Mercurial > hg
annotate mercurial/registrar.py @ 28501:66513f6ca038
commands: centralize code to update with extra care for non-file components
This patch centralizes similar code paths to update the working
directory with extra care for non-file components (e.g. bookmark) into
newly added function updatetotally().
'if True' at the beginning of updatetotally() is redundant at this
patch, but useful to reduce amount of changes in subsequent patch.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Sat, 12 Mar 2016 04:35:42 +0900 |
parents | 4eb5496c2bd4 |
children | 009f58f1ea75 |
rev | line source |
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1 # registrar.py - utilities to register function for specific purpose |
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2 # |
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3 # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others |
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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 from __future__ import absolute_import |
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9 |
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10 from . import ( |
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11 util, |
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12 ) |
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13 |
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14 class _funcregistrarbase(object): |
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15 """Base of decorator to register a fuction for specific purpose |
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16 |
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17 This decorator stores decorated functions into own dict 'table'. |
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18 |
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19 The least derived class can be defined by overriding 'formatdoc', |
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20 for example:: |
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21 |
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22 class keyword(_funcregistrarbase): |
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23 _docformat = ":%s: %s" |
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24 |
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25 This should be used as below: |
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26 |
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27 keyword = registrar.keyword() |
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28 |
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29 @keyword('bar') |
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30 def barfunc(*args, **kwargs): |
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31 '''Explanation of bar keyword .... |
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32 ''' |
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33 pass |
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34 |
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35 In this case: |
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36 |
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37 - 'barfunc' is stored as 'bar' in '_table' of an instance 'keyword' above |
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38 - 'barfunc.__doc__' becomes ":bar: Explanation of bar keyword" |
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39 """ |
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40 def __init__(self, table=None): |
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41 if table is None: |
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42 self._table = {} |
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43 else: |
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44 self._table = table |
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45 |
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46 def __call__(self, decl, *args, **kwargs): |
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47 return lambda func: self._doregister(func, decl, *args, **kwargs) |
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48 |
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49 def _doregister(self, func, decl, *args, **kwargs): |
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50 name = self._getname(decl) |
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51 |
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52 if func.__doc__ and not util.safehasattr(func, '_origdoc'): |
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53 doc = func.__doc__.strip() |
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54 func._origdoc = doc |
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55 func.__doc__ = self._formatdoc(decl, doc) |
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56 |
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57 self._table[name] = func |
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58 self._extrasetup(name, func, *args, **kwargs) |
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59 |
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60 return func |
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61 |
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62 def _parsefuncdecl(self, decl): |
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63 """Parse function declaration and return the name of function in it |
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64 """ |
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65 i = decl.find('(') |
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66 if i >= 0: |
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67 return decl[:i] |
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68 else: |
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69 return decl |
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70 |
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71 def _getname(self, decl): |
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72 """Return the name of the registered function from decl |
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73 |
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74 Derived class should override this, if it allows more |
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75 descriptive 'decl' string than just a name. |
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76 """ |
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77 return decl |
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78 |
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79 _docformat = None |
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80 |
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81 def _formatdoc(self, decl, doc): |
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82 """Return formatted document of the registered function for help |
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83 |
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84 'doc' is '__doc__.strip()' of the registered function. |
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85 """ |
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86 return self._docformat % (decl, doc) |
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87 |
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88 def _extrasetup(self, name, func): |
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89 """Execute exra setup for registered function, if needed |
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90 """ |
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91 pass |
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92 |
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93 class revsetpredicate(_funcregistrarbase): |
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94 """Decorator to register revset predicate |
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95 |
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96 Usage:: |
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97 |
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98 revsetpredicate = registrar.revsetpredicate() |
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99 |
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100 @revsetpredicate('mypredicate(arg1, arg2[, arg3])') |
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101 def mypredicatefunc(repo, subset, x): |
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102 '''Explanation of this revset predicate .... |
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103 ''' |
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104 pass |
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105 |
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106 The first string argument is used also in online help. |
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107 |
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108 Optional argument 'safe' indicates whether a predicate is safe for |
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109 DoS attack (False by default). |
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110 |
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111 'revsetpredicate' instance in example above can be used to |
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112 decorate multiple functions. |
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113 |
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114 Decorated functions are registered automatically at loading |
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115 extension, if an instance named as 'revsetpredicate' is used for |
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116 decorating in extension. |
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117 |
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118 Otherwise, explicit 'revset.loadpredicate()' is needed. |
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119 """ |
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120 _getname = _funcregistrarbase._parsefuncdecl |
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121 _docformat = "``%s``\n %s" |
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122 |
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123 def _extrasetup(self, name, func, safe=False): |
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124 func._safe = safe |
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125 |
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126 class filesetpredicate(_funcregistrarbase): |
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127 """Decorator to register fileset predicate |
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128 |
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129 Usage:: |
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130 |
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131 filesetpredicate = registrar.filesetpredicate() |
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132 |
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133 @filesetpredicate('mypredicate()') |
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134 def mypredicatefunc(mctx, x): |
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135 '''Explanation of this fileset predicate .... |
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136 ''' |
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137 pass |
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138 |
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139 The first string argument is used also in online help. |
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140 |
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141 Optional argument 'callstatus' indicates whether a predicate |
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142 implies 'matchctx.status()' at runtime or not (False, by |
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143 default). |
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144 |
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145 Optional argument 'callexisting' indicates whether a predicate |
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146 implies 'matchctx.existing()' at runtime or not (False, by |
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147 default). |
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148 |
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149 'filesetpredicate' instance in example above can be used to |
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150 decorate multiple functions. |
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151 |
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152 Decorated functions are registered automatically at loading |
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153 extension, if an instance named as 'filesetpredicate' is used for |
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154 decorating in extension. |
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155 |
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156 Otherwise, explicit 'fileset.loadpredicate()' is needed. |
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157 """ |
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158 _getname = _funcregistrarbase._parsefuncdecl |
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159 _docformat = "``%s``\n %s" |
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160 |
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161 def _extrasetup(self, name, func, callstatus=False, callexisting=False): |
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162 func._callstatus = callstatus |
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163 func._callexisting = callexisting |