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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
# | |
# License: MIT (see LICENSE file provided) | |
# vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: | |
""" | |
**polib** allows you to manipulate, create, modify gettext files (pot, po | |
and mo files). You can load existing files, iterate through it's entries, | |
add, modify entries, comments or metadata, etc... or create new po files | |
from scratch. | |
**polib** provides a simple and pythonic API, exporting only three | |
convenience functions (*pofile*, *mofile* and *detect_encoding*), and the | |
four core classes, *POFile*, *MOFile*, *POEntry* and *MOEntry* for creating | |
new files/entries. | |
**Basic example**: | |
>>> import polib | |
>>> # load an existing po file | |
>>> po = polib.pofile('tests/test_utf8.po') | |
>>> for entry in po: | |
... # do something with entry... | |
... pass | |
>>> # add an entry | |
>>> entry = polib.POEntry(msgid='Welcome', msgstr='Bienvenue') | |
>>> entry.occurrences = [('welcome.py', '12'), ('anotherfile.py', '34')] | |
>>> po.append(entry) | |
>>> # to save our modified po file: | |
>>> # po.save() | |
>>> # or you may want to compile the po file | |
>>> # po.save_as_mofile('tests/test_utf8.mo') | |
""" | |
__author__ = 'David JEAN LOUIS <izimobil@gmail.com>' | |
__version__ = '0.5.2' | |
__all__ = ['pofile', 'POFile', 'POEntry', 'mofile', 'MOFile', 'MOEntry', | |
'detect_encoding', 'escape', 'unescape', 'detect_encoding',] | |
import codecs | |
import struct | |
import textwrap | |
import types | |
import re | |
default_encoding = 'utf-8' | |
# function pofile() {{{ | |
def pofile(fpath, **kwargs): | |
""" | |
Convenience function that parse the po/pot file *fpath* and return | |
a POFile instance. | |
**Keyword arguments**: | |
- *fpath*: string, full or relative path to the po/pot file to parse | |
- *wrapwidth*: integer, the wrap width, only useful when -w option was | |
passed to xgettext (optional, default to 78) | |
- *autodetect_encoding*: boolean, if set to False the function will | |
not try to detect the po file encoding (optional, default to True) | |
- *encoding*: string, an encoding, only relevant if autodetect_encoding | |
is set to False | |
- *check_for_duplicates*: whether to check for duplicate entries when | |
adding entries to the file, default: False (optional) | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_weird_occurrences.po', | |
... check_for_duplicates=True) | |
>>> po #doctest: +ELLIPSIS | |
<POFile instance at ...> | |
>>> import os, tempfile | |
>>> all_attrs = ('msgctxt', 'msgid', 'msgstr', 'msgid_plural', | |
... 'msgstr_plural', 'obsolete', 'comment', 'tcomment', | |
... 'occurrences', 'flags', 'previous_msgctxt', | |
... 'previous_msgid', 'previous_msgid_plural') | |
>>> for fname in ['test_iso-8859-15.po', 'test_utf8.po']: | |
... orig_po = polib.pofile('tests/'+fname) | |
... tmpf = tempfile.NamedTemporaryFile().name | |
... orig_po.save(tmpf) | |
... try: | |
... new_po = polib.pofile(tmpf) | |
... for old, new in zip(orig_po, new_po): | |
... for attr in all_attrs: | |
... if getattr(old, attr) != getattr(new, attr): | |
... getattr(old, attr) | |
... getattr(new, attr) | |
... finally: | |
... os.unlink(tmpf) | |
>>> po_file = polib.pofile('tests/test_save_as_mofile.po') | |
>>> tmpf = tempfile.NamedTemporaryFile().name | |
>>> po_file.save_as_mofile(tmpf) | |
>>> try: | |
... mo_file = polib.mofile(tmpf) | |
... for old, new in zip(po_file, mo_file): | |
... if po_file._encode(old.msgid) != mo_file._encode(new.msgid): | |
... 'OLD: ', po_file._encode(old.msgid) | |
... 'NEW: ', mo_file._encode(new.msgid) | |
... if po_file._encode(old.msgstr) != mo_file._encode(new.msgstr): | |
... 'OLD: ', po_file._encode(old.msgstr) | |
... 'NEW: ', mo_file._encode(new.msgstr) | |
... print new.msgstr | |
... finally: | |
... os.unlink(tmpf) | |
""" | |
if kwargs.get('autodetect_encoding', True) == True: | |
enc = detect_encoding(fpath) | |
else: | |
enc = kwargs.get('encoding', default_encoding) | |
check_for_duplicates = kwargs.get('check_for_duplicates', False) | |
parser = _POFileParser( | |
fpath, | |
encoding=enc, | |
check_for_duplicates=kwargs.get('check_for_duplicates', False) | |
) | |
instance = parser.parse() | |
instance.wrapwidth = kwargs.get('wrapwidth', 78) | |
return instance | |
# }}} | |
# function mofile() {{{ | |
def mofile(fpath, **kwargs): | |
""" | |
Convenience function that parse the mo file *fpath* and return | |
a MOFile instance. | |
**Keyword arguments**: | |
- *fpath*: string, full or relative path to the mo file to parse | |
- *wrapwidth*: integer, the wrap width, only useful when -w option was | |
passed to xgettext to generate the po file that was used to format | |
the mo file (optional, default to 78) | |
- *autodetect_encoding*: boolean, if set to False the function will | |
not try to detect the po file encoding (optional, default to True) | |
- *encoding*: string, an encoding, only relevant if autodetect_encoding | |
is set to False | |
- *check_for_duplicates*: whether to check for duplicate entries when | |
adding entries to the file, default: False (optional) | |
**Example**: | |
>>> import polib | |
>>> mo = polib.mofile('tests/test_utf8.mo', check_for_duplicates=True) | |
>>> mo #doctest: +ELLIPSIS | |
<MOFile instance at ...> | |
>>> import os, tempfile | |
>>> for fname in ['test_iso-8859-15.mo', 'test_utf8.mo']: | |
... orig_mo = polib.mofile('tests/'+fname) | |
... tmpf = tempfile.NamedTemporaryFile().name | |
... orig_mo.save(tmpf) | |
... try: | |
... new_mo = polib.mofile(tmpf) | |
... for old, new in zip(orig_mo, new_mo): | |
... if old.msgid != new.msgid: | |
... old.msgstr | |
... new.msgstr | |
... finally: | |
... os.unlink(tmpf) | |
""" | |
if kwargs.get('autodetect_encoding', True) == True: | |
enc = detect_encoding(fpath, True) | |
else: | |
enc = kwargs.get('encoding', default_encoding) | |
parser = _MOFileParser( | |
fpath, | |
encoding=enc, | |
check_for_duplicates=kwargs.get('check_for_duplicates', False) | |
) | |
instance = parser.parse() | |
instance.wrapwidth = kwargs.get('wrapwidth', 78) | |
return instance | |
# }}} | |
# function detect_encoding() {{{ | |
def detect_encoding(fpath, binary_mode=False): | |
""" | |
