static size_t parse_pchar()

in src/core/lib/uri/uri_parser.cc [82:121]

• 35 lines of code
• 26 McCabe index (conditional complexity)

static size_t parse_pchar(const char* uri_text, size_t i) {
  /* pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
   * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
   * pct-encoded = "%" HEXDIG HEXDIG
   * sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
   / "*" / "+" / "," / ";" / "=" */
  char c = uri_text[i];
  switch (c) {
    default:
      if (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')) ||
          ((c >= '0') && (c <= '9'))) {
        return 1;
      }
      break;
    case ':':
    case '@':
    case '-':
    case '.':
    case '_':
    case '~':
    case '!':
    case '$':
    case '&':
    case '\'':
    case '(':
    case ')':
    case '*':
    case '+':
    case ',':
    case ';':
    case '=':
      return 1;
    case '%': /* pct-encoded */
      if (valid_hex(uri_text[i + 1]) && valid_hex(uri_text[i + 2])) {
        return 2;
      }
      return NOT_SET;
  }
  return 0;
}