* added translation tools (to generate locale)

git-svn-id: svn+ssh://svn.fedorahosted.org/svn/sos/trunk@209 ef72aa8b-4018-0410-8976-d6e080ef94d8

2 files changed, 965 insertions, 0 deletions

diff --git a/src/tools/msgfmt.py b/src/tools/msgfmt.py
new file mode 100644
index 00000000..8a2d4e66
--- /dev/null
+++ b/src/tools/msgfmt.py
@@ -0,0 +1,203 @@
+#! /usr/bin/env python
+# -*- coding: iso-8859-1 -*-
+# Written by Martin v. Löwis <loewis@informatik.hu-berlin.de>
+
+"""Generate binary message catalog from textual translation description.
+
+This program converts a textual Uniforum-style message catalog (.po file) into
+a binary GNU catalog (.mo file).  This is essentially the same function as the
+GNU msgfmt program, however, it is a simpler implementation.
+
+Usage: msgfmt.py [OPTIONS] filename.po
+
+Options:
+    -o file
+    --output-file=file
+        Specify the output file to write to.  If omitted, output will go to a
+        file named filename.mo (based off the input file name).
+
+    -h
+    --help
+        Print this message and exit.
+
+    -V
+    --version
+        Display version information and exit.
+"""
+
+import sys
+import os
+import getopt
+import struct
+import array
+
+__version__ = "1.1"
+
+MESSAGES = {}
+
+
+
+def usage(code, msg=''):
+    print >> sys.stderr, __doc__
+    if msg:
+        print >> sys.stderr, msg
+    sys.exit(code)
+
+
+
+def add(id, str, fuzzy):
+    "Add a non-fuzzy translation to the dictionary."
+    global MESSAGES
+    if not fuzzy and str:
+        MESSAGES[id] = str
+
+
+
+def generate():
+    "Return the generated output."
+    global MESSAGES
+    keys = MESSAGES.keys()
+    # the keys are sorted in the .mo file
+    keys.sort()
+    offsets = []
+    ids = strs = ''
+    for id in keys:
+        # For each string, we need size and file offset.  Each string is NUL
+        # terminated; the NUL does not count into the size.
+        offsets.append((len(ids), len(id), len(strs), len(MESSAGES[id])))
+        ids += id + '\0'
+        strs += MESSAGES[id] + '\0'
+    output = ''
+    # The header is 7 32-bit unsigned integers.  We don't use hash tables, so
+    # the keys start right after the index tables.
+    # translated string.
+    keystart = 7*4+16*len(keys)
+    # and the values start after the keys
+    valuestart = keystart + len(ids)
+    koffsets = []
+    voffsets = []
+    # The string table first has the list of keys, then the list of values.
+    # Each entry has first the size of the string, then the file offset.
+    for o1, l1, o2, l2 in offsets:
+        koffsets += [l1, o1+keystart]
+        voffsets += [l2, o2+valuestart]
+    offsets = koffsets + voffsets
+    output = struct.pack("Iiiiiii",
+                         0x950412deL,       # Magic
+                         0,                 # Version
+                         len(keys),         # # of entries
+                         7*4,               # start of key index
+                         7*4+len(keys)*8,   # start of value index
+                         0, 0)              # size and offset of hash table
+    output += array.array("i", offsets).tostring()
+    output += ids
+    output += strs
+    return output
+
+
+
+def make(filename, outfile):
+    ID = 1
+    STR = 2
+
+    # Compute .mo name from .po name and arguments
+    if filename.endswith('.po'):
+        infile = filename
+    else:
+        infile = filename + '.po'
+    if outfile is None:
+        outfile = os.path.splitext(infile)[0] + '.mo'
+
+    try:
+        lines = open(infile).readlines()
+    except IOError, msg:
+        print >> sys.stderr, msg
+        sys.exit(1)
+    
+    section = None
+    fuzzy = 0
+
+    # Parse the catalog
+    lno = 0
+    for l in lines:
+        lno += 1
+        # If we get a comment line after a msgstr, this is a new entry
+        if l[0] == '#' and section == STR:
+            add(msgid, msgstr, fuzzy)
+            section = None
+            fuzzy = 0
+        # Record a fuzzy mark
+        if l[:2] == '#,' and l.find('fuzzy'):
+            fuzzy = 1
+        # Skip comments
+        if l[0] == '#':
+            continue
+        # Now we are in a msgid section, output previous section
+        if l.startswith('msgid'):
+            if section == STR:
+                add(msgid, msgstr, fuzzy)
+            section = ID
+            l = l[5:]
+            msgid = msgstr = ''
+        # Now we are in a msgstr section
+        elif l.startswith('msgstr'):
+            section = STR
+            l = l[6:]
+        # Skip empty lines
+        l = l.strip()
+        if not l:
+            continue
+        # XXX: Does this always follow Python escape semantics?
