user: 请将以下的汇编代码转换成C语言代码：

```asm
<decodeString>:
  endbr64
  push   %r15
  push   %r14
  mov    %rdi,%r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  movzbl (%rsi),%eax
  test   %al,%al
  je     L152
  mov    %edx,%r15d
  lea    -0x1(%rdx),%r12d
  test   %edx,%edx
  je     L152
  mov    %rsi,%rbx
  lea    0x1(%rsi),%r13
  lea    D11(%rip),%rbp
  jmp    L231
  nopw   0x0(%rax,%rax,1)
L44:
  mov    %al,(%r14)
  mov    %r12d,%r15d
  mov    %r13,%rbx
  add    $0x1,%r14
L276:
  movzbl (%rbx),%eax
  lea    0x1(%rbx),%r13
  test   %al,%al
  je     L152
L113:
  lea    -0x1(%r15),%r12d
  test   %r15d,%r15d
  je     L152
L231:
  cmp    $0x25,%al
  jne    L44
  mov    $0x2,%edx
  mov    %rbp,%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  cmp    $0x1,%r12d
  jbe    L234
  test   %rax,%rax
  jne    L234
  add    $0x3,%rbx
  movb   $0x20,(%r14)
  sub    $0x3,%r15d
  add    $0x1,%r14
  movzbl (%rbx),%eax
  lea    0x1(%rbx),%r13
  test   %al,%al
  jne    L113
L152:
  movb   $0x0,(%r14)
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L234:
  mov    $0x5,%edx
  lea    D48(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  cmp    $0x4,%r12d
  seta   0xf(%rsp)
  movzbl 0xf(%rsp),%ecx
  test   %rax,%rax
  jne    L253
  test   %cl,%cl
  je     L253
  mov    $0x6541,%r9d
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %r9w,-0x2(%r14)
  jmp    L276
  nopw   0x0(%rax,%rax,1)
L253:
  mov    $0x5,%edx
  lea    D41(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L63
  cmpb   $0x0,0xf(%rsp)
  je     L63
  mov    $0x6555,%r8d
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %r8w,-0x2(%r14)
  jmp    L276
  nopl   0x0(%rax)
L63:
  mov    $0x5,%edx
  lea    D68(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L287
  cmpb   $0x0,0xf(%rsp)
  je     L287
  mov    $0x654f,%edi
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %di,-0x2(%r14)
  jmp    L276
  nopl   0x0(%rax,%rax,1)
L287:
  mov    $0x5,%edx
  lea    D72(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L219
  cmpb   $0x0,0xf(%rsp)
  je     L219
  mov    $0x6561,%esi
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %si,-0x2(%r14)
  jmp    L276
  nopl   0x0(%rax,%rax,1)
L219:
  mov    $0x5,%edx
  lea    D43(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L296
  cmpb   $0x0,0xf(%rsp)
  je     L296
  mov    $0x6575,%ecx
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %cx,-0x2(%r14)
  jmp    L276
  nopl   0x0(%rax,%rax,1)
L296:
  mov    $0x5,%edx
  lea    D13(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L244
  cmpb   $0x0,0xf(%rsp)
  je     L244
  mov    $0x656f,%edx
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %dx,-0x2(%r14)
  jmp    L276
L244:
  mov    $0x5,%edx
  lea    D26(%rip),%rsi
  mov    %r13,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L182
  cmpb   $0x0,0xf(%rsp)
  jne    L41
L182:
  mov    %r12d,%r15d
  mov    %r13,%rbx
  jmp    L276
L41:
  mov    $0x7373,%eax
  sub    $0x6,%r15d
  add    $0x6,%rbx
  add    $0x2,%r14
  mov    %ax,-0x2(%r14)
  jmp    L276
```

tool_calls: name: retrieve_data
arguments: tag: D11
datatype: string
name: retrieve_data
arguments: tag: D48
datatype: string
name: retrieve_data
arguments: tag: D41
datatype: string
name: retrieve_data
arguments: tag: D68
datatype: string
name: retrieve_data
arguments: tag: D72
datatype: string
name: retrieve_data
arguments: tag: D43
datatype: string
name: retrieve_data
arguments: tag: D13
datatype: string
name: retrieve_data
arguments: tag: D26
datatype: string

tool: D11: 20

tool: D48: C3%84;

tool: D41: C3%9C;

tool: D68: C3%96;

tool: D72: C3%A4;

tool: D43: C3%BC;

tool: D13: C3%B6;

tool: D26: C3%9F;

assistant: ```c
void decodeString(char *dest, char *src, unsigned int len) {
  char c;
  while ((c = *src++) && len--) {
    if (c == '%') {
      if (strncmp(src, "20", 2) == 0 && len >= 2) {
        *dest++ = ' ';
        len -= 2;
        src += 2;
      } else if (strncmp(src, "C3%84;", 5) == 0 && len >= 5) {
        *dest++ = 'A';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%9C;", 5) == 0 && len >= 5) {
        *dest++ = 'U';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%96;", 5) == 0 && len >= 5) {
        *dest++ = 'O';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%A4;", 5) == 0 && len >= 5) {
        *dest++ = 'a';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%BC;", 5) == 0 && len >= 5) {
        *dest++ = 'u';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%B6;", 5) == 0 && len >= 5) {
        *dest++ = 'o';
        *dest++ = 'e';
        len -= 5;
        src += 5;
      } else if (strncmp(src, "C3%9F;", 5) == 0 && len >= 5) {
        *dest++ = 's';
        *dest++ = 's';
        len -= 5;
        src += 5;
      }
    } else
      *dest++ = c;
  }
  *dest++ = 0;
}
```