1 | """Internationalization and localization support. |
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2 | |
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3 | This module provides internationalization (I18N) and localization (L10N) |
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4 | support for your Python programs by providing an interface to the GNU gettext |
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5 | message catalog library. |
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6 | |
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7 | I18N refers to the operation by which a program is made aware of multiple |
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8 | languages. L10N refers to the adaptation of your program, once |
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9 | internationalized, to the local language and cultural habits. |
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10 | |
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11 | """ |
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12 | |
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13 | # This module represents the integration of work, contributions, feedback, and |
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14 | # suggestions from the following people: |
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15 | # |
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16 | # Martin von Loewis, who wrote the initial implementation of the underlying |
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17 | # C-based libintlmodule (later renamed _gettext), along with a skeletal |
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18 | # gettext.py implementation. |
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19 | # |
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20 | # Peter Funk, who wrote fintl.py, a fairly complete wrapper around intlmodule, |
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21 | # which also included a pure-Python implementation to read .mo files if |
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22 | # intlmodule wasn't available. |
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23 | # |
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24 | # James Henstridge, who also wrote a gettext.py module, which has some |
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25 | # interesting, but currently unsupported experimental features: the notion of |
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26 | # a Catalog class and instances, and the ability to add to a catalog file via |
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27 | # a Python API. |
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28 | # |
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29 | # Barry Warsaw integrated these modules, wrote the .install() API and code, |
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30 | # and conformed all C and Python code to Python's coding standards. |
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31 | # |
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32 | # Francois Pinard and Marc-Andre Lemburg also contributed valuably to this |
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33 | # module. |
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34 | # |
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35 | # J. David Ibanez implemented plural forms. Bruno Haible fixed some bugs. |
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36 | # |
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37 | # TODO: |
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38 | # - Lazy loading of .mo files. Currently the entire catalog is loaded into |
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39 | # memory, but that's probably bad for large translated programs. Instead, |
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40 | # the lexical sort of original strings in GNU .mo files should be exploited |
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41 | # to do binary searches and lazy initializations. Or you might want to use |
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42 | # the undocumented double-hash algorithm for .mo files with hash tables, but |
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43 | # you'll need to study the GNU gettext code to do this. |
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44 | # |
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45 | # - Support Solaris .mo file formats. Unfortunately, we've been unable to |
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46 | # find this format documented anywhere. |
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47 | |
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48 | |
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49 | import locale, copy, os, re, struct, sys |
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50 | from errno import ENOENT |
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51 | |
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52 | |
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53 | __all__ = ['NullTranslations', 'GNUTranslations', 'Catalog', |
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54 | 'find', 'translation', 'install', 'textdomain', 'bindtextdomain', |
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55 | 'bind_textdomain_codeset', |
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56 | 'dgettext', 'dngettext', 'gettext', 'lgettext', 'ldgettext', |
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57 | 'ldngettext', 'lngettext', 'ngettext', |
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58 | 'pgettext', 'lpgettext', 'npgettext', 'lnpgettext', 'ldnpgettext', |
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59 | ] |
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60 | |
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61 | _default_localedir = os.path.join(sys.prefix, 'share', 'locale') |
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62 | |
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63 | |
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64 | def test(condition, true, false): |
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65 | """ |
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66 | Implements the C expression: |
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67 | |
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68 | condition ? true : false |
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69 | |
