len = zip_get_size(ctx->page->doc->zfile, name);
+	pix = malloc(len);
+	if (!pix) return;
+	zip_load(ctx->page->doc->zfile, name, pix);
+
+	img1 = ctx->drw->open_image(drw_data, pix, len);
+	free(pix);
+	if (!img1) return;
+
+	ctx->drw->get_image_size(drw_data, img1, &gw, &gh);
+	for (gx = x; gx < w; gx += gw) {
+		for (gy = y; gy < h; gy += gh) {
+			ctx->drw->draw_image(drw_data, img1, gx, gy, gw, gh);
+		}
+	}
+
+	ctx->drw->close_image(drw_data, img1);
+}
diff --git a/backend/impress/r_geometry.c b/backend/impress/r_geometry.c
new file mode 100644
index 00000000..4819821a
--- /dev/null
+++ b/backend/impress/r_geometry.c
@@ -0,0 +1,208 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+#include <math.h>
+
+void
+r_parse_color(const char *color, ImpColor *ic)
+{
+	unsigned int cval;
+
+	if (1 != sscanf(color, "#%X", &cval)) return;
+
+	ic->red = (cval & 0xFF0000) >> 8;
+	ic->green = cval & 0x00FF00;
+	ic->blue = (cval & 0xFF) << 8;
+}
+
+int
+r_get_color(ImpRenderCtx *ctx, iks *node, char *name, ImpColor *ic)
+{
+	char *color;
+
+	color = r_get_style(ctx, node, name);
+	if (!color) return 0;
+	r_parse_color(color, ic);
+
+	return 1;
+}
+
+static void
+fg_color(ImpRenderCtx *ctx, void *drw_data, iks *node, char *name)
+{
+	ImpColor ic;
+
+	if (r_get_color(ctx, node, name, &ic)) {
+		ctx->drw->set_fg_color(drw_data, &ic);
+	}
+}
+
+int
+r_get_x (ImpRenderCtx *ctx, iks *node, char *name)
+{
+	char *val;
+
+	val = iks_find_attrib (node, name);
+	if (!val) return 0;
+	return atof (val) * ctx->fact_x;
+}
+
+int
+r_get_y (ImpRenderCtx *ctx, iks *node, char *name)
+{
+	char *val;
+
+	val = iks_find_attrib (node, name);
+	if (!val) return 0;
+	return atof (val) * ctx->fact_y;
+}
+
+int
+r_get_angle (iks *node, char *name, int def)
+{
+	char *tmp;
+
+	tmp = iks_find_attrib (node, name);
+	if (!tmp) return def;
+	return atof (tmp);
+}
+
+static int x, y, w, h;
+static int px, py, pw, ph;
+
+static void
+r_get_viewbox (iks *node)
+{
+	char *tmp;
+
+	tmp = iks_find_attrib (node, "svg:viewBox");
+	if (!tmp) return;
+	sscanf (tmp, "%d %d %d %d", &px, &py, &pw, &ph);
+}
+
+void
+r_polygon(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	char *data;
+	ImpPoint *points;
+	int i, cnt, j;
+	int num;
+	int fill = 1;
+
+	data = r_get_style (ctx, node, "draw:fill");
+	if (!data || strcmp (data, "solid") != 0) fill = 0;
+
+	x = r_get_x (ctx, node, "svg:x");
+	y = r_get_y (ctx, node, "svg:y");
+	w = r_get_x (ctx, node, "svg:width");
+	h = r_get_y (ctx, node, "svg:height");
+	r_get_viewbox (node);
+
+	data = iks_find_attrib (node, "draw:points");
+	points = malloc (sizeof (ImpPoint) * strlen (data) / 4);
+
+	cnt = 0;
+	j = 0;
+	num = -1;
+	for (i = 0; data[i]; i++) {
+		if (data[i] >= '0' && data[i] <= '9') {
+			if (num == -1) num = i;
+		} else {
+			if (num != -1) {
+				if (j == 0) {
+					points[cnt].x = atoi (data + num);
+					j = 1;
+				} else {
+					points[cnt++].y = atoi (data + num);
+					j = 0;
+				}
+				num = -1;
+			}
+		}
+	}
+	if (num != -1) {
+		if (j == 0) {
+			points[cnt].x = atoi (data + num);
+		} else {
+			points[cnt++].y = atoi (data + num);
+		}
+	}
+	for (i = 0; i < cnt; i++) {
+		points[i].x = x + points[i].x * w / pw;
+		points[i].y = y + points[i].y * h / ph;
+	}
+
+	if (fill) {
+		fg_color(ctx, drw_data, node, "draw:fill-color");
+		ctx->drw->draw_polygon(drw_data, 1, points, cnt);
+	}
+	fg_color(ctx, drw_data, node, "svg:stroke-color");
+	ctx->drw->draw_polygon(drw_data, 0, points, cnt);
+
+	free (points);
+}
+
+void
+r_polyline(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	char *data;
+	ImpPoint *points;
+	int i, cnt, j;
+	int num;
+	int pen_x, pen_y;
+
+	x = r_get_x (ctx, node, "svg:x");
+	y = r_get_y (ctx, node, "svg:y");
+	w = r_get_x (ctx, node, "svg:width");
+	h = r_get_y (ctx, node, "svg:height");
+	r_get_viewbox (node);
+
+	data = iks_find_attrib (node, "draw:points");
+	points = malloc (sizeof (ImpPoint) * strlen (data) / 4);
+
+	cnt = 0;
+	j = 0;
+	num = -1;
+	for (i = 0; data[i]; i++) {
+		if (data[i] >= '0' && data[i] <= '9') {
+			if (num == -1) num = i;
+		} else {
+			if (num != -1) {
+				if (j == 0) {
+					points[cnt].x = atoi (data + num);
+					j = 1;
+				} else {
+					points[cnt++].y = atoi (data + num);
+					j = 0;
+				}
+				num = -1;
+			}
+		}
+	}
+	if (num != -1) {
+		if (j == 0) {
+			points[cnt].x = atoi (data + num);
+		} else {
+			points[cnt++].y = atoi (data + num);
+		}
+	}
+
+	pen_x = x + points[0].x * w /pw;
+	pen_y = y + points[0].y * h / ph;
+	fg_color(ctx, drw_data, node, "svg:stroke-color");
+	for (i = 1; i < cnt; i++) {
+		int tx, ty;
+		tx = x + points[i].x * w / pw;
+		ty = y + points[i].y * h / ph;
+		ctx->drw->draw_line(drw_data, pen_x, pen_y, tx, ty);
+		pen_x = tx;
+		pen_y = ty;
