# 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, incorporated herein by reference.
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 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 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 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 sys.stdout.closed: 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 sys.stderr.closed: 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 (%4.2g%%)\n'
% (topic, item, pos, total, unit, pct))
else:
self.debug('%s:%s %s%s\n' % (topic, item, pos, unit))