FreeBasic source code beautyfier and Geany filter, forum
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Welcome to project FBeauty, a FreeBASIC source code beautyfier. It can get started

  • from the command line or

  • as a Geany IDE custom command

and then

  • parses source code,

  • identifies the keywords and

  • formats them in consistent letter cases (UPPER CASE, lower case, CamelCase or custom).

Comments and string literals stay unchanged. The package contains the source code of the tool, to be compiled with the FreeBASIC compiler.

Find further information at the forum page


Copyright © 2011-2015 by DTJF (Thomas{ At ]Freiherr{ at }gmx[ dOt ]net)

The source code of this bundle is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation.

The program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this package; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110- 1301, USA. For further details please refer to:


The programm acts like a filter, identyfying FreeBASIC keywords in the input stream (StdIn) and by default replaces them by their upper-case equivalents in the output stream (StdOut). All other words and characters get passed unchanged. The filter neither works in comments nor in strings.


The program is designed for use in Geany, an FreeBASIC-IDE for LINUX and win. As a compiled binary it can be added to Geany as a sent text custom command. Just go to menu Edit -> Format -> Send text -> Set Custom Commands and click in that dialog on Add to get a new text entry. Then type the command for calling the FBeauty binary. From now on, the current selection can get send to FBeauty and the filtered output of FBeauty will be used to replace the current selection.

Further Usage

FBeauty can also be used at the command line by reading the input from a file. E. g. on LINUX type ./FBeauty < Input.txt > Output.bas to read the context form file Input.txt and write the filtered output to file Output.bas.

The filter features of FBeauty.bas may get customized in the source code for personal purposes.

Since version 0.0.2 different keyword cases can be choosen by command line options:

Option Result
upper case keywords (default)
-l lower case keywords
-c capitalized keywords
-i individual keywords (as defined in source code)

Special compiling

By default FB dialect keywords are not supported, unless you set the preprocessors define DIALECTS, either by uncommenting the source code line '#DEFINE DIALECTS, or at the compiler commend line like

fbc -w all -d DIALECTS FBeauty.bas

The preprocessors define THISFIX makes it handle the keywort THIS correctly, when followed by a dot operator:

fbc -w all -d THISFIX FBeauty.bas

\note This slows down the handling of all words starting with a T character. Since that THIS. code is not neccessary, this feature is implemented as an option.

Further Information