-checkTwistedCached = None
-def checkTwisted():
- """ Returns False if we're using an old version that needs tlib, otherwise returns True """
- global checkTwistedCached
- if checkTwistedCached == None:
- import twisted.copyright
- checkTwistedCached = (VersionNumber(twisted.copyright.version) >= VersionNumber("2.0.0"))
- return checkTwistedCached
-
-class VersionNumber:
- def __init__(self, vstring):
- self.varray = [0]
- index = 0
- flag = True
- for c in vstring:
- if c == '.':
- self.varray.append(0)
- index += 1
- flag = True
- elif c.isdigit() and flag:
- self.varray[index] *= 10
- self.varray[index] += int(c)
- else:
- flag = False
-
- def __cmp__(self, other):
- i = 0
- while(True):
- if i == len(other.varray):
- if i < len(self.varray):
- return 1
- else:
- return 0
- if i == len(self.varray):
- if i < len(other.varray):
- return -1
- else:
- return 0
-
- if self.varray[i] > other.varray[i]:
- return 1
- elif self.varray[i] < other.varray[i]:
- return -1
-
- i += 1
-
-
-