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comps.py
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#! /usr/bin/python -tt # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Library General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # Copyright 2005 Duke University import types import sys from yum.constants import * from yum.Errors import CompsException #FIXME - compsexception isn't caught ANYWHERE so it's pointless to raise it # switch all compsexceptions to grouperrors after api break import fnmatch import re from yum.i18n import to_unicode from yum.misc import get_my_lang_code from yum.misc import cElementTree_iterparse as iterparse lang_attr = '{http://www.w3.org/XML/1998/namespace}lang' def parse_boolean(strng): return BOOLEAN_STATES.get(strng.lower(), False) def parse_number(strng): return int(strng) class CompsObj(object): """ Group/Category helper object. """ # Could be the same as ui_name? def __str__(self): """ Return the "name" of the object for the C locale. """ return self.name @property def compsid(self): """ Return the "id": categoryid, groupid, environmentid. """ for idT in ('categoryid', 'groupid', 'environmentid'): if hasattr(self, idT): return getattr(self, idT) return None @property def ui_name(self): """ Return the "name" of the object for the current locale. """ return self.nameByLang(get_my_lang_code()) @property def ui_description(self): """ Return the "description" of the object for the current locale. """ return self.descriptionByLang(get_my_lang_code()) def __cmp__(self, other): if other is None: return 1 if self.display_order > other.display_order: return 1 if self.display_order < other.display_order: return -1 return cmp(self.ui_name, other.ui_name) def _expand_languages(self, lang): import gettext languages = [lang] if 'C' not in languages: languages.append('C') # now normalize and expand the languages nelangs = [] for lang in languages: for nelang in gettext._expand_lang(lang): if nelang not in nelangs: nelangs.append(nelang) return nelangs def nameByLang(self, lang): for langcode in self._expand_languages(lang): if langcode in self.translated_name: return to_unicode(self.translated_name[langcode]) return to_unicode(self.name) def descriptionByLang(self, lang): for langcode in self._expand_languages(lang): if langcode in self.translated_description: return to_unicode(self.translated_description[langcode]) return to_unicode(self.description) class Group(CompsObj): """ Group object parsed from group data in each repo. and merged. """ def __init__(self, elem=None): self.user_visible = True self.default = False self.selected = False self.name = "" self.description = "" self.translated_name = {} self.translated_description = {} self.mandatory_packages = {} self.optional_packages = {} self.default_packages = {} self.conditional_packages = {} self.langonly = None self.groupid = None self.display_order = 1024 self.installed = False self.toremove = False self._weak = False if elem: self.parse(elem) def _packageiter(self): # Gah, FIXME: real iterator/class lst = self.mandatory_packages.keys() + \ self.optional_packages.keys() + \ self.default_packages.keys() + \ self.conditional_packages.keys() return lst packages = property(_packageiter) def parse(self, elem): for child in elem: if child.tag == 'id': myid = child.text if self.groupid is not None: raise CompsException self.groupid = myid elif child.tag == 'name': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_name[lang] = text else: self.name = text elif child.tag == 'description': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_description[lang] = text else: if text: self.description = text elif child.tag == 'uservisible': self.user_visible = parse_boolean(child.text) elif child.tag == 'display_order': self.display_order = parse_number(child.text) elif child.tag == 'default': self.default = parse_boolean(child.text) elif child.tag in ['langonly', 'lang_only']: text = child.text if self.langonly is not None: raise CompsException self.langonly = text elif child.tag == 'packagelist': self.parse_package_list(child) def parse_package_list(self, packagelist_elem): for child in packagelist_elem: if child.tag == 'packagereq': genre = child.attrib.get('type') if not genre: genre = u'mandatory' if genre not in ('mandatory', 'default', 'optional', 'conditional'): # just ignore bad package lines continue package = child.text if not package: # Ignore this too, or we end up doing: # .searchNevra(name=None) continue if genre == 