/usr/lib/python3/dist-packages/polib.py is in python3-polib 1.0.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 | # -* 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 via the :func:`~polib.pofile` and
:func:`~polib.mofile` convenience functions.
"""
__author__ = 'David Jean Louis <izimobil@gmail.com>'
__version__ = '1.0.7'
__all__ = ['pofile', 'POFile', 'POEntry', 'mofile', 'MOFile', 'MOEntry',
'default_encoding', 'escape', 'unescape', 'detect_encoding', ]
import array
import codecs
import os
import re
import struct
import sys
import textwrap
try:
import io
except ImportError:
# replacement of io.open() for python < 2.6
# we use codecs instead
class io(object):
@staticmethod
def open(fpath, mode='r', encoding=None):
return codecs.open(fpath, mode, encoding)
# the default encoding to use when encoding cannot be detected
default_encoding = 'utf-8'
# python 2/3 compatibility helpers {{{
if sys.version_info[:2] < (3, 0):
PY3 = False
text_type = unicode
def b(s):
return s
def u(s):
return unicode(s, "unicode_escape")
else:
PY3 = True
text_type = str
def b(s):
return s.encode("latin-1")
def u(s):
return s
# }}}
# _pofile_or_mofile {{{
def _pofile_or_mofile(f, type, **kwargs):
"""
Internal function used by :func:`polib.pofile` and :func:`polib.mofile` to
honor the DRY concept.
"""
# get the file encoding
enc = kwargs.get('encoding')
if enc is None:
enc = detect_encoding(f, type == 'mofile')
# parse the file
kls = type == 'pofile' and _POFileParser or _MOFileParser
parser = kls(
f,
encoding=enc,
check_for_duplicates=kwargs.get('check_for_duplicates', False),
klass=kwargs.get('klass')
)
instance = parser.parse()
instance.wrapwidth = kwargs.get('wrapwidth', 78)
return instance
# }}}
# _is_file {{{
def _is_file(filename_or_contents):
"""
Safely returns the value of os.path.exists(filename_or_contents).
Arguments:
``filename_or_contents``
either a filename, or a string holding the contents of some file.
In the latter case, this function will always return False.
"""
try:
return os.path.exists(filename_or_contents)
except (ValueError, UnicodeEncodeError):
return False
# }}}
# function pofile() {{{
def pofile(pofile, **kwargs):
"""
Convenience function that parses the po or pot file ``pofile`` and returns
a :class:`~polib.POFile` instance.
Arguments:
``pofile``
string, full or relative path to the po/pot file or its content (data).
``wrapwidth``
integer, the wrap width, only useful when the ``-w`` option was passed
to xgettext (optional, default: ``78``).
``encoding``
string, the encoding to use (e.g. "utf-8") (default: ``None``, the
encoding will be auto-detected).
``check_for_duplicates``
whether to check for duplicate entries when adding entries to the
file (optional, default: ``False``).
``klass``
class which is used to instantiate the return value (optional,
default: ``None``, the return value with be a :class:`~polib.POFile`
instance).
"""
return _pofile_or_mofile(pofile, 'pofile', **kwargs)
# }}}
# function mofile() {{{
def mofile(mofile, **kwargs):
"""
Convenience function that parses the mo file ``mofile`` and returns a
:class:`~polib.MOFile` instance.
Arguments:
``mofile``
string, full or relative path to the mo file or its content (data).
``wrapwidth``
integer, the wrap width, only useful when the ``-w`` option was passed
to xgettext to generate the po file that was used to format the mo file
(optional, default: ``78``).
``encoding``
string, the encoding to use (e.g. "utf-8") (default: ``None``, the
encoding will be auto-detected).
``check_for_duplicates``
whether to check for duplicate entries when adding entries to the
file (optional, default: ``False``).
``klass``
class which is used to instantiate the return value (optional,
default: ``None``, the return value with be a :class:`~polib.POFile`
instance).
"""
return _pofile_or_mofile(mofile, 'mofile', **kwargs)
# }}}
# function detect_encoding() {{{
def detect_encoding(file, binary_mode=False):
"""
Try to detect the encoding used by the ``file``. The ``file`` argument can
be a PO or MO file path or a string containing the contents of the file.
If the encoding cannot be detected, the function will return the value of
``default_encoding``.
Arguments:
``file``
string, full or relative path to the po/mo file or its content.
``binary_mode``
boolean, set this to True if ``file`` is a mo file.
