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# -*- coding: utf-8 -*-
"""
babel.messages.frontend
~~~~~~~~~~~~~~~~~~~~~~~
Frontends for the message extraction functionality.
:copyright: (c) 2013-2021 by the Babel Team.
:license: BSD, see LICENSE for more details.
"""
from __future__ import print_function
import logging
import optparse
import os
import re
import shutil
import sys
import tempfile
from collections import OrderedDict
from datetime import datetime
from locale import getpreferredencoding
from babel import __version__ as VERSION
from babel import Locale, localedata
from babel._compat import StringIO, string_types, text_type, PY2
from babel.core import UnknownLocaleError
from babel.messages.catalog import Catalog
from babel.messages.extract import DEFAULT_KEYWORDS, DEFAULT_MAPPING, check_and_call_extract_file, extract_from_dir
from babel.messages.mofile import write_mo
from babel.messages.pofile import read_po, write_po
from babel.util import LOCALTZ
from distutils import log as distutils_log
from distutils.cmd import Command as _Command
from distutils.errors import DistutilsOptionError, DistutilsSetupError
try:
from ConfigParser import RawConfigParser
except ImportError:
from configparser import RawConfigParser
po_file_read_mode = ('rU' if PY2 else 'r')
def listify_value(arg, split=None):
"""
Make a list out of an argument.
Values from `distutils` argument parsing are always single strings;
values from `optparse` parsing may be lists of strings that may need
to be further split.
No matter the input, this function returns a flat list of whitespace-trimmed
strings, with `None` values filtered out.
>>> listify_value("foo bar")
['foo', 'bar']
>>> listify_value(["foo bar"])
['foo', 'bar']
>>> listify_value([["foo"], "bar"])
['foo', 'bar']
>>> listify_value([["foo"], ["bar", None, "foo"]])
['foo', 'bar', 'foo']
>>> listify_value("foo, bar, quux", ",")
['foo', 'bar', 'quux']
:param arg: A string or a list of strings
:param split: The argument to pass to `str.split()`.
:return:
"""
out = []
if not isinstance(arg, (list, tuple)):
arg = [arg]
for val in arg:
if val is None:
continue
if isinstance(val, (list, tuple)):
out.extend(listify_value(val, split=split))
continue
out.extend(s.strip() for s in text_type(val).split(split))
assert all(isinstance(val, string_types) for val in out)
return out
class Command(_Command):
# This class is a small shim between Distutils commands and
# optparse option parsing in the frontend command line.
#: Option name to be input as `args` on the script command line.
as_args = None
#: Options which allow multiple values.
#: This is used by the `optparse` transmogrification code.
multiple_value_options = ()
#: Options which are booleans.
#: This is used by the `optparse` transmogrification code.
# (This is actually used by distutils code too, but is never
# declared in the base class.)
boolean_options = ()
#: Option aliases, to retain standalone command compatibility.
#: Distutils does not support option aliases, but optparse does.
#: This maps the distutils argument name to an iterable of aliases
#: that are usable with optparse.
option_aliases = {}
#: Choices for options that needed to be restricted to specific
#: list of choices.
option_choices = {}
#: Log object. To allow replacement in the script command line runner.
log = distutils_log
def __init__(self, dist=None):
# A less strict version of distutils' `__init__`.
self.distribution = dist
self.initialize_options()
self._dry_run = None
self.verbose = False
self.force = None
self.help = 0
self.finalized = 0
class compile_catalog(Command):
"""Catalog compilation command for use in ``setup.py`` scripts.
If correctly installed, this command is available to Setuptools-using
setup scripts automatically. For projects using plain old ``distutils``,
the command needs to be registered explicitly in ``setup.py``::
from babel.messages.frontend import compile_catalog
setup(
...
