annotate babel/messages/pofile.py @ 105:c62b68a0b65e trunk

`Message`, `read_po` and `write_po` now all handle user/auto comments correctly. The `Generated-By` header value needed a missing `\n`. The frontends now pass the value of `--copyright-holder` to the Catalog, and removed the `copyright_holder` arg for `write_po` left behind on [105]. Tests changed accordingly.
author palgarvio
date Thu, 14 Jun 2007 06:24:28 +0000
parents 395704fda00b
children 2cd83f77cc98
rev   line source
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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2007 Edgewall Software
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4 # All rights reserved.
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5 #
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6 # This software is licensed as described in the file COPYING, which
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7 # you should have received as part of this distribution. The terms
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8 # are also available at http://babel.edgewall.org/wiki/License.
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9 #
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10 # This software consists of voluntary contributions made by many
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11 # individuals. For the exact contribution history, see the revision
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12 # history and logs, available at http://babel.edgewall.org/log/.
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13
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14 """Reading and writing of files in the ``gettext`` PO (portable object)
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15 format.
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16
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17 :see: `The Format of PO Files
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18 <http://www.gnu.org/software/gettext/manual/gettext.html#PO-Files>`_
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19 """
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20
5
132526dcd074 * The creation-date header in generated PO files now includes the timezone offset.
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21 from datetime import date, datetime
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22 import re
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23 try:
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24 set
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25 except NameError:
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26 from sets import Set as set
103
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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27 from textwrap import wrap
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28
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29 from babel import __version__ as VERSION
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f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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30 from babel.messages.catalog import Catalog
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31 from babel.util import LOCALTZ
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32
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33 __all__ = ['escape', 'normalize', 'read_po', 'write_po']
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34
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35 def read_po(fileobj):
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36 """Read messages from a ``gettext`` PO (portable object) file from the given
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37 file-like object and return a `Catalog`.
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38
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39 >>> from StringIO import StringIO
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40 >>> buf = StringIO('''# Translations template for PROJECT.
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41 ... # Copyright (C) YEAR COPYRIGHT HOLDER
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42 ... # This file is distributed under the same license as the PROJECT project.
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43 ... # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
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44 ... #
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45 ...
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46 ... #: main.py:1
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47 ... #, fuzzy, python-format
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48 ... msgid "foo %(name)s"
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49 ... msgstr ""
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cd9aa202568e Change pot header's first line, "Translations Template for %%(project)s." instead of "SOME DESCRIPTIVE TITLE.". '''`project`''' and '''`version`''' now default to '''PROJECT''' and '''VERSION''' respectively. Fixed a bug regarding '''Content-Transfer-Encoding''', it shouldn't be the charset, and we're defaulting to `8bit` untill someone complains.
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50 ...
94
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51 ... # A user comment
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52 ... #. An auto comment
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53 ... #: main.py:3
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54 ... msgid "bar"
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55 ... msgid_plural "baz"
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56 ... msgstr[0] ""
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57 ... msgstr[1] ""
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58 ... ''')
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59 >>> catalog = read_po(buf)
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60 >>> catalog.revision_date = datetime(2007, 04, 01)
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61
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62 >>> print catalog.header_comment
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63 # Translations template for PROJECT.
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64 # Copyright (C) 2007 ORGANIZATION
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65 # This file is distributed under the same license as the PROJECT project.
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66 # FIRST AUTHOR <EMAIL@ADDRESS>, 2007.
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67
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68 >>> for message in catalog:
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69 ... if message.id:
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70 ... print (message.id, message.string)
105
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71 ... print ' ', (message.locations, message.flags)
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72 ... print ' ', (message.user_comments, message.auto_comments)
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73 ('foo %(name)s', '')
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74 ([('main.py', 1)], set(['fuzzy', 'python-format']))
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75 ([], [])
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76 (('bar', 'baz'), ('', ''))
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77 ([('main.py', 3)], set([]))
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78 (['An auto comment'], ['A user comment'])
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80 :param fileobj: the file-like object to read the PO file from
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81 :return: an iterator over ``(message, translation, location)`` tuples
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82 :rtype: ``iterator``
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83 """
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84 catalog = Catalog()
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85
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86 messages = []
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87 translations = []
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88 locations = []
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89 flags = []
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90 user_comments = []
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91 auto_comments = []
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92 in_msgid = in_msgstr = False
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93 in_header = True
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94 header_lines = []
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95
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96 def _add_message():
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97 translations.sort()
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98 if len(messages) > 1:
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99 msgid = tuple(messages)
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100 else:
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101 msgid = messages[0]
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102 if len(translations) > 1:
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103 string = tuple([t[1] for t in translations])
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104 else:
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105 string = translations[0][1]
105
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106 catalog.add(msgid, string, list(locations), set(flags),
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107 list(user_comments), list(auto_comments))
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3ae316b58231 Some cosmetic changes for the new translator comments support.