"""
PATTERN = r'"?Content-Type:.+? charset=([\w_\-:\.]+)'
rxt = re.compile(u(PATTERN))
rxb = re.compile(b(PATTERN))
def charset_exists(charset):
"""Check whether ``charset`` is valid or not."""
try:
codecs.lookup(charset)
except LookupError:
return False
return True
if not _is_file(file):
match = rxt.search(file)
if match:
enc = match.group(1).strip()
if charset_exists(enc):
return enc
else:
# For PY3, always treat as binary
if binary_mode or PY3:
mode = 'rb'
rx = rxb
else:
mode = 'r'
rx = rxt
f = open(file, mode)
for l in f.readlines():
match = rx.search(l)
if match:
f.close()
enc = match.group(1).strip()
if not isinstance(enc, text_type):
enc = enc.decode('utf-8')
if charset_exists(enc):
return enc
f.close()
return default_encoding
# }}}
# function escape() {{{
def escape(st):
"""
Escapes the characters ``\\\\``, ``\\t``, ``\\n``, ``\\r`` and ``"`` in
the given string ``st`` and returns it.
"""
return st.replace('\\', r'\\')\
.replace('\t', r'\t')\
.replace('\r', r'\r')\
.replace('\n', r'\n')\
.replace('\"', r'\"')
# }}}
# function unescape() {{{
def unescape(st):
"""
Unescapes the characters ``\\\\``, ``\\t``, ``\\n``, ``\\r`` and ``"`` in
the given string ``st`` and returns it.
"""
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 base class for the :class:`~polib.POFile` and :class:`~polib.MOFile`
classes. This class should **not** be instanciated directly.
"""
def __init__(self, *args, **kwargs):
"""
Constructor, accepts the following keyword arguments:
``pofile``
string, the path to the po or mo file, or its content as a string.
``wrapwidth``
integer, the wrap width, only useful when the ``-w`` option was
passed to xgettext (optional, default: ``78``).
``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, (optional, default: ``False``).
"""
list.__init__(self)
# the opened file handle
pofile = kwargs.get('pofile', None)
if pofile and _is_file(pofile):
self.fpath = pofile
else:
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):
"""
Returns the 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 = u('\n').join(ret)
assert isinstance(ret, text_type)
#if type(ret) != text_type:
# return unicode(ret, self.encoding)
return ret
if PY3:
def __str__(self):
return self.__unicode__()
else:
def __str__(self):
"""
Returns the string representation of the file.
"""
return unicode(self).encode(self.encoding)
def __contains__(self, entry):
"""
Overridden ``list`` 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 (the test is **case sensitive**) and the same
msgctxt (or none for both entries).
Argument:
``entry``
an instance of :class:`~polib._BaseEntry`.
"""
return self.find(entry.msgid, by='msgid', msgctxt=entry.msgctxt) \
is not None
def __eq__(self, other):
return str(self) == str(other)
def append(self, entry):
"""
Overridden method to check for duplicates entries, if a user tries to
add an entry that is already in the file, the method will raise a
``ValueError`` exception.
Argument:
``entry``
an instance of :class:`~polib._BaseEntry`.
"""
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):
"""
Overridden method to check for duplicates entries, if a user tries to
add an entry that is already in the file, the method will raise a
``ValueError`` exception.
Arguments:
``index``
index at which the entry should be inserted.
``entry``
an instance of :class:`~polib._BaseEntry`.
"""
if self.check_for_duplicates and entry in self:
raise ValueError('Entry "%s" already exists' % entry.msgid)
super(_BaseFile, self).insert(index, entry)
def metadata_as_entry(self):
"""
Returns the file metadata as a :class:`~polib.POFile` instance.
"""
e = POEntry(msgid='')
mdata = self.ordered_metadata()
if mdata:
strs = []
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'
if self.metadata_is_fuzzy:
e.flags.append('fuzzy')
return e
def save(self, fpath=None, repr_method='__unicode__'):
"""
Saves the po file to ``fpath``.
If it is an existing 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 = io.open(fpath, 'w', encoding=self.encoding)
if not isinstance(contents, text_type):
contents = contents.decode(self.encoding)
fhandle.write(contents)
fhandle.close()
# set the file path if not set
if self.fpath is None and fpath:
self.fpath = fpath
def find(self, st, by='msgid', include_obsolete_entries=False,
msgctxt=False):
"""
Find the entry which msgid (or property identified by the ``by``
argument) matches the string ``st``.