cmdclass = {'compile_catalog': compile_catalog}
)
.. versionadded:: 0.9
"""
description = 'compile message catalogs to binary MO files'
user_options = [
('domain=', 'D',
"domains of PO files (space separated list, default 'messages')"),
('directory=', 'd',
'path to base directory containing the catalogs'),
('input-file=', 'i',
'name of the input file'),
('output-file=', 'o',
"name of the output file (default "
"'<output_dir>/<locale>/LC_MESSAGES/<domain>.mo')"),
('locale=', 'l',
'locale of the catalog to compile'),
('use-fuzzy', 'f',
'also include fuzzy translations'),
('statistics', None,
'print statistics about translations')
]
boolean_options = ['use-fuzzy', 'statistics']
def initialize_options(self):
self.domain = 'messages'
self.directory = None
self.input_file = None
self.output_file = None
self.locale = None
self.use_fuzzy = False
self.statistics = False
def finalize_options(self):
self.domain = listify_value(self.domain)
if not self.input_file and not self.directory:
raise DistutilsOptionError('you must specify either the input file '
'or the base directory')
if not self.output_file and not self.directory:
raise DistutilsOptionError('you must specify either the output file '
'or the base directory')
def run(self):
n_errors = 0
for domain in self.domain:
for catalog, errors in self._run_domain(domain).items():
n_errors += len(errors)
if n_errors:
self.log.error('%d errors encountered.' % n_errors)
return (1 if n_errors else 0)
def _run_domain(self, domain):
po_files = []
mo_files = []
if not self.input_file:
if self.locale:
po_files.append((self.locale,
os.path.join(self.directory, self.locale,
'LC_MESSAGES',
domain + '.po')))
mo_files.append(os.path.join(self.directory, self.locale,
'LC_MESSAGES',
domain + '.mo'))
else:
for locale in os.listdir(self.directory):
po_file = os.path.join(self.directory, locale,
'LC_MESSAGES', domain + '.po')
if os.path.exists(po_file):
po_files.append((locale, po_file))
mo_files.append(os.path.join(self.directory, locale,
'LC_MESSAGES',
domain + '.mo'))
else:
po_files.append((self.locale, self.input_file))
if self.output_file:
mo_files.append(self.output_file)
else:
mo_files.append(os.path.join(self.directory, self.locale,
'LC_MESSAGES',
domain + '.mo'))
if not po_files:
raise DistutilsOptionError('no message catalogs found')
catalogs_and_errors = {}
for idx, (locale, po_file) in enumerate(po_files):
mo_file = mo_files[idx]
with open(po_file, 'rb') as infile:
catalog = read_po(infile, locale)
if self.statistics:
translated = 0
for message in list(catalog)[1:]:
if message.string:
translated += 1
percentage = 0
if len(catalog):
percentage = translated * 100 // len(catalog)
self.log.info(
'%d of %d messages (%d%%) translated in %s',
translated, len(catalog), percentage, po_file
)
if catalog.fuzzy and not self.use_fuzzy:
self.log.info('catalog %s is marked as fuzzy, skipping', po_file)
continue
catalogs_and_errors[catalog] = catalog_errors = list(catalog.check())
for message, errors in catalog_errors:
for error in errors:
self.log.error(
'error: %s:%d: %s', po_file, message.lineno, error
)
self.log.info('compiling catalog %s to %s', po_file, mo_file)
with open(mo_file, 'wb') as outfile:
write_mo(outfile, catalog, use_fuzzy=self.use_fuzzy)
return catalogs_and_errors
class extract_messages(Command):
"""Message extraction command for use in ``setup.py`` scripts.
If correctly installed, this command is available to Setuptools-using
setup scripts automatically. For projects using plain old ``distutils``,
the command needs to be registered explicitly in ``setup.py``::
from babel.messages.frontend import extract_messages
setup(
...
