dos-commands.asm

%include "Assembly/Exam/macro.asm"; use your own macro
;create two file with name file1.txt and file2.txt 
;first you have to enter your choice i.e. 1 or 2 or 3....
;then enter commands 
;give first file name as file1.txt and second file name as file2.txt

section .data
	cmd db 0xa, "command menu"
	    db 0xa,"1.TYPE"
	    db 0xa,"2.COPY"
	    db 0xa,"3.DELETE"
	    db 0xa,"4.EXIT",0xa
	len equ $ - cmd
	entercmd db 0xa,"Enter command:------: "
	cmdlen equ $ - entercmd
	msg0 db 0xa,"Failed to open the file!!!"
	len0 equ $ - msg0
	msg1 db 0xa,"File opened successfully!!!"
	len1 equ $ - msg1
	msg2 db 0xa,"Failed to open the file!!!"
	len2 equ $ - msg2
	msg3 db 0xa, "Command not found!!!!",0xa
	len3 equ $ - msg3
	
section .bss
	buffer resb 200
	bufferlen resb 8
	choice resb 50
	chlen equ $ - choice
	fdis1 resb 200
	fdis2 resb 200
	cnt1 resb 2
	ch1 resb 2
	name1 resb 20
	name2 resb 20
	size resb 200
section .text
global _start
_start:
	iomodule 1, 1, cmd, len
	iomodule 0, 0, ch1, 2
	mov rsi, ch1
	cmp byte[rsi], '1'
	je TYPE
	cmp byte[rsi], '2'
	je COPY
	cmp byte[rsi], '3'
	je DELETE
	cmp byte[rsi], '4'
	exit
	jmp error
	
TYPE:
	iomodule 1, 1, entercmd, cmdlen
	iomodule 0, 0, choice, chlen
	mov rsi, choice
	mov byte[size], al
	dec byte[size]
	mov al, byte[rsi]
nd:
	
	cmp al, 't'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'y'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'p'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'e'
	jne error
	inc rsi
	dec byte[size]
	
	jmp success
error:
	iomodule 1, 1, msg3, len3
	jmp _start
success:
	inc rsi
	dec byte[size]
	mov rdi, name1
top:
	mov al, byte[rsi]
	mov [rdi], al
	inc rdi
	inc rsi
	dec byte[size]
	jnz top
	
	;iomodule 1, 1, name1, 50
	iomodule 2, name1, 2, 777
	mov qword[fdis1], rax
	bt rax, 63
	jc error
	
	iomodule 0, [fdis1], buffer, 200
	mov qword[cnt1], rax
	
	iomodule 1, 1, buffer, qword[cnt1]
	
	mov rax, 3
	mov rdi, name1
	syscall
	jmp _start
	
DELETE:
	iomodule 1, 1, entercmd, cmdlen
	iomodule 0, 0, choice, chlen
	mov byte[size], al
	dec byte[size]
	mov al, byte[rsi]
nd1:
	cmp al, 'd'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'e'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'l'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'e'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 't'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'e'
	jne error
	inc rsi
	dec byte[size]
	jmp success1
success1:
	inc rsi
	dec byte[size]
	mov rdi, name2
top1:
	mov al, byte[rsi]
	mov [rdi], al
	inc rdi
	inc rsi
	dec byte[size]
	jnz top1
	
	mov rax, 87
	mov rdi, name2
	syscall
	jmp _start
	
COPY:
	iomodule 1, 1, entercmd, cmdlen
	iomodule 0, 0, choice, chlen
	mov byte[size], al
	dec byte[size]
	mov al, byte[rsi]
nd2:
	cmp al, 'c'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'o'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'p'
	jne error
	inc rsi
	dec byte[size]
	mov al, byte[rsi]
	cmp al, 'y'
	jne error
	inc rsi
	dec byte[size]
	
	jmp success2
success2:
        inc rsi
	dec byte[size]
	mov rdi, name1
	mov rcx, 9
nsp:
	mov al, [rsi]
	mov [rdi], al
	inc edi
	inc rsi
	dec byte[size]
	loop nsp
	
	inc rsi
	dec byte[size]
        xor rdi, rdi
	mov rdi, name2
nnl:
	mov al, [rsi]
	mov [rdi], al
	inc rdi
	inc rsi
	dec byte[size]
	jnz nnl

	
	;iomodule 1, 1, name1, 10
	iomodule 2, name1, 2, 777
	mov qword[fdis1], rax
	
	
	iomodule 0, [fdis1], buffer, 200
	mov qword[cnt1], rax
	;iomodule 1, 1, buffer, [cnt1]
	
	;iomodule 1, 1, name2, 50
	iomodule 2, name2, 2, 777
	mov qword[fdis2], rax
	
	iomodule 1, [fdis2], buffer, qword[cnt1]
	
	mov rax, 3 
	mov rdi, name1
	syscall
	mov rax, 3
	mov rdi, name2
	syscall

jmp _start
	
	exit