Keyword arguments:
``st``
string, the string to search for.
``by``
string, the property to use for comparison (default: ``msgid``).
``include_obsolete_entries``
boolean, whether to also search in entries that are obsolete.
``msgctxt``
string, allows specifying a specific message context for the
search.
"""
if include_obsolete_entries:
entries = self[:]
else:
entries = [e for e in self if not e.obsolete]
for e in entries:
if getattr(e, by) == st:
if msgctxt is not False and e.msgctxt != msgctxt:
continue
return e
return None
def ordered_metadata(self):
"""
Convenience method that returns an ordered version of the metadata
dictionary. 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',
'Language',
'Plural-Forms'
]
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 will be alphabetically ordered since there
# are no specs for this AFAIK
for data in sorted(metadata.keys()):
value = metadata[data]
ordered_data.append((data, value))
return ordered_data
def to_binary(self):
"""
Return the binary representation of the file.
"""
offsets = []
entries = self.translated_entries()
# the keys are sorted in the .mo file
def cmp(_self, other):
# msgfmt compares entries with msgctxt if it exists
self_msgid = _self.msgctxt and _self.msgctxt or _self.msgid
other_msgid = other.msgctxt and other.msgctxt or other.msgid
if self_msgid > other_msgid:
return 1
elif self_msgid < other_msgid:
return -1
else:
return 0
# add metadata entry
entries.sort(key=lambda o: o.msgctxt or o.msgid)
mentry = self.metadata_as_entry()
#mentry.msgstr = mentry.msgstr.replace('\\n', '').lstrip()
entries = [mentry] + entries
entries_len = len(entries)
ids, strs = b(''), b('')
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.
msgid = b('')
if e.msgctxt:
# Contexts are stored by storing the concatenation of the
# context, a <EOT> byte, and the original string
msgid = self._encode(e.msgctxt + '\4')
if e.msgid_plural:
msgstr = []
for index in sorted(e.msgstr_plural.keys()):
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 + b('\0')
strs += msgstr + b('\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",
# Magic number
MOFile.MAGIC,
# Version
0,
# number of entries
entries_len,
# start of key index
7 * 4,
# start of value index
7 * 4 + entries_len * 8,
# size and offset of hash table, we don't use hash tables
0, keystart
)
if PY3 and sys.version_info.minor > 1: # python 3.2 or superior
output += array.array("i", offsets).tobytes()
else:
output += array.array("i", offsets).tostring()
output += ids
output += strs
return output
def _encode(self, mixed):
"""
Encodes the given ``mixed`` argument with the file encoding if and
only if it's an unicode string and returns the encoded string.
"""
if isinstance(mixed, text_type):
mixed = mixed.encode(self.encoding)
return mixed
# }}}
# class POFile {{{
class POFile(_BaseFile):
"""
Po (or Pot) file reader/writer.
This class inherits the :class:`~polib._BaseFile` class and, by extension,
the python ``list`` type.
"""
def __unicode__(self):
"""
Returns the unicode representation of the po file.
"""
ret, headers = '', self.header.split('\n')
for header in headers:
if not len(header):
ret += "#\n"
elif header[:1] in [',', ':']:
ret += '#%s\n' % header
else:
ret += '# %s\n' % header
if not isinstance(ret, text_type):
ret = ret.decode(self.encoding)
return ret + _BaseFile.__unicode__(self)
def save_as_mofile(self, fpath):
"""
Saves the binary representation of the file to given ``fpath``.
Keyword argument:
``fpath``
string, full or relative path to the mo file.
"""
_BaseFile.save(self, fpath, 'to_binary')
def percent_translated(self):
"""
Convenience method that returns the percentage of translated
messages.
"""
total = len([e for e in self if not e.obsolete])
if total == 0:
return 100
translated = len(self.translated_entries())
return int(translated * 100 / float(total))
def translated_entries(self):
"""
Convenience method that returns the list of translated entries.
"""
return [e for e in self if e.translated()]
def untranslated_entries(self):
"""
Convenience method that returns the list of untranslated entries.
"""
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 returns the list of fuzzy entries.
"""
return [e for e in self if 'fuzzy' in e.flags]
def obsolete_entries(self):
"""
Convenience method that returns the list of obsolete entries.