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108 del messages[:]; del translations[:]; del locations[:];
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109 del flags[:]; del auto_comments[:]; del user_comments[:]
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110
1
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111 for line in fileobj.readlines():
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112 line = line.strip()
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113 if line.startswith('#'):
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114 if in_header and line[1:].startswith(' '):
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115 header_lines.append(line)
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116 else:
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117 in_header = in_msgid = in_msgstr = False
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118 if messages:
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119 _add_message()
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120 if line[1:].startswith(':'):
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121 for location in line[2:].lstrip().split():
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122 filename, lineno = location.split(':', 1)
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123 locations.append((filename, int(lineno)))
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124 elif line[1:].startswith(','):
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125 for flag in line[2:].lstrip().split(','):
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126 flags.append(flag.strip())
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127 elif line[1:].startswith('.'):
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128 # These are called auto-comments
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129 comment = line[2:].strip()
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130 if comment:
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131 # Just check that we're not adding empty comments
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132 auto_comments.append(comment)
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133 elif line[1:].startswith(' '):
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134 # These are called user comments
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diff changeset
135 comment = line[1:].strip()
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parents: 103
diff changeset
136 if comment:
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diff changeset
137 # Just check that we're not adding empty comments
105
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
138 user_comments.append(comment)
104
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diff changeset
139 else:
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140 in_header = False
1
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141 if line.startswith('msgid_plural'):
6
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142 in_msgid = True
1
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143 msg = line[12:].lstrip()
6
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144 messages.append(msg[1:-1])
1
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145 elif line.startswith('msgid'):
6
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146 in_msgid = True
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147 if messages:
64
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148 _add_message()
1
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149 msg = line[5:].lstrip()
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150 messages.append(msg[1:-1])
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151 elif line.startswith('msgstr'):
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152 in_msgid = False
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153 in_msgstr = True
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154 msg = line[6:].lstrip()
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155 if msg.startswith('['):
6
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156 idx, msg = msg[1:].split(']')
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157 translations.append([int(idx), msg.lstrip()[1:-1]])
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158 else:
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159 translations.append([0, msg[1:-1]])
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160 elif line.startswith('"'):
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161 if in_msgid:
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162 messages[-1] += line.rstrip()[1:-1]
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163 elif in_msgstr:
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164 translations[-1][1] += line.rstrip()[1:-1]
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165
104
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diff changeset
166 catalog.header_comment = '\n'.join(header_lines)
6
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167 if messages:
64
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168 _add_message()
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169 return catalog
1
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170
24
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171 WORD_SEP = re.compile('('
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172 r'\s+|' # any whitespace
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173 r'[^\s\w]*\w+[a-zA-Z]-(?=\w+[a-zA-Z])|' # hyphenated words
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174 r'(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w)' # em-dash
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175 ')')
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176
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177 def escape(string):
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178 r"""Escape the given string so that it can be included in double-quoted
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diff changeset
179 strings in ``PO`` files.
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180
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181 >>> escape('''Say:
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182 ... "hello, world!"
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183 ... ''')
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184 '"Say:\\n \\"hello, world!\\"\\n"'
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185
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186 :param string: the string to escape
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187 :return: the escaped string
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188 :rtype: `str` or `unicode`
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189 """
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190 return '"%s"' % string.replace('\\', '\\\\') \
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191 .replace('\t', '\\t') \
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192 .replace('\r', '\\r') \
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193 .replace('\n', '\\n') \
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194 .replace('\"', '\\"')
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195
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196 def normalize(string, width=76):
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197 r"""This converts a string into a format that is appropriate for .po files.
