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On 07/28/2011 12:11 AM, Dan Stromberg wrote:
<blockquote
cite="mid:CAGGBd_qXDTKK9hkv-VteS+=d6Rnxa0M+qvL3rRHY56AAOPd44g@mail.gmail.com"
type="cite"><br>
You could probably use a recursive descent parser with the
standard library.<br>
<br>
But if your management is OK with pyparsing, that might be easier,
and a bit more clear as well.<br>
</blockquote>
<br>
Yes, I thought to use str method partition in a recursive way but
using pyParsing still be easer.<br>
<br>
Thanks<br>
Cheers<br>
<br>
<blockquote
cite="mid:CAGGBd_qXDTKK9hkv-VteS+=d6Rnxa0M+qvL3rRHY56AAOPd44g@mail.gmail.com"
type="cite"><br>
<div class="gmail_quote">On Wed, Jul 27, 2011 at 2:08 PM, Karim <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:karim.liateni@free.fr">karim.liateni@free.fr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> <br>
Thank you Dan for answering.<br>
<br>
I ended with this and gave up with shlex:<br>
<br>
split = ['-option1', '[get_rule', 'A1', 'B2]', '-option2',
'$VAR', '-option3', 'TAG']<br>
<br>
procedure_found = False<br>
result = []<br>
<br>
for token in split:<br>
if not token.startswith('[') and not token.endswith(']')
and not procedure_found:<br>
result.append(token)<br>
elif token.startswith('['):<br>
procedure_found = True<br>
_token = token<br>
elif token.endswith(']'):<br>
procedure_found = False<br>
_token += ' ' + token<br>
result.append(_token)<br>
else:<br>
_token += ' ' + token<br>
<br>
print split<br>
print result<br>
<br>
which gives the desired values:<br>
<br>
['-option1', '[get_rule', 'A1', 'B2]', '-option2', '$VAR',
'-option3', 'TAG']<br>
['-option1', '[get_rule A1 B2]', '-option2', '$VAR',
'-option3', 'TAG']<br>
<br>
<br>
Sure pyParsing seems to be pretty simple but my constraint
is to use<br>
standard lib (at maximum). To bad it is not part of python
standard libs.<br>
On the other hand, I will have to regroup expression like
'-option1 $VAL == $CONSTRAINT'<br>
in ['-option1', '$VAL == $CONSTRAINT'].<br>
<br>
So it seems that I have no others choicse and have to use a
parser like pyParsing.<br>
<br>
Regards<br>
<font color="#888888"> Karim</font>
<div>
<div class="h5"><br>
<br>
On 07/27/2011 10:44 PM, Dan Stromberg wrote:
<blockquote type="cite"><br>
I've not used the shlex module, but this feels more
like an issue to address with a parser than for a
lexical analyzer - or perhaps even both, since you're
splitting on whitespace sometimes, and matching square
brackets sometimes.<br>
<br>
I've used pyparsing for stuff a bit similar to this.<br>
<br>
Or here's a list:<br>
<a moz-do-not-send="true"
href="http://wiki.python.org/moin/LanguageParsing"
target="_blank">http://wiki.python.org/moin/LanguageParsing</a><br>
<br>
<div class="gmail_quote"> On Wed, Jul 27, 2011 at
12:30 PM, Karim <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:karim.liateni@free.fr"
target="_blank">karim.liateni@free.fr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt
0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204); padding-left: 1ex;"> <br>
Hello All,<br>
<br>
I would like to parse this TCL command line with
shlex:<br>
<br>
'-option1 [get_rule A1 B2] -option2 $VAR -option3
TAG'<br>
<br>
And I want to get the splitted list:<br>
<br>
['-option1', '[get_rule A1 B2]', '-option2',
'$VAR', '-option3', 'TAG']<br>
<br>
Then I will gather in tuple 2 by 2 the arguments.<br>
<br>
I tried to the shlec properties attributes
'quotes', 'whitespace', etc...<br>
<br>
But I make 'choux blanc'.<br>
<br>
If somebody has complex experiences with this
module I am in.<br>
<br>
Cheers<br>
Karim<br>
<font color="#888888"> -- <br>
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href="http://mail.python.org/mailman/listinfo/python-list"
target="_blank">http://mail.python.org/mailman/listinfo/python-list</a><br>
</font></blockquote>
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