sedadgn commented on a change in pull request #5458:
URL: https://github.com/apache/nifi/pull/5458#discussion_r736481331
##########
File path:
nifi-commons/nifi-properties/src/main/java/org/apache/nifi/util/StringUtils.java
##########
@@ -510,4 +514,20 @@ public static String toTitleCase(String input) {
.map(word -> Character.toTitleCase(word.charAt(0)) +
word.substring(1))
.collect(Collectors.joining(" "));
}
+
+ public static String escapeString(String str, char escapeChar, char
charToEscape) {
+ if (str == null) {
Review comment:
The idea was, that escape followed by unescape always produces the
original string. E.g. unescape(escape("a,b" )) == "a,b". If the original string
is already escaped, then the end result is an escaped string. E.g.
unescape(escape("a,\\,b" )) == "a,\,b". That would not work if we perform the
check you suggested.
We can add the check if you want, to. For our specific problems, it would
work either way.
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