+	}
+	free (points);
+}
diff --git a/backend/impress/r_gradient.c b/backend/impress/r_gradient.c
new file mode 100644
index 00000000..79636fe2
--- /dev/null
+++ b/backend/impress/r_gradient.c
@@ -0,0 +1,387 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+#include <math.h>
+
+#define GRAD_LINEAR 0
+#define GRAD_AXIAL 1
+#define GRAD_SQUARE 2
+#define GRAD_RECTANGULAR 3
+#define GRAD_RADIAL 4
+#define GRAD_ELLIPTICAL 5
+
+typedef struct Gradient_s {
+	int type;
+	ImpColor start;
+	int start_intensity;
+	ImpColor end;
+	int end_intensity;
+	int angle;
+	int border;
+	int steps;
+	int offset_x;
+	int offset_y;
+} Gradient;
+
+typedef struct Rectangle_s {
+	int Left;
+	int Top;
+	int Right;
+	int Bottom;
+} Rectangle;
+
+static void
+poly_rotate (ImpPoint *poly, int n, int cx, int cy, double fAngle)
+{
+	int i;
+	long nX, nY;
+
+	for (i = 0; i < n; i++) {
+		nX = poly->x - cx;
+		nY = poly->y - cy;
+		poly->x = (cos(fAngle) * nX + sin(fAngle) * nY) + cx;
+		poly->y = - (sin(fAngle)* nX - cos(fAngle) * nY) + cy;
+		poly++;
+	}
+}
+
+static void
+r_draw_gradient_simple (ImpRenderCtx *ctx, void *drw_data, Gradient *grad)
+{
+	Rectangle rRect = { 0, 0, ctx->pix_w - 1, ctx->pix_h - 1 };
+	Rectangle aRect, aFullRect;
+	ImpPoint poly[4], tempoly[2];
+	ImpColor gcol;
+	double fW, fH, fDX, fDY, fAngle;
+	double fScanLine, fScanInc;
+	long redSteps, greenSteps, blueSteps;
+	long nBorder;
+	int i, nSteps, nSteps2;
+	int cx, cy;
+
+	cx = rRect.Left + (rRect.Right - rRect.Left) / 2;
+	cy = rRect.Top + (rRect.Bottom - rRect.Top) / 2;
+
+	aRect = rRect;
+	aRect.Top--; aRect.Left--; aRect.Bottom++; aRect.Right++;
+	fW = rRect.Right - rRect.Left;
+	fH = rRect.Bottom - rRect.Top;
+	fAngle = (((double) grad->angle) * 3.14 / 1800.0);
+	fDX = fW * fabs (cos (fAngle)) + fH * fabs (sin (fAngle));
+	fDY = fH * fabs (cos (fAngle)) + fW * fabs (sin (fAngle));
+	fDX = (fDX - fW) * 0.5 - 0.5;
+	fDY = (fDY - fH) * 0.5 - 0.5;
+	aRect.Left -= fDX;
+	aRect.Right += fDX;
+	aRect.Top -= fDY;
+	aRect.Bottom += fDY;
+	aFullRect = aRect;
+
+	nBorder = grad->border * (aRect.Bottom - aRect.Top) / 100;
+	if (grad->type == GRAD_LINEAR) {
+		aRect.Top += nBorder;
+	} else {
+		nBorder >>= 1;
+		aRect.Top += nBorder;
+		aRect.Bottom -= nBorder;
+	}
+
+	if (aRect.Top > (aRect.Bottom - 1))
+		aRect.Top = aRect.Bottom - 1;
+
+	poly[0].x = aFullRect.Left;
+	poly[0].y = aFullRect.Top;
+	poly[1].x = aFullRect.Right;
+	poly[1].y = aFullRect.Top;
+	poly[2].x = aRect.Right;
+	poly[2].y = aRect.Top;
+	poly[3].x = aRect.Left;
+	poly[3].y = aRect.Top;
+	poly_rotate (&poly[0], 4, cx, cy, fAngle);
+
+	redSteps = grad->end.red - grad->start.red;
+	greenSteps = grad->end.green - grad->start.green;
+	blueSteps = grad->end.blue - grad->start.blue;
+	nSteps = grad->steps;
+	if (nSteps == 0) {
+		long mr;
+		mr = aRect.Bottom - aRect.Top;
+		if (mr < 50)
+			nSteps = mr / 2;
+		else
+			nSteps = mr / 4;
+		mr = abs(redSteps);
+		if (abs(greenSteps) > mr) mr = abs(greenSteps);
+		if (abs(blueSteps) > mr) mr = abs(blueSteps);
+		if (mr < nSteps) nSteps = mr;
+	}
+
+	if (grad->type == GRAD_AXIAL) {
+		if (nSteps & 1) nSteps++;
+		nSteps2 = nSteps + 2;
+		gcol = grad->end;
+		redSteps <<= 1;
+		greenSteps <<= 1;
+		blueSteps <<= 1;
+	} else {
+		nSteps2 = nSteps + 1;
+		gcol = grad->start;
+	}
+
+	fScanLine = aRect.Top;
+	fScanInc  = (double)(aRect.Bottom - aRect.Top) / (double)nSteps;
+
+	for (i = 0; i < nSteps2; i++) {
+		// draw polygon
+		ctx->drw->set_fg_color(drw_data, &gcol);
+		ctx->drw->draw_polygon(drw_data, 1, &poly[0], 4);
+		// calc next polygon
+		aRect.Top = (long)(fScanLine += fScanInc);
+		if (i == nSteps) {
+			tempoly[0].x = aFullRect.Left;
+			tempoly[0].y = aFullRect.Bottom;
+			tempoly[1].x = aFullRect.Right;
+			tempoly[1].y = aFullRect.Bottom;
+		} else {
+			tempoly[0].x = aRect.Left;
+			tempoly[0].y = aRect.Top;
+			tempoly[1].x = aRect.Right;
+			tempoly[1].y = aRect.Top;
+		}
+		poly_rotate (&tempoly[0], 2, cx, cy, fAngle);
+		poly[0] = poly[3];
+		poly[1] = poly[2];
+		poly[2] = tempoly[1];
+		poly[3] = tempoly[0];
+		// calc next color
+		if (grad->type == GRAD_LINEAR) {
+			gcol.red = grad->start.red + ((redSteps * i) / nSteps2);
+			gcol.green = grad->start.green + ((greenSteps * i) / nSteps2);
+			gcol.blue = grad->start.blue + ((blueSteps * i) / nSteps2);
+		} else {
+			if (i >= nSteps) {
+				gcol.red = grad->end.red;
+				gcol.green = grad->end.green;
+				gcol.blue = grad->end.blue;
+			} else {
+				if (i <= (nSteps / 2)) {
+					gcol.red = grad->end.red - ((redSteps * i) / nSteps2);
+					gcol.green = grad->end.green - ((greenSteps * i) / nSteps2);
+					gcol.blue = grad->end.blue - ((blueSteps * i) / nSteps2);
+				} else {
+					int i2 = i - nSteps / 2;
