Thread: [Pyparsing] Parsing object structure
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From: Claus R. <cla...@ro...> - 2012-09-18 08:30:59
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Hi,
i try to parse an object structure which is using open and close tags
and containing lists of another objects.
Example:
NetSet{
name={LAN SIDE}
oid={123998333,723663,2625521122}
readOnly={0}
origin={}
global={0}
comment={Voice Server UC}
list={
NetEntry{
name={}
readOnly={0}
origin={}
global={0}
comment={}
addr={192.169.0.0/24}
}
}
neglist={
}
}
I tried to start with following code structure and don't know if it
makes sense or not.
from pyparsing import *
LBRACE,RBRACE,SEMI,EQ,PCT = map(Suppress,"{};=%")
comment = SEMI + restOfLine
keyName = Word(alphas)
text = Word( alphanums, "-", ",")
text = Word(printables)
num = Word(nums)
ip = Combine(Word(nums) + ('.' + Word(nums))*3)
v_text = keyName + EQ + LBRACE + Optional(text) + RBRACE
v_num = keyName + EQ + LBRACE + Optional(num) + RBRACE
v_ip = keyName + EQ + LBRACE + Optional(ip) + RBRACE
NETENTRY = ( "NetEntry" + LBRACE + ZeroOrMore(Group(v_text | v_num |
v_ip)) + RBRACE )
NETSET_PLIST = ( "list" + EQ + LBRACE + ZeroOrMore(NETENTRY) + RBRACE )
NETSET_NLIST = "neglist" + EQ + LBRACE + ZeroOrMore(Group(NETENTRY)) +
RBRACE
NETSET = "NetSet" + LBRACE + ZeroOrMore(Group(v_text | v_num |
NETSET_PLIST | NETSET_NLIST)) + RBRACE
rule_ref = NETSET
for mr in rule_ref.parseFile("sample"):
print mr
I get following result:
pyparsing.ParseException: Expected "}" (at char 48), (line:2, col:25)
It seems NETSET_PLIST does not work, perhaps my code is the wrong approach.
Thanks a lot
Claus
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From: Paul M. <pt...@au...> - 2012-09-18 12:22:58
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In your definition of 'text', you only match a single word - "name={LAN
SIDE}" contains a text value with whitespace, more than one word. Also,
beware of making 'text' match too much, you may end up including your
trailing '}' as part of the text (as you will with your current definition
of text as "Word(printables)").
-- Paul
-----Original Message-----
From: Claus Rosenberger [mailto:cla...@ro...]
Sent: Tuesday, September 18, 2012 3:13 AM
To: pyp...@li...
Subject: [Pyparsing] Parsing object structure
Hi,
i try to parse an object structure which is using open and close tags
and containing lists of another objects.
Example:
NetSet{
name={LAN SIDE}
oid={123998333,723663,2625521122}
readOnly={0}
origin={}
global={0}
comment={Voice Server UC}
list={
NetEntry{
name={}
readOnly={0}
origin={}
global={0}
comment={}
addr={192.169.0.0/24}
}
}
neglist={
}
}
I tried to start with following code structure and don't know if it
makes sense or not.
from pyparsing import *
LBRACE,RBRACE,SEMI,EQ,PCT = map(Suppress,"{};=%")
comment = SEMI + restOfLine
keyName = Word(alphas)
text = Word( alphanums, "-", ",")
text = Word(printables)
num = Word(nums)
ip = Combine(Word(nums) + ('.' + Word(nums))*3)
v_text = keyName + EQ + LBRACE + Optional(text) + RBRACE
v_num = keyName + EQ + LBRACE + Optional(num) + RBRACE
v_ip = keyName + EQ + LBRACE + Optional(ip) + RBRACE
NETENTRY = ( "NetEntry" + LBRACE + ZeroOrMore(Group(v_text | v_num |
v_ip)) + RBRACE )
NETSET_PLIST = ( "list" + EQ + LBRACE + ZeroOrMore(NETENTRY) + RBRACE )
NETSET_NLIST = "neglist" + EQ + LBRACE + ZeroOrMore(Group(NETENTRY)) +
RBRACE
NETSET = "NetSet" + LBRACE + ZeroOrMore(Group(v_text | v_num |
NETSET_PLIST | NETSET_NLIST)) + RBRACE
rule_ref = NETSET
for mr in rule_ref.parseFile("sample"):
print mr
I get following result:
pyparsing.ParseException: Expected "}" (at char 48), (line:2, col:25)
It seems NETSET_PLIST does not work, perhaps my code is the wrong approach.
Thanks a lot
Claus
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From: Claus R. <cla...@ro...> - 2012-09-20 10:30:50
|
Ok, i changed it to the minimal set i need at the moment.
text = Word( alphanums + "," + " ")
But i have another problem with that line it seems.
