annotate mercurial/extensions.py @ 10363:c07974215b3d

extensions: refactor disabled()
author Brodie Rao <me+hg@dackz.net>
date Sun, 07 Feb 2010 11:32:08 +0100
parents 25e572394f5c
children de1e7099d100
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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
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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, help
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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
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15 def extensions():
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16 for name in _order:
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17 module = _extensions[name]
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18 if module:
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19 yield name, module
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20
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21 def find(name):
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22 '''return module with given extension name'''
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23 try:
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24 return _extensions[name]
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25 except KeyError:
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26 for k, v in _extensions.iteritems():
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27 if k.endswith('.' + name) or k.endswith('/' + name):
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28 return v
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29 raise KeyError(name)
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30
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31 def loadpath(path, module_name):
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32 module_name = module_name.replace('.', '_')
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33 path = util.expandpath(path)
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34 if os.path.isdir(path):
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35 # module/__init__.py style
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36 d, f = os.path.split(path.rstrip('/'))
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37 fd, fpath, desc = imp.find_module(f, [d])
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38 return imp.load_module(module_name, fd, fpath, desc)
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39 else:
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40 return imp.load_source(module_name, path)
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41
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42 def load(ui, name, path):
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43 # unused ui argument kept for backwards compatibility
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44 if name.startswith('hgext.') or name.startswith('hgext/'):
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45 shortname = name[6:]
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46 else:
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47 shortname = name
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48 if shortname in _extensions:
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49 return
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50 _extensions[shortname] = None
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51 if path:
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52 # the module will be loaded in sys.modules
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53 # choose an unique name so that it doesn't
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54 # conflicts with other modules
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55 mod = loadpath(path, 'hgext.%s' % name)
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56 else:
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57 def importh(name):
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58 mod = __import__(name)
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59 components = name.split('.')
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60 for comp in components[1:]:
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61 mod = getattr(mod, comp)
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62 return mod
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63 try:
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64 mod = importh("hgext.%s" % name)
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65 except ImportError:
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66 mod = importh(name)
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67 _extensions[shortname] = mod
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68 _order.append(shortname)
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69
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70 def loadall(ui):
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71 result = ui.configitems("extensions")
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72 newindex = len(_order)
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73 for (name, path) in result:
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74 if path:
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75 if path[0] == '!':
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76 continue
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77 try:
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78 load(ui, name, path)
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79 except KeyboardInterrupt:
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80 raise
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81 except Exception, inst:
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82 if path:
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83 ui.warn(_("*** failed to import extension %s from %s: %s\n")
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84 % (name, path, inst))
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85 else:
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86 ui.warn(_("*** failed to import extension %s: %s\n")
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87 % (name, inst))
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88 if ui.traceback():
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89 return 1
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90
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91 for name in _order[newindex:]:
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92 uisetup = getattr(_extensions[name], 'uisetup', None)
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93 if uisetup:
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94 uisetup(ui)
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95
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96 for name in _order[newindex:]:
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97 extsetup = getattr(_extensions[name], 'extsetup', None)
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98 if extsetup:
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99 try:
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100 extsetup(ui)
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101 except TypeError:
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102 if extsetup.func_code.co_argcount != 0:
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103 raise
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104 extsetup() # old extsetup with no ui argument
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105
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106 def wrapcommand(table, command, wrapper):
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107 aliases, entry = cmdutil.findcmd(command, table)
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108 for alias, e in table.iteritems():
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109 if e is entry:
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110 key = alias
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111 break
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112
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113 origfn = entry[0]
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114 def wrap(*args, **kwargs):
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115 return util.checksignature(wrapper)(
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116 util.checksignature(origfn), *args, **kwargs)
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117
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118 wrap.__doc__ = getattr(origfn, '__doc__')
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119 wrap.__module__ = getattr(origfn, '__module__')
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120
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121 newentry = list(entry)
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122 newentry[0] = wrap
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123 table[key] = tuple(newentry)
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124 return entry
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125
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126 def wrapfunction(container, funcname, wrapper):
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127 def wrap(*args, **kwargs):
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128 return wrapper(origfn, *args, **kwargs)
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129
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130 origfn = getattr(container, funcname)
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131 setattr(container, funcname, wrap)
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132 return origfn
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133
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134 def _disabledpaths():
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135 '''find paths of disabled extensions. returns a dict of {name: path}'''
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136 import hgext
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137 extpath = os.path.dirname(os.path.abspath(hgext.__file__))
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138 try: # might not be a filesystem path
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139 files = os.listdir(extpath)
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140 except OSError:
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141 return {}
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142
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143 exts = {}
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Cédric Duval <cedricduval@free.fr>
parents: 8896
diff changeset
144 for e in files:
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
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145 if e.endswith('.py'):
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
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146 name = e.rsplit('.', 1)[0]
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
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147 path = os.path.join(extpath, e)
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parents: 8871
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148 else:
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
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149 name = e
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
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150 path = os.path.join(extpath, e, '__init__.py')
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08636e18268f extensions: check for path existence only when necessary
Cédric Duval <cedricduval@free.fr>
parents: 8876
diff changeset
151 if not os.path.exists(path):
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Cédric Duval <cedricduval@free.fr>
parents: 8876
diff changeset
152 continue
10363
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
153 if name in exts or name in _order or name == '__init__':
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
154 continue
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
155 exts[name] = path
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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156 return exts
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Dirkjan Ochtman <dirkjan@ochtman.nl>
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157
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
158 def _disabledhelp(path):
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parents: 10263
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159 '''retrieve help synopsis of a disabled extension (without importing)'''
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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160 try:
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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161 file = open(path)
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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162 except IOError:
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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163 return
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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164 else:
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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165 doc = help.moduledoc(file)
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
166 file.close()
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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167
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
168 if doc: # extracting localized synopsis
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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169 return gettext(doc).splitlines()[0]
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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170 else:
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
171 return _('(no help text available)')
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parents: 10263
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172
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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173 def disabled():
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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174 '''find disabled extensions from hgext
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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175 returns a dict of {name: desc}, and the max name length'''
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
176
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
177 paths = _disabledpaths()
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
178 if not paths:
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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179 return None, 0
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
180
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
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181 exts = {}
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Brodie Rao <me+hg@dackz.net>
parents: 10263
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182 maxlength = 0
c07974215b3d extensions: refactor disabled()
Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
183 for name, path in paths.iteritems():
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
184 doc = _disabledhelp(path)
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
185 if not doc:
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
diff changeset
186 continue
8871
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
187
10363
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Brodie Rao <me+hg@dackz.net>
parents: 10263
diff changeset
188 exts[name] = doc
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
diff changeset
189 if len(name) > maxlength:
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8871
diff changeset
190 maxlength = len(name)
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Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
191
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
192 return exts, maxlength
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
193
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
194 def enabled():
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
195 '''return a dict of {name: desc} of extensions, and the max name length'''
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
196 exts = {}
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
197 maxlength = 0
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
198 for ename, ext in extensions():
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
199 doc = (gettext(ext.__doc__) or _('(no help text available)'))
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
200 ename = ename.split('.')[-1]
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
201 maxlength = max(len(ename), maxlength)
9136
31177742f54a for calls expecting bool args, pass bool instead of int
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 9020
diff changeset
202 exts[ename] = doc.splitlines()[0].strip()
8871
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Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
203
20a25042fadc extensions: move extensions listing functions from mercurial.help
Cédric Duval <cedricduval@free.fr>
parents: 8225
diff changeset
204 return exts, maxlength