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| PySh is a planned roughly POSIX-compliant shell with various built-ins to allow portability of the test suite. | PySh is a planned roughly POSIX-compliant shell with various built-ins to allow portability of the test suite. It is important that this tool be both simple and relatively self-contained. |
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| Some useful links: | The current implementation resides in http://hg.intevation.org/mercurial/pmezard/pysh/ |
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| [http://pyparsing.wikispaces.com/ Pyparsing]: an easy-to-use recursive descent parser as a singly Python module. | Some useful links for getting started: |
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| [http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_10 POSIX shell BNF]: a good starting point for building our shell grammar | * [[http://pyparsing.wikispaces.com/|Pyparsing]]: an easy-to-use recursive descent parser as a single Python module. * [[http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_10|POSIX shell BNF]]: a good starting point for building our shell grammar * [[http://pyparsing.wikispaces.com/space/showimage/ebnf.py|ebnf.py]]: An EBNF->pyparsing converter |
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| [http://pyparsing.wikispaces.com/space/showimage/ebnf.py ebnf.py]: An EBNF->pyparsing converter | Other links: |
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| * [[http://www.antlr.org|Antlr]]: An LL(k) recursive descent parser generator which can generate Python. * [[http://www.dabeaz.com/ply|PLY]] - lex/yacc alike framework for Python * [[http://dev.modelnine.org/hg/pyrr/|PyRR]]: a lexing and parsing toolkit for Python. * [[http://ipython.scipy.org/doc/manual/node12.html|PySh]]: the other Python shell * [[http://www.busybox.net/cgi-bin/viewcvs.cgi/trunk/busybox/shell/ash.c|Ash]]: A maintained slim shell * [[http://lists.samba.org/archive/linux/2004-February/009990.html|Martin Pool presumes that it is not possible to use BNF to describe the sh grammar]] - which is ok, because we only want to make a shell usable for the test suite, not a complete sh replacement ---- CategoryTesting |
PySh is a planned roughly POSIX-compliant shell with various built-ins to allow portability of the test suite. It is important that this tool be both simple and relatively self-contained.
The current implementation resides in http://hg.intevation.org/mercurial/pmezard/pysh/
Some useful links for getting started:
Pyparsing: an easy-to-use recursive descent parser as a single Python module.
POSIX shell BNF: a good starting point for building our shell grammar
ebnf.py: An EBNF->pyparsing converter
Other links:
Antlr: An LL(k) recursive descent parser generator which can generate Python.
PLY - lex/yacc alike framework for Python
PyRR: a lexing and parsing toolkit for Python.
PySh: the other Python shell
Ash: A maintained slim shell
Martin Pool presumes that it is not possible to use BNF to describe the sh grammar
- - which is ok, because we only want to make a shell usable for the test suite, not a complete sh replacement