Function SkipPrefix

tests/gtest/gtest-all.cc:7148–7155

If *pstr starts with the given prefix, modifies *pstr to be right past the prefix and returns true; otherwise leaves *pstr unchanged and returns false. None of pstr, *pstr, and prefix can be NULL.

// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false.  None of pstr, *pstr, and prefix can be NULL.
bool SkipPrefix(const char* prefix, const char** pstr) {
  const size_t prefix_len = strlen(prefix);
  if (strncmp(*pstr, prefix, prefix_len) == 0) {
    *pstr += prefix_len;
    return true;
  }
  return false;
}

// Parses a string as a command line flag.  The string should have
// the format "--flag=value".  When def_optional is true, the "=value"