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# Copyright (C) 2011 Canonical Ltd
#
# 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 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
# The normalize function is taken from pygettext which is distributed
# with Python under the Python License, which is GPL compatible.
"""Extract docstrings from Bazaar commands.
"""
import inspect
import os
from bzrlib import (
commands as _mod_commands,
errors,
help_topics,
plugin,
)
from bzrlib.trace import (
mutter,
note,
)
def _escape(s):
s = (s.replace('\\', '\\\\')
.replace('\n', '\\n')
.replace('\r', '\\r')
.replace('\t', '\\t')
.replace('"', '\\"')
)
return s
def _normalize(s):
# This converts the various Python string types into a format that
# is appropriate for .po files, namely much closer to C style.
lines = s.split('\n')
if len(lines) == 1:
s = '"' + _escape(s) + '"'
else:
if not lines[-1]:
del lines[-1]
lines[-1] = lines[-1] + '\n'
lines = map(_escape, lines)
lineterm = '\\n"\n"'
s = '""\n"' + lineterm.join(lines) + '"'
return s
_FOUND_MSGID = None # set by entry function.
def _poentry(outf, path, lineno, s, comment=None):
if s in _FOUND_MSGID:
return
_FOUND_MSGID.add(s)
if comment is None:
comment = ''
else:
comment = "# %s\n" % comment
mutter("Exporting msg %r at line %d in %r", s[:20], lineno, path)
print >>outf, ('#: %s:%d\n' % (path, lineno) +
comment+
'msgid %s\n' % _normalize(s) +
'msgstr ""\n')
def _poentry_per_paragraph(outf, path, lineno, msgid, filter=lambda x: False):
# TODO: How to split long help?
paragraphs = msgid.split('\n\n')
for p in paragraphs:
if filter(p):
continue
_poentry(outf, path, lineno, p)
lineno += p.count('\n') + 2
_LAST_CACHE = _LAST_CACHED_SRC = None
def _offsets_of_literal(src):
global _LAST_CACHE, _LAST_CACHED_SRC
if src == _LAST_CACHED_SRC:
return _LAST_CACHE.copy()
import ast
root = ast.parse(src)
offsets = {}
for node in ast.walk(root):
if not isinstance(node, ast.Str):
continue
offsets[node.s] = node.lineno - node.s.count('\n')
_LAST_CACHED_SRC = src
_LAST_CACHE = offsets.copy()
return offsets
def _standard_options(outf):
from bzrlib.option import Option
src = inspect.findsource(Option)[0]
src = ''.join(src)
path = 'bzrlib/option.py'
offsets = _offsets_of_literal(src)
for name in sorted(Option.OPTIONS.keys()):
opt = Option.OPTIONS[name]
if getattr(opt, 'hidden', False):
continue
if getattr(opt, 'title', None):
lineno = offsets.get(opt.title, 9999)
if lineno == 9999:
note("%r is not found in bzrlib/option.py" % opt.title)
_poentry(outf, path, lineno, opt.title,
'title of %r option' % name)
if getattr(opt, 'help', None):
lineno = offsets.get(opt.help, 9999)
if lineno == 9999:
note("%r is not found in bzrlib/option.py" % opt.help)
_poentry(outf, path, lineno, opt.help,
'help of %r option' % name)
def _command_options(outf, path, cmd):
src, default_lineno = inspect.findsource(cmd.__class__)
offsets = _offsets_of_literal(''.join(src))
for opt in cmd.takes_options:
if isinstance(opt, str):
continue
if getattr(opt, 'hidden', False):
continue
name = opt.name
if getattr(opt, 'title', None):
lineno = offsets.get(opt.title, default_lineno)
_poentry(outf, path, lineno, opt.title,
'title of %r option of %r command' % (name, cmd.name()))
if getattr(opt, 'help', None):
lineno = offsets.get(opt.help, default_lineno)
_poentry(outf, path, lineno, opt.help,
'help of %r option of %r command' % (name, cmd.name()))
def _write_command_help(outf, cmd):
path = inspect.getfile(cmd.__class__)
if path.endswith('.pyc'):
path = path[:-1]
path = os.path.relpath(path)
src, lineno = inspect.findsource(cmd.__class__)
offsets = _offsets_of_literal(''.join(src))
lineno = offsets[cmd.__doc__]
doc = inspect.getdoc(cmd)
def filter(p):
# ':Usage:' has special meaning in help topics.
# This is usage example of command and should not be translated.
if p.splitlines()[0] == ':Usage:':
return True
_poentry_per_paragraph(outf, path, lineno, doc, filter)
_command_options(outf, path, cmd)
def _command_helps(outf):
"""Extract docstrings from path.
This respects the Bazaar cmdtable/table convention and will
only extract docstrings from functions mentioned in these tables.
"""
from glob import glob
# builtin commands
for cmd_name in _mod_commands.builtin_command_names():
command = _mod_commands.get_cmd_object(cmd_name, False)
if command.hidden:
continue
note("Exporting messages from builtin command: %s", cmd_name)
_write_command_help(outf, command)
plugin_path = plugin.get_core_plugin_path()
core_plugins = glob(plugin_path + '/*/__init__.py')
core_plugins = [os.path.basename(os.path.dirname(p))
for p in core_plugins]
# core plugins
for cmd_name in _mod_commands.plugin_command_names():
command = _mod_commands.get_cmd_object(cmd_name, False)
if command.hidden:
continue
if command.plugin_name() not in core_plugins:
# skip non-core plugins
# TODO: Support extracting from third party plugins.
continue
note("Exporting messages from plugin command: %s in %s",
cmd_name, command.plugin_name())
_write_command_help(outf, command)
def _error_messages(outf):
"""Extract fmt string from bzrlib.errors."""
path = errors.__file__
if path.endswith('.pyc'):
path = path[:-1]
offsets = _offsets_of_literal(open(path).read())
base_klass = errors.BzrError
for name in dir(errors):
klass = getattr(errors, name)
if not inspect.isclass(klass):
continue
if not issubclass(klass, base_klass):
continue
if klass is base_klass:
continue
if klass.internal_error:
continue
fmt = getattr(klass, "_fmt", None)
if fmt:
note("Exporting message from error: %s", name)
_poentry(outf, 'bzrlib/errors.py',
offsets.get(fmt, 9999), fmt)
def _help_topics(outf):
topic_registry = help_topics.topic_registry
for key in topic_registry.keys():
doc = topic_registry.get(key)
if isinstance(doc, str):
_poentry_per_paragraph(
outf,
'dummy/help_topics/'+key+'/detail.txt',
1, doc)
summary = topic_registry.get_summary(key)
if summary is not None:
_poentry(outf, 'dummy/help_topics/'+key+'/summary.txt',
1, summary)
def export_pot(outf):
global _FOUND_MSGID
_FOUND_MSGID = set()
_standard_options(outf)
_command_helps(outf)
_error_messages(outf)
# disable exporting help topics until we decide how to translate it.
#_help_topics(outf)
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