mirror of
https://github.com/openSUSE/osc.git
synced 2024-09-20 17:26:15 +02:00
223 lines
7.1 KiB
Python
223 lines
7.1 KiB
Python
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from __future__ import print_function
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import os.path
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import re
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import tarfile
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from . import packagequery
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import subprocess
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class ArchError(packagequery.PackageError):
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pass
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class ArchQuery(packagequery.PackageQuery, packagequery.PackageQueryResult):
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def __init__(self, fh):
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self.__file = fh
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self.__path = os.path.abspath(fh.name)
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self.fields = {}
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#self.magic = None
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#self.pkgsuffix = 'pkg.tar.gz'
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self.pkgsuffix = b'arch'
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def read(self, all_tags=True, self_provides=True, *extra_tags):
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# all_tags and *extra_tags are currently ignored
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f = open(self.__path, 'rb')
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#self.magic = f.read(5)
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#if self.magic == '\375\067zXZ':
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# self.pkgsuffix = 'pkg.tar.xz'
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fn = open('/dev/null', 'wb')
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pipe = subprocess.Popen(['tar', '-O', '-xf', self.__path, '.PKGINFO'], stdout=subprocess.PIPE, stderr=fn).stdout
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for line in pipe.readlines():
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line = line.rstrip().split(b' = ', 2)
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if len(line) == 2:
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field, value = line[0].decode('ascii'), line[1]
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self.fields.setdefault(field, []).append(value)
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if self_provides:
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prv = b'%s = %s' % (self.name(), self.fields['pkgver'][0])
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self.fields.setdefault('provides', []).append(prv)
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return self
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def vercmp(self, archq):
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res = packagequery.cmp(int(self.epoch()), int(archq.epoch()))
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if res != 0:
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return res
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res = ArchQuery.rpmvercmp(self.version(), archq.version())
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if res != 0:
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return res
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res = ArchQuery.rpmvercmp(self.release(), archq.release())
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return res
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def name(self):
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return self.fields['pkgname'][0] if 'pkgname' in self.fields else None
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def version(self):
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pkgver = self.fields['pkgver'][0] if 'pkgver' in self.fields else None
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if pkgver != None:
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pkgver = re.sub(br'[0-9]+:', b'', pkgver, 1)
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pkgver = re.sub(br'-[^-]*$', b'', pkgver)
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return pkgver
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def release(self):
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pkgver = self.fields['pkgver'][0] if 'pkgver' in self.fields else None
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if pkgver != None:
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m = re.search(br'-([^-])*$', pkgver)
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if m:
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return m.group(1)
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return None
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def _epoch(self):
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pkgver = self.fields.get('pkgver', [b''])[0]
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if pkgver:
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m = re.match(br'([0-9])+:', pkgver)
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if m:
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return m.group(1)
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return b''
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def epoch(self):
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epoch = self._epoch()
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if epoch:
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return epoch
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return b'0'
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def arch(self):
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return self.fields['arch'][0] if 'arch' in self.fields else None
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def description(self):
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return self.fields['pkgdesc'][0] if 'pkgdesc' in self.fields else None
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def path(self):
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return self.__path
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def provides(self):
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return self.fields['provides'] if 'provides' in self.fields else []
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def requires(self):
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return self.fields['depend'] if 'depend' in self.fields else []
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def conflicts(self):
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return self.fields['conflict'] if 'conflict' in self.fields else []
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def obsoletes(self):
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return self.fields['replaces'] if 'replaces' in self.fields else []
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def recommends(self):
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# a .PKGINFO has no notion of "recommends"
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return []
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def suggests(self):
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# libsolv treats an optdepend as a "suggests", hence we do the same
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if 'optdepend' not in self.fields:
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return []
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return [re.sub(b':.*', b'', entry) for entry in self.fields['optdepend']]
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def supplements(self):
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# a .PKGINFO has no notion of "recommends"
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return []
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def enhances(self):
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# a .PKGINFO has no notion of "enhances"
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return []
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def canonname(self):
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name = self.name()
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if name is None:
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raise ArchError(self.path(), 'package has no name')
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version = self.version()
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if version is None:
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raise ArchError(self.path(), 'package has no version')
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arch = self.arch()
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if arch is None:
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raise ArchError(self.path(), 'package has no arch')
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return ArchQuery.filename(name, self._epoch(), version, self.release(),
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arch)
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def gettag(self, tag):
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# implement me, if needed
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return None
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@staticmethod
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def query(filename, all_tags = False, *extra_tags):
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f = open(filename, 'rb')
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archq = ArchQuery(f)
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archq.read(all_tags, *extra_tags)
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f.close()
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return archq
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@staticmethod
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def rpmvercmp(ver1, ver2):
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"""
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implementation of RPM's version comparison algorithm
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(as described in lib/rpmvercmp.c)
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"""
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if ver1 == ver2:
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return 0
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elif ver1 is None:
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return -1
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elif ver2 is None:
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return 1
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res = 0
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while res == 0:
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# remove all leading non alphanumeric chars
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ver1 = re.sub(b'^[^a-zA-Z0-9]*', b'', ver1)
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ver2 = re.sub(b'^[^a-zA-Z0-9]*', b'', ver2)
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if not (len(ver1) and len(ver2)):
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break
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# check if we have a digits segment
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mo1 = re.match(b'(\d+)', ver1)
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mo2 = re.match(b'(\d+)', ver2)
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numeric = True
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if mo1 is None:
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mo1 = re.match(b'([a-zA-Z]+)', ver1)
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mo2 = re.match(b'([a-zA-Z]+)', ver2)
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numeric = False
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# check for different types: alpha and numeric
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if mo2 is None:
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if numeric:
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return 1
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return -1
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seg1 = mo1.group(0)
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ver1 = ver1[mo1.end(0):]
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seg2 = mo2.group(1)
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ver2 = ver2[mo2.end(1):]
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if numeric:
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# remove leading zeros
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seg1 = re.sub(b'^0+', b'', seg1)
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seg2 = re.sub(b'^0+', b'', seg2)
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# longer digit segment wins - if both have the same length
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# a simple ascii compare decides
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res = len(seg1) - len(seg2) or packagequery.cmp(seg1, seg2)
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else:
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res = packagequery.cmp(seg1, seg2)
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if res > 0:
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return 1
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elif res < 0:
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return -1
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return packagequery.cmp(ver1, ver2)
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@staticmethod
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def filename(name, epoch, version, release, arch):
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if epoch:
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if release:
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return b'%s-%s:%s-%s-%s.arch' % (name, epoch, version, release, arch)
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else:
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return b'%s-%s:%s-%s.arch' % (name, epoch, version, arch)
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if release:
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return b'%s-%s-%s-%s.arch' % (name, version, release, arch)
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else:
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return b'%s-%s-%s.arch' % (name, version, arch)
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if __name__ == '__main__':
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import sys
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archq = ArchQuery.query(sys.argv[1])
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print(archq.name(), archq.version(), archq.release(), archq.arch())
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try:
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print(archq.canonname())
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except ArchError as e:
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print(e.msg)
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print(archq.description())
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print('##########')
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print(b'\n'.join(archq.provides()))
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print('##########')
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print(b'\n'.join(archq.requires()))
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