Mercurial > hg
annotate mercurial/extensions.py @ 15711:c51c9dc13a58
cygwin: add cygwin specific normcase logic
in cygwin environment, mount point part of path is treated as case
sensitive, even though underlying NTFS is case insensitive.
this patch preserves mount point part of specified path, only if it is
absolute one.
there is no easy way to get list of current mount points from python
program, other than to execute "mount" external command, because
cygwin does not store current mount points into Unix/Linux like
/etc/XXXtab file.
so, this patch introduces cygwinmountpoints variable to list mount
points to be preserved case.
this allows some other extensions to customize mount point
configuration.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Fri, 16 Dec 2011 21:21:08 +0900 |
parents | 56da00994067 |
children | b9bef21cd214 |
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1 # extensions.py - extension handling for mercurial |
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2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import imp, os |
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9 import util, cmdutil, error |
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10 from i18n import _, gettext |
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11 |
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12 _extensions = {} |
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13 _order = [] |
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14 _ignore = ['hbisect', 'bookmarks', 'parentrevspec'] |
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15 |
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16 def extensions(): |
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17 for name in _order: |
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18 module = _extensions[name] |
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19 if module: |
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20 yield name, module |
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21 |
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22 def find(name): |
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23 '''return module with given extension name''' |
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24 mod = None |
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25 try: |
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26 mod = _extensions[name] |
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27 except KeyError: |
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28 for k, v in _extensions.iteritems(): |
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29 if k.endswith('.' + name) or k.endswith('/' + name): |
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30 mod = v |
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31 break |
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32 if not mod: |
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33 raise KeyError(name) |
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34 return mod |
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35 |
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36 def loadpath(path, module_name): |
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37 module_name = module_name.replace('.', '_') |
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38 path = util.expandpath(path) |
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39 if os.path.isdir(path): |
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40 # module/__init__.py style |
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41 d, f = os.path.split(path.rstrip('/')) |
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42 fd, fpath, desc = imp.find_module(f, [d]) |
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43 return imp.load_module(module_name, fd, fpath, desc) |
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44 else: |
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45 return imp.load_source(module_name, path) |
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46 |
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47 def load(ui, name, path): |
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48 # unused ui argument kept for backwards compatibility |
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49 if name.startswith('hgext.') or name.startswith('hgext/'): |
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50 shortname = name[6:] |
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51 else: |
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52 shortname = name |
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53 if shortname in _ignore: |
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54 return None |
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55 if shortname in _extensions: |
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56 return _extensions[shortname] |
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57 _extensions[shortname] = None |
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58 if path: |
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59 # the module will be loaded in sys.modules |
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60 # choose an unique name so that it doesn't |
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61 # conflicts with other modules |
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62 mod = loadpath(path, 'hgext.%s' % name) |
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63 else: |
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64 def importh(name): |
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65 mod = __import__(name) |
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66 components = name.split('.') |
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67 for comp in components[1:]: |
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68 mod = getattr(mod, comp) |
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69 return mod |
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70 try: |
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71 mod = importh("hgext.%s" % name) |
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72 except ImportError, err: |
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73 ui.debug('could not import hgext.%s (%s): trying %s\n' |
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74 % (name, err, name)) |
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75 mod = importh(name) |
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76 _extensions[shortname] = mod |
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77 _order.append(shortname) |
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78 return mod |
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79 |
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80 def loadall(ui): |
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81 result = ui.configitems("extensions") |
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82 newindex = len(_order) |
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83 for (name, path) in result: |
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84 if path: |
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85 if path[0] == '!': |
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86 continue |
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87 try: |
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88 load(ui, name, path) |
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89 except KeyboardInterrupt: |
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90 raise |
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91 except Exception, inst: |
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92 if path: |
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93 ui.warn(_("*** failed to import extension %s from %s: %s\n") |
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94 % (name, path, inst)) |
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95 else: |
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96 ui.warn(_("*** failed to import extension %s: %s\n") |
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97 % (name, inst)) |
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98 if ui.traceback(): |
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99 return 1 |
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100 |
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101 for name in _order[newindex:]: |
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102 uisetup = getattr(_extensions[name], 'uisetup', None) |
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103 if uisetup: |
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104 uisetup(ui) |
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105 |
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106 for name in _order[newindex:]: |
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107 extsetup = getattr(_extensions[name], 'extsetup', None) |
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108 if extsetup: |
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109 try: |
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110 extsetup(ui) |
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111 except TypeError: |
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112 if extsetup.func_code.co_argcount != 0: |
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113 raise |
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114 extsetup() # old extsetup with no ui argument |
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115 |
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116 def wrapcommand(table, command, wrapper): |
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117 '''Wrap the command named `command' in table |
