user: Demonstrate the C code that generates the assembly output below:

```asm
<getUserCommand>:
  endbr64
  push   %r15
  xor    %r15d,%r15d
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x238,%rsp
  mov    D8(%rip),%rbx
  mov    %rdi,0x18(%rsp)
  lea    0x20(%rsp),%rbp
  mov    %rsi,0x10(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x228(%rsp)
  xor    %eax,%eax
  jmp    L50
  nopl   0x0(%rax,%rax,1)
L67:
  cmp    $0xa,%al
  je     L127
L50:
  xor    %eax,%eax
  mov    %r15d,%r12d
  call   <getchar@plt>
  mov    %al,0x0(%rbp,%r15,1)
  add    $0x1,%r15
  cmp    %al,(%rbx)
  jne    L67
L127:
  movslq %r12d,%rbx
  movb   $0x0,0x20(%rsp,%rbx,1)
  test   %r12d,%r12d
  je     L16
  mov    %rbp,%rdx
  xor    %eax,%eax
  nopl   0x0(%rax)
L89:
  movzbl (%rdx),%ecx
  mov    %eax,%r15d
  add    $0x1,%eax
  cmp    $0x20,%cl
  je     L158
  cmp    $0xa,%cl
  je     L158
  add    $0x1,%rdx
  cmp    %eax,%r12d
  jne    L89
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %rbp,%rsi
  movb   $0x0,0x20(%rsp,%rbx,1)
  mov    %rax,%rdi
  mov    0x18(%rsp),%rax
  mov    %rdi,(%rax)
  call   <strcpy@plt>
  nopl   0x0(%rax)
L7:
  mov    $0x1,%eax
L138:
  mov    0x228(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L81
  add    $0x238,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L158:
  mov    %r15d,%edi
  call   <malloc@plt>
  mov    %rbp,%rsi
  mov    %rax,%rdi
  mov    0x18(%rsp),%rax
  mov    %rdi,(%rax)
  movslq %r15d,%rax
  add    $0x1,%r15d
  movb   $0x0,0x20(%rsp,%rax,1)
  call   <strcpy@plt>
  cmp    %r15d,%r12d
  jl     L5
  movslq %r15d,%rbx
  xor    %r14d,%r14d
  nopw   0x0(%rax,%rax,1)
L83:
  movzbl 0x0(%rbp,%rbx,1),%eax
  mov    %ebx,%edi
  lea    0x1(%rbx),%r13d
  test   $0xdf,%al
  je     L40
  cmp    $0xa,%al
  jne    L9
L40:
  mov    0x10(%rsp),%rdx
  movslq %r14d,%rax
  sub    %r15d,%edi
  add    $0x1,%r14d
  add    $0x1,%edi
  lea    (%rdx,%rax,8),%rsi
  mov    %rsi,0x8(%rsp)
  call   <malloc@plt>
  mov    0x8(%rsp),%rsi
  movb   $0x0,0x0(%rbp,%rbx,1)
  mov    %rax,%rdi
  mov    %rax,(%rsi)
  movslq %r15d,%rsi
  mov    %r13d,%r15d
  add    %rbp,%rsi
  call   <strcpy@plt>
L9:
  add    $0x1,%rbx
  cmp    %ebx,%r12d
  jge    L83
L5:
  mov    0x18(%rsp),%rax
  cmpq   $0x0,(%rax)
  jne    L7
  mov    0x10(%rsp),%rcx
  xor    %eax,%eax
  cmpq   $0x0,(%rcx)
  jne    L7
  jmp    L138
L16:
  xor    %edi,%edi
  call   <malloc@plt>
  mov    %rbp,%rsi
  movb   $0x0,0x20(%rsp)
  mov    %rax,%rdi
  mov    0x18(%rsp),%rax
  mov    %rdi,(%rax)
  call   <strcpy@plt>
  jmp    L7
L81:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int getUserCommand(char **cmd, char **args) {
  char c = '\0';
  int i = 0;
  char buffer[512];
  do {
    if (i > 512)
      break;
    c = getchar();
    buffer[i] = c;
    i++;
  } while ((c != EOF) && (c != '\n'));
  int lineLen = (i - 1);
  buffer[lineLen] = '\0';
  i = 0;
  while (i < lineLen) {
    if ((buffer[i] == ' ') || (buffer[i] == '\n'))
      break;
    i++;
  }
  int cmdLen = i;
  *cmd = malloc(cmdLen);
  buffer[cmdLen] = '\0';
  strcpy(*cmd, buffer);
  if (cmdLen == lineLen)
    return 1;
  i++;
  int j = 0;
  int stringStart = (cmdLen + 1);
  while (i <= lineLen) {
    if ((buffer[i] == ' ') || (buffer[i] == '\n') || (buffer[i] == '\0')) {
      args[j] = malloc(((i - stringStart) + 1));
      buffer[i] = '\0';
      strcpy(args[j], &buffer[stringStart]);
      j++;
      stringStart = i + 1;
    }
    i++;
  }
  if ((*cmd == NULL) && (*args == NULL))
    return 0;
  else
    return 1;
}
```