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#! /opt/alt/python312/bin/python3.12
# -*- coding: iso-8859-1 -*-
# Originally written by Barry Warsaw <barry@python.org>
#
# Minimally patched to make it even more xgettext compatible
# by Peter Funk <pf@artcom-gmbh.de>
#
# 2002-11-22 J�rgen Hermann <jh@web.de>
# Added checks that _() only contains string literals, and
# command line args are resolved to module lists, i.e. you
# can now pass a filename, a module or package name, or a
# directory (including globbing chars, important for Win32).
# Made docstring fit in 80 chars wide displays using pydoc.
#
# for selftesting
try:
import fintl
_ = fintl.gettext
except ImportError:
_ = lambda s: s
__doc__ = _("""pygettext -- Python equivalent of xgettext(1)
Many systems (Solaris, Linux, Gnu) provide extensive tools that ease the
internationalization of C programs. Most of these tools are independent of
the programming language and can be used from within Python programs.
Martin von Loewis' work[1] helps considerably in this regard.
There's one problem though; xgettext is the program that scans source code
looking for message strings, but it groks only C (or C++). Python
introduces a few wrinkles, such as dual quoting characters, triple quoted
strings, and raw strings. xgettext understands none of this.
Enter pygettext, which uses Python's standard tokenize module to scan
Python source code, generating .pot files identical to what GNU xgettext[2]
generates for C and C++ code. From there, the standard GNU tools can be
used.
A word about marking Python strings as candidates for translation. GNU
xgettext recognizes the following keywords: gettext, dgettext, dcgettext,
and gettext_noop. But those can be a lot of text to include all over your
code. C and C++ have a trick: they use the C preprocessor. Most
internationalized C source includes a #define for gettext() to _() so that
what has to be written in the source is much less. Thus these are both
translatable strings:
gettext("Translatable String")
_("Translatable String")
Python of course has no preprocessor so this doesn't work so well. Thus,
pygettext searches only for _() by default, but see the -k/--keyword flag
below for how to augment this.
[1] https://www.python.org/workshops/1997-10/proceedings/loewis.html
[2] https://www.gnu.org/software/gettext/gettext.html
NOTE: pygettext attempts to be option and feature compatible with GNU
xgettext where ever possible. However some options are still missing or are
not fully implemented. Also, xgettext's use of command line switches with
option arguments is broken, and in these cases, pygettext just defines
additional switches.
Usage: pygettext [options] inputfile ...
Options:
-a
--extract-all
Extract all strings.
-d name
--default-domain=name
Rename the default output file from messages.pot to name.pot.
-E
--escape
Replace non-ASCII characters with octal escape sequences.
-D
--docstrings
Extract module, class, method, and function docstrings. These do
not need to be wrapped in _() markers, and in fact cannot be for
Python to consider them docstrings. (See also the -X option).
-h
--help
Print this help message and exit.
-k word
--keyword=word
Keywords to look for in addition to the default set, which are:
%(DEFAULTKEYWORDS)s
You can have multiple -k flags on the command line.
-K
--no-default-keywords
Disable the default set of keywords (see above). Any keywords
explicitly added with the -k/--keyword option are still recognized.
--no-location
Do not write filename/lineno location comments.
-n
--add-location
Write filename/lineno location comments indicating where each
extracted string is found in the source. These lines appear before
each msgid. The style of comments is controlled by the -S/--style
option. This is the default.
-o filename
--output=filename
Rename the default output file from messages.pot to filename. If
filename is `-' then the output is sent to standard out.
-p dir
--output-dir=dir
Output files will be placed in directory dir.
-S stylename
--style stylename
Specify which style to use for location comments. Two styles are
supported:
Solaris # File: filename, line: line-number
GNU #: filename:line
The style name is case insensitive. GNU style is the default.
-v
--verbose
Print the names of the files being processed.
-V
--version
Print the version of pygettext and exit.
