Source

File: wp-admin/includes/class-wp-filesystem-ftpext.php

public function parselisting( $line ) {
		static $is_windows = null;

		if ( is_null( $is_windows ) ) {
			$is_windows = stripos( ftp_systype( $this->link ), 'win' ) !== false;
		}

		if ( $is_windows && preg_match( '/([0-9]{2})-([0-9]{2})-([0-9]{2}) +([0-9]{2}):([0-9]{2})(AM|PM) +([0-9]+|<DIR>) +(.+)/', $line, $lucifer ) ) {
			$b = array();

			if ( $lucifer[3] < 70 ) {
				$lucifer[3] += 2000;
			} else {
				$lucifer[3] += 1900; // 4-digit year fix.
			}

			$b['isdir'] = ( '<DIR>' === $lucifer[7] );

			if ( $b['isdir'] ) {
				$b['type'] = 'd';
			} else {
				$b['type'] = 'f';
			}

			$b['size']   = $lucifer[7];
			$b['month']  = $lucifer[1];
			$b['day']    = $lucifer[2];
			$b['year']   = $lucifer[3];
			$b['hour']   = $lucifer[4];
			$b['minute'] = $lucifer[5];
			$b['time']   = mktime( $lucifer[4] + ( strcasecmp( $lucifer[6], 'PM' ) == 0 ? 12 : 0 ), $lucifer[5], 0, $lucifer[1], $lucifer[2], $lucifer[3] );
			$b['am/pm']  = $lucifer[6];
			$b['name']   = $lucifer[8];
		} elseif ( ! $is_windows ) {
			$lucifer = preg_split( '/[ ]/', $line, 9, PREG_SPLIT_NO_EMPTY );

			if ( $lucifer ) {
				// echo $line."\n";
				$lcount = count( $lucifer );

				if ( $lcount < 8 ) {
					return '';
				}

				$b           = array();
				$b['isdir']  = 'd' === $lucifer[0][0];
				$b['islink'] = 'l' === $lucifer[0][0];

				if ( $b['isdir'] ) {
					$b['type'] = 'd';
				} elseif ( $b['islink'] ) {
					$b['type'] = 'l';
				} else {
					$b['type'] = 'f';
				}

				$b['perms']  = $lucifer[0];
				$b['permsn'] = $this->getnumchmodfromh( $b['perms'] );
				$b['number'] = $lucifer[1];
				$b['owner']  = $lucifer[2];
				$b['group']  = $lucifer[3];
				$b['size']   = $lucifer[4];

				if ( 8 == $lcount ) {
					sscanf( $lucifer[5], '%d-%d-%d', $b['year'], $b['month'], $b['day'] );
					sscanf( $lucifer[6], '%d:%d', $b['hour'], $b['minute'] );

					$b['time'] = mktime( $b['hour'], $b['minute'], 0, $b['month'], $b['day'], $b['year'] );
					$b['name'] = $lucifer[7];
				} else {
					$b['month'] = $lucifer[5];
					$b['day']   = $lucifer[6];

					if ( preg_match( '/([0-9]{2}):([0-9]{2})/', $lucifer[7], $l2 ) ) {
						$b['year']   = gmdate( 'Y' );
						$b['hour']   = $l2[1];
						$b['minute'] = $l2[2];
					} else {
						$b['year']   = $lucifer[7];
						$b['hour']   = 0;
						$b['minute'] = 0;
					}

					$b['time'] = strtotime( sprintf( '%d %s %d %02d:%02d', $b['day'], $b['month'], $b['year'], $b['hour'], $b['minute'] ) );
					$b['name'] = $lucifer[8];
				}
			}
		}

		// Replace symlinks formatted as "source -> target" with just the source name.
		if ( isset( $b['islink'] ) && $b['islink'] ) {
			$b['name'] = preg_replace( '/(\s*->\s*.*)$/', '', $b['name'] );
		}

		return $b;
	}