Svim Upgrade

kernel.nasm

@@ -287,7 +287,7 @@ global_vars:
                                     ; this is the bios ID
 
 data:
-    welcome db "###############################################################################", 13, 10, "# Welcome to SingOS VERSION 0.0.5.1                                           #", 13, 10, "#                                                                             #", 13, 10, "###############################################################################", 13, 10, 'Press ESC to halt.', 13, 10, 13, 10, 0
+    welcome db "###############################################################################", 13, 10, "# Welcome to SingOS - Richard Stallman Edition                                #", 13, 10, "# This build marks the visit of Richard Stallman, SDU Odense, May 7, 2019     #", 13, 10, "###############################################################################", 13, 10, 'Press ESC to halt.', 13, 10, 13, 10, 0
     exit_message db 13, 10, 'Goodbye from SingOS',13,10,'The system has halted.', 0
     command_line db 13, 10, 'groot@SingOS $ ', 0
     number_one_zstring db '71', 0

lib/svim.nasm

@@ -13,6 +13,7 @@ svim:
     mov WORD [svim_counter_char_in_left_buffer], 0 ; reset these to zero
     mov WORD [svim_counter_char_in_right_buffer], 0 
     mov WORD [svim_get_cursor_distance_to_next_line_break], 0
+    mov BYTE [svim_save_on_exit], 0
 
     call os_clear_screen
     
@@ -210,8 +211,10 @@ svim:
 .no_special_key_pressed:
     cmp ax, 0x11b ; ESC key
     je .end_svim
-    ;cmp ax, 0x3c00 ; f2 key
-    ;je .f_key_pushed
+    cmp ax, 0x3c00 ; f2 key
+    je .f2_key_pushed
+    cmp ax, 0x3d00 ; f3 key
+    je .f3_key_pushed
     cmp ax, 0x0e08 ; backspace
     je .backspace_pushed
     mov bx, ax
@@ -246,14 +249,31 @@ svim:
     mov bx, [buffer_for_svim_base_left_of_cursor]
     mov cx, [svim_counter_char_in_left_buffer]
 
+    mov dl, [svim_save_on_exit] 
+    test dl, dl ; if zero qiut without exit
+    jz .svim_quit
+
     call lsfs_write_file
 
+.svim_quit:
     call os_clear_screen
     add sp, svim_magic_buffer_size
     add sp, svim_magic_buffer_size
     popa
     ret
 
+.f2_key_pushed:
+    mov al, 1 
+    mov [svim_save_on_exit], al 
+    call svim_redraw_window
+    jmp .svim_loop 
+
+.f3_key_pushed:
+    mov al, 0 
+    mov [svim_save_on_exit], al
+    call svim_redraw_window 
+    jmp .svim_loop
+
 .backspace_pushed:
     mov bx, [svim_counter_char_in_left_buffer]
     cmp bx, 0
@@ -476,6 +496,16 @@ svim_redraw_window:
     mov si, welcome_svim
     call print
 
+    mov al, [svim_save_on_exit]
+    test al, al
+    jz .not_save_mode 
+    mov si, svim_string_save
+    jmp .after_not_safe_mode
+.not_save_mode:
+    mov si, svim_string_not_save
+.after_not_safe_mode:
+    call print
+
     ; move cursor to the top 
     xor ax, ax
     xor bx, bx 
@@ -505,8 +535,11 @@ buffer_for_svim_base_right_of_cursor dw 0
 svim_counter_char_in_left_buffer dw 0
 svim_counter_char_in_right_buffer dw 0
 seperate_line  db '________________________________________________________________________________', 0
-welcome_svim db 'Vim like text editor for SingOS, ESC to exit', 0
-welcome_svim_select_file db 'svim v0.1.1 - Open file: ', 0
+welcome_svim db 'Vim like text editor for SingOS, ESC to exit svim - ', 0
+svim_string_save db 'save-mode', 0
+svim_string_not_save db 'not-save-mode', 0
+welcome_svim_select_file db 'svim v0.2.0 - Open file: ', 0
 welcome_svim_enter_fileindex db 'Enter fileindex: ', 0
 fileindex_for_open_file dw 0
-svim_total_file_size_counter dw 0
+svim_total_file_size_counter dw 0
+svim_save_on_exit db 0