quickly read a formated file?

[lialie]

Hi,
Is there a fine way to read a formated file like:
%HEADER
title = "Untilted"
username = "User"

%DATA
.......
.......
The formated file may be very popularly, but the module ConfigPaser
doesn't handle it. Is there a way to process it freely?

[bearophileHUGS@lycos.com]

Re: quickly read a formated file?

lialie:

The formated file may be very popularly, but the module ConfigPaser
doesn't handle it. Is there a way to process it freely?

First try, assuming the input file can be read whole. The code isn't
much readable, it needs better variable names (name names?), comments,
etc.

data = """
%HEADER
title1 = "Untilted1"
username = "User1"

%DATA
title2 = "Untilted2"
username2 = "User2"
"""

l1 = (p.strip().spli tlines() for p in data.split("%") if p.strip())
result = {}
for part in l1:
pairs1 = (pair.split('=' ) for pair in part[1:])
pairs2 = ((k.strip(), v.strip().strip ('"')) for k,v in pairs1)
result[part[0]] = dict(pairs2)
print result


All done lazily for your better comfort :-)

Bye,
bearophile

[rzed]

Re: quickly read a formated file?

bearophileHUGS@ lycos.com wrote in
news:1172740062 .523000.209320@ 8g2000cwh.googl egroups.com:

lialie:

>The formated file may be very popularly, but the module
>ConfigPaser doesn't handle it. Is there a way to process it
>freely?

>
First try, assuming the input file can be read whole. The code
isn't much readable, it needs better variable names (name
names?), comments, etc.
>
data = """
%HEADER
title1 = "Untilted1"
username = "User1"
>
%DATA
title2 = "Untilted2"
username2 = "User2"
"""
>
l1 = (p.strip().spli tlines() for p in data.split("%") if
p.strip()) result = {}
for part in l1:
pairs1 = (pair.split('=' ) for pair in part[1:])
pairs2 = ((k.strip(), v.strip().strip ('"')) for k,v in

pairs1) result[part[0]] = dict(pairs2)

print result
>
>

If there could be embedded perecent signs in the data, that will
produce some unexpected results, though. Here's another shot:

data = """
%HEADER
title1 = "Untilted1"
username = "User1"

%DATA
title2 = "The 7% Solution"
username2 = "User2"
"""

# Assumes there may be embedded percent signs in data
# and all data lines are of the form key = value
def parseData(data) :
pd = {}
idata = iter(data)
for line in idata:
line = line.strip()
if line.startswith ('%'):
tname = line[1:]
cd = pd[tname] = {}
line = idata.next().st rip()
while line != '':
if line.find('=') 0:
id,val = line.split('=', 1)
cd[id.strip()] = val.strip().str ip('"')
line = idata.next().st rip()
return pd


print parseData(data. split('\n'))

[Jussi Salmela]

Re: quickly read a formated file?

rzed kirjoitti:

bearophileHUGS@ lycos.com wrote in
news:1172740062 .523000.209320@ 8g2000cwh.googl egroups.com:
>

>lialie:

>>The formated file may be very popularly, but the module
>>ConfigPaser doesn't handle it. Is there a way to process it
>>freely?

>First try, assuming the input file can be read whole. The code
>isn't much readable, it needs better variable names (name
>names?), comments, etc.
>>
>data = """
>%HEADER
>title1 = "Untilted1"
>username = "User1"
>>
>%DATA
>title2 = "Untilted2"
>username2 = "User2"
>"""
>>
>l1 = (p.strip().spli tlines() for p in data.split("%") if
>p.strip()) result = {}
>for part in l1:
> pairs1 = (pair.split('=' ) for pair in part[1:])
> pairs2 = ((k.strip(), v.strip().strip ('"')) for k,v in

pairs1) result[part[0]] = dict(pairs2)

>print result
>>
>>

>
If there could be embedded perecent signs in the data, that will
produce some unexpected results, though. Here's another shot:
>
>
<snip>
>
>

The solution of bearophile only needs 2 small modifications to handle this:

#============== =============== ============
data = """
%HEADER
title1 = "Untilted1"
username = "User1 20 %"

%DATA
title2 = "Untilted2"
username2 = "User2 10 %"
"""

# Ensure data starts with a newline
data = '\n' + data

# Split using '\n%' instead of '%'
l1 = (p.strip().spli tlines() for p in data.split("\n% ") if p.strip())
result = {}
for part in l1:
pairs1 = (pair.split('=' ) for pair in part[1:])
pairs2 = ((k.strip(), v.strip().strip ('"')) for k,v in pairs1)
result[part[0]] = dict(pairs2)
print result
#============== =============== ============



Cheers,
Jussi