+					gcol.red = grad->start.red + ((redSteps * i2) / nSteps2);
+					gcol.green = grad->start.green + ((greenSteps * i2) / nSteps2);
+					gcol.blue = grad->start.blue + ((blueSteps * i2) / nSteps2);
+				}
+			}
+		}
+	}
+}
+
+static void
+r_draw_gradient_complex (ImpRenderCtx *ctx, void *drw_data, Gradient *grad)
+{
+	Rectangle rRect = { 0, 0, ctx->pix_w - 1, ctx->pix_h - 1 };
+	Rectangle aRect = rRect;
+	ImpColor gcol;
+	ImpPoint poly[4];
+	double fAngle = (((double) grad->angle) * 3.14 / 1800.0);
+	long redSteps, greenSteps, blueSteps;
+	long nZW, nZH;
+	long bX, bY;
+	long sW, sH;
+	long cx, cy;
+	int i;
+	long nSteps;
+	double sTop, sLeft, sRight, sBottom, sInc;
+	int minRect;
+
+	redSteps = grad->end.red - grad->start.red;
+	greenSteps = grad->end.green - grad->start.green;
+	blueSteps = grad->end.blue - grad->start.blue;
+
+	if (grad->type == GRAD_SQUARE || grad->type == GRAD_RECTANGULAR) {
+		double fW = aRect.Right - aRect.Left;
+		double fH = aRect.Bottom - aRect.Top;
+		double fDX = fW * fabs (cos (fAngle)) + fH * fabs (sin (fAngle));
+		double fDY = fH * fabs (cos (fAngle)) + fW * fabs (sin (fAngle));
+		fDX = (fDX - fW) * 0.5 - 0.5;
+		fDY = (fDY - fH) * 0.5 - 0.5;
+		aRect.Left -= fDX;
+		aRect.Right += fDX;
+		aRect.Top -= fDY;
+		aRect.Bottom += fDY;
+	}
+
+	sW = aRect.Right - aRect.Left;
+	sH = aRect.Bottom - aRect.Top;
+
+	if (grad->type == GRAD_SQUARE) {
+		if (sW > sH) sH = sW; else sW = sH;
+	} else if (grad->type == GRAD_RADIAL) {
+		sW = 0.5 + sqrt ((double)sW*(double)sW + (double)sH*(double)sH);
+		sH = sW;
+	} else if (grad->type == GRAD_ELLIPTICAL) {
+		sW = 0.5 + (double)sW * 1.4142;
+		sH = 0.5 + (double)sH * 1.4142;
+	}
+
+	nZW = (aRect.Right - aRect.Left) * grad->offset_x / 100;
+	nZH = (aRect.Bottom - aRect.Top) * grad->offset_y / 100;
+	bX = grad->border * sW / 100;
+	bY = grad->border * sH / 100;
+	cx = aRect.Left + nZW;
+	cy = aRect.Top + nZH;
+
+	sW -= bX;
+	sH -= bY;
+
+	aRect.Left = cx - ((aRect.Right - aRect.Left) >> 1);
+	aRect.Top = cy - ((aRect.Bottom - aRect.Top) >> 1);
+
+	nSteps = grad->steps;
+	minRect = aRect.Right - aRect.Left;
+	if (aRect.Bottom - aRect.Top < minRect) minRect = aRect.Bottom - aRect.Top;
+	if (nSteps == 0) {
+		long mr;
+		if (minRect < 50)
+			nSteps = minRect / 2;
+		else
+			nSteps = minRect / 4;
+		mr = abs(redSteps);
+		if (abs(greenSteps) > mr) mr = abs(greenSteps);
+		if (abs(blueSteps) > mr) mr = abs(blueSteps);
+		if (mr < nSteps) nSteps = mr;
+	}
+
+	sLeft = aRect.Left;
+	sTop = aRect.Top;
+	sRight = aRect.Right;
+	sBottom = aRect.Bottom;
+	sInc = (double) minRect / (double) nSteps * 0.5;
+
+	gcol = grad->start;
+	poly[0].x = rRect.Left;
+	poly[0].y = rRect.Top;
+	poly[1].x = rRect.Right;
+	poly[1].y = rRect.Top;
+	poly[2].x = rRect.Right;
+	poly[2].y = rRect.Bottom;
+	poly[3].x = rRect.Left;
+	poly[3].y = rRect.Bottom;
+	ctx->drw->set_fg_color(drw_data, &gcol);
+	ctx->drw->draw_polygon(drw_data, 1, &poly[0], 4);
+
+	for (i = 0; i < nSteps; i++) {
+		aRect.Left = (long) (sLeft += sInc);
+		aRect.Top = (long) (sTop += sInc);
+		aRect.Right = (long) (sRight -= sInc);
+		aRect.Bottom = (long) (sBottom -= sInc);
+		if (aRect.Bottom - aRect.Top < 2 || aRect.Right - aRect.Left < 2)
+			break;
+
+		gcol.red = grad->start.red + (redSteps * (i+1) / nSteps);
+		gcol.green = grad->start.green + (greenSteps * (i+1) / nSteps);
+		gcol.blue = grad->start.blue + (blueSteps * (i+1) / nSteps);
+		ctx->drw->set_fg_color(drw_data, &gcol);
+
+		if (grad->type == GRAD_RADIAL || grad->type == GRAD_ELLIPTICAL) {
+			ctx->drw->draw_arc(drw_data, 1, aRect.Left, aRect.Top,
+				aRect.Right - aRect.Left, aRect.Bottom - aRect.Top,
+				0, 360);
+		} else {
+			poly[0].x = aRect.Left;
+			poly[0].y = aRect.Top;
+			poly[1].x = aRect.Right;
+			poly[1].y = aRect.Top;
+			poly[2].x = aRect.Right;
+			poly[2].y = aRect.Bottom;
+			poly[3].x = aRect.Left;
+			poly[3].y = aRect.Bottom;
+			poly_rotate (&poly[0], 4, cx, cy, fAngle);
+			ctx->drw->draw_polygon(drw_data, 1, &poly[0], 4);
+		}
+	}
+}
+
+void
+r_draw_gradient (ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+//	GdkGC *gc;
+	Gradient grad;
+	char *stil, *tmp;
+	iks *x;
+
+	stil = r_get_style (ctx, node, "draw:fill-gradient-name");
+	x = iks_find_with_attrib (iks_find (ctx->styles, "office:styles"),
+		"draw:gradient", "draw:name", stil);
+	if (x) {
+		memset (&grad, 0, sizeof (Gradient));
+		grad.type = -1;
+		grad.offset_x = 50;
+		grad.offset_y = 50;
+
+		tmp = iks_find_attrib (x, "draw:start-color");
+		if (tmp) r_parse_color (tmp, &grad.start);
+		tmp = iks_find_attrib (x, "draw:start-intensity");
+		if (tmp) {
+			int val = atoi (tmp);
+			grad.start.red = grad.start.red * val / 100;
+			grad.start.green = grad.start.green * val / 100;
