restore session

1 files changed, 15 insertions, 1 deletions

diff --git a/buffer.c b/buffer.c
index a3d9c51..28ec364 100644
--- a/buffer.c
+++ b/buffer.c
@@ -112,7 +112,6 @@ void buffer_create(TextBuffer *buffer, Ted *ted) {
 	buffer->ted = ted;
 }
 
-
 void line_buffer_create(TextBuffer *buffer, Ted *ted) {
 	buffer_create(buffer, ted);
 	buffer->is_line_buffer = true;
@@ -142,6 +141,21 @@ static bool buffer_pos_valid(TextBuffer *buffer, BufferPos p) {
 	return p.line < buffer->nlines && p.index <= buffer->lines[p.line].len;
 }
 
+// write a buffer position to a file
+void buffer_pos_write(BufferPos pos, FILE *fp) {
+	write_u32(fp, pos.line);
+	write_u32(fp, pos.index);
+}
+
+// read a buffer position from a file, and validate it
+BufferPos buffer_pos_read(TextBuffer *buffer, FILE *fp) {
+	BufferPos pos = {0};
+	pos.line = read_u32(fp);
+	pos.index = read_u32(fp);
+	buffer_pos_validate(buffer, &pos);
+	return pos;
+}
+
 // are there any unsaved changes?
 bool buffer_unsaved_changes(TextBuffer *buffer) {
 	if (buffer_is_untitled(buffer) && buffer_empty(buffer))