Source

MacHg / LocalMercurial / mercurial / ui.py

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
# ui.py - user interface bits for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from i18n import _
import errno, getpass, os, socket, sys, tempfile, traceback
import config, util, error

_booleans = {'1': True, 'yes': True, 'true': True, 'on': True,
             '0': False, 'no': False, 'false': False, 'off': False}

class ui(object):
    def __init__(self, src=None):
        self._buffers = []
        self.quiet = self.verbose = self.debugflag = self.tracebackflag = False
        self._reportuntrusted = True
        self._ocfg = config.config() # overlay
        self._tcfg = config.config() # trusted
        self._ucfg = config.config() # untrusted
        self._trustusers = set()
        self._trustgroups = set()

        if src:
            self._tcfg = src._tcfg.copy()
            self._ucfg = src._ucfg.copy()
            self._ocfg = src._ocfg.copy()
            self._trustusers = src._trustusers.copy()
            self._trustgroups = src._trustgroups.copy()
            self.environ = src.environ
            self.fixconfig()
        else:
            # shared read-only environment
            self.environ = os.environ
            # we always trust global config files
            for f in util.rcpath():
                self.readconfig(f, trust=True)

    def copy(self):
        return self.__class__(self)

    def _is_trusted(self, fp, f):
        st = util.fstat(fp)
        if util.isowner(st):
            return True

        tusers, tgroups = self._trustusers, self._trustgroups
        if '*' in tusers or '*' in tgroups:
            return True

        user = util.username(st.st_uid)
        group = util.groupname(st.st_gid)
        if user in tusers or group in tgroups or user == util.username():
            return True

        if self._reportuntrusted:
            self.warn(_('Not trusting file %s from untrusted '
                        'user %s, group %s\n') % (f, user, group))
        return False

    def readconfig(self, filename, root=None, trust=False,
                   sections=None, remap=None):
        try:
            fp = open(filename)
        except IOError:
            if not sections: # ignore unless we were looking for something
                return
            raise

        cfg = config.config()
        trusted = sections or trust or self._is_trusted(fp, filename)

        try:
            cfg.read(filename, fp, sections=sections, remap=remap)
        except error.ConfigError, inst:
            if trusted:
                raise
            self.warn(_("Ignored: %s\n") % str(inst))

        if self.plain():
            for k in ('debug', 'fallbackencoding', 'quiet', 'slash',
                      'logtemplate', 'style',
                      'traceback', 'verbose'):
                if k in cfg['ui']:
                    del cfg['ui'][k]
            for k, v in cfg.items('alias'):
                del cfg['alias'][k]
            for k, v in cfg.items('defaults'):
                del cfg['defaults'][k]

        if trusted:
            self._tcfg.update(cfg)
            self._tcfg.update(self._ocfg)
        self._ucfg.update(cfg)
        self._ucfg.update(self._ocfg)

        if root is None:
            root = os.path.expanduser('~')
        self.fixconfig(root=root)

    def fixconfig(self, root=None):
        # translate paths relative to root (or home) into absolute paths
        root = root or os.getcwd()
        for c in self._tcfg, self._ucfg, self._ocfg:
            for n, p in c.items('paths'):
                if p and "://" not in p and not os.path.isabs(p):
                    c.set("paths", n, os.path.normpath(os.path.join(root, p)))

        # update ui options
        self.debugflag = self.configbool('ui', 'debug')
        self.verbose = self.debugflag or self.configbool('ui', 'verbose')
        self.quiet = not self.debugflag and self.configbool('ui', 'quiet')
        if self.verbose and self.quiet:
            self.quiet = self.verbose = False
        self._reportuntrusted = self.configbool("ui", "report_untrusted", True)
        self.tracebackflag = self.configbool('ui', 'traceback', False)