Try to detect the encoding used by the file *fpath*. The function will | |
return polib default *encoding* if it's unable to detect it. | |
**Keyword argument**: | |
- *fpath*: string, full or relative path to the mo file to parse. | |
**Examples**: | |
>>> print(detect_encoding('tests/test_noencoding.po')) | |
utf-8 | |
>>> print(detect_encoding('tests/test_utf8.po')) | |
UTF-8 | |
>>> print(detect_encoding('tests/test_utf8.mo', True)) | |
UTF-8 | |
>>> print(detect_encoding('tests/test_iso-8859-15.po')) | |
ISO_8859-15 | |
>>> print(detect_encoding('tests/test_iso-8859-15.mo', True)) | |
ISO_8859-15 | |
""" | |
import re | |
rx = re.compile(r'"?Content-Type:.+? charset=([\w_\-:\.]+)') | |
if binary_mode: | |
mode = 'rb' | |
else: | |
mode = 'r' | |
f = open(fpath, mode) | |
for l in f.readlines(): | |
match = rx.search(l) | |
if match: | |
f.close() | |
return match.group(1).strip() | |
f.close() | |
return default_encoding | |
# }}} | |
# function escape() {{{ | |
def escape(st): | |
""" | |
Escape special chars and return the given string *st*. | |
**Examples**: | |
>>> escape('\\t and \\n and \\r and " and \\\\') | |
'\\\\t and \\\\n and \\\\r and \\\\" and \\\\\\\\' | |
""" | |
return st.replace('\\', r'\\')\ | |
.replace('\t', r'\t')\ | |
.replace('\r', r'\r')\ | |
.replace('\n', r'\n')\ | |
.replace('\"', r'\"') | |
# }}} | |
# function unescape() {{{ | |
def unescape(st): | |
""" | |
Unescape special chars and return the given string *st*. | |
**Examples**: | |
>>> unescape('\\\\t and \\\\n and \\\\r and \\\\" and \\\\\\\\') | |
'\\t and \\n and \\r and " and \\\\' | |
>>> unescape(r'\\n') | |
'\\n' | |
>>> unescape(r'\\\\n') | |
'\\\\n' | |
>>> unescape(r'\\\\n\\n') | |
'\\\\n\\n' | |
""" | |
def unescape_repl(m): | |
m = m.group(1) | |
if m == 'n': | |
return '\n' | |
if m == 't': | |
return '\t' | |
if m == 'r': | |
return '\r' | |
if m == '\\': | |
return '\\' | |
return m # handles escaped double quote | |
return re.sub(r'\\(\\|n|t|r|")', unescape_repl, st) | |
# }}} | |
# class _BaseFile {{{ | |
class _BaseFile(list): | |
""" | |
Common parent class for POFile and MOFile classes. | |
This class must **not** be instanciated directly. | |
""" | |
def __init__(self, *args, **kwargs): | |
""" | |
Constructor. | |
**Keyword arguments**: | |
- *fpath*: string, path to po or mo file | |
- *wrapwidth*: integer, the wrap width, only useful when -w option | |
was passed to xgettext to generate the po file that was used to | |
format the mo file, default to 78 (optional), | |
- *encoding*: string, the encoding to use, defaults to | |
"default_encoding" global variable (optional), | |
- *check_for_duplicates*: whether to check for duplicate entries | |
when adding entries to the file, default: False (optional). | |
""" | |
list.__init__(self) | |
# the opened file handle | |
self.fpath = kwargs.get('fpath') | |
# the width at which lines should be wrapped | |
self.wrapwidth = kwargs.get('wrapwidth', 78) | |
# the file encoding | |
self.encoding = kwargs.get('encoding', default_encoding) | |
# whether to check for duplicate entries or not | |
self.check_for_duplicates = kwargs.get('check_for_duplicates', False) | |
# header | |
self.header = '' | |
# both po and mo files have metadata | |
self.metadata = {} | |
self.metadata_is_fuzzy = 0 | |
def __unicode__(self): | |
""" | |
Unicode representation of the file. | |
""" | |
ret = [] | |
entries = [self.metadata_as_entry()] + \ | |
[e for e in self if not e.obsolete] | |
for entry in entries: | |
ret.append(entry.__unicode__(self.wrapwidth)) | |
for entry in self.obsolete_entries(): | |
ret.append(entry.__unicode__(self.wrapwidth)) | |
ret = '\n'.join(ret) | |
if type(ret) != types.UnicodeType: | |
return unicode(ret, self.encoding) | |
return ret | |
def __str__(self): | |
""" | |
String representation of the file. | |
""" | |
return unicode(self).encode(self.encoding) | |
def __contains__(self, entry): | |
""" | |
Overriden method to implement the membership test (in and not in). | |
The method considers that an entry is in the file if it finds an | |
entry that has the same msgid (case sensitive). | |
**Keyword argument**: | |
- *entry*: an instance of polib._BaseEntry | |
**Tests**: | |
>>> po = POFile() | |
>>> e1 = POEntry(msgid='foobar', msgstr='spam') | |
>>> e2 = POEntry(msgid='barfoo', msgstr='spam') | |
>>> e3 = POEntry(msgid='foobar', msgstr='eggs') | |
>>> e4 = POEntry(msgid='spameggs', msgstr='eggs') | |
>>> po.append(e1) | |
>>> po.append(e2) | |
>>> e1 in po | |
True | |
>>> e2 not in po | |
False | |
>>> e3 in po | |
True | |
>>> e4 in po | |
False | |
""" | |
return self.find(entry.msgid, by='msgid') is not None | |
def append(self, entry): | |
""" | |
Overriden method to check for duplicates entries, if a user tries to | |
add an entry that already exists, the method will raise a ValueError | |
exception. | |
**Keyword argument**: | |
- *entry*: an instance of polib._BaseEntry | |
**Tests**: | |
>>> e1 = POEntry(msgid='foobar', msgstr='spam') | |
>>> e2 = POEntry(msgid='foobar', msgstr='eggs') | |
>>> po = POFile(check_for_duplicates=True) | |
>>> po.append(e1) | |
>>> try: | |
... po.append(e2) | |
... except ValueError, e: | |
... unicode(e) | |
u'Entry "foobar" already exists' | |
""" | |
if self.check_for_duplicates and entry in self: | |
raise ValueError('Entry "%s" already exists' % entry.msgid) | |
super(_BaseFile, self).append(entry) | |
def insert(self, index, entry): | |
""" | |
Overriden method to check for duplicates entries, if a user tries to | |
insert an entry that already exists, the method will raise a ValueError | |
exception. | |
**Keyword arguments**: | |
- *index*: index at which the entry should be inserted | |
- *entry*: an instance of polib._BaseEntry | |
**Tests**: | |
>>> import polib | |
>>> polib.check_for_duplicates = True | |
>>> e1 = POEntry(msgid='foobar', msgstr='spam') | |
>>> e2 = POEntry(msgid='barfoo', msgstr='eggs') | |
>>> e3 = POEntry(msgid='foobar', msgstr='eggs') | |
>>> po = POFile(check_for_duplicates=True) | |
>>> po.insert(0, e1) | |
>>> po.insert(1, e2) | |
>>> try: | |
... po.insert(0, e3) | |
... except ValueError, e: | |
... unicode(e) | |
u'Entry "foobar" already exists' | |
""" | |
if self.check_for_duplicates and entry in self: | |
raise ValueError('Entry "%s" already exists' % entry.msgid) | |
super(_BaseFile, self).insert(index, entry) | |