NETSET = "NetSet" + LBRACE + ZeroOrMore(Group(v_text | v_num | NETSET_PLIST | NETSET_NLIST)) + RBRACE
It's referencing to NETSET_PLIST which is defined as follows:
NETSET_PLIST = ( "list" + EQ + LBRACE + ZeroOrMore(NETENTRY) + RBRACE )
Which means it should match "list={" and a few child options gut i get following message while parsing:
pyparsing.ParseException: Expected "}" (at char 302), (line:8, col:25)
Claus
Am 18.09.2012 14:22:46, schrieb Paul McGuire:
> In your definition of 'text', you only match a single word - "name={LAN
> SIDE}" contains a text value with whitespace, more than one word. Also,
> beware of making 'text' match too much, you may end up including your
> trailing '}' as part of the text (as you will with your current definition
> of text as "Word(printables)").
>
> -- Paul
>
>
> -----Original Message-----
> From: Claus Rosenberger [mailto:> cla...@ro...> ]
> Sent: Tuesday, September 18, 2012 3:13 AM
> To: > pyp...@li...
> Subject: [Pyparsing] Parsing object structure
>
> Hi,
>
> i try to parse an object structure which is using open and close tags
> and containing lists of another objects.
>
> Example:
>
> NetSet{
> name={LAN SIDE}
> oid={123998333,723663,2625521122}
> readOnly={0}
> origin={}
> global={0}
> comment={Voice Server UC}
> list={
> NetEntry{
> name={}
> readOnly={0}
> origin={}
> global={0}
> comment={}
> addr={192.169.0.0/24}
> }
> }
> neglist={
> }
> }
>
>
> I tried to start with following code structure and don't know if it
> makes sense or not.
>
> from pyparsing import *
>
> LBRACE,RBRACE,SEMI,EQ,PCT = map(Suppress,"{};=%")
> comment = SEMI + restOfLine
>
> keyName = Word(alphas)
> text = Word( alphanums, "-", ",")
> text = Word(printables)
> num = Word(nums)
> ip = Combine(Word(nums) + ('.' + Word(nums))*3)
>
> v_text = keyName + EQ + LBRACE + Optional(text) + RBRACE
> v_num = keyName + EQ + LBRACE + Optional(num) + RBRACE
> v_ip = keyName + EQ + LBRACE + Optional(ip) + RBRACE
>
> NETENTRY = ( "NetEntry" + LBRACE + ZeroOrMore(Group(v_text | v_num |
> v_ip)) + RBRACE )
> NETSET_PLIST = ( "list" + EQ + LBRACE + ZeroOrMore(NETENTRY) + RBRACE )
> NETSET_NLIST = "neglist" + EQ + LBRACE + ZeroOrMore(Group(NETENTRY)) +
> RBRACE
> NETSET = "NetSet" + LBRACE + ZeroOrMore(Group(v_text | v_num |
> NETSET_PLIST | NETSET_NLIST)) + RBRACE
> rule_ref = NETSET
>
> for mr in rule_ref.parseFile("sample"):
> print mr
>
> I get following result:
>
> pyparsing.ParseException: Expected "}" (at char 48), (line:2, col:25)
>
> It seems NETSET_PLIST does not work, perhaps my code is the wrong approach.
>
> Thanks a lot
> Claus
>
> ----------------------------------------------------------------------------
> --
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Pyparsing-users mailing list
> Pyp...@li...
> https://lists.sourceforge.net/lists/listinfo/pyparsing-users
|
|
From: Claus R. <cla...@ro...> - 2012-09-25 10:00:46
|
Ok, i solved it, some chars were missing. Now i try to handle german umlauts,
text = Word( alphas8bit + alphanums + " -,/.|:_()+;&" )
does not work, error message says
/usr/lib/python2.7/dist-packages/pyparsing.py:1698: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
i try to mix it up with unicode as well
text = Word( alphas8bit + alphanums + " -,/.|:_()+;&" + u"ü")
but it does not work either. Is there any alphanums to use with unicode?
Claus
Am 20.09.2012 12:30:14, schrieb Claus Rosenberger:
> Ok, i changed it to the minimal set i need at the moment.
> text = Word( alphanums + "," + " ")
>
>
> But i have another problem with that line it seems.
> NETSET = "NetSet" + LBRACE + ZeroOrMore(Group(v_text | v_num | NETSET_PLIST | NETSET_NLIST)) + RBRACE
>
>
> It's referencing to NETSET_PLIST which is defined as follows:
> NETSET_PLIST = ( "list" + EQ + LBRACE + ZeroOrMore(NETENTRY) + RBRACE )
>
>
> Which means it should match "list={" and a few child options gut i get following message while parsing:
> pyparsing.ParseException: Expected "}" (at char 302), (line:8, col:25)
>
>
> Claus
|
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