The following form calls a program written in C++, that converts a grammar into syntax diagrams. The diagrams can be used for direct printing and inclusion in printable text files. Two examples for a grammar are given (a variant of the EBNF-grammar and the XPath-grammar).
The file-upload, some choices of the grammar type, the choice of the output format and comments are not yet implemented, so please don't use them.
If you find any errors, please contact one of us by email. Give information about the used grammar, the used options and a description of the error please. We don't store anything you input - more exactly, we delete any stored information daily at 2.14 GMT, so we can't trace back any error.
The program is submitted for public and free use. We can not assume any responsability for errors resulting from the use of this program. Neither is any liability assumed for any problems or damage resulting from the use of this program. We do not intend any commercial purpose.
The program uses the cgic and the gd package from Thomas Boutell and indirectly the freeware products libpng.a, libjpeg.a, zlib and freetype. The input filter for different grammars uses bison and flex. The program has been translated with Gnu C/C++.
The XPath grammar of the example was extracted from a publication of W3C. The BNF grammar of the example is widely known and found in thousands of books and 5010 Web pages (google search on 4.Feb.2004)
If you have problems with the page, please contact me:
Necessary german law court amendment only: Wir distanzieren uns selbstverständlich vom Inhalt aller verlinkten Seiten! (Sogar, wenn wir sie gut finden)
Last change: 1. Nov. 2011, F. Braun
Written by Prof. Dr. Fritz Jobst and Dipl. Math. Frank Braun, Regensburg, Germany
Last change 4. Dec. 2013, Frank Braun,