cmdclass = {'extract_messages': extract_messages}
)
"""
description = 'extract localizable strings from the project code'
user_options = [
('charset=', None,
'charset to use in the output file (default "utf-8")'),
('keywords=', 'k',
'space-separated list of keywords to look for in addition to the '
'defaults (may be repeated multiple times)'),
('no-default-keywords', None,
'do not include the default keywords'),
('mapping-file=', 'F',
'path to the mapping configuration file'),
('no-location', None,
'do not include location comments with filename and line number'),
('add-location=', None,
'location lines format. If it is not given or "full", it generates '
'the lines with both file name and line number. If it is "file", '
'the line number part is omitted. If it is "never", it completely '
'suppresses the lines (same as --no-location).'),
('omit-header', None,
'do not include msgid "" entry in header'),
('output-file=', 'o',
'name of the output file'),
('width=', 'w',
'set output line width (default 76)'),
('no-wrap', None,
'do not break long message lines, longer than the output line width, '
'into several lines'),
('sort-output', None,
'generate sorted output (default False)'),
('sort-by-file', None,
'sort output by file location (default False)'),
('msgid-bugs-address=', None,
'set report address for msgid'),
('copyright-holder=', None,
'set copyright holder in output'),
('project=', None,
'set project name in output'),
('version=', None,
'set project version in output'),
('add-comments=', 'c',
'place comment block with TAG (or those preceding keyword lines) in '
'output file. Separate multiple TAGs with commas(,)'), # TODO: Support repetition of this argument
('strip-comments', 's',
'strip the comment TAGs from the comments.'),
('input-paths=', None,
'files or directories that should be scanned for messages. Separate multiple '
'files or directories with commas(,)'), # TODO: Support repetition of this argument
('input-dirs=', None, # TODO (3.x): Remove me.
'alias for input-paths (does allow files as well as directories).'),
]
boolean_options = [
'no-default-keywords', 'no-location', 'omit-header', 'no-wrap',
'sort-output', 'sort-by-file', 'strip-comments'
]
as_args = 'input-paths'
multiple_value_options = ('add-comments', 'keywords')
option_aliases = {
'keywords': ('--keyword',),
'mapping-file': ('--mapping',),
'output-file': ('--output',),
'strip-comments': ('--strip-comment-tags',),
}
option_choices = {
'add-location': ('full', 'file', 'never',),
}
def initialize_options(self):
self.charset = 'utf-8'
self.keywords = None
self.no_default_keywords = False
self.mapping_file = None
self.no_location = False
self.add_location = None
self.omit_header = False
self.output_file = None
self.input_dirs = None
self.input_paths = None
self.width = None
self.no_wrap = False
self.sort_output = False
self.sort_by_file = False
self.msgid_bugs_address = None
self.copyright_holder = None
self.project = None
self.version = None
self.add_comments = None
self.strip_comments = False
self.include_lineno = True
def finalize_options(self):
if self.input_dirs:
if not self.input_paths:
self.input_paths = self.input_dirs
else:
raise DistutilsOptionError(
'input-dirs and input-paths are mutually exclusive'
)
if self.no_default_keywords:
keywords = {}
else:
keywords = DEFAULT_KEYWORDS.copy()
keywords.update(parse_keywords(listify_value(self.keywords)))
self.keywords = keywords
if not self.keywords:
raise DistutilsOptionError('you must specify new keywords if you '
'disable the default ones')
if not self.output_file:
raise DistutilsOptionError('no output file specified')
if self.no_wrap and self.width:
raise DistutilsOptionError("'--no-wrap' and '--width' are mutually "
"exclusive")
if not self.no_wrap and not self.width:
self.width = 76
elif self.width is not None:
self.width = int(self.width)
if self.sort_output and self.sort_by_file:
raise DistutilsOptionError("'--sort-output' and '--sort-by-file' "
"are mutually exclusive")
if self.input_paths:
if isinstance(self.input_paths, string_types):
self.input_paths = re.split(r',\s*', self.input_paths)
elif self.distribution is not None:
self.input_paths = dict.fromkeys([
k.split('.', 1)[0]
for k in (self.distribution.packages or ())
]).keys()
else:
self.input_paths = []
if not self.input_paths:
raise DistutilsOptionError("no input files or directories specified")
for path in self.input_paths:
if not os.path.exists(path):
raise DistutilsOptionError("Input path: %s does not exist" % path)
self.add_comments = listify_value(self.add_comments or (), ",")
if self.distribution:
if not self.project:
self.project = self.distribution.get_name()
if not self.version:
self.version = self.distribution.get_version()
if self.add_location == 'never':
self.no_location = True
elif self.add_location == 'file':
self.include_lineno = False
def run(self):
mappings = self._get_mappings()
with open(self.output_file, 'wb') as outfile:
catalog = Catalog(project=self.project,
version=self.version,
msgid_bugs_address=self.msgid_bugs_address,
copyright_holder=self.copyright_holder,
charset=self.charset)
for path, method_map, options_map in mappings:
def callback(filename, method, options):
if method == 'ignore':