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70 | Required to correctly interpret plural forms. |
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71 | """ |
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72 | if condition: |
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73 | return true |
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74 | else: |
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75 | return false |
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76 | |
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77 | |
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78 | def c2py(plural): |
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79 | """Gets a C expression as used in PO files for plural forms and returns a |
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80 | Python lambda function that implements an equivalent expression. |
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81 | """ |
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82 | # Security check, allow only the "n" identifier |
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83 | try: |
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84 | from cStringIO import StringIO |
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85 | except ImportError: |
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86 | from StringIO import StringIO |
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87 | import token, tokenize |
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88 | tokens = tokenize.generate_tokens(StringIO(plural).readline) |
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89 | try: |
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90 | danger = [x for x in tokens if x[0] == token.NAME and x[1] != 'n'] |
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91 | except tokenize.TokenError: |
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92 | raise ValueError, \ |
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93 | 'plural forms expression error, maybe unbalanced parenthesis' |
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94 | else: |
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95 | if danger: |
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96 | raise ValueError, 'plural forms expression could be dangerous' |
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97 | |
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98 | # Replace some C operators by their Python equivalents |
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99 | plural = plural.replace('&&', ' and ') |
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100 | plural = plural.replace('||', ' or ') |
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101 | |
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102 | expr = re.compile(r'\!([^=])') |
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103 | plural = expr.sub(' not \\1', plural) |
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104 | |
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105 | # Regular expression and replacement function used to transform |
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106 | # "a?b:c" to "test(a,b,c)". |
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107 | expr = re.compile(r'(.*?)\?(.*?):(.*)') |
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108 | def repl(x): |
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109 | return "test(%s, %s, %s)" % (x.group(1), x.group(2), |
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110 | expr.sub(repl, x.group(3))) |
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111 | |
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112 | # Code to transform the plural expression, taking care of parentheses |
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113 | stack = [''] |
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114 | for c in plural: |
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115 | if c == '(': |
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116 | stack.append('') |
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117 | elif c == ')': |
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118 | if len(stack) == 1: |
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119 | # Actually, we never reach this code, because unbalanced |
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120 | # parentheses get caught in the security check at the |
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121 | # beginning. |
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122 | raise ValueError, 'unbalanced parenthesis in plural form' |
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123 | s = expr.sub(repl, stack.pop()) |
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124 | stack[-1] += '(%s)' % s |
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125 | else: |
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126 | stack[-1] += c |
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127 | plural = expr.sub(repl, stack.pop()) |
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128 | |
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129 | return eval('lambda n: int(%s)' % plural) |
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130 | |
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131 | |
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132 | |
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133 | def _expand_lang(locale): |
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134 | from locale import normalize |
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135 | locale = normalize(locale) |
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136 | COMPONENT_CODESET = 1 << 0 |
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137 | COMPONENT_TERRITORY = 1 << 1 |
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138 | COMPONENT_MODIFIER = 1 << 2 |
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139 | # split up the locale into its base components |
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140 | mask = 0 |
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141 | pos = locale.find('@') |
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142 | if pos >= 0: |
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143 | modifier = locale[pos:] |
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144 | locale = locale[:pos] |
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145 | mask |= COMPONENT_MODIFIER |
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146 | else: |
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147 | modifier = '' |
