Show More
@@ -1,226 +1,228 b'' | |||
|
1 | 1 | # hook.py - hook support for mercurial |
|
2 | 2 | # |
|
3 | 3 | # Copyright 2007 Matt Mackall <mpm@selenic.com> |
|
4 | 4 | # |
|
5 | 5 | # This software may be used and distributed according to the terms of the |
|
6 | 6 | # GNU General Public License version 2 or any later version. |
|
7 | 7 | |
|
8 | 8 | from __future__ import absolute_import |
|
9 | 9 | |
|
10 | 10 | import os |
|
11 | 11 | import sys |
|
12 | 12 | import time |
|
13 | 13 | |
|
14 | 14 | from .i18n import _ |
|
15 | 15 | from . import ( |
|
16 | 16 | demandimport, |
|
17 | 17 | error, |
|
18 | 18 | extensions, |
|
19 | 19 | util, |
|
20 | 20 | ) |
|
21 | 21 | |
|
22 | 22 | def _pythonhook(ui, repo, name, hname, funcname, args, throw): |
|
23 | 23 | '''call python hook. hook is callable object, looked up as |
|
24 | 24 | name in python module. if callable returns "true", hook |
|
25 | 25 | fails, else passes. if hook raises exception, treated as |
|
26 | 26 | hook failure. exception propagates if throw is "true". |
|
27 | 27 | |
|
28 | 28 | reason for "true" meaning "hook failed" is so that |
|
29 | 29 | unmodified commands (e.g. mercurial.commands.update) can |
|
30 | 30 | be run as hooks without wrappers to convert return values.''' |
|
31 | 31 | |
|
32 | 32 | if callable(funcname): |
|
33 | 33 | obj = funcname |
|
34 | 34 | funcname = obj.__module__ + "." + obj.__name__ |
|
35 | 35 | else: |
|
36 | 36 | d = funcname.rfind('.') |
|
37 | 37 | if d == -1: |
|
38 | 38 | raise error.HookLoadError( |
|
39 | 39 | _('%s hook is invalid ("%s" not in a module)') |
|
40 | 40 | % (hname, funcname)) |
|
41 | 41 | modname = funcname[:d] |
|
42 | 42 | oldpaths = sys.path |
|
43 | 43 | if util.mainfrozen(): |
|
44 | 44 | # binary installs require sys.path manipulation |
|
45 | 45 | modpath, modfile = os.path.split(modname) |
|
46 | 46 | if modpath and modfile: |
|
47 | 47 | sys.path = sys.path[:] + [modpath] |
|
48 | 48 | modname = modfile |
|
49 | 49 | with demandimport.deactivated(): |
|
50 | 50 | try: |
|
51 | 51 | obj = __import__(modname) |
|
52 | 52 | except ImportError: |
|
53 | 53 | e1 = sys.exc_type, sys.exc_value, sys.exc_traceback |
|
54 | 54 | try: |
|
55 | 55 | # extensions are loaded with hgext_ prefix |
|
56 | 56 | obj = __import__("hgext_%s" % modname) |
|
57 | 57 | except ImportError: |
|
58 | 58 | e2 = sys.exc_type, sys.exc_value, sys.exc_traceback |
|
59 | 59 | if ui.tracebackflag: |
|
60 | 60 | ui.warn(_('exception from first failed import ' |
|
61 | 61 | 'attempt:\n')) |
|
62 | 62 | ui.traceback(e1) |
|
63 | 63 | if ui.tracebackflag: |
|
64 | 64 | ui.warn(_('exception from second failed import ' |
|
65 | 65 | 'attempt:\n')) |
|
66 | 66 | ui.traceback(e2) |
|
67 | 67 | raise error.HookLoadError( |
|
68 | 68 | _('%s hook is invalid (import of "%s" failed)') % |
|
69 | 69 | (hname, modname)) |
|
70 | 70 | sys.path = oldpaths |
|
71 | 71 | try: |
|
72 | 72 | for p in funcname.split('.')[1:]: |
|
73 | 73 | obj = getattr(obj, p) |
|
74 | 74 | except AttributeError: |
|
75 | 75 | raise error.HookLoadError( |
|
76 | 76 | _('%s hook is invalid ("%s" is not defined)') |
|
77 | 77 | % (hname, funcname)) |
|
78 | 78 | if not callable(obj): |
|