'mandatory': self.mandatory_packages[package] = 1 elif genre == 'default': self.default_packages[package] = 1 elif genre == 'optional': self.optional_packages[package] = 1 elif genre == 'conditional': self.conditional_packages[package] = child.attrib.get('requires') def add(self, obj): """Add another group object to this object""" # we only need package lists and any translation that we don't already # have for pkg in obj.mandatory_packages: self.mandatory_packages[pkg] = 1 for pkg in obj.default_packages: self.default_packages[pkg] = 1 for pkg in obj.optional_packages: self.optional_packages[pkg] = 1 for pkg in obj.conditional_packages: self.conditional_packages[pkg] = obj.conditional_packages[pkg] # Handle cases where a comps.xml without name & decription tags # has been setup first, so the name & decription for this object is blank. if self.name == '' and obj.name != '': self.name = obj.name if self.description == '' and obj.description != '': self.description = obj.description # name and description translations for lang in obj.translated_name: if lang not in self.translated_name: self.translated_name[lang] = obj.translated_name[lang] for lang in obj.translated_description: if lang not in self.translated_description: self.translated_description[lang] = obj.translated_description[lang] def xml(self): """write out an xml stanza for the group object""" msg =""" <group> <id>%s</id> <default>%s</default> <uservisible>%s</uservisible> <display_order>%s</display_order>\n""" % (self.groupid, str(self.default).lower(), str(self.user_visible).lower(), self.display_order) if self.langonly: msg += """ <langonly>%s</langonly>""" % self.langonly msg +=""" <name>%s</name>\n""" % self.name for (lang, val) in sorted(self.translated_name.items()): msg += """ <name xml:lang="%s">%s</name>\n""" % (lang, val) msg += """ <description>%s</description>\n""" % self.description for (lang, val) in sorted(self.translated_description.items()): msg += """ <description xml:lang="%s">%s</description>\n""" % (lang, val) msg += """ <packagelist>\n""" for pkg in sorted(self.mandatory_packages): msg += """ <packagereq type="mandatory">%s</packagereq>\n""" % pkg for pkg in sorted(self.default_packages): msg += """ <packagereq type="default">%s</packagereq>\n""" % pkg for pkg in sorted(self.optional_packages): msg += """ <packagereq type="optional">%s</packagereq>\n""" % pkg for (pkg, req) in sorted(self.conditional_packages.items()): msg += """ <packagereq type="conditional" requires="%s">%s</packagereq>\n""" % (req, pkg) msg += """ </packagelist>\n""" msg += """ </group>""" return msg class Environment(CompsObj): """ Environment object parsed from group data in each repo, and merged """ def __init__(self, elem=None): self.name = "" self.environmentid = None self.description = "" self.translated_name = {} self.translated_description = {} self.display_order = 1024 self.langonly = None self.installed = False self._groups = {} self._options = {} self._defaultoptions = {} self._weak = False if elem: self.parse(elem) def _allgroupiter(self): lst = self._groups.keys() + \ self._options.keys() return lst allgroups = property(_allgroupiter) def _groupiter(self): return self._groups.keys() groups = property(_groupiter) def _optioniter(self): return self._options.keys() options = property(_optioniter) def _defaultoptioniter(self): return self._defaultoptions.keys() defaultoptions = property(_defaultoptioniter) def parse(self, elem): for child in elem: if child.tag == 'id': myid = child.text if self.environmentid is not None: raise CompsException self.environmentid = myid elif child.tag == 'name': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_name[lang] = text else: self.name = text elif child.tag == 'description': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_description[lang] = text else: self.description = text elif child.tag == 'grouplist': self.parse_group_list(child) elif child.tag == 'optionlist': self.parse_option_list(child) elif child.tag == 'display_order': self.display_order = parse_number(child.text) def parse_group_list(self, grouplist_elem): for child in grouplist_elem: if child.tag == 'groupid': groupid = child.text self._groups[groupid] = 1 def parse_option_list(self, optionlist_elem): for child in optionlist_elem: if child.tag == 'groupid': optionid = child.text self._options[optionid] = 1 defopt = child.attrib.get('default') if defopt: default = parse_boolean(defopt) else: default = False if default: self._defaultoptions[optionid] = 