def __repr__(self): | |
"""Return the official string representation of the object.""" | |
return '<%s instance at %x>' % (self.__class__.__name__, id(self)) | |
def metadata_as_entry(self): | |
""" | |
Return the metadata as an entry: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_fuzzy_header.po') | |
>>> unicode(po) == unicode(open('tests/test_fuzzy_header.po').read()) | |
True | |
""" | |
e = POEntry(msgid='') | |
mdata = self.ordered_metadata() | |
if mdata: | |
strs = [] | |
e._multiline_str['msgstr'] = '' | |
for name, value in mdata: | |
# Strip whitespace off each line in a multi-line entry | |
strs.append('%s: %s' % (name, value)) | |
e.msgstr = '\n'.join(strs) + '\n' | |
e._multiline_str['msgstr'] = '__POLIB__NL__'.join( | |
[s + '\n' for s in strs]) | |
if self.metadata_is_fuzzy: | |
e.flags.append('fuzzy') | |
return e | |
def save(self, fpath=None, repr_method='__str__'): | |
""" | |
Save the po file to file *fpath* if no file handle exists for | |
the object. If there's already an open file and no fpath is | |
provided, then the existing file is rewritten with the modified | |
data. | |
**Keyword arguments**: | |
- *fpath*: string, full or relative path to the file. | |
- *repr_method*: string, the method to use for output. | |
""" | |
if self.fpath is None and fpath is None: | |
raise IOError('You must provide a file path to save() method') | |
contents = getattr(self, repr_method)() | |
if fpath is None: | |
fpath = self.fpath | |
if repr_method == 'to_binary': | |
fhandle = open(fpath, 'wb') | |
else: | |
fhandle = codecs.open(fpath, 'w', self.encoding) | |
if type(contents) != types.UnicodeType: | |
contents = contents.decode(self.encoding) | |
fhandle.write(contents) | |
fhandle.close() | |
def find(self, st, by='msgid', include_obsolete_entries=False): | |
""" | |
Find entry which msgid (or property identified by the *by* | |
attribute) matches the string *st*. | |
**Keyword arguments**: | |
- *st*: string, the string to search for | |
- *by*: string, the comparison attribute | |
- *include_obsolete_entries*: boolean, whether to also search in | |
entries that are obsolete. | |
**Examples**: | |
>>> po = pofile('tests/test_utf8.po') | |
>>> entry = po.find('Thursday') | |
>>> entry.msgstr | |
u'Jueves' | |
>>> entry = po.find('Some unexistant msgid') | |
>>> entry is None | |
True | |
>>> entry = po.find('Jueves', 'msgstr') | |
>>> entry.msgid | |
u'Thursday' | |
""" | |
for e in self: | |
if getattr(e, by) == st: | |
return e | |
if include_obsolete_entries: | |
for e in self.obsolete_entries(): | |
if getattr(e, by) == st: | |
return e | |
return None | |
def ordered_metadata(self): | |
""" | |
Convenience method that return the metadata ordered. The return | |
value is list of tuples (metadata name, metadata_value). | |
""" | |
# copy the dict first | |
metadata = self.metadata.copy() | |
data_order = [ | |
'Project-Id-Version', | |
'Report-Msgid-Bugs-To', | |
'POT-Creation-Date', | |
'PO-Revision-Date', | |
'Last-Translator', | |
'Language-Team', | |
'MIME-Version', | |
'Content-Type', | |
'Content-Transfer-Encoding' | |
] | |
ordered_data = [] | |
for data in data_order: | |
try: | |
value = metadata.pop(data) | |
ordered_data.append((data, value)) | |
except KeyError: | |
pass | |
# the rest of the metadata won't be ordered there are no specs for this | |
keys = metadata.keys() | |
list(keys).sort() | |
for data in keys: | |
value = metadata[data] | |
ordered_data.append((data, value)) | |
return ordered_data | |
def to_binary(self): | |
""" | |
Return the mofile binary representation. | |
""" | |
import array | |
import struct | |
import types | |
offsets = [] | |
entries = self.translated_entries() | |
# the keys are sorted in the .mo file | |
def cmp(_self, other): | |
if _self.msgid > other.msgid: | |
return 1 | |
elif _self.msgid < other.msgid: | |
return -1 | |
else: | |
return 0 | |
# add metadata entry | |
entries.sort(cmp) | |
mentry = self.metadata_as_entry() | |
mentry.msgstr = mentry.msgstr.replace('\\n', '').lstrip() | |
entries = [mentry] + entries | |
entries_len = len(entries) | |
ids, strs = '', '' | |
for e in entries: | |
# For each string, we need size and file offset. Each string is | |
# NUL terminated; the NUL does not count into the size. | |
if e.msgid_plural: | |
indexes = e.msgstr_plural.keys() | |
indexes.sort() | |
msgstr = [] | |
for index in indexes: | |
msgstr.append(e.msgstr_plural[index]) | |
msgid = self._encode(e.msgid + '\0' + e.msgid_plural) | |
msgstr = self._encode('\0'.join(msgstr)) | |
else: | |
msgid = self._encode(e.msgid) | |
msgstr = self._encode(e.msgstr) | |
offsets.append((len(ids), len(msgid), len(strs), len(msgstr))) | |
ids += msgid + '\0' | |
strs += msgstr + '\0' | |
# The header is 7 32-bit unsigned integers. | |
keystart = 7*4+16*entries_len | |
# 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", | |
0x950412de, # Magic number | |
0, # Version | |
entries_len, # # of entries | |
7*4, # start of key index | |
7*4+entries_len*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 _encode(self, mixed): | |
""" | |
Encode the given argument with the file encoding if the type is unicode | |
and return the encoded string. | |
""" | |
if type(mixed) == types.UnicodeType: | |
return mixed.encode(self.encoding) | |
return mixed | |
# }}} | |
# class POFile {{{ | |
class POFile(_BaseFile): | |
''' | |
Po (or Pot) file reader/writer. | |
POFile objects inherit the list objects methods. | |
**Example**: | |
>>> po = POFile() | |
>>> entry1 = POEntry( | |
... msgid="Some english text", | |
... msgstr="Un texte en anglais" | |
... ) | |
>>> entry1.occurrences = [('testfile', 12),('another_file', 1)] | |
>>> entry1.comment = "Some useful comment" | |
>>> entry2 = POEntry( | |
... msgid="Peace in some languages", | |
... msgstr="Pace سلام שלום Hasîtî 和平", | |
... ) | |
>>> entry2.occurrences = [('testfile', 15),('another_file', 5)] | |
>>> entry2.comment = "Another useful comment" | |
>>> entry3 = POEntry( | |
... msgid='Some entry with quotes " \\"', | |
... msgstr='Un message unicode avec des quotes " \\"' | |
... ) | |
>>> entry3.comment = "Test string quoting" | |
>>> po.append(entry1) | |
>>> po.append(entry2) | |
>>> po.append(entry3) | |
>>> po.header = "Some Header" | |
>>> print(po) | |
# Some Header | |
msgid "" | |
