Github user bdesert commented on a diff in the pull request:
https://github.com/apache/nifi/pull/3183#discussion_r236789857
--- Diff:
nifi-commons/nifi-record-path/src/main/java/org/apache/nifi/record/path/util/RecordPathUtils.java
---
@@ -39,4 +39,44 @@ public static String getFirstStringValue(final
RecordPathSegment segment, final
return stringValue;
}
+
+ public static String unescapeBackslash(String value) {
+ if (value == null || value.isEmpty()) {
+ return value;
+ }
+ // need to escape characters after backslashes
+ final StringBuilder sb = new StringBuilder();
+ boolean lastCharIsBackslash = false;
+ for (int i = 0; i < value.length(); i++) {
+ final char c = value.charAt(i);
+
--- End diff --
Added to the PR description:
EL References: StringLiteralEvaluator. Special characters (backslash
sequences) will be handled for any string literal value, and will affect the
way regex and escaped chars must be defined. Same logic has been added to
RecordPathUtils.unescapeBackslash.
---