+			grad.start.blue = grad.start.blue * val / 100;
+		}
+		tmp = iks_find_attrib (x, "draw:end-color");
+		if (tmp) r_parse_color (tmp, &grad.end);
+		tmp = iks_find_attrib (x, "draw:end-intensity");
+		if (tmp) {
+			int val = atoi (tmp);
+			grad.end.red = grad.end.red * val / 100;
+			grad.end.green = grad.end.green * val / 100;
+			grad.end.blue = grad.end.blue * val / 100;
+		}
+		tmp = iks_find_attrib (x, "draw:angle");
+		if (tmp) grad.angle = atoi(tmp) % 3600;
+		tmp = iks_find_attrib (x, "draw:border");
+		if (tmp) grad.border = atoi(tmp);
+		tmp = r_get_style (ctx, node, "draw:gradient-step-count");
+		if (tmp) grad.steps = atoi (tmp);
+		tmp = iks_find_attrib (x, "draw:cx");
+		if (tmp) grad.offset_x = atoi (tmp);
+		tmp = iks_find_attrib (x, "draw:cy");
+		if (tmp) grad.offset_y = atoi (tmp);
+		tmp = iks_find_attrib (x, "draw:style");
+		if (iks_strcmp (tmp, "linear") == 0)
+			grad.type = GRAD_LINEAR;
+		else if (iks_strcmp (tmp, "axial") == 0)
+			grad.type = GRAD_AXIAL;
+		else if (iks_strcmp (tmp, "radial") == 0)
+			grad.type = GRAD_RADIAL;
+		else if (iks_strcmp (tmp, "rectangular") == 0)
+			grad.type = GRAD_RECTANGULAR;
+		else if (iks_strcmp (tmp, "ellipsoid") == 0)
+			grad.type = GRAD_ELLIPTICAL;
+		else if (iks_strcmp (tmp, "square") == 0)
+			grad.type = GRAD_SQUARE;
+
+		if (grad.type == -1) return;
+
+//		gc = ctx->gc;
+//		ctx->gc = gdk_gc_new (ctx->d);
+//		gdk_gc_copy (ctx->gc, gc);
+
+		if (grad.type == GRAD_LINEAR || grad.type == GRAD_AXIAL)
+			r_draw_gradient_simple (ctx, drw_data, &grad);
+		else
+			r_draw_gradient_complex (ctx, drw_data, &grad);
+
+//		g_object_unref (ctx->gc);
+//		ctx->gc = gc;
+	}
+}
diff --git a/backend/impress/r_style.c b/backend/impress/r_style.c
new file mode 100644
index 00000000..39ee9c62
--- /dev/null
+++ b/backend/impress/r_style.c
@@ -0,0 +1,111 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+static char *
+get_style(ImpRenderCtx *ctx, iks *node, char *style, char *attr)
+{
+	char *ret;
+	iks *x;
+
+	if (!style) return NULL;
+
+	if (iks_root (node) == ctx->content) {
+		x = iks_find_with_attrib (iks_find (ctx->content, "office:automatic-styles"),
+			"style:style", "style:name", style);
+	} else {
+		x = iks_find_with_attrib (iks_find (ctx->styles, "office:automatic-styles"),
+			"style:style", "style:name", style);
+	}
+	if (!x) return NULL;
+
+	while (x) {
+		ret = iks_find_attrib (iks_find (x, "style:properties"), attr);
+		if (ret) return ret;
+		ret = iks_find_attrib (iks_find (x, "style:text-properties"), attr);
+		if (ret) return ret;
+		ret = iks_find_attrib (iks_find (x, "style:paragraph-properties"), attr);
+		if (ret) return ret;
+		ret = iks_find_attrib (iks_find (x, "style:graphic-properties"), attr);
+		if (ret) return ret;
+		ret = iks_find_attrib (iks_find (x, "style:drawing-page-properties"), attr);
+		if (ret) return ret;
+
+		style = iks_find_attrib (x, "style:parent-style-name");
+		if (!style) return NULL;
+
+		x = iks_find_with_attrib (iks_find (ctx->styles, "office:styles"),
+			"style:style", "style:name", style);
+
+	}
+	return NULL;
+}
+
+char *
+r_get_style (ImpRenderCtx *ctx, iks *node, char *attr)
+{
+	char *ret, *s;
+	iks *x;
+
+	ret = iks_find_attrib (node, attr);
+	if (ret) return ret;
+
+	for (x = node; x; x = iks_parent (x)) {
+		s = iks_find_attrib (x, "text:style-name");
+		ret = get_style (ctx, node, s, attr);
+		if (ret) return ret;
+		s = iks_find_attrib (x, "presentation:style-name");
+		ret = get_style (ctx, node, s, attr);
+		if (ret) return ret;
+		s = iks_find_attrib (x, "draw:style-name");
+		ret = get_style (ctx, node, s, attr);
+		if (ret) return ret;
+	}
+	return NULL;
+}
+
+#if 0
+static iks *
+get_style_x (ImpRenderCtx *ctx, iks *node, char *style, char *attr)
+{
+	iks *x;
+
+	if (!style) return NULL;
+
+	if (iks_root (node) == ctx->content) {
+		x = iks_find_with_attrib (iks_find (ctx->content, "office:automatic-styles"),
+			"text:list-style", "style:name", style);
+	} else {
+		x = iks_find_with_attrib (iks_find (ctx->styles, "office:automatic-styles"),
+			"text:list-style", "style:name", style);
+	}
+	return x;
+}
+
+static iks *
+r_get_bullet (ImpRenderCtx *ctx, iks *node, char *attr)
+{
+	iks *ret;
+	char *s;
+	iks *x;
+
+	for (x = node; x; x = iks_parent (x)) {
+		s = iks_find_attrib (x, "text:style-name");
+		ret = get_style_x (ctx, node, s, attr);
+		if (ret) return ret;
+		s = iks_find_attrib (x, "presentation:style-name");
+		ret = get_style_x (ctx, node, s, attr);
+		if (ret) return ret;
+		s = iks_find_attrib (x, "draw:style-name");
+		ret = get_style_x (ctx, node, s, attr);
+		if (ret) return ret;
+	}
+	return NULL;
+}
+#endif
diff --git a/backend/impress/r_text.c b/backend/impress/r_text.c
new file mode 100644
index 00000000..4b89bcad