1 def add(self, obj): """Add another environment object to this object""" for grp in obj.groups: self._groups[grp] = 1 for grp in obj.defaultoptions: self._defaultoptions[grp] = 1 for grp in obj.options: self._options[grp] = 1 # name and description translations for lang in obj.translated_name: if lang not in self.translated_name: self.translated_name[lang] = obj.translated_name[lang] for lang in obj.translated_description: if lang not in self.translated_description: self.translated_description[lang] = obj.translated_description[lang] def xml(self): """write out an xml stanza for the environment object""" msg =""" <environment> <id>%s</id> <display_order>%s</display_order>\n""" % (self.environmentid, self.display_order) msg +=""" <name>%s</name>\n""" % self.name for (lang, val) in self.translated_name.items(): msg += """ <name xml:lang="%s">%s</name>\n""" % (lang, val) msg += """ <description>%s</description>\n""" % self.description for (lang, val) in self.translated_description.items(): msg += """ <description xml:lang="%s">%s</description>\n""" % (lang, val) msg += """ <grouplist>\n""" for grp in self.groups: msg += """ <groupid>%s</groupid>\n""" % grp msg += """ </grouplist>\n""" msg += """ <optionlist>\n""" for grp in self.options: if grp in self.defaultoptions: msg += """ <groupid default="true">%s</groupid>\n""" % grp else: msg += """ <groupid>%s</groupid>\n""" % grp msg += """ </optionlist>\n""" msg += """ </environment>\n""" return msg class Category(CompsObj): """ Category object parsed from group data in each repo. and merged. """ def __init__(self, elem=None): self.name = "" self.categoryid = None self.description = "" self.translated_name = {} self.translated_description = {} self.display_order = 1024 self._groups = {} if elem: self.parse(elem) def _groupiter(self): return self._groups.keys() groups = property(_groupiter) def parse(self, elem): for child in elem: if child.tag == 'id': myid = child.text if self.categoryid is not None: raise CompsException self.categoryid = myid elif child.tag == 'name': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_name[lang] = text else: self.name = text elif child.tag == 'description': text = child.text if text: text = text.encode('utf8') lang = child.attrib.get(lang_attr) if lang: self.translated_description[lang] = text else: self.description = text elif child.tag == 'grouplist': self.parse_group_list(child) elif child.tag == 'display_order': self.display_order = parse_number(child.text) def parse_group_list(self, grouplist_elem): for child in grouplist_elem: if child.tag == 'groupid': groupid = child.text self._groups[groupid] = 1 def add(self, obj): """Add another category object to this object""" for grp in obj.groups: self._groups[grp] = 1 # name and description translations for lang in obj.translated_name: if lang not in self.translated_name: self.translated_name[lang] = obj.translated_name[lang] for lang in obj.translated_description: if lang not in self.translated_description: self.translated_description[lang] = obj.translated_description[lang] def xml(self): """write out an xml stanza for the category object""" msg =""" <category> <id>%s</id> <display_order>%s</display_order>\n""" % (self.categoryid, self.display_order) msg +=""" <name>%s</name>\n""" % self.name for (lang, val) in self.translated_name.items(): msg += """ <name xml:lang="%s">%s</name>\n""" % (lang, val) msg += """ <description>%s</description>\n""" % self.description for (lang, val) in self.translated_description.items(): msg += """ <description xml:lang="%s">%s</description>\n""" % (lang, val) msg += """ <grouplist>\n""" for grp in self.groups: msg += """ <groupid>%s</groupid>\n""" % grp msg += """ </grouplist>\n""" msg += """ </category>\n""" return msg class Langpacks(CompsObj): def __init__(self, elem=None): self.langpacks = [] self.name = "" # prevent CompsObj.