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wp-content/plugins/gravitysmtp/includes/utils/class-recipient-parser.php

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+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Utils;
+
+class Recipient_Parser {
+
+	public function parse( $to ) {
+		// Protect against double-parsing.
+		if ( is_a( $to, Recipient_Collection::class ) ) {
+			return $to;
+		}
+
+		if ( is_array( $to ) && isset( $to['email'] ) ) {
+			$to = array( $to );
+		}
+
+		if ( is_string( $to ) ) {
+			$to = array_filter( explode( ',', $to ) );
+		}
+
+		$collection = new Recipient_Collection();
+
+		if ( ! is_array( $to ) ) {
+			$to = array();
+		}
+
+		array_walk( $to, function ( $recipient ) use ( $collection ) {
+			if ( is_string( $recipient ) ) {
+				$collection->add( $this->get_recipient_from_string( $recipient ) );
+			}
+
+			if ( isset( $recipient['email'] ) ) {
+				$name = isset( $recipient['name'] ) ? $recipient['name'] : '';
+				$collection->add( new Recipient( $recipient['email'], $name ) );
+			}
+		} );
+
+		return $collection;
+	}
+
+	public function get_email_counts( $extra ) {
+		$values = array(
+			'to'  => isset( $extra['to'] ) ? $extra['to'] : '',
+			'cc'  => isset( $extra['headers']['cc'] ) ? $extra['headers']['cc'] : '',
+			'bcc' => isset( $extra['headers']['bcc'] ) ? $extra['headers']['bcc'] : ''
+		);
+
+		$count = 0;
+
+		foreach ( $values as $recipients ) {
+			$recipients = $this->parse( $recipients );
+			$count      += $recipients->count();
+		}
+
+		return $count;
+	}
+
+	private function get_recipient_from_string( $string ) {
+		if ( strpos( $string, '<' ) === false ) {
+			return new Recipient( trim( $string ), '' );
+		}
+
+		// Email seems to be in RFC5322 Mailbox format
+		preg_match( '/([^<]*)<([^>]*)>/', $string, $email_data );
+
+		return new Recipient( $email_data[2], trim( $email_data[1], '" ' ) );
+	}
+}