79 | 79 | raise error.HookLoadError( |
|
80 | 80 | _('%s hook is invalid ("%s" is not callable)') |
|
81 | 81 | % (hname, funcname)) |
|
82 | 82 | |
|
83 | 83 | ui.note(_("calling hook %s: %s\n") % (hname, funcname)) |
|
84 | 84 | starttime = time.time() |
|
85 | 85 | |
|
86 | 86 | try: |
|
87 | 87 | # redirect IO descriptors to the ui descriptors so hooks |
|
88 | 88 | # that write directly to these don't mess up the command |
|
89 | 89 | # protocol when running through the command server |
|
90 | 90 | old = sys.stdout, sys.stderr, sys.stdin |
|
91 | 91 | sys.stdout, sys.stderr, sys.stdin = ui.fout, ui.ferr, ui.fin |
|
92 | 92 | |
|
93 | 93 | r = obj(ui=ui, repo=repo, hooktype=name, **args) |
|
94 | 94 | except Exception as exc: |
|
95 | 95 | if isinstance(exc, error.Abort): |
|
96 | 96 | ui.warn(_('error: %s hook failed: %s\n') % |
|
97 | 97 | (hname, exc.args[0])) |
|
98 | 98 | else: |
|
99 | 99 | ui.warn(_('error: %s hook raised an exception: ' |
|
100 | 100 | '%s\n') % (hname, exc)) |
|
101 | 101 | if throw: |
|
102 | 102 | raise |
|
103 | 103 | ui.traceback() |
|
104 | return True | |
|
104 | return True, True | |
|
105 | 105 | finally: |
|
106 | 106 | sys.stdout, sys.stderr, sys.stdin = old |
|
107 | 107 | duration = time.time() - starttime |
|
108 | 108 | ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n', |
|
109 | 109 | name, funcname, duration) |
|
110 | 110 | if r: |
|
111 | 111 | if throw: |
|
112 | 112 | raise error.HookAbort(_('%s hook failed') % hname) |
|
113 | 113 | ui.warn(_('warning: %s hook failed\n') % hname) |
|
114 | return r | |
|
114 | return r, False | |
|
115 | 115 | |
|
116 | 116 | def _exthook(ui, repo, name, cmd, args, throw): |
|
117 | 117 | ui.note(_("running hook %s: %s\n") % (name, cmd)) |
|
118 | 118 | |
|
119 | 119 | starttime = time.time() |
|
120 | 120 | env = {} |
|
121 | 121 | for k, v in args.iteritems(): |
|
122 | 122 | if callable(v): |
|
123 | 123 | v = v() |
|
124 | 124 | if isinstance(v, dict): |
|
125 | 125 | # make the dictionary element order stable across Python |
|
126 | 126 | # implementations |
|
127 | 127 | v = ('{' + |
|
128 | 128 | ', '.join('%r: %r' % i for i in sorted(v.iteritems())) + |
|
129 | 129 | '}') |
|
130 | 130 | env['HG_' + k.upper()] = v |
|
131 | 131 | |
|
132 | 132 | if repo: |
|
133 | 133 | cwd = repo.root |
|
134 | 134 | else: |
|
135 | 135 | cwd = os.getcwd() |
|
136 | 136 | r = ui.system(cmd, environ=env, cwd=cwd) |
|
137 | 137 | |
|
138 | 138 | duration = time.time() - starttime |
|
139 | 139 | ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n', |
|
140 | 140 | name, cmd, duration) |
|
141 | 141 | if r: |
|
142 | 142 | desc, r = util.explainexit(r) |
|
143 | 143 | if throw: |
|
144 | 144 | raise error.HookAbort(_('%s hook %s') % (name, desc)) |
|
145 | 145 | ui.warn(_('warning: %s hook %s\n') % (name, desc)) |
|
146 | 146 | return r |
|
147 | 147 | |
|
148 | 148 | def _allhooks(ui): |
|
149 | 149 | hooks = [] |
|
150 | 150 | for name, cmd in ui.configitems('hooks'): |
|
151 | 151 | if not name.startswith('priority'): |
|
152 | 152 | priority = ui.configint('hooks', 'priority.%s' % name, 0) |
|
153 | 153 | hooks.append((-priority, len(hooks), name, cmd)) |
|
154 | 154 | return [(k, v) for p, o, k, v in sorted(hooks)] |
