Two new static methods in StringUtils: camelCaseToUnderscoreSeparated(String)
and underscoreSeparatedToCamelCase(String)
------------------------------------------------------------------------------------------------------------------------
Key: LANG-415
URL: https://issues.apache.org/jira/browse/LANG-415
Project: Commons Lang
Issue Type: New Feature
Affects Versions: 2.3
Reporter: Grzegorz Błaszczyk
Fix For: 2.4
Index: /CommonsLang/src/java/org/apache/commons/lang/StringUtils.java
===================================================================
--- /CommonsLang/src/java/org/apache/commons/lang/StringUtils.java
(revision 633306)
+++ /CommonsLang/src/java/org/apache/commons/lang/StringUtils.java
(working copy)
@@ -2782,6 +2782,60 @@
list.add(new String(c, tokenStart, c.length - tokenStart));
return (String[]) list.toArray(new String[list.size()]);
}
+ /**
+ * Changes a camelCase string value to underscore separated
+ * @param input
+ * @param toLowerCase - if output string should be lower case
+ * @return underscore separated string
+ */
+ public static String camelCaseToUnderscoreSeparated(String input,
+ boolean toLowerCase) {
+ StringBuilder s = new StringBuilder();
+ if (input == null) {
+ return "";
+ }
+ int length = input.length();
+ for (int i = 0; i < length; i++) {
+ char ch = input.charAt(i);
+ if (Character.isUpperCase(ch) && i > 0) {
+ s.append("_");
+ }
+ if (ch == '.') {
+ s.append("_");
+ } else {
+ s.append(toLowerCase ?
Character.toLowerCase(ch) : Character
+ .toUpperCase(ch));
+ }
+ }
+ return s.toString();
+ }
+
+ /**
+ * Changes a underscore separated string value to camelCase
+ * @param input
+ * @return camelScape string
+ */
+ public static String underscoreSeparatedToCamelCase(String input) {
+ StringBuilder s = new StringBuilder();
+ if (input == null) {
+ return "";
+ }
+ int length = input.length();
+ boolean upperCase = false;
+
+ for (int i = 0; i < length; i++) {
+ char ch = input.charAt(i);
+ if (ch == '_') {
+ upperCase = true;
+ } else if (upperCase) {
+ s.append(Character.toUpperCase(ch));
+ upperCase = false;
+ } else {
+ s.append(ch);
+ }
+ }
+ return s.toString();
+ }
// Joining
//-----------------------------------------------------------------------
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
