From eebc645dee0d15871d6cc46f156d424cd916b191 Mon Sep 17 00:00:00 2001
From: KatolaZ <katolaz@freaknet.org>
Date: Tue, 30 Jul 2019 12:15:54 +0100
Subject: yank buffer and initial copy/cut/paste support

---
 gramscii.h | 36 ++++++++++++++++++++++++++++--------
 1 file changed, 28 insertions(+), 8 deletions(-)

(limited to 'gramscii.h')

diff --git a/gramscii.h b/gramscii.h
index b329d89..a08d211 100644
--- a/gramscii.h
+++ b/gramscii.h
@@ -5,13 +5,7 @@
 #include <termios.h>
 #include <unistd.h>
 
-/** types **/
 
-typedef struct{
-	int sz;
-	int lst;
-	char *s;
-} line_t;
 
 /** constants **/
 
@@ -50,6 +44,20 @@ typedef struct{
 #define VIDEO_NRM 0
 #define VIDEO_REV 7 
 
+/** types **/
+
+typedef struct{
+	int sz;/* allocated size*/
+	int n;/* line number */
+	int lst;/* last visible char (before the first \0) */
+	char *s;
+} line_t;
+
+typedef struct{
+	int sz;/* allocated size */
+	int num;/* number of lines stored */
+	line_t *l;
+} lineset_t;
 
 /** MACROS **/
 
@@ -63,8 +71,9 @@ typedef struct{
 
 /** global variables **/ 
 
-line_t *screen;
-int num_lines;
+lineset_t screen;
+lineset_t cutbuf;
+
 int WIDTH, HEIGHT;
 
 int mode;
@@ -96,6 +105,7 @@ char visual;
 char silent;
 char autoend;
 
+
 struct termios t1, t2, t3;
 
 /** screen-related functions **/
@@ -129,6 +139,7 @@ void get_box(FILE *fc);
 void get_arrow(FILE *fc);
 void erase(FILE *fc);
 void visual_box(FILE *fc);
+void paste();
 
 /** file-related functions **/
 void write_file(FILE *fc);
@@ -136,5 +147,14 @@ void check_modified(FILE *fc);
 void load_file(FILE *fc);
 void new_file(FILE *fc);
 
+/** line-related functions **/
+
+void dump_lines(lineset_t ls, FILE *f);
+void alloc_line(line_t *l);
+void ensure_line_length(line_t *l, int len);
+void ensure_num_lines(lineset_t *ls, int n);
+void yank_region(int x1, int y1, int x2, int y2);
+void paste_region(int x1, int y1);
+
 
 #endif
-- 
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