return
# If we explicitly provide a full filepath, just use that.
# Otherwise, path will be the directory path and filename
# is the relative path from that dir to the file.
# So we can join those to get the full filepath.
if os.path.isfile(path):
filepath = path
else:
filepath = os.path.normpath(os.path.join(path, filename))
optstr = ''
if options:
optstr = ' (%s)' % ', '.join(['%s="%s"' % (k, v) for
k, v in options.items()])
self.log.info('extracting messages from %s%s', filepath, optstr)
if os.path.isfile(path):
current_dir = os.getcwd()
extracted = check_and_call_extract_file(
path, method_map, options_map,
callback, self.keywords, self.add_comments,
self.strip_comments, current_dir
)
else:
extracted = extract_from_dir(
path, method_map, options_map,
keywords=self.keywords,
comment_tags=self.add_comments,
callback=callback,
strip_comment_tags=self.strip_comments
)
for filename, lineno, message, comments, context in extracted:
if os.path.isfile(path):
filepath = filename # already normalized
else:
filepath = os.path.normpath(os.path.join(path, filename))
catalog.add(message, None, [(filepath, lineno)],
auto_comments=comments, context=context)
self.log.info('writing PO template file to %s', self.output_file)
write_po(outfile, catalog, width=self.width,
no_location=self.no_location,
omit_header=self.omit_header,
sort_output=self.sort_output,
sort_by_file=self.sort_by_file,
include_lineno=self.include_lineno)
def _get_mappings(self):
mappings = []
if self.mapping_file:
with open(self.mapping_file, po_file_read_mode) as fileobj:
method_map, options_map = parse_mapping(fileobj)
for path in self.input_paths:
mappings.append((path, method_map, options_map))
elif getattr(self.distribution, 'message_extractors', None):
message_extractors = self.distribution.message_extractors
for path, mapping in message_extractors.items():
if isinstance(mapping, string_types):
method_map, options_map = parse_mapping(StringIO(mapping))
else:
method_map, options_map = [], {}
for pattern, method, options in mapping:
method_map.append((pattern, method))
options_map[pattern] = options or {}
mappings.append((path, method_map, options_map))
else:
for path in self.input_paths:
mappings.append((path, DEFAULT_MAPPING, {}))
return mappings
def check_message_extractors(dist, name, value):
"""Validate the ``message_extractors`` keyword argument to ``setup()``.
:param dist: the distutils/setuptools ``Distribution`` object
:param name: the name of the keyword argument (should always be
"message_extractors")
:param value: the value of the keyword argument
:raise `DistutilsSetupError`: if the value is not valid
"""
assert name == 'message_extractors'
if not isinstance(value, dict):
raise DistutilsSetupError('the value of the "message_extractors" '
'parameter must be a dictionary')
class init_catalog(Command):
"""New catalog initialization command for use in ``setup.py`` scripts.
If correctly installed, this command is available to Setuptools-using
setup scripts automatically. For projects using plain old ``distutils``,
the command needs to be registered explicitly in ``setup.py``::
from babel.messages.frontend import init_catalog
setup(
...
