Free regular expression tutorial software for linux

Python Regular Expression Builder is a wxPython GUI to the re python module; it will speed up the development of Python regular expression (similar to PCRE).
The GUI is simple and features 3 parts:
- A text box where the text to be analyzed is displayed
- A text box where the regular expression to be applied is displayed
- A tree control where the results are displayed
When one of the two textboxes change the regex is compiled and applied. Errors in the regex are shown in a statusbar.
Pyreb ships with a simple XMLRPC server that can be used to control pyreb from an external application. It must be started using the
Tools/Start XMLRPC Server
menu item. The XMLRPC server understands 4 methods:
- Pyreb.setText(Txt)
- Pyreb.getText()
- Pyreb.setRegex(Txt)
- Pyreb.getRegex()
The first two get/set the text in the uppermost section; the last two get/set the regex in the medium section. Once the text/regex is set the match is recalculated and shown, as it would happen in interactive usage.
A sample session:
>>> import xmlrpclib
>>> a = xmlrpclib.ServerProxy("http://localhost:17787")
>>> a.system.listMethods()
[Pyreb.getRegex, Pyreb.getText, Pyreb.setRegex, Pyreb.setText, system.listMethods, system.methodHelp, system.methodSignature]
>>> a.Pyreb.setText("abc")
setText
>>> a.Pyreb.getText()
abc
>>> a.Pyreb.setRegex(a?(bc){1,})
setRegex
These commands set the text abc in the "Text to analyze" edit box, the regex in the "Regex to apply" edit box and recomputes the match, shown in the lower "Results" tree.

STX Expression Parser provides a C++ framework, which can process user-specified expression strings containing program-specific variables. It can be integrated into applications to allow user-customized data selection and filtering.

The expresssion strings are intuitive SQL-like WHERE-clauses and can contain arbitrarily complex arithmetic. At the same time the parse tree evaluation speed is guaranteed to be fast enough to safely iterate over larger data sets. The framework uses the Boost.Spirit parser library combined with a versatile custom scalar value class.

The expression parser can process arbitrarily complex arithmetic expressions like those seen below. To access application-defined data, functions and variables may be included in the expression. An expression can be used as a boolean filter by using comparison and logic operators.

6 + 3 * 12
(a - 28) * (int)(e + 0.4 * 2.5 / (PI() - EXP(-0.644) * 4))
6 * 9 == 42
a >= 5 OR (42<<less