msgstr "" | |
<BLANKLINE> | |
#. Some useful comment | |
#: testfile:12 another_file:1 | |
msgid "Some english text" | |
msgstr "Un texte en anglais" | |
<BLANKLINE> | |
#. Another useful comment | |
#: testfile:15 another_file:5 | |
msgid "Peace in some languages" | |
msgstr "Pace سلام שלום Hasîtî 和平" | |
<BLANKLINE> | |
#. Test string quoting | |
msgid "Some entry with quotes \\" \\"" | |
msgstr "Un message unicode avec des quotes \\" \\"" | |
<BLANKLINE> | |
''' | |
def __unicode__(self): | |
"""Return the string representation of the po file""" | |
ret, headers = '', self.header.split('\n') | |
for header in headers: | |
if header[:1] in [',', ':']: | |
ret += '#%s\n' % header | |
else: | |
ret += '# %s\n' % header | |
if type(ret) != types.UnicodeType: | |
ret = unicode(ret, self.encoding) | |
return ret + _BaseFile.__unicode__(self) | |
def save_as_mofile(self, fpath): | |
""" | |
Save the binary representation of the file to *fpath*. | |
**Keyword arguments**: | |
- *fpath*: string, full or relative path to the file. | |
""" | |
_BaseFile.save(self, fpath, 'to_binary') | |
def percent_translated(self): | |
""" | |
Convenience method that return the percentage of translated | |
messages. | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_pofile_helpers.po') | |
>>> po.percent_translated() | |
50 | |
>>> po = POFile() | |
>>> po.percent_translated() | |
100 | |
""" | |
total = len([e for e in self if not e.obsolete]) | |
if total == 0: | |
return 100 | |
translated = len(self.translated_entries()) | |
return int((100.00 / float(total)) * translated) | |
def translated_entries(self): | |
""" | |
Convenience method that return a list of translated entries. | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_pofile_helpers.po') | |
>>> len(po.translated_entries()) | |
6 | |
""" | |
return [e for e in self if e.translated()] | |
def untranslated_entries(self): | |
""" | |
Convenience method that return a list of untranslated entries. | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_pofile_helpers.po') | |
>>> len(po.untranslated_entries()) | |
4 | |
""" | |
return [e for e in self if not e.translated() and not e.obsolete \ | |
and not 'fuzzy' in e.flags] | |
def fuzzy_entries(self): | |
""" | |
Convenience method that return the list of 'fuzzy' entries. | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_pofile_helpers.po') | |
>>> len(po.fuzzy_entries()) | |
2 | |
""" | |
return [e for e in self if 'fuzzy' in e.flags] | |
def obsolete_entries(self): | |
""" | |
Convenience method that return the list of obsolete entries. | |
**Example**: | |
>>> import polib | |
>>> po = polib.pofile('tests/test_pofile_helpers.po') | |
>>> len(po.obsolete_entries()) | |
4 | |
""" | |
return [e for e in self if e.obsolete] | |
def merge(self, refpot): | |
""" | |
XXX this could not work if encodings are different, needs thinking | |
and general refactoring of how polib handles encoding... | |
Convenience method that merge the current pofile with the pot file | |
provided. It behaves exactly as the gettext msgmerge utility: | |
- comments of this file will be preserved, but extracted comments | |
and occurrences will be discarded | |
- any translations or comments in the file will be discarded, | |
however dot comments and file positions will be preserved | |
**Keyword argument**: | |
- *refpot*: object POFile, the reference catalog. | |
**Example**: | |
>>> import polib | |
>>> refpot = polib.pofile('tests/test_merge.pot') | |
>>> po = polib.pofile('tests/test_merge_before.po') | |
>>> po.merge(refpot) | |
>>> expected_po = polib.pofile('tests/test_merge_after.po') | |
>>> unicode(po) == unicode(expected_po) | |
True | |
""" | |
for entry in refpot: | |
e = self.find(entry.msgid, include_obsolete_entries=True) | |
if e is None: | |
e = POEntry() | |
self.append(e) | |
e.merge(entry) | |
# ok, now we must "obsolete" entries that are not in the refpot | |
# anymore | |
for entry in self: | |
if refpot.find(entry.msgid) is None: | |
entry.obsolete = True | |
# }}} | |
# class MOFile {{{ | |
class MOFile(_BaseFile): | |
''' | |
Mo file reader/writer. | |
MOFile objects inherit the list objects methods. | |
**Example**: | |
>>> mo = MOFile() | |
>>> entry1 = POEntry( | |
... msgid="Some english text", | |
... msgstr="Un texte en anglais" | |
... ) | |
>>> entry2 = POEntry( | |
... msgid="I need my dirty cheese", | |
... msgstr="Je veux mon sale fromage" | |
... ) | |
>>> entry3 = MOEntry( | |
... msgid='Some entry with quotes " \\"', | |
... msgstr='Un message unicode avec des quotes " \\"' | |
... ) | |
>>> mo.append(entry1) | |
>>> mo.append(entry2) | |
>>> mo.append(entry3) | |
>>> print(mo) | |
msgid "" | |
msgstr "" | |
<BLANKLINE> | |
msgid "Some english text" | |
msgstr "Un texte en anglais" | |
<BLANKLINE> | |
msgid "I need my dirty cheese" | |
msgstr "Je veux mon sale fromage" | |
<BLANKLINE> | |
msgid "Some entry with quotes \\" \\"" | |
msgstr "Un message unicode avec des quotes \\" \\"" | |
<BLANKLINE> | |
''' | |
def __init__(self, *args, **kwargs): | |
""" | |
MOFile constructor. Mo files have two other properties: | |
- magic_number: the magic_number of the binary file, | |
- version: the version of the mo spec. | |
""" | |
_BaseFile.__init__(self, *args, **kwargs) | |
self.magic_number = None | |
self.version = 0 | |
def save_as_pofile(self, fpath): | |
""" | |
Save the string representation of the file to *fpath*. | |
**Keyword argument**: | |
- *fpath*: string, full or relative path to the file. | |
""" | |
_BaseFile.save(self, fpath) | |
def save(self, fpath): | |
""" | |
Save the binary representation of the file to *fpath*. | |
**Keyword argument**: | |
- *fpath*: string, full or relative path to the file. | |
""" | |
_BaseFile.save(self, fpath, 'to_binary') | |
def percent_translated(self): | |
""" | |
Convenience method to keep the same interface with POFile instances. | |
""" | |
return 100 | |
def translated_entries(self): | |
""" | |
Convenience method to keep the same interface with POFile instances. | |
""" | |
return self | |
def untranslated_entries(self): | |
""" | |
Convenience method to keep the same interface with POFile instances. | |
""" | |
return [] | |
def fuzzy_entries(self): | |
""" | |
Convenience method to keep the same interface with POFile instances. | |
""" | |
return [] | |
