#!/usr/bin/env python
# -*- coding: iso-8859-1 -*-
'''
Using re.match, re.search, and re.group in if ... elif ... elif ... else ...
'''
__author__ = 'Peter Kleiweg'
__version__ = '1.4'
__date__ = '2005/11/16'
import re
class RE:
'''
Using re.match, re.search, and re.group in if ... elif ... elif ... else ...
This is NOT thread safe
Instance data:
_pattern : pattern compiled by __init__()
Global data:
_match : match object saved by last match() or search()
Example:
rePat1 = RE(pattern1)
rePat2 = RE(pattern2)
for line in lines:
if rePat1.search(line):
grp1 = RE.group(1)
grpA = RE.group('A')
elif rePat2.search(line):
grp2 = RE.group(2)
grpB = RE.group('B')
'''
def __init__(self, pattern, flags=0):
'do and save re.compile(pattern, flags)'
self._pattern = re.compile(pattern, flags)
def match(self, string, flags=0):
'do, save, and return pattern.match(string, flags)'
RE._match = self._pattern.match(string, flags)
return RE._match
def search(self, string, flags=0):
'do, save, and return pattern.search(string, flags)'
RE._match = self._pattern.search(string, flags)
return RE._match
def group(grp=0):
'return match_object.group(grp)'
return RE._match.group(grp)
group = staticmethod(group)
class SR:
'''
Save and return value in bitwise or test
This is thread safe
Instance data:
_ : value saved by __or__()
Example:
rePat1 = re.compile(pattern1)
rePat2 = re.compile(pattern2)
m = SR()
for line in lines:
if m|rePat1.search(line):
grp1 = m.group(1)
grpA = m.group('A')
elif m|rePat2.search(line):
grp2 = m.group(2)
grpB = m.group('B')
'''
def __or__(self, value):
'save value as _ and return value'
self._ = value
return value
def group(self, grp=0):
'return _.group(grp)'
return self._.group(grp)
if __name__ == '__main__':
lines = []
lines.append(' 1 one ')
lines.append(' two 2 ')
lines.append(' three three ')
lines.append(' 4 4 ')
reIntStr = RE(r'^\s*(?P<Int>\d+)\s+(?P<Str>\S.*?)\s*$')
reStrInt = RE(r'^\s*(?P<Str>\S.*?)\s+(?P<Int>\d+)\s*$')
for line in lines:
print '>>>', line
if reIntStr.search(line):
print 'Int:', RE.group('Int')
print 'Str:', RE.group('Str')
print
elif reStrInt.search(line):
print 'Str:', RE.group('Str')
print 'Int:', RE.group('Int')
print
else:
print '*** UNMATCHED ***'
print
print "The same as above, now in a thread safe manner\n"
reIntStr = re.compile(r'^\s*(?P<Int>\d+)\s+(?P<Str>\S.*?)\s*$')
reStrInt = re.compile(r'^\s*(?P<Str>\S.*?)\s+(?P<Int>\d+)\s*$')
m = SR()
for line in lines:
print '>>>', line
if m|reIntStr.search(line):
print 'Int:', m.group('Int')
print 'Str:', m.group('Str')
print
elif m|reStrInt.search(line):
print 'Str:', m.group('Str')
print 'Int:', m.group('Int')
print
else:
print '*** UNMATCHED ***'
print
