s9e\TextFormatter\Plugins\BBCodes\Configurator\BBCodeMonkey::parse()

Complexity

Conditions	10
Paths	49

Size

Total Lines	135
Code Lines	61

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	71
CRAP Score	10

<?php
	protected function parse($usage)
	{
		$tag    = new Tag;
		$bbcode = new BBCode;

		// This is the config we will return
		$config = [
			'tag'              => $tag,
			'bbcode'           => $bbcode,
			'passthroughToken' => null
		];

		// Encode maps to avoid special characters to interfere with definitions
		$usage = preg_replace_callback(
			'#(\\{(?>HASH)?MAP=)([^:]+:[^,;}]+(?>,[^:]+:[^,;}]+)*)(?=[;}])#',
			function ($m)
			{
				return $m[1] . base64_encode($m[2]);
			},
			$usage
		);

		// Encode regexps to avoid special characters to interfere with definitions
		$usage = preg_replace_callback(
			'#(\\{(?:PARSE|REGEXP)=)(' . self::REGEXP . '(?:,' . self::REGEXP . ')*)#',
			function ($m)
			{
				return $m[1] . base64_encode($m[2]);
			},
			$usage
		);

		$regexp = '(^'
		        // [BBCODE
		        . '\\[(?<bbcodeName>\\S+?)'
		        // ={TOKEN}
		        . '(?<defaultAttribute>=\\S+?)?'
		        // foo={TOKEN} bar={TOKEN1},{TOKEN2}
		        . '(?<attributes>(?:\\s+[^=]+=\\S+?)*?)?'
		        // ] or /] or ]{TOKEN}[/BBCODE]
		        . '\\s*(?:/?\\]|\\]\\s*(?<content>.*?)\\s*(?<endTag>\\[/\\1]))'
		        . '$)i';

		if (!preg_match($regexp, trim($usage), $m))
		{
			throw new InvalidArgumentException('Cannot interpret the BBCode definition');
		}

		// Save the BBCode's name
		$config['bbcodeName'] = BBCode::normalizeName($m['bbcodeName']);

		// Prepare the attributes definition, e.g. "foo={BAR}"
		$definitions = preg_split('#\\s+#', trim($m['attributes']), -1, PREG_SPLIT_NO_EMPTY);

		// If there's a default attribute, we prepend it to the list using the BBCode's name as
		// attribute name
		if (!empty($m['defaultAttribute']))
		{
			array_unshift($definitions, $m['bbcodeName'] . $m['defaultAttribute']);
		}

		// Append the content token to the attributes list under the name "content" if it's anything
		// but raw {TEXT} (or other unfiltered tokens)
		if (!empty($m['content']))
		{
			$regexp = '#^\\{' . RegexpBuilder::fromList($this->unfilteredTokens) . '[0-9]*\\}$#D';

			if (preg_match($regexp, $m['content']))
			{
				$config['passthroughToken'] = substr($m['content'], 1, -1);
			}
			else
			{
				$definitions[] = 'content=' . $m['content'];
				$bbcode->contentAttributes[] = 'content';
			}
		}

		// Separate the attribute definitions from the BBCode options
		$attributeDefinitions = [];
		foreach ($definitions as $definition)
		{
			$pos   = strpos($definition, '=');
			$name  = substr($definition, 0, $pos);
			$value = substr($definition, 1 + $pos);

			// Decode base64-encoded tokens
			$value = preg_replace_callback(
				'#(\\{(?>HASHMAP|MAP|PARSE|REGEXP)=)([A-Za-z0-9+/]+=*)#',
				function ($m)
				{
					return $m[1] . base64_decode($m[2]);
				},
				$value
			);

			// If name starts with $ then it's a BBCode options, if it starts with # it's a rule and
			// otherwise it's an attribute definition
			if ($name[0] === '$')
			{
				$optionName = substr($name, 1);
				$bbcode->$optionName = $this->convertValue($value);
			}
			elseif ($name[0] === '#')
			{
				$ruleName = substr($name, 1);

				// Supports #denyChild=foo,bar
				foreach (explode(',', $value) as $value)
				{
					$tag->rules->$ruleName($this->convertValue($value));
				}
			}
			else
			{
				$attrName = strtolower(trim($name));
				$attributeDefinitions[] = [$attrName, $value];
			}
		}

		// Add the attributes and get the token translation table
		$tokens = $this->addAttributes($attributeDefinitions, $bbcode, $tag);

		// Test whether the passthrough token is used for something else, in which case we need
		// to unset it
		if (isset($tokens[$config['passthroughToken']]))
		{
			$config['passthroughToken'] = null;
		}

		// Add the list of known (and only the known) tokens to the config
		$config['tokens'] = array_filter($tokens);

		return $config;
	}

}