"""
return [e for e in self if e.obsolete]
def merge(self, refpot):
"""
Convenience method that merges 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;
* the fuzzy flags are preserved.
Keyword argument:
``refpot``
object POFile, the reference catalog.
"""
# Store entries in dict/set for faster access
self_entries = dict((entry.msgid, entry) for entry in self)
refpot_msgids = set(entry.msgid for entry in refpot)
# Merge entries that are in the refpot
for entry in refpot:
e = self_entries.get(entry.msgid)
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 entry.msgid not in refpot_msgids:
entry.obsolete = True
# }}}
# class MOFile {{{
class MOFile(_BaseFile):
"""
Mo file reader/writer.
This class inherits the :class:`~polib._BaseFile` class and, by
extension, the python ``list`` type.
"""
MAGIC = 0x950412de
MAGIC_SWAPPED = 0xde120495
def __init__(self, *args, **kwargs):
"""
Constructor, accepts all keywords arguments accepted by
:class:`~polib._BaseFile` class.
"""
_BaseFile.__init__(self, *args, **kwargs)
self.magic_number = None
self.version = 0
def save_as_pofile(self, fpath):
"""
Saves the mofile as a pofile to ``fpath``.
Keyword argument:
``fpath``
string, full or relative path to the file.
"""
_BaseFile.save(self, fpath)
def save(self, fpath=None):
"""
Saves the mofile 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 :class:`~polib.POEntry` and :class:`~polib.MOEntry` classes.
This class should **not** be instanciated directly.
"""
def __init__(self, *args, **kwargs):
"""
Constructor, accepts the following keyword arguments:
``msgid``
string, the entry msgid.
``msgstr``
string, the entry msgstr.
``msgid_plural``
string, the entry msgid_plural.
``msgstr_plural``
list, the entry msgstr_plural lines.
``msgctxt``
string, the entry context (msgctxt).
``obsolete``
bool, whether the entry is "obsolete" or not.
``encoding``
string, the encoding to use, defaults to ``default_encoding``
global variable (optional).
"""
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.msgctxt = kwargs.get('msgctxt', None)
self.obsolete = kwargs.get('obsolete', False)
self.encoding = kwargs.get('encoding', default_encoding)
def __unicode__(self, wrapwidth=78):
"""
Returns the 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,
wrapwidth)
# write the msgid
ret += self._str_field("msgid", delflag, "", self.msgid, wrapwidth)
# write the msgid_plural if any
if self.msgid_plural:
ret += self._str_field("msgid_plural", delflag, "",
self.msgid_plural, wrapwidth)
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,
wrapwidth)
else:
# otherwise write the msgstr
ret += self._str_field("msgstr", delflag, "", self.msgstr,
wrapwidth)
ret.append('')
ret = u('\n').join(ret)
return ret
if PY3:
def __str__(self):
return self.__unicode__()
else:
def __str__(self):
"""
Returns the string representation of the entry.
"""
return unicode(self).encode(self.encoding)
def __eq__(self, other):
return str(self) == str(other)
def _str_field(self, fieldname, delflag, plural_index, field,
wrapwidth=78):
lines = field.splitlines(True)
if len(lines) > 1:
lines = [''] + lines # start with initial empty line
else:
escaped_field = escape(field)
specialchars_count = 0
for c in ['\\', '\n', '\r', '\t', '"']:
specialchars_count += field.count(c)
# comparison must take into account fieldname length + one space
# + 2 quotes (eg. msgid "<string>")
flength = len(fieldname) + 3
if plural_index:
flength += len(plural_index)
real_wrapwidth = wrapwidth - flength + specialchars_count
if wrapwidth > 0 and len(field) > real_wrapwidth:
# Wrap the line but take field name into account
lines = [''] + [unescape(item) for item in wrap(
escaped_field,
wrapwidth - 2, # 2 for quotes ""
drop_whitespace=False,
break_long_words=False
)]
else:
lines = [field]
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 line in lines:
ret.append('%s"%s"' % (delflag, escape(line)))
return ret
# }}}
# class POEntry {{{
class POEntry(_BaseEntry):
"""
Represents a po file entry.
"""
def __init__(self, *args, **kwargs):
"""
Constructor, accepts the following keyword arguments:
``comment``
string, the entry comment.
``tcomment``
string, the entry translator comment.
``occurrences``
list, the entry occurrences.
``flags``
list, the entry flags.
``previous_msgctxt``
string, the entry previous context.
