protected function views_oai_pmh_request::parse_arguments in Views OAI-PMH 7.3

Parse the given arguments, initializing each argument's corresponding member variable if the argument is valid, or appending an error when it is not.

1 call to views_oai_pmh_request::parse_arguments()

views_oai_pmh_request::__construct in includes/request.inc

Constructs the object based on $_REQUEST data.

File

includes/request.inc, line 238

Represents an OAI-PMH request.

Class

views_oai_pmh_request

Class views_oai_pmh_request.

Code

protected function parse_arguments($args, $required = array(), $optional = array()) {
  $possible = array_merge($required, $optional);

  // Preserve original value of every authorized tag.
  foreach ($possible as $arg) {
    if (isset($args[$arg])) {
      $this->original_args[$arg] = $args[$arg];
    }
  }

  // Parse resumption token.
  if (isset($args['resumptionToken']) && in_array('resumptionToken', $possible)) {
    if (count($args) > 1) {
      $this->errors[] = new views_oai_pmh_error_exclusive_argument('resumptionToken');
    }
    else {
      $this->resumption_token = $args['resumptionToken'];
    }

    // No more arguments to check since resumptionToken is exclusive.
    return;
  }

  // Check required arguments.
  foreach ($required as $arg) {
    if (!isset($args[$arg])) {
      $this->errors[] = new views_oai_pmh_error_missing_argument($arg);
    }
  }

  // Check for extraneous arguments.
  foreach (array_keys($args) as $arg) {
    if (!in_array($arg, $possible)) {
      $this->errors[] = new views_oai_pmh_error_bad_argument($arg);

      // Prevent further error reports about the same argument.
      unset($args[$arg]);
    }
  }

  // Check for the 'set' argument (unsupported).
  if (isset($args['set'])) {
    $this->errors[] = new views_oai_pmh_error_no_set_hierarchy();
  }

  // Check date arguments.
  $from_granularity = 0;
  $until_granularity = 0;
  if (isset($args['from'])) {
    if (!($from_granularity = $this
      ->check_date_format($args['from']))) {
      $this->errors[] = new views_oai_pmh_error_bad_value('from', $args['from']);
    }
  }
  if (isset($args['until'])) {
    if (!($until_granularity = $this
      ->check_date_format($args['until']))) {
      $this->errors[] = new views_oai_pmh_error_bad_value('until', $args['until']);
    }
  }
  if ($from_granularity && $until_granularity && $from_granularity != $until_granularity) {
    $this->errors[] = new views_oai_pmh_error_bad_value('until', $args['until']);
  }
  else {
    if ($from_granularity) {
      $this->from = $args['from'];
    }
    if ($until_granularity) {
      $this->until = $args['until'];
    }
  }

  // Check identifier argument.
  if (isset($args['identifier'])) {
    $matches = array();
    if (preg_match('/^' . preg_quote($this
      ->make_record_identifier_prefix()) . '([0-9]+)$/', $args['identifier'], $matches)) {
      $this->nid = $matches[1];
    }
    else {
      $this->errors[] = new views_oai_pmh_error_invalid_id($args['identifier']);
    }
  }
}