+        l = eval(l)
+        if section == ID:
+            msgid += l
+        elif section == STR:
+            msgstr += l
+        else:
+            print >> sys.stderr, 'Syntax error on %s:%d' % (infile, lno), \
+                  'before:'
+            print >> sys.stderr, l
+            sys.exit(1)
+    # Add last entry
+    if section == STR:
+        add(msgid, msgstr, fuzzy)
+
+    # Compute output
+    output = generate()
+
+    try:
+        open(outfile,"wb").write(output)
+    except IOError,msg:
+        print >> sys.stderr, msg
+                      
+
+
+def main():
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], 'hVo:',
+                                   ['help', 'version', 'output-file='])
+    except getopt.error, msg:
+        usage(1, msg)
+
+    outfile = None
+    # parse options
+    for opt, arg in opts:
+        if opt in ('-h', '--help'):
+            usage(0)
+        elif opt in ('-V', '--version'):
+            print >> sys.stderr, "msgfmt.py", __version__
+            sys.exit(0)
+        elif opt in ('-o', '--output-file'):
+            outfile = arg
+    # do it
+    if not args:
+        print >> sys.stderr, 'No input file given'
+        print >> sys.stderr, "Try `msgfmt --help' for more information."
+        return
+
+    for filename in args:
+        make(filename, outfile)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/src/tools/pygettext.py b/src/tools/pygettext.py
new file mode 100644
index 00000000..040b5c7f
--- /dev/null
+++ b/src/tools/pygettext.py
@@ -0,0 +1,762 @@
+#! /usr/bin/env python
+# -*- coding: iso-8859-1 -*-
+# Originally written by Barry Warsaw <barry@zope.com>
+#
+# Minimally patched to make it even more xgettext compatible
+# by Peter Funk <pf@artcom-gmbh.de>
+#
+# 2002-11-22 Jürgen 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.
+#
+
+import codecs
+
+# for selftesting
+import re
+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] http://www.python.org/workshops/1997-10/proceedings/loewis.html
+ [2] http://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 imp
+import sys
+import glob
+import time
+import getopt
+import token
+import tokenize
+import operator
+import codecs
+
+from elementtree.ElementTree import ElementTree, XML
+
+__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: %(charset)s\\n"
+"Generated-By: pygettext.py %(version)s\\n"
+
+''')
+
+
+def usage(code, msg=''):
+    print >> sys.stderr, __doc__ % globals()
+    if msg:
+        print >> sys.stderr, msg
+    sys.exit(code)
+
+
+
+escapes = []
+
+def make_escapes(pass_iso8859):
+    global escapes
+    if pass_iso8859:
+        # Allow iso-8859 characters to pass through so that e.g. 'msgid
+        # "Höhe"' would result not result in 'msgid "H\366he"'.  Otherwise we
+        # escape any character outside the 32..126 range.
+        mod = 128
+    else:
+        mod = 256
+    for i in range(256):
+        if 32 <= (i % mod) <= 126:
+            escapes.append(chr(i))
+        else:
+            escapes.append("\\%03o" % i)
+    escapes[ord('\\')] = '\\\\'
+    escapes[ord('\t')] = '\\t'
+    escapes[ord('\r')] = '\\r'
+    escapes[ord('\n')] = '\\n'
+    escapes[ord('\"')] = '\\"'
+
+
+def escape_ascii(s):
+    "Escapes all text outside of 7bit ASCII plus control characters and Python literals."
+    global escapes
+    s = list(s)
+    for i in range(len(s)):
+        s[i] = escapes[ord(s[i])]
+    return EMPTYSTRING.join(s)
+
+def escape_unicode(s):
+    "Escapes control characters and Python literals only leaving non-ascii text intact."
+    #for sp in ('\t', '\r', '\n', '\"', '\\'):
+    s = s.replace('\\', '\\\\')
+    s = s.replace('\t', '\\t')
+    s = s.replace('\r', '\\r')
+    s = s.replace('\n', '\\n')
+    s = s.replace('\"', '\\"')
+    # escape control chars
+    def repl(m): return "\\%03o" % ord(m.group(0))
+    s = re.sub('[\001-\037]', repl, s)
+    return s
+
+def safe_eval(s):
+    # unwrap quotes, safely
+    return eval(s, {'__builtins__':{}}, {})
+
+
+def normalize(s, escape=False):
+    # 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_unicode(s) + '"'
+    else:
+        if not lines[-1]:
+            del lines[-1]
+            lines[-1] = lines[-1] + '\n'
+        for i in range(len(lines)):
+            lines[i] = escape_unicode(lines[i])
+        lineterm = '\\n"\n"'
+        s = '""\n"' + lineterm.join(lines) + '"'
+    if isinstance(s, unicode):
+        s = s.encode('utf-8')
+    if escape:
+        def repl(m): return "\\%03o" % ord(m.group(0))
+        s = re.sub('[\200-\377]', repl, s)
+    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 _visit_pyfiles(list, dirname, names):
+    """Helper for getFilesForName()."""
