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#!/usr/bin/env python
from copy import copy, deepcopy
import pprint
import sys
class Attr(object):
def __init__(self, name, is_multivalued=False, allow_arch_extensions=False):
self.name = name
self.is_multivalued = is_multivalued
self.allow_arch_extensions = allow_arch_extensions
PKGBUILD_ATTRIBUTES = {
'arch': Attr('arch', True),
'backup': Attr('backup', True),
'changelog': Attr('changelog', False),
'checkdepends': Attr('checkdepends', True),
'conflicts': Attr('conflicts', True, True),
'depends': Attr('depends', True, True),
'epoch': Attr('epoch', False),
'groups': Attr('groups', True),
'install': Attr('install', False),
'license': Attr('license', True),
'makedepends': Attr('makedepends', True, True),
'md5sums': Attr('md5sums', True, True),
'noextract': Attr('noextract', True),
'optdepends': Attr('optdepends', True, True),
'options': Attr('options', True),
'pkgname': Attr('pkgname', False),
'pkgrel': Attr('pkgrel', False),
'pkgver': Attr('pkgver', False),
'provides': Attr('provides', True, True),
'replaces': Attr('replaces', True, True),
'sha1sums': Attr('sha1sums', True, True),
'sha224sums': Attr('sha224sums', True, True),
'sha256sums': Attr('sha256sums', True, True),
'sha384sums': Attr('sha384sums', True, True),
'sha512sums': Attr('sha512sums', True, True),
'source': Attr('source', True, True),
'url': Attr('url', False),
'validpgpkeys': Attr('validpgpkeys', True),
}
def find_attr(attrname):
# exact match
attr = PKGBUILD_ATTRIBUTES.get(attrname, None)
if attr:
return attr
# prefix match
# XXX: this could break in the future if PKGBUILD(5) ever
# introduces a key which is a subset of another.
for k in PKGBUILD_ATTRIBUTES.keys():
if attrname.startswith(k + '_'):
return PKGBUILD_ATTRIBUTES[k]
def IsMultiValued(attrname):
attr = find_attr(attrname)
return attr and attr.is_multivalued
class AurInfo(object):
def __init__(self):
self._pkgbase = {}
self._packages = {}
def GetPackageNames(self):
return self._packages.keys()
def GetMergedPackage(self, pkgname):
package = deepcopy(self._pkgbase)
package['pkgname'] = pkgname
for k, v in self._packages.get(pkgname).items():
package[k] = deepcopy(v)
return package
def AddPackage(self, pkgname):
self._packages[pkgname] = {}
return self._packages[pkgname]
def SetPkgbase(self, pkgbasename):
self._pkgbase = {'pkgname' : pkgbasename}
return self._pkgbase
class StderrECatcher(object):
def Catch(self, lineno, error):
print('ERROR[{:d}]: {:s}'.format(lineno, error), file=sys.stderr)
class CollectionECatcher(object):
def __init__(self):
self._errors = []
def Catch(self, lineno, error):
self._errors.append((lineno, error))
def HasErrors(self):
return len(self._errors) > 0
def Errors(self):
return copy(self._errors)
def ParseAurinfoFromIterable(iterable, ecatcher=None):
aurinfo = AurInfo()
if ecatcher is None:
ecatcher = StderrECatcher()
current_package = None
lineno = 0
for line in iterable:
lineno += 1
if line.startswith('#'):
continue
if not line.strip():
# end of package
current_package = None
continue
if not (line.startswith('\t') or line.startswith(' ')):
# start of new package
try:
key, value = map(str.strip, line.split('=', 1))
except ValueError:
ecatcher.Catch(lineno, 'unexpected header format in section={:s}'.format(
current_package['pkgname']))
continue
if key == 'pkgbase':
current_package = aurinfo.SetPkgbase(value)
elif key == 'pkgname':
current_package = aurinfo.AddPackage(value)
else:
ecatcher.Catch(lineno, 'unexpected new section not starting '
'with \'pkgname\' found')
continue
else:
# package attribute
if current_package is None:
ecatcher.Catch(lineno, 'package attribute found outside of '
'a package section')
continue
try:
key, value = map(str.strip, line.split('=', 1))
except ValueError:
ecatcher.Catch(lineno, 'unexpected attribute format in '
'section={:s}'.format(current_package['pkgname']))
if IsMultiValued(key):
if not current_package.get(key):
current_package[key] = []
if value:
current_package[key].append(value)
else:
if not current_package.get(key):
current_package[key] = value
else:
ecatcher.Catch(lineno, 'overwriting attribute '
'{:s}: {:s} -> {:s}'.format(key,
current_package[key], value))
return aurinfo
def ParseAurinfo(filename='.AURINFO', ecatcher=None):
with open(filename) as f:
return ParseAurinfoFromIterable(f, ecatcher)
def ValidateAurinfo(filename='.AURINFO'):
ecatcher = CollectionECatcher()
ParseAurinfo(filename, ecatcher)
errors = ecatcher.Errors()
for error in errors:
print('error on line {:d}: {:s}'.format(error), file=sys.stderr)
return not errors
if __name__ == '__main__':
pp = pprint.PrettyPrinter(indent=4)
if len(sys.argv) == 1:
print('error: not enough arguments')
sys.exit(1)
elif len(sys.argv) == 2:
action = sys.argv[1]
filename = '.AURINFO'
else:
action, filename = sys.argv[1:3]
if action == 'parse':
aurinfo = ParseAurinfo()
for pkgname in aurinfo.GetPackageNames():
print(">>> merged package: {:s}".format(pkgname))
pp.pprint(aurinfo.GetMergedPackage(pkgname))
print()
elif action == 'validate':
sys.exit(not ValidateAurinfo(filename))
else:
print('unknown action: {:s}'.format(action))
sys.exit(1)
# vim: set et ts=4 sw=4:
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