1 files changed, 139 insertions, 0 deletions
diff --git a/backend/impress/document.c b/backend/impress/document.c
new file mode 100644
index 0000000..8ecbfae
--- /dev/null
+++ b/backend/impress/document.c
@@ -0,0 +1,139 @@
+/* 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 "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);
+}