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annotate hgsubversion/compathacks.py @ 1572:51e105c7f0c6

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compathacks: deal with removed aliases in mercurial.util
author Augie Fackler <raf@durin42.com>
date Sun, 27 May 2018 00:29:38 -0400
parents 8410a978c650
children 7bb6562feb85
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1139
d1bd52202c6d compathacks: specify for generic compatibility hacks
Sean Farley <sean.michael.farley@gmail.com>
parents: 1138
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1 """Functions to work around API changes."""
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2
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3 import errno
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4 import sys
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5
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6 from mercurial import util
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7
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8 def branchset(repo):
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9 """Return the set of branches present in a repo.
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10
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11 Works around branchtags() vanishing between 2.8 and 2.9.
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12 """
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13 try:
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14 return set(repo.branchmap())
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15 except AttributeError:
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16 return set(repo.branchtags())
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17
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18 def pickle_load(f):
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19 import cPickle as pickle
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20 f.seek(0)
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21 return pickle.load(f)
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22
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23 def makememfilectx(repo, memctx, path, data, islink, isexec, copied):
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24 """Return a memfilectx
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25
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26 Works around API change by 8a0cac20a1ad (first in 4.5).
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27 """
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28 from mercurial import context
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29 try:
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30 return context.memfilectx(repo=repo, path=path, data=data,
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31 islink=islink, isexec=isexec, copied=copied,
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32 changectx=memctx)
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33 except TypeError:
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34 return context.memfilectx(repo=repo, path=path, data=data,
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35 islink=islink, isexec=isexec, copied=copied)
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36
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37 def filectxfn_deleted(memctx, path):
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38 """
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39 Return None or raise an IOError as necessary if path is deleted.
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40
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41 Call as:
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42
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43 if path_missing:
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44 return compathacks.filectxfn_deleted(memctx, path)
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45
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46 Works around filectxfn's contract changing between 3.1 and 3.2: 3.2 onwards,
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47 for deleted files, filectxfn should return None rather than returning
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48 IOError.
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49 """
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50 if getattr(memctx, '_returnnoneformissingfiles', False):
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51 return None
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52 raise IOError(errno.ENOENT, '%s is deleted' % path)
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53
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54 def filectxfn_deleted_reraise(memctx):
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55 """
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56 Return None or reraise exc as necessary.
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57
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58 Call as:
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59
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60 try:
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61 # code that raises IOError if the path is missing
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62 except IOError:
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63 return compathacks.filectxfn_deleted_reraise(memctx)
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64
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65 Works around filectxfn's contract changing between 3.1 and 3.2: 3.2 onwards,
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66 for deleted files, filectxfn should return None rather than returning
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67 IOError.
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68 """
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69 exc_info = sys.exc_info()
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70 if (exc_info[1].errno == errno.ENOENT and
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71 getattr(memctx, '_returnnoneformissingfiles', False)):
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72 return None
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73 # preserve traceback info
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74 raise exc_info[0], exc_info[1], exc_info[2]
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75
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76 # copied from hg 3.8
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77 class _funcregistrarbase(object):
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78 """Base of decorator to register a fuction for specific purpose
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79
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80 This decorator stores decorated functions into own dict 'table'.
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81
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82 The least derived class can be defined by overriding 'formatdoc',
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83 for example::
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84
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85 class keyword(_funcregistrarbase):
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86 _docformat = ":%s: %s"
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87
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88 This should be used as below:
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89
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90 keyword = registrar.keyword()
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91
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92 @keyword('bar')
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93 def barfunc(*args, **kwargs):
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94 '''Explanation of bar keyword ....
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95 '''
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96 pass
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97
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98 In this case:
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99
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100 - 'barfunc' is stored as 'bar' in '_table' of an instance 'keyword' above
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101 - 'barfunc.__doc__' becomes ":bar: Explanation of bar keyword"
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102 """
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103 def __init__(self, table=None):
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104 if table is None:
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105 self._table = {}
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106 else:
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107 self._table = table
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108
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109 def __call__(self, decl, *args, **kwargs):
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110 return lambda func: self._doregister(func, decl, *args, **kwargs)
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111
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112 def _doregister(self, func, decl, *args, **kwargs):
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113 name = self._getname(decl)
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114
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115 if func.__doc__ and not util.safehasattr(func, '_origdoc'):
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116 doc = func.__doc__.strip()
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117 func._origdoc = doc
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118 func.__doc__ = self._formatdoc(decl, doc)
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119
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120 self._table[name] = func
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121 self._extrasetup(name, func, *args, **kwargs)
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122
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123 return func
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124
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125 def _parsefuncdecl(self, decl):
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126 """Parse function declaration and return the name of function in it
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127 """
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128 i = decl.find('(')
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129 if i >= 0:
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130 return decl[:i]
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131 else:
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132 return decl
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133
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134 def _getname(self, decl):
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135 """Return the name of the registered function from decl
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136
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137 Derived class should override this, if it allows more
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138 descriptive 'decl' string than just a name.
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139 """
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140 return decl
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141
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142 _docformat = None
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143
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144 def _formatdoc(self, decl, doc):
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145 """Return formatted document of the registered function for help
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146
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147 'doc' is '__doc__.strip()' of the registered function.
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148 """
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149 return self._docformat % (decl, doc)
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150
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151 def _extrasetup(self, name, func):
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152 """Execute exra setup for registered function, if needed
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153 """
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154 pass
1572
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155
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156 try:
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157 binary = util.binary
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158 except AttributeError:
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159 from mercurial.utils import stringutil
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160 binary = stringutil.binary
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161
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162 try:
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163 datestr = util.datestr
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164 except AttributeError:
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165 from mercurial.utils import dateutil
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166 datestr = dateutil.datestr