Function ink_bvsprintf

src/tscore/ink_sprintf.cc:65–158

}

int
ink_bvsprintf(char *buffer, const char *format, va_list ap)
{
  int         d_val;
  const char *s;
  char       *d, *p, *s_val, d_buffer[32];
  va_list     ap_local;

  va_copy(ap_local, ap);

  s = format;
  d = buffer;

  while (*s) {
    /////////////////////////////
    // handle non-% characters //
    /////////////////////////////

    if (buffer) { // if have output buffer
      while (*s && (*s != '%')) {
        *d++ = *s++;
      } //   really copy, else
    } else {
      while (*s && (*s != '%')) {
        d++;
        s++;
      } //   pass over string
    }

    ///////////////////////////
    // handle NUL characters //
    ///////////////////////////

    if (*s == NUL) {
      break; // end of string
    }

    /////////////////////////
    // handle % characters //
    /////////////////////////

    ++s; // consume % character

    switch (*s) // dispatch on flag
    {
    case 's':                           // %s pattern
      ++s;                              // consume 's'
      s_val = va_arg(ap_local, char *); // grab string argument
      p     = s_val;                    // temporary pointer
      if (buffer) {                     // if have output buffer
        while (*p) {
          *d++ = *p++;
        } //   copy value
      } else { // else
        while (*p) {
          d++;
          p++;
        } //   pass over value