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'/types.json'; static::$types = json_decode(file_get_contents($path), true); } } /** * Reset all params * * @return void * * @since 3.2 */ protected function resetParams() { $this->content = null; $this->machineContent = null; $this->property = null; $this->fallbackProperty = null; $this->fallbackType = null; } /** * Enable or Disable the library output * * @param boolean $flag Enable or disable the library output * * @return Microdata Instance of $this * * @since 3.2 */ public function enable($flag = true) { $this->enabled = (boolean) $flag; return $this; } /** * Return 'true' if the library output is enabled * * @return boolean * * @since 3.2 */ public function isEnabled() { return $this->enabled; } /** * Set a new http://schema.org Type * * @param string $type The $Type to be setup * * @return Microdata Instance of $this * * @since 3.2 */ public function setType($type) { if (!$this->enabled) { return $this; } // Sanitize the Type $this->type = static::sanitizeType($type); // If the given $Type isn't available, fallback to 'Thing' Type if (!static::isTypeAvailable($this->type)) { $this->type = 'Thing'; } return $this; } /** * Return the current $Type name * * @return string * * @since 3.2 */ public function getType() { return $this->type; } /** * Setup a $Property * * @param string $property The Property * * @return Microdata Instance of $this * * @since 3.2 */ public function property($property) { if (!$this->enabled) { return $this; } // Sanitize the $Property $property = static::sanitizeProperty($property); // Control if the $Property exists in the given $Type and setup it, otherwise leave it 'NULL' if (static::isPropertyInType($this->type, $property)) { $this->property = $property; } return $this; } /** * Return the current $Property name * * @return string * * @since 3.2 */ public function getProperty() { return $this->property; } /** * Setup a Human content or content for the Machines * * @param string $content The human content or machine content to be used * @param string $machineContent The machine content * * @return Microdata Instance of $this * * @since 3.2 */ public function content($content, $machineContent = null) { $this->content = $content; $this->machineContent = $machineContent; return $this; } /** * Return the current $content * * @return string * * @since 3.2 */ public function getContent() { return $this->content; } /** * Return the current $machineContent * * @return string * * @since 3.3 */ public function getMachineContent() { return $this->machineContent; } /** * Setup a Fallback Type and Property * * @param string $type The Fallback Type * @param string $property The Fallback Property * * @return Microdata Instance of $this * * @since 3.2 */ public function fallback($type, $property) { if (!$this->enabled) { return $this; } // Sanitize the $Type $this->fallbackType = static::sanitizeType($type); // If the given $Type isn't available, fallback to 'Thing' Type if (!static::isTypeAvailable($this->fallbackType)) { $this->fallbackType = 'Thing'; } // Control if the $Property exist in the given $Type and setup it, otherwise leave it 'NULL' if (static::isPropertyInType($this->fallbackType, $property)) { $this->fallbackProperty = $property; } else { $this->fallbackProperty = null; } return $this; } /** * Return the current $fallbackType * * @return string * * @since 3.2 */ public function getFallbackType() { return $this->fallbackType; } /** * Return the current $fallbackProperty * * @return string * * @since 3.2 */ public function getFallbackProperty() { return $this->fallbackProperty; } /** * This function handles the display logic. * It checks if the Type, Property are available, if not check for a Fallback, * then reset all params for the next use and return the HTML. * * @param string $displayType Optional, 'inline', available options ['inline'|'span'|'div'|meta] * @param boolean $emptyOutput Return an empty string if the library output is disabled and there is a $content value * * @return string * * @since 3.2 */ public function display($displayType = '', $emptyOutput = false) { // Initialize the HTML to output $html = ($this->content !== null && !$emptyOutput) ? $this->content : ''; // Control if the library output is enabled, otherwise return the $content or an empty string if (!$this->enabled) { // Reset params $this->resetParams(); return $html; } // If the $property is wrong for the current $Type check if a Fallback is available, otherwise return an empty HTML if ($this->property) { // Process and return the HTML the way the user expects to if ($displayType) { switch ($displayType) { case 'span': $html = static::htmlSpan($html, $this->property); break; case 'div': $html = static::htmlDiv($html, $this->property); break; case 'meta': $html = ($this->machineContent !