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#!/usr/bin/python
# Copyright (C) 2009 Canonical
#
# Authors:
# Michael Vogt
#
# 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; version 3.
#
# 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 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import apt
import glib
import locale
import logging
import os
import string
import sys
import xapian
from ConfigParser import RawConfigParser, NoOptionError
from glob import glob
from softwarecenter.enums import *
# weights for the different fields
WEIGHT_DESKTOP_NAME = 10
WEIGHT_DESKTOP_KEYWORD = 5
WEIGHT_DESKTOP_GENERICNAME = 3
WEIGHT_DESKTOP_COMMENT = 1
WEIGHT_APT_PKGNAME = 8
WEIGHT_APT_SUMMARY = 5
WEIGHT_APT_DESCRIPTION = 1
from locale import getdefaultlocale
import gettext
class DesktopConfigParser(RawConfigParser):
" thin wrapper that is tailored for xdg Desktop files "
DE = "Desktop Entry"
def get_desktop(self, key):
" get generic option under 'Desktop Entry'"
# first try dgettext
if self.has_option_desktop("X-Ubuntu-Gettext-Domain"):
value = self.get(self.DE, key)
if value:
domain = self.get(self.DE, "X-Ubuntu-Gettext-Domain")
translated_value = gettext.dgettext(domain, value)
if value != translated_value:
return translated_value
# then try the i18n version of the key (in [de_DE] or
# [de]) but ignore errors and return the untranslated one then
try:
locale = getdefaultlocale(('LANGUAGE','LANG','LC_CTYPE','LC_ALL'))[0]
if locale:
if self.has_option_desktop("%s[%s]" % (key, locale)):
return self.get(self.DE, "%s[%s]" % (key, locale))
if "_" in locale:
locale_short = locale.split("_")[0]
if self.has_option_desktop("%s[%s]" % (key, locale_short)):
return self.get(self.DE, "%s[%s]" % (key, locale_short))
except ValueError,e :
pass
# and then the untranslated field
return self.get(self.DE, key)
def has_option_desktop(self, key):
" test if there is the option under 'Desktop Entry'"
return self.has_option(self.DE, key)
def get_desktop_categories(self):
" get the list of categories for the desktop file "
categories = []
try:
categories_str = self.get_desktop("Categories")
for item in categories_str.split(";"):
if item:
categories.append(item)
except NoOptionError:
pass
return categories
def ascii_upper(key):
"""Translate an ASCII string to uppercase
in a locale-independent manner."""
ascii_trans_table = string.maketrans(string.ascii_lowercase,
string.ascii_uppercase)
return key.translate(ascii_trans_table)
def index_name(doc, name, term_generator):
""" index the name of the application """
doc.add_value(XAPIAN_VALUE_APPNAME, name)
doc.add_term("AA"+name)
w = globals()["WEIGHT_DESKTOP_NAME"]
term_generator.index_text_without_positions(name, w)
def update(db, cache, datadir=APP_INSTALL_PATH):
" index the desktop files in $datadir/desktop/*.desktop "
term_generator = xapian.TermGenerator()
seen = set()
context = glib.main_context_default()
popcon_max = 0
for desktopf in glob(datadir+"/desktop/*.desktop"):
logging.debug("processing %s" % desktopf)
# process events
while context.pending():
context.iteration()
parser = DesktopConfigParser()
doc = xapian.Document()
term_generator.set_document(doc)
try:
parser.read(desktopf)
# app name is the data
name = parser.get_desktop("Name")
if name in seen:
logging.debug("duplicated name '%s' (%s)" % (name, desktopf))
seen.add(name)
doc.set_data(name)
index_name(doc, name, term_generator)
# check if we should ignore this file
if parser.has_option_desktop("X-AppInstall-Ignore"):
ignore = parser.get_desktop("X-AppInstall-Ignore")
if ignore.strip().lower() == "true":
logging.debug(
"X-AppInstall-Ignore found for '%s'" % desktopf)
continue
# package name
pkgname = parser.get_desktop("X-AppInstall-Package")
doc.add_term("AP"+pkgname)
doc.add_value(XAPIAN_VALUE_PKGNAME, pkgname)
doc.add_value(XAPIAN_VALUE_DESKTOP_FILE, desktopf)
# pocket (main, restricted, ...)
if parser.has_option_desktop("X-AppInstall-Section"):
archive_section = parser.get_desktop("X-AppInstall-Section")
doc.add_term("AS"+archive_section)
doc.add_value(XAPIAN_VALUE_ARCHIVE_SECTION, archive_section)
