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@@ -1,283 +1,281 b'' | |||
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1 | 1 | # hook.py - hook support for mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2007 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import os |
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11 | 11 | import sys |
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12 | 12 | |
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13 | 13 | from .i18n import _ |
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14 | 14 | from . import ( |
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15 | 15 | demandimport, |
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16 | 16 | encoding, |
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17 | 17 | error, |
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18 | 18 | extensions, |
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19 | 19 | pycompat, |
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20 | 20 | util, |
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21 | 21 | ) |
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22 | 22 | from .utils import ( |
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23 | 23 | procutil, |
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24 | 24 | stringutil, |
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25 | 25 | ) |
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26 | 26 | |
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27 | 27 | def pythonhook(ui, repo, htype, hname, funcname, args, throw): |
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28 | 28 | '''call python hook. hook is callable object, looked up as |
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29 | 29 | name in python module. if callable returns "true", hook |
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30 | 30 | fails, else passes. if hook raises exception, treated as |
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31 | 31 | hook failure. exception propagates if throw is "true". |
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32 | 32 | |
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33 | 33 | reason for "true" meaning "hook failed" is so that |
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34 | 34 | unmodified commands (e.g. mercurial.commands.update) can |
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35 | 35 | be run as hooks without wrappers to convert return values.''' |
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36 | 36 | |
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37 | 37 | if callable(funcname): |
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38 | 38 | obj = funcname |
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39 | 39 | funcname = pycompat.sysbytes(obj.__module__ + r"." + obj.__name__) |
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40 | 40 | else: |
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41 | 41 | d = funcname.rfind('.') |
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42 | 42 | if d == -1: |
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43 | 43 | raise error.HookLoadError( |
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44 | 44 | _('%s hook is invalid: "%s" not in a module') |
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45 | 45 | % (hname, funcname)) |
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46 | 46 | modname = funcname[:d] |
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47 | 47 | oldpaths = sys.path |
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48 | 48 | if procutil.mainfrozen(): |
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49 | 49 | # binary installs require sys.path manipulation |
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50 | 50 | modpath, modfile = os.path.split(modname) |
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51 | 51 | if modpath and modfile: |
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52 | 52 | sys.path = sys.path[:] + [modpath] |
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53 | 53 | modname = modfile |
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54 | 54 | with demandimport.deactivated(): |
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55 | 55 | try: |
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56 | 56 | obj = __import__(pycompat.sysstr(modname)) |
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57 | 57 | except (ImportError, SyntaxError): |
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58 | 58 | e1 = sys.exc_info() |
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59 | 59 | try: |
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60 | 60 | # extensions are loaded with hgext_ prefix |
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61 | 61 | obj = __import__(r"hgext_%s" % pycompat.sysstr(modname)) |
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62 | 62 | except (ImportError, SyntaxError): |
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63 | 63 | e2 = sys.exc_info() |
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64 | 64 | if ui.tracebackflag: |
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65 | 65 | ui.warn(_('exception from first failed import ' |
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66 | 66 | 'attempt:\n')) |
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67 | 67 | ui.traceback(e1) |
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68 | 68 | if ui.tracebackflag: |
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69 | 69 | ui.warn(_('exception from second failed import ' |
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70 | 70 | 'attempt:\n')) |
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71 | 71 | ui.traceback(e2) |
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72 | 72 | |
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73 | 73 | if not ui.tracebackflag: |
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74 | 74 | tracebackhint = _( |
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75 | 75 | 'run with --traceback for stack trace') |
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76 | 76 | else: |
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77 | 77 | tracebackhint = None |
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78 | 78 | raise error.HookLoadError( |
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79 | 79 | _('%s hook is invalid: import of "%s" failed') % |
