/**
* Condition function to evaluate and display given block based on expressions
* 'args' => arguments for evaluation fields
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
*
*/
function wpv_condition($atts)
{
extract(shortcode_atts(array('evaluate' => FALSE), $atts));
global $post;
// if in admin, get the post from the URL
if (is_admin()) {
// Get post
if (isset($_GET['post'])) {
$post_id = (int) $_GET['post'];
} else {
if (isset($_POST['post_ID'])) {
$post_id = (int) $_POST['post_ID'];
} else {
$post_id = 0;
}
}
if ($post_id) {
$post = get_post($post_id);
}
}
global $wplogger;
$logging_string = "Original expression: " . $evaluate;
// evaluate empty() statements for variables
$empties = preg_match_all("/empty\\(\\s*\\\$(\\w+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = get_post_meta($post->ID, $atts[$matches[1][$i]], true);
$is_empty = '1=0';
// mark as empty only nulls and ""
if (is_null($match_var) || strlen($match_var) == 0) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
}
}
// find string variables and evaluate
$strings_count = preg_match_all('/((\\$\\w+)|(\'[^\']*\'))\\s*([\\!<>\\=]+)\\s*((\\$\\w+)|(\'[^\']*\'))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// replace variables with text representation
if (strpos($first_string, '$') === 0) {
$variable_name = substr($first_string, 1);
// omit dollar sign
$first_string = get_post_meta($post->ID, $atts[$variable_name], true);
}
if (strpos($second_string, '$') === 0) {
$variable_name = substr($second_string, 1);
$second_string = get_post_meta($post->ID, $atts[$variable_name], true);
}
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// don't do string comparison if variables are numbers
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
}
}
}
// find all variable placeholders in expression
$count = preg_match_all('/\\$(\\w+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
wpv_sort_matches_by_length(&$matches[1]);
foreach ($matches[1] as $match) {
$meta = get_post_meta($post->ID, $atts[$match], true);
if (empty($meta)) {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
// return true, false or error string to the conditional caller
return $result;
}
/**
* Condition function to evaluate and display given block based on expressions
* 'args' => arguments for evaluation fields
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
*
* @note As of 1.9, this is not used in Views anymore, seems to be used on the toolset-forms library
*/
function wpv_condition($atts, $post_to_check = null)
{
extract(shortcode_atts(array('evaluate' => FALSE), $atts));
// Do not overwrite global post
// global $post;
// if in admin, get the post from the URL
if (is_admin()) {
if (empty($post_to_check->ID)) {
// Get post
if (isset($_GET['post'])) {
$post_id = (int) $_GET['post'];
} else {
if (isset($_POST['post_ID'])) {
$post_id = (int) $_POST['post_ID'];
} else {
$post_id = 0;
}
}
if ($post_id) {
$post = get_post($post_id);
}
} else {
$post = $post_to_check;
}
}
if (empty($post->ID)) {
global $post;
}
$has_post = true;
if (empty($post->ID)) {
// Will not execute any condition that involves custom fields
$has_post = false;
}
global $wplogger;
if ($has_post) {
do_action('wpv_condition', $post);
}
$logging_string = "Original expression: " . $evaluate;
add_filter('wpv-extra-condition-filters', 'wpv_add_time_functions');
$evaluate = apply_filters('wpv-extra-condition-filters', $evaluate);
$logging_string .= "; After extra conditions: " . $evaluate;
// evaluate empty() statements for variables
if ($has_post) {
$empties = preg_match_all("/empty\\(\\s*\\\$(\\w+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = get_post_meta($post->ID, $atts[$matches[1][$i]], true);
$is_empty = '1=0';
// mark as empty only nulls and ""
// if ( is_null( $match_var ) || strlen( $match_var ) == 0 ) {
if (is_null($match_var) || is_string($match_var) && strlen($match_var) == 0 || is_array($match_var) && empty($match_var)) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
$logging_string .= "; After empty: " . $evaluate;
}
}
}
// find variables that are to be used as strings.
// eg '$f1'
// will replace $f1 with the actual field value
if ($has_post) {
$strings_count = preg_match_all('/(\'[\\$\\w^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (strpos($string, '$') === 0) {
$variable_name = substr($string, 1);
// omit dollar sign
if (isset($atts[$variable_name])) {
$string = get_post_meta($post->ID, $atts[$variable_name], true);
$evaluate = str_replace($matches[1][$i], "'" . $string . "'", $evaluate);
$logging_string .= "; After variables I: " . $evaluate;
}
}
}
}
}
// find string variables and evaluate
$strings_count = preg_match_all('/((\\$\\w+)|(\'[^\']*\'))\\s*([\\!<>\\=]+)\\s*((\\$\\w+)|(\'[^\']*\'))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// replace variables with text representation
if (strpos($first_string, '$') === 0 && $has_post) {
$variable_name = substr($first_string, 1);
// omit dollar sign
if (isset($atts[$variable_name])) {
$first_string = get_post_meta($post->ID, $atts[$variable_name], true);
} else {
$first_string = '';
}
}
if (strpos($second_string, '$') === 0 && $has_post) {
$variable_name = substr($second_string, 1);
if (isset($atts[$variable_name])) {
$second_string = get_post_meta($post->ID, $atts[$variable_name], true);
} else {
$second_string = '';
}
}
// don't do string comparison if variables are numbers
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
} else {
$evaluate = str_replace($matches[1][$i], $first_string, $evaluate);
$evaluate = str_replace($matches[5][$i], $second_string, $evaluate);
}
$logging_string .= "; After variables II: " . $evaluate;
}
}
// find remaining strings that maybe numeric values.
