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<?php |
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namespace Consolidation\SiteAlias; |
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/** |
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* Parse a string that contains a site specification. |
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* |
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* Site specifications contain some of the following elements: |
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* - user |
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* - host |
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* - path |
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* - uri (multisite selector) |
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*/ |
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class SiteSpecParser |
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{ |
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/** |
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* @var string Relative path from the site root to directory where |
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* multisite configuration directories are found. |
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*/ |
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protected $multisiteDirectoryRoot = 'sites'; |
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/** |
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* Parse a site specification |
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* |
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* @param string $spec |
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* A site specification in one of the accepted forms: |
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* - /path/to/drupal#uri |
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* - user@server/path/to/drupal#uri |
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* - user@server/path/to/drupal |
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* - user@server#uri |
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* or, a site name: |
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* - #uri |
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* @param string $root |
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* Drupal root (if provided). |
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* @return array |
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* A site specification array with the specified components filled in: |
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* - user |
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* - host |
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* - path |
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* - uri |
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* or, an empty array if the provided parameter is not a valid site spec. |
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*/ |
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public function parse($spec, $root = '') |
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{ |
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$result = $this->match($spec); |
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return $this->fixAndCheckUsability($result, $root); |
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} |
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/** |
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* Determine if the provided specification is valid. Note that this |
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* tests only for syntactic validity; to see if the specification is |
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* usable, call 'parse()', which will also filter out specifications |
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* for local sites that specify a multidev site that does not exist. |
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* |
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* @param string $spec |
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* @see parse() |
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* @return bool |
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*/ |
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public function validSiteSpec($spec) |
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{ |
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$result = $this->match($spec); |
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return !empty($result); |
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} |
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/** |
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* Determine whether or not the provided name is an alias name. |
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* |
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* @param string $aliasName |
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* @return bool |
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*/ |
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public function isAliasName($aliasName) |
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{ |
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return !empty($aliasName) && ($aliasName[0] == '@'); |
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} |
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public function setMultisiteDirectoryRoot($location) |
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{ |
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$this->multisiteDirectoryRoot = $location; |
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} |
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public function getMultisiteDirectoryRoot($root) |
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{ |
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return $root . DIRECTORY_SEPARATOR . $this->multisiteDirectoryRoot; |
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} |
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/** |
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* Return the set of regular expression patterns that match the available |
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* site specification formats. |
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* |
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* @return array |
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* key: site specification regex |
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* value: an array mapping from site specification component names to |
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* the elements in the 'matches' array containing the data for that element. |
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*/ |
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protected function patterns() |
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{ |
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$PATH = '([a-zA-Z]:[/\\\\][^#]*|[/\\\\][^#]*)'; |
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$USER = '([a-zA-Z0-9\._-]+)'; |
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$SERVER = '([a-zA-Z0-9\._-]+)'; |
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$URI = '([a-zA-Z0-9_-]+)'; |
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return [ |
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// /path/to/drupal#uri |
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"%^{$PATH}#{$URI}\$%" => [ |
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'root' => 1, |
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'uri' => 2, |
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], |
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// user@server/path/to/drupal#uri |
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"%^{$USER}@{$SERVER}{$PATH}#{$URI}\$%" => [ |
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'user' => 1, |
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'host' => 2, |
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'root' => 3, |
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'uri' => 4, |
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], |
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// user@server/path/to/drupal |
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"%^{$USER}@{$SERVER}{$PATH}\$%" => [ |
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'user' => 1, |
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'host' => 2, |
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'root' => 3, |
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'uri' => 'default', // Or '2' if uri should be 'host' |
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], |
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// user@server#uri |
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"%^{$USER}@{$SERVER}#{$URI}\$%" => [ |
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'user' => 1, |
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'host' => 2, |
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'uri' => 3, |
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], |
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// #uri |
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"%^#{$URI}\$%" => [ |
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'uri' => 1, |
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], |
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]; |
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} |
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/** |
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* Run through all of the available regex patterns and determine if |
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* any match the provided specification. |
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* |
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* @return array |
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* @see parse() |
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*/ |
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protected function match($spec) |
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{ |
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foreach ($this->patterns() as $regex => $map) { |
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if (preg_match($regex, $spec, $matches)) { |
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return $this->mapResult($map, $matches); |
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} |
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} |
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return []; |
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} |
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/** |
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* Inflate the provided array so that it always contains the required |
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* elements. |
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* |
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* @return array |
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* @see parse() |
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*/ |
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protected function defaults($result = []) |
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{ |
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$result += [ |
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'root' => '', |
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'uri' => '', |
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]; |
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return $result; |
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} |
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/** |
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* Take the data from the matches from the regular expression and |
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* plug them into the result array per the info in the provided map. |
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* |
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* @param array $map |
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* An array mapping from result key to matches index. |
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* @param array $matches |
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* The matched strings returned from preg_match |
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* @return array |
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* @see parse() |
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*/ |
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protected function mapResult($map, $matches) |
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{ |
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$result = []; |
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foreach ($map as $key => $index) { |
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$value = is_string($index) ? $index : $matches[$index]; |
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$result[$key] = $value; |
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} |
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if (empty($result)) { |
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return []; |
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} |
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return $this->defaults($result); |
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} |
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/** |
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* Validate the provided result. If the result is local, then it must |
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* have a 'root'. If it does not, then fill in the root that was provided |
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* to us in our consturctor. |
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* |
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* @param array $result |
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* @see parse() result. |
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* @return array |
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* @see parse() |
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*/ |
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protected function fixAndCheckUsability($result, $root) |
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{ |
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if (empty($result) || !empty($result['host'])) { |
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return $result; |
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} |
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if (empty($result['root'])) { |
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// TODO: should these throw an exception, so the user knows |
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// why their site spec was invalid? |
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if (empty($root) || !is_dir($root)) { |
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return []; |
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} |
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$result['root'] = $root; |
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} |
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// If using a sitespec `#uri`, then `uri` MUST |
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// be the name of a folder that exists in __DRUPAL_ROOT__/sites. |
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// This restriction does NOT apply to the --uri option. Are there |
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// instances where we need to allow 'uri' to be a literal uri |
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// rather than the folder name? If so, we need to loosen this check. |
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// I think it's fine as it is, though. |
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$path = $this->getMultisiteDirectoryRoot($result['root']) . DIRECTORY_SEPARATOR . $result['uri']; |
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if (!is_dir($path)) { |
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return []; |
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} |
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return $result; |
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} |
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} |
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