cmdclass = {'init_catalog': init_catalog}
)
"""
description = 'create a new catalog based on a POT file'
user_options = [
('domain=', 'D',
"domain of PO file (default 'messages')"),
('input-file=', 'i',
'name of the input file'),
('output-dir=', 'd',
'path to output directory'),
('output-file=', 'o',
"name of the output file (default "
"'<output_dir>/<locale>/LC_MESSAGES/<domain>.po')"),
('locale=', 'l',
'locale for the new localized catalog'),
('width=', 'w',
'set output line width (default 76)'),
('no-wrap', None,
'do not break long message lines, longer than the output line width, '
'into several lines'),
]
boolean_options = ['no-wrap']
def initialize_options(self):
self.output_dir = None
self.output_file = None
self.input_file = None
self.locale = None
self.domain = 'messages'
self.no_wrap = False
self.width = None
def finalize_options(self):
if not self.input_file:
raise DistutilsOptionError('you must specify the input file')
if not self.locale:
raise DistutilsOptionError('you must provide a locale for the '
'new catalog')
try:
self._locale = Locale.parse(self.locale)
except UnknownLocaleError as e:
raise DistutilsOptionError(e)
if not self.output_file and not self.output_dir:
raise DistutilsOptionError('you must specify the output directory')
if not self.output_file:
self.output_file = os.path.join(self.output_dir, self.locale,
'LC_MESSAGES', self.domain + '.po')
if not os.path.exists(os.path.dirname(self.output_file)):
os.makedirs(os.path.dirname(self.output_file))
if self.no_wrap and self.width:
raise DistutilsOptionError("'--no-wrap' and '--width' are mutually "
"exclusive")
if not self.no_wrap and not self.width:
self.width = 76
elif self.width is not None:
self.width = int(self.width)
def run(self):
self.log.info(
'creating catalog %s based on %s', self.output_file, self.input_file
)
with open(self.input_file, 'rb') as infile:
# Although reading from the catalog template, read_po must be fed
# the locale in order to correctly calculate plurals
catalog = read_po(infile, locale=self.locale)
catalog.locale = self._locale
catalog.revision_date = datetime.now(LOCALTZ)
catalog.fuzzy = False
with open(self.output_file, 'wb') as outfile:
write_po(outfile, catalog, width=self.width)
class update_catalog(Command):
"""Catalog merging command for use in ``setup.py`` scripts.
If correctly installed, this command is available to Setuptools-using
setup scripts automatically. For projects using plain old ``distutils``,
the command needs to be registered explicitly in ``setup.py``::
from babel.messages.frontend import update_catalog
setup(
...
cmdclass = {'update_catalog': update_catalog}
)
.. versionadded:: 0.9
"""
description = 'update message catalogs from a POT file'
user_options = [
('domain=', 'D',
"domain of PO file (default 'messages')"),
('input-file=', 'i',
'name of the input file'),
('output-dir=', 'd',
'path to base directory containing the catalogs'),
('output-file=', 'o',
"name of the output file (default "
"'<output_dir>/<locale>/LC_MESSAGES/<domain>.po')"),
('omit-header', None,
"do not include msgid "" entry in header"),
('locale=', 'l',
'locale of the catalog to compile'),
('width=', 'w',
'set output line width (default 76)'),
('no-wrap', None,
'do not break long message lines, longer than the output line width, '
'into several lines'),
('ignore-obsolete=', None,
'whether to omit obsolete messages from the output'),
('no-fuzzy-matching', 'N',
'do not use fuzzy matching'),
('update-header-comment', None,
'update target header comment'),
('previous', None,
'keep previous msgids of translated messages'),
]
boolean_options = [
'omit-header', 'no-wrap', 'ignore-obsolete', 'no-fuzzy-matching',
'previous', 'update-header-comment',
]
def initialize_options(self):
self.domain = 'messages'
self.input_file = None
self.output_dir = None
self.output_file = None
self.omit_header = False
self.locale = None
self.width = None
self.no_wrap = False
self.ignore_obsolete = False
self.no_fuzzy_matching = False
self.update_header_comment = False
self.previous = False
def finalize_options(self):
if not self.input_file:
raise DistutilsOptionError('you must specify the input file')
if not self.output_file and not self.output_dir:
raise DistutilsOptionError('you must specify the output file or '
'directory')
if self.output_file and not self.locale:
raise DistutilsOptionError('you must specify the locale')
if self.no_wrap and self.width:
raise DistutilsOptionError("'--no-wrap' and '--width' are mutually "
"exclusive")
if not self.no_wrap and not self.width:
self.width = 76
elif self.width is not None:
self.width = int(self.width)
if self.no_fuzzy_matching and self.previous:
self.previous = False
def run(self):
po_files = []
if not self.output_file:
if self.locale:
po_files.append((self.locale,
os.path.join(self.output_dir, self.locale,
'LC_MESSAGES',
self.domain + '.po')))
else:
for locale in os.listdir(self.output_dir):
po_file = os.path.join(self.output_dir, locale,
'LC_MESSAGES',
self.domain + '.po')
if os.path.exists(po_file):
po_files.append((locale, po_file))
else:
po_files.append((self.locale, self.output_file))
if not po_files:
raise DistutilsOptionError('no message catalogs found')
domain = self.domain
if not domain:
domain = os.path.splitext(os.path.basename(self.input_file))[0]
with open(self.input_file, 'rb') as infile:
template = read_po(infile)
for locale, filename in po_files:
self.log.info('updating catalog %s based on %s', filename, self.input_file)
with open(filename, 'rb') as infile:
catalog = read_po(infile, locale=locale, domain=domain)
catalog.update(
template, self.no_fuzzy_matching,
update_header_comment=self.update_header_comment
)
tmpname = os.path.join(os.path.dirname(filename),
tempfile.gettempprefix() +
os.path.basename(filename))
try:
with open(tmpname, 'wb') as tmpfile:
write_po(tmpfile, catalog,
omit_header=self.omit_header,
ignore_obsolete=self.ignore_obsolete,
include_previous=self.previous, width=self.width)
except:
os.remove(tmpname)
raise
try:
os.rename(tmpname, filename)
except OSError:
# We're probably on Windows, which doesn't support atomic
# renames, at least not through Python
# If the error is in fact due to a permissions problem, that
# same error is going to be raised from one of the following
# operations
os.remove(filename)
shutil.copy(tmpname, filename)
os.remove(tmpname)
class CommandLineInterface(object):
"""Command-line interface.