        # update trust information
        self._trustusers.update(self.configlist('trusted', 'users'))
        self._trustgroups.update(self.configlist('trusted', 'groups'))

    def setconfig(self, section, name, value):
        for cfg in (self._ocfg, self._tcfg, self._ucfg):
            cfg.set(section, name, value)
        self.fixconfig()

    def _data(self, untrusted):
        return untrusted and self._ucfg or self._tcfg

    def configsource(self, section, name, untrusted=False):
        return self._data(untrusted).source(section, name) or 'none'

    def config(self, section, name, default=None, untrusted=False):
        value = self._data(untrusted).get(section, name, default)
        if self.debugflag and not untrusted and self._reportuntrusted:
            uvalue = self._ucfg.get(section, name)
            if uvalue is not None and uvalue != value:
                self.debug(_("ignoring untrusted configuration option "
                             "%s.%s = %s\n") % (section, name, uvalue))
        return value

    def configbool(self, section, name, default=False, untrusted=False):
        v = self.config(section, name, None, untrusted)
        if v is None:
            return default
        if isinstance(v, bool):
            return v
        if v.lower() not in _booleans:
            raise error.ConfigError(_("%s.%s not a boolean ('%s')")
                                    % (section, name, v))
        return _booleans[v.lower()]

    def configlist(self, section, name, default=None, untrusted=False):
        """Return a list of comma/space separated strings"""
        result = self.config(section, name, untrusted=untrusted)
        if result is None:
            result = default or []
        if isinstance(result, basestring):
            result = result.replace(",", " ").split()
        return result

    def has_section(self, section, untrusted=False):
        '''tell whether section exists in config.'''
        return section in self._data(untrusted)

    def configitems(self, section, untrusted=False):
        items = self._data(untrusted).items(section)
        if self.debugflag and not untrusted and self._reportuntrusted:
            for k, v in self._ucfg.items(section):
                if self._tcfg.get(section, k) != v:
                    self.debug(_("ignoring untrusted configuration option "
                                "%s.%s = %s\n") % (section, k, v))
        return items

    def walkconfig(self, untrusted=False):
        cfg = self._data(untrusted)
        for section in cfg.sections():
            for name, value in self.configitems(section, untrusted):
                yield section, name, str(value).replace('\n', '\\n')

    def plain(self):
        return 'HGPLAIN' in os.environ

    def username(self):
        """Return default username to be used in commits.

        Searched in this order: $HGUSER, [ui] section of hgrcs, $EMAIL
        and stop searching if one of these is set.
        If not found and ui.askusername is True, ask the user, else use
        ($LOGNAME or $USER or $LNAME or $USERNAME) + "@full.hostname".
        """
        user = os.environ.get("HGUSER")
        if user is None:
            user = self.config("ui", "username")
        if user is None:
            user = os.environ.get("EMAIL")
        if user is None and self.configbool("ui", "askusername"):
            user = self.prompt(_("enter a commit username:"), default=None)
        if user is None and not self.interactive():
            try:
                user = '%s@%s' % (util.getuser(), socket.getfqdn())
                self.warn(_("No username found, using '%s' instead\n") % user)
            except KeyError:
                pass
        if not user:
            raise util.Abort(_('no username supplied (see "hg help config")'))
        if "\n" in user:
            raise util.Abort(_("username %s contains a newline\n") % repr(user))
        return user

    def shortuser(self, user):
        """Return a short representation of a user name or email address."""
        if not self.verbose:
            user = util.shortuser(user)
        return user

    def _path(self, loc):
        p = self.config('paths', loc)
        if p:
            if '%%' in p:
                self.warn("(deprecated '%%' in path %s=%s from %s)\n" %
                          (loc, p, self.configsource('paths', loc)))
                p = p.replace('%%', '%')
            p = util.expandpath(p)
        return p

    def expandpath(self, loc, default=None):
        """Return repository location relative to cwd or from [paths]"""
        if "://" in loc or os.path.isdir(os.path.join(loc, '.hg')):
            return loc

        path = self._path(loc)
        if not path and default is not None:
            path = self._path(default)
        return path or loc

    def pushbuffer(self):
        self._buffers.append([])

    def popbuffer(self):
        return "".join(self._buffers.pop())

    def write(self, *args):
        if self._buffers:
            self._buffers[-1].extend([str(a) for a in args])
        else:
            for a in args:
                sys.stdout.write(str(a))

    def write_err(self, *args):
        try:
            if not getattr(sys.stdout, 'closed', False):
                sys.stdout.flush()
            for a in args:
                sys.stderr.write(str(a))
            # stderr may be buffered under win32 when redirected to files,
            # including stdout.
            if not getattr(sys.stderr, 'closed', False):
                sys.stderr.flush()
        except IOError, inst:
            if inst.errno != errno.EPIPE:
                raise