def obsolete_entries(self): | |
""" | |
Convenience method to keep the same interface with POFile instances. | |
""" | |
return [] | |
# }}} | |
# class _BaseEntry {{{ | |
class _BaseEntry(object): | |
""" | |
Base class for POEntry or MOEntry objects. | |
This class must *not* be instanciated directly. | |
""" | |
def __init__(self, *args, **kwargs): | |
"""Base Entry constructor.""" | |
self.msgid = kwargs.get('msgid', '') | |
self.msgstr = kwargs.get('msgstr', '') | |
self.msgid_plural = kwargs.get('msgid_plural', '') | |
self.msgstr_plural = kwargs.get('msgstr_plural', {}) | |
self.obsolete = kwargs.get('obsolete', False) | |
self.encoding = kwargs.get('encoding', default_encoding) | |
self.msgctxt = kwargs.get('msgctxt', None) | |
self._multiline_str = {} | |
def __repr__(self): | |
"""Return the official string representation of the object.""" | |
return '<%s instance at %x>' % (self.__class__.__name__, id(self)) | |
def __unicode__(self, wrapwidth=78): | |
""" | |
Unicode representation of the entry. | |
""" | |
if self.obsolete: | |
delflag = '#~ ' | |
else: | |
delflag = '' | |
ret = [] | |
# write the msgctxt if any | |
if self.msgctxt is not None: | |
ret += self._str_field("msgctxt", delflag, "", self.msgctxt) | |
# write the msgid | |
ret += self._str_field("msgid", delflag, "", self.msgid) | |
# write the msgid_plural if any | |
if self.msgid_plural: | |
ret += self._str_field("msgid_plural", delflag, "", self.msgid_plural) | |
if self.msgstr_plural: | |
# write the msgstr_plural if any | |
msgstrs = self.msgstr_plural | |
keys = list(msgstrs) | |
keys.sort() | |
for index in keys: | |
msgstr = msgstrs[index] | |
plural_index = '[%s]' % index | |
ret += self._str_field("msgstr", delflag, plural_index, msgstr) | |
else: | |
# otherwise write the msgstr | |
ret += self._str_field("msgstr", delflag, "", self.msgstr) | |
ret.append('') | |
ret = '\n'.join(ret) | |
if type(ret) != types.UnicodeType: | |
return unicode(ret, self.encoding) | |
return ret | |
def __str__(self): | |
""" | |
String representation of the entry. | |
""" | |
return unicode(self).encode(self.encoding) | |
def _str_field(self, fieldname, delflag, plural_index, field): | |
if (fieldname + plural_index) in self._multiline_str: | |
field = self._multiline_str[fieldname + plural_index] | |
lines = [''] + field.split('__POLIB__NL__') | |
else: | |
lines = field.splitlines(True) | |
if len(lines) > 1: | |
lines = ['']+lines # start with initial empty line | |
else: | |
lines = [field] # needed for the empty string case | |
if fieldname.startswith('previous_'): | |
# quick and dirty trick to get the real field name | |
fieldname = fieldname[9:] | |
ret = ['%s%s%s "%s"' % (delflag, fieldname, plural_index, | |
escape(lines.pop(0)))] | |
for mstr in lines: | |
ret.append('%s"%s"' % (delflag, escape(mstr))) | |
return ret | |
# }}} | |
# class POEntry {{{ | |
class POEntry(_BaseEntry): | |
""" | |
Represents a po file entry. | |
**Examples**: | |
>>> entry = POEntry(msgid='Welcome', msgstr='Bienvenue') | |
>>> entry.occurrences = [('welcome.py', 12), ('anotherfile.py', 34)] | |
>>> print(entry) | |
#: welcome.py:12 anotherfile.py:34 | |
msgid "Welcome" | |
msgstr "Bienvenue" | |
<BLANKLINE> | |
>>> entry = POEntry() | |
>>> entry.occurrences = [('src/some-very-long-filename-that-should-not-be-wrapped-even-if-it-is-larger-than-the-wrap-limit.c', 32), ('src/eggs.c', 45)] | |
>>> entry.comment = 'A plural translation. This is a very very very long line please do not wrap, this is just for testing comment wrapping...' | |
>>> entry.tcomment = 'A plural translation. This is a very very very long line please do not wrap, this is just for testing comment wrapping...' | |
>>> entry.flags.append('c-format') | |
>>> entry.previous_msgctxt = '@somecontext' | |
>>> entry.previous_msgid = 'I had eggs but no spam !' | |
>>> entry.previous_msgid_plural = 'I had eggs and %d spam !' | |
>>> entry.msgctxt = '@somenewcontext' | |
>>> entry.msgid = 'I have spam but no egg !' | |
>>> entry.msgid_plural = 'I have spam and %d eggs !' | |
>>> entry.msgstr_plural[0] = "J'ai du jambon mais aucun oeuf !" | |
>>> entry.msgstr_plural[1] = "J'ai du jambon et %d oeufs !" | |
>>> print(entry) | |
#. A plural translation. This is a very very very long line please do not | |
#. wrap, this is just for testing comment wrapping... | |
# A plural translation. This is a very very very long line please do not wrap, | |
# this is just for testing comment wrapping... | |
#: src/some-very-long-filename-that-should-not-be-wrapped-even-if-it-is-larger-than-the-wrap-limit.c:32 | |
#: src/eggs.c:45 | |
#, c-format | |
#| msgctxt "@somecontext" | |
#| msgid "I had eggs but no spam !" | |
#| msgid_plural "I had eggs and %d spam !" | |
msgctxt "@somenewcontext" | |
msgid "I have spam but no egg !" | |
msgid_plural "I have spam and %d eggs !" | |
msgstr[0] "J'ai du jambon mais aucun oeuf !" | |
msgstr[1] "J'ai du jambon et %d oeufs !" | |
<BLANKLINE> | |
""" | |
def __init__(self, *args, **kwargs): | |
"""POEntry constructor.""" | |
_BaseEntry.__init__(self, *args, **kwargs) | |
self.comment = kwargs.get('comment', '') | |
self.tcomment = kwargs.get('tcomment', '') | |
self.occurrences = kwargs.get('occurrences', []) | |
self.flags = kwargs.get('flags', []) | |
self.previous_msgctxt = kwargs.get('previous_msgctxt', None) | |
self.previous_msgid = kwargs.get('previous_msgid', None) | |
self.previous_msgid_plural = kwargs.get('previous_msgid_plural', None) | |
def __unicode__(self, wrapwidth=78): | |
""" | |
Return the string representation of the entry. | |
""" | |
if self.obsolete: | |
return _BaseEntry.__unicode__(self) | |
ret = [] | |
# comment first, if any (with text wrapping as xgettext does) | |
if self.comment != '': | |
for comment in self.comment.split('\n'): | |
if wrapwidth > 0 and len(comment) > wrapwidth-3: | |
ret += textwrap.wrap(comment, wrapwidth, | |
initial_indent='#. ', | |
subsequent_indent='#. ', | |
break_long_words=False) | |
else: | |
ret.append('#. %s' % comment) | |
# translator comment, if any (with text wrapping as xgettext does) | |
if self.tcomment != '': | |
for tcomment in self.tcomment.split('\n'): | |
if wrapwidth > 0 and len(tcomment) > wrapwidth-2: | |
ret += textwrap.wrap(tcomment, wrapwidth, | |
initial_indent='# ', | |
subsequent_indent='# ', | |