# section (mail, base, ..)
if pkgname in cache and cache[pkgname].candidate:
section = cache[pkgname].candidate.section
doc.add_term("AE"+section)
# channel (third party stuff)
if parser.has_option_desktop("X-AppInstall-Channel"):
archive_channel = parser.get_desktop("X-AppInstall-Channel")
doc.add_term("AH"+archive_channel)
doc.add_value(XAPIAN_VALUE_ARCHIVE_CHANNEL, archive_channel)
# icon
if parser.has_option_desktop("Icon"):
icon = parser.get_desktop("Icon")
doc.add_value(XAPIAN_VALUE_ICON, icon)
# write out categories
for cat in parser.get_desktop_categories():
doc.add_term("AC"+cat.lower())
# get type (to distinguish between apps and packages
if parser.has_option_desktop("Type"):
type = parser.get_desktop("Type")
doc.add_term("AT"+type.lower())
# check gettext domain
if parser.has_option_desktop("X-Ubuntu-Gettext-Domain"):
domain = parser.get_desktop("X-Ubuntu-Gettext-Domain")
doc.add_value(XAPIAN_VALUE_GETTEXT_DOMAIN, domain)
# architecture
if parser.has_option_desktop("X-AppInstall-Architectures"):
arches = parser.get_desktop("X-AppInstall-Architectures")
doc.add_value(XAPIAN_VALUE_ARCHIVE_ARCH, arches)
# popcon
# FIXME: popularity not only based on popcon but also
# on archive section, third party app etc
if parser.has_option_desktop("X-AppInstall-Popcon"):
popcon = float(parser.get_desktop("X-AppInstall-Popcon"))
# sort_by_value uses string compare, so we need to pad here
doc.add_value(XAPIAN_VALUE_POPCON,
xapian.sortable_serialise(popcon))
popcon_max = max(popcon_max, popcon)
# comment goes into the summary data if there is one,
# other wise we try GenericName and if nothing else,
# the summary of the package
if parser.has_option_desktop("Comment"):
s = parser.get_desktop("Comment")
doc.add_value(XAPIAN_VALUE_SUMMARY, s)
elif parser.has_option_desktop("GenericName"):
s = parser.get_desktop("GenericName")
if s != name:
doc.add_value(XAPIAN_VALUE_SUMMARY, s)
elif pkgname in cache and cache[pkgname].candidate:
s = cache[pkgname].candidate.summary
doc.add_value(XAPIAN_VALUE_SUMMARY, s)
# add packagename as meta-data too
term_generator.index_text_without_positions(pkgname, WEIGHT_APT_PKGNAME)
# now add search data from the desktop file
for key in ["GenericName","Comment"]:
if not parser.has_option_desktop(key):
continue
s = parser.get_desktop(key)
# we need the ascii_upper here for e.g. turkish locales, see
# bug #581207
w = globals()["WEIGHT_DESKTOP_" + ascii_upper(key.replace(" ", ""))]
term_generator.index_text_without_positions(s, w)
# add data from the apt cache
if pkgname in cache and cache[pkgname].candidate:
s = cache[pkgname].candidate.summary
term_generator.index_text_without_positions(s, WEIGHT_APT_SUMMARY)
s = cache[pkgname].candidate.description
term_generator.index_text_without_positions(s, WEIGHT_APT_DESCRIPTION)
for origin in cache[pkgname].candidate.origins:
doc.add_term("XOA"+origin.archive)
doc.add_term("XOC"+origin.component)
doc.add_term("XOL"+origin.label)
doc.add_term("XOO"+origin.origin)
doc.add_term("XOS"+origin.site)
# add our keywords (with high priority)
if parser.has_option_desktop("X-AppInstall-Keywords"):
keywords = parser.get_desktop("X-AppInstall-Keywords")
for s in keywords.split(";"):
if s:
term_generator.index_text_without_positions(s, WEIGHT_DESKTOP_KEYWORD)
# FIXME: now do the same for the localizations in the
# desktop file
# FIXME3: add X-AppInstall-Section
except Exception, e:
# Print a warning, no error (Debian Bug #568941)
logging.warning("error processing: %s %s" % (desktopf, e))
continue
# now add it
db.add_document(doc)
# add db global meta-data
logging.debug("adding popcon_max_desktop '%s'" % popcon_max)
db.set_metadata("popcon_max_desktop", xapian.sortable_serialise(float(popcon_max)))
return True
def rebuild_database(pathname):
import apt
cache = apt.Cache(memonly=True)
# check permission
if not os.access(pathname, os.W_OK):
logging.warn("Cannot write to '%s'." % pathname)
logging.warn("Please check you have the relevant permissions.")
return False
# write it
db = xapian.WritableDatabase(pathname, xapian.DB_CREATE_OR_OVERWRITE)
update(db, cache)
# update the mo file stamp for the langpack checks
mofile = gettext.find("app-install-data")
if mofile:
mo_time = os.path.getctime(mofile)
db.set_metadata("app-install-mo-time", str(mo_time))
db.flush()
return True
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