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198
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199 >>> print normalize('''Say:
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200 ... "hello, world!"
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201 ... ''', width=None)
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202 ""
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203 "Say:\n"
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204 " \"hello, world!\"\n"
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205
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206 >>> print normalize('''Say:
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207 ... "Lorem ipsum dolor sit amet, consectetur adipisicing elit, "
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208 ... ''', width=32)
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209 ""
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210 "Say:\n"
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211 " \"Lorem ipsum dolor sit "
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212 "amet, consectetur adipisicing"
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213 " elit, \"\n"
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214
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215 :param string: the string to normalize
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216 :param width: the maximum line width; use `None`, 0, or a negative number
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217 to completely disable line wrapping
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218 :return: the normalized string
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219 :rtype: `unicode`
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220 """
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221 if width and width > 0:
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222 lines = []
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223 for idx, line in enumerate(string.splitlines(True)):
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224 if len(escape(line)) > width:
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225 chunks = WORD_SEP.split(line)
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226 chunks.reverse()
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diff changeset
227 while chunks:
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228 buf = []
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229 size = 2
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230 while chunks:
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231 l = len(escape(chunks[-1])) - 2
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232 if size + l < width:
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233 buf.append(chunks.pop())
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234 size += l
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235 else:
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236 if not buf:
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237 # handle long chunks by putting them on a
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238 # separate line
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diff changeset
239 buf.append(chunks.pop())
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240 break
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241 lines.append(u''.join(buf))
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242 else:
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243 lines.append(line)
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244 else:
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245 lines = string.splitlines(True)
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246
67
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247 if len(lines) <= 1:
24
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248 return escape(string)
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249
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250 # Remove empty trailing line
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251 if lines and not lines[-1]:
24
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252 del lines[-1]
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253 lines[-1] += '\n'
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254 return u'""\n' + u'\n'.join([escape(l) for l in lines])
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255
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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256 def write_po(fileobj, catalog, width=76, no_location=False, omit_header=False,
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257 sort_output=False, sort_by_file=False):
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258 r"""Write a ``gettext`` PO (portable object) template file for a given
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259 message catalog to the provided file-like object.
1
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260
56
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261 >>> catalog = Catalog()
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262 >>> catalog.add(u'foo %(name)s', locations=[('main.py', 1)],
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263 ... flags=('fuzzy',))
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264 >>> catalog.add((u'bar', u'baz'), locations=[('main.py', 3)])
1
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265 >>> from StringIO import StringIO
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266 >>> buf = StringIO()
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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267 >>> write_po(buf, catalog, omit_header=True)
1
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268 >>> print buf.getvalue()
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269 #: main.py:1
6
c3b1b0b3d129 Add basic PO file parsing, and change the PO writing procedure to also take flags (such as "python-format" or "fuzzy").
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270 #, fuzzy, python-format
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271 msgid "foo %(name)s"
1
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272 msgstr ""
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273 <BLANKLINE>
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274 #: main.py:3
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275 msgid "bar"
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276 msgid_plural "baz"
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277 msgstr[0] ""
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278 msgstr[1] ""
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279 <BLANKLINE>
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280 <BLANKLINE>
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281
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282 :param fileobj: the file-like object to write to
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283 :param catalog: the `Catalog` instance
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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284 :param width: the maximum line width for the generated output; use `None`,
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285 0, or a negative number to completely disable line wrapping
1
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286 :param no_location: do not emit a location comment for every message
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287 :param omit_header: do not include the ``msgid ""`` entry at the top of the
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288 output
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289 """
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290 def _normalize(key):
102
14a3d766a701 Project name and version, and the charset are available via the `Catalog` object, and do not need to be passed to `write_pot()`.
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291 return normalize(key, width=width).encode(catalog.charset,
14a3d766a701 Project name and version, and the charset are available via the `Catalog` object, and do not need to be passed to `write_pot()`.
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292 'backslashreplace')
24
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parents: 23
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293
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294 def _write(text):
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diff changeset
295 if isinstance(text, unicode):
102
14a3d766a701 Project name and version, and the charset are available via the `Catalog` object, and do not need to be passed to `write_pot()`.