--- /dev/null
+++ b/backend/impress/r_text.c
@@ -0,0 +1,386 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+struct Span {
+	struct Span *next;
+	int x, y;
+	int w, h;
+	char *text;
+	int len;
+	int size;
+	int styles;
+	ImpColor fg;
+};
+
+struct Line {
+	struct Line *next;
+	struct Span *spans;
+	struct Span *last_span;
+	int x, y;
+	int w, h;
+};
+
+struct Layout {
+	ikstack *s;
+	int x, y, w, h;
+	int tw, th;
+	struct Line *lines;
+	struct Line *last_line;
+	char spaces[128];
+};
+
+static struct Line *
+add_line(struct Layout *lay)
+{
+	struct Line *line;
+
+	line = iks_stack_alloc(lay->s, sizeof(struct Line));
+	memset(line, 0, sizeof(struct Line));
+
+	if (!lay->lines) lay->lines = line;
+	if (lay->last_line) lay->last_line->next = line;
+	lay->last_line = line;
+
+	return line;
+}
+
+static struct Span *
+add_span(struct Layout *lay, char *text, int len, int size, int styles)
+{
+	struct Line *line;
+	struct Span *span;
+
+	span = iks_stack_alloc(lay->s, sizeof(struct Span));
+	memset(span, 0, sizeof(struct Span));
+	span->text = text;
+	span->len = len;
+	span->size = size;
+	span->styles = styles;
+
+	line = lay->last_line;
+	if (!line) line = add_line(lay);
+	if (line->spans) {
+		span->x = line->last_span->x + line->last_span->w;
+		span->y = line->last_span->y;
+	} else {
+		span->x = line->x;
+		span->y = line->y;
+	}
+
+	if (!line->spans) line->spans = span;
+	if (line->last_span) line->last_span->next = span;
+	line->last_span = span;
+
+	return span;
+}
+
+static void
+calc_sizes(ImpRenderCtx *ctx, void *drw_data, struct Layout *lay)
+{
+	struct Line *line;
+	struct Span *span;
+
+	for (line = lay->lines; line; line = line->next) {
+		for (span = line->spans; span; span = span->next) {
+			ctx->drw->get_text_size(drw_data,
+				span->text, span->len,
+				span->size, span->styles,
+				&span->w, &span->h
+			);
+			line->w += span->w;
+			if (span->h > line->h) line->h = span->h;
+		}
+		if (line->w > lay->tw) lay->tw = line->w;
+		lay->th += line->h;
+	}
+}
+
+static void
+calc_pos(ImpRenderCtx *ctx, struct Layout *lay)
+{
+	struct Line *line;
+	struct Span *span;
+	int x, y, x2;
+
+	x = lay->x;
+	y = lay->y;
+	for (line = lay->lines; line; line = line->next) {
+		line->x = x;
+		line->y = y;
+		y += line->h;
+		x2 = x;
+		for (span = line->spans; span; span = span->next) {
+			span->x = x2;
+			span->y = y;
+			x2 += span->w;
+		}
+	}
+}
+
+static void
+_imp_draw_layout(ImpRenderCtx *ctx, void *drw_data, struct Layout *lay)
+{
+	struct Line *line;
+	struct Span *span;
+
+	for (line = lay->lines; line; line = line->next) {
+		for (span = line->spans; span; span = span->next) {
+			ctx->drw->set_fg_color(drw_data, &span->fg);
+			ctx->drw->draw_text(drw_data,
+				span->x, span->y,
+				span->text, span->len,
+				span->size,
+				span->styles
+			);
+		}
+	}
+}
+
+static void
+text_span(ImpRenderCtx *ctx, struct Layout *lay, iks *node, char *text, size_t len)
+{
+	struct Span *span;
+	double cm;
+	char *attr, *t, *s;
+	int px = 0, cont = 1;
+	int styles = IMP_NORMAL;
+
+	attr = r_get_style(ctx, node, "fo:font-size");
+	if (attr) {
+		cm = atof(attr);
+		if (strstr(attr, "pt")) cm = cm * 2.54 / 102;
+		px = cm * ctx->fact_y;
+	}
+	attr = r_get_style(ctx, node, "fo:font-weight");
+	if (attr && strcmp(attr, "bold") == 0) styles |= IMP_BOLD;
+	attr = r_get_style(ctx, node, "style:text-underline");
+	if (attr && strcmp(attr, "single") == 0) styles |= IMP_UNDERLINE;
+	attr = r_get_style(ctx, node, "fo:font-style");
+	if (attr && strcmp(attr, "italic") == 0) styles |= IMP_ITALIC;
+
+	t = text;
+	while (cont) {
+		s = strchr(t, '\n');
+		if (s) {
+			int len2 = s - t;
+			span = add_span(lay, t, len2, px, styles);
+			t = s + 1;
+			len -= len2;
+			add_line(lay);
+		} else {
+			span = add_span(lay, text, len, px, styles);
+			cont = 0;
+		}
+		r_get_color(ctx, node, "fo:color", &span->fg);
+	}
+}
+
+static void
+text_p(ImpRenderCtx *ctx, struct Layout *lay, iks *node)
+{
+	iks *n, *n2;
+
+	add_line(lay);
+	for (n = iks_child(node); n; n = iks_next(n)) {
+		if (iks_type(n) == IKS_CDATA) {
+			text_span(ctx, lay, node, iks_cdata(n), iks_cdata_size(n));
+		} else if (iks_strcmp(iks_name(n), "text:span") == 0) {
+			for (n2 = iks_child(n); n2; n2 = iks_next(n2)) {
+				if (iks_type(n2) == IKS_CDATA) {
+					text_span(ctx, lay, n2, iks_cdata(n2), iks_cdata_size(n2));
+				} else if (iks_strcmp(iks_name(n2), "text:s") == 0) {
+					char *attr;
+					int c = 1;
+					attr = iks_find_attrib(n2, "text:c");
+					if (attr) c = atoi(attr);
+					if (c > 127) {
+						c = 127;
+						puts("bork bork");
+					}
+					text_span(ctx, lay, n, lay->spaces, c);
+				} else if (iks_strcmp(iks_name(n2), "text:a") == 0) {
