generated from Nodarx/template
139 lines
3.7 KiB
PHP
139 lines
3.7 KiB
PHP
<?php
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declare(strict_types=1);
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namespace KTXM\ProviderImap\Client\Command;
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use KTXM\ProviderImap\Client\ImapException;
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final class StatusResponseParser
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{
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/**
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* @return array{0: string, 1: array<string, int>}
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*/
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public function parse(string $payload): array
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{
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$payload = trim($payload);
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$offset = 0;
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$nameToken = $this->readToken($payload, $offset);
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$statusToken = $this->readToken($payload, $offset);
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if ($nameToken === null || $statusToken === null) {
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throw new ImapException('Unable to parse STATUS response payload: ' . $payload);
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}
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$mailbox = $this->decodeAtom($nameToken);
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if ($mailbox === null || $mailbox === '') {
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throw new ImapException('STATUS response is missing a mailbox name: ' . $payload);
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}
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return [$mailbox, $this->parseItems($statusToken, $payload)];
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}
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/**
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* @return array<string, int>
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*/
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private function parseItems(string $statusToken, string $payload): array
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{
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$statusToken = trim($statusToken);
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if (!str_starts_with($statusToken, '(') || !str_ends_with($statusToken, ')')) {
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throw new ImapException('Invalid STATUS data payload: ' . $payload);
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}
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$items = trim(substr($statusToken, 1, -1));
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if ($items === '') {
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return [];
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}
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$tokens = preg_split('/\s+/', $items) ?: [];
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if (count($tokens) % 2 !== 0) {
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throw new ImapException('Malformed STATUS item list: ' . $payload);
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}
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$status = [];
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for ($index = 0; $index < count($tokens); $index += 2) {
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$item = strtoupper($tokens[$index]);
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$value = $tokens[$index + 1];
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if (!preg_match('/^\d+$/', $value)) {
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throw new ImapException('STATUS item value must be numeric: ' . $payload);
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}
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$status[$item] = (int) $value;
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}
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return $status;
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}
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private function readToken(string $payload, int &$offset): ?string
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{
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$length = strlen($payload);
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while ($offset < $length && ctype_space($payload[$offset])) {
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$offset++;
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}
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if ($offset >= $length) {
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return null;
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}
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if ($payload[$offset] === '(') {
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$end = strpos($payload, ')', $offset);
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if ($end === false) {
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throw new ImapException('Unterminated STATUS item block: ' . $payload);
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}
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$token = substr($payload, $offset, $end - $offset + 1);
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$offset = $end + 1;
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return $token;
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}
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if ($payload[$offset] === '"') {
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$start = $offset;
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$offset++;
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while ($offset < $length) {
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if ($payload[$offset] === '\\') {
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$offset += 2;
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continue;
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}
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if ($payload[$offset] === '"') {
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$offset++;
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return substr($payload, $start, $offset - $start);
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}
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$offset++;
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}
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throw new ImapException('Unterminated quoted STATUS token: ' . $payload);
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}
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$start = $offset;
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while ($offset < $length && !ctype_space($payload[$offset])) {
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$offset++;
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}
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return substr($payload, $start, $offset - $start);
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}
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private function decodeAtom(string $value): ?string
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{
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$value = trim($value);
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if (strtoupper($value) === 'NIL') {
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return null;
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}
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if (str_starts_with($value, '"') && str_ends_with($value, '"')) {
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return stripcslashes(substr($value, 1, -1));
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}
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return $value;
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}
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} |