File "class-field-guesser.php"

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<?php

/**
 * Class MC4WP_Field_Guesser
 *
 * @access private
 * @ignore
 */
class MC4WP_Field_Guesser {


	/**
	 * @var array
	 */
	protected $fields;

	/**
	 * @param array $fields
	 */
	public function __construct( array $fields ) {
		$fields       = array_change_key_case( $fields, CASE_UPPER );
		$this->fields = $fields;
	}

	/**
	 * Get all data which is namespaced with a given namespace
	 *
	 * @param string $namespace
	 *
	 * @return array
	 */
	public function namespaced( $namespace = 'mc4wp-' ) {
		$prefix = strtoupper( $namespace );
		$return = array();
		$length = strlen( $prefix );

		foreach ( $this->fields as $key => $value ) {
			if ( strpos( $key, $prefix ) === 0 ) {
				$new_key            = substr( $key, $length );
				$return[ $new_key ] = $value;
			}
		}

		return $return;
	}

	/**
	 * Guess values for the following fields
	 *  - EMAIL
	 *  - NAME
	 *  - FNAME
	 *  - LNAME
	 *
	 * @return array
	 */
	public function guessed() {
		$guessed = array();

		foreach ( $this->fields as $field => $value ) {

			// transform value into array to support 1-level arrays
			$sub_fields = is_array( $value ) ? $value : array( $value );

			foreach ( $sub_fields as $sub_field_value ) {

				// poor man's urldecode, to get Enfold theme's contact element to work.
				$sub_field_value = str_replace( '%40', '@', $sub_field_value );

				// is this an email value? if so, assume it's the EMAIL field
				if ( empty( $guessed['EMAIL'] ) && is_string( $sub_field_value ) && is_email( $sub_field_value ) ) {
					$guessed['EMAIL'] = $sub_field_value;
					continue 2;
				}

				// remove special characters from field name
				$simple_key = str_replace( array( '-', '_', ' ' ), '', $field );

				if ( empty( $guessed['FNAME'] ) && $this->string_contains( $simple_key, array( 'FIRSTNAME', 'FNAME', 'GIVENNAME', 'FORENAME' ) ) ) {
					// find first name field
					$guessed['FNAME'] = $sub_field_value;
				} elseif ( empty( $guessed['LNAME'] ) && $this->string_contains( $simple_key, array( 'LASTNAME', 'LNAME', 'SURNAME', 'FAMILYNAME' ) ) ) {
					// find last name field
					$guessed['LNAME'] = $sub_field_value;
				} elseif ( empty( $guessed['NAME'] ) && $this->string_contains( $simple_key, 'NAME' ) ) {
					// find name field
					$guessed['NAME'] = $sub_field_value;
				}
			}
		}

		return $guessed;
	}

	/**
	 * @param $methods
	 *
	 * @return array
	 */
	public function combine( array $methods ) {
		$combined = array();

		foreach ( $methods as $method ) {
			if ( method_exists( $this, $method ) ) {
				$combined = array_merge( $combined, call_user_func( array( $this, $method ) ) );
			}
		}

		return $combined;
	}

	/**
	 * @param string $haystack
	 * @param string|array $needles
	 *
	 * @return bool
	 */
	private function string_contains( $haystack, $needles ) {
		if ( ! is_array( $needles ) ) {
			$needles = array( $needles );
		}

		foreach ( $needles as $needle ) {
			if ( strpos( $haystack, $needle ) !== false ) {
				return true;
			}
		}

		return false;
	}
}