-w columns
--width=columns
Set width of output to columns.
-x filename
--exclude-file=filename
Specify a file that contains a list of strings that are not be
extracted from the input files. Each string to be excluded must
appear on a line by itself in the file.
-X filename
--no-docstrings=filename
Specify a file that contains a list of files (one per line) that
should not have their docstrings extracted. This is only useful in
conjunction with the -D option above.
If `inputfile' is -, standard input is read.
""")
import os
import importlib.machinery
import importlib.util
import sys
import glob
import time
import getopt
import ast
import token
import tokenize
__version__ = '1.5'
default_keywords = ['_']
DEFAULTKEYWORDS = ', '.join(default_keywords)
EMPTYSTRING = ''
# The normal pot-file header. msgmerge and Emacs's po-mode work better if it's
# there.
pot_header = _('''\
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR ORGANIZATION
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\\n"
"POT-Creation-Date: %(time)s\\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\\n"
"Language-Team: LANGUAGE <LL@li.org>\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=%(charset)s\\n"
"Content-Transfer-Encoding: %(encoding)s\\n"
"Generated-By: pygettext.py %(version)s\\n"
''')
def usage(code, msg=''):
print(__doc__ % globals(), file=sys.stderr)
if msg:
print(msg, file=sys.stderr)
sys.exit(code)
def make_escapes(pass_nonascii):
global escapes, escape
if pass_nonascii:
# Allow non-ascii characters to pass through so that e.g. 'msgid
# "H�he"' would result not result in 'msgid "H\366he"'. Otherwise we
# escape any character outside the 32..126 range.
mod = 128
escape = escape_ascii
else:
mod = 256
escape = escape_nonascii
escapes = [r"\%03o" % i for i in range(mod)]
for i in range(32, 127):
escapes[i] = chr(i)
escapes[ord('\\')] = r'\\'
escapes[ord('\t')] = r'\t'
escapes[ord('\r')] = r'\r'
escapes[ord('\n')] = r'\n'
escapes[ord('\"')] = r'\"'
def escape_ascii(s, encoding):
return ''.join(escapes[ord(c)] if ord(c) < 128 else c for c in s)
def escape_nonascii(s, encoding):
return ''.join(escapes[b] for b in s.encode(encoding))
def is_literal_string(s):
return s[0] in '\'"' or (s[0] in 'rRuU' and s[1] in '\'"')
def safe_eval(s):
# unwrap quotes, safely
return eval(s, {'__builtins__':{}}, {})
def normalize(s, encoding):
# 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, encoding) + '"'
else:
if not lines[-1]:
del lines[-1]
lines[-1] = lines[-1] + '\n'
for i in range(len(lines)):
lines[i] = escape(lines[i], encoding)
lineterm = '\\n"\n"'
s = '""\n"' + lineterm.join(lines) + '"'
return s
def containsAny(str, set):
"""Check whether 'str' contains ANY of the chars in 'set'"""
return 1 in [c in str for c in set]
def getFilesForName(name):
"""Get a list of module files for a filename, a module or package name,
or a directory.
"""
if not os.path.exists(name):
# check for glob chars
if containsAny(name, "*?[]"):
files = glob.glob(name)
list = []
for file in files:
list.extend(getFilesForName(file))
return list
# try to find module or package
try:
spec = importlib.util.find_spec(name)
name = spec.origin
except ImportError:
name = None
if not name:
return []
if os.path.isdir(name):
# find all python files in directory
list = []
# get extension for python source files
_py_ext = importlib.machinery.SOURCE_SUFFIXES[0]
for root, dirs, files in os.walk(name):
# don't recurse into CVS directories
if 'CVS' in dirs:
dirs.remove('CVS')
# add all *.py files to list
list.extend(
[os.path.join(root, file) for file in files
if os.path.splitext(file)[1] == _py_ext]
)
return list
elif os.path.exists(name):
# a single file
return [name]
return []
class TokenEater:
def __init__(self, options):
self.__options = options
self.__messages = {}
self.__state = self.__waiting
self.__data = []
self.__lineno = -1
self.__freshmodule = 1
self.__curfile = None
self.__enclosurecount = 0
def __call__(self, ttype, tstring, stup, etup, line):
# dispatch
## import token
## print('ttype:', token.tok_name[ttype], 'tstring:', tstring,
## file=sys.stderr)
self.__state(ttype, tstring, stup[0])
def __waiting(self, ttype, tstring, lineno):
opts = self.__options
# Do docstring extractions, if enabled
if opts.docstrings and not opts.nodocstrings.get(self.__curfile):