+    # get extension for python source files
+    if not globals().has_key('_py_ext'):
+        global _py_ext
+        _py_ext = [triple[0] for triple in imp.get_suffixes()
+                   if triple[2] == imp.PY_SOURCE][0]
+
+    # don't recurse into CVS directories
+    if 'CVS' in names:
+        names.remove('CVS')
+    if '.svn' in names:
+        names.remove('.svn')
+
+    # add all *.py files to list
+    list.extend(
+        [os.path.join(dirname, file) for file in names
+         if os.path.splitext(file)[1] == _py_ext]
+        )
+
+
+def _get_modpkg_path(dotted_name, pathlist=None):
+    """Get the filesystem path for a module or a package.
+
+    Return the file system path to a file for a module, and to a directory for
+    a package. Return None if the name is not found, or is a builtin or
+    extension module.
+    """
+    # split off top-most name
+    parts = dotted_name.split('.', 1)
+
+    if len(parts) > 1:
+        # we have a dotted path, import top-level package
+        try:
+            file, pathname, description = imp.find_module(parts[0], pathlist)
+            if file: file.close()
+        except ImportError:
+            return None
+
+        # check if it's indeed a package
+        if description[2] == imp.PKG_DIRECTORY:
+            # recursively handle the remaining name parts
+            pathname = _get_modpkg_path(parts[1], [pathname])
+        else:
+            pathname = None
+    else:
+        # plain name
+        try:
+            file, pathname, description = imp.find_module(
+                dotted_name, pathlist)
+            if file:
+                file.close()
+            if description[2] not in [imp.PY_SOURCE, imp.PKG_DIRECTORY]:
+                pathname = None
+        except ImportError:
+            pathname = None
+
+    return pathname
+
+
+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
+        name = _get_modpkg_path(name)
+        if not name:
+            return []
+
+    if os.path.isdir(name):
+        # find all python files in directory
+        list = []
+        os.path.walk(name, _visit_pyfiles, list)
+        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.__encoding = None
+
+    def __call__(self, ttype, tstring, stup, etup, line):
+        # dispatch
+##        import token
+##        print >> sys.stderr, 'ttype:', token.tok_name[ttype], \
+##              'tstring:', tstring
+        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:
+                    self.__addentry(safe_eval(tstring), lineno, isdocstring=1)
+                    self.__freshmodule = 0
+                elif ttype not in (tokenize.COMMENT, tokenize.NL):
+                    self.__freshmodule = 0
+                return
+            # class 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
+
+    def __suiteseen(self, ttype, tstring, lineno):
+        # ignore anything until we see the colon
+        if ttype == tokenize.OP and tstring == ':':
+            self.__state = self.__suitedocstring
+
+    def __suitedocstring(self, ttype, tstring, lineno):
+        # ignore any intervening noise
+        if ttype == tokenize.STRING:
+            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:
+            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 >> sys.stderr, _(
+                '*** %(file)s:%(lineno)s: Seen unexpected token "%(token)s"'
+                ) % {
+                'token': tstring,
+                'file': self.__curfile,
+                'lineno': self.__lineno
+                }
+            self.__state = self.__waiting
+
+    def __addentry(self, msg, lineno=None, isdocstring=0, iskidstring=0):
+        # tokenize module always return unicode strings
+        # even when they are in fact coded string instances
+        # to deal with this we use a hack:
+        # evaluate string's representation without leading "u"
+        # to force interpration as coded string
+        # then we decode it using already known file's encoding
+        if not iskidstring:
+            if type(msg) is str:
+                msg = eval(repr(msg))
+            else:
+                msg = eval(repr(msg)[1:])
+            msg = msg.decode(self.__encoding)
+        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 set_file_encoding(self, fp):
+        """Searches for -*- coding: -*- magic comment to find out file encoding."""
