1 files changed, 189 insertions, 0 deletions

diff --git a/src/presentation.c b/src/presentation.c
index 405cf49..a94b220 100644
--- a/src/presentation.c
+++ b/src/presentation.c
@@ -32,6 +32,8 @@
 
 #include "presentation.h"
 #include "stylesheet.h"
+#include "loadsave.h"
+#include "mainwindow.h"
 
 
 static int num_presentations = 0;
@@ -224,3 +226,190 @@ struct presentation *new_presentation()
 
 	return new;
 }
+
+
+int save_presentation(struct presentation *p, const char *filename)
+{
+	FILE *fh;
+	int i;
+	struct serializer ser;
+	char *old_fn;
+
+	//grab_current_notes(p);
+
+	fh = fopen(filename, "w");
+	if ( fh == NULL ) return 1;
+
+	/* Set up the serializer */
+	ser.fh = fh;
+	ser.stack_depth = 0;
+	ser.prefix = NULL;
+
+	fprintf(fh, "# Colloquium presentation file\n");
+	serialize_f(&ser, "version", 0.1);
+
+	serialize_start(&ser, "slide-properties");
+	serialize_f(&ser, "width", p->slide_width);
+	serialize_f(&ser, "height", p->slide_height);
+	serialize_end(&ser);
+
+	serialize_start(&ser, "stylesheet");
+	write_stylesheet(p->ss, &ser);
+	serialize_end(&ser);
+
+	serialize_start(&ser, "slides");
+	for ( i=0; i<p->num_slides; i++ ) {
+
+		struct slide *s;
+		char s_id[32];
+
+		s = p->slides[i];
+
+		snprintf(s_id, 31, "%i", i);
+		serialize_start(&ser, s_id);
+
+		/* FIXME: Save stuff */
+
+		serialize_end(&ser);
+
+	}
+	serialize_end(&ser);
+
+	/* Slightly fiddly because someone might
+	 * do save_presentation(p, p->filename) */
+	old_fn = p->filename;
+	p->filename = strdup(filename);
+	if ( old_fn != NULL ) free(old_fn);
+	update_titlebar(p);
+
+	fclose(fh);
+	return 0;
+}
+
+
+static struct slide *tree_to_slide(struct presentation *p, struct ds_node *root)
+{
+	struct slide *s;
+
+	s = new_slide();
+	s->parent = p;
+
+	/* FIXME: Load stuff */
+
+	return s;
+}
+
+
+static int tree_to_slides(struct ds_node *root, struct presentation *p)
+{
+	int i;
+
+	for ( i=0; i<root->n_children; i++ ) {
+
+		struct slide *s;
+
+		s = tree_to_slide(p, root->children[i]);
+		if ( s != NULL ) {
+			insert_slide(p, s, p->num_slides-1);
+		}
+
+	}
+
+	return 0;
+}
+
+
+int tree_to_presentation(struct ds_node *root, struct presentation *p)
+{
+	struct ds_node *node;
+	char *check;
+	int i;
+
+	p->cur_edit_slide = NULL;
+	p->cur_proj_slide = NULL;
+
+	node = find_node(root, "slide-properties/width", 0);
+	if ( node == NULL ) return 1;
+	p->slide_width = strtod(node->value, &check);
+	if ( check == node->value ) {
+		fprintf(stderr, "Invalid slide width\n");
+		return 1;
+	}
+
+	node = find_node(root, "slide-properties/height", 0);
+	if ( node == NULL ) return 1;
+	p->slide_height = strtod(node->value, &check);
+	if ( check == node->value ) {
+		fprintf(stderr, "Invalid slide height\n");
+		return 1;
+	}
+
+	node = find_node(root, "stylesheet", 0);
+	if ( node != NULL ) {
+		free_stylesheet(p->ss);
+		p->ss = tree_to_stylesheet(node);
+		if ( p->ss == NULL ) {
+			fprintf(stderr, "Invalid style sheet\n");
+			return 1;
+		}
+	}
+
+	for ( i=0; i<p->num_slides; i++ ) {
+		free_slide(p->slides[i]);
+		p->num_slides = 0;
+	}
+
+	node = find_node(root, "slides", 0);
+	if ( node != NULL ) {
+		tree_to_slides(node, p);
+		if ( p->num_slides == 0 ) {
+			fprintf(stderr, "Failed to load any slides\n");
+			p->cur_edit_slide = add_slide(p, 0);
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+
+int load_presentation(struct presentation *p, const char *filename)
+{
+	FILE *fh;
+	struct ds_node *root;
+	int r;
+
+	assert(p->completely_empty);
+
+	fh = fopen(filename, "r");
+	if ( fh == NULL ) return 1;
+
+	root = new_ds_node("root");
+	if ( root == NULL ) return 1;
+
+	if ( deserialize_file(fh, root) ) {
+		fclose(fh);
+		return 1;
+	}
+
+	r = tree_to_presentation(root, p);
+	free_ds_tree(root);
+
+	fclose(fh);
+
+	if ( r ) {
+		p->cur_edit_slide = new_slide();
+		insert_slide(p, p->cur_edit_slide, 0);
+		p->completely_empty = 1;
+		return r;  /* Error */
+	}
+
+	assert(p->filename == NULL);
+	p->filename = strdup(filename);
+	update_titlebar(p);
+
+	p->cur_edit_slide = p->slides[0];
+
+	return 0;
+}
+