diff options
Diffstat (limited to 'git-interface/aurinfo.py')
| -rw-r--r-- | git-interface/aurinfo.py | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/git-interface/aurinfo.py b/git-interface/aurinfo.py new file mode 100644 index 0000000..d9b9372 --- /dev/null +++ b/git-interface/aurinfo.py @@ -0,0 +1,204 @@ +#!/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' % (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'): + # start of new package + try: + key, value = map(str.strip, line.split('=', 1)) + except ValueError: + ecatcher.Catch(lineno, 'unexpected header format in section=%s' % + current_package['pkgname']) + continue + + if key == 'pkgbase': + current_package = aurinfo.SetPkgbase(value) + else: + current_package = aurinfo.AddPackage(value) + 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' % 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' % (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' % 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" % pkgname) + pp.pprint(aurinfo.GetMergedPackage(pkgname)) + print() + elif action == 'validate': + sys.exit(not ValidateAurinfo(filename)) + else: + print('unknown action: %s' % action) + sys.exit(1) + +# vim: set et ts=4 sw=4: |