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80 | 80 | (hname, modname), hint=tracebackhint) |
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81 | 81 | sys.path = oldpaths |
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82 | 82 | try: |
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83 | 83 | for p in funcname.split('.')[1:]: |
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84 | 84 | obj = getattr(obj, p) |
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85 | 85 | except AttributeError: |
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86 | 86 | raise error.HookLoadError( |
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87 | 87 | _('%s hook is invalid: "%s" is not defined') |
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88 | 88 | % (hname, funcname)) |
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89 | 89 | if not callable(obj): |
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90 | 90 | raise error.HookLoadError( |
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91 | 91 | _('%s hook is invalid: "%s" is not callable') |
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92 | 92 | % (hname, funcname)) |
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93 | 93 | |
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94 | 94 | ui.note(_("calling hook %s: %s\n") % (hname, funcname)) |
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95 | 95 | starttime = util.timer() |
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96 | 96 | |
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97 | 97 | try: |
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98 | 98 | r = obj(ui=ui, repo=repo, hooktype=htype, **pycompat.strkwargs(args)) |
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99 | 99 | except Exception as exc: |
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100 | 100 | if isinstance(exc, error.Abort): |
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101 | 101 | ui.warn(_('error: %s hook failed: %s\n') % |
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102 | 102 | (hname, exc.args[0])) |
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103 | 103 | else: |
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104 | 104 | ui.warn(_('error: %s hook raised an exception: ' |
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105 | 105 | '%s\n') % (hname, encoding.strtolocal(str(exc)))) |
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106 | 106 | if throw: |
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107 | 107 | raise |
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108 | 108 | if not ui.tracebackflag: |
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109 | 109 | ui.warn(_('(run with --traceback for stack trace)\n')) |
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110 | 110 | ui.traceback() |
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111 | 111 | return True, True |
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112 | 112 | finally: |
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113 | 113 | duration = util.timer() - starttime |
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114 | 114 | ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n', |
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115 | 115 | htype, funcname, duration) |
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116 | 116 | if r: |
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117 | 117 | if throw: |
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118 | 118 | raise error.HookAbort(_('%s hook failed') % hname) |
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119 | 119 | ui.warn(_('warning: %s hook failed\n') % hname) |
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120 | 120 | return r, False |
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121 | 121 | |
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122 | 122 | def _exthook(ui, repo, htype, name, cmd, args, throw): |
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123 | 123 | starttime = util.timer() |
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124 | 124 | env = {} |
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125 | 125 | |
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126 | 126 | # make in-memory changes visible to external process |
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127 | 127 | if repo is not None: |
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128 | 128 | tr = repo.currenttransaction() |
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129 | 129 | repo.dirstate.write(tr) |
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130 | 130 | if tr and tr.writepending(): |
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131 | 131 | env['HG_PENDING'] = repo.root |
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132 | 132 | env['HG_HOOKTYPE'] = htype |
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133 | 133 | env['HG_HOOKNAME'] = name |
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134 | 134 | |
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135 | 135 | for k, v in args.iteritems(): |
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136 | 136 | if callable(v): |
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137 | 137 | v = v() |
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138 | 138 | if isinstance(v, (dict, list)): |
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139 | 139 | v = stringutil.pprint(v) |
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140 | 140 | env['HG_' + k.upper()] = v |
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141 | 141 | |
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142 | if pycompat.iswindows: | |
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143 | environ = procutil.shellenviron(env) | |
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144 | cmd = util.platform.shelltocmdexe(cmd, environ) | |
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142 | cmd = procutil.shelltonative(cmd, env) | |
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145 | 143 | |
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146 | 144 | ui.note(_("running hook %s: %s\n") % (name, cmd)) |
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147 | 145 | |
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148 | 146 | if repo: |