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148 | pos = locale.find('.') |
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149 | if pos >= 0: |
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150 | codeset = locale[pos:] |
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151 | locale = locale[:pos] |
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152 | mask |= COMPONENT_CODESET |
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153 | else: |
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154 | codeset = '' |
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155 | pos = locale.find('_') |
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156 | if pos >= 0: |
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157 | territory = locale[pos:] |
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158 | locale = locale[:pos] |
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159 | mask |= COMPONENT_TERRITORY |
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160 | else: |
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161 | territory = '' |
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162 | language = locale |
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163 | ret = [] |
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164 | for i in range(mask+1): |
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165 | if not (i & ~mask): # if all components for this combo exist ... |
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166 | val = language |
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167 | if i & COMPONENT_TERRITORY: val += territory |
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168 | if i & COMPONENT_CODESET: val += codeset |
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169 | if i & COMPONENT_MODIFIER: val += modifier |
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170 | ret.append(val) |
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171 | ret.reverse() |
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172 | return ret |
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173 | |
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174 | |
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175 | |
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176 | class NullTranslations: |
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177 | def __init__(self, fp=None): |
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178 | self._info = {} |
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179 | self._charset = None |
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180 | self._output_charset = None |
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181 | self._fallback = None |
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182 | if fp is not None: |
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183 | self._parse(fp) |
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184 | |
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185 | def _parse(self, fp): |
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186 | pass |
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187 | |
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188 | def add_fallback(self, fallback): |
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189 | if self._fallback: |
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190 | self._fallback.add_fallback(fallback) |
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191 | else: |
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192 | self._fallback = fallback |
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193 | |
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194 | def gettext(self, message): |
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195 | if self._fallback: |
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196 | return self._fallback.gettext(message) |
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197 | return message |
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198 | |
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199 | def pgettext(self, context, message): |
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200 | if self._fallback: |
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201 | return self._fallback.pgettext(context, message) |
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202 | return message |
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203 | |
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204 | def lgettext(self, message): |
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205 | if self._fallback: |
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206 | return self._fallback.lgettext(message) |
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207 | return message |
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208 | |
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209 | def lpgettext(self, context, message): |
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210 | if self._fallback: |
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211 | return self._fallback.lpgettext(context, message) |
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212 | return message |
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213 | |
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214 | def ngettext(self, msgid1, msgid2, n): |
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215 | if self._fallback: |
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216 | return self._fallback.ngettext(msgid1, msgid2, n) |
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217 | if n == 1: |
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218 | return msgid1 |
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219 | else: |
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220 | return msgid2 |
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221 | |
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222 | def npgettext(self, context, msgid1, msgid2, n): |
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223 | if self._fallback: |
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224 | return self._fallback.npgettext(context, msgid1, msgid2, n) |
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225 | if n == 1: |
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226 | return msgid1 |
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227 | else: |
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228 | return msgid2 |
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229 | |
