An Application Using Writer as a GUI for Creating and Maintaining [e]BNFs
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From time to time it becomes necessary to specify grammars using a variant of the Backus-Naur-Form (BNF) or one of its extended forms (eBNF). BNFs are used e.g. for defining grammars in the RFCs (Request for Comments) standards of the IETF (Internet Engineering Task Force), but also in the context of the World-Wide-Web consortium for defining e.g. XML, but also in the context of the OpenOffice.org projects. If it was possible to use BNFs to create nice renderings for documentation purposes, like syntax definitions in the form of raildiagrams and the like, then the changes to such BNFs could be easily reflected in exactly matching renderings for documentations.
![BNF4OOo An Application Using Writer as a GUI for Creating and Maintaining [e]BNFs Rony G. Flatscher, WU Wien](https://image.slidesharecdn.com/bnf-writer-101001023302-phpapp02/85/An-Application-Using-Writer-as-a-GUI-for-Creating-and-Maintaining-e-BNFs-1-320.jpg)
![Overview ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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An Application Using Writer as a GUI for Creating and Maintaining [e]BNFs
- 1. BNF4OOo An Application Using Writer as a GUI for Creating and Maintaining [e]BNFs Rony G. Flatscher, WU Wien
- 5. Roundup
- 8. Allows the definition of variants of [e]BNF
- 12. IETF RFC's for defining protocols
- 13. OOo for defining protocols
- 18. Not supporting all possible features of eBNFs
- 19. Cannot create error-free and nice looking diagrams
- 21. The supplied IBM documentation is full of easy to comprehend rail track diagrams
- 22. Can only be maintained as ASCII-diagrams (!)
- 24. eBNF and Rail Diagram, 1 (ASCII Characters)
- 25. eBNF and Rail Diagram, 2 (Unicode Characters)
- 26. eBNF and Rail Diagram, 3 (Unicode Characters, Boxed)
- 29. Base format for comprehensive eBNFs
- 32. eBNF as Dita XML
- 38. BNF4Shell.rex, 2 rony@rony-laptop:~$ rexx BNF4Shell.rex -help known options are: -BNFVERSION filepath (default: selection in OptionGUI.rex) -DIAGRAM "ASCII"|"UNICODE"|"PRETTYUNICODE" (default: selection in OptionGUI.rex) -INPUT filepath (default: cmd/shell) -LOGLEVEL "TRACE"|"DEBUG"|"INFO"|"WARN"|"ERROR"|"FATAL" (default: WARN) -MODE "BNF2DIAGRAM"|"BNF2XML"|"XML2BNF" (default: BNF2DIAGRAM) -OUTPUT filepath (default: cmd/shell) rony@rony-laptop:~$
- 39. BNF4Shell.rex, 3
- 43. Diagrams
- 44. XML renderings
- 46. Use documents as a storage and catalog
- 47. Export created diagrams as graphics
- 48. Writer as GUI, 2
- 62. Can be used quietly as a command-line utility
- 65. The Apache Software Foundation's (ASF) Jakarta project "Bean Scripting Framework (BSF)"