+					text_span(ctx, lay, n, iks_cdata(iks_child(n2)), iks_cdata_size(iks_child(n2)));
+				} else if (iks_strcmp(iks_name(n2), "text:tab-stop") == 0) {
+					text_span(ctx, lay, n, "\t", 1);
+				} else if (iks_strcmp(iks_name(n2), "text:page-number") == 0) {
+					char buf[8];
+					sprintf(buf, "%d", ctx->page->nr);
+					text_span(ctx, lay, n, iks_stack_strdup(lay->s, buf, 0), strlen(buf));
+				}
+			}
+		} else if (iks_strcmp(iks_name(n), "text:line-break") == 0) {
+			add_line(lay);
+		} else if (iks_strcmp(iks_name(n), "text:a") == 0) {
+			text_span(ctx, lay, n, iks_cdata(iks_child(n)), iks_cdata_size(iks_child(n)));
+		} else if (iks_strcmp(iks_name(n), "text:page-number") == 0) {
+			char buf[8];
+			sprintf(buf, "%d", ctx->page->nr);
+			text_span(ctx, lay, n, iks_stack_strdup(lay->s, buf, 0), strlen(buf));
+		}
+	}
+}
+
+static void
+text_list(ImpRenderCtx *ctx, struct Layout *lay, iks *node)
+{
+	iks *n, *n2;
+
+	for (n = iks_first_tag(node); n; n = iks_next_tag(n)) {
+		for (n2 = iks_first_tag(n); n2; n2 = iks_next_tag(n2)) {
+			if (strcmp(iks_name(n2), "text:p") == 0) {
+				text_p(ctx, lay, n2);
+			} else if (strcmp(iks_name(n2), "text:ordered-list") == 0) {
+				text_list(ctx, lay, n2);
+			} else if (strcmp(iks_name(n2), "text:unordered-list") == 0) {
+				text_list(ctx, lay, n2);
+			} else if (strcmp(iks_name(n2), "text:list") == 0) {
+				text_list(ctx, lay, n2);
+			}
+		}
+	}
+}
+
+void
+r_text(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	struct Layout lay;
+	iks *n;
+
+	memset(&lay, 0, sizeof(struct Layout));
+	memset(&lay.spaces, ' ', 128);
+	lay.s = iks_stack_new(sizeof(struct Span) * 16, 0);
+	lay.x = r_get_x(ctx, node, "svg:x");
+	lay.y = r_get_y(ctx, node, "svg:y");
+	lay.w = r_get_y(ctx, node, "svg:width");
+	lay.h = r_get_y(ctx, node, "svg:height");
+
+	for (n = iks_first_tag(node); n; n = iks_next_tag(n)) {
+		if (strcmp(iks_name(n), "text:p") == 0) {
+			text_p(ctx, &lay, n);
+		} else if (strcmp(iks_name(n), "text:ordered-list") == 0) {
+			text_list(ctx, &lay, n);
+		} else if (strcmp(iks_name(n), "text:unordered-list") == 0) {
+			text_list(ctx, &lay, n);
+		} else if (strcmp(iks_name(n), "text:list") == 0) {
+			text_list(ctx, &lay, n);
+		}
+	}
+
+	calc_sizes(ctx, drw_data, &lay);
+	calc_pos(ctx, &lay);
+	_imp_draw_layout(ctx, drw_data, &lay);
+
+	iks_stack_delete(lay.s);
+}
+/*
+static void
+text_span (render_ctx *ctx, text_ctx *tc, struct layout_s *lout, iks *node, char *text, int len)
+{
+	if (tc->bullet_flag && tc->bullet_sz) size = tc->bullet_sz; else size = r_get_font_size (ctx, tc, node);
+}
+
+static int
+is_animated (render_ctx *ctx, text_ctx *tc, iks *node)
+{
+	if (!ctx->step_mode) return 0;
+	if (!tc->id) return 0;
+	while (strcmp (iks_name (node), "draw:page") != 0
+		&& strcmp (iks_name (node), "style:master-page") != 0)
+			node = iks_parent (node);
+	node = iks_find (node, "presentation:animations");
+	if (!node) return 0;
+	if (iks_find_with_attrib (node, "presentation:show-text", "draw:shape-id", tc->id)) return 1;
+	return 0;
+}
+
+static void
+text_p (render_ctx *ctx, text_ctx *tc, iks *node)
+{
+	if (is_animated (ctx, tc, node) && ctx->step_cnt >= ctx->step) lout->flag = 0;
+	ctx->step_cnt++;
+
+	attr = r_get_style (ctx, node, "text:enable-numbering");
+	if (attr && strcmp (attr, "true") == 0) {
+		if (iks_child (node) && tc->bullet) {
+			tc->bullet_flag = 1;
+			text_span (ctx, tc, lout, node, tc->bullet, strlen (tc->bullet));
+			text_span (ctx, tc, lout, node, " ", 1);
+			tc->bullet_flag = 0;
+		}
+	}
+
+	if (!lout->text) {
+lout->h = 0;
+attr = r_get_style (ctx, node, "fo:line-height");
+if (attr) {
+	int ratio = atoi (attr);
+	lout->lh = ratio;
+} else {
+	lout->lh = 100;
+}
+tc->layouts = g_list_append (tc->layouts, lout);
+//		g_object_unref (lout->play);
+//		iks_stack_delete (s);
+		return;
+	}
+
+	attr = r_get_style (ctx, node, "fo:text-align");
+	if (attr) {
+		if (strcmp (attr, "center") == 0)
+			pango_layout_set_alignment (lout->play, PANGO_ALIGN_CENTER);
+		else if (strcmp (attr, "end") == 0)
+			pango_layout_set_alignment (lout->play, PANGO_ALIGN_RIGHT);
+	}
+	pango_layout_set_width (lout->play, tc->w * PANGO_SCALE);
+	pango_layout_set_markup (lout->play, lout->text, lout->text_len);
+	pango_layout_get_pixel_size (lout->play, &lout->w, &lout->h);
+	attr = r_get_style (ctx, node, "fo:line-height");
+	if (attr) {
+		int ratio = atoi (attr);
+		lout->lh = ratio;
+	} else {
+		lout->lh = 100;
+	}
+	tc->layouts = g_list_append (tc->layouts, lout);
+}
+
+static void
+find_bullet (render_ctx *ctx, text_ctx *tc, iks *node)
+{
+	iks *x;
+	char *t;
+	x = r_get_bullet (ctx, node, "text:list-level-style-bullet");
+	x = iks_find (x, "text:list-level-style-bullet");
+	t = iks_find_attrib (x, "text:bullet-char");
