user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<base64_html_encode>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdx
  call   <base64_encode@plt>
  mov    %eax,%r15d
  test   %eax,%eax
  js     L19
  mov    (%rsp),%r9
  je     L103
  lea    -0x1(%r15),%edx
  mov    %r9,%rax
  mov    %r15d,%ebx
  xor    %esi,%esi
  lea    0x1(%r9,%rdx,1),%rdi
  nopl   0x0(%rax,%rax,1)
L38:
  movzbl (%rax),%edx
  mov    %edx,%ecx
  and    $0xfffffffb,%ecx
  cmp    $0x2b,%cl
  je     L106
  cmp    $0x3d,%dl
  jne    L158
L106:
  add    $0x1,%esi
L158:
  add    $0x1,%rax
  cmp    %rax,%rdi
  jne    L38
  test   %esi,%esi
  je     L103
  lea    (%r15,%rsi,2),%r15d
  lea    0x1(%r15),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L167
  mov    %rax,%r14
  xor    %r13d,%r13d
  jmp    L85
  nop
L187:
  cmp    $0x2f,%al
  je     L76
  cmp    $0x3d,%al
  je     L143
  mov    %al,(%r14)
  add    $0x1,%r14
L173:
  add    $0x1,%r13
  cmp    %r13,%rbx
  je     L96
L85:
  mov    (%rsp),%rax
  movzbl (%rax,%r13,1),%eax
  cmp    $0x2b,%al
  jne    L187
  mov    %r14,%rdi
  mov    $0x3,%edx
  add    $0x1,%r13
  add    $0x3,%r14
  lea    D27(%rip),%rsi
  call   <memcpy@plt>
  cmp    %r13,%rbx
  jne    L85
L96:
  movb   $0x0,(%r14)
  mov    (%rsp),%rdi
  mov    %r12,0x0(%rbp)
  call   <free@plt>
  jmp    L101
  nopl   0x0(%rax)
L103:
  mov    %r9,0x0(%rbp)
L101:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L176
  add    $0x18,%rsp
  mov    %r15d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L76:
  mov    %r14,%rdi
  mov    $0x3,%edx
  lea    D18(%rip),%rsi
  add    $0x3,%r14
  call   <memcpy@plt>
  jmp    L173
  nopl   (%rax)
L143:
  mov    %r14,%rdi
  mov    $0x3,%edx
  lea    D4(%rip),%rsi
  add    $0x3,%r14
  call   <memcpy@plt>
  jmp    L173
  nopl   (%rax)
L19:
  movq   $0x0,0x0(%rbp)
  jmp    L101
L167:
  movq   $0x0,0x0(%rbp)
  mov    $0xffffffff,%r15d
  jmp    L101
L176:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D27
data_type: string
name: retrieve_data
arguments: data_label: D18
data_type: string
name: retrieve_data
arguments: data_label: D4
data_type: string

tool: D27: %2B

tool: D18: %2F

tool: D4: %3D

assistant: ```c
int base64_html_encode(const void *data, int size, char **str) {
  int url_chrs;
  int new_len;
  char *b64_str;
  char *new_b64_str;
  char *s;
  int old_len;
  int i;
  old_len = base64_encode(data, size, &b64_str);
  if (old_len < 0) {
    *str = NULL;
    return old_len;
  }
  url_chrs = 0;
  for (i = 0; i < old_len; i++) {
    if ((b64_str[i] == '+') || (b64_str[i] == '/') || (b64_str[i] == '=')) {
      url_chrs++;
    }
  }
  if (url_chrs == 0) {
    *str = b64_str;
    return old_len;
  }
  new_len = old_len + (2 * url_chrs);
  new_b64_str = malloc(new_len + 1);
  if (new_b64_str == NULL) {
    *str = NULL;
    return -1;
  }
  s = new_b64_str;
  for (i = 0; i < old_len; i++) {
    if (b64_str[i] == '+') {
      memcpy(s, "%2B", 3);
      s += 3;
    } else if (b64_str[i] == '/') {
      memcpy(s, "%2F", 3);
      s += 3;
    } else if (b64_str[i] == '=') {
      memcpy(s, "%3D", 3);
      s += 3;
    } else {
      *(s++) = b64_str[i];
    }
  }
  *s = '\0';
  *str = new_b64_str;
  free(b64_str);
  return new_len;
}
```