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230 | def lngettext(self, msgid1, msgid2, n): |
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231 | if self._fallback: |
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232 | return self._fallback.lngettext(msgid1, msgid2, n) |
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233 | if n == 1: |
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234 | return msgid1 |
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235 | else: |
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236 | return msgid2 |
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237 | |
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238 | def ugettext(self, message): |
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239 | if self._fallback: |
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240 | return self._fallback.ugettext(message) |
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241 | return unicode(message) |
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242 | |
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243 | def ungettext(self, msgid1, msgid2, n): |
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244 | if self._fallback: |
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245 | return self._fallback.ungettext(msgid1, msgid2, n) |
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246 | if n == 1: |
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247 | return unicode(msgid1) |
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248 | else: |
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249 | return unicode(msgid2) |
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250 | |
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251 | def lnpgettext(self, context, msgid1, msgid2, n): |
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252 | if self._fallback: |
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253 | return self._fallback.lnpgettext(context, msgid1, msgid2, n) |
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254 | if n == 1: |
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255 | return msgid1 |
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256 | else: |
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257 | return msgid2 |
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258 | |
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259 | def info(self): |
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260 | return self._info |
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261 | |
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262 | def charset(self): |
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263 | return self._charset |
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264 | |
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265 | def output_charset(self): |
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266 | return self._output_charset |
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267 | |
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268 | def set_output_charset(self, charset): |
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269 | self._output_charset = charset |
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270 | |
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271 | def install(self, unicode=False, names=None): |
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272 | import __builtin__ |
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273 | __builtin__.__dict__['_'] = unicode and self.ugettext or self.gettext |
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274 | if hasattr(names, "__contains__"): |
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275 | if "gettext" in names: |
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276 | __builtin__.__dict__['gettext'] = __builtin__.__dict__['_'] |
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277 | if "ngettext" in names: |
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278 | __builtin__.__dict__['ngettext'] = (unicode and self.ungettext |
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279 | or self.ngettext) |
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280 | if "lgettext" in names: |
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281 | __builtin__.__dict__['lgettext'] = self.lgettext |
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282 | if "lngettext" in names: |
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283 | __builtin__.__dict__['lngettext'] = self.lngettext |
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284 | if "pgettext" in names: |
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285 | __builtin__.__dict__['pgettext'] = self.pgettext |
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286 | if "npgettext" in names: |
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287 | __builtin__.__dict__['npgettext'] = self.npgettext |
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288 | if "lnpgettext" in names: |
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289 | __builtin__.__dict__['lnpgettext'] = self.lnpgettext |
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290 | |
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291 | class GNUTranslations(NullTranslations): |
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292 | # Magic number of .mo files |
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293 | LE_MAGIC = 0x950412deL |
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294 | BE_MAGIC = 0xde120495L |
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295 | |
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296 | # The encoding of a msgctxt and a msgid in a .mo file is |
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297 | # msgctxt + "\x04" + msgid (gettext version >= 0.15) |
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298 | CONTEXT = "%s\x04%s" |
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299 | |
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300 | def _parse(self, fp): |
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301 | """Override this method to support alternative .mo formats.""" |
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302 | unpack = struct.unpack |
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303 | filename = getattr(fp, 'name', '') |
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304 | # Parse the .mo file header, which consists of 5 little endian 32 |
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305 | # bit words. |
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306 | self._catalog = catalog = {} |