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149 | 147 | cwd = repo.root |
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150 | 148 | else: |
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151 | 149 | cwd = pycompat.getcwd() |
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152 | 150 | r = ui.system(cmd, environ=env, cwd=cwd, blockedtag='exthook-%s' % (name,)) |
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153 | 151 | |
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154 | 152 | duration = util.timer() - starttime |
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155 | 153 | ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n', |
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156 | 154 | name, cmd, duration) |
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157 | 155 | if r: |
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158 | 156 | desc = procutil.explainexit(r) |
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159 | 157 | if throw: |
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160 | 158 | raise error.HookAbort(_('%s hook %s') % (name, desc)) |
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161 | 159 | ui.warn(_('warning: %s hook %s\n') % (name, desc)) |
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162 | 160 | return r |
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163 | 161 | |
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164 | 162 | # represent an untrusted hook command |
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165 | 163 | _fromuntrusted = object() |
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166 | 164 | |
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167 | 165 | def _allhooks(ui): |
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168 | 166 | """return a list of (hook-id, cmd) pairs sorted by priority""" |
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169 | 167 | hooks = _hookitems(ui) |
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170 | 168 | # Be careful in this section, propagating the real commands from untrusted |
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171 | 169 | # sources would create a security vulnerability, make sure anything altered |
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172 | 170 | # in that section uses "_fromuntrusted" as its command. |
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173 | 171 | untrustedhooks = _hookitems(ui, _untrusted=True) |
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174 | 172 | for name, value in untrustedhooks.items(): |
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175 | 173 | trustedvalue = hooks.get(name, (None, None, name, _fromuntrusted)) |
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176 | 174 | if value != trustedvalue: |
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177 | 175 | (lp, lo, lk, lv) = trustedvalue |
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178 | 176 | hooks[name] = (lp, lo, lk, _fromuntrusted) |
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179 | 177 | # (end of the security sensitive section) |
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180 | 178 | return [(k, v) for p, o, k, v in sorted(hooks.values())] |
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181 | 179 | |
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182 | 180 | def _hookitems(ui, _untrusted=False): |
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183 | 181 | """return all hooks items ready to be sorted""" |
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184 | 182 | hooks = {} |
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185 | 183 | for name, cmd in ui.configitems('hooks', untrusted=_untrusted): |
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186 | 184 | if not name.startswith('priority'): |
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187 | 185 | priority = ui.configint('hooks', 'priority.%s' % name, 0) |
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188 | 186 | hooks[name] = (-priority, len(hooks), name, cmd) |
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189 | 187 | return hooks |
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190 | 188 | |
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191 | 189 | _redirect = False |
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192 | 190 | def redirect(state): |
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193 | 191 | global _redirect |
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194 | 192 | _redirect = state |
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195 | 193 | |
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196 | 194 | def hashook(ui, htype): |
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197 | 195 | """return True if a hook is configured for 'htype'""" |
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198 | 196 | if not ui.callhooks: |
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199 | 197 | return False |
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200 | 198 | for hname, cmd in _allhooks(ui): |
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201 | 199 | if hname.split('.')[0] == htype and cmd: |
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202 | 200 | return True |
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203 | 201 | return False |
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204 | 202 | |
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205 | 203 | def hook(ui, repo, htype, throw=False, **args): |
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206 | 204 | if not ui.callhooks: |
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207 | 205 | return False |
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208 | 206 | |
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209 | 207 | hooks = [] |
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210 | 208 | for hname, cmd in _allhooks(ui): |
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211 | 209 | if hname.split('.')[0] == htype and cmd: |
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212 | 210 | hooks.append((hname, cmd)) |
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213 | 211 | |
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214 | 212 | res = runhooks(ui, repo, htype, hooks, throw=throw, **args) |
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215 | 213 | r = False |