# module docstring?
if self.__freshmodule:
if ttype == tokenize.STRING and is_literal_string(tstring):
self.__addentry(safe_eval(tstring), lineno, isdocstring=1)
self.__freshmodule = 0
return
if ttype in (tokenize.COMMENT, tokenize.NL, tokenize.ENCODING):
return
self.__freshmodule = 0
# class or func/method docstring?
if ttype == tokenize.NAME and tstring in ('class', 'def'):
self.__state = self.__suiteseen
return
if ttype == tokenize.NAME and tstring in opts.keywords:
self.__state = self.__keywordseen
return
if ttype == tokenize.STRING:
maybe_fstring = ast.parse(tstring, mode='eval').body
if not isinstance(maybe_fstring, ast.JoinedStr):
return
for value in filter(lambda node: isinstance(node, ast.FormattedValue),
maybe_fstring.values):
for call in filter(lambda node: isinstance(node, ast.Call),
ast.walk(value)):
func = call.func
if isinstance(func, ast.Name):
func_name = func.id
elif isinstance(func, ast.Attribute):
func_name = func.attr
else:
continue
if func_name not in opts.keywords:
continue
if len(call.args) != 1:
print(_(
'*** %(file)s:%(lineno)s: Seen unexpected amount of'
' positional arguments in gettext call: %(source_segment)s'
) % {
'source_segment': ast.get_source_segment(tstring, call) or tstring,
'file': self.__curfile,
'lineno': lineno
}, file=sys.stderr)
continue
if call.keywords:
print(_(
'*** %(file)s:%(lineno)s: Seen unexpected keyword arguments'
' in gettext call: %(source_segment)s'
) % {
'source_segment': ast.get_source_segment(tstring, call) or tstring,
'file': self.__curfile,
'lineno': lineno
}, file=sys.stderr)
continue
arg = call.args[0]
if not isinstance(arg, ast.Constant):
print(_(
'*** %(file)s:%(lineno)s: Seen unexpected argument type'
' in gettext call: %(source_segment)s'
) % {
'source_segment': ast.get_source_segment(tstring, call) or tstring,
'file': self.__curfile,
'lineno': lineno
}, file=sys.stderr)
continue
if isinstance(arg.value, str):
self.__addentry(arg.value, lineno)
def __suiteseen(self, ttype, tstring, lineno):
# skip over any enclosure pairs until we see the colon
if ttype == tokenize.OP:
if tstring == ':' and self.__enclosurecount == 0:
# we see a colon and we're not in an enclosure: end of def
self.__state = self.__suitedocstring
elif tstring in '([{':
self.__enclosurecount += 1
elif tstring in ')]}':
self.__enclosurecount -= 1
def __suitedocstring(self, ttype, tstring, lineno):
# ignore any intervening noise
if ttype == tokenize.STRING and is_literal_string(tstring):
self.__addentry(safe_eval(tstring), lineno, isdocstring=1)
self.__state = self.__waiting
elif ttype not in (tokenize.NEWLINE, tokenize.INDENT,
tokenize.COMMENT):
# there was no class docstring
self.__state = self.__waiting
def __keywordseen(self, ttype, tstring, lineno):
if ttype == tokenize.OP and tstring == '(':
self.__data = []
self.__lineno = lineno
self.__state = self.__openseen
else:
self.__state = self.__waiting
def __openseen(self, ttype, tstring, lineno):
if ttype == tokenize.OP and tstring == ')':