This class provides a simple command-line interface to the message
extraction and PO file generation functionality.
"""
usage = '%%prog %s [options] %s'
version = '%%prog %s' % VERSION
commands = {
'compile': 'compile message catalogs to MO files',
'extract': 'extract messages from source files and generate a POT file',
'init': 'create new message catalogs from a POT file',
'update': 'update existing message catalogs from a POT file'
}
command_classes = {
'compile': compile_catalog,
'extract': extract_messages,
'init': init_catalog,
'update': update_catalog,
}
log = None # Replaced on instance level
def run(self, argv=None):
"""Main entry point of the command-line interface.
:param argv: list of arguments passed on the command-line
"""
if argv is None:
argv = sys.argv
self.parser = optparse.OptionParser(usage=self.usage % ('command', '[args]'),
version=self.version)
self.parser.disable_interspersed_args()
self.parser.print_help = self._help
self.parser.add_option('--list-locales', dest='list_locales',
action='store_true',
help="print all known locales and exit")
self.parser.add_option('-v', '--verbose', action='store_const',
dest='loglevel', const=logging.DEBUG,
help='print as much as possible')
self.parser.add_option('-q', '--quiet', action='store_const',
dest='loglevel', const=logging.ERROR,
help='print as little as possible')
self.parser.set_defaults(list_locales=False, loglevel=logging.INFO)
options, args = self.parser.parse_args(argv[1:])
self._configure_logging(options.loglevel)
if options.list_locales:
identifiers = localedata.locale_identifiers()
longest = max([len(identifier) for identifier in identifiers])
identifiers.sort()
format = u'%%-%ds %%s' % (longest + 1)
for identifier in identifiers:
locale = Locale.parse(identifier)
output = format % (identifier, locale.english_name)
print(output.encode(sys.stdout.encoding or
getpreferredencoding() or
'ascii', 'replace'))
return 0
if not args:
self.parser.error('no valid command or option passed. '
'Try the -h/--help option for more information.')
cmdname = args[0]
if cmdname not in self.commands:
self.parser.error('unknown command "%s"' % cmdname)
cmdinst = self._configure_command(cmdname, args[1:])
return cmdinst.run()
def _configure_logging(self, loglevel):
self.log = logging.getLogger('babel')
self.log.setLevel(loglevel)
# Don't add a new handler for every instance initialization (#227), this
# would cause duplicated output when the CommandLineInterface as an
# normal Python class.
if self.log.handlers:
handler = self.log.handlers[0]
else:
handler = logging.StreamHandler()
self.log.addHandler(handler)
handler.setLevel(loglevel)
formatter = logging.Formatter('%(message)s')
handler.setFormatter(formatter)
def _help(self):
print(self.parser.format_help())
print("commands:")
longest = max([len(command) for command in self.commands])
format = " %%-%ds %%s" % max(8, longest + 1)
commands = sorted(self.commands.items())
for name, description in commands:
print(format % (name, description))
def _configure_command(self, cmdname, argv):
"""
:type cmdname: str
:type argv: list[str]
"""
cmdclass = self.command_classes[cmdname]
cmdinst = cmdclass()
if self.log:
cmdinst.log = self.log # Use our logger, not distutils'.