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216 | 214 | for hname, cmd in hooks: |
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217 | 215 | r = res[hname][0] or r |
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218 | 216 | return r |
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219 | 217 | |
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220 | 218 | def runhooks(ui, repo, htype, hooks, throw=False, **args): |
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221 | 219 | args = pycompat.byteskwargs(args) |
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222 | 220 | res = {} |
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223 | 221 | oldstdout = -1 |
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224 | 222 | |
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225 | 223 | try: |
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226 | 224 | for hname, cmd in hooks: |
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227 | 225 | if oldstdout == -1 and _redirect: |
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228 | 226 | try: |
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229 | 227 | stdoutno = procutil.stdout.fileno() |
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230 | 228 | stderrno = procutil.stderr.fileno() |
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231 | 229 | # temporarily redirect stdout to stderr, if possible |
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232 | 230 | if stdoutno >= 0 and stderrno >= 0: |
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233 | 231 | procutil.stdout.flush() |
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234 | 232 | oldstdout = os.dup(stdoutno) |
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235 | 233 | os.dup2(stderrno, stdoutno) |
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236 | 234 | except (OSError, AttributeError): |
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237 | 235 | # files seem to be bogus, give up on redirecting (WSGI, etc) |
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238 | 236 | pass |
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239 | 237 | |
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240 | 238 | if cmd is _fromuntrusted: |
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241 | 239 | if throw: |
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242 | 240 | raise error.HookAbort( |
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243 | 241 | _('untrusted hook %s not executed') % hname, |
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244 | 242 | hint = _("see 'hg help config.trusted'")) |
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245 | 243 | ui.warn(_('warning: untrusted hook %s not executed\n') % hname) |
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246 | 244 | r = 1 |
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247 | 245 | raised = False |
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248 | 246 | elif callable(cmd): |
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249 | 247 | r, raised = pythonhook(ui, repo, htype, hname, cmd, args, |
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250 | 248 | throw) |
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251 | 249 | elif cmd.startswith('python:'): |
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252 | 250 | if cmd.count(':') >= 2: |
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253 | 251 | path, cmd = cmd[7:].rsplit(':', 1) |
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254 | 252 | path = util.expandpath(path) |
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255 | 253 | if repo: |
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256 | 254 | path = os.path.join(repo.root, path) |
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257 | 255 | try: |
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258 | 256 | mod = extensions.loadpath(path, 'hghook.%s' % hname) |
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259 | 257 | except Exception: |
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260 | 258 | ui.write(_("loading %s hook failed:\n") % hname) |
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261 | 259 | raise |
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262 | 260 | hookfn = getattr(mod, cmd) |
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263 | 261 | else: |
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264 | 262 | hookfn = cmd[7:].strip() |
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265 | 263 | r, raised = pythonhook(ui, repo, htype, hname, hookfn, args, |
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266 | 264 | throw) |
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267 | 265 | else: |
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268 | 266 | r = _exthook(ui, repo, htype, hname, cmd, args, throw) |
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269 | 267 | raised = False |
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270 | 268 | |
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271 | 269 | res[hname] = r, raised |
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272 | 270 | finally: |
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273 | 271 | # The stderr is fully buffered on Windows when connected to a pipe. |
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274 | 272 | # A forcible flush is required to make small stderr data in the |
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275 | 273 | # remote side available to the client immediately. |
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276 | 274 | procutil.stderr.flush() |
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277 | 275 | |
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278 | 276 | if _redirect and oldstdout >= 0: |
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279 | 277 | procutil.stdout.flush() # write hook output to stderr fd |
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280 | 278 | os.dup2(oldstdout, stdoutno) |
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281 | 279 | os.close(oldstdout) |
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282 | 280 | |
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283 | 281 | return res |
@@ -1,410 +1,417 b'' | |||
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1 | 1 | # procutil.py - utility for managing processes and executable environment |
