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<?php
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// $Id: flexifilter.conditions.inc,v 1.5 2008/01/21 16:42:35 corsix Exp $
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/**
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* Implementation of hook_flexifilter_conditions()
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*/
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function flexifilter_flexifilter_conditions() {
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$conditions = array();
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$conditions['flexifilter_group_or'] = array(
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'label' => t('OR Group'),
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'description' => t('True if any of the contained conditions are true'),
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'contains_conditions' => TRUE,
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'callback' => 'flexifilter_condition_group_or',
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'group' => t('Logic'),
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);
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$conditions['flexifilter_group_and'] = array(
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'label' => t('AND Group'),
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'description' => t('True if all of the contained conditions are true'),
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'contains_conditions' => TRUE,
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'callback' => 'flexifilter_condition_group_and',
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'group' => t('Logic'),
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);
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$conditions['flexifilter_group_not'] = array(
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'label' => t('NOT Group'),
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'description' => t('True if any of the contained conditions are false'),
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'contains_conditions' => TRUE,
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'callback' => 'flexifilter_condition_group_not',
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'group' => t('Logic'),
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);
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$conditions['flexifilter_true'] = array(
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'label' => t('Always true'),
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'callback' => 'flexifilter_condition_constant',
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'callback_arguments' => array(TRUE),
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'group' => t('Logic'),
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);
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$conditions['flexifilter_false'] = array(
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'label' => t('Always false'),
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'callback' => 'flexifilter_condition_constant',
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'callback_arguments' => array(FALSE),
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'group' => t('Logic'),
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);
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$conditions['flexifilter_text_search'] = array(
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'label' => t('Text contains phrase'),
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'description' => t('True if the text contains the specified phrase. Can optionally use regular expressions.'),
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'callback' => 'flexifilter_condition_text_search',
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'group' => t('Text'),
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);
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$conditions['flexifilter_text_length'] = array(
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'label' => t('Text length is...'),
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'description' => t('True if the text length meets the condition.'),
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'callback' => 'flexifilter_condition_text_length',
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'group' => t('Text'),
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);
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$conditions['flexifilter_step_prepare'] = array(
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'label' => t('Is preparation step'),
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'description' => t('True only during the preparation step of filtering.'),
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'callback' => 'flexifilter_condition_step',
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'callback_arguments' => array('prepare'),
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'group' => t('Filtering Steps'),
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'is_advanced' => TRUE,
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);
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$conditions['flexifilter_step_process'] = array(
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'label' => t('Is processing step'),
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'description' => t('True only during the processing step of filtering.'),
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'callback' => 'flexifilter_condition_step',
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'callback_arguments' => array('process'),
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'group' => t('Filtering Steps'),
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'is_advanced' => TRUE,
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);
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// Advanced.
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$conditions['flexifilter_advanced_php'] = array(
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'label' => t('PHP code'),
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'description' => t('Uses php code to evaluate a condition.'),
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'callback' => 'flexifilter_condition_advanced_php',
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'group' => t('Advanced'),
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'is_advanced' => TRUE,
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'step' => 'either',
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);
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return $conditions;
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if the phrase/regex is found in the text.
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*/
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function flexifilter_condition_text_search($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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$form['find'] = array(
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'#type' => 'textfield',
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'#title' => t('Text to find'),
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'#default_value' => isset($settings['find']) ? $settings['find'] : '',
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'#required' => TRUE,
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);
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$form['is_regex'] = array(
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'#type' => 'checkbox',
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'#title' => t('Use regular expressions'),
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'#description' => t('If ticked, then the above text to find is interpreted as a regular expression.'),
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'#default_value' => isset($settings['is_regex']) ? $settings['is_regex'] : 0,
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);
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return $form;
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case 'prepare':
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case 'process':
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if (isset($settings['is_regex']) && $settings['is_regex'] == 1) {
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return preg_match('~'. str_replace('~', '\~', $settings['find']) .'~', $text) == 1;
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}
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else {
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return strpos($text, $settings['find']) !== FALSE;
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}
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if the text length in characters meets the user-specified condition.