+        self.__encoding = 'utf-8' # reset to default for each new file
+        for line in fp.readlines()[:5]:
+            m = re.match('#\s*-\*-\s+coding:\s+(\w+)\s+-\*-', line)
+            if m:
+                self.__encoding = m.group(1)
+                break
+        fp.seek(0)
+
+    def contains_inline_python(self,msg):
+        if '${' in msg and not '$${' in msg: return True
+        return False
+
+    def strip_namespace_uri(self,tag):
+        return tag.split('}')[-1]
+
+    def get_text_node(self,node):
+        tag = re.sub('({[^}]+})?(\w+)', '\\2', node.tag)
+
+        if node.text:
+            msg = node.text.strip()
+            if msg and not self.contains_inline_python(msg): 
+                if tag not in ['script','style']:
+                    self.__addentry(msg,self.strip_namespace_uri(node.tag), iskidstring=1) 
+
+        if node.getchildren():
+            for child in node: self.get_text_node(child)
+
+        if node.tail:
+            msg = node.tail.strip()
+            if msg and not self.contains_inline_python(msg): 
+                self.__addentry(msg,self.strip_namespace_uri(node.tag), iskidstring=1) 
+
+    def extract_kid_strings(self):
+        if not self.__curfile: return
+        f = None
+        try:
+            file = open(self.__curfile)
+            f = ElementTree(XML( fixentities(file.read() )))
+        except Exception, e:
+            print 'Skip %s: %s' % (self.__curfile, e)
+            return
+
+        node = f.getroot()
+        self.get_text_node(node)
+
+    def write(self, fp):
+        options = self.__options
+        # format without tz information
+        # because %Z is timezone's name, not offset
+        # and, say, on localized Windows XP this is non-ascii string
+        timestamp = time.strftime('%Y-%m-%d %H:%M')
+        # The time stamp in the header doesn't have the same format as that
+        # generated by xgettext...
+        t = {'time': timestamp, 'version': __version__, 'charset':'utf-8'}
+        print >> fp, pot_header % t
+        # 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 = v.keys()
+            keys.sort()
+            reverse.setdefault(tuple(keys), []).append((k, v))
+        rkeys = reverse.keys()
+        rkeys.sort()
+        for rkey in rkeys:
+            rentries = reverse[rkey]
+            rentries.sort()
+            for k, v in rentries:
+                isdocstring = 0
+                # 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.
+                if reduce(operator.__add__, v.values()):
+                    isdocstring = 1
+                # 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 = v.keys()
+                v.sort()
+                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 >>fp, _(
+                            '# File: %(filename)s, line: %(lineno)s') % d
+                elif options.locationstyle == options.GNU:
+                    # fit as many locations on one line, as long as the
+                    # resulting line length doesn't exceeds 'options.width'
+                    locline = '#:'
+                    for filename, lineno in v:
+                        d = {'filename': filename, 'lineno': lineno}
+                        s = _(' %(filename)s:%(lineno)s') % d
+                        if len(locline) + len(s) <= options.width:
+                            locline = locline + s
+                        else:
+                            print >> fp, locline
+                            locline = "#:" + s
+                    if len(locline) > 2:
+                        print >> fp, locline
+                if isdocstring:
+                    print >> fp, '#, docstring'
+                if k: # do not output empty msgid
+                    print >> fp, 'msgid', normalize(k, options.escape)
+                    print >> fp, 'msgstr ""\n'
+
+
+def main():
+    global default_keywords
+    try:
+        opts, args = getopt.getopt(
+            sys.argv[1:],
+            'ad:UDEhk: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', 'support-unicode',
+             ])
+    except getopt.error, 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(0)
+
+    # calculate all keywords
+    options.keywords.extend(default_keywords)
+
+    # initialize list of strings to exclude
+    if options.excludefilename:
+        try:
+            fp = open(options.excludefilename)
+            options.toexclude = fp.readlines()
+            fp.close()
+        except IOError:
+            print >> sys.stderr, _(
+                "Can't read --exclude-file: %s") % options.excludefilename
+            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
+            closep = 0
+        else:
+            if options.verbose:
+                print _('Working on %s') % filename
+            fp = open(filename)
+            eater.set_file_encoding(fp)
+            closep = 1
+        try:
+            eater.set_filename(filename)
+            try:
+                tokenize.tokenize(fp.readline, eater)
+            except tokenize.TokenError, e:
+                print >> sys.stderr, '%s: %s, line %d, column %d' % (
+                    e[0], filename, e[1][0], e[1][1])
+        finally:
+            if closep:
+                fp.close()
+
+        if os.path.splitext(filename)[-1].lower() == '.kid': eater.extract_kid_strings()
+
+    # 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, 'wt')
+        closep = 1
+    try:
+        eater.write(fp)
+    finally:
+        if closep:
+            fp.close()
+
+
+if __name__ == '__main__':
+    main()
+    # some more test strings
+    _(u'a unicode string')
+    # this one creates a warning
+    _('*** Seen unexpected token "%(token)s"') % {'token': 'test'}
+    _('more' 'than' 'one' 'string')