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2 | 2 | # |
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3 | 3 | # Copyright 2005 K. Thananchayan <thananck@yahoo.com> |
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4 | 4 | # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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5 | 5 | # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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6 | 6 | # |
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7 | 7 | # This software may be used and distributed according to the terms of the |
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8 | 8 | # GNU General Public License version 2 or any later version. |
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9 | 9 | |
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10 | 10 | from __future__ import absolute_import |
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11 | 11 | |
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12 | 12 | import contextlib |
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13 | 13 | import imp |
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14 | 14 | import io |
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15 | 15 | import os |
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16 | 16 | import signal |
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17 | 17 | import subprocess |
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18 | 18 | import sys |
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19 | 19 | import time |
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20 | 20 | |
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21 | 21 | from ..i18n import _ |
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22 | 22 | |
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23 | 23 | from .. import ( |
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24 | 24 | encoding, |
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25 | 25 | error, |
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26 | 26 | policy, |
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27 | 27 | pycompat, |
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28 | 28 | ) |
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29 | 29 | |
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30 | 30 | osutil = policy.importmod(r'osutil') |
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31 | 31 | |
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32 | 32 | stderr = pycompat.stderr |
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33 | 33 | stdin = pycompat.stdin |
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34 | 34 | stdout = pycompat.stdout |
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35 | 35 | |
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36 | 36 | def isatty(fp): |
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37 | 37 | try: |
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38 | 38 | return fp.isatty() |
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39 | 39 | except AttributeError: |
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40 | 40 | return False |
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41 | 41 | |
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42 | 42 | # glibc determines buffering on first write to stdout - if we replace a TTY |
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43 | 43 | # destined stdout with a pipe destined stdout (e.g. pager), we want line |
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44 | 44 | # buffering (or unbuffered, on Windows) |
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45 | 45 | if isatty(stdout): |
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46 | 46 | if pycompat.iswindows: |
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47 | 47 | # Windows doesn't support line buffering |
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48 | 48 | stdout = os.fdopen(stdout.fileno(), r'wb', 0) |
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49 | 49 | else: |
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50 | 50 | stdout = os.fdopen(stdout.fileno(), r'wb', 1) |
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51 | 51 | |
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52 | 52 | if pycompat.iswindows: |
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53 | 53 | from .. import windows as platform |
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54 | 54 | stdout = platform.winstdout(stdout) |
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55 | 55 | else: |
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56 | 56 | from .. import posix as platform |
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57 | 57 | |
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58 | 58 | findexe = platform.findexe |
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59 | 59 | _gethgcmd = platform.gethgcmd |
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60 | 60 | getuser = platform.getuser |
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61 | 61 | getpid = os.getpid |
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62 | 62 | hidewindow = platform.hidewindow |
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63 | 63 | quotecommand = platform.quotecommand |
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64 | 64 | readpipe = platform.readpipe |
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65 | 65 | setbinary = platform.setbinary |
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66 | 66 | setsignalhandler = platform.setsignalhandler |
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67 | 67 | shellquote = platform.shellquote |
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68 | 68 | shellsplit = platform.shellsplit |
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69 | 69 | spawndetached = platform.spawndetached |
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70 | 70 | sshargs = platform.sshargs |
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71 | 71 | testpid = platform.testpid |
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72 | 72 | |
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73 | 73 | try: |
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74 | 74 | setprocname = osutil.setprocname |
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75 | 75 | except AttributeError: |