__str__() throwing an AttributeError if elem is not None: self.parse(elem) def __getitem__(self, indx): return self.langpacks[indx] def __iter__(self): for i in self.langpacks: yield i def __len__(self): return len(self.langpacks) def add(self, name, install): langpack = { "name": name, "install": install, } self.langpacks.append(langpack) def parse(self, elem): for child in elem: if child.tag == "match": langpack = { "name": child.attrib.get("name"), "install": child.attrib.get("install"), } self.langpacks.append(langpack) else: raise CompsException("Unexpected element in <langpacks>: %s" % child.tag) self.name = elem.attrib.get("name") self.install = elem.attrib.get("install") def xml(self): """write out an xml stanza for the Langpacks object""" if not self.langpacks: return '' msg = ' <langpacks>\n' for i in self: msg += ' <match name="%s" install="%s"/>\n' % (i["name"], i["install"]) msg += ' </langpacks>\n' return msg class Comps(object): def __init__(self, overwrite_groups=False): self._groups = {} self._environments = {} self._categories = {} self._langpacks = Langpacks() self.compscount = 0 self.overwrite_groups = overwrite_groups self.compiled = False # have groups been compiled into avail/installed # lists, yet. def get_groups(self): grps = self._groups.values() grps.sort(key=lambda x: (x.display_order, x.name)) return grps def get_environments(self): environments = self._environments.values() environments.sort(key=lambda x: (x.display_order, x.name)) return environments def get_categories(self): cats = self._categories.values() cats.sort(key=lambda x: (x.display_order, x.name)) return cats def get_langpacks(self): return self._langpacks groups = property(get_groups) environments = property(get_environments) categories = property(get_categories) langpacks = property(get_langpacks) def has_group(self, grpid): exists = self.return_groups(grpid) if exists: return True return False def return_group(self, grpid): """Return the first group which matches""" grps = self.return_groups(grpid) if grps: return grps[0] return None def return_groups(self, group_pattern, case_sensitive=False): """return all groups which match either by glob or exact match""" returns = {} if not group_pattern: return [] for item in group_pattern.split(','): item = item.strip() if item in self._groups: thisgroup = self._groups[item] returns[thisgroup.groupid] = thisgroup continue if case_sensitive: match = re.compile(fnmatch.translate(item)).match else: match = re.compile(fnmatch.translate(item), flags=re.I).match done = False for group in self.groups: for name in group.name, group.groupid, group.ui_name: if match(name): done = True returns[group.groupid] = group break if done: continue # If we didn't match to anything in the current locale, try others for group in self.groups: for name in group.translated_name.values(): if match(name): returns[group.groupid] = group break return returns.values() def has_environment(self, environmentid): exists = self.return_environments(environmentid) if exists: return True return False def return_environment(self, environmentid): """Return the first group which matches""" environments = self.return_environments(environmentid) if environments: return environments[0] return None def return_environments(self, env_pattern, case_sensitive=False): """return all environments which match either by glob or exact match""" returns = {} if not env_pattern: return [] for item in env_pattern.split(','): item = item.strip() if item in self._environments: env = self._environments[item] returns[env.environmentid] = env continue if case_sensitive: match = re.compile(fnmatch.translate(item)).match else: match = re.compile(fnmatch.translate(item), flags=re.I).match done = False for env in self.environments: for name in env.name, env.environmentid, env.ui_name: if match(name): done = True returns[env.environmentid] = env break if done: continue # If we didn't match to anything in the current locale, try others for env in self.environments: for name in env.translated_name.values(): if match(name): returns[env.environmentid] = env break return returns.values() # This is close to returnPackages() etc. API ... need to std. these names # the above return_groups uses different, but equal, API. def return_categories(self, pattern, ignore_case=True): """return all categories which match either by glob or exact match""" returns = {} for item in pattern.split(','): item = item.strip() if item in self._categories: cat = self._categories[item] returns[cat.categoryid] = cat continue if not ignore_case: match = re.compile(fnmatch.translate(item)).match else: match = re.compile(fnmatch.translate(item), flags=re.I).match done = False for cat in self.categories: for name in cat.name, cat.categoryid, cat.ui_name: if match(name): done = True returns[cat.categoryid] = cat break if done: continue for cat in self.categories: for name in cat.translated_name.values(): if match(name): returns[cat.categoryid] = cat break return returns.values() def add_group(self, group): if group.groupid in self._groups: thatgroup = self._groups[group.groupid] if thatgroup._weak: # If what we had