assert isinstance(cmdinst, Command)
cmdinst.initialize_options()
parser = optparse.OptionParser(
usage=self.usage % (cmdname, ''),
description=self.commands[cmdname]
)
as_args = getattr(cmdclass, "as_args", ())
for long, short, help in cmdclass.user_options:
name = long.strip("=")
default = getattr(cmdinst, name.replace('-', '_'))
strs = ["--%s" % name]
if short:
strs.append("-%s" % short)
strs.extend(cmdclass.option_aliases.get(name, ()))
choices = cmdclass.option_choices.get(name, None)
if name == as_args:
parser.usage += "<%s>" % name
elif name in cmdclass.boolean_options:
parser.add_option(*strs, action="store_true", help=help)
elif name in cmdclass.multiple_value_options:
parser.add_option(*strs, action="append", help=help, choices=choices)
else:
parser.add_option(*strs, help=help, default=default, choices=choices)
options, args = parser.parse_args(argv)
if as_args:
setattr(options, as_args.replace('-', '_'), args)
for key, value in vars(options).items():
setattr(cmdinst, key, value)
try:
cmdinst.ensure_finalized()
except DistutilsOptionError as err:
parser.error(str(err))
return cmdinst
def main():
return CommandLineInterface().run(sys.argv)
def parse_mapping(fileobj, filename=None):
"""Parse an extraction method mapping from a file-like object.
>>> buf = StringIO('''
... [extractors]
... custom = mypackage.module:myfunc
...
... # Python source files
... [python: **.py]
...
... # Genshi templates
... [genshi: **/templates/**.html]
... include_attrs =
... [genshi: **/templates/**.txt]
... template_class = genshi.template:TextTemplate
... encoding = latin-1
...
... # Some custom extractor
... [custom: **/custom/*.*]
... ''')
>>> method_map, options_map = parse_mapping(buf)
>>> len(method_map)
4
>>> method_map[0]
('**.py', 'python')
>>> options_map['**.py']
{}
>>> method_map[1]
('**/templates/**.html', 'genshi')
>>> options_map['**/templates/**.html']['include_attrs']
''
>>> method_map[2]
('**/templates/**.txt', 'genshi')
>>> options_map['**/templates/**.txt']['template_class']
'genshi.template:TextTemplate'
>>> options_map['**/templates/**.txt']['encoding']
'latin-1'
>>> method_map[3]
('**/custom/*.*', 'mypackage.module:myfunc')
>>> options_map['**/custom/*.*']
{}
:param fileobj: a readable file-like object containing the configuration
text to parse
:see: `extract_from_directory`
"""
extractors = {}
method_map = []
options_map = {}
parser = RawConfigParser()
parser._sections = OrderedDict(parser._sections) # We need ordered sections
if PY2:
parser.readfp(fileobj, filename)
else:
parser.read_file(fileobj, filename)
for section in parser.sections():
if section == 'extractors':
extractors = dict(parser.items(section))
else:
method, pattern = [part.strip() for part in section.split(':', 1)]
method_map.append((pattern, method))
options_map[pattern] = dict(parser.items(section))
if extractors:
for idx, (pattern, method) in enumerate(method_map):
if method in extractors:
method = extractors[method]
method_map[idx] = (pattern, method)
return method_map, options_map
def parse_keywords(strings=[]):
"""Parse keywords specifications from the given list of strings.
>>> kw = sorted(parse_keywords(['_', 'dgettext:2', 'dngettext:2,3', 'pgettext:1c,2']).items())
>>> for keyword, indices in kw:
... print((keyword, indices))
('_', None)
('dgettext', (2,))
('dngettext', (2, 3))
('pgettext', ((1, 'c'), 2))
"""
keywords = {}
for string in strings:
if ':' in string:
funcname, indices = string.split(':')
else:
funcname, indices = string, None
if funcname not in keywords:
if indices:
inds = []
for x in indices.split(','):
if x[-1] == 'c':
inds.append((int(x[:-1]), 'c'))
else:
inds.append(int(x))
indices = tuple(inds)
keywords[funcname] = indices
return keywords
if __name__ == '__main__':
main()