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<?php
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/**
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* @file
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* Plugin to provide access control/visibility based on specified context string matching user-specified string.
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*/
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$plugin = array(
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'title' => t("String: comparison"),
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'description' => t('Control access by string match.'),
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'callback' => 'ctools_string_equal_ctools_access_check',
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'settings form' => 'ctools_string_equal_ctools_access_settings',
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'summary' => 'ctools_string_equal_ctools_access_summary',
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'required context' => new ctools_context_required(t('String'), 'string'),
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'defaults' => array('operator' => '=', 'value' => '', 'case' => FALSE),
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);
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/**
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* Settings form.
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*/
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function ctools_string_equal_ctools_access_settings($form, &$form_state, $conf) {
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$form['settings']['operator'] = array(
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'#type' => 'radios',
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'#title' => t('Operator'),
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'#options' => array(
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'=' => t('Equal'),
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'!=' => t('Not equal'),
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'regex' => t('Regular expression'),
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'!regex' => t('Not equal to regular expression'),
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),
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'#default_value' => $conf['operator'],
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'#description' => t('If using a regular expression, you should enclose the pattern in slashes like so: <em>/foo/</em>. If you need to compare against slashes you can use another character to enclose the pattern, such as @. See <a href="http://www.php.net/manual/en/reference.pcre.pattern.syntax.php">PHP regex documentation</a> for more.'),
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);
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$form['settings']['value'] = array(
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'#type' => 'textfield',
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'#title' => t('String'),
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'#default_value' => $conf['value'],
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);
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$form['settings']['case'] = array(
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'#type' => 'checkbox',
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'#title' => t('Case sensitive'),
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'#default_value' => $conf['case'],
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);
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return $form;
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}
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/**
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* Check for access.
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*/
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function ctools_string_equal_ctools_access_check($conf, $context) {
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if (empty($context) || empty($context->data)) {
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$string = '';
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}
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else {
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$string = $context->data;
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}
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$value = $conf['value'];
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if (empty($conf['case'])) {
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$string = drupal_strtolower($string);
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$value = drupal_strtolower($value);
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}
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switch ($conf['operator']) {
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case '=':
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return $string === $value;
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case '!=':
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return $string !== $value;
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case 'regex':
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return preg_match($value, $string);
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case '!regex':
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return !preg_match($value, $string);
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}
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}
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/**
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* Provide a summary description based upon the specified context.
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*/
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function ctools_string_equal_ctools_access_summary($conf, $context) {
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$values = array('@identifier' => $context->identifier, '@value' => $conf['value']);
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switch ($conf['operator']) {
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case '=':
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return t('@identifier is "@value"', $values);
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case '!=':
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return t('@identifier is not "@value"', $values);
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case 'regex':
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return t('@identifier matches "@value"', $values);
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case '!regex':
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return t('@identifier does not match "@value"', $values);
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}
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}
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