+global\SimplePie::init()

Complexity

Conditions	38
Paths	2823

Size

Total Lines	183
Code Lines	87

Duplication

Lines	15
Ratio	8.2 %

Importance

Changes

0

<?php
	public function init()
	{
		// Check absolute bare minimum requirements.
		if (!extension_loaded('xml') || !extension_loaded('pcre'))
		{
			return false;
		}
		// Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader.
		elseif (!extension_loaded('xmlreader'))
		{
			static $xml_is_sane = null;
			if ($xml_is_sane === null)
			{
				$parser_check = xml_parser_create();
				xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
				xml_parser_free($parser_check);
				$xml_is_sane = isset($values[0]['value']);
			}
			if (!$xml_is_sane)
			{
				return false;
			}
		}

		if (method_exists($this->sanitize, 'set_registry'))
		{
			$this->sanitize->set_registry($this->registry);
		}

		// Pass whatever was set with config options over to the sanitizer.
		// Pass the classes in for legacy support; new classes should use the registry instead
		$this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->registry->get_class('Cache'));
		$this->sanitize->pass_file_data($this->registry->get_class('File'), $this->timeout, $this->useragent, $this->force_fsockopen);

		if (!empty($this->multifeed_url))
		{
			$i = 0;
			$success = 0;
			$this->multifeed_objects = array();
			$this->error = array();
			foreach ($this->multifeed_url as $url)
			{
				$this->multifeed_objects[$i] = clone $this;
				$this->multifeed_objects[$i]->set_feed_url($url);
				$single_success = $this->multifeed_objects[$i]->init();
				$success |= $single_success;
				if (!$single_success)
				{
					$this->error[$i] = $this->multifeed_objects[$i]->error();
				}
				$i++;
			}
			return (bool) $success;
		}
		elseif ($this->feed_url === null && $this->raw_data === null)
		{
			return false;
		}

		$this->error = null;
		$this->data = array();
		$this->multifeed_objects = array();
		$cache = false;

		if ($this->feed_url !== null)
		{
			$parsed_feed_url = $this->registry->call('Misc', 'parse_url', array($this->feed_url));

			// Decide whether to enable caching
			if ($this->cache && $parsed_feed_url['scheme'] !== '')
			{
				$cache = $this->registry->call('Cache', 'get_handler', array($this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc'));
			}

			// Fetch the data via SimplePie_File into $this->raw_data
			if (($fetched = $this->fetch_data($cache)) === true)
			{
				return true;
			}
			elseif ($fetched === false) {
				return false;
			}

			list($headers, $sniffed) = $fetched;
		}

		// Set up array of possible encodings
		$encodings = array();

		// First check to see if input has been overridden.
		if ($this->input_encoding !== false)
		{
			$encodings[] = $this->input_encoding;
		}

		$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
		$text_types = array('text/xml', 'text/xml-external-parsed-entity');

		// RFC 3023 (only applies to sniffed content)
		if (isset($sniffed))
		{
			if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
			{
				if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
				{
					$encodings[] = strtoupper($charset[1]);
				}
				$encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
				$encodings[] = 'UTF-8';
			}
			elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml')
			{
				if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
				{
					$encodings[] = $charset[1];
				}
				$encodings[] = 'US-ASCII';
			}
			// Text MIME-type default
			elseif (substr($sniffed, 0, 5) === 'text/')
			{
				$encodings[] = 'US-ASCII';
			}
		}

		// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
		$encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
		$encodings[] = 'UTF-8';
		$encodings[] = 'ISO-8859-1';

		// There's no point in trying an encoding twice
		$encodings = array_unique($encodings);

		// Loop through each possible encoding, till we return something, or run out of possibilities
		foreach ($encodings as $encoding)
		{
			// Change the encoding to UTF-8 (as we always use UTF-8 internally)
			if ($utf8_data = $this->registry->call('Misc', 'change_encoding', array($this->raw_data, $encoding, 'UTF-8')))
			{
				// Create new parser
				$parser = $this->registry->create('Parser');

				// If it's parsed fine
				if ($parser->parse($utf8_data, 'UTF-8'))
				{
					$this->data = $parser->get_data();
					if (!($this->get_type() & ~SIMPLEPIE_TYPE_NONE))
					{
						$this->error = "A feed could not be found at $this->feed_url. This does not appear to be a valid RSS or Atom feed.";
						$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
						return false;
					}

					if (isset($headers))
					{
						$this->data['headers'] = $headers;
					}
					$this->data['build'] = SIMPLEPIE_BUILD;

					// Cache the file if caching is enabled
					if ($cache && !$cache->save($this))
					{
						trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
					}
					return true;
				}
			}
		}

		if (isset($parser))
		{
			// We have an error, just set SimplePie_Misc::error to it and quit
			$this->error = sprintf('This XML document is invalid, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
		}
		else
		{
			$this->error = 'The data could not be converted to UTF-8. You MUST have either the iconv or mbstring extension installed. Upgrading to PHP 5.x (which includes iconv) is highly recommended.';
		}

		$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));

		return false;
	}

endif;