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118 |
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119 Replace command in the command table with wrapper. The wrapped command will |
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120 be inserted into the command table specified by the table argument. |
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121 |
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122 The wrapper will be called like |
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123 |
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124 wrapper(orig, *args, **kwargs) |
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125 |
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126 where orig is the original (wrapped) function, and *args, **kwargs |
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127 are the arguments passed to it. |
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128 ''' |
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129 assert util.safehasattr(wrapper, '__call__') |
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130 aliases, entry = cmdutil.findcmd(command, table) |
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131 for alias, e in table.iteritems(): |
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132 if e is entry: |
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133 key = alias |
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134 break |
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135 |
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136 origfn = entry[0] |
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137 def wrap(*args, **kwargs): |
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138 return util.checksignature(wrapper)( |
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139 util.checksignature(origfn), *args, **kwargs) |
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140 |
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141 wrap.__doc__ = getattr(origfn, '__doc__') |
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142 wrap.__module__ = getattr(origfn, '__module__') |
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143 |
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144 newentry = list(entry) |
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145 newentry[0] = wrap |
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146 table[key] = tuple(newentry) |
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147 return entry |
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148 |
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149 def wrapfunction(container, funcname, wrapper): |
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150 '''Wrap the function named funcname in container |
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151 |
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152 Replace the funcname member in the given container with the specified |
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153 wrapper. The container is typically a module, class, or instance. |
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154 |
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155 The wrapper will be called like |
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156 |
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157 wrapper(orig, *args, **kwargs) |
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158 |
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159 where orig is the original (wrapped) function, and *args, **kwargs |
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160 are the arguments passed to it. |
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161 |
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162 Wrapping methods of the repository object is not recommended since |
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163 it conflicts with extensions that extend the repository by |
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164 subclassing. All extensions that need to extend methods of |
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165 localrepository should use this subclassing trick: namely, |
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166 reposetup() should look like |
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167 |
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168 def reposetup(ui, repo): |
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169 class myrepo(repo.__class__): |
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170 def whatever(self, *args, **kwargs): |
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171 [...extension stuff...] |
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172 super(myrepo, self).whatever(*args, **kwargs) |
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173 [...extension stuff...] |
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174 |
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175 repo.__class__ = myrepo |
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176 |
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177 In general, combining wrapfunction() with subclassing does not |
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178 work. Since you cannot control what other extensions are loaded by |
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179 your end users, you should play nicely with others by using the |
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180 subclass trick. |
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181 ''' |
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182 assert util.safehasattr(wrapper, '__call__') |
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183 def wrap(*args, **kwargs): |
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184 return wrapper(origfn, *args, **kwargs) |
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185 |
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186 origfn = getattr(container, funcname) |
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187 assert util.safehasattr(origfn, '__call__') |
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188 setattr(container, funcname, wrap) |
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189 return origfn |
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190 |
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191 def _disabledpaths(strip_init=False): |
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192 '''find paths of disabled extensions. returns a dict of {name: path} |
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193 removes /__init__.py from packages if strip_init is True''' |
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194 import hgext |
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195 extpath = os.path.dirname(os.path.abspath(hgext.__file__)) |
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196 try: # might not be a filesystem path |
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197 files = os.listdir(extpath) |
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198 except OSError: |
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199 return {} |
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200 |
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201 exts = {} |
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202 for e in files: |
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203 if e.endswith('.py'): |
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204 name = e.rsplit('.', 1)[0] |
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205 path = os.path.join(extpath, e) |
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206 else: |
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207 name = e |
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208 path = os.path.join(extpath, e, '__init__.py') |
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209 if not os.path.exists(path): |
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210 continue |
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211 if strip_init: |
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212 path = os.path.dirname(path) |
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213 if name in exts or name in _order or name == '__init__': |
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214 continue |
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215 exts[name] = path |
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216 return exts |
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217 |
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218 def _moduledoc(file): |
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219 '''return the top-level python documentation for the given file |
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220 |
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221 Loosely inspired by pydoc.source_synopsis(), but rewritten to |
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222 handle triple quotes and to return the whole text instead of just |
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223 the synopsis''' |
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224 result = [] |
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225 |
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226 line = file.readline() |
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227 while line[:1] == '#' or not line.strip(): |
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228 line = file.readline() |
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229 if not line: |
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230 break |
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231 |
