<?php
/**
* @package s9e\TextFormatter
* @copyright Copyright (c) 2010-2021 The s9e authors
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
namespace s9e\TextFormatter\Configurator\Collections;
use ArrayAccess;
use BadMethodCallException;
use InvalidArgumentException;
use RuntimeException;
use s9e\TextFormatter\Configurator\ConfigProvider;
use s9e\TextFormatter\Configurator\JavaScript\Dictionary;
use s9e\TextFormatter\Configurator\Validators\TagName;
use s9e\TextFormatter\Parser;
/**
* @method void allowChild(string $tagName)
* @method void allowDescendant(string $tagName)
* @method void autoClose(bool $bool = true)
* @method void autoReopen(bool $bool = true)
* @method void breakParagraph(bool $bool = true)
* @method void closeAncestor(string $tagName)
* @method void closeParent(string $tagName)
* @method void createChild(string $tagName)
* @method void createParagraphs(bool $bool = true)
* @method void denyChild(string $tagName)
* @method void denyDescendant(string $tagName)
* @method void disableAutoLineBreaks(bool $bool = true)
* @method void enableAutoLineBreaks(bool $bool = true)
* @method void fosterParent(string $tagName)
* @method void ignoreSurroundingWhitespace(bool $bool = true)
* @method void ignoreTags(bool $bool = true)
* @method void ignoreText(bool $bool = true)
* @method void isTransparent(bool $bool = true)
* @method void preventLineBreaks(bool $bool = true)
* @method void requireParent(string $tagName)
* @method void requireAncestor(string $tagName)
* @method void suspendAutoLineBreaks(bool $bool = true)
* @method void trimFirstLine(bool $bool = true)
* @see /docs/Rules.md
*/
class Ruleset extends Collection implements ArrayAccess, ConfigProvider
{
/**
* @var array Supported rules and the method used to add them
*/
protected $rules = [
'allowChild' => 'addTargetedRule',
'allowDescendant' => 'addTargetedRule',
'autoClose' => 'addBooleanRule',
'autoReopen' => 'addBooleanRule',
'breakParagraph' => 'addBooleanRule',
'closeAncestor' => 'addTargetedRule',
'closeParent' => 'addTargetedRule',
'createChild' => 'addTargetedRule',
'createParagraphs' => 'addBooleanRule',
'denyChild' => 'addTargetedRule',
'denyDescendant' => 'addTargetedRule',
'disableAutoLineBreaks' => 'addBooleanRule',
'enableAutoLineBreaks' => 'addBooleanRule',
'fosterParent' => 'addTargetedRule',
'ignoreSurroundingWhitespace' => 'addBooleanRule',
'ignoreTags' => 'addBooleanRule',
'ignoreText' => 'addBooleanRule',
'isTransparent' => 'addBooleanRule',
'preventLineBreaks' => 'addBooleanRule',
'requireParent' => 'addTargetedRule',
'requireAncestor' => 'addTargetedRule',
'suspendAutoLineBreaks' => 'addBooleanRule',
'trimFirstLine' => 'addBooleanRule'
];
/**
* Add a rule to this set
*
* @param string $methodName Rule name
* @param array $args Arguments used to add given rule
* @return self
*/
public function __call($methodName, array $args)
{
if (!isset($this->rules[$methodName]))
{
throw new BadMethodCallException("Undefined method '" . $methodName . "'");
}
array_unshift($args, $methodName);
call_user_func_array([$this, $this->rules[$methodName]], $args);
return $this;
}
//==========================================================================
// ArrayAccess methods
//==========================================================================
/**
* Test whether a rule category exists
*
* @param string $k Rule name, e.g. "allowChild" or "isTransparent"
*/
public function offsetExists($k): bool
{
return isset($this->items[$k]);
}
/**
* Return the content of a rule category
*
* @param string $k Rule name, e.g. "allowChild" or "isTransparent"
* @return mixed
*/
#[\ReturnTypeWillChange]
public function offsetGet($k)
{
return $this->items[$k];
}
/**
* Not supported
*/
public function offsetSet($k, $v): void
{
throw new RuntimeException('Not supported');
}
/**
* Clear a subset of the rules
*
* @see clear()
*
* @param string $k Rule name, e.g. "allowChild" or "isTransparent"
*/
public function offsetUnset($k): void
{
$this->remove($k);
}