|
155 | 155 | |
|
156 | 156 | _redirect = False |
|
157 | 157 | def redirect(state): |
|
158 | 158 | global _redirect |
|
159 | 159 | _redirect = state |
|
160 | 160 | |
|
161 | 161 | def hook(ui, repo, name, throw=False, **args): |
|
162 | 162 | if not ui.callhooks: |
|
163 | 163 | return False |
|
164 | 164 | |
|
165 | 165 | hooks = [] |
|
166 | 166 | for hname, cmd in _allhooks(ui): |
|
167 | 167 | if hname.split('.')[0] == name and cmd: |
|
168 | 168 | hooks.append((hname, cmd)) |
|
169 | 169 | |
|
170 | 170 | res = runhooks(ui, repo, name, hooks, throw=throw, **args) |
|
171 | 171 | r = False |
|
172 | 172 | for hname, cmd in hooks: |
|
173 | r = res[hname] or r | |
|
173 | r = res[hname][0] or r | |
|
174 | 174 | return r |
|
175 | 175 | |
|
176 | 176 | def runhooks(ui, repo, name, hooks, throw=False, **args): |
|
177 | 177 | res = {} |
|
178 | 178 | oldstdout = -1 |
|
179 | 179 | |
|
180 | 180 | try: |
|
181 | 181 | for hname, cmd in hooks: |
|
182 | 182 | if oldstdout == -1 and _redirect: |
|
183 | 183 | try: |
|
184 | 184 | stdoutno = sys.__stdout__.fileno() |
|
185 | 185 | stderrno = sys.__stderr__.fileno() |
|
186 | 186 | # temporarily redirect stdout to stderr, if possible |
|
187 | 187 | if stdoutno >= 0 and stderrno >= 0: |
|
188 | 188 | sys.__stdout__.flush() |
|
189 | 189 | oldstdout = os.dup(stdoutno) |
|
190 | 190 | os.dup2(stderrno, stdoutno) |
|
191 | 191 | except (OSError, AttributeError): |
|
192 | 192 | # files seem to be bogus, give up on redirecting (WSGI, etc) |
|
193 | 193 | pass |
|
194 | 194 | |
|
195 | 195 | if callable(cmd): |
|
196 | r = _pythonhook(ui, repo, name, hname, cmd, args, throw) | |
|
196 | r, raised = _pythonhook(ui, repo, name, hname, cmd, args, throw) | |
|
197 | 197 | elif cmd.startswith('python:'): |
|
198 | 198 | if cmd.count(':') >= 2: |
|
199 | 199 | path, cmd = cmd[7:].rsplit(':', 1) |
|
200 | 200 | path = util.expandpath(path) |
|
201 | 201 | if repo: |
|
202 | 202 | path = os.path.join(repo.root, path) |
|
203 | 203 | try: |
|
204 | 204 | mod = extensions.loadpath(path, 'hghook.%s' % hname) |
|
205 | 205 | except Exception: |
|
206 | 206 | ui.write(_("loading %s hook failed:\n") % hname) |
|
207 | 207 | raise |
|
208 | 208 | hookfn = getattr(mod, cmd) |
|
209 | 209 | else: |
|
210 | 210 | hookfn = cmd[7:].strip() |
|
211 |
r = _pythonhook(ui, repo, name, hname, hookfn, args, |
|
|
211 | r, raised = _pythonhook(ui, repo, name, hname, hookfn, args, | |
|
212 | throw) | |
|
212 | 213 | else: |
|
213 | 214 | r = _exthook(ui, repo, hname, cmd, args, throw) |
|
215 | raised = False | |
|
214 | 216 | |
|
215 | res[hname] = r | |
|
217 | res[hname] = r, raised | |
|
216 | 218 | |
|
217 | 219 | # The stderr is fully buffered on Windows when connected to a pipe. |
|
218 | 220 | # A forcible flush is required to make small stderr data in the |
|
219 | 221 | # remote side available to the client immediately. |
|
220 | 222 | sys.stderr.flush() |
|
221 | 223 | finally: |
|
222 | 224 | if _redirect and oldstdout >= 0: |
|
223 | 225 | os.dup2(oldstdout, stdoutno) |
|
224 | 226 | os.close(oldstdout) |
|
225 | 227 | |
|
226 | 228 | return res |
General Comments 0
You need to be logged in to leave comments.
Login now