user: Please show me the C implementation that matches the assembly code listed below:

```asm
<read_command>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x820,%rsp
  mov    %rdi,-0x808(%rbp)
  mov    %rsi,-0x810(%rbp)
  mov    %rdx,-0x818(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x7f4(%rbp)
  movl   $0x0,-0x7f0(%rbp)
  movl   $0x0,-0x7ec(%rbp)
  mov    -0x818(%rbp),%rdx
  lea    -0x7e0(%rbp),%rax
  mov    $0x3e8,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  mov    %rax,-0x7e8(%rbp)
  cmpq   $0x0,-0x7e8(%rbp)
  jne    L132
  mov    $0xffffffff,%eax
  jmp    L125
L132:
  mov    -0x808(%rbp),%rdx
  lea    -0x7e0(%rbp),%rax
  lea    D3(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  movl   $0x0,-0x7f8(%rbp)
  jmp    L49
L102:
  addl   $0x1,-0x7f8(%rbp)
L49:
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x20,%al
  je     L102
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x9,%al
  je     L102
  jmp    L141
L152:
  mov    -0x7f8(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x7f8(%rbp)
  mov    -0x7f0(%rbp),%edx
  lea    0x1(%rdx),%ecx
  mov    %ecx,-0x7f0(%rbp)
  movslq %edx,%rcx
  mov    -0x808(%rbp),%rdx
  add    %rcx,%rdx
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  mov    %al,(%rdx)
L141:
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  test   %al,%al
  je     L62
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0xa,%al
  je     L62
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x20,%al
  je     L62
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x9,%al
  jne    L152
L62:
  mov    -0x7f0(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x808(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  jmp    L21
L188:
  movl   $0x0,-0x7f0(%rbp)
  jmp    L128
L124:
  addl   $0x1,-0x7f8(%rbp)
L128:
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x20,%al
  je     L124
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x9,%al
  je     L124
  jmp    L178
L159:
  mov    -0x7f8(%rbp),%edx
  lea    0x1(%rdx),%eax
  mov    %eax,-0x7f8(%rbp)
  mov    -0x7f0(%rbp),%eax
  lea    0x1(%rax),%ecx
  mov    %ecx,-0x7f0(%rbp)
  movslq %edx,%rdx
  movzbl -0x7e0(%rbp,%rdx,1),%edx
  cltq
  mov    %dl,-0x3f0(%rbp,%rax,1)
L178:
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x20,%al
  je     L16
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0x9,%al
  je     L16
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  test   %al,%al
  je     L16
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0xa,%al
  jne    L159
L16:
  mov    -0x7f0(%rbp),%eax
  cltq
  movb   $0x0,-0x3f0(%rbp,%rax,1)
  lea    -0x3f0(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L21
  mov    $0x3e8,%edi
  call   <malloc@plt>
  mov    -0x7f4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x810(%rbp),%rdx
  add    %rcx,%rdx
  mov    %rax,(%rdx)
  mov    -0x7f4(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x7f4(%rbp)
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x810(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  lea    -0x3f0(%rbp),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  addl   $0x1,-0x7ec(%rbp)
L21:
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  test   %al,%al
  je     L157
  mov    -0x7f8(%rbp),%eax
  cltq
  movzbl -0x7e0(%rbp,%rax,1),%eax
  cmp    $0xa,%al
  jne    L188
L157:
  mov    -0x7ec(%rbp),%eax
L125:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L212
  call   <__stack_chk_fail@plt>
L212:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D3
type_infered: string

tool: D3: %s

assistant: ```c
int read_command(char *command, char *args[], FILE *stream) {
  char cmdline[1000];
  int i, j = 0, k = 0;
  char *ret;
  int cnt = 0;
  char temp[1000];
  ret = fgets(cmdline, 1000, stream);
  if (ret == 0)
    return -1;
  sscanf(cmdline, "%s", command);
  i = 0;
  while (cmdline[i] == ' ' || cmdline[i] == '\t')
    i++;
  while (cmdline[i] != '\0' && cmdline[i] != '\n' && cmdline[i] != ' ' && cmdline[i] != '\t')
    command[k++] = cmdline[i++];
  command[k] = '\0';
  while (cmdline[i] != '\0' && cmdline[i] != '\n') {
    k = 0;
    while (cmdline[i] == ' ' || cmdline[i] == '\t')
      i++;
    while (cmdline[i] != ' ' && cmdline[i] != '\t' && cmdline[i] != '\0' && cmdline[i] != '\n')
      temp[k++] = cmdline[i++];
    temp[k] = '\0';
    if (strlen(temp)) {
      args[j] = (char *)malloc(sizeof(temp));
      strcpy(args[j++], temp);
      cnt++;
    }
  }
  return cnt;
}
```