Mercurial > hg
annotate i18n/hggettext @ 40084:2cf18f46a1ce
narrow: only walk files within narrowspec also for committed revisions
Narrow has been walking only paths matching the narrowspec when
walking the working copy. We have not done the same filtering when
walking committed revisions (e.g. "hg files -r "), which seems a
little odd. Let's make it consistent.
Differential Revision: https://phab.mercurial-scm.org/D4898
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Fri, 28 Sep 2018 17:09:15 -0700 |
parents | 617ae7e33a65 |
children | 47ef023d0165 |
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1 #!/usr/bin/env python |
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2 # |
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3 # hggettext - carefully extract docstrings for Mercurial |
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4 # |
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5 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others |
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6 # |
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7 # This software may be used and distributed according to the terms of the |
10263 | 8 # GNU General Public License version 2 or any later version. |
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9 |
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10 # The normalize function is taken from pygettext which is distributed |
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11 # with Python under the Python License, which is GPL compatible. |
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12 |
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13 """Extract docstrings from Mercurial commands. |
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14 |
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15 Compared to pygettext, this script knows about the cmdtable and table |
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16 dictionaries used by Mercurial, and will only extract docstrings from |
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17 functions mentioned therein. |
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18 |
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19 Use xgettext like normal to extract strings marked as translatable and |
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20 join the message cataloges to get the final catalog. |
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21 """ |
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22 |
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23 from __future__ import absolute_import, print_function |
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24 |
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25 import inspect |
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26 import os |
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27 import re |
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28 import sys |
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29 |
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30 |
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31 def escape(s): |
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32 # The order is important, the backslash must be escaped first |
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33 # since the other replacements introduce new backslashes |
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34 # themselves. |
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35 s = s.replace('\\', '\\\\') |
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36 s = s.replace('\n', '\\n') |
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37 s = s.replace('\r', '\\r') |
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38 s = s.replace('\t', '\\t') |
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39 s = s.replace('"', '\\"') |
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40 return s |
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41 |
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42 |
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43 def normalize(s): |
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44 # This converts the various Python string types into a format that |
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45 # is appropriate for .po files, namely much closer to C style. |
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46 lines = s.split('\n') |
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47 if len(lines) == 1: |
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48 s = '"' + escape(s) + '"' |
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49 else: |
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50 if not lines[-1]: |
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51 del lines[-1] |
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52 lines[-1] = lines[-1] + '\n' |
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53 lines = map(escape, lines) |
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54 lineterm = '\\n"\n"' |
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55 s = '""\n"' + lineterm.join(lines) + '"' |
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56 return s |
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57 |
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58 |
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59 def poentry(path, lineno, s): |
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60 return ('#: %s:%d\n' % (path, lineno) + |
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61 'msgid %s\n' % normalize(s) + |
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62 'msgstr ""\n') |
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63 |
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64 doctestre = re.compile(r'^ +>>> ', re.MULTILINE) |
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65 |
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66 def offset(src, doc, name, lineno, default): |
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67 """Compute offset or issue a warning on stdout.""" |
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68 # remove doctest part, in order to avoid backslash mismatching |
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69 m = doctestre.search(doc) |
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70 if m: |
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71 doc = doc[:m.start()] |
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72 |
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73 # Backslashes in doc appear doubled in src. |
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74 end = src.find(doc.replace('\\', '\\\\')) |
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75 if end == -1: |
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76 # This can happen if the docstring contains unnecessary escape |
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77 # sequences such as \" in a triple-quoted string. The problem |
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78 # is that \" is turned into " and so doc wont appear in src. |
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79 sys.stderr.write("%s:%d:warning:" |
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80 " unknown docstr offset, assuming %d lines\n" |
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81 % (name, lineno, default)) |
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82 return default |
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83 else: |
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84 return src.count('\n', 0, end) |
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85 |
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86 |
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87 def importpath(path): |
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88 """Import a path like foo/bar/baz.py and return the baz module.""" |
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89 if path.endswith('.py'): |
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90 path = path[:-3] |
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91 if path.endswith('/__init__'): |
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92 path = path[:-9] |
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93 path = path.replace('/', '.') |
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94 mod = __import__(path) |
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95 for comp in path.split('.')[1:]: |
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96 mod = getattr(mod, comp) |
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97 return mod |
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98 |
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99 |
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100 def docstrings(path): |
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101 """Extract docstrings from path. |
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102 |
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103 This respects the Mercurial cmdtable/table convention and will |
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104 only extract docstrings from functions mentioned in these tables. |
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105 """ |
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106 mod = importpath(path) |
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107 if not path.startswith('mercurial/') and mod.__doc__: |
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108 with open(path) as fobj: |
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109 src = fobj.read() |
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110 lineno = 1 + offset(src, mod.__doc__, path, 1, 7) |
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111 print(poentry(path, lineno, mod.__doc__)) |
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112 |
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113 functions = list(getattr(mod, 'i18nfunctions', [])) |
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114 functions = [(f, True) for f in functions] |
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115 |
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116 cmdtable = getattr(mod, 'cmdtable', {}) |
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117 if not cmdtable: |
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118 # Maybe we are processing mercurial.commands? |
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119 cmdtable = getattr(mod, 'table', {}) |
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120 functions.extend((c[0], False) for c in cmdtable.itervalues()) |
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121 |
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122 for func, rstrip in functions: |
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123 if func.__doc__: |
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124 docobj = func # this might be a proxy to provide formatted doc |
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125 func = getattr(func, '_origfunc', func) |
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126 funcmod = inspect.getmodule(func) |
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127 extra = '' |
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128 if funcmod.__package__ == funcmod.__name__: |
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129 extra = '/__init__' |
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130 actualpath = '%s%s.py' % (funcmod.__name__.replace('.', '/'), extra) |
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131 |
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132 src = inspect.getsource(func) |
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133 lineno = inspect.getsourcelines(func)[1] |
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134 doc = docobj.__doc__ |
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135 origdoc = getattr(docobj, '_origdoc', '') |
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136 if rstrip: |
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137 doc = doc.rstrip() |
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138 origdoc = origdoc.rstrip() |
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139 if origdoc: |
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140 lineno += offset(src, origdoc, actualpath, lineno, 1) |
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141 else: |
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142 lineno += offset(src, doc, actualpath, lineno, 1) |
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143 print(poentry(actualpath, lineno, doc)) |
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144 |
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145 |
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146 def rawtext(path): |
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147 with open(path) as f: |
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148 src = f.read() |
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149 print(poentry(path, 1, src)) |
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150 |
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151 |
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152 if __name__ == "__main__": |
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153 # It is very important that we import the Mercurial modules from |
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154 # the source tree where hggettext is executed. Otherwise we might |
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155 # accidentally import and extract strings from a Mercurial |
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156 # installation mentioned in PYTHONPATH. |
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157 sys.path.insert(0, os.getcwd()) |
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158 from mercurial import demandimport; demandimport.enable() |
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159 for path in sys.argv[1:]: |
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160 if path.endswith('.txt'): |
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161 rawtext(path) |
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162 else: |
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163 docstrings(path) |