user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<libewf_convert_date_header_value>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %esi,-0x2c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x20(%rbp)
  movl   $0x0,-0x1c(%rbp)
  cmpq   $0x0,-0x28(%rbp)
  jne    L198
  mov    $0x0,%eax
  jmp    L38
L198:
  lea    -0x20(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    $0x20,%esi
  mov    %rax,%rdi
  call   <libewf_split_string@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x20(%rbp),%eax
  cmp    $0x6,%eax
  je     L160
  mov    $0x0,%eax
  jmp    L38
L160:
  mov    $0x14,%edi
  call   <libewf_header_value_string_alloc@plt>
  mov    %rax,-0x10(%rbp)
  cmpl   $0x2,-0x2c(%rbp)
  jne    L179
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L77
  mov    -0x10(%rbp),%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x1,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L155
L77:
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  movzbl (%rax),%edx
  mov    -0x10(%rbp),%rax
  mov    %dl,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x1,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L155:
  mov    -0x10(%rbp),%rax
  add    $0x2,%rax
  movb   $0x2f,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L214
  mov    -0x10(%rbp),%rax
  add    $0x3,%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x4,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L25
L214:
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x3,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x4,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
  jmp    L25
L179:
  cmpl   $0x1,-0x2c(%rbp)
  jne    L25
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L86
  mov    -0x10(%rbp),%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x1,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L39
L86:
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  movzbl (%rax),%edx
  mov    -0x10(%rbp),%rax
  mov    %dl,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x1,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L39:
  mov    -0x10(%rbp),%rax
  add    $0x2,%rax
  movb   $0x2f,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L107
  mov    -0x10(%rbp),%rax
  add    $0x3,%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x4,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L25
L107:
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x3,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x4,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L25:
  mov    -0x10(%rbp),%rax
  add    $0x5,%rax
  movb   $0x2f,(%rax)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x6,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x7,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x8,%rdx
  movzbl 0x2(%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x9,%rdx
  movzbl 0x3(%rax),%eax
  mov    %al,(%rdx)
  mov    -0x10(%rbp),%rax
  add    $0xa,%rax
  movb   $0x20,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L165
  mov    -0x10(%rbp),%rax
  add    $0xb,%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xc,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L181
L165:
  mov    -0x18(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xb,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xc,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L181:
  mov    -0x10(%rbp),%rax
  add    $0xd,%rax
  movb   $0x3a,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L17
  mov    -0x10(%rbp),%rax
  add    $0xe,%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xf,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L132
L17:
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xe,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0xf,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L132:
  mov    -0x10(%rbp),%rax
  add    $0x10,%rax
  movb   $0x3a,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x28,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x1,%eax
  jne    L216
  mov    -0x10(%rbp),%rax
  add    $0x11,%rax
  movb   $0x30,(%rax)
  mov    -0x18(%rbp),%rax
  add    $0x28,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x12,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L152
L216:
  mov    -0x18(%rbp),%rax
  add    $0x28,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x11,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x18(%rbp),%rax
  add    $0x28,%rax
  mov    (%rax),%rax
  mov    -0x10(%rbp),%rdx
  add    $0x12,%rdx
  movzbl 0x1(%rax),%eax
  mov    %al,(%rdx)
L152:
  mov    -0x10(%rbp),%rax
  add    $0x13,%rax
  movb   $0x0,(%rax)
  jmp    L203
L239:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <free@plt>
  addl   $0x1,-0x1c(%rbp)
L203:
  mov    -0x20(%rbp),%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L239
  mov    -0x10(%rbp),%rax
L38:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L83
  call   <__stack_chk_fail@plt>
L83:
  leave
  ret
```

assistant: ```c
char *libewf_convert_date_header_value(char *header_value, uint8_t date_format) {
  char **date_elements;
  char *date_string;
  uint32_t date_element_count = 0;
  uint32_t date_element_iterator = 0;
  if (header_value == NULL) {
    return (NULL);
  }
  date_elements = libewf_split_string(header_value, ' ', &date_element_count);
  if (date_element_count != 6) {
    return (NULL);
  }
  date_string = libewf_header_value_string_alloc(20);
  if (date_format == 0x02) {
    if (strlen(date_elements[1]) == 1) {
      date_string[0] = '0';
      date_string[1] = date_elements[1][0];
    } else {
      date_string[0] = date_elements[1][0];
      date_string[1] = date_elements[1][1];
    }
    date_string[2] = '/';
    if (strlen(date_elements[2]) == 1) {
      date_string[3] = '0';
      date_string[4] = date_elements[2][0];
    } else {
      date_string[3] = date_elements[2][0];
      date_string[4] = date_elements[2][1];
    }
  } else if (date_format == 0x01) {
    if (strlen(date_elements[2]) == 1) {
      date_string[0] = '0';
      date_string[1] = date_elements[2][0];
    } else {
      date_string[0] = date_elements[2][0];
      date_string[1] = date_elements[2][1];
    }
    date_string[2] = '/';
    if (strlen(date_elements[1]) == 1) {
      date_string[3] = '0';
      date_string[4] = date_elements[1][0];
    } else {
      date_string[3] = date_elements[1][0];
      date_string[4] = date_elements[1][1];
    }
  }
  date_string[5] = '/';
  date_string[6] = date_elements[0][0];
  date_string[7] = date_elements[0][1];
  date_string[8] = date_elements[0][2];
  date_string[9] = date_elements[0][3];
  date_string[10] = ' ';
  if (strlen(date_elements[3]) == 1) {
    date_string[11] = '0';
    date_string[12] = date_elements[3][0];
  } else {
    date_string[11] = date_elements[3][0];
    date_string[12] = date_elements[3][1];
  }
  date_string[13] = ':';
  if (strlen(date_elements[4]) == 1) {
    date_string[14] = '0';
    date_string[15] = date_elements[4][0];
  } else {
    date_string[14] = date_elements[4][0];
    date_string[15] = date_elements[4][1];
  }
  date_string[16] = ':';
  if (strlen(date_elements[5]) == 1) {
    date_string[17] = '0';
    date_string[18] = date_elements[5][0];
  } else {
    date_string[17] = date_elements[5][0];
    date_string[18] = date_elements[5][1];
  }
  date_string[19] = '\0';
  while (date_element_iterator < date_element_count) {
    free(date_elements[date_element_iterator]);
    date_element_iterator++;
  }
  return (date_string);
}
```