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*/
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function flexifilter_condition_text_length($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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$form['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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0 => 'Is less than',
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1 => 'Is less than or equal to',
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2 => 'Is equal to',
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3 => 'Is more than or equal to',
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4 => 'Is more than',
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),
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'#default_value' => isset($settings['operator']) ? $settings['operator'] : 0,
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'#required' => TRUE,
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);
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$form['num'] = array(
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'#type' => 'textfield',
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'#title' => t('Length in character count'),
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'#desrciption' => t('Leave blank for teaser length.'),
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'#default_value' => isset($settings['num']) ? $settings['num'] : '',
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'#required' => TRUE,
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);
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return $form;
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case 'prepare':
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case 'process':
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$length = strlen($text);
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$operator = isset($settings['operator']) ? $settings['operator'] : 0;
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$num = isset($settings['num']) ? $settings['num'] : variable_get('teaser_length', 600);;
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switch ($operator) {
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case 0:
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return ($length < $num);
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case 1:
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return ($length <= $num);
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case 2:
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return ($length == $num);
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case 3:
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return ($length >= $num);
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case 4:
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return ($length > $num);
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}
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if all of the conditions it contains are TRUE.
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*/
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function flexifilter_condition_group_and($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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return $form;
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case 'prepare':
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case 'process':
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foreach ($settings['conditions'] as $condition) {
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if (flexifilter_invoke_condition($condition, $op, $text) == FALSE) {
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return FALSE;
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}
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}
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return TRUE;
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if any of the conditions it contains are TRUE.
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*/
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function flexifilter_condition_group_or($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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return $form;
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case 'prepare':
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case 'process':
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foreach ($settings['conditions'] as $condition) {
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if (flexifilter_invoke_condition($condition, $op, $text) == TRUE) {
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return TRUE;
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}
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}
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return FALSE;
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if any of the conditions it contains are FALSE.
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*/
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function flexifilter_condition_group_not($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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return $form;
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case 'prepare':
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case 'process':
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foreach ($settings['conditions'] as $condition) {
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if (flexifilter_invoke_condition($condition, $op, $text) == FALSE) {
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return TRUE;
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}
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}
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return FALSE;
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns $constant.
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*
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* @param $constant
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* The constant to return, either TRUE or FALSE.
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*/
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function flexifilter_condition_constant($constant, $op, $settings, $text) {
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switch ($op) {
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case 'settings':
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return array();
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case 'prepare':
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case 'process':
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return $constant;
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns TRUE if the current step matches $step.
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*
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* @param $step
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* The step to match, either 'prepare' or 'process'.
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*/
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function flexifilter_condition_step($step, $op, $settings, $text) {
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switch ($op) {
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case 'settings':
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return array();
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case 'prepare':
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case 'process':
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return $step == $op;
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}
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}
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/**
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* Flexifilter condition callback.
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* Returns whatever the custom php code written by the user returns.
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* Is somewhat safe (as in it won't break your site) in that it only runs during the filtering process, thus not on every page load.
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*/
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function flexifilter_condition_advanced_php($op, $settings, $text) {
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switch ($op) {
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case 'settings':
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$form = array();
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$form['code'] = array(
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'#type' => 'textarea',
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'#title' => t('PHP code to be evaluated.'),
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'#description' => t('Enter the code to evaluate. Does not need <?php ?> tags. Available variables are <em>$text</em>, which contains the text, and $op, which contains the operation, which will either be "prepare" or "process". This should return either TRUE if the condition is true or FALSE if the condition is false. WARNING: Evaluating incorrect PHP code can break your site.'),
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'#default_value' => isset($settings['code']) ? $settings['code'] : 'return TRUE;',
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);
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return $form;
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case 'prepare':
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case 'process':
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$code = isset($settings['code']) ? $settings['code'] : 'return TRUE;';
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return eval($code);
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}
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}
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