1 files changed, 94 insertions, 0 deletions
diff --git a/src/notes.c b/src/notes.c
index 026612b..58ca008 100644
--- a/src/notes.c
+++ b/src/notes.c
@@ -90,6 +90,100 @@ static gint close_notes_sig(GtkWidget *w, struct presentation *p)
 }
 
 
+static char *escape_text(const char *a)
+{
+	char *b;
+	size_t l1, l, i;
+
+	l1 = strlen(a);
+
+	b = malloc(2*l1 + 1);
+	l = 0;
+
+	for ( i=0; i<l1; i++ ) {
+
+		char c = a[i];
+
+		/* Yes, this is horribly confusing */
+		if ( c == '\n' ) {
+			b[l++] = '\\';  b[l++] = 'n';
+		} else if ( c == '\r' ) {
+			b[l++] = '\\';  b[l++] = 'r';
+		} else if ( c == '\"' ) {
+			b[l++] = '\\';  b[l++] = '\"';
+		} else if ( c == '\t' ) {
+			b[l++] = '\\';  b[l++] = 't';
+		} else {
+			b[l++] = c;
+		}
+
+	}
+	b[l++] = '\0';
+
+	return realloc(b, l);
+}
+
+
+static char *unescape_text(const char *a)
+{
+	char *b;
+	size_t l1, l, i;
+	int escape;
+
+	l1 = strlen(a);
+
+	b = malloc(l1 + 1);
+	l = 0;
+	escape = 0;
+
+	for ( i=0; i<l1; i++ ) {
+
+		char c = a[i];
+
+		if ( escape ) {
+			if ( c == 'r' ) b[l++] = '\r';
+			if ( c == 'n' ) b[l++] = '\n';
+			if ( c == '\"' ) b[l++] = '\"';
+			if ( c == 't' ) b[l++] = '\t';
+			escape = 0;
+			continue;
+		}
+
+		if ( c == '\\' ) {
+			escape = 1;
+			continue;
+		}
+
+		b[l++] = c;
+
+	}
+	b[l++] = '\0';
+
+	return realloc(b, l);
+}
+
+
+void write_notes(struct slide *s, struct serializer *ser)
+{
+	char *es;
+
+	es = escape_text(s->notes);
+	serialize_s(ser, "notes", es);
+	free(es);
+}
+
+
+void load_notes(struct ds_node *node, struct slide *s)
+{
+	char *v;
+
+	if ( get_field_s(node, "notes", &v) ) return;
+
+	s->notes = unescape_text(v);
+	free(v);
+}
+
+
 void open_notes(struct presentation *p)
 {
 	struct notes *n;