← All changes | includes/admin/importers/class-snapshot-store.php +42 -0 2.0.2 → 2.13.0 View file →

		@@ -32,8 +32,50 @@
32	32	*/
33	33	private const OPTION_PREFIX = 'thinkrank_snapshot_';
34	34
35	35	/**
	36	+ * Width of `wp_options.option_name`, VARCHAR(191) since WordPress 4.4 cut it
	37	+ * to fit a utf8mb4 index.
	38	+ *
	39	+ * @var int
	40	+ */
	41	+ private const OPTION_NAME_MAX = 191;
	42	+
	43	+ /**
	44	+ * Digits held back for the chunk page number in a key. Ten is far past what
	45	+ * any real snapshot pages to; it costs ten characters of type slug.
	46	+ *
	47	+ * @var int
	48	+ */
	49	+ private const PAGE_DIGITS = 10;
	50	+
	51	+ /**
	52	+ * Longest type slug whose chunk key still fits `option_name`.
	53	+ *
	54	+ * MySQL's default (non-strict) mode truncates an over-long option name on
	55	+ * write instead of refusing it, and the truncated row is then invisible to
	56	+ * the read, which looks the full key up. In-request option caching hides
	57	+ * that until the next request, when read_chunk() starts returning null for
	58	+ * records the manifest still counts — a snapshot that advertises data it
	59	+ * cannot produce. Callers taking a type slug from an uploaded file must
	60	+ * check it against this before storing anything under it.
	61	+ *
	62	+ * @since 2.12.0
	63	+ *
	64	+ * @param string $plugin Plugin slug the chunks are filed under.
	65	+ * @return int Maximum type slug length, in characters.
	66	+ */
	67	+ public static function max_type_length(string $plugin): int {
	68	+ // The key is OPTION_PREFIX . "{$plugin}_{$type}_chunk_{$page}".
	69	+ $overhead = strlen(self::OPTION_PREFIX)
	70	+ + strlen($plugin)
	71	+ + strlen('__chunk_')
	72	+ + self::PAGE_DIGITS;
	73	+
	74	+ return max(1, self::OPTION_NAME_MAX - $overhead);
	75	+ }
	76	+
	77	+ /**
36	78	* Write a chunk of snapshot data
37	79	*
38	80	* @param string $plugin Plugin slug (e.g., 'yoast')
39	81	* @param string $type Data type (e.g., 'postmeta')