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     L189
  nopl   0x0(%rax)
L262:
  cmpb   $0x2d,(%rax)
  jne    L338
  lea    0x1(%rax),%rdx
  movzbl 0x1(%rax),%eax
  test   %al,%al
  jne    L164
  jmp    L60
  nopl   0x0(%rax,%rax,1)
L264:
  cmp    $0x65,%al
  cmove  %ecx,%ebx
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  test   %al,%al
  je     L60
L164:
  cmp    $0x6e,%al
  jne    L264
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  mov    $0x1,%ebp
  test   %al,%al
  jne    L164
L60:
  mov    0x8(%rsi),%rax
  add    $0x8,%rsi
  test   %rax,%rax
  jne    L262
L180:
  test   %ebp,%ebp
  je     L189
L88:
  add    $0x8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L338:
  mov    (%rsi),%r15
  lea    0x8(%rsi),%r14
  test   %r15,%r15
  je     L180
  lea    D3(%rip),%r13
L345:
  movsbl (%r15),%edi
  mov    %ebx,%r12d
  lea    0x1(%r15),%rdx
  and    $0x1,%r12d
  test   %dil,%dil
  je     L83
  nopl   0x0(%rax,%rax,1)
L43:
  cmp    $0x5c,%dil
  jne    L297
  test   %r12b,%r12b
  je     L297
  movzbl 0x1(%r15),%eax
  lea    0x2(%r15),%rcx
  sub    $0x30,%eax
  cmp    $0x46,%al
  ja     L226
  movzbl %al,%eax
  movslq 0x0(%r13,%rax,4),%rax
  add    %r13,%rax
  notrack jmp *%rax
  nopl   0x0(%rax)
L226:
  mov    %rdx,%r15
  mov    $0x5c,%edi
  nopl   0x0(%rax,%rax,1)
L358:
  call   <putchar@plt>
  movsbl (%r15),%edi
  lea    0x1(%r15),%rdx
  test   %dil,%dil
  jne    L43
L83:
  cmpq   $0x0,(%r14)
  je     L180
  mov    $0x20,%edi
  add    $0x8,%r14
  call   <putchar@plt>
  mov    -0x8(%r14),%r15
  test   %r15,%r15
  jne    L345
  jmp    L180
  nopl   0x0(%rax)
  mov    %rcx,%r15
  mov    $0x1b,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0xb,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0x8,%edi
  jmp    L358
  movsbl 0x2(%r15),%edx
  mov    %edx,%eax
  sub    $0x30,%edx
  cmp    $0x7,%edx
  ja     L27
  lea    -0x30(%rax),%edi
  movsbl 0x3(%r15),%eax
  mov    %eax,%edx
  sub    $0x30,%eax
  cmp    $0x7,%eax
  ja     L279
  movsbl 0x4(%r15),%eax
  lea    -0x30(%rdx,%rdi,8),%edi
  mov    %eax,%edx
  sub    $0x30,%eax
  cmp    $0x7,%eax
  ja     L116
  lea    -0x30(%rdx,%rdi,8),%edi
  add    $0x5,%r15
  movsbl %dil,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0x9,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0xd,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0xa,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0xc,%edi
  jmp    L358
  nopl   0x0(%rax,%rax,1)
L297:
  mov    %rdx,%r15
  jmp    L358
  mov    %rcx,%r15
  mov    $0x5c,%edi
  jmp    L358
  mov    %rcx,%r15
  mov    $0x7,%edi
  jmp    L358
L189:
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L88
L279:
  add    $0x3,%r15
  movsbl %dil,%edi
  jmp    L358
L27:
  mov    %rcx,%r15
  xor    %edi,%edi
  jmp    L358
L116:
  add    $0x4,%r15
  movsbl %dil,%edi
  jmp    L358
```

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;
}
```