+	if (t) tc->bullet = t; else tc->bullet = "*";
+	x = iks_find (x, "style:properties");
+	t = iks_find_attrib (x, "fo:font-size");
+	if (t) tc->bullet_sz = tc->last_sz * atoi (t) / 100;
+	else tc->bullet_sz = 0;
+}
+
+void
+r_text (render_ctx *ctx, iks *node)
+{
+	tc.id = iks_find_attrib (node, "draw:id");
+	ctx->step_cnt = 0;
+	for (n = iks_first_tag (node); n; n = iks_next_tag (n)) {
+		if (strcmp (iks_name (n), "text:p") == 0) {
+			text_p (ctx, &tc, n);
+		} else if (strcmp (iks_name (n), "text:ordered-list") == 0) {
+			text_list (ctx, &tc, n);
+		} else if (strcmp (iks_name (n), "text:unordered-list") == 0) {
+			find_bullet (ctx, &tc, n);
+			text_list (ctx, &tc, n);
+			tc.bullet = 0;
+		}
+	}
+
+*/
diff --git a/backend/impress/render.c b/backend/impress/render.c
new file mode 100644
index 00000000..67b80756
--- /dev/null
+++ b/backend/impress/render.c
@@ -0,0 +1,54 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "internal.h"
+
+ImpRenderCtx *
+imp_create_context(const ImpDrawer *drw)
+{
+	ImpRenderCtx *ctx;
+
+	ctx = calloc(1, sizeof(ImpRenderCtx));
+	if (!ctx) return NULL;
+	ctx->drw = drw;
+	return ctx;
+}
+
+void
+imp_context_set_page(ImpRenderCtx *ctx, ImpPage *page)
+{
+	ctx->page = page;
+	ctx->content = page->doc->content;
+	ctx->styles = page->doc->styles;
+}
+
+void
+imp_context_set_step(ImpRenderCtx *ctx, int step)
+{
+	ctx->step = step;
+}
+
+void
+imp_render(ImpRenderCtx *ctx, void *drw_data)
+{
+	// find drawing area size
+	ctx->drw->get_size(drw_data, &ctx->pix_w, &ctx->pix_h);
+	// find page size
+	ctx->page->doc->get_geometry(ctx);
+	// calculate ratio
+	ctx->fact_x = ctx->pix_w / ctx->cm_w;
+	ctx->fact_y = ctx->pix_h / ctx->cm_h;
+	// call renderer
+	ctx->page->doc->render_page(ctx, drw_data);
+}
+
+void
+imp_delete_context(ImpRenderCtx *ctx)
+{
+	free(ctx);
+}
diff --git a/backend/impress/zip.c b/backend/impress/zip.c
new file mode 100644
index 00000000..b1f25c8c
--- /dev/null
+++ b/backend/impress/zip.c
@@ -0,0 +1,349 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+#include <config.h>
+#include "common.h"
+#include "zip.h"
+#include <zlib.h>
+#define _(x) x
+
+typedef unsigned long ulong;
+
+enum {
+	ZIP_OK = 0,
+	ZIP_NOMEM,
+	ZIP_NOSIG,
+	ZIP_BADZIP,
+	ZIP_NOMULTI,
+	ZIP_EOPEN,
+	ZIP_EREAD,
+	ZIP_NOFILE
+};
+
+struct zipfile {
+	struct zipfile *next;
+	char *name;
+	ulong crc;
+	ulong zip_size;
+	ulong real_size;
+	ulong pos;
+};
+
+struct zip_struct {
+	FILE *f;
+	struct zipfile *files;
+	ulong cd_pos;
+	ulong cd_size;
+	ulong cd_offset;
+	ulong head_size;
+	ulong rem_size;
+	ulong nr_files;
+};
+
+char *
+zip_error (int err)
+{
+	char *ret;
+
+	switch (err) {
+		case ZIP_OK:
+			ret = _("No error");
+			break;
+		case ZIP_NOMEM:
+			ret = _("Not enough memory");
+			break;
+		case ZIP_NOSIG:
+			ret = _("Cannot find ZIP signature");
+			break;
+		case ZIP_BADZIP:
+			ret = _("Invalid ZIP file");
+			break;
+		case ZIP_NOMULTI:
+			ret = _("Multi file ZIPs are not supported");
+			break;
+		case ZIP_EOPEN:
+			ret = _("Cannot open the file");
+			break;
+		case ZIP_EREAD:
+			ret = _("Cannot read data from file");
+			break;
+		case ZIP_NOFILE:
+			ret = _("Cannot find file in the ZIP archive");
+			break;
+		default:
+			ret = _("Unknown error");
+			break;
+	}
+	return ret;
+}
+
+static int
+find_cd (zip *z)
+{
+	FILE *f;
+	char *buf;
+	ulong size, pos, i, flag;
+
+	f = z->f;
+	if (fseek (f, 0, SEEK_END) != 0) return 1;
+	size = ftell (f);
+	if (size < 0xffff) pos = 0; else pos = size - 0xffff;
+	buf = malloc (size - pos + 1);
+	if (!buf) return 1;
+	if (fseek (f, pos, SEEK_SET) != 0) {
+		free (buf);
+		return 1;
+	}
+	if (fread (buf, size - pos, 1, f) != 1) {
+		free (buf);
+		return 1;
+	}
+	flag = 0;
+	for (i = size - pos - 3; i > 0; i--) {
+		if (buf[i] == 0x50 && buf[i+1] == 0x4b && buf[i+2] == 0x05 && buf[i+3] == 0x06) {
+			z->cd_pos = i + pos;
+			flag = 1;
+			break;
+		}
+	}
+	free (buf);
+	if (flag != 1) return 1;
+	return 0;
+}
+
+static unsigned long
+get_long (unsigned char *buf)
+{
+	return buf[0] + (buf[1] << 8) + (buf[2] << 16) + (buf[3] << 24);
+}
+
+static unsigned long
+get_word (unsigned char *buf)
+{
+	return buf[0] + (buf[1] << 8);
+}
+
+static int
+list_files (zip *z)
+{
+	unsigned char buf[46];
+	struct zipfile *zfile;
+	ulong pat, fn_size;
+	int nr = 0;
+
+	pat = z->cd_offset;
+	while (nr < z->nr_files) {
+		fseek (z->f, pat + z->head_size, SEEK_SET);
+
+		if (fread (buf, 46, 1, z->f) != 1) return ZIP_EREAD;
+		if (get_long (buf) != 0x02014b50) return ZIP_BADZIP;
+
+		zfile = malloc (sizeof (struct zipfile));
+		if (!zfile) return ZIP_NOMEM;
+		memset (zfile, 0, sizeof (struct zipfile));
+
+		zfile->crc = get_long (buf + 16);
+		zfile->zip_size = get_long (buf + 20);
