# 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, incorporated herein by reference.
from i18n import _
import errno, getpass, os, re, socket, sys, tempfile
import config, traceback, 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.traceback = False
self.interactive = self.report_untrusted = True
self.overlay = config.config()
self.cdata = config.config()
self.ucdata = config.config()
self._trustusers = {}
self._trustgroups = {}
if src:
self.cdata = src.cdata.copy()
self.ucdata = src.ucdata.copy()
self.overlay = src.overlay.copy()
self._trustusers = src._trustusers.copy()
self._trustgroups = src._trustgroups.copy()
self.fixconfig()
else:
# we always trust global config files
for f in util.rcpath():
self.readconfig(f, trust=True)
def copy(self):
return ui(self)
_isatty = None
def isatty(self):
if ui._isatty is None:
try:
ui._isatty = sys.stdin.isatty()
except AttributeError: # not a real file object
ui._isatty = False
except IOError:
# access to stdin is unsafe in a WSGI environment
ui._isatty = False
return ui._isatty
def _is_trusted(self, fp, f):
st = util.fstat(fp)
if util.isowner(fp, 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.report_untrusted:
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):
try:
fp = open(filename)
except IOError:
if not sections: # ignore unless we were looking for something
return
raise
cdata = config.config()
trusted = sections or trust or self._is_trusted(fp, filename)
try:
cdata.read(filename, fp, sections=sections)
except error.ConfigError, inst:
if trusted:
raise
self.warn(_("Ignored: %s\n") % str(inst))
if trusted:
self.cdata.update(cdata)
self.cdata.update(self.overlay)
self.ucdata.update(cdata)
self.ucdata.update(self.overlay)
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.cdata, self.ucdata, self.overlay:
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.report_untrusted = self.configbool("ui", "report_untrusted", True)
self.interactive = self.configbool("ui", "interactive", self.isatty())
self.traceback = self.configbool('ui', 'traceback', False)
# update trust information
for user in self.configlist('trusted', 'users'):
self._trustusers[user] = 1
for group in self.configlist('trusted', 'groups'):
self._trustgroups[group] = 1
def setconfig(self, section, name, value):
for cdata in (self.overlay, self.cdata, self.ucdata):
cdata.set(section, name, value)
self.fixconfig()
def _data(self, untrusted):
return untrusted and self.ucdata or self.cdata
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:
uvalue = self.ucdata.get(section, name)
if uvalue is not None and uvalue != value:
self.warn(_("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 == 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:
for k,v in self.ucdata.items(section):
if self.cdata.get(section, k) != v:
self.warn(_("Ignoring untrusted configuration option "
"%s.%s = %s\n") % (section, k, v))
return items
def walkconfig(self, untrusted=False):
cdata = self._data(untrusted)
for section in cdata.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:
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(_("Please specify a username."))
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 and '%%' in p:
ui.warn('(deprecated \'\%\%\' in path %s=%s from %s)\n' %
(loc, p, self.configsource('paths', loc)))
p = p.replace('%%', '%')
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 _readline(self, prompt=''):
if self.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, pat=None, default="y"):
"""Prompt user with msg, read response, and ensure it matches pat
If not interactive -- the default is returned
"""
if not self.interactive:
self.note(msg, ' ', default, "\n")
return default
while True:
try:
r = self._readline(msg + ' ')
if not r:
return default
if not pat or re.match(pat, r):
return r
else:
self.write(_("unrecognized response\n"))
except EOFError:
raise util.Abort(_('response expected'))
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()
t = re.sub("(?m)^HG:.*\n", "", t)
finally:
os.unlink(name)
return t
def print_exc(self):
'''print exception traceback if traceback printing enabled.
only to call in exception handler. returns true if traceback
printed.'''
if self.traceback:
traceback.print_exc()
return self.traceback
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"))