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76 | 76 | pass |
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77 | 77 | try: |
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78 | 78 | unblocksignal = osutil.unblocksignal |
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79 | 79 | except AttributeError: |
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80 | 80 | pass |
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81 | 81 | |
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82 | 82 | closefds = pycompat.isposix |
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83 | 83 | |
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84 | 84 | def explainexit(code): |
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85 | 85 | """return a message describing a subprocess status |
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86 | 86 | (codes from kill are negative - not os.system/wait encoding)""" |
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87 | 87 | if code >= 0: |
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88 | 88 | return _("exited with status %d") % code |
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89 | 89 | return _("killed by signal %d") % -code |
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90 | 90 | |
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91 | 91 | class _pfile(object): |
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92 | 92 | """File-like wrapper for a stream opened by subprocess.Popen()""" |
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93 | 93 | |
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94 | 94 | def __init__(self, proc, fp): |
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95 | 95 | self._proc = proc |
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96 | 96 | self._fp = fp |
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97 | 97 | |
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98 | 98 | def close(self): |
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99 | 99 | # unlike os.popen(), this returns an integer in subprocess coding |
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100 | 100 | self._fp.close() |
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101 | 101 | return self._proc.wait() |
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102 | 102 | |
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103 | 103 | def __iter__(self): |
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104 | 104 | return iter(self._fp) |
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105 | 105 | |
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106 | 106 | def __getattr__(self, attr): |
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107 | 107 | return getattr(self._fp, attr) |
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108 | 108 | |
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109 | 109 | def __enter__(self): |
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110 | 110 | return self |
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111 | 111 | |
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112 | 112 | def __exit__(self, exc_type, exc_value, exc_tb): |
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113 | 113 | self.close() |
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114 | 114 | |
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115 | 115 | def popen(cmd, mode='rb', bufsize=-1): |
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116 | 116 | if mode == 'rb': |
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117 | 117 | return _popenreader(cmd, bufsize) |
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118 | 118 | elif mode == 'wb': |
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119 | 119 | return _popenwriter(cmd, bufsize) |
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120 | 120 | raise error.ProgrammingError('unsupported mode: %r' % mode) |
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121 | 121 | |
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122 | 122 | def _popenreader(cmd, bufsize): |
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123 | 123 | p = subprocess.Popen(quotecommand(cmd), shell=True, bufsize=bufsize, |
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124 | 124 | close_fds=closefds, |
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125 | 125 | stdout=subprocess.PIPE) |
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126 | 126 | return _pfile(p, p.stdout) |
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127 | 127 | |
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128 | 128 | def _popenwriter(cmd, bufsize): |
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129 | 129 | p = subprocess.Popen(quotecommand(cmd), shell=True, bufsize=bufsize, |
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130 | 130 | close_fds=closefds, |
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131 | 131 | stdin=subprocess.PIPE) |
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132 | 132 | return _pfile(p, p.stdin) |
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133 | 133 | |
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134 | 134 | def popen2(cmd, env=None): |
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135 | 135 | # Setting bufsize to -1 lets the system decide the buffer size. |
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136 | 136 | # The default for bufsize is 0, meaning unbuffered. This leads to |
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137 | 137 | # poor performance on Mac OS X: http://bugs.python.org/issue4194 |
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138 | 138 | p = subprocess.Popen(cmd, shell=True, bufsize=-1, |
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139 | 139 | close_fds=closefds, |
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140 | 140 | stdin=subprocess.PIPE, stdout=subprocess.PIPE, |
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141 | 141 | env=env) |
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142 | 142 | return p.stdin, p.stdout |
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143 | 143 | |
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144 | 144 | def popen3(cmd, env=None): |
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145 | 145 | stdin, stdout, stderr, p = popen4(cmd, env) |
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146 | 146 | return stdin, stdout, stderr |
