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javaversion.py
65 lines (53 loc) · 2.09 KB
/
javaversion.py
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from parser import ParserError
import re
class JavaVersion(object):
@staticmethod
def isValid(version_str):
try:
JavaVersion.parse(version_str)
return True
except ParserError as e:
return False
@staticmethod
def parse(version_str):
m = re.match(r"""
^JDK # 先頭JDK
([1-9][0-9]*) # familyNumber1桁目は0位外の数字で始まりn桁の数字
u # 固定文字 u
([0-9]+)$ # 1桁以上の数字(0可)
"""
, version_str, re.VERBOSE)
if m is None:
raise ParserError("invalid version string.")
familyNumber = int(m.group(1))
updateNumber = int(m.group(2))
return JavaVersion(familyNumber, updateNumber)
def __init__(self, familyNumber, updateNumber):
self._familyNumber = familyNumber
self._updateNumber = updateNumber
@property
def familyNumber(self):
return self._familyNumber
@property
def updateNumber(self):
return self._updateNumber
def __eq__(self, other):
return (self.familyNumber == other.familyNumber and
self.updateNumber == other.updateNumber)
def __lt__(self, other):
if self.familyNumber == other.familyNumber:
return self.updateNumber < other.updateNumber
return self.familyNumber < other.familyNumber
def nextLimitedUpdate(self):
nextUpdateNumber = self.updateNumber + 20 - (self.updateNumber % 20)
return JavaVersion(self.familyNumber, nextUpdateNumber)
def nextCriticalPatchUpdate(self):
nextUpdateNumber = self.updateNumber + 5 - (self.updateNumber % 5)
if nextUpdateNumber % 2 == 0:
nextUpdateNumber += 1
return JavaVersion(self.familyNumber, nextUpdateNumber)
def nextSecurityAlert(self):
nextUpdateNumber = self.updateNumber + 1
if nextUpdateNumber % 5 == 0:
nextUpdateNumber += 1
return JavaVersion(self.familyNumber, nextUpdateNumber)