``previous_msgid``
string, the entry previous msgid.
``previous_msgid_plural``
string, the entry previous msgid_plural.
``linenum``
integer, the line number of the entry
"""
_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)
self.linenum = kwargs.get('linenum', None)
def __unicode__(self, wrapwidth=78):
"""
Returns the unicode representation of the entry.
"""
if self.obsolete:
return _BaseEntry.__unicode__(self, wrapwidth)
ret = []
# comments first, if any (with text wrapping as xgettext does)
comments = [('comment', '#. '), ('tcomment', '# ')]
for c in comments:
val = getattr(self, c[0])
if val:
for comment in val.split('\n'):
if wrapwidth > 0 and len(comment) + len(c[1]) > wrapwidth:
ret += wrap(
comment,
wrapwidth,
initial_indent=c[1],
subsequent_indent=c[1],
break_long_words=False
)
else:
ret.append('%s%s' % (c[1], comment))
# 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:
# 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 "*"
ret += [l.replace('*', '-') for l in wrap(
filestr.replace('-', '*'),
wrapwidth,
initial_indent='#: ',
subsequent_indent='#: ',
break_long_words=False
)]
else:
ret.append('#: ' + filestr)
# flags (TODO: wrapping ?)
if self.flags:
ret.append('#, %s' % ', '.join(self.flags))
# previous context and previous msgid/msgid_plural
fields = ['previous_msgctxt', 'previous_msgid',
'previous_msgid_plural']
for f in fields:
val = getattr(self, f)
if val:
ret += self._str_field(f, "#| ", "", val, wrapwidth)
ret.append(_BaseEntry.__unicode__(self, wrapwidth))
ret = u('\n').join(ret)
assert isinstance(ret, text_type)
#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.
"""
# First: Obsolete test
if self.obsolete != other.obsolete:
if self.obsolete:
return -1
else:
return 1
# Work on a copy to protect original
occ1 = sorted(self.occurrences[:])
occ2 = sorted(other.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
# Compare msgid_plural if set
if self.msgid_plural:
if not other.msgid_plural:
return 1
for pos in self.msgid_plural:
if pos not in other.msgid_plural:
return 1
if self.msgid_plural[pos] > other.msgid_plural[pos]:
return 1
if self.msgid_plural[pos] < other.msgid_plural[pos]:
return -1
# Finally: Compare message ID
if self.msgid > other.msgid:
return 1
elif self.msgid < other.msgid:
return -1
return 0
def __gt__(self, other):
return self.__cmp__(other) > 0
def __lt__(self, other):
return self.__cmp__(other) < 0
def __ge__(self, other):
return self.__cmp__(other) >= 0
def __le__(self, other):
return self.__cmp__(other) <= 0
def __eq__(self, other):
return self.__cmp__(other) == 0
def __ne__(self, other):
return self.__cmp__(other) != 0
def translated(self):
"""
Returns ``True`` if the entry has been translated or ``False``
otherwise.
"""
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
fuzzy = 'fuzzy' in self.flags
self.flags = other.flags[:] # clone flags
if fuzzy:
self.flags.append('fuzzy')
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] = ''
def __hash__(self):
return hash((self.msgid, self.msgstr))
# }}}
# class MOEntry {{{
class MOEntry(_BaseEntry):
"""
Represents a mo file entry.
"""
def __init__(self, *args, **kwargs):
"""
Constructor, accepts the following keyword arguments,
for consistency with :class:`~polib.POEntry`:
``comment``
``tcomment``
``occurrences``
``flags``
``previous_msgctxt``
``previous_msgid``
``previous_msgid_plural``
Note: even though these keyword arguments are accepted,
they hold no real meaning in the context of MO files
and are simply ignored.
"""
_BaseEntry.__init__(self, *args, **kwargs)
self.comment = ''
self.tcomment = ''
self.occurrences = []
self.flags = []
self.previous_msgctxt = None
self.previous_msgid = None
self.previous_msgid_plural = None
def __hash__(self):
return hash((self.msgid, self.msgstr))
# }}}
# class _POFileParser {{{
class _POFileParser(object):
"""
A finite state machine to parse efficiently and correctly po
file format.
"""
def __init__(self, pofile, *args, **kwargs):
"""
Constructor.
Keyword arguments:
``pofile``
string, path to the po file or its content
``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 (optional, default: ``False``).