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147 | 147 | |
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148 | 148 | def popen4(cmd, env=None, bufsize=-1): |
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149 | 149 | p = subprocess.Popen(cmd, shell=True, bufsize=bufsize, |
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150 | 150 | close_fds=closefds, |
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151 | 151 | stdin=subprocess.PIPE, stdout=subprocess.PIPE, |
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152 | 152 | stderr=subprocess.PIPE, |
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153 | 153 | env=env) |
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154 | 154 | return p.stdin, p.stdout, p.stderr, p |
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155 | 155 | |
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156 | 156 | def pipefilter(s, cmd): |
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157 | 157 | '''filter string S through command CMD, returning its output''' |
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158 | 158 | p = subprocess.Popen(cmd, shell=True, close_fds=closefds, |
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159 | 159 | stdin=subprocess.PIPE, stdout=subprocess.PIPE) |
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160 | 160 | pout, perr = p.communicate(s) |
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161 | 161 | return pout |
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162 | 162 | |
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163 | 163 | def tempfilter(s, cmd): |
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164 | 164 | '''filter string S through a pair of temporary files with CMD. |
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165 | 165 | CMD is used as a template to create the real command to be run, |
|
166 | 166 | with the strings INFILE and OUTFILE replaced by the real names of |
|
167 | 167 | the temporary files generated.''' |
|
168 | 168 | inname, outname = None, None |
|
169 | 169 | try: |
|
170 | 170 | infd, inname = pycompat.mkstemp(prefix='hg-filter-in-') |
|
171 | 171 | fp = os.fdopen(infd, r'wb') |
|
172 | 172 | fp.write(s) |
|
173 | 173 | fp.close() |
|
174 | 174 | outfd, outname = pycompat.mkstemp(prefix='hg-filter-out-') |
|
175 | 175 | os.close(outfd) |
|
176 | 176 | cmd = cmd.replace('INFILE', inname) |
|
177 | 177 | cmd = cmd.replace('OUTFILE', outname) |
|
178 | 178 | code = system(cmd) |
|
179 | 179 | if pycompat.sysplatform == 'OpenVMS' and code & 1: |
|
180 | 180 | code = 0 |
|
181 | 181 | if code: |
|
182 | 182 | raise error.Abort(_("command '%s' failed: %s") % |
|
183 | 183 | (cmd, explainexit(code))) |
|
184 | 184 | with open(outname, 'rb') as fp: |
|
185 | 185 | return fp.read() |
|
186 | 186 | finally: |
|
187 | 187 | try: |
|
188 | 188 | if inname: |
|
189 | 189 | os.unlink(inname) |
|
190 | 190 | except OSError: |
|
191 | 191 | pass |
|
192 | 192 | try: |
|
193 | 193 | if outname: |
|
194 | 194 | os.unlink(outname) |
|
195 | 195 | except OSError: |
|
196 | 196 | pass |
|
197 | 197 | |
|
198 | 198 | _filtertable = { |
|
199 | 199 | 'tempfile:': tempfilter, |
|
200 | 200 | 'pipe:': pipefilter, |
|
201 | 201 | } |
|
202 | 202 | |
|
203 | 203 | def filter(s, cmd): |
|
204 | 204 | "filter a string through a command that transforms its input to its output" |
|
205 | 205 | for name, fn in _filtertable.iteritems(): |
|
206 | 206 | if cmd.startswith(name): |
|
207 | 207 | return fn(s, cmd[len(name):].lstrip()) |
|
208 | 208 | return pipefilter(s, cmd) |
|
209 | 209 | |
|
210 | 210 | def mainfrozen(): |
|
211 | 211 | """return True if we are a frozen executable. |
|
212 | 212 | |
|
213 | 213 | The code supports py2exe (most common, Windows only) and tools/freeze |
|
214 | 214 | (portable, not much used). |
|
215 | 215 | """ |
|
216 | 216 | return (pycompat.safehasattr(sys, "frozen") or # new py2exe |
|
217 | 217 | pycompat.safehasattr(sys, "importers") or # old py2exe |
|
218 | 218 | imp.is_frozen(u"__main__")) # tools/freeze |
|
219 | 219 | |
|
220 | 220 | _hgexecutable = None |
|
221 | 221 | |
|
222 | 222 | def hgexecutable(): |
|
223 | 223 | """return location of the 'hg' executable. |
|
224 | 224 | |
|
225 | 225 | Defaults to $HG or 'hg' in the search path. |
|
226 | 226 | """ |
|
227 | 227 | if _hgexecutable is None: |
|
228 | 228 | hg = encoding.environ.get('HG') |
|
229 | 229 | mainmod = sys.modules[r'__main__'] |
|
230 | 230 | if hg: |
|
231 | 231 | _sethgexecutable(hg) |
|
232 | 232 | elif mainfrozen(): |
|
233 | 233 | if getattr(sys, 'frozen', None) == 'macosx_app': |
|
234 | 234 | # Env variable set by py2app |
|
235 | 235 | _sethgexecutable(encoding.environ['EXECUTABLEPATH']) |
|
236 | 236 | else: |
|
237 | 237 | _sethgexecutable(pycompat.sysexecutable) |
|
238 | 238 | elif (os.path.basename( |
|
239 | 239 | pycompat.fsencode(getattr(mainmod, '__file__', ''))) == 'hg'): |
|
240 | 240 | _sethgexecutable(pycompat.fsencode(mainmod.__file__)) |
|
241 | 241 | else: |
|
242 | 242 | exe = findexe('hg') or os.path.basename(sys.argv[0]) |
|
243 | 243 | _sethgexecutable(exe) |
|
244 | 244 | return _hgexecutable |
|
245 | 245 | |
|
246 | 246 | def _sethgexecutable(path): |
|
247 | 247 | """set location of the 'hg' executable""" |
|
248 | 248 | global _hgexecutable |
|
249 | 249 | _hgexecutable = path |
|
250 | 250 | |
|
251 | 251 | def _testfileno(f, stdf): |
|
252 | 252 | fileno = getattr(f, 'fileno', None) |
|
253 | 253 | try: |
|
254 | 254 | return fileno and fileno() == stdf.fileno() |
|
255 | 255 | except io.UnsupportedOperation: |
|
256 | 256 | return False # fileno() raised UnsupportedOperation |
|
257 | 257 | |
|
258 | 258 | def isstdin(f): |
|
259 | 259 | return _testfileno(f, sys.__stdin__) |
|
260 | 260 | |
|
261 | 261 | def isstdout(f): |
|
262 | 262 | return _testfileno(f, sys.__stdout__) |
|
263 | 263 | |
|
264 | 264 | def protectstdio(uin, uout): |
|
265 | 265 | """Duplicate streams and redirect original if (uin, uout) are stdio |
|
266 | 266 | |
|
267 | 267 | If uin is stdin, it's redirected to /dev/null. If uout is stdout, it's |
|
268 | 268 | redirected to stderr so the output is still readable. |
|
269 | 269 | |
|
270 | 270 | Returns (fin, fout) which point to the original (uin, uout) fds, but |
|
271 | 271 | may be copy of (uin, uout). The returned streams can be considered |
|
272 | 272 | "owned" in that print(), exec(), etc. never reach to them. |
|
273 | 273 | """ |
|
274 | 274 | uout.flush() |
