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

```asm
<main>:
  endbr64
  push   %r15
  lea    0x8(%rsi),%rax
  mov    $0x1,%ecx
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %edi,%edi
  cmovne %rax,%rsi
  xor    %ebx,%ebx
  xor    %ebp,%ebp
  mov    (%rsi),%rax
  test   %rax,%rax
  je     L291
  nopl   0x0(%rax)
L81:
  cmpb   $0x2d,(%rax)
  jne    L188
  lea    0x1(%rax),%rdx
  movzbl 0x1(%rax),%eax
  test   %al,%al
  jne    L285
  jmp    L19
  nopl   0x0(%rax,%rax,1)
L267:
  cmp    $0x65,%al
  cmove  %ecx,%ebx
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  test   %al,%al
  je     L19
L285:
  cmp    $0x6e,%al
  jne    L267
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  mov    $0x1,%ebp
  test   %al,%al
  jne    L285
L19:
  mov    0x8(%rsi),%rax
  add    $0x8,%rsi
  test   %rax,%rax
  jne    L81
L148:
  test   %ebp,%ebp
  je     L291
L191:
  add    $0x8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L188:
  mov    (%rsi),%r15
  lea    0x8(%rsi),%r14
  test   %r15,%r15
  je     L148
  lea    D7(%rip),%r13
L36:
  movsbl (%r15),%edi
  mov    %ebx,%r12d
  lea    0x1(%r15),%rcx
  and    $0x1,%r12d
  test   %dil,%dil
  je     L160
  nopl   0x0(%rax,%rax,1)
L180:
  cmp    $0x5c,%dil
  jne    L123
  test   %r12b,%r12b
  je     L123
  movzbl 0x1(%r15),%eax
  lea    0x2(%r15),%rdx
  sub    $0x30,%eax
  cmp    $0x46,%al
  ja     L177
  movzbl %al,%eax
  movslq 0x0(%r13,%rax,4),%rax
  add    %r13,%rax
  notrack jmp *%rax
  nopl   0x0(%rax)
L177:
  mov    %rcx,%r15
  mov    $0x5c,%edi
  nopl   0x0(%rax,%rax,1)
L73:
  call   <putchar@plt>
  movsbl (%r15),%edi
  lea    0x1(%r15),%rcx
  test   %dil,%dil
  jne    L180
L160:
  cmpq   $0x0,(%r14)
  je     L148
  mov    $0x20,%edi
  add    $0x8,%r14
  call   <putchar@plt>
  mov    -0x8(%r14),%r15
  test   %r15,%r15
  jne    L36
  jmp    L148
  nopl   0x0(%rax)
  mov    %rdx,%r15
  mov    $0x1b,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0xb,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0x8,%edi
  jmp    L73
  lea    0x5(%r15),%rsi
  xor    %edi,%edi
L100:
  movsbl (%rdx),%eax
  mov    %rdx,%r15
  lea    0x1(%rdx),%rdx
  mov    %eax,%ecx
  sub    $0x30,%eax
  cmp    $0x7,%eax
  ja     L95
  lea    -0x30(%rcx,%rdi,8),%edi
  cmp    %rdx,%rsi
  jne    L100
  movsbl %dil,%edi
  mov    %rsi,%r15
  jmp    L73
  mov    %rdx,%r15
  mov    $0x9,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0xd,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0xa,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0xc,%edi
  jmp    L73
  nopl   0x0(%rax)
L123:
  mov    %rcx,%r15
  jmp    L73
  mov    %rdx,%r15
  mov    $0x5c,%edi
  jmp    L73
  mov    %rdx,%r15
  mov    $0x7,%edi
  jmp    L73
L95:
  movsbl %dil,%edi
  jmp    L73
L291:
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L191
```

assistant: ```c
int main(int argc, char **argv) {
  char **ap;
  char *p;
  char c;
  int count;
  int nflag = 0;
  int eflag = 0;
  ap = argv;
  if (argc)
    ap++;
  while ((p = *ap) != ((void *)0) && *p == '-') {
    while (*++p) {
      if (*p == 'n')
        nflag = 1;
      if (*p == 'e')
        eflag = 1;
    }
    ap++;
  }
  while ((p = *ap++) != ((void *)0)) {
    while ((c = *p++) != '\0') {
      if (c == '\\' && eflag) {
        switch (*p++) {
        case 'a':
          c = '\a';
          break;
        case 'b':
          c = '\b';
          break;
        case 'c':
          return 0;
        case 'e':
          c = 033;
          break;
        case 'f':
          c = '\f';
          break;
        case 'n':
          c = '\n';
          break;
        case 'r':
          c = '\r';
          break;
        case 't':
          c = '\t';
          break;
        case 'v':
          c = '\v';
          break;
        case '\\':
          break;
        case '0':
          c = 0;
          count = 3;
          while (--count >= 0 && (unsigned)(*p - '0') < 8)
            c = (c << 3) + (*p++ - '0');
          break;
        default:
          p--;
          break;
        }
      }
      putchar(c);
    }
    if (*ap)
      putchar(' ');
  }
  if (!nflag)
    putchar('\n');
  return 0;
}
```