# We've seen the last of the translatable strings. Record the
# line number of the first line of the strings and update the list
# of messages seen. Reset state for the next batch. If there
# were no strings inside _(), then just ignore this entry.
if self.__data:
self.__addentry(EMPTYSTRING.join(self.__data))
self.__state = self.__waiting
elif ttype == tokenize.STRING and is_literal_string(tstring):
self.__data.append(safe_eval(tstring))
elif ttype not in [tokenize.COMMENT, token.INDENT, token.DEDENT,
token.NEWLINE, tokenize.NL]:
# warn if we see anything else than STRING or whitespace
print(_(
'*** %(file)s:%(lineno)s: Seen unexpected token "%(token)s"'
) % {
'token': tstring,
'file': self.__curfile,
'lineno': self.__lineno
}, file=sys.stderr)
self.__state = self.__waiting
def __addentry(self, msg, lineno=None, isdocstring=0):
if lineno is None:
lineno = self.__lineno
if not msg in self.__options.toexclude:
entry = (self.__curfile, lineno)
self.__messages.setdefault(msg, {})[entry] = isdocstring
def set_filename(self, filename):
self.__curfile = filename
self.__freshmodule = 1
def write(self, fp):
options = self.__options
timestamp = time.strftime('%Y-%m-%d %H:%M%z')
encoding = fp.encoding if fp.encoding else 'UTF-8'
print(pot_header % {'time': timestamp, 'version': __version__,
'charset': encoding,
'encoding': '8bit'}, file=fp)
# Sort the entries. First sort each particular entry's keys, then
# sort all the entries by their first item.
reverse = {}
for k, v in self.__messages.items():
keys = sorted(v.keys())
reverse.setdefault(tuple(keys), []).append((k, v))
rkeys = sorted(reverse.keys())
for rkey in rkeys:
rentries = reverse[rkey]
rentries.sort()
for k, v in rentries:
# If the entry was gleaned out of a docstring, then add a
# comment stating so. This is to aid translators who may wish
# to skip translating some unimportant docstrings.
isdocstring = any(v.values())
# k is the message string, v is a dictionary-set of (filename,
# lineno) tuples. We want to sort the entries in v first by
# file name and then by line number.
v = sorted(v.keys())
if not options.writelocations:
pass
# location comments are different b/w Solaris and GNU:
elif options.locationstyle == options.SOLARIS:
for filename, lineno in v:
d = {'filename': filename, 'lineno': lineno}
print(_(
'# File: %(filename)s, line: %(lineno)d') % d, file=fp)
elif options.locationstyle == options.GNU:
# fit as many locations on one line, as long as the
# resulting line length doesn't exceed 'options.width'
locline = '#:'
for filename, lineno in v:
d = {'filename': filename, 'lineno': lineno}
s = _(' %(filename)s:%(lineno)d') % d
if len(locline) + len(s) <= options.width:
locline = locline + s
else:
print(locline, file=fp)
locline = "#:" + s
if len(locline) > 2:
print(locline, file=fp)
if isdocstring:
print('#, docstring', file=fp)
print('msgid', normalize(k, encoding), file=fp)
print('msgstr ""\n', file=fp)
def main():
global default_keywords
try:
opts, args = getopt.getopt(
sys.argv[1:],
'ad:DEhk:Kno:p:S:Vvw:x:X:',
['extract-all', 'default-domain=', 'escape', 'help',
'keyword=', 'no-default-keywords',
'add-location', 'no-location', 'output=', 'output-dir=',
'style=', 'verbose', 'version', 'width=', 'exclude-file=',
'docstrings', 'no-docstrings',
])
except getopt.error as msg:
usage(1, msg)
# for holding option values
class Options:
# constants
GNU = 1
SOLARIS = 2
# defaults
extractall = 0 # FIXME: currently this option has no effect at all.
