#include <asm/unistd_32.h>
.intel_syntax noprefix

.text
.global _start

_start:
    //make system call brk which returs a pointer of a new end of memory
    mov esi, 0  //stack capacity
    mov eax, __NR_brk
    mov ebx, 0
    int 0x80
    mov edi, eax    //edi is the poiter of heap sbrk
    push edi    //saving edi
loop_read:
    //if buffer is not empty
    cmp esi, 0
    jg read
    //else realloc
    mov esi, 2048
    add edi, esi    //edi is adding as well
    //again make systerm call brk
    mov eax, __NR_brk
    mov ebx, edi    //because now edi is N*2048 bytes
    int 0x80
    //get edi old value which is 0
    sub edi, esi
read:
    //reading while capacity is not 0
    //make system call read
    mov eax, __NR_read
    mov ebx, 0
    mov ecx, edi    // *buffer
    mov edx, esi    //size_t n_bytes
    int 0x80
    //if there was nothing to read go to write
    test eax, eax
    jz get_endl
    //else saving to edi and change esi(capacity)
    add edi, eax
    sub esi, eax
    jmp loop_read
get_endl:
    //need endl '\n'
    mov al, '\n'   //al is the 8-bit register of 32-bit eax register(lower 8-bit)
    mov [edi], al   //load to the end of text '\n' symbol
loop_write:
    mov esi, edi
write:
    //if edi is the end go to end
    cmp edi, [esp]
    je end
    //write each char
    sub edi, 1
    mov al, '\n'
    cmp [edi], al   //comparing new char with endl
    je write_line

    jmp write
write_line:
    //wring line
    //make system call
    mov eax, __NR_write
    mov ebx, 1
    mov ecx, edi   // *buffer
    //ecx += 1
    add ecx, 1
    mov edx, esi   //size_t n_bytes
    sub edx, edi
    int 0x80
    jmp loop_write
end:
    //wring the last line
    //making system call
    mov eax, __NR_write
    mov ebx, 1
    mov ecx, edi
    mov edx, esi
    sub edx, edi
    inc edx
    int 0x80
    //exit
    pop edi
    mov eax, __NR_exit
    mov ebx, 0
    int 0x80