"""
enc = kwargs.get('encoding', default_encoding)
if _is_file(pofile):
try:
self.fhandle = io.open(pofile, 'rt', encoding=enc)
except LookupError:
enc = default_encoding
self.fhandle = io.open(pofile, 'rt', encoding=enc)
else:
self.fhandle = pofile.splitlines()
klass = kwargs.get('klass')
if klass is None:
klass = POFile
self.instance = klass(
pofile=pofile,
encoding=enc,
check_for_duplicates=kwargs.get('check_for_duplicates', False)
)
self.transitions = {}
self.current_line = 0
self.current_entry = POEntry(linenum=self.current_line)
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 occurrence
# * 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.
"""
keywords = {
'msgctxt': 'ct',
'msgid': 'mi',
'msgstr': 'ms',
'msgid_plural': 'mp',
}
prev_keywords = {
'msgid_plural': 'pp',
'msgid': 'pm',
'msgctxt': 'pc',
}
tokens = []
for line in self.fhandle:
self.current_line += 1
line = line.strip()
if line == '':
continue
tokens = line.split(None, 2)
nb_tokens = len(tokens)
if tokens[0] == '#~|':
continue
if tokens[0] == '#~' and nb_tokens > 1:
line = line[3:].strip()
tokens = tokens[1:]
nb_tokens -= 1
self.entry_obsolete = 1
else:
self.entry_obsolete = 0
# Take care of keywords like
# msgid, msgid_plural, msgctxt & msgstr.
if tokens[0] in keywords and nb_tokens > 1:
line = line[len(tokens[0]):].lstrip()
if re.search(r'([^\\]|^)"', line[1:-1]):
raise IOError('Syntax error in po file %s (line %s): '
'unescaped double quote found' %
(self.instance.fpath, self.current_line))
self.current_token = line
self.process(keywords[tokens[0]])
continue
self.current_token = line
if tokens[0] == '#:':
if nb_tokens <= 1:
continue
# we are on a occurrences line
self.process('oc')
elif line[:1] == '"':
# we are on a continuation line
if re.search(r'([^\\]|^)"', line[1:-1]):
raise IOError('Syntax error in po file %s (line %s): '
'unescaped double quote found' %
(self.instance.fpath, self.current_line))
self.process('mc')
elif line[:7] == 'msgstr[':
# we are on a msgstr plural
self.process('mx')
elif tokens[0] == '#,':
if nb_tokens <= 1:
continue
# we are on a flags line
self.process('fl')
elif tokens[0] == '#' or tokens[0].startswith('##'):
if line == '#':
line += ' '
# we are on a translator comment line
self.process('tc')
elif tokens[0] == '#.':
if nb_tokens <= 1:
continue
# we are on a generated comment line
self.process('gc')
elif tokens[0] == '#|':
if nb_tokens <= 1:
raise IOError('Syntax error in po file %s (line %s)' %
(self.instance.fpath, self.current_line))
# Remove the marker and any whitespace right after that.
line = line[2:].lstrip()
self.current_token = line
if tokens[1].startswith('"'):
# Continuation of previous metadata.
self.process('mc')
continue
if nb_tokens == 2:
# Invalid continuation line.
raise IOError('Syntax error in po file %s (line %s): '
'invalid continuation line' %
(self.instance.fpath, self.current_line))
# we are on a "previous translation" comment line,
if tokens[1] not in prev_keywords:
# Unknown keyword in previous translation comment.
raise IOError('Syntax error in po file %s (line %s): '
'unknown keyword %s' %
(self.instance.fpath, self.current_line,
tokens[1]))
# Remove the keyword and any whitespace
# between it and the starting quote.
line = line[len(tokens[1]):].lstrip()
self.current_token = line
self.process(prev_keywords[tokens[1]])
else:
raise IOError('Syntax error in po file %s (line %s)' %
(self.instance.fpath, self.current_line))
if self.current_entry and len(tokens) > 0 and \
not tokens[0].startswith('#'):
# since entries are added when another entry is found, we must add
# the last entry here (only if there are lines). Trailing comments
# are ignored
self.instance.append(self.current_entry)
# before returning the instance, check if there's metadata and if
# so extract it in a dict
metadataentry = self.instance.find('')
if metadataentry: # metadata found
# remove the entry
self.instance.remove(metadataentry)
self.instance.metadata_is_fuzzy = metadataentry.flags
key = None
for msg in metadataentry.msgstr.splitlines():
try:
key, val = msg.split(':', 1)
self.instance.metadata[key] = val.strip()
except (ValueError, KeyError):
if key is not None:
self.instance.metadata[key] += '\n' + msg.strip()
# close opened file
if not isinstance(self.fhandle, list): # must be 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)
self.transitions[(symbol, state)] = (action, next_state)
def process(self, symbol):
"""
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:
raise IOError('Syntax error in po file (line %s)' %
self.current_line)
# 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(linenum=self.current_line)
if self.current_entry.tcomment != '':
self.current_entry.tcomment += '\n'
tcomment = self.current_token.lstrip('#')
if tcomment.startswith(' '):
tcomment = tcomment[1:]
self.current_entry.tcomment += tcomment
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(linenum=self.current_line)
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 occurrence."""