|
275 | 275 | fin, fout = uin, uout |
|
276 | 276 | if uin is stdin: |
|
277 | 277 | newfd = os.dup(uin.fileno()) |
|
278 | 278 | nullfd = os.open(os.devnull, os.O_RDONLY) |
|
279 | 279 | os.dup2(nullfd, uin.fileno()) |
|
280 | 280 | os.close(nullfd) |
|
281 | 281 | fin = os.fdopen(newfd, r'rb') |
|
282 | 282 | if uout is stdout: |
|
283 | 283 | newfd = os.dup(uout.fileno()) |
|
284 | 284 | os.dup2(stderr.fileno(), uout.fileno()) |
|
285 | 285 | fout = os.fdopen(newfd, r'wb') |
|
286 | 286 | return fin, fout |
|
287 | 287 | |
|
288 | 288 | def restorestdio(uin, uout, fin, fout): |
|
289 | 289 | """Restore (uin, uout) streams from possibly duplicated (fin, fout)""" |
|
290 | 290 | uout.flush() |
|
291 | 291 | for f, uif in [(fin, uin), (fout, uout)]: |
|
292 | 292 | if f is not uif: |
|
293 | 293 | os.dup2(f.fileno(), uif.fileno()) |
|
294 | 294 | f.close() |
|
295 | 295 | |
|
296 | 296 | @contextlib.contextmanager |
|
297 | 297 | def protectedstdio(uin, uout): |
|
298 | 298 | """Run code block with protected standard streams""" |
|
299 | 299 | fin, fout = protectstdio(uin, uout) |
|
300 | 300 | try: |
|
301 | 301 | yield fin, fout |
|
302 | 302 | finally: |
|
303 | 303 | restorestdio(uin, uout, fin, fout) |
|
304 | 304 | |
|
305 | 305 | def shellenviron(environ=None): |
|
306 | 306 | """return environ with optional override, useful for shelling out""" |
|
307 | 307 | def py2shell(val): |
|
308 | 308 | 'convert python object into string that is useful to shell' |
|
309 | 309 | if val is None or val is False: |
|
310 | 310 | return '0' |
|
311 | 311 | if val is True: |
|
312 | 312 | return '1' |
|
313 | 313 | return pycompat.bytestr(val) |
|
314 | 314 | env = dict(encoding.environ) |
|
315 | 315 | if environ: |
|
316 | 316 | env.update((k, py2shell(v)) for k, v in environ.iteritems()) |
|
317 | 317 | env['HG'] = hgexecutable() |
|
318 | 318 | return env |
|
319 | 319 | |
|
320 | if pycompat.iswindows: | |
|
321 | def shelltonative(cmd, env): | |
|
322 | return platform.shelltocmdexe(cmd, shellenviron(env)) | |
|
323 | else: | |
|
324 | def shelltonative(cmd, env): | |
|
325 | return cmd | |
|
326 | ||
|
320 | 327 | def system(cmd, environ=None, cwd=None, out=None): |
|
321 | 328 | '''enhanced shell command execution. |
|
322 | 329 | run with environment maybe modified, maybe in different dir. |
|
323 | 330 | |
|
324 | 331 | if out is specified, it is assumed to be a file-like object that has a |
|
325 | 332 | write() method. stdout and stderr will be redirected to out.''' |
|
326 | 333 | try: |
|
327 | 334 | stdout.flush() |
|
328 | 335 | except Exception: |
|
329 | 336 | pass |
|
330 | 337 | cmd = quotecommand(cmd) |
|
331 | 338 | env = shellenviron(environ) |
|
332 | 339 | if out is None or isstdout(out): |
|
333 | 340 | rc = subprocess.call(cmd, shell=True, close_fds=closefds, |
|
334 | 341 | env=env, cwd=cwd) |
|
335 | 342 | else: |
|
336 | 343 | proc = subprocess.Popen(cmd, shell=True, close_fds=closefds, |
|
337 | 344 | env=env, cwd=cwd, stdout=subprocess.PIPE, |
|
338 | 345 | stderr=subprocess.STDOUT) |
|
339 | 346 | for line in iter(proc.stdout.readline, ''): |
|
340 | 347 | out.write(line) |
|
341 | 348 | proc.wait() |
|
342 | 349 | rc = proc.returncode |
|
343 | 350 | if pycompat.sysplatform == 'OpenVMS' and rc & 1: |
|
344 | 351 | rc = 0 |
|
345 | 352 | return rc |
|
346 | 353 | |
|
347 | 354 | def gui(): |
|
348 | 355 | '''Are we running in a GUI?''' |
|
349 | 356 | if pycompat.isdarwin: |
|
350 | 357 | if 'SSH_CONNECTION' in encoding.environ: |
|
351 | 358 | # handle SSH access to a box where the user is logged in |
|
352 | 359 | return False |
|
353 | 360 | elif getattr(osutil, 'isgui', None): |
|
354 | 361 | # check if a CoreGraphics session is available |
|
355 | 362 | return osutil.isgui() |
|
356 | 363 | else: |
|
357 | 364 | # pure build; use a safe default |
|
358 | 365 | return True |
|
359 | 366 | else: |
|
360 | 367 | return pycompat.iswindows or encoding.environ.get("DISPLAY") |
|
361 | 368 | |
|
362 | 369 | def hgcmd(): |
|
363 | 370 | """Return the command used to execute current hg |
|
364 | 371 | |
|
365 | 372 | This is different from hgexecutable() because on Windows we want |
|
366 | 373 | to avoid things opening new shell windows like batch files, so we |
|
367 | 374 | get either the python call or current executable. |
|
368 | 375 | """ |
|
369 | 376 | if mainfrozen(): |
|
370 | 377 | if getattr(sys, 'frozen', None) == 'macosx_app': |
|
371 | 378 | # Env variable set by py2app |
|
372 | 379 | return [encoding.environ['EXECUTABLEPATH']] |
|
373 | 380 | else: |
|
374 | 381 | return [pycompat.sysexecutable] |
|
375 | 382 | return _gethgcmd() |
|
376 | 383 | |
|
377 | 384 | def rundetached(args, condfn): |
|
378 | 385 | """Execute the argument list in a detached process. |
|
379 | 386 | |
|
380 | 387 | condfn is a callable which is called repeatedly and should return |
|
381 | 388 | True once the child process is known to have started successfully. |
|
382 | 389 | At this point, the child process PID is returned. If the child |
|
383 | 390 | process fails to start or finishes before condfn() evaluates to |
|
384 | 391 | True, return -1. |
|
385 | 392 | """ |
|
386 | 393 | # Windows case is easier because the child process is either |
|
387 | 394 | # successfully starting and validating the condition or exiting |
|
388 | 395 | # on failure. We just poll on its PID. On Unix, if the child |
|
389 | 396 | # process fails to start, it will be left in a zombie state until |
|
390 | 397 | # the parent wait on it, which we cannot do since we expect a long |
|
391 | 398 | # running process on success. Instead we listen for SIGCHLD telling |
|
392 | 399 | # us our child process terminated. |
|
393 | 400 | terminated = set() |
|
394 | 401 | def handler(signum, frame): |
|
395 | 402 | terminated.add(os.wait()) |
|
396 | 403 | prevhandler = None |
|
397 | 404 | SIGCHLD = getattr(signal, 'SIGCHLD', None) |
|
398 | 405 | if SIGCHLD is not None: |
|
399 | 406 | prevhandler = signal.signal(SIGCHLD, handler) |
|
400 | 407 | try: |
|
401 | 408 | pid = spawndetached(args) |
|
402 | 409 | while not condfn(): |
|
403 | 410 | if ((pid in terminated or not testpid(pid)) |
|
404 | 411 | and not condfn()): |
|
405 | 412 | return -1 |
|
406 | 413 | time.sleep(0.1) |
|
407 | 414 | return pid |
|
408 | 415 | finally: |
|
409 | 416 | if prevhandler is not None: |
|
410 | 417 | signal.signal(signal.SIGCHLD, prevhandler) |
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