[server] improve the speed of setting relations between entities (closes #1625257)
The main idea is to add methods equivalent to session.add_relation and
repository.glob_add_relation which handle several relations in one call. Speed
gain results from:
* using cursor.executemany to run SQL statements
* factorizing some code which otherwise has to be performed for each relation,
such as context manager creation before calling hooks or to enable security,
creation of the EditedEntity instance (when several inlined relations are set
on a single entity, and consequently when refreshing the cached entity)
benchmark runs 1.1x faster for non inlined entities and 125x faster for inlined
entities :-)
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""Some i18n/gettext utilities."""
__docformat__ = "restructuredtext en"
import re
import os
from os.path import join, basename, splitext, exists
from glob import glob
from cubicweb.toolsutils import create_dir
def extract_from_tal(files, output_file):
"""extract i18n strings from tal and write them into the given output file
using standard python gettext marker (_)
"""
output = open(output_file, 'w')
for filepath in files:
for match in re.finditer('i18n:(content|replace)="([^"]+)"', open(filepath).read()):
print >> output, '_("%s")' % match.group(2)
output.close()
def add_msg(w, msgid, msgctx=None):
"""write an empty pot msgid definition"""
if isinstance(msgid, unicode):
msgid = msgid.encode('utf-8')
if msgctx:
if isinstance(msgctx, unicode):
msgctx = msgctx.encode('utf-8')
w('msgctxt "%s"\n' % msgctx)
msgid = msgid.replace('"', r'\"').splitlines()
if len(msgid) > 1:
w('msgid ""\n')
for line in msgid:
w('"%s"' % line.replace('"', r'\"'))
else:
w('msgid "%s"\n' % msgid[0])
w('msgstr ""\n\n')
def execute(cmd):
"""display the command, execute it and raise an Exception if returned
status != 0
"""
from subprocess import call
print cmd.replace(os.getcwd() + os.sep, '')
status = call(cmd, shell=True)
if status != 0:
raise Exception('status = %s' % status)
def available_catalogs(i18ndir=None):
if i18ndir is None:
wildcard = '*.po'
else:
wildcard = join(i18ndir, '*.po')
for popath in glob(wildcard):
lang = splitext(basename(popath))[0]
yield lang, popath
def compile_i18n_catalogs(sourcedirs, destdir, langs):
"""generate .mo files for a set of languages into the `destdir` i18n directory
"""
from logilab.common.fileutils import ensure_fs_mode
print '-> compiling message catalogs to %s' % destdir
errors = []
for lang in langs:
langdir = join(destdir, lang, 'LC_MESSAGES')
if not exists(langdir):
create_dir(langdir)
pofiles = [join(path, '%s.po' % lang) for path in sourcedirs]
pofiles = [pof for pof in pofiles if exists(pof)]
mergedpo = join(destdir, '%s_merged.po' % lang)
try:
# merge instance/cubes messages catalogs with the stdlib's one
execute('msgcat --use-first --sort-output --strict -o "%s" %s'
% (mergedpo, ' '.join('"%s"' % f for f in pofiles)))
# make sure the .mo file is writeable and compiles with *msgfmt*
applmo = join(destdir, lang, 'LC_MESSAGES', 'cubicweb.mo')
try:
ensure_fs_mode(applmo)
except OSError:
pass # suppose not exists
execute('msgfmt "%s" -o "%s"' % (mergedpo, applmo))
except Exception, ex:
errors.append('while handling language %s: %s' % (lang, ex))
try:
# clean everything
os.unlink(mergedpo)
except Exception:
continue
return errors