//==========================================================================
// Generic methods
//==========================================================================
/**
* {@inheritdoc}
*/
public function asConfig()
{
$config = $this->items;
// Remove rules that are not needed at parsing time. All of those are resolved when building
// the allowed bitfields
unset($config['allowChild']);
unset($config['allowDescendant']);
unset($config['denyChild']);
unset($config['denyDescendant']);
unset($config['requireParent']);
// Pack boolean rules into a bitfield
$bitValues = [
'autoClose' => Parser::RULE_AUTO_CLOSE,
'autoReopen' => Parser::RULE_AUTO_REOPEN,
'breakParagraph' => Parser::RULE_BREAK_PARAGRAPH,
'createParagraphs' => Parser::RULE_CREATE_PARAGRAPHS,
'disableAutoLineBreaks' => Parser::RULE_DISABLE_AUTO_BR,
'enableAutoLineBreaks' => Parser::RULE_ENABLE_AUTO_BR,
'ignoreSurroundingWhitespace' => Parser::RULE_IGNORE_WHITESPACE,
'ignoreTags' => Parser::RULE_IGNORE_TAGS,
'ignoreText' => Parser::RULE_IGNORE_TEXT,
'isTransparent' => Parser::RULE_IS_TRANSPARENT,
'preventLineBreaks' => Parser::RULE_PREVENT_BR,
'suspendAutoLineBreaks' => Parser::RULE_SUSPEND_AUTO_BR,
'trimFirstLine' => Parser::RULE_TRIM_FIRST_LINE
];
$bitfield = 0;
foreach ($bitValues as $ruleName => $bitValue)
{
if (!empty($config[$ruleName]))
{
$bitfield |= $bitValue;
}
unset($config[$ruleName]);
}
// In order to speed up lookups, we use the tag names as keys
foreach (['closeAncestor', 'closeParent', 'fosterParent'] as $ruleName)
{
if (isset($config[$ruleName]))
{
$targets = array_fill_keys($config[$ruleName], 1);
$config[$ruleName] = new Dictionary($targets);
}
}
// Add the bitfield to the config
$config['flags'] = $bitfield;
return $config;
}
/**
* Merge a set of rules into this collection
*
* @param array|Ruleset $rules 2D array of rule definitions, or instance of Ruleset
* @param bool $overwrite Whether to overwrite scalar rules (e.g. boolean rules)
*/
public function merge($rules, $overwrite = true)
{
if (!is_array($rules)
&& !($rules instanceof self))
{
throw new InvalidArgumentException('merge() expects an array or an instance of Ruleset');
}
foreach ($rules as $action => $value)
{
if (is_array($value))
{
foreach ($value as $tagName)
{
$this->$action($tagName);
}
}
elseif ($overwrite || !isset($this->items[$action]))
{
$this->$action($value);
}
}
}
/**
* Remove a specific rule, or all the rules of a given type
*
* @param string $type Type of rules to clear
* @param string $tagName Name of the target tag, or none to remove all rules of given type
* @return void
*/
public function remove($type, $tagName = null)
{
if (preg_match('(^default(?:Child|Descendant)Rule)', $type))
{
throw new InvalidArgumentException('Cannot remove ' . $type);
}
if (isset($tagName))
{
$tagName = TagName::normalize($tagName);
if (isset($this->items[$type]))
{
// Compute the difference between current list and our one tag name
$this->items[$type] = array_diff(
$this->items[$type],
[$tagName]
);
if (empty($this->items[$type]))
{
// If the list is now empty, keep it neat and unset it
unset($this->items[$type]);
}
else
{
// If the list still have names, keep it neat and rearrange keys
$this->items[$type] = array_values($this->items[$type]);
}
}
}
else
{
unset($this->items[$type]);
}
}
//==========================================================================
// Rules
//==========================================================================
/**
* Add a boolean rule
*
* @param string $ruleName Name of the rule
* @param bool $bool Whether to enable or disable the rule
* @return self
*/
protected function addBooleanRule($ruleName, $bool = true)
{
if (!is_bool($bool))
{
throw new InvalidArgumentException($ruleName . '() expects a boolean');
}
$this->items[$ruleName] = $bool;
}
/**
* Add a targeted rule
*
* @param string $ruleName Name of the rule
* @param string $tagName Name of the target tag
* @return self
*/
protected function addTargetedRule($ruleName, $tagName)
{
$this->items[$ruleName][] = TagName::normalize($tagName);
}
}