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307 | self.plural = lambda n: int(n != 1) # germanic plural by default |
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308 | buf = fp.read() |
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309 | buflen = len(buf) |
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310 | # Are we big endian or little endian? |
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311 | magic = unpack('<I', buf[:4])[0] |
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312 | if magic == self.LE_MAGIC: |
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313 | version, msgcount, masteridx, transidx = unpack('<4I', buf[4:20]) |
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314 | ii = '<II' |
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315 | elif magic == self.BE_MAGIC: |
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316 | version, msgcount, masteridx, transidx = unpack('>4I', buf[4:20]) |
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317 | ii = '>II' |
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318 | else: |
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319 | raise IOError(0, 'Bad magic number', filename) |
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320 | # Now put all messages from the .mo file buffer into the catalog |
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321 | # dictionary. |
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322 | for i in xrange(0, msgcount): |
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323 | mlen, moff = unpack(ii, buf[masteridx:masteridx+8]) |
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324 | mend = moff + mlen |
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325 | tlen, toff = unpack(ii, buf[transidx:transidx+8]) |
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326 | tend = toff + tlen |
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327 | if mend < buflen and tend < buflen: |
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328 | msg = buf[moff:mend] |
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329 | tmsg = buf[toff:tend] |
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330 | else: |
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331 | raise IOError(0, 'File is corrupt', filename) |
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332 | # See if we're looking at GNU .mo conventions for metadata |
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333 | if mlen == 0: |
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334 | # Catalog description |
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335 | lastk = None |
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336 | for item in tmsg.splitlines(): |
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337 | item = item.strip() |
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338 | if not item: |
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339 | continue |
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340 | k = v = None |
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341 | if ':' in item: |
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342 | k, v = item.split(':', 1) |
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343 | k = k.strip().lower() |
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344 | v = v.strip() |
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345 | self._info[k] = v |
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346 | lastk = k |
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347 | elif lastk: |
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348 | self._info[lastk] += '\n' + item |
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349 | if k == 'content-type': |
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350 | self._charset = v.split('charset=')[1] |
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351 | elif k == 'plural-forms': |
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352 | v = v.split(';') |
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353 | plural = v[1].split('plural=')[1] |
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354 | self.plural = c2py(plural) |
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355 | # Note: we unconditionally convert both msgids and msgstrs to |
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356 | # Unicode using the character encoding specified in the charset |
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357 | # parameter of the Content-Type header. The gettext documentation |
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358 | # strongly encourages msgids to be us-ascii, but some applications |
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359 | # require alternative encodings (e.g. Zope's ZCML and ZPT). For |
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360 | # traditional gettext applications, the msgid conversion will |
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361 | # cause no problems since us-ascii should always be a subset of |
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362 | # the charset encoding. We may want to fall back to 8-bit msgids |
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363 | # if the Unicode conversion fails. |
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364 | if '\x00' in msg: |
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365 | # Plural forms |
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366 | msgid1, msgid2 = msg.split('\x00') |
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367 | tmsg = tmsg.split('\x00') |
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368 | if self._charset: |
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369 | msgid1 = unicode(msgid1, self._charset) |
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370 | tmsg = [unicode(x, self._charset) for x in tmsg] |
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371 | for i in range(len(tmsg)): |
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372 | catalog[(msgid1, i)] = tmsg[i] |
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373 | else: |
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374 | if self._charset: |
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375 | msg = unicode(msg, self._charset) |
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376 | tmsg = unicode(tmsg, self._charset) |
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377 | catalog[msg] = tmsg |
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378 | # advance to next entry in the seek tables |