== null) ? $this->machineContent : $html; $html = static::htmlMeta($html, $this->property); break; default: // Default $displayType = 'inline' $html = static::htmlProperty($this->property); break; } } else { /* * Process and return the HTML in an automatic way, * with the $Property expected Types and display everything in the right way, * check if the $Property is 'normal', 'nested' or must be rendered in a metadata tag */ switch (static::getExpectedDisplayType($this->type, $this->property)) { case 'nested': // Retrieve the expected 'nested' Type of the $Property $nestedType = static::getExpectedTypes($this->type, $this->property); $nestedProperty = ''; // If there is a Fallback Type then probably it could be the expectedType if (in_array($this->fallbackType, $nestedType)) { $nestedType = $this->fallbackType; if ($this->fallbackProperty) { $nestedProperty = $this->fallbackProperty; } } else { $nestedType = $nestedType[0]; } // Check if a $content is available, otherwise fallback to an 'inline' display type if ($this->content !== null) { if ($nestedProperty) { $html = static::htmlSpan( $this->content, $nestedProperty ); } $html = static::htmlSpan( $html, $this->property, $nestedType, true ); } else { $html = static::htmlProperty($this->property) . ' ' . static::htmlScope($nestedType); if ($nestedProperty) { $html .= ' ' . static::htmlProperty($nestedProperty); } } break; case 'meta': // Check if a $content is available, otherwise fallback to an 'inline' display type if ($this->content !== null) { $html = ($this->machineContent !== null) ? $this->machineContent : $this->content; $html = static::htmlMeta($html, $this->property) . $this->content; } else { $html = static::htmlProperty($this->property); } break; default: /* * Default expected display type = 'normal' * Check if a $content is available, * otherwise fallback to an 'inline' display type */ if ($this->content !== null) { $html = static::htmlSpan($this->content, $this->property); } else { $html = static::htmlProperty($this->property); } break; } } } elseif ($this->fallbackProperty) { // Process and return the HTML the way the user expects to if ($displayType) { switch ($displayType) { case 'span': $html = static::htmlSpan($html, $this->fallbackProperty, $this->fallbackType); break; case 'div': $html = static::htmlDiv($html, $this->fallbackProperty, $this->fallbackType); break; case 'meta': $html = ($this->machineContent !== null) ? $this->machineContent : $html; $html = static::htmlMeta($html, $this->fallbackProperty, $this->fallbackType); break; default: // Default $displayType = 'inline' $html = static::htmlScope($this->fallbackType) . ' ' . static::htmlProperty($this->fallbackProperty); break; } } else { /* * Process and return the HTML in an automatic way, * with the $Property expected Types an display everything in the right way, * check if the Property is 'nested' or must be rendered in a metadata tag */ switch (static::getExpectedDisplayType($this->fallbackType, $this->fallbackProperty)) { case 'meta': // Check if a $content is available, otherwise fallback to an 'inline' display Type if ($this->content !== null) { $html = ($this->machineContent !== null) ? $this->machineContent : $this->content; $html = static::htmlMeta($html, $this->fallbackProperty, $this->fallbackType); } else { $html = static::htmlScope($this->fallbackType) . ' ' . static::htmlProperty($this->fallbackProperty); } break; default: /* * Default expected display type = 'normal' * Check if a $content is available, * otherwise fallback to an 'inline' display Type */ if ($this->content !== null) { $html = static::htmlSpan($this->content, $this->fallbackProperty); $html = static::htmlSpan($html, '', $this->fallbackType); } else { $html = static::htmlScope($this->fallbackType) . ' ' . static::htmlProperty($this->fallbackProperty); } break; } } } elseif (!$this->fallbackProperty && $this->fallbackType !== null) { $html = static::htmlScope($this->fallbackType); } // Reset params $this->resetParams(); return $html; } /** * Return the HTML of the current Scope * * @return string * * @since 3.2 */ public function displayScope() { // Control if the library output is enabled, otherwise return the $content or empty string if (!$this->enabled) { return ''; } return static::htmlScope($this->type); } /** * Return the sanitized $Type * * @param string $type The Type to sanitize * * @return string * * @since 3.2 */ public static function sanitizeType($type) { return ucfirst(trim($type)); } /** * Return the sanitized $Property * * @param string $property The Property to sanitize * * @return string * * @since 3.2 */ public static function sanitizeProperty($property) { return lcfirst(trim($property)); } /** * Return an array with all available Types and Properties from the http://schema.org vocabulary * * @return array * * @since 3.2 */ public static function getTypes() { static::loadTypes(); return static::$types; } /** * Return an array with all available Types from the http://schema.org vocabulary * * @return array * * @since 3.2 */ public static function getAvailableTypes() { static::loadTypes(); return array_keys(static::$types); } /** * Return the expected Types of the given Property * * @param string $type The Type to process * @param string $property The Property to process * * @return array * * @since 3.2 */ public static function getExpectedTypes($type, $property) { static::loadTypes(); $tmp = static::$types[$type]['properties']; // Check if the $Property is in the $Type if (isset($tmp[$property])) { return $tmp[$property]['expectedTypes']; } // Check