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<?php
namespace Smarty\Compile;
/**
* This class handles compiling the attributes.
*/
class AttributeCompiler
{
/**
* Array of names of required attributes required by tag
*
* @var array
*/
protected $required_attributes = [];
/**
* Array of names of optional attribute required by tag
* use array('_any') if there is no restriction of attributes names
*
* @var array
*/
protected $optional_attributes = [];
/**
* Shorttag attribute order defined by its names
*
* @var array
*/
protected $shorttag_order = [];
/**
* Array of names of valid option flags
*
* @var array
*/
protected $option_flags = [];
public function __construct(
array $required_attributes = [],
array $optional_attributes = [],
array $shorttag_order = [],
array $option_flags = []
) {
$this->required_attributes = $required_attributes;
$this->optional_attributes = $optional_attributes;
$this->shorttag_order = $shorttag_order;
$this->option_flags = $option_flags;
}
/**
* This function checks if the attributes passed are valid
* The attributes passed for the tag to compile are checked against the list of required and
* optional attributes. Required attributes must be present. Optional attributes are check against
* the corresponding list. The keyword '_any' specifies that any attribute will be accepted
* as valid
*
* @param object $compiler compiler object
* @param array $attributes attributes applied to the tag
*
* @return array of mapped attributes for further processing
*/
public function getAttributes($compiler, $attributes)
{
$_indexed_attr = [];
$options = array_fill_keys($this->option_flags, true);
foreach ($attributes as $key => $mixed) {
// shorthand ?
if (!is_array($mixed)) {
// options flag ?
if (isset($options[trim($mixed, '\'"')])) {
$_indexed_attr[trim($mixed, '\'"')] = true;
// shorthand attribute ?
} elseif (isset($this->shorttag_order[$key])) {
$_indexed_attr[$this->shorttag_order[$key]] = $mixed;
} else {
// too many shorthands
$compiler->trigger_template_error('too many shorthand attributes', null, true);
}
// named attribute
} else {
foreach ($mixed as $k => $v) {
// options flag?
if (isset($options[$k])) {
if (is_bool($v)) {
$_indexed_attr[$k] = $v;
} else {
if (is_string($v)) {
$v = trim($v, '\'" ');
}
// Mapping array for boolean option value
static $optionMap = [1 => true, 0 => false, 'true' => true, 'false' => false];
if (isset($optionMap[$v])) {
$_indexed_attr[$k] = $optionMap[$v];
} else {
$compiler->trigger_template_error(
"illegal value '" . var_export($v, true) .
"' for options flag '{$k}'",
null,
true
);
}
}
// must be named attribute
} else {
$_indexed_attr[$k] = $v;
}
}
}
}
// check if all required attributes present
foreach ($this->required_attributes as $attr) {
if (!isset($_indexed_attr[$attr])) {
$compiler->trigger_template_error("missing '{$attr}' attribute", null, true);
}
}
// check for not allowed attributes
if ($this->optional_attributes !== ['_any']) {
$allowedAttributes = array_fill_keys(
array_merge(
$this->required_attributes,
$this->optional_attributes,
$this->option_flags
),
true
);
foreach ($_indexed_attr as $key => $dummy) {
if (!isset($allowedAttributes[$key]) && $key !== 0) {
$compiler->trigger_template_error("unexpected '{$key}' attribute", null, true);
}
}
}
// default 'false' for all options flags not set
foreach ($this->option_flags as $flag) {
if (!isset($_indexed_attr[$flag])) {
$_indexed_attr[$flag] = false;
}
}
return $_indexed_attr;
}
}
|