if self.current_state in ['mc', 'ms', 'mx']:
self.instance.append(self.current_entry)
self.current_entry = POEntry(linenum=self.current_line)
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 (ValueError, AttributeError):
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(linenum=self.current_line)
self.current_entry.flags += [c.strip() for c in
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(linenum=self.current_line)
self.current_entry.previous_msgid_plural = \
unescape(self.current_token[1:-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(linenum=self.current_line)
self.current_entry.previous_msgid = \
unescape(self.current_token[1:-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(linenum=self.current_line)
self.current_entry.previous_msgctxt = \
unescape(self.current_token[1:-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(linenum=self.current_line)
self.current_entry.msgctxt = unescape(self.current_token[1:-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(linenum=self.current_line)
self.current_entry.obsolete = self.entry_obsolete
self.current_entry.msgid = unescape(self.current_token[1:-1])
return True
def handle_mp(self):
"""Handle a msgid plural."""
self.current_entry.msgid_plural = unescape(self.current_token[1:-1])
return True
def handle_ms(self):
"""Handle a msgstr."""
self.current_entry.msgstr = unescape(self.current_token[1:-1])
return True
def handle_mx(self):
"""Handle a msgstr plural."""
index = self.current_token[7]
value = self.current_token[self.current_token.find('"') + 1:-1]
self.current_entry.msgstr_plural[int(index)] = unescape(value)
self.msgstr_index = int(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':
self.current_entry.msgctxt += token
elif self.current_state == 'mi':
self.current_entry.msgid += token
elif self.current_state == 'mp':
self.current_entry.msgid_plural += token
elif self.current_state == 'ms':
self.current_entry.msgstr += token
elif self.current_state == 'mx':
self.current_entry.msgstr_plural[self.msgstr_index] += token
elif self.current_state == 'pp':
self.current_entry.previous_msgid_plural += token
elif self.current_state == 'pm':
self.current_entry.previous_msgid += token
elif self.current_state == 'pc':
self.current_entry.previous_msgctxt += token
# don't change the current state
return False
# }}}
# class _MOFileParser {{{
class _MOFileParser(object):
"""
A class to parse binary mo files.
"""
def __init__(self, mofile, *args, **kwargs):
"""
Constructor.
Keyword arguments:
``mofile``
string, path to the mo file or its content
``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 (optional, default: ``False``).
"""
self.fhandle = open(mofile, 'rb')
klass = kwargs.get('klass')
if klass is None:
klass = MOFile
self.instance = klass(
fpath=mofile,
encoding=kwargs.get('encoding', default_encoding),
check_for_duplicates=kwargs.get('check_for_duplicates', False)
)
def __del__(self):
"""
Make sure the file is closed, this prevents warnings on unclosed file
when running tests with python >= 3.2.
"""
if self.fhandle:
self.fhandle.close()
def parse(self):
"""
Build the instance with the file handle provided in the
constructor.