break_long_words=False) | |
else: | |
ret.append('# %s' % tcomment) | |
# occurrences (with text wrapping as xgettext does) | |
if self.occurrences: | |
filelist = [] | |
for fpath, lineno in self.occurrences: | |
if lineno: | |
filelist.append('%s:%s' % (fpath, lineno)) | |
else: | |
filelist.append(fpath) | |
filestr = ' '.join(filelist) | |
if wrapwidth > 0 and len(filestr)+3 > wrapwidth: | |
# XXX textwrap split words that contain hyphen, this is not | |
# what we want for filenames, so the dirty hack is to | |
# temporally replace hyphens with a char that a file cannot | |
# contain, like "*" | |
lines = textwrap.wrap(filestr.replace('-', '*'), | |
wrapwidth, | |
initial_indent='#: ', | |
subsequent_indent='#: ', | |
break_long_words=False) | |
# end of the replace hack | |
for line in lines: | |
ret.append(line.replace('*', '-')) | |
else: | |
ret.append('#: '+filestr) | |
# flags | |
if self.flags: | |
flags = [] | |
for flag in self.flags: | |
flags.append(flag) | |
ret.append('#, %s' % ', '.join(flags)) | |
# previous context and previous msgid/msgid_plural | |
if self.previous_msgctxt: | |
ret += self._str_field("previous_msgctxt", "#| ", "", | |
self.previous_msgctxt) | |
if self.previous_msgid: | |
ret += self._str_field("previous_msgid", "#| ", "", | |
self.previous_msgid) | |
if self.previous_msgid_plural: | |
ret += self._str_field("previous_msgid_plural", "#| ", "", | |
self.previous_msgid_plural) | |
ret.append(_BaseEntry.__unicode__(self)) | |
ret = '\n'.join(ret) | |
if type(ret) != types.UnicodeType: | |
return unicode(ret, self.encoding) | |
return ret | |
def __cmp__(self, other): | |
''' | |
Called by comparison operations if rich comparison is not defined. | |
**Tests**: | |
>>> a = POEntry(msgid='a', occurrences=[('b.py', 1), ('b.py', 3)]) | |
>>> b = POEntry(msgid='b', occurrences=[('b.py', 1), ('b.py', 3)]) | |
>>> c1 = POEntry(msgid='c1', occurrences=[('a.py', 1), ('b.py', 1)]) | |
>>> c2 = POEntry(msgid='c2', occurrences=[('a.py', 1), ('a.py', 3)]) | |
>>> po = POFile() | |
>>> po.append(a) | |
>>> po.append(b) | |
>>> po.append(c1) | |
>>> po.append(c2) | |
>>> po.sort() | |
>>> print(po) | |
# | |
msgid "" | |
msgstr "" | |
<BLANKLINE> | |
#: a.py:1 a.py:3 | |
msgid "c2" | |
msgstr "" | |
<BLANKLINE> | |
#: a.py:1 b.py:1 | |
msgid "c1" | |
msgstr "" | |
<BLANKLINE> | |
#: b.py:1 b.py:3 | |
msgid "a" | |
msgstr "" | |
<BLANKLINE> | |
#: b.py:1 b.py:3 | |
msgid "b" | |
msgstr "" | |
<BLANKLINE> | |
''' | |
def compare_occurrences(a, b): | |
""" | |
Compare an entry occurrence with another one. | |
""" | |
if a[0] != b[0]: | |
return a[0] < b[0] | |
if a[1] != b[1]: | |
return a[1] < b[1] | |
return 0 | |
# First: Obsolete test | |
if self.obsolete != other.obsolete: | |
if self.obsolete: | |
return -1 | |
else: | |
return 1 | |
# Work on a copy to protect original | |
occ1 = self.occurrences[:] | |
occ2 = other.occurrences[:] | |
# Sorting using compare method | |
occ1.sort(compare_occurrences) | |
occ2.sort(compare_occurrences) | |
# Comparing sorted occurrences | |
pos = 0 | |
for entry1 in occ1: | |
try: | |
entry2 = occ2[pos] | |
except IndexError: | |
return 1 | |
pos = pos + 1 | |
if entry1[0] != entry2[0]: | |
if entry1[0] > entry2[0]: | |
return 1 | |
else: | |
return -1 | |
if entry1[1] != entry2[1]: | |
if entry1[1] > entry2[1]: | |
return 1 | |
else: | |
return -1 | |
# Finally: Compare message ID | |
if self.msgid > other.msgid: return 1 | |
else: return -1 | |
def translated(self): | |
""" | |
Return True if the entry has been translated or False. | |
""" | |
if self.obsolete or 'fuzzy' in self.flags: | |
return False | |
if self.msgstr != '': | |
return True | |
if self.msgstr_plural: | |
for pos in self.msgstr_plural: | |
if self.msgstr_plural[pos] == '': | |
return False | |
return True | |
return False | |
def merge(self, other): | |
""" | |
Merge the current entry with the given pot entry. | |
""" | |
self.msgid = other.msgid | |
self.msgctxt = other.msgctxt | |
self.occurrences = other.occurrences | |
self.comment = other.comment | |
self.flags = other.flags | |
self.msgid_plural = other.msgid_plural | |
self.obsolete = other.obsolete | |
self.previous_msgctxt = other.previous_msgctxt | |
self.previous_msgid = other.previous_msgid | |
self.previous_msgid_plural = other.previous_msgid_plural | |
if other.msgstr_plural: | |
for pos in other.msgstr_plural: | |
try: | |
# keep existing translation at pos if any | |
self.msgstr_plural[pos] | |
except KeyError: | |
self.msgstr_plural[pos] = '' | |
# }}} | |
# class MOEntry {{{ | |
class MOEntry(_BaseEntry): | |
""" | |
Represents a mo file entry. | |
**Examples**: | |
>>> entry = MOEntry() | |
>>> entry.msgid = 'translate me !' | |
>>> entry.msgstr = 'traduisez moi !' | |
>>> print(entry) | |
msgid "translate me !" | |
msgstr "traduisez moi !" | |
<BLANKLINE> | |
""" | |
pass | |
# }}} | |
# class _POFileParser {{{ | |
class _POFileParser(object): | |
""" | |
A finite state machine to parse efficiently and correctly po | |
file format. | |
""" | |
def __init__(self, fpath, *args, **kwargs): | |
""" | |
Constructor. | |
**Arguments**: | |
- *fpath*: string, path to the po file | |
- *encoding*: string, the encoding to use, defaults to | |
"default_encoding" global variable (optional), | |
- *check_for_duplicates*: whether to check for duplicate entries | |
when adding entries to the file, default: False (optional). | |
""" | |
enc = kwargs.get('encoding', default_encoding) | |
check_dup = kwargs.get('check_for_duplicates', False) | |
try: | |
self.fhandle = codecs.open(fpath, 'rU', enc) | |
except LookupError: | |
enc = default_encoding | |
self.fhandle = codecs.open(fpath, 'rU', enc) | |
self.instance = POFile( | |
fpath=fpath, | |
encoding=enc, | |
check_for_duplicates=check_dup | |
) | |
self.transitions = {} | |
self.current_entry = POEntry() | |
self.current_state = 'ST' | |
self.current_token = None | |
# two memo flags used in handlers | |
self.msgstr_index = 0 | |
self.entry_obsolete = 0 | |
# Configure the state machine, by adding transitions. | |
# Signification of symbols: | |
# * ST: Beginning of the file (start) | |
# * HE: Header | |
# * TC: a translation comment | |
# * GC: a generated comment | |
# * OC: a file/line occurence | |
# * FL: a flags line | |
# * CT: a message context | |
# * PC: a previous msgctxt | |
# * PM: a previous msgid | |
# * PP: a previous msgid_plural | |
# * MI: a msgid | |
# * MP: a msgid plural | |
# * MS: a msgstr | |
# * MX: a msgstr plural | |
# * MC: a msgid or msgstr continuation line | |
all = ['ST', 'HE', 'GC', 'OC', 'FL', 'CT', 'PC', 'PM', 'PP', 'TC', | |
