/**
* This is a singleton
*
* @return PHPTAL_TalesRegistry
*/
public static function getInstance()
{
if (!self::$instance) {
self::$instance = new PHPTAL_TalesRegistry();
}
return self::$instance;
}
function phptal_tales($expression, $nothrow = false)
{
$expression = trim($expression);
// Look for tales modifier (string:, exists:, etc...)
//if (preg_match('/^([-a-z]+):(.*?)$/', $expression, $m)) {
if (preg_match('/^([a-z][-.a-z]*[a-z]):(.*?)$/i', $expression, $m)) {
list(, $typePrefix, $expression) = $m;
} else {
if (preg_match('/^\'((?:[^\']|\\\\.)*)\'$/', $expression, $m)) {
$expression = stripslashes($m[1]);
$typePrefix = 'string';
} else {
$typePrefix = 'path';
}
}
// is a registered TALES expression modifier
if (PHPTAL_TalesRegistry::getInstance()->isRegistered($typePrefix)) {
$callback = PHPTAL_TalesRegistry::getInstance()->getCallback($typePrefix);
return call_user_func($callback, $expression, $nothrow);
}
// class method
if (strpos($typePrefix, '.')) {
$classCallback = explode('.', $typePrefix, 2);
$callbackName = NULL;
if (!is_callable($classCallback, FALSE, $callbackName)) {
$err = 'Unknown phptal modifier %s function %s does not exists or is not statically callable.';
$err = sprintf($err, $typePrefix, $callbackName);
throw new PHPTAL_Exception($err);
}
$ref = new ReflectionClass($classCallback[0]);
if (!$ref->implementsInterface('PHPTAL_Tales')) {
$err = 'Unable to use phptal modifier %s as the class %s does not implement the PHPTAL_Tales interface.';
$err = sprintf($err, $typePrefix, $callbackName);
throw new PHPTAL_Exception($err);
}
return call_user_func($classCallback, $expression, $nothrow);
}
// check if it is implemented via code-generating function
$func = 'phptal_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($func)) {
return $func($expression, $nothrow);
}
// check if it is implemented via runtime function
$runfunc = 'phptal_runtime_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($runfunc)) {
return "{$runfunc}(" . phptal_tale($expression, $nothrow) . ")";
}
throw new PHPTAL_Exception("Unknown phptal modifier '{$typePrefix}'. Function '{$func}' does not exist");
}
public static function registerInternalTales()
{
static $registered = false;
if ($registered) {
return;
}
$registry = PHPTAL_TalesRegistry::getInstance();
$registry->registerPrefix('not', array(__CLASS__, 'not'));
$registry->registerPrefix('path', array(__CLASS__, 'path'));
$registry->registerPrefix('string', array(__CLASS__, 'string'));
$registry->registerPrefix('php', array(__CLASS__, 'php'));
$registry->registerPrefix('exists', array(__CLASS__, 'exists'));
$registry->registerPrefix('number', array(__CLASS__, 'number'));
$registry->registerPrefix('true', array(__CLASS__, 'true'));
$registered = true;
}
/**
* returns PHP code that will evaluate given TALES expression.
* e.g. "string:foo${bar}" may be transformed to "'foo'.phptal_escape($ctx->bar)"
*
* Expressions with alternatives ("foo | bar") will cause it to return array
* Use PHPTAL_Php_TalesInternal::compileToPHPExpression() if you always want string.
*
* @param bool $nothrow if true, invalid expression will return NULL (at run time) rather than throwing exception
* @return string or array
*/
public static function compileToPHPStatements($expression, $nothrow = false)
{
$expression = trim($expression);
// Look for tales modifier (string:, exists:, etc...)
if (preg_match('/^([a-z][a-z0-9._-]*[a-z0-9]):(.*)$/si', $expression, $m)) {
list(, $typePrefix, $expression) = $m;
} elseif (preg_match('/^\'((?:[^\']|\\\\.)*)\'$/s', $expression, $m)) {
$expression = stripslashes($m[1]);
$typePrefix = 'string';
} else {
$typePrefix = 'path';
}
// is a registered TALES expression modifier
if (PHPTAL_TalesRegistry::getInstance()->isRegistered($typePrefix)) {
$callback = PHPTAL_TalesRegistry::getInstance()->getCallback($typePrefix);
return call_user_func($callback, $expression, $nothrow);
}
// class method
if (strpos($typePrefix, '.')) {
$classCallback = explode('.', $typePrefix, 2);
$callbackName = null;
if (!is_callable($classCallback, FALSE, $callbackName)) {
throw new PHPTAL_UnknownModifierException("Unknown phptal modifier {$typePrefix}. Function {$callbackName} does not exists or is not statically callable", $typePrefix);
}
$ref = new ReflectionClass($classCallback[0]);
if (!$ref->implementsInterface('PHPTAL_Tales')) {
throw new PHPTAL_UnknownModifierException("Unable to use phptal modifier {$typePrefix} as the class {$callbackName} does not implement the PHPTAL_Tales interface", $typePrefix);
}
return call_user_func($classCallback, $expression, $nothrow);
}
// check if it is implemented via code-generating function
$func = 'phptal_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($func)) {
return $func($expression, $nothrow);
}
// check if it is implemented via runtime function
$runfunc = 'phptal_runtime_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($runfunc)) {
return "{$runfunc}(" . self::compileToPHPExpression($expression, $nothrow) . ")";
}
throw new PHPTAL_UnknownModifierException("Unknown phptal modifier '{$typePrefix}'. Function '{$func}' does not exist", $typePrefix);
}
protected static function getPHPExpressionsForModifier($typePrefix, $expression, $nothrow)
{
// is a registered TALES expression modifier
if (PHPTAL_TalesRegistry::getInstance()->isRegistered($typePrefix)) {
$callback = PHPTAL_TalesRegistry::getInstance()->getCallback($typePrefix);
return call_user_func($callback, $expression, $nothrow);
}
// class method
if (strpos($typePrefix, '.')) {
$classCallback = explode('.', $typePrefix, 2);
$callbackName = null;
if (!is_callable($classCallback, false, $callbackName)) {
throw new PHPTAL_UnknownModifierException("Unknown phptal modifier {$typePrefix}. Function {$callbackName} does not exists or is not statically callable", $typePrefix);
}
$ref = new ReflectionClass($classCallback[0]);
if (!$ref->implementsInterface('PHPTAL_Tales')) {
throw new PHPTAL_UnknownModifierException("Unable to use phptal modifier {$typePrefix} as the class {$callbackName} does not implement the PHPTAL_Tales interface", $typePrefix);
}
return call_user_func($classCallback, $expression, $nothrow);
}
// check if it is implemented via code-generating function
$func = 'phptal_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($func)) {
return $func($expression, $nothrow);
}
// The following code is automatically modified in version for PHP 5.3
$func = 'PHPTALNAMESPACE\\phptal_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($func)) {
return $func($expression, $nothrow);
}
// check if it is implemented via runtime function
$runfunc = 'phptal_runtime_tales_' . str_replace('-', '_', $typePrefix);
if (function_exists($runfunc)) {
return "{$runfunc}(" . self::compileToPHPExpression($expression, $nothrow) . ")";
}
throw new PHPTAL_UnknownModifierException("Unknown phptal modifier '{$typePrefix}'. Function '{$func}' does not exist", $typePrefix);
}
/**
* returns PHP code that will evaluate given TALES expression.