"""
# parse magic number
magic_number = self._readbinary('<I', 4)
if magic_number == MOFile.MAGIC:
ii = '<II'
elif magic_number == MOFile.MAGIC_SWAPPED:
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
version, numofstrings = self._readbinary(ii, 8)
# from MO file format specs: "A program seeing an unexpected major
# revision number should stop reading the MO file entirely"
if version not in (0, 1):
raise IOError('Invalid mo file, unexpected major revision number')
self.instance.version = version
# 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
encoding = self.instance.encoding
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 and not msgid: # metadata
raw_metadata, metadata = msgstr.split(b('\n')), {}
for line in raw_metadata:
tokens = line.split(b(':'), 1)
if tokens[0] != b(''):
try:
k = tokens[0].decode(encoding)
v = tokens[1].decode(encoding)
metadata[k] = v.strip()
except IndexError:
metadata[k] = u('')
self.instance.metadata = metadata
continue
# test if we have a plural entry
msgid_tokens = msgid.split(b('\0'))
if len(msgid_tokens) > 1:
entry = self._build_entry(
msgid=msgid_tokens[0],
msgid_plural=msgid_tokens[1],
msgstr_plural=dict((k, v) for k, v in
enumerate(msgstr.split(b('\0'))))
)
else:
entry = self._build_entry(msgid=msgid, msgstr=msgstr)
self.instance.append(entry)
# close opened file
self.fhandle.close()
return self.instance
def _build_entry(self, msgid, msgstr=None, msgid_plural=None,
msgstr_plural=None):
msgctxt_msgid = msgid.split(b('\x04'))
encoding = self.instance.encoding
if len(msgctxt_msgid) > 1:
kwargs = {
'msgctxt': msgctxt_msgid[0].decode(encoding),
'msgid': msgctxt_msgid[1].decode(encoding),
}
else:
kwargs = {'msgid': msgid.decode(encoding)}
if msgstr:
kwargs['msgstr'] = msgstr.decode(encoding)
if msgid_plural:
kwargs['msgid_plural'] = msgid_plural.decode(encoding)
if msgstr_plural:
for k in msgstr_plural:
msgstr_plural[k] = msgstr_plural[k].decode(encoding)
kwargs['msgstr_plural'] = msgstr_plural
return MOEntry(**kwargs)
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
# }}}
# class TextWrapper {{{
class TextWrapper(textwrap.TextWrapper):
"""
Subclass of textwrap.TextWrapper that backport the
drop_whitespace option.
"""
def __init__(self, *args, **kwargs):
drop_whitespace = kwargs.pop('drop_whitespace', True)
textwrap.TextWrapper.__init__(self, *args, **kwargs)
self.drop_whitespace = drop_whitespace
def _wrap_chunks(self, chunks):
"""_wrap_chunks(chunks : [string]) -> [string]
Wrap a sequence of text chunks and return a list of lines of
length 'self.width' or less. (If 'break_long_words' is false,
some lines may be longer than this.) Chunks correspond roughly
to words and the whitespace between them: each chunk is
indivisible (modulo 'break_long_words'), but a line break can
come between any two chunks. Chunks should not have internal
whitespace; ie. a chunk is either all whitespace or a "word".
Whitespace chunks will be removed from the beginning and end of
lines, but apart from that whitespace is preserved.
"""
lines = []
if self.width <= 0:
raise ValueError("invalid width %r (must be > 0)" % self.width)
# Arrange in reverse order so items can be efficiently popped
# from a stack of chucks.
chunks.reverse()
while chunks:
# Start the list of chunks that will make up the current line.
# cur_len is just the length of all the chunks in cur_line.
cur_line = []
cur_len = 0
# Figure out which static string will prefix this line.
if lines:
indent = self.subsequent_indent
else:
indent = self.initial_indent
# Maximum width for this line.
width = self.width - len(indent)
# First chunk on line is whitespace -- drop it, unless this
# is the very beginning of the text (ie. no lines started yet).
if self.drop_whitespace and chunks[-1].strip() == '' and lines:
del chunks[-1]
while chunks:
l = len(chunks[-1])
# Can at least squeeze this chunk onto the current line.
if cur_len + l <= width:
cur_line.append(chunks.pop())
cur_len += l
# Nope, this line is full.
else:
break
# The current line is full, and the next chunk is too big to
# fit on *any* line (not just this one).
if chunks and len(chunks[-1]) > width:
self._handle_long_word(chunks, cur_line, cur_len, width)
# If the last chunk on this line is all whitespace, drop it.
if self.drop_whitespace and cur_line and not cur_line[-1].strip():
del cur_line[-1]
# Convert current line back to a string and store it in list
# of all lines (return value).
if cur_line:
lines.append(indent + ''.join(cur_line))
return lines
# }}}
# function wrap() {{{
def wrap(text, width=70, **kwargs):
"""
Wrap a single paragraph of text, returning a list of wrapped lines.
"""
if sys.version_info < (2, 6):
return TextWrapper(width=width, **kwargs).wrap(text)
return textwrap.wrap(text, width=width, **kwargs)
# }}}
|