← All changes | js/send-command.js +75 -0 3.2.5 → 4.7.0 View file →

		@@ -103,4 +103,79 @@
103	103	this.errors = [];
104	104	}.bind(this));
105	105	}
106	106	};
	107	+
	108	+/**
	109	+ * Parse JSON string, including automatically detecting unwanted extra input and skipping it
	110	+ *
	111	+ * @param {string|object} json_mix_str - JSON string which need to parse and convert to object
	112	+ *
	113	+ * @throws SyntaxError|String (including passing on what JSON.parse may throw) if a parsing error occurs.
	114	+ *
	115	+ * @return mixed parsed JSON object. Will only return if parsing is successful (otherwise, will throw)
	116	+ */
	117	+function wpo_parse_json(json_mix_str) {
	118	+ // When using wp_send_json to return the value, the format is already parsed.
	119	+ if ('object' === typeof json_mix_str) return json_mix_str;
	120	+
	121	+ // Just try it - i.e. the 'default' case where things work (which can include extra whitespace/line-feeds, and simple strings, etc.).
	122	+ try {
	123	+ var result = JSON.parse(json_mix_str);
	124	+ return result;
	125	+ } catch (e) {
	126	+ console.log("WPO: Exception when trying to parse JSON (1) - will attempt to fix/re-parse");
	127	+ console.log(json_mix_str);
	128	+ }
	129	+
	130	+ var json_start_pos = json_mix_str.indexOf('{');
	131	+ var json_last_pos = json_mix_str.lastIndexOf('}');
	132	+
	133	+ // Case where some php notice may be added after or before json string
	134	+ if (json_start_pos > -1 && json_last_pos > -1) {
	135	+ var json_str = json_mix_str.slice(json_start_pos, json_last_pos + 1);
	136	+ try {
	137	+ var parsed = JSON.parse(json_str);
	138	+ return parsed;
	139	+ } catch (e) {
	140	+ console.log("WPO: Exception when trying to parse JSON (2) - will attempt to fix/re-parse based upon bracket counting");
	141	+
	142	+ var cursor = json_start_pos;
	143	+ var open_count = 0;
	144	+ var last_character = '';
	145	+ var inside_string = false;
	146	+
	147	+ // Don't mistake this for a real JSON parser. Its aim is to improve the odds in real-world cases seen, not to arrive at universal perfection.
	148	+ while ((open_count > 0 || cursor == json_start_pos) && cursor <= json_last_pos) {
	149	+
	150	+ var current_character = json_mix_str.charAt(cursor);
	151	+
	152	+ if (!inside_string && '{' == current_character) {
	153	+ open_count++;
	154	+ } else if (!inside_string && '}' == current_character) {
	155	+ open_count--;
	156	+ } else if ('"' == current_character && '\\' != last_character) {
	157	+ inside_string = inside_string ? false : true;
	158	+ }
	159	+
	160	+ last_character = current_character;
	161	+ cursor++;
	162	+ }
	163	+
	164	+ console.log("Started at cursor="+json_start_pos+", ended at cursor="+cursor+" with result following:");
	165	+ console.log(json_mix_str.substring(json_start_pos, cursor));
	166	+
	167	+ try {
	168	+ var parsed = JSON.parse(json_mix_str.substring(json_start_pos, cursor));
	169	+ // console.log('WPO: JSON re-parse successful');
	170	+ return parsed;
	171	+ } catch (e) {
	172	+ // Throw it again, so that our function works just like JSON.parse() in its behaviour.
	173	+ throw e;
	174	+ }
	175	+
	176	+ }
	177	+ }
	178	+
	179	+ throw "WPO: could not parse the JSON";
	180	+
	181	+}