* e.g. "string:foo${bar}" may be transformed to "'foo'.phptal_escape($ctx->bar)"
*
* Expressions with alternatives ("foo | bar") will cause it to return array
* Use PHPTAL_Php_TalesInternal::compileToPHPExpression() if you always want string.
*
* @param bool $nothrow if true, invalid expression will return NULL (at run time) rather than throwing exception
*
* @return string or array
*/
public static function compileToPHPExpressions($expression, $nothrow = false)
{
$expression = trim($expression);
// Look for tales modifier (string:, exists:, etc...)
if (preg_match('/^([a-z](?:[a-z0-9._-]*[a-z0-9])?):(.*)$/si', $expression, $m)) {
list(, $typePrefix, $expression) = $m;
} elseif (preg_match('/^\'((?:[^\']|\\\\.)*)\'$/s', $expression, $m)) {
$expression = stripslashes($m[1]);
$typePrefix = 'string';
} else {
$typePrefix = 'path';
}
// is a registered TALES expression modifier
$callback = PHPTAL_TalesRegistry::getInstance()->getCallback($typePrefix);
if ($callback !== NULL) {
$result = call_user_func($callback, $expression, $nothrow);
self::verifyPHPExpressions($typePrefix, $result);
return $result;
}
$func = 'phptal_tales_' . str_replace('-', '_', $typePrefix);
throw new PHPTAL_UnknownModifierException("Unknown phptal modifier '{$typePrefix}'. Function '{$func}' does not exist", $typePrefix);
}
function testCanRegisterFallbackOverRegistered()
{
PHPTAL_TalesRegistry::getInstance()->registerPrefix('registry_test_6', 'registry_test_callback2');
PHPTAL_TalesRegistry::getInstance()->registerPrefix('registry_test_6', 'registry_test_callback', true);
}
return "!phptal_isempty(" . phptal_tale($src, true) . ")";
}
public static function _empty($src, $nothrow)
{
return "phptal_isempty(" . phptal_tale($src, true) . ")";
}
public static function cssodd($src, $nothrow)
{
return '(' . phptal_tale($src, $nothrow) . ' ? "odd" : "even" )';
}
public static function nozeroFUNC($val)
{
if ((int) $val === 0) {
return null;
}
return $val;
}
public static function nozero($src, $nothrow)
{
$exp = Template::SplitSRC($src, $nothrow);
array_unshift($exp, 'Template_Tales::nozeroFUNC(' . phptal_tale($src, $nothrow) . ')');
return $exp;
}
}
PHPTAL_TalesRegistry::getInstance()->registerPrefix("limit", array('Template_Tales', 'limit'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("empty", array('Template_Tales', '_empty'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("notempty", array('Template_Tales', 'notempty'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("count", array('Template_Tales', 'count'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("cssodd", array('Template_Tales', 'cssodd'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("nozero", array('Template_Tales', 'nozero'));
}
public static function cssodd($src, $nothrow)
{
return '(' . phptal_tale($src, $nothrow) . ' ? "odd" : "even" )';
}
public static function nozeroFUNC($val)
{
if ((int) $val === 0) {
return null;
}
return $val;
}
public static function nozero($src, $nothrow)
{
$exp = Template::SplitSRC($src, $nothrow);
array_unshift($exp, 'Template_Tales::nozeroFUNC(' . phptal_tale($src, $nothrow) . ')');
return $exp;
}
public static function json($src, $nothrow)
{
return 'json_encode(' . phptal_tale($src, $nothrow) . ')';
}
}
PHPTAL_TalesRegistry::getInstance()->registerPrefix("limit", array('Template_Tales', 'limit'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("empty", array('Template_Tales', '_empty'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("notempty", array('Template_Tales', 'notempty'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("count", array('Template_Tales', 'count'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("cssodd", array('Template_Tales', 'cssodd'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("nozero", array('Template_Tales', 'nozero'));
PHPTAL_TalesRegistry::getInstance()->registerPrefix("json", array('Template_Tales', 'json'));
public static function initialize()
{
self::$instance = new PHPTAL_TalesRegistry();
}
