gnu.regexp TODO --------------- These are items that have yet to be implemented or are part of the general wish list for gnu.regexp. You can contribute to this program and get your name permanently embedded in the distribution if you care to take on any of these tasks. See the contact info in the README. Bugs / Problems with the engine: Using a ')' in a character class which is within a () grouping triggers an REException while parsing. Workaround is to put a backslash in front of the literal ')'. The leftmost longest rule is not strictly adhered to. For example, the expression ".*?z?", given input "xyz", should match the whole string, not the empty string. Missing operators: [.symbol.] -- collating symbol (POSIX) [=class=] -- equivalence class (POSIX) I18n support: Some POSIX char classes ([:alpha:]) are locale sensitive, others need work Ranges (e.g. [a-z]) should be locale sensitive Should use collation elements, not chars, for things like Spanish "ll" REG_ICASE is not very friendly with Cyrillic and other locales. Messages used for exceptions should be localizable. Performance: Engine speed needs some major work. Miscellaneous/Requests for Enhancements: "Free software needs free manuals" -- you heard the man... Some features have been added to Perl between 5.0 and 5.6. Should the PERL5 syntax support these, or should a new syntax be added? Which should be the default? There could be a flag to enforce strict POSIX leftmost-longest matching. gnu.regexp.util.Tests should be fleshed out, or perhaps changed to use JUnit. It might make sense for getMatchEnumeration() to optionally return matches in reverse order, so that the indices were valid all the way through, even if you were doing text replacement on the way. Support J2ME CLDC limited APIs as optional target: Should be straightforward, but need to avoid use of REFilter(InputStream|Reader) classes, as well as all references to java.io.Serializable. RESyntax needs to replace java.util.BitSet with a home-grown version. Other than that, it should work. May want to package separately (e.g. gnu.regexp-1.0.8-j2me-cldc.jar). Add support for named subgroups: "(?P<name>...)" (match) and "(?P=name)" (recall, like \n). Add the ability to get at an enumeration of names. Support associative-array style interface that allows users to define their own substitution behavior on matches. Perhaps a Substitutor interface with String substitute(REMatch match), and then RE.substituteAll(input, Substitutor) variations. Support excluded subrange syntax as in Unicode recommendations, e.g. "[a-z-[m-p]]" being a through z except for m through p. Add a split() method. Provide a build.xml file for Ant.
