ppkarwasz commented on code in PR #781:
URL: https://github.com/apache/commons-io/pull/781#discussion_r2328365095
##########
src/main/java/org/apache/commons/io/FileSystem.java:
##########
@@ -530,4 +623,76 @@ CharSequence trimExtension(final CharSequence cs) {
final int index = indexOf(cs, '.', 0);
return index < 0 ? cs : cs.subSequence(0, index);
}
+
+ private boolean isLegalFileLength(final CharSequence candidate, final
Charset charset) {
+ if (candidate == null || candidate.length() == 0) {
+ return false;
+ }
+ if (lengthUnit == LengthUnit.CHARS) {
+ return candidate.length() <= getMaxFileNameLength();
+ }
+ final CharsetEncoder encoder = charset.newEncoder();
+ try {
+ final ByteBuffer buffer =
encoder.encode(CharBuffer.wrap(candidate));
+ return buffer.remaining() <= getMaxFileNameLength();
+ } catch (CharacterCodingException e) {
+ // If we can't encode, it's not legal
+ return false;
+ }
+ }
+
+ CharSequence truncateFileName(final CharSequence candidate, final Charset
charset) {
+ final int maxFileNameLength = getMaxFileNameLength();
+ // Character-based limit: simple substring if needed.
+ if (lengthUnit == LengthUnit.CHARS) {
Review Comment:
Same as above, fixed in
https://github.com/apache/commons-io/pull/781/commits/9a1e9e41df93bf2e2c442637e9c5ba2c78d7dc72
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