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From "Graham Dumpleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MODPYTHON-48) psp.PSP doesn't work for a text string
Date Wed, 27 Apr 2005 10:03:23 GMT
     [ http://issues.apache.org/jira/browse/MODPYTHON-48?page=comments#action_63892 ]
     
Graham Dumpleton commented on MODPYTHON-48:
-------------------------------------------

There shouldn't have been anything wrong with the indenting in the attached diff file.
When one creates a diff file, because it puts magic characters at the start of the line,
if there are tabs in the line it can look wrongly formatted, but the "patch" program
which is used to apply the patches sorts it all out okay.

> psp.PSP doesn't work for a text string
> --------------------------------------
>
>          Key: MODPYTHON-48
>          URL: http://issues.apache.org/jira/browse/MODPYTHON-48
>      Project: mod_python
>         Type: Bug
>     Versions: 3.1.4
>     Reporter: Graham Dumpleton
>  Attachments: psp.diff, psp2.diff
>
> The following code doesn't work.
>   from mod_python import apache
>   from mod_python import psp
>   def handler(req):
>        content_file = psp.PSP(req, string='hello world')
>        content_file.run()
>        return apache.OK
> The problems range from typos in the Python code, the Python code
> not actually compiling the parsed string and core dumps in PSP parser
> due to double deletes.
> Issues have been discussed on mailing list. Some of the main posts are:
>   http://www.modpython.org/pipermail/mod_python/2005-April/017932.html
>   http://www.modpython.org/pipermail/mod_python/2005-April/017938.html
>   http://www.modpython.org/pipermail/mod_python/2005-April/017946.html
> Patches are required to lib/python/mod_python/psp.py and src/_pspmodule.c.
> These are include below. An independent check of whether removing explicit
> destruction of the buffer in _pspmodule.c is the correct thing to do should be
> done. Whether "__psp__" is an appropriate second argument to compile() in
> change should be considered.
> *** ../mod_python-3.1.3/lib/python/mod_python/psp.py    Tue Feb 17 06:47:27 2004
> --- lib/python/mod_python/psp.py        Wed Apr 27 11:00:19 2005
> ***************
> *** 111,122 ****
>               self.load_from_file()
>           else:
>   
> !             cached = strcache.get(string)
>               if cached:
>                   self.code = cached
>               else:
> !                 self.code = _psp.parsestring(string)
> !                 strcache.store(string)
>   
>       def cache_get(self, filename, mtime):
>   
> --- 111,124 ----
>               self.load_from_file()
>           else:
>   
> !             cached = mem_scache.get(string)
>               if cached:
>                   self.code = cached
>               else:
> !                 source = _psp.parsestring(string)
> !               code = compile(source, "__psp__", "exec")
> !                 mem_scache.store(string,code)
> !               self.code = code
>   
>       def cache_get(self, filename, mtime):
>   
> ***************
> *** 358,365 ****
>   
>       def get(self, key):
>           if self.cache.has_key(key):
> !             hist, val = self.cache[key]
> !             self.cache[key] = (hits+1, code)
>               return val
>           else:
>               return None
> --- 360,367 ----
>   
>       def get(self, key):
>           if self.cache.has_key(key):
> !             hits, val = self.cache[key]
> !             self.cache[key] = (hits+1, val)
>               return val
>           else:
>               return None
> *** ../mod_python-3.1.3/src/_pspmodule.c        Tue Feb 17 06:47:27 2004
> --- src/_pspmodule.c    Wed Apr 27 10:43:51 2005
> ***************
> *** 146,152 ****
>       bs = yy_scan_string(PyString_AsString(str), scanner);
>       yylex(scanner);
>   
> !     yy_delete_buffer(bs, scanner);
>       yylex_destroy(scanner);
>       
>       psp_string_0(&parser->pycode);
> --- 146,152 ----
>       bs = yy_scan_string(PyString_AsString(str), scanner);
>       yylex(scanner);
>   
> !     /* yy_delete_buffer(bs, scanner); */
>       yylex_destroy(scanner);
>       
>       psp_string_0(&parser->pycode); 

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