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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| { | ||
| "python.pythonPath": "${workspaceRoot}/venv/bin/python3.6" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| #!/usr/bin/env python3 | ||
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| import re | ||
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| class DebVersion(object): | ||
| """ Implements debian package version comparsion according to deb-version(5) | ||
| I'm not responsible for those brain-dead people who invented this sick format and comparsion rules | ||
| Same functionality is provided by python-apt, but it's poorly maintained | ||
| """ | ||
|
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| __version_re = re.compile(r'''^((?P<epoch>\d+):)?(?P<upstream>[-.+:~0-9A-z]+?)(-(?P<debian>[+.~0-9A-z]+))?$''') | ||
| __digits_re = re.compile(r'''^(\d+)''') | ||
| __nondigits_re = re.compile(r'''^([-.+:~A-z]+)''') | ||
|
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| # table for wicked debianish string comparsion | ||
| __lexical_table = { | ||
| '~': 0, '': 1, '+': 2, '-': 3, '.': 4, ':': 5 | ||
| } | ||
| __lexical_table.update(dict((chr(x), x) for x in range(ord('A'), ord('z')))) | ||
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| def __init__(self, version): | ||
| self.version = version.rstrip().lstrip() | ||
| m = self.__version_re.match(self.version) | ||
| if m: | ||
| self.correct = True | ||
| g = m.groupdict() | ||
| self.epoch = int(g['epoch'] or 0) | ||
| self.upstream = g['upstream'] | ||
| self.debian = g['debian'] | ||
| else: | ||
| self.correct = False | ||
| self.epoch = self.upstream = self.debian = None | ||
|
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| def __part_lt(self, x1, x2): | ||
| """ returns True if x1 < x2 according to string comparsion rules defined in section "Sorting algorithm" of deb-version(5) | ||
| """ | ||
| while True: | ||
| if not x1 and not x2: | ||
| # both strings exhausted, exit | ||
| return False | ||
| elif not x1: | ||
| # otherwise complement None-s to empty string as emptiness matters | ||
| x1 = '' | ||
| elif not x2: | ||
| x2 = '' | ||
|
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| # extract non-digit part from both strings | ||
| m1 = self.__nondigits_re.search(x1) | ||
| m2 = self.__nondigits_re.search(x2) | ||
| s1 = m1.group(1) if m1 else '' | ||
| s2 = m2.group(1) if m2 else '' | ||
| len_s1 = len(s1) | ||
| len_s2 = len(s2) | ||
| i = -1 | ||
| while True: | ||
| # compare both parts | ||
| i = i + 1 | ||
| c1 = s1[i] if i < len_s1 else '' | ||
| c2 = s2[i] if i < len_s2 else '' | ||
| if c1 == '' and c2 == '': | ||
| break | ||
| if c1 == c2: | ||
| continue | ||
| if self.__lexical_table[c1] < self.__lexical_table[c2]: | ||
| return True | ||
| if self.__lexical_table[c1] > self.__lexical_table[c2]: | ||
| return False | ||
|
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||
| # cut analyzed parts from string | ||
| x1 = x1[len_s1:] | ||
| x2 = x2[len_s2:] | ||
|
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| m1 = self.__digits_re.search(x1) | ||
| m2 = self.__digits_re.search(x2) | ||
| s1 = m1.group(1) if m1 else '' | ||
| s2 = m2.group(1) if m2 else '' | ||
| number1 = int(s1 or 0) | ||
| number2 = int(s2 or 0) | ||
| if number1 < number2: | ||
| return True | ||
| elif number1 > number2: | ||
| return False | ||
|
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| # cut analyzed numbers from string and go over | ||
| x1 = x1[len(s1):] | ||
| x2 = x2[len(s2):] | ||
|
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| def __eq__(self, x): | ||
| return self.__cmp__(x) == 0 | ||
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| def __ne__(self, x): | ||
| return self.__cmp__(x) != 0 | ||
|
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| def __lt__(self, x): | ||
| return self.__cmp__(x) < 0 | ||
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| def __gt__(self, x): | ||
| return self.__cmp__(x) > 0 | ||
|
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| def __ge__(self, x): | ||
| return self.__cmp__(x) >= 0 | ||
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| def __le__(self, x): | ||
| return self.__cmp__(x) <= 0 | ||
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| def __cmp__(self, x): | ||
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| if self.epoch == x.epoch and self.upstream == x.upstream and self.debian == x.debian: | ||
| return 0 | ||
|
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| if not self.correct: | ||
| # incorrect versions are always lesser | ||
| return -1 | ||
|
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| if self.epoch != x.epoch: | ||
| if self.epoch < x.epoch: | ||
| return -1 | ||
| else: | ||
| return 1 | ||
|
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| if self.upstream != x.upstream: | ||
| if self.__part_lt(self.upstream, x.upstream): | ||
| return -1 | ||
| else: | ||
| return 1 | ||
|
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| if self.debian != x.debian: | ||
| if self.__part_lt(self.debian, x.debian): | ||
| return -1 | ||
| else: | ||
| return 1 | ||
|
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||
| return 0 |
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