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379 | masteridx += 8 |
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380 | transidx += 8 |
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381 | |
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382 | def gettext(self, message): |
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383 | missing = object() |
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384 | tmsg = self._catalog.get(message, missing) |
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385 | if tmsg is missing: |
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386 | if self._fallback: |
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387 | return self._fallback.gettext(message) |
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388 | return message |
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389 | # Encode the Unicode tmsg back to an 8-bit string, if possible |
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390 | if self._output_charset: |
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391 | return tmsg.encode(self._output_charset) |
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392 | elif self._charset: |
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393 | return tmsg.encode(self._charset) |
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394 | return tmsg |
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395 | |
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396 | def pgettext(self, context, message): |
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397 | ctxt_msg_id = self.CONTEXT % (context, message) |
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398 | missing = object() |
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399 | tmsg = self._catalog.get(ctxt_msg_id, missing) |
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400 | if tmsg is missing: |
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401 | if self._fallback: |
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402 | return self._fallback.pgettext(context, message) |
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403 | return message |
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404 | # Encode the Unicode tmsg back to an 8-bit string, if possible |
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405 | if self._output_charset: |
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406 | return tmsg.encode(self._output_charset) |
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407 | elif self._charset: |
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408 | return tmsg.encode(self._charset) |
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409 | return tmsg |
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410 | |
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411 | def lgettext(self, message): |
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412 | missing = object() |
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413 | tmsg = self._catalog.get(message, missing) |
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414 | if tmsg is missing: |
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415 | if self._fallback: |
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416 | return self._fallback.lgettext(message) |
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417 | return message |
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418 | if self._output_charset: |
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419 | return tmsg.encode(self._output_charset) |
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420 | return tmsg.encode(locale.getpreferredencoding()) |
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421 | |
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422 | def lpgettext(self, context, message): |
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423 | ctxt_msg_id = self.CONTEXT % (context, message) |
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424 | missing = object() |
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425 | tmsg = self._catalog.get(ctxt_msg_id, missing) |
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426 | if tmsg is missing: |
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427 | if self._fallback: |
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428 | return self._fallback.lpgettext(context, message) |
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429 | return message |
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430 | if self._output_charset: |
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431 | return tmsg.encode(self._output_charset) |
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432 | return tmsg.encode(locale.getpreferredencoding()) |
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433 | |
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434 | def ngettext(self, msgid1, msgid2, n): |
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435 | try: |
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436 | tmsg = self._catalog[(msgid1, self.plural(n))] |
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437 | if self._output_charset: |
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438 | return tmsg.encode(self._output_charset) |
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439 | elif self._charset: |
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440 | return tmsg.encode(self._charset) |
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441 | return tmsg |
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442 | except KeyError: |
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443 | if self._fallback: |
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444 | return self._fallback.ngettext(msgid1, msgid2, n) |
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445 | if n == 1: |
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446 | return msgid1 |
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447 | else: |
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448 | return msgid2 |
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449 | |
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450 | def npgettext(self, context, msgid1, msgid2, n): |
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451 | ctxt_msg_id = self.CONTEXT % (context, msgid1) |
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452 | try: |
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453 | tmsg = self._catalog[(ctxt_msg_id, self.plural(n))] |
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454 | if self._output_charset: |