was weak, use this one and merge the weak one. tmp = group group = thatgroup thatgroup = self._groups[group.groupid] = tmp thatgroup.add(group) else: self._groups[group.groupid] = group def add_environment(self, environment): if environment.environmentid in self._environments: env = self._environments[environment.environmentid] if env._weak: # If what we had was weak, use this one and merge the weak one. tmp = environment environment = env env = self._environments[environment.environmentid] = tmp env.add(environment) else: self._environments[environment.environmentid] = environment def add_category(self, category): if category.categoryid in self._categories: thatcat = self._categories[category.categoryid] thatcat.add(category) else: self._categories[category.categoryid] = category def add_langpack(self, name, install): self._langpacks.add(name, install) def add(self, srcfile = None): if not srcfile: raise CompsException if type(srcfile) in types.StringTypes: # srcfile is a filename string try: infile = open(srcfile, 'rt') except IOError, e: raise CompsException, 'open(%s): #%u %s' % (srcfile, e.errno, e.strerror) else: # srcfile is a file object infile = srcfile self.compscount += 1 self.compiled = False parser = iterparse(infile) try: for event, elem in parser: if elem.tag == "group": group = Group(elem) self.add_group(group) if elem.tag == "environment": environment = Environment(elem) self.add_environment(environment) if elem.tag == "category": category = Category(elem) self.add_category(category) if elem.tag == "langpacks": self._langpacks.parse(elem) except SyntaxError, e: raise CompsException, "comps file is empty/damaged" del parser def compile(self, pkgtuplist): """ compile the groups into installed/available groups """ # convert the tuple list to a simple dict of pkgnames inst_pkg_names = {} for (n,a,e,v,r) in pkgtuplist: inst_pkg_names[n] = 1 for group in self.groups: # if there are mandatory packages in the group, then make sure # they're all installed. if any are missing, then the group # isn't installed. if len(group.mandatory_packages) > 0: group.installed = True for pkgname in group.mandatory_packages: if pkgname not in inst_pkg_names: group.installed = False break # if it doesn't have any of those then see if it has ANY of the # optional/default packages installed. # If so - then the group is installed else: check_pkgs = group.optional_packages.keys() + group.default_packages.keys() + group.conditional_packages.keys() group.installed = False for pkgname in check_pkgs: if pkgname in inst_pkg_names: group.installed = True break # Now do basically the same thing for evgroups. inst_grp_names = {} for group in self.groups: inst_grp_names[group.groupid] = group.installed for evgroup in self.environments: if evgroup.groups: evgroup.installed = True for grpname in evgroup.groups: if not inst_grp_names.get(grpname): evgroup.installed = False break else: evgroup.installed = False for grpname in evgroup.options: if grpname in inst_grp_names: evgroup.installed = True break self.compiled = True def xml(self): """returns the xml of the comps files in this class, merged""" if not self._groups and not self._categories and \ not self._environments and not len(self._langpacks): return "" msg = """<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE comps PUBLIC "-//Red Hat, Inc.//DTD Comps info//EN" "comps.dtd"> <comps> """ for g in self.get_groups(): msg += g.xml() for c in self.get_categories(): msg += c.xml() for e in self.get_environments(): msg += e.xml() msg += self.get_langpacks().xml() msg += """\n</comps>\n""" return msg def main(): try: print sys.argv[1] p = Comps() for srcfile in sys.argv[1:]: p.add(srcfile) print print "===== GROUPS =====" for group in p.groups: print "%s (id: %s)" % (group, group.groupid) for pkg in group.packages: print ' ' + pkg print print "===== ENVIRONMENTS =====" for environment in p.environments: print "%s (id: %s)" % (environment.name, environment.environmentid) for group in environment.groups: print ' ' + group for group in environment.options: print ' *' + group print print "===== CATEGORIES =====" for category in p.categories: print "%s (id: %s)" % (category.name, category.categoryid) for group in category.groups: print ' ' + group print print "===== LANGPACKS =====" for langpack in p.langpacks: print ' %s (%s)' % (langpack["name"], langpack["install"]) except IOError: print >> sys.stderr, "newcomps.py: No such file:\'%s\'" % sys.argv[1] sys.exit(1) if __name__ == '__main__': main()