user: 请将以下的汇编代码转换成C语言代码：

```asm
<getstring>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x228,%rsp
  mov    %rsi,%r15
  mov    %fs:0x28,%rax
  mov    %rax,0x218(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%rbx
  jmp    L253
L194:
  add    $0x1,%rdi
L253:
  movzbl (%rdi),%eax
  test   %al,%al
  je     L145
  cmp    $0x28,%al
  jne    L194
L145:
  test   %al,%al
  jne    L188
  mov    %r15,%rdx
  mov    $0x200,%esi
  mov    %rbx,%rdi
  call   <myfgets@plt>
  test   %rax,%rax
  je     L203
  lea    0x10(%rsp),%rdi
  jmp    L253
L203:
  lea    D1(%rip),%rdi
  call   <strdup@plt>
  mov    %rax,%r14
L143:
  mov    0x218(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L158
  mov    %r14,%rax
  add    $0x228,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L188:
  lea    0x1(%rdi),%r13
  movl   $0x1,0x4(%rsp)
  mov    $0x0,%r12d
  mov    $0x0,%r14d
  lea    0x10(%rsp),%rax
  mov    %rax,0x8(%rsp)
  jmp    L123
L129:
  movzbl 0x1(%rbp),%eax
  sub    $0x28,%eax
  cmp    $0x2,%al
  mov    %rbp,%rbx
  adc    $0x0,%rbx
L161:
  lea    0x1(%rbx),%rbp
  movzbl 0x1(%rbx),%eax
  test   %al,%al
  je     L173
  test   %r12d,%r12d
  jg     L254
  cmp    $0x29,%al
  je     L0
L254:
  cmp    $0x5c,%al
  je     L129
  cmp    $0x28,%al
  je     L246
  mov    %rbp,%rbx
  cmp    $0x29,%al
  jne    L161
  sub    $0x1,%r12d
  jmp    L161
L246:
  add    $0x1,%r12d
  mov    %rbp,%rbx
  jmp    L161
L166:
  mov    %rbp,%rdi
  sub    %r13,%rdi
  add    $0x1,%edi
  call   <malloc@plt>
  mov    %rax,%r14
  jmp    L120
L0:
  cmp    %rbp,%r13
  jb     L264
  jmp    L143
L173:
  cmp    %rbp,%r13
  jae    L157
L264:
  test   %r14,%r14
  je     L166
  mov    0x4(%rsp),%eax
  lea    (%rax,%rbp,1),%esi
  sub    %r13d,%esi
  mov    %r14,%rdi
  call   <realloc@plt>
  mov    %rax,%r14
L120:
  sub    %r13,%rbp
  movslq 0x4(%rsp),%rax
  lea    -0x1(%r14,%rax,1),%rdi
  mov    %ebp,%edx
  mov    %r13,%rsi
  call   <strncpy@plt>
  add    0x4(%rsp),%ebp
  mov    %ebp,0x4(%rsp)
  movslq %ebp,%rbp
  movb   $0x0,-0x1(%r14,%rbp,1)
  cmpb   $0x0,0x1(%rbx)
  jne    L143
L157:
  mov    %r15,%rdx
  mov    $0x200,%esi
  mov    0x8(%rsp),%r13
  mov    %r13,%rdi
  call   <myfgets@plt>
  test   %rax,%rax
  je     L143
L123:
  movzbl 0x0(%r13),%eax
  test   %al,%al
  je     L157
  test   %r12d,%r12d
  jg     L23
  cmp    $0x29,%al
  je     L143
L23:
  mov    %r13,%rbp
  jmp    L254
L158:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: label: D1
data_type: string

tool: 

assistant: ```c
char *getstring(char *start, FILE *in) {
  char *end, *ret;
  int parencnt = 0, len = 0;
  char buffer[512];
  for (;;) {
    while (*start != '\0' && *start != '(')
      ++start;
    if (*start == '\0') {
      if (myfgets(buffer, sizeof(buffer), in) == NULL)
        return (strdup(""));
      start = buffer;
    } else
      break;
  }
  ++start;
  ret = NULL;
  len = 1;
  for (;;) {
    for (end = start; *end != '\0' && (*end != ')' || parencnt > 0); ++end) {
      if (*end == '\\' && (end[1] == '(' || end[1] == ')'))
        ++end;
      else if (*end == '(')
        ++parencnt;
      else if (*end == ')')
        --parencnt;
    }
    if (end > start) {
      if (ret == NULL)
        ret = malloc(end - start + 1);
      else
        ret = realloc(ret, len + end - start);
      strncpy(ret + len - 1, start, end - start);
      len += end - start;
      ret[len - 1] = '\0';
    }
    if (*end != '\0')
      break;
    if (myfgets(buffer, sizeof(buffer), in) == NULL)
      return (ret);
    start = buffer;
  }
  return (ret);
}
```