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455 | return tmsg.encode(self._output_charset) |
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456 | elif self._charset: |
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457 | return tmsg.encode(self._charset) |
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458 | return tmsg |
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459 | except KeyError: |
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460 | if self._fallback: |
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461 | return self._fallback.npgettext(context, msgid1, msgid2, n) |
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462 | if n == 1: |
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463 | return msgid1 |
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464 | else: |
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465 | return msgid2 |
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466 | |
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467 | def lngettext(self, msgid1, msgid2, n): |
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468 | try: |
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469 | tmsg = self._catalog[(msgid1, self.plural(n))] |
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470 | if self._output_charset: |
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471 | return tmsg.encode(self._output_charset) |
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472 | return tmsg.encode(locale.getpreferredencoding()) |
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473 | except KeyError: |
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474 | if self._fallback: |
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475 | return self._fallback.lngettext(msgid1, msgid2, n) |
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476 | if n == 1: |
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477 | return msgid1 |
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478 | else: |
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479 | return msgid2 |
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480 | |
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481 | def ugettext(self, message): |
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482 | missing = object() |
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483 | tmsg = self._catalog.get(message, missing) |
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484 | if tmsg is missing: |
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485 | if self._fallback: |
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486 | return self._fallback.ugettext(message) |
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487 | return unicode(message) |
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488 | return tmsg |
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489 | |
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490 | def ungettext(self, msgid1, msgid2, n): |
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491 | try: |
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492 | tmsg = self._catalog[(msgid1, self.plural(n))] |
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493 | except KeyError: |
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494 | if self._fallback: |
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495 | return self._fallback.ungettext(msgid1, msgid2, n) |
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496 | if n == 1: |
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497 | tmsg = unicode(msgid1) |
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498 | else: |
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499 | tmsg = unicode(msgid2) |
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500 | return tmsg |
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501 | |
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502 | def lnpgettext(self, context, msgid1, msgid2, n): |
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503 | ctxt_msg_id = self.CONTEXT % (context, msgid1) |
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504 | try: |
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505 | tmsg = self._catalog[(ctxt_msg_id, self.plural(n))] |
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506 | if self._output_charset: |
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507 | return tmsg.encode(self._output_charset) |
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508 | return tmsg.encode(locale.getpreferredencoding()) |
---|
509 | except KeyError: |
---|
510 | if self._fallback: |
---|
511 | return self._fallback.lnpgettext(context, msgid1, msgid2, n) |
---|
512 | if n == 1: |
---|
513 | return msgid1 |
---|
514 | else: |
---|
515 | return msgid2 |
---|
516 | |
---|
517 | |
---|
518 | # Locate a .mo file using the gettext strategy |
---|
519 | def find(domain, localedir=None, languages=None, all=0): |
---|
520 | # Get some reasonable defaults for arguments that were not supplied |
---|
521 | if localedir is None: |
---|
522 | localedir = _default_localedir |
---|
523 | if languages is None: |
---|
524 | languages = [] |
---|
525 | for envar in ('LANGUAGE', 'LC_ALL', 'LC_MESSAGES', 'LANG'): |
---|
526 | val = os.environ.get(envar) |
---|
527 | if val: |
---|
528 | languages = val.split(':') |
---|
529 | break |
---|
530 | if 'C' not in languages: |
---|
531 | languages.append('C') |
---|
532 | # now normalize and expand the languages |
---|
533 | nelangs = [] |
---|
534 | for lang in languages: |
---|
535 | for nelang in _expand_lang(lang): |
---|
536 | if nelang not in nelangs: |
---|
537 | nelangs.append(nelang) |
---|
538 | # select a language |
---|
539 | if all: |
---|
540 | result = [] |
---|
541 | else: |
---|
542 | result = None |
---|
543 | for lang in nelangs: |
---|
544 | if lang == 'C': |
---|
545 | break |
---|
546 | mofile = os.path.join(localedir, lang, 'LC_MESSAGES', '%s.mo' % domain) |
---|
547 | if os.path.exists(mofile): |
---|
548 | if all: |
---|
549 | result.append(mofile) |
---|
550 | else: |
---|
551 | return mofile |
---|
552 | return result |
---|
553 | |
---|
554 | |
---|
555 | |
---|
556 | # a mapping between absolute .mo file path and Translation object |
---|
557 | _translations = {} |
---|
558 | |
---|
559 | def translation(domain, localedir=None, languages=None, |
---|
560 | class_=None, fallback=False, codeset=None): |
---|
561 | if class_ is None: |
---|
562 | class_ = GNUTranslations |
---|
563 | mofiles = find(domain, localedir, languages, all=1) |
---|
564 | if not mofiles: |
---|