+		zfile->real_size = get_long (buf + 24);
+		fn_size = get_word (buf + 28);
+		zfile->pos = get_long (buf + 42);
+
+		zfile->name = malloc (fn_size + 1);
+		if (!zfile->name) {
+			free (zfile);
+			return ZIP_NOMEM;
+		}
+		fread (zfile->name, fn_size, 1, z->f);
+		zfile->name[fn_size] = '\0';
+
+		zfile->next = z->files;
+		z->files = zfile;
+
+		pat += 0x2e + fn_size + get_word (buf + 30) + get_word (buf + 32);
+		nr++;
+	}
+	return ZIP_OK;
+}
+
+zip *
+zip_open (const char *fname, int *err)
+{
+	unsigned char buf[22];
+	zip *z;
+	FILE *f;
+
+	f = fopen (fname, "rb");
+	if (NULL == f) {
+		*err = ZIP_EOPEN;
+		return NULL;
+	}
+
+	z = malloc (sizeof (zip));
+	memset (z, 0, sizeof (zip));
+	z->f = f;
+
+	if (find_cd (z)) {
+		zip_close (z);
+		*err = ZIP_NOSIG;
+		return NULL;
+	}
+
+	fseek (f, z->cd_pos, SEEK_SET);
+	if (fread (buf, 22, 1, f) != 1) {
+		zip_close (z);
+		*err = ZIP_EREAD;
+		return NULL;
+	}
+	z->nr_files = get_word (buf + 10);
+	if (get_word (buf + 8) != z->nr_files) {
+		zip_close (z);
+		*err =  ZIP_NOMULTI;
+		return NULL;
+	}
+	z->cd_size = get_long (buf + 12);
+	z->cd_offset = get_long (buf + 16);
+	z->rem_size = get_word (buf + 20);
+	z->head_size = z->cd_pos - (z->cd_offset + z->cd_size);
+
+	*err = list_files (z);
+	if (*err != ZIP_OK) {
+		zip_close (z);
+		return NULL;
+	}
+
+	*err = ZIP_OK;
+	return z;
+}
+
+void
+zip_close (zip *z)
+{
+	struct zipfile *zfile, *tmp;
+
+	zfile = z->files;
+	while (zfile) {
+		tmp = zfile->next;
+		if (zfile->name) free (zfile->name);
+		free (zfile);
+		zfile = tmp;
+	}
+	z->files = NULL;
+	if (z->f) fclose (z->f);
+	z->f = NULL;
+}
+
+static struct zipfile *
+find_file (zip *z, const char *name)
+{
+	struct zipfile *zfile;
+
+	zfile = z->files;
+	while (zfile) {
+		if (strcmp (zfile->name, name) == 0) return zfile;
+		zfile = zfile->next;
+	}
+	return NULL;
+}
+
+static int
+seek_file (zip *z, struct zipfile *zfile)
+{
+	unsigned char buf[30];
+
+	fseek (z->f, zfile->pos + z->head_size, SEEK_SET);
+	if (fread (buf, 30, 1, z->f) != 1) return ZIP_EREAD;
+	if (get_long (buf) != 0x04034b50) return ZIP_BADZIP;
+	fseek (z->f, get_word (buf + 26) + get_word (buf + 28), SEEK_CUR);
+	return ZIP_OK;
+}
+
+iks *
+zip_load_xml (zip *z, const char *name, int *err)
+{
+	iksparser *prs;
+	char *real_buf;
+	iks *x;
+	struct zipfile *zfile;
+
+	*err = ZIP_OK;
+
+	zfile = find_file (z, name);
+	if (!zfile) {
+		*err = ZIP_NOFILE;
+		return NULL;
+	}
+
+	seek_file (z, zfile);
+
+	real_buf = malloc (zfile->real_size + 1);
+	if (zfile->zip_size < zfile->real_size) {
+		char *zip_buf;
+		z_stream zs;
+		zs.zalloc = NULL;
+		zs.zfree = NULL;
+		zs.opaque = NULL;
+		zip_buf = malloc (zfile->zip_size);
+		fread (zip_buf, zfile->zip_size, 1, z->f);
+		zs.next_in = zip_buf;
+		zs.avail_in = zfile->zip_size;
+		zs.next_out = real_buf;
+		zs.avail_out = zfile->real_size;
+		inflateInit2 (&zs, -MAX_WBITS);
+		inflate (&zs, Z_FINISH);
+		inflateEnd (&zs);
+		free (zip_buf);
+	} else {
+		fread (real_buf, zfile->real_size, 1, z->f);
+	}
+
+	real_buf[zfile->real_size] = '\0';
+	prs = iks_dom_new (&x);
+	iks_parse (prs, real_buf, zfile->real_size, 1);
+	iks_parser_delete (prs);
+	free (real_buf);
+	return x;
+}
+
+unsigned long zip_get_size (zip *z, const char *name)
+{
+	struct zipfile *zf;
+
+	zf = find_file (z, name);
+	if (!zf) return 0;
+	return zf->real_size;
+}
+
+int zip_load (zip *z, const char *name, char *buf)
+{
+	struct zipfile *zfile;
+
+	zfile = find_file (z, name);
+	if (!zfile) return ZIP_NOFILE;
+
+	seek_file (z, zfile);
+
+	if (zfile->zip_size < zfile->real_size) {
+		char *zip_buf;
+		z_stream zs;
+		zs.zalloc = NULL;
+		zs.zfree = NULL;
+		zs.opaque = NULL;
+		zip_buf = malloc (zfile->zip_size);
+		fread (zip_buf, zfile->zip_size, 1, z->f);
+		zs.next_in = zip_buf;
+		zs.avail_in = zfile->zip_size;
+		zs.next_out = buf;
+		zs.avail_out = zfile->real_size;
+		inflateInit2 (&zs, -MAX_WBITS);
+		inflate (&zs, Z_FINISH);
+		inflateEnd (&zs);
+		free (zip_buf);
+	} else {
+		fread (buf, zfile->real_size, 1, z->f);
+	}
+
+	return ZIP_OK;
+}
diff --git a/backend/impress/zip.h b/backend/impress/zip.h
new file mode 100644
index 00000000..23ff3631
--- /dev/null
+++ b/backend/impress/zip.h
@@ -0,0 +1,18 @@
+/* imposter (OO.org Impress viewer)
+** Copyright (C) 2003-2005 Gurer Ozen
+** This code is free software; you can redistribute it and/or
+** modify it under the terms of GNU General Public License.
+*/
+
+struct zip_struct;
+typedef struct zip_struct zip;
+
+char *zip_error (int err);
+
+zip *zip_open (const char *fname, int *err);
+void zip_close (zip *z);
+
+iks *zip_load_xml (zip *z, const char *name, int *err);
+
+unsigned long zip_get_size (zip *z, const char *name);
+int zip_load (zip *z, const char *name, char *buf);