Don't use regex to match quoted variable names

Author: sovdeeth

src/main/java/ch/njol/skript/variables/FlatFileStorage.java

@@ -531,7 +531,7 @@ static byte[] decode(String hex) {
 	/**
 	 * A regex pattern of a line in a CSV file.
 	 */
-	private static final Pattern CSV_LINE_PATTERN = Pattern.compile("(?<=^|,)\\s*([^\",]*|\"([^\"]|\"\")*\")\\s*(,|$)");
+		private static final Pattern CSV_LINE_PATTERN = Pattern.compile("(?<=^|,)\\s*([^\",]*|\"([^\"]|\"\")*\")\\s*(,|$)");
 
 	/**
 	 * Splits the given CSV line into its values.
@@ -543,12 +543,29 @@ static byte[] decode(String hex) {
 	 */
 	@Nullable
 	static String[] splitCSV(String line) {
-		Matcher matcher = CSV_LINE_PATTERN.matcher(line);
+
 
 		int lastEnd = 0;
 		ArrayList<String> result = new ArrayList<>();
 
-		while (matcher.find()) {
+		// avoid regex matching quoted var names
+		if (line.startsWith("\"")) {
+			// find closing quote '",'
+			int start = 0;
+			while (start < line.length() && (start == 0 || line.charAt(start - 1) == '"')) {
+				start = line.indexOf("\",", start + 2);
+				if (start == -1) {
+					// No closing quote found
+					return null;
+				}
+			}
+			result.add(line.substring(1, start).replace("\"\"", "\""));
+			lastEnd = start + 2;
+		}
+
+		Matcher matcher = CSV_LINE_PATTERN.matcher(line);
+
+		while (matcher.find(lastEnd)) {
 			if (lastEnd != matcher.start())
 				return null; // other stuff inbetween finds