pjfanning commented on code in PR #967:
URL: https://github.com/apache/poi/pull/967#discussion_r2608037655
##########
poi/src/main/java/org/apache/poi/hssf/usermodel/HSSFWorkbook.java:
##########
@@ -1061,11 +1061,30 @@ public HSSFSheet getSheetAt(int index) {
* If there are multiple matches, the first sheet from the list
* of sheets is returned.
*
+ * <p>
+ * Note that Excel limits sheet names to 31 characters. If you try to
look up
+ * a sheet by a name longer than that, a warning will be logged, since
+ * such a sheet cannot exist in Excel and the lookup will likely
return {@code null}.
+ * </p>
+ *
* @param name of the sheet
* @return HSSFSheet with the name provided or {@code null} if it does not
exist
*/
@Override
public HSSFSheet getSheet(String name) {
+
+ if (name == null || name.isEmpty()) {
+ return null;
+ }
+
+ if(name.length() > MAX_SENSITIVE_SHEET_NAME_LEN) {
+ LOGGER.atWarn().log(
Review Comment:
the trunk branch is targeted at 6.0.0 - allowing breaking changes
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