// This handles 1='1'
$strings_count = preg_match_all('/(\'[^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (is_numeric($string)) {
$evaluate = str_replace($matches[1][$i], $string, $evaluate);
$logging_string .= "; After variables III: " . $evaluate;
}
}
}
// find all variable placeholders in expression
if ($has_post) {
$count = preg_match_all('/\\$(\\w+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
$matches[1] = wpv_sort_matches_by_length($matches[1]);
foreach ($matches[1] as $match) {
if (isset($atts[$match])) {
$meta = get_post_meta($post->ID, $atts[$match], true);
if (empty($meta)) {
$meta = "0";
}
} else {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
$logging_string .= "; After variables IV: " . $evaluate;
}
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
if ($has_post) {
do_action('wpv_condition_end', $post);
}
// return true, false or error string to the conditional caller
return $result;
}
/**
* Condition function to evaluate and display given block based on expressions
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
* @global type $wplogger
* @param type $evaluate
* @param type $fields
* @return type
*/
protected function _wpv_condition($evaluate, $fields)
{
global $wplogger;
$logging_string = "Original expression: " . $evaluate;
add_filter('wpv-extra-condition-filters', 'wpv_add_time_functions');
$evaluate = apply_filters('wpv-extra-condition-filters', $evaluate);
// evaluate empty() statements for variables
// $empties = preg_match_all( "/empty\(\s*\\$(\w+)\s*\)/", $evaluate,
// $matches );
$empties = preg_match_all("/empty\\(\\s*\\\$([\\w_-]+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = $this->_getValue($fields[$matches[1][$i]]);
$is_empty = '1=0';
// mark as empty only nulls and ""
// if ( is_null( $match_var ) || strlen( $match_var ) == 0 ) {
if (is_null($match_var) || is_string($match_var) && strlen($match_var) == 0 || is_array($match_var) && empty($match_var)) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
}
}
// find variables that are to be used as strings.
// eg '$f1'
// will replace $f1 with the actual field value
$strings_count = preg_match_all('/(\'[\\$\\w^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (strpos($string, '$') === 0) {
$variable_name = substr($string, 1);
// omit dollar sign
if (isset($fields[$variable_name])) {
$string = $this->_getValue($fields[$variable_name]);
$evaluate = str_replace($matches[1][$i], "'" . $string . "'", $evaluate);
}
}
}
}
// find string variables and evaluate
// $strings_count = preg_match_all( '/((\$\w+)|(\'[^\']*\'))\s*([\!<>\=]+)\s*((\$\w+)|(\'[^\']*\'))/',
// $evaluate, $matches );
$strings_count = preg_match_all('/((\\$[\\w_-]+)|([\'\\d][^\']*[\'\\d]))\\s*([\\!<>\\=]+)\\s*((\\$[\\w_-]+)|([\'\\d][^\']*[\'\\d]))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// replace variables with text representation
if (strpos($first_string, '$') === 0) {
$variable_name = substr($first_string, 1);
// omit dollar sign
if (isset($fields[$variable_name])) {
$first_string = $this->_getValue($fields[$variable_name]);
} else {
$first_string = '';
}
}
if (strpos($second_string, '$') === 0) {
$variable_name = substr($second_string, 1);
if (isset($fields[$variable_name])) {
$second_string = $this->_getValue($fields[$variable_name]);
} else {
$second_string = '';
}
}
// don't do string comparison if variables are numbers
if (is_numeric($first_string) && !is_numeric($second_string) || !is_numeric($first_string) && is_numeric($second_string)) {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
} else {
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
} else {
$evaluate = str_replace($matches[1][$i], $first_string, $evaluate);
$evaluate = str_replace($matches[5][$i], $second_string, $evaluate);
}
}
}
}
// find remaining strings that maybe numeric values.
// This handles 1='1'
$strings_count = preg_match_all('/(\'[^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (is_numeric($string)) {
$evaluate = str_replace($matches[1][$i], $string, $evaluate);
}
}
}
// find all variable placeholders in expression
// $count = preg_match_all( '/\$(\w+)/', $evaluate, $matches );
$count = preg_match_all('/\\$([\\w-_]+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
$matches[1] = wpv_sort_matches_by_length($matches[1]);
foreach ($matches[1] as $match) {
if (isset($fields[$match])) {
$meta = $this->_getValue($fields[$match]);
if (empty($meta)) {
$meta = "0";
}
} else {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
// return true, false or error string to the conditional caller
return $result;
}