'MS', 'MP', 'MX', 'MI'] | |
self.add('TC', ['ST', 'HE'], 'HE') | |
self.add('TC', ['GC', 'OC', 'FL', 'TC', 'PC', 'PM', 'PP', 'MS', | |
'MP', 'MX', 'MI'], 'TC') | |
self.add('GC', all, 'GC') | |
self.add('OC', all, 'OC') | |
self.add('FL', all, 'FL') | |
self.add('PC', all, 'PC') | |
self.add('PM', all, 'PM') | |
self.add('PP', all, 'PP') | |
self.add('CT', ['ST', 'HE', 'GC', 'OC', 'FL', 'TC', 'PC', 'PM', | |
'PP', 'MS', 'MX'], 'CT') | |
self.add('MI', ['ST', 'HE', 'GC', 'OC', 'FL', 'CT', 'TC', 'PC', | |
'PM', 'PP', 'MS', 'MX'], 'MI') | |
self.add('MP', ['TC', 'GC', 'PC', 'PM', 'PP', 'MI'], 'MP') | |
self.add('MS', ['MI', 'MP', 'TC'], 'MS') | |
self.add('MX', ['MI', 'MX', 'MP', 'TC'], 'MX') | |
self.add('MC', ['CT', 'MI', 'MP', 'MS', 'MX', 'PM', 'PP', 'PC'], 'MC') | |
def parse(self): | |
""" | |
Run the state machine, parse the file line by line and call process() | |
with the current matched symbol. | |
""" | |
i, lastlen = 1, 0 | |
for line in self.fhandle: | |
line = line.strip() | |
if line == '': | |
i = i+1 | |
continue | |
if line[:3] == '#~ ': | |
line = line[3:] | |
self.entry_obsolete = 1 | |
else: | |
self.entry_obsolete = 0 | |
self.current_token = line | |
if line[:2] == '#:': | |
# we are on a occurrences line | |
self.process('OC', i) | |
elif line[:9] == 'msgctxt "': | |
# we are on a msgctxt | |
self.process('CT', i) | |
elif line[:7] == 'msgid "': | |
# we are on a msgid | |
self.process('MI', i) | |
elif line[:8] == 'msgstr "': | |
# we are on a msgstr | |
self.process('MS', i) | |
elif line[:1] == '"' or line[:4] == '#| "': | |
# we are on a continuation line or some metadata | |
self.process('MC', i) | |
elif line[:14] == 'msgid_plural "': | |
# we are on a msgid plural | |
self.process('MP', i) | |
elif line[:7] == 'msgstr[': | |
# we are on a msgstr plural | |
self.process('MX', i) | |
elif line[:3] == '#, ': | |
# we are on a flags line | |
self.process('FL', i) | |
elif line[:2] == '# ' or line == '#': | |
if line == '#': line = line + ' ' | |
# we are on a translator comment line | |
self.process('TC', i) | |
elif line[:2] == '#.': | |
# we are on a generated comment line | |
self.process('GC', i) | |
elif line[:15] == '#| msgid_plural': | |
# we are on a previous msgid_plural | |
self.process('PP', i) | |
elif line[:8] == '#| msgid': | |
self.process('PM', i) | |
# we are on a previous msgid | |
elif line[:10] == '#| msgctxt': | |
# we are on a previous msgctxt | |
self.process('PC', i) | |
i = i+1 | |
if self.current_entry: | |
# since entries are added when another entry is found, we must add | |
# the last entry here (only if there are lines) | |
self.instance.append(self.current_entry) | |
# before returning the instance, check if there's metadata and if | |
# so extract it in a dict | |
firstentry = self.instance[0] | |
if firstentry.msgid == '': # metadata found | |
# remove the entry | |
firstentry = self.instance.pop(0) | |
self.instance.metadata_is_fuzzy = firstentry.flags | |
key = None | |
for msg in firstentry.msgstr.splitlines(): | |
try: | |
key, val = msg.split(':', 1) | |
self.instance.metadata[key] = val.strip() | |
except: | |
if key is not None: | |
self.instance.metadata[key] += '\n'+ msg.strip() | |
# close opened file | |
self.fhandle.close() | |
return self.instance | |
def add(self, symbol, states, next_state): | |
""" | |
Add a transition to the state machine. | |
Keywords arguments: | |
symbol -- string, the matched token (two chars symbol) | |
states -- list, a list of states (two chars symbols) | |
next_state -- the next state the fsm will have after the action | |
""" | |
for state in states: | |
action = getattr(self, 'handle_%s' % next_state.lower()) | |
self.transitions[(symbol, state)] = (action, next_state) | |
def process(self, symbol, linenum): | |
""" | |
Process the transition corresponding to the current state and the | |
symbol provided. | |
Keywords arguments: | |
symbol -- string, the matched token (two chars symbol) | |
linenum -- integer, the current line number of the parsed file | |
""" | |
try: | |
(action, state) = self.transitions[(symbol, self.current_state)] | |
if action(): | |
self.current_state = state | |
except Exception, exc: | |
raise IOError('Syntax error in po file (line %s)' % linenum) | |
# state handlers | |
def handle_he(self): | |
"""Handle a header comment.""" | |
if self.instance.header != '': | |
self.instance.header += '\n' | |
self.instance.header += self.current_token[2:] | |
return 1 | |
def handle_tc(self): | |
"""Handle a translator comment.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
if self.current_entry.tcomment != '': | |
self.current_entry.tcomment += '\n' | |
self.current_entry.tcomment += self.current_token[2:] | |
return True | |
def handle_gc(self): | |
"""Handle a generated comment.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
if self.current_entry.comment != '': | |
self.current_entry.comment += '\n' | |
self.current_entry.comment += self.current_token[3:] | |
return True | |
def handle_oc(self): | |
"""Handle a file:num occurence.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
occurrences = self.current_token[3:].split() | |
for occurrence in occurrences: | |
if occurrence != '': | |
try: | |
fil, line = occurrence.split(':') | |
if not line.isdigit(): | |
fil = fil + line | |
line = '' | |
self.current_entry.occurrences.append((fil, line)) | |
except: | |
self.current_entry.occurrences.append((occurrence, '')) | |
return True | |
def handle_fl(self): | |
"""Handle a flags line.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.flags += self.current_token[3:].split(', ') | |
return True | |
def handle_pp(self): | |
"""Handle a previous msgid_plural line.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.previous_msgid_plural = \ | |
unescape(self.current_token[17:-1]) | |
return True | |
def handle_pm(self): | |
"""Handle a previous msgid line.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.previous_msgid = \ | |
unescape(self.current_token[10:-1]) | |
return True | |
def handle_pc(self): | |