565 | if fallback: |
---|
566 | return NullTranslations() |
---|
567 | raise IOError(ENOENT, 'No translation file found for domain', domain) |
---|
568 | # Avoid opening, reading, and parsing the .mo file after it's been done |
---|
569 | # once. |
---|
570 | result = None |
---|
571 | for mofile in mofiles: |
---|
572 | key = (class_, os.path.abspath(mofile)) |
---|
573 | t = _translations.get(key) |
---|
574 | if t is None: |
---|
575 | with open(mofile, 'rb') as fp: |
---|
576 | t = _translations.setdefault(key, class_(fp)) |
---|
577 | # Copy the translation object to allow setting fallbacks and |
---|
578 | # output charset. All other instance data is shared with the |
---|
579 | # cached object. |
---|
580 | t = copy.copy(t) |
---|
581 | if codeset: |
---|
582 | t.set_output_charset(codeset) |
---|
583 | if result is None: |
---|
584 | result = t |
---|
585 | else: |
---|
586 | result.add_fallback(t) |
---|
587 | return result |
---|
588 | |
---|
589 | |
---|
590 | def install(domain, localedir=None, unicode=False, codeset=None, names=None): |
---|
591 | t = translation(domain, localedir, fallback=True, codeset=codeset) |
---|
592 | t.install(unicode, names) |
---|
593 | |
---|
594 | |
---|
595 | |
---|
596 | # a mapping b/w domains and locale directories |
---|
597 | _localedirs = {} |
---|
598 | # a mapping b/w domains and codesets |
---|
599 | _localecodesets = {} |
---|
600 | # current global domain, `messages' used for compatibility w/ GNU gettext |
---|
601 | _current_domain = 'messages' |
---|
602 | |
---|
603 | |
---|
604 | def textdomain(domain=None): |
---|
605 | global _current_domain |
---|
606 | if domain is not None: |
---|
607 | _current_domain = domain |
---|
608 | return _current_domain |
---|
609 | |
---|
610 | |
---|
611 | def bindtextdomain(domain, localedir=None): |
---|
612 | global _localedirs |
---|
613 | if localedir is not None: |
---|
614 | _localedirs[domain] = localedir |
---|
615 | return _localedirs.get(domain, _default_localedir) |
---|
616 | |
---|
617 | |
---|
618 | def bind_textdomain_codeset(domain, codeset=None): |
---|
619 | global _localecodesets |
---|
620 | if codeset is not None: |
---|
621 | _localecodesets[domain] = codeset |
---|
622 | return _localecodesets.get(domain) |
---|
623 | |
---|
624 | |
---|
625 | def dgettext(domain, message): |
---|
626 | try: |
---|
627 | t = translation(domain, _localedirs.get(domain, None), |
---|
628 | codeset=_localecodesets.get(domain)) |
---|
629 | except IOError: |
---|
630 | return message |
---|
631 | return t.gettext(message) |
---|
632 | |
---|
633 | def dpgettext(domain, context, message): |
---|
634 | try: |
---|
635 | t = translation(domain, _localedirs.get(domain, None), |
---|
636 | codeset=_localecodesets.get(domain)) |
---|
637 | except IOError: |
---|
638 | return message |
---|
639 | return t.pgettext(context, message) |
---|
640 | |
---|
641 | def ldgettext(domain, message): |
---|
642 | try: |
---|
643 | t = translation(domain, _localedirs.get(domain, None), |
---|
644 | codeset=_localecodesets.get(domain)) |
---|
645 | except IOError: |
---|
646 | return message |
---|
647 | return t.lgettext(message) |
---|
648 | |
---|
649 | def ldpgettext(domain, context, message): |
---|
650 | try: |
---|
651 | t = translation(domain, _localedirs.get(domain, None), |
---|
652 | codeset=_localecodesets.get(domain)) |
---|
653 | except IOError: |
---|
654 | return message |
---|
655 | return t.lpgettext(context, message) |
---|
656 | |
---|
657 | def dngettext(domain, msgid1, msgid2, n): |
---|
658 | try: |
---|
659 | t = translation(domain, _localedirs.get(domain, None), |
---|
660 | codeset=_localecodesets.get(domain)) |
---|
661 | except IOError: |
---|
662 | if n == 1: |
---|
663 | return msgid1 |
---|
664 | else: |
---|
665 | return msgid2 |
---|
666 | return t.ngettext(msgid1, msgid2, n) |
---|
667 | |
---|
668 | def dnpgettext(domain, context, msgid1, msgid2, n): |
---|
669 | try: |
---|
670 | t = translation(domain, _localedirs.get(domain, None), |
---|
671 | codeset=_localecodesets.get(domain)) |
---|
672 | except IOError: |
---|
673 | if n == 1: |
---|
674 | return msgid1 |
---|
675 | else: |
---|
676 | return msgid2 |
---|
677 | return t.npgettext(context, msgid1, msgid2, n) |
---|
678 | |
---|
679 | def ldngettext(domain, msgid1, msgid2, n): |
---|
680 | try: |
---|
681 | t = translation(domain, _localedirs.get(domain, None), |
---|
682 | codeset=_localecodesets.get(domain)) |
---|
683 | except IOError: |
---|
684 | if n == 1: |
---|
685 | return msgid1 |
---|
686 | else: |
---|
687 | return msgid2 |
---|
688 | return t.lngettext(msgid1, msgid2, n) |
---|
689 | |
---|
690 | def ldnpgettext(domain, context, msgid1, msgid2, n): |
---|
691 | try: |
---|
692 | t = translation(domain, _localedirs.get(domain, None), |
---|
693 | codeset=_localecodesets.get(domain)) |
---|
694 | except IOError: |
---|
695 | if n == 1: |
---|
696 | return msgid1 |
---|
697 | else: |
---|
698 | return msgid2 |
---|
699 | return t.lnpgettext(context, msgid1, msgid2, n) |
---|
700 | |
---|
701 | def gettext(message): |
---|
702 | return dgettext(_current_domain, message) |
---|
703 | |
---|
704 | def pgettext(context, message): |
---|
705 | return dpgettext(_current_domain, context, message) |
---|
706 | |
---|
707 | def lgettext(message): |
---|
708 | return ldgettext(_current_domain, message) |
---|
709 | |
---|
710 | def lpgettext(context, message): |
---|
711 | return ldpgettext(_current_domain, context, message) |
---|
712 | |
---|
713 | def ngettext(msgid1, msgid2, n): |
---|
714 | return dngettext(_current_domain, msgid1, msgid2, n) |
---|
715 | |
---|
716 | def npgettext(context, msgid1, msgid2, n): |
---|
717 | return dnpgettext(_current_domain, context, msgid1, msgid2, n) |
---|
718 | |
---|
719 | def lngettext(msgid1, msgid2, n): |
---|
720 | return ldngettext(_current_domain, msgid1, msgid2, n) |
---|
721 | |
---|
722 | def lnpgettext(context, msgid1, msgid2, n): |
---|
723 | return ldnpgettext(_current_domain, context, msgid1, msgid2, n) |
---|
724 | |
---|
725 | # dcgettext() has been deemed unnecessary and is not implemented. |
---|
726 | |
---|
727 | # James Henstridge's Catalog constructor from GNOME gettext. Documented usage |
---|
728 | # was: |
---|
729 | # |
---|
730 | # import gettext |
---|
731 | # cat = gettext.Catalog(PACKAGE, localedir=LOCALEDIR) |
---|
732 | # _ = cat.gettext |
---|
733 | # print _('Hello World') |
---|
734 | |
---|
735 | # The resulting catalog object currently don't support access through a |
---|
736 | # dictionary API, which was supported (but apparently unused) in GNOME |
---|
737 | # gettext. |
---|
738 | |
---|
739 | Catalog = translation |
---|