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296 text = text.encode(catalog.charset)
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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diff changeset
297 fileobj.write(text)
1
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298
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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diff changeset
299 messages = list(catalog)
71
27f01e7626ea Implemented message sorting, see #7.
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diff changeset
300 if sort_output:
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diff changeset
301 messages.sort(lambda x,y: cmp(x.id, y.id))
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diff changeset
302 elif sort_by_file:
27f01e7626ea Implemented message sorting, see #7.
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diff changeset
303 messages.sort(lambda x,y: cmp(x.locations, y.locations))
68
269941aa0e55 Add back POT header broken in previous check-in.
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304
71
27f01e7626ea Implemented message sorting, see #7.
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diff changeset
305 for message in messages:
67
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diff changeset
306 if not message.id: # This is the header "message"
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diff changeset
307 if omit_header:
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diff changeset
308 continue
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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diff changeset
309 comment_header = catalog.header_comment
103
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
310 if width and width > 0:
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
311 lines = []
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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312 for line in comment_header.splitlines():
103
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
313 lines += wrap(line, width=width, subsequent_indent='# ',
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
314 break_long_words=False)
104
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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315 comment_header = u'\n'.join(lines) + u'\n'
395704fda00b Merged `write_pot` and `write_po` functions by moving more functionality to the `Catalog` class. This is certainly not perfect yet, but moves us in the right direction.
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316 _write(comment_header)
102
14a3d766a701 Project name and version, and the charset are available via the `Catalog` object, and do not need to be passed to `write_pot()`.
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317
105
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
318 if message.user_comments:
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
319 for comment in message.user_comments:
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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320 for line in wrap(comment, width, break_long_words=False):
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
321 _write('# %s\n' % line.strip())
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diff changeset
322
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
323 if message.auto_comments:
c62b68a0b65e `Message`, `read_po` and `write_po` now all handle user/auto comments correctly.
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diff changeset
324 for comment in message.auto_comments:
103
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
325 for line in wrap(comment, width, break_long_words=False):
80
116e34b8cefa Added support for translator comments at the API and frontends levels.(See #12, item 1). Updated docs and tests accordingly.
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diff changeset
326 _write('#. %s\n' % line.strip())
1
7870274479f5 Import of initial code base.
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327
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328 if not no_location:
56
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
329 locs = u' '.join([u'%s:%d' % item for item in message.locations])
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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parents: 23
diff changeset
330 if width and width > 0:
103
dacfbaf0d1e0 Implement wrapping of header comments in PO(T) output. Related to #14.
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diff changeset
331 locs = wrap(locs, width, break_long_words=False)
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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parents: 23
diff changeset
332 for line in locs:
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diff changeset
333 _write('#: %s\n' % line.strip())
56
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
334 if message.flags:
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diff changeset
335 _write('#%s\n' % ', '.join([''] + list(message.flags)))
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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diff changeset
336
56
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
337 if isinstance(message.id, (list, tuple)):
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
338 _write('msgid %s\n' % _normalize(message.id[0]))
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
339 _write('msgid_plural %s\n' % _normalize(message.id[1]))
68
269941aa0e55 Add back POT header broken in previous check-in.
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parents: 67
diff changeset
340 for i, string in enumerate(message.string):
269941aa0e55 Add back POT header broken in previous check-in.
cmlenz
parents: 67
diff changeset
341 _write('msgstr[%d] %s\n' % (i, _normalize(message.string[i])))
1
7870274479f5 Import of initial code base.
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diff changeset
342 else:
56
f40fc143439c Add actual data structures for handling message catalogs, so that more code can be reused here between the frontends.
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diff changeset
343 _write('msgid %s\n' % _normalize(message.id))
68
269941aa0e55 Add back POT header broken in previous check-in.
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diff changeset
344 _write('msgstr %s\n' % _normalize(message.string or ''))
24
b09e90803d1b Reimplement line wrapping for PO writing (as the `textwrap` module is too destructive with white space) and move it to the `normalize` function (which was already doing some handling of line breaks).
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parents: 23
diff changeset
345 _write('\n')
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