"""Handle a previous msgctxt line.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.previous_msgctxt = \ | |
unescape(self.current_token[12:-1]) | |
return True | |
def handle_ct(self): | |
"""Handle a msgctxt.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.msgctxt = unescape(self.current_token[9:-1]) | |
return True | |
def handle_mi(self): | |
"""Handle a msgid.""" | |
if self.current_state in ['MC', 'MS', 'MX']: | |
self.instance.append(self.current_entry) | |
self.current_entry = POEntry() | |
self.current_entry.obsolete = self.entry_obsolete | |
self.current_entry.msgid = unescape(self.current_token[7:-1]) | |
return True | |
def handle_mp(self): | |
"""Handle a msgid plural.""" | |
self.current_entry.msgid_plural = unescape(self.current_token[14:-1]) | |
return True | |
def handle_ms(self): | |
"""Handle a msgstr.""" | |
self.current_entry.msgstr = unescape(self.current_token[8:-1]) | |
return True | |
def handle_mx(self): | |
"""Handle a msgstr plural.""" | |
index, value = self.current_token[7], self.current_token[11:-1] | |
self.current_entry.msgstr_plural[index] = unescape(value) | |
self.msgstr_index = index | |
return True | |
def handle_mc(self): | |
"""Handle a msgid or msgstr continuation line.""" | |
token = unescape(self.current_token[1:-1]) | |
if self.current_state == 'CT': | |
typ = 'msgctxt' | |
self.current_entry.msgctxt += token | |
elif self.current_state == 'MI': | |
typ = 'msgid' | |
self.current_entry.msgid += token | |
elif self.current_state == 'MP': | |
typ = 'msgid_plural' | |
self.current_entry.msgid_plural += token | |
elif self.current_state == 'MS': | |
typ = 'msgstr' | |
self.current_entry.msgstr += token | |
elif self.current_state == 'MX': | |
typ = 'msgstr[%s]' % self.msgstr_index | |
self.current_entry.msgstr_plural[self.msgstr_index] += token | |
elif self.current_state == 'PP': | |
typ = 'previous_msgid_plural' | |
token = token[3:] | |
self.current_entry.previous_msgid_plural += token | |
elif self.current_state == 'PM': | |
typ = 'previous_msgid' | |
token = token[3:] | |
self.current_entry.previous_msgid += token | |
elif self.current_state == 'PC': | |
typ = 'previous_msgctxt' | |
token = token[3:] | |
self.current_entry.previous_msgctxt += token | |
if typ not in self.current_entry._multiline_str: | |
self.current_entry._multiline_str[typ] = token | |
else: | |
self.current_entry._multiline_str[typ] += "__POLIB__NL__" + token | |
# don't change the current state | |
return False | |
# }}} | |
# class _MOFileParser {{{ | |
class _MOFileParser(object): | |
""" | |
A class to parse binary mo files. | |
""" | |
BIG_ENDIAN = 0xde120495 | |
LITTLE_ENDIAN = 0x950412de | |
def __init__(self, fpath, *args, **kwargs): | |
""" | |
Constructor. | |
**Arguments**: | |
- *fpath*: string, path to the po file | |
- *encoding*: string, the encoding to use, defaults to | |
"default_encoding" global variable (optional), | |
- *check_for_duplicates*: whether to check for duplicate entries | |
when adding entries to the file, default: False (optional). | |
""" | |
enc = kwargs.get('encoding', default_encoding) | |
check_dup = kwargs.get('check_for_duplicates', False) | |
self.fhandle = open(fpath, 'rb') | |
self.instance = MOFile( | |
fpath=fpath, | |
encoding=enc, | |
check_for_duplicates=check_dup | |
) | |
def parse_magicnumber(self): | |
""" | |
Parse the magic number and raise an exception if not valid. | |
""" | |
def parse(self): | |
""" | |
Build the instance with the file handle provided in the | |
constructor. | |
""" | |
magic_number = self._readbinary('<I', 4) | |
if magic_number == self.LITTLE_ENDIAN: | |
ii = '<II' | |
elif magic_number == self.BIG_ENDIAN: | |
ii = '>II' | |
else: | |
raise IOError('Invalid mo file, magic number is incorrect !') | |
self.instance.magic_number = magic_number | |
# parse the version number and the number of strings | |
self.instance.version, numofstrings = self._readbinary(ii, 8) | |
# original strings and translation strings hash table offset | |
msgids_hash_offset, msgstrs_hash_offset = self._readbinary(ii, 8) | |
# move to msgid hash table and read length and offset of msgids | |
self.fhandle.seek(msgids_hash_offset) | |
msgids_index = [] | |
for i in range(numofstrings): | |
msgids_index.append(self._readbinary(ii, 8)) | |
# move to msgstr hash table and read length and offset of msgstrs | |
self.fhandle.seek(msgstrs_hash_offset) | |
msgstrs_index = [] | |
for i in range(numofstrings): | |
msgstrs_index.append(self._readbinary(ii, 8)) | |
# build entries | |
for i in range(numofstrings): | |
self.fhandle.seek(msgids_index[i][1]) | |
msgid = self.fhandle.read(msgids_index[i][0]) | |
self.fhandle.seek(msgstrs_index[i][1]) | |
msgstr = self.fhandle.read(msgstrs_index[i][0]) | |
if i == 0: # metadata | |
raw_metadata, metadata = msgstr.split('\n'), {} | |
for line in raw_metadata: | |
tokens = line.split(':', 1) | |
if tokens[0] != '': | |
try: | |
metadata[tokens[0]] = tokens[1].strip() | |
except IndexError: | |
metadata[tokens[0]] = '' | |
self.instance.metadata = metadata | |
continue | |
# test if we have a plural entry | |
msgid_tokens = msgid.split('\0') | |
if len(msgid_tokens) > 1: | |
entry = MOEntry( | |
msgid=msgid_tokens[0], | |
msgid_plural=msgid_tokens[1], | |
msgstr_plural=dict((k,v) for k,v in \ | |
enumerate(msgstr.split('\0'))) | |
) | |
else: | |
entry = MOEntry(msgid=msgid, msgstr=msgstr) | |
self.instance.append(entry) | |
# close opened file | |
self.fhandle.close() | |
return self.instance | |
def _readbinary(self, fmt, numbytes): | |
""" | |
Private method that unpack n bytes of data using format <fmt>. | |
It returns a tuple or a mixed value if the tuple length is 1. | |
""" | |
bytes = self.fhandle.read(numbytes) | |
tup = struct.unpack(fmt, bytes) | |
if len(tup) == 1: | |
return tup[0] | |
return tup | |
# }}} | |
# __main__ {{{ | |
if __name__ == '__main__': | |
""" | |
**Main function**:: | |
- to **test** the module just run: *python polib.py [-v]* | |
- to **profile** the module: *python polib.py -p <some_pofile.po>* | |
""" | |
import sys | |
if len(sys.argv) > 2 and sys.argv[1] == '-p': | |
def test(f): | |
if f.endswith('po'): | |
p = pofile(f) | |
else: | |
p = mofile(f) | |
s = unicode(p) | |
import profile | |
profile.run('test("'+sys.argv[2]+'")') | |
else: | |
import doctest | |
doctest.testmod() | |
# }}} |