    def flush(self):
        try: sys.stdout.flush()
        except: pass
        try: sys.stderr.flush()
        except: pass

    def interactive(self):
        i = self.configbool("ui", "interactive", None)
        if i is None:
            try:
                return sys.stdin.isatty()
            except AttributeError:
                # some environments replace stdin without implementing isatty
                # usually those are non-interactive
                return False

        return i

    def _readline(self, prompt=''):
        if sys.stdin.isatty():
            try:
                # magically add command line editing support, where
                # available
                import readline
                # force demandimport to really load the module
                readline.read_history_file
                # windows sometimes raises something other than ImportError
            except Exception:
                pass
        line = raw_input(prompt)
        # When stdin is in binary mode on Windows, it can cause
        # raw_input() to emit an extra trailing carriage return
        if os.linesep == '\r\n' and line and line[-1] == '\r':
            line = line[:-1]
        return line

    def prompt(self, msg, default="y"):
        """Prompt user with msg, read response.
        If ui is not interactive, the default is returned.
        """
        if not self.interactive():
            self.write(msg, ' ', default, "\n")
            return default
        try:
            r = self._readline(msg + ' ')
            if not r:
                return default
            return r
        except EOFError:
            raise util.Abort(_('response expected'))

    def promptchoice(self, msg, choices, default=0):
        """Prompt user with msg, read response, and ensure it matches
        one of the provided choices. The index of the choice is returned.
        choices is a sequence of acceptable responses with the format:
        ('&None', 'E&xec', 'Sym&link') Responses are case insensitive.
        If ui is not interactive, the default is returned.
        """
        resps = [s[s.index('&')+1].lower() for s in choices]
        while True:
            r = self.prompt(msg, resps[default])
            if r.lower() in resps:
                return resps.index(r.lower())
            self.write(_("unrecognized response\n"))

    def getpass(self, prompt=None, default=None):
        if not self.interactive():
            return default
        try:
            return getpass.getpass(prompt or _('password: '))
        except EOFError:
            raise util.Abort(_('response expected'))
    def status(self, *msg):
        if not self.quiet:
            self.write(*msg)
    def warn(self, *msg):
        self.write_err(*msg)
    def note(self, *msg):
        if self.verbose:
            self.write(*msg)
    def debug(self, *msg):
        if self.debugflag:
            self.write(*msg)
    def edit(self, text, user):
        (fd, name) = tempfile.mkstemp(prefix="hg-editor-", suffix=".txt",
                                      text=True)
        try:
            f = os.fdopen(fd, "w")
            f.write(text)
            f.close()

            editor = self.geteditor()

            util.system("%s \"%s\"" % (editor, name),
                        environ={'HGUSER': user},
                        onerr=util.Abort, errprefix=_("edit failed"))

            f = open(name)
            t = f.read()
            f.close()
        finally:
            os.unlink(name)

        return t

    def traceback(self, exc=None):
        '''print exception traceback if traceback printing enabled.
        only to call in exception handler. returns true if traceback
        printed.'''
        if self.tracebackflag:
            if exc:
                traceback.print_exception(exc[0], exc[1], exc[2])
            else:
                traceback.print_exc()
        return self.tracebackflag

    def geteditor(self):
        '''return editor to use'''
        return (os.environ.get("HGEDITOR") or
                self.config("ui", "editor") or
                os.environ.get("VISUAL") or
                os.environ.get("EDITOR", "vi"))

    def progress(self, topic, pos, item="", unit="", total=None):
        '''show a progress message

        With stock hg, this is simply a debug message that is hidden
        by default, but with extensions or GUI tools it may be
        visible. 'topic' is the current operation, 'item' is a
        non-numeric marker of the current position (ie the currently
        in-process file), 'pos' is the current numeric position (ie
        revision, bytes, etc.), unit is a corresponding unit label,
        and total is the highest expected pos.

        Multiple nested topics may be active at a time.

        All topics should be marked closed by setting pos to None at
        termination.
        '''

        if pos == None or not self.debugflag:
            return

        if unit:
            unit = ' ' + unit
        if item:
            item = ' ' + item

        if total:
            pct = 100.0 * pos / total
            self.debug('%s:%s %s/%s%s (%4.2f%%)\n'
                     % (topic, item, pos, total, unit, pct))
        else:
            self.debug('%s:%s %s%s\n' % (topic, item, pos, unit))