escape = 0
keywords = []
outpath = ''
outfile = 'messages.pot'
writelocations = 1
locationstyle = GNU
verbose = 0
width = 78
excludefilename = ''
docstrings = 0
nodocstrings = {}
options = Options()
locations = {'gnu' : options.GNU,
'solaris' : options.SOLARIS,
}
# parse options
for opt, arg in opts:
if opt in ('-h', '--help'):
usage(0)
elif opt in ('-a', '--extract-all'):
options.extractall = 1
elif opt in ('-d', '--default-domain'):
options.outfile = arg + '.pot'
elif opt in ('-E', '--escape'):
options.escape = 1
elif opt in ('-D', '--docstrings'):
options.docstrings = 1
elif opt in ('-k', '--keyword'):
options.keywords.append(arg)
elif opt in ('-K', '--no-default-keywords'):
default_keywords = []
elif opt in ('-n', '--add-location'):
options.writelocations = 1
elif opt in ('--no-location',):
options.writelocations = 0
elif opt in ('-S', '--style'):
options.locationstyle = locations.get(arg.lower())
if options.locationstyle is None:
usage(1, _('Invalid value for --style: %s') % arg)
elif opt in ('-o', '--output'):
options.outfile = arg
elif opt in ('-p', '--output-dir'):
options.outpath = arg
elif opt in ('-v', '--verbose'):
options.verbose = 1
elif opt in ('-V', '--version'):
print(_('pygettext.py (xgettext for Python) %s') % __version__)
sys.exit(0)
elif opt in ('-w', '--width'):
try:
options.width = int(arg)
except ValueError:
usage(1, _('--width argument must be an integer: %s') % arg)
elif opt in ('-x', '--exclude-file'):
options.excludefilename = arg
elif opt in ('-X', '--no-docstrings'):
fp = open(arg)
try:
while 1:
line = fp.readline()
if not line:
break
options.nodocstrings[line[:-1]] = 1
finally:
fp.close()
# calculate escapes
make_escapes(not options.escape)
# calculate all keywords
options.keywords.extend(default_keywords)
# initialize list of strings to exclude
if options.excludefilename:
try:
with open(options.excludefilename) as fp:
options.toexclude = fp.readlines()
except IOError:
print(_(
"Can't read --exclude-file: %s") % options.excludefilename, file=sys.stderr)
sys.exit(1)
else:
options.toexclude = []
# resolve args to module lists
expanded = []
for arg in args:
if arg == '-':
expanded.append(arg)
else:
expanded.extend(getFilesForName(arg))
args = expanded
# slurp through all the files
eater = TokenEater(options)
for filename in args:
if filename == '-':
if options.verbose:
print(_('Reading standard input'))
fp = sys.stdin.buffer
closep = 0
else:
if options.verbose:
print(_('Working on %s') % filename)
fp = open(filename, 'rb')
closep = 1
try:
eater.set_filename(filename)
try:
tokens = tokenize.tokenize(fp.readline)
for _token in tokens:
eater(*_token)
except tokenize.TokenError as e:
print('%s: %s, line %d, column %d' % (
e.args[0], filename, e.args[1][0], e.args[1][1]),
file=sys.stderr)
finally:
if closep:
fp.close()
# write the output
if options.outfile == '-':
fp = sys.stdout
closep = 0
else:
if options.outpath:
options.outfile = os.path.join(options.outpath, options.outfile)
fp = open(options.outfile, 'w')
closep = 1
try:
eater.write(fp)
finally:
if closep:
fp.close()
if __name__ == '__main__':
main()
# some more test strings
# this one creates a warning
_('*** Seen unexpected token "%(token)s"') % {'token': 'test'}
_('more' 'than' 'one' 'string')
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