if the $Property is inherit $extendedType = static::$types[$type]['extends']; // Recursive if (!empty($extendedType)) { return static::getExpectedTypes($extendedType, $property); } return array(); } /** * Return the expected display type: [normal|nested|meta] * In which way to display the Property: * normal -> itemprop="name" * nested -> itemprop="director" itemscope itemtype="https://schema.org/Person" * meta -> `` * * @param string $type The Type where to find the Property * @param string $property The Property to process * * @return string * * @since 3.2 */ protected static function getExpectedDisplayType($type, $property) { $expectedTypes = static::getExpectedTypes($type, $property); // Retrieve the first expected type $type = $expectedTypes[0]; // Check if it's a 'meta' display if ($type === 'Date' || $type === 'DateTime' || $property === 'interactionCount') { return 'meta'; } // Check if it's a 'normal' display if ($type === 'Text' || $type === 'URL' || $type === 'Boolean' || $type === 'Number') { return 'normal'; } // Otherwise it's a 'nested' display return 'nested'; } /** * Recursive function, control if the given Type has the given Property * * @param string $type The Type where to check * @param string $property The Property to check * * @return boolean * * @since 3.2 */ public static function isPropertyInType($type, $property) { if (!static::isTypeAvailable($type)) { return false; } // Control if the $Property exists, and return 'true' if (array_key_exists($property, static::$types[$type]['properties'])) { return true; } // Recursive: Check if the $Property is inherit $extendedType = static::$types[$type]['extends']; if (!empty($extendedType)) { return static::isPropertyInType($extendedType, $property); } return false; } /** * Control if the given Type class is available * * @param string $type The Type to check * * @return boolean * * @since 3.2 */ public static function isTypeAvailable($type) { static::loadTypes(); return (array_key_exists($type, static::$types)) ? true : false; } /** * Return Microdata semantics in a `` tag with content for machines. * * @param string $content The machine content to display * @param string $property The Property * @param string $scope Optional, the Type scope to display * @param boolean $invert Optional, default = false, invert the $scope with the $property * * @return string * * @since 3.2 */ public static function htmlMeta($content, $property, $scope = '', $invert = false) { return static::htmlTag('meta', $content, $property, $scope, $invert); } /** * Return Microdata semantics in a `` tag. * * @param string $content The human content * @param string $property Optional, the human content to display * @param string $scope Optional, the Type scope to display * @param boolean $invert Optional, default = false, invert the $scope with the $property * * @return string * * @since 3.2 */ public static function htmlSpan($content, $property = '', $scope = '', $invert = false) { return static::htmlTag('span', $content, $property, $scope, $invert); } /** * Return Microdata semantics in a `
` tag. * * @param string $content The human content * @param string $property Optional, the human content to display * @param string $scope Optional, the Type scope to display * @param boolean $invert Optional, default = false, invert the $scope with the $property * * @return string * * @since 3.2 */ public static function htmlDiv($content, $property = '', $scope = '', $invert = false) { return static::htmlTag('div', $content, $property, $scope, $invert); } /** * Return Microdata semantics in a specified tag. * * @param string $tag The HTML tag * @param string $content The human content * @param string $property Optional, the human content to display * @param string $scope Optional, the Type scope to display * @param boolean $invert Optional, default = false, invert the $scope with the $property * * @return string * * @since 3.3 */ public static function htmlTag($tag, $content, $property = '', $scope = '', $invert = false) { // Control if the $Property has already the 'itemprop' prefix if (!empty($property) && stripos($property, 'itemprop') !== 0) { $property = static::htmlProperty($property); } // Control if the $Scope have already the 'itemscope' prefix if (!empty($scope) && stripos($scope, 'itemscope') !== 0) { $scope = static::htmlScope($scope); } // Depending on the case, the $scope must precede the $property, or otherwise if ($invert) { $tmp = implode(' ', array($property, $scope)); } else { $tmp = implode(' ', array($scope, $property)); } $tmp = trim($tmp); $tmp = ($tmp) ? ' ' . $tmp : ''; // Control if it is an empty element without a closing tag if ($tag === 'meta') { return ""; } return '<' . $tag . $tmp . '>' . $content . ''; } /** * Return the HTML Scope * * @param string $scope The Scope to process * * @return string * * @since 3.2 */ public static function htmlScope($scope) { return "itemscope itemtype='https://schema.org/" . static::sanitizeType($scope) . "'"; } /** * Return the HTML Property * * @param string $property The Property to process * * @return string * * @since 3.2 */ public static function htmlProperty($property) { return "itemprop='$property'"; } }