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232 start = line[:3] |
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233 if start == '"""' or start == "'''": |
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234 line = line[3:] |
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235 while line: |
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236 if line.rstrip().endswith(start): |
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237 line = line.split(start)[0] |
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238 if line: |
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239 result.append(line) |
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240 break |
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241 elif not line: |
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242 return None # unmatched delimiter |
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243 result.append(line) |
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244 line = file.readline() |
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245 else: |
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246 return None |
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247 |
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248 return ''.join(result) |
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249 |
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250 def _disabledhelp(path): |
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251 '''retrieve help synopsis of a disabled extension (without importing)''' |
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252 try: |
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253 file = open(path) |
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254 except IOError: |
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255 return |
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256 else: |
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257 doc = _moduledoc(file) |
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258 file.close() |
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259 |
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260 if doc: # extracting localized synopsis |
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261 return gettext(doc).splitlines()[0] |
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262 else: |
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263 return _('(no help text available)') |
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264 |
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265 def disabled(): |
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266 '''find disabled extensions from hgext. returns a dict of {name: desc}''' |
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267 try: |
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268 from hgext import __index__ |
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269 return dict((name, gettext(desc)) |
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270 for name, desc in __index__.docs.iteritems() |
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271 if name not in _order) |
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272 except ImportError: |
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273 pass |
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274 |
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275 paths = _disabledpaths() |
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276 if not paths: |
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277 return None |
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278 |
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279 exts = {} |
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280 for name, path in paths.iteritems(): |
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281 doc = _disabledhelp(path) |
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282 if doc: |
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283 exts[name] = doc |
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284 |
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285 return exts |
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286 |
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287 def disabledext(name): |
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288 '''find a specific disabled extension from hgext. returns desc''' |
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289 try: |
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290 from hgext import __index__ |
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291 if name in _order: # enabled |
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292 return |
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293 else: |
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294 return gettext(__index__.docs.get(name)) |
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295 except ImportError: |
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296 pass |
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297 |
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298 paths = _disabledpaths() |
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299 if name in paths: |
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300 return _disabledhelp(paths[name]) |
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301 |
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302 def disabledcmd(ui, cmd, strict=False): |
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303 '''import disabled extensions until cmd is found. |
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304 returns (cmdname, extname, doc)''' |
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305 |
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306 paths = _disabledpaths(strip_init=True) |
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307 if not paths: |
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308 raise error.UnknownCommand(cmd) |
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309 |
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310 def findcmd(cmd, name, path): |
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311 try: |
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312 mod = loadpath(path, 'hgext.%s' % name) |
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313 except Exception: |
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314 return |
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315 try: |
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316 aliases, entry = cmdutil.findcmd(cmd, |
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317 getattr(mod, 'cmdtable', {}), strict) |
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318 except (error.AmbiguousCommand, error.UnknownCommand): |
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319 return |
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320 except Exception: |
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321 ui.warn(_('warning: error finding commands in %s\n') % path) |
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322 ui.traceback() |
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323 return |
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324 for c in aliases: |
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325 if c.startswith(cmd): |
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326 cmd = c |
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327 break |
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328 else: |
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329 cmd = aliases[0] |
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330 return (cmd, name, mod) |
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331 |
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332 # first, search for an extension with the same name as the command |
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333 path = paths.pop(cmd, None) |
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334 if path: |
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335 ext = findcmd(cmd, cmd, path) |
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336 if ext: |
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337 return ext |
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338 |
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339 # otherwise, interrogate each extension until there's a match |
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340 for name, path in paths.iteritems(): |
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341 ext = findcmd(cmd, name, path) |
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342 if ext: |
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343 return ext |
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344 |
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345 raise error.UnknownCommand(cmd) |
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346 |
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347 def enabled(): |
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348 '''return a dict of {name: desc} of extensions''' |
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349 exts = {} |
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350 for ename, ext in extensions(): |
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351 doc = (gettext(ext.__doc__) or _('(no help text available)')) |
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352 ename = ename.split('.')[-1] |
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353 exts[ename] = doc.splitlines()[0].strip() |
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354 |
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355 return exts |