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

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    %edi,%ebx
  mov    %rsi,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    D50(%rip),%rdx
  call   <has_arg@plt>
  test   %rax,%rax
  jne    L22
  lea    D36(%rip),%rdx
  mov    %rbp,%rsi
  mov    %ebx,%edi
  call   <has_arg@plt>
  test   %rax,%rax
  je     L30
L22:
  lea    D16(%rip),%rdi
  call   <puts@plt>
  lea    D22(%rip),%rdi
  call   <puts@plt>
  lea    D10(%rip),%rdi
  call   <puts@plt>
  lea    D30(%rip),%rdi
  call   <puts@plt>
  lea    D47(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%eax
L125:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L54
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L30:
  mov    %rbp,%rsi
  mov    %ebx,%edi
  call   <bu_handle_version@plt>
  test   %rax,%rax
  jne    L44
  cmp    $0x3,%ebx
  jg     L131
  je     L142
  cmp    $0x2,%ebx
  jne    L101
  mov    0x8(%rbp),%rdi
  mov    $0xa,%edx
  mov    $0x0,%esi
  call   <strtol@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  je     L101
L59:
  mov    %ebx,%edi
  call   <print_year@plt>
  mov    $0x0,%eax
  jmp    L125
L131:
  mov    0x0(%rbp),%rdi
  call   <bu_extra_argument@plt>
  mov    $0x1,%eax
  jmp    L125
L142:
  mov    0x10(%rbp),%rdi
  mov    $0xa,%edx
  mov    $0x0,%esi
  call   <strtol@plt>
  mov    %rax,%r12
  mov    %eax,%ebx
  mov    0x8(%rbp),%rdi
  mov    $0xa,%edx
  mov    $0x0,%esi
  call   <strtol@plt>
  mov    %eax,%esi
  or     %r12d,%eax
  je     L101
L127:
  test   %esi,%esi
  je     L59
  mov    %ebx,%edi
  call   <print_month@plt>
  mov    $0x0,%eax
  jmp    L125
L101:
  mov    $0x0,%edi
  call   <time@plt>
  mov    %eax,0x4(%rsp)
  lea    0x4(%rsp),%rdi
  call   <localtime@plt>
  mov    (%rax),%ecx
  lea    0x1(%rcx),%esi
  mov    0x4(%rax),%ebx
  add    $0x76c,%ebx
  jmp    L127
L44:
  mov    $0x0,%eax
  jmp    L125
L54:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D50
type_guessed: string
name: read_data
arguments: data_tag: D36
type_guessed: string
name: read_data
arguments: data_tag: D16
type_guessed: string
name: read_data
arguments: data_tag: D22
type_guessed: string
name: read_data
arguments: data_tag: D10
type_guessed: string
name: read_data
arguments: data_tag: D30
type_guessed: string
name: read_data
arguments: data_tag: D47
type_guessed: string

tool: D50: -h

tool: D36: --help

tool: D16: Usage: cal [[MONTH] YEAR]

tool: D22: Prints a calendar for the specified timeframe.


tool: D10: If MONTH and YEAR are provided, prints the calendar for the specified month.

tool: D30: If only YEAR is provided, prints the calendar for all of YEAR.

tool: D47: Otherwise, prints the calendar for the current month and year.

assistant: ```c
int main(int argc, char **argv) {
  if (has_arg(argc, argv, "-h") || has_arg(argc, argv, "--help")) {
    puts("Usage: cal [[MONTH] YEAR]");
    puts("Prints a calendar for the specified timeframe.\n");
    puts("If MONTH and YEAR are provided, prints the calendar for the specified month.");
    puts("If only YEAR is provided, prints the calendar for all of YEAR.");
    puts("Otherwise, prints the calendar for the current month and year.");
    return 1;
  }
  if (bu_handle_version(argc, argv)) {
    return 0;
  }
  if (argc > 3) {
    bu_extra_argument(argv[0]);
    return 1;
  }
  int year = 0;
  int month = 0;
  if (argc == 3) {
    year = (int)strtol(argv[2], (char **)NULL, 10);
    month = (int)strtol(argv[1], (char **)NULL, 10);
  }
  if (argc == 2) {
    year = (int)strtol(argv[1], (char **)NULL, 10);
  }
  if (year == 0 && month == 0) {
    time_t current_time = time(NULL);
    struct tm *ltime = localtime(&current_time);
    month = ltime->tm_mon + 1;
    year = ltime->tm_year + 1900;
  }
  if (month) {
    print_month(year, month);
  } else {
    print_year(year);
  }
  return 0;
}
```