Mercurial > hg
view mercurial/ui.py @ 30762:35b516f800e0
wireproto: advertise supported media types and compression formats
This commit introduces support for advertising a server's support for
media types and compression formats in accordance with the spec defined
in internals.wireproto.
The bulk of the new code is a helper function in wireproto.py to
obtain a prioritized list of compression engines available to the
wire protocol. While not utilized yet, we implement support
for obtaining the list of compression engines advertised by the
client.
The upcoming HTTP protocol enhancements are a bit lower-level than
existing tests (most existing tests are command centric). So,
this commit establishes a new test file that will be appropriate
for holding tests around the functionality of the HTTP protocol
itself.
Rounding out this change, `hg debuginstall` now prints compression
engines available to the server.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 24 Dec 2016 15:21:46 -0700 |
parents | 16b5df5792a8 |
children | b96c57c1f860 |
line wrap: on
line source
# 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 __future__ import absolute_import import contextlib import errno import getpass import inspect import os import re import socket import sys import tempfile import traceback from .i18n import _ from .node import hex from . import ( config, encoding, error, formatter, progress, pycompat, scmutil, util, ) urlreq = util.urlreq samplehgrcs = { 'user': """# example user config (see 'hg help config' for more info) [ui] # name and email, e.g. # username = Jane Doe <jdoe@example.com> username = [extensions] # uncomment these lines to enable some popular extensions # (see 'hg help extensions' for more info) # # pager = # color =""", 'cloned': """# example repository config (see 'hg help config' for more info) [paths] default = %s # path aliases to other clones of this repo in URLs or filesystem paths # (see 'hg help config.paths' for more info) # # default-push = ssh://jdoe@example.net/hg/jdoes-fork # my-fork = ssh://jdoe@example.net/hg/jdoes-fork # my-clone = /home/jdoe/jdoes-clone [ui] # name and email (local to this repository, optional), e.g. # username = Jane Doe <jdoe@example.com> """, 'local': """# example repository config (see 'hg help config' for more info) [paths] # path aliases to other clones of this repo in URLs or filesystem paths # (see 'hg help config.paths' for more info) # # default = http://example.com/hg/example-repo # default-push = ssh://jdoe@example.net/hg/jdoes-fork # my-fork = ssh://jdoe@example.net/hg/jdoes-fork # my-clone = /home/jdoe/jdoes-clone [ui] # name and email (local to this repository, optional), e.g. # username = Jane Doe <jdoe@example.com> """, 'global': """# example system-wide hg config (see 'hg help config' for more info) [extensions] # uncomment these lines to enable some popular extensions # (see 'hg help extensions' for more info) # # blackbox = # color = # pager =""", } class ui(object): def __init__(self, src=None): """Create a fresh new ui object if no src given Use uimod.ui.load() to create a ui which knows global and user configs. In most cases, you should use ui.copy() to create a copy of an existing ui object. """ # _buffers: used for temporary capture of output self._buffers = [] # 3-tuple describing how each buffer in the stack behaves. # Values are (capture stderr, capture subprocesses, apply labels). self._bufferstates = [] # When a buffer is active, defines whether we are expanding labels. # This exists to prevent an extra list lookup. self._bufferapplylabels = None 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() self.callhooks = True # Insecure server connections requested. self.insecureconnections = False if src: self.fout = src.fout self.ferr = src.ferr self.fin = src.fin 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.callhooks = src.callhooks self.insecureconnections = src.insecureconnections self.fixconfig() self.httppasswordmgrdb = src.httppasswordmgrdb else: self.fout = util.stdout self.ferr = util.stderr self.fin = util.stdin # shared read-only environment self.environ = encoding.environ self.httppasswordmgrdb = urlreq.httppasswordmgrwithdefaultrealm() @classmethod def load(cls): """Create a ui and load global and user configs""" u = cls() # we always trust global config files for f in scmutil.rcpath(): u.readconfig(f, trust=True) return u def copy(self): return self.__class__(self) def resetstate(self): """Clear internal state that shouldn't persist across commands""" if self._progbar: self._progbar.resetstate() # reset last-print time of progress bar self.httppasswordmgrdb = urlreq.httppasswordmgrwithdefaultrealm() def formatter(self, topic, opts): return formatter.formatter(self, topic, opts) def _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, u'rb') except IOError: if not sections: # ignore unless we were looking for something return raise cfg = config.config() trusted = sections or trust or self._trusted(fp, filename) try: cfg.read(filename, fp, sections=sections, remap=remap) fp.close() except error.ConfigError as inst: if trusted: raise self.warn(_("ignored: %s\n") % str(inst)) if self.plain(): for k in ('debug', 'fallbackencoding', 'quiet', 'slash', 'logtemplate', 'statuscopies', 'style', 'traceback', 'verbose'): if k in cfg['ui']: del cfg['ui'][k] for k, v in cfg.items('defaults'): del cfg['defaults'][k] # Don't remove aliases from the configuration if in the exceptionlist if self.plain('alias'): for k, v in cfg.items('alias'): del cfg['alias'][k] if self.plain('revsetalias'): for k, v in cfg.items('revsetalias'): del cfg['revsetalias'][k] if self.plain('templatealias'): for k, v in cfg.items('templatealias'): del cfg['templatealias'][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, section=None): if section in (None, 'paths'): # expand vars and ~ # translate paths relative to root (or home) into absolute paths root = root or pycompat.getcwd() for c in self._tcfg, self._ucfg, self._ocfg: for n, p in c.items('paths'): # Ignore sub-options. if ':' in n: continue if not p: continue if '%%' in p: s = self.configsource('paths', n) or 'none' self.warn(_("(deprecated '%%' in path %s=%s from %s)\n") % (n, p, s)) p = p.replace('%%', '%') p = util.expandpath(p) if not util.hasscheme(p) and not os.path.isabs(p): p = os.path.normpath(os.path.join(root, p)) c.set("paths", n, p) if section in (None, 'ui'): # 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.debugflag or self.configbool("ui", "report_untrusted", True) self.tracebackflag = self.configbool('ui', 'traceback', False) if section in (None, 'trusted'): # update trust information self._trustusers.update(self.configlist('trusted', 'users')) self._trustgroups.update(self.configlist('trusted', 'groups')) def backupconfig(self, section, item): return (self._ocfg.backup(section, item), self._tcfg.backup(section, item), self._ucfg.backup(section, item),) def restoreconfig(self, data): self._ocfg.restore(data[0]) self._tcfg.restore(data[1]) self._ucfg.restore(data[2]) def setconfig(self, section, name, value, source=''): for cfg in (self._ocfg, self._tcfg, self._ucfg): cfg.set(section, name, value, source) self.fixconfig(section=section) 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) def config(self, section, name, default=None, untrusted=False): if isinstance(name, list): alternates = name else: alternates = [name] for n in alternates: value = self._data(untrusted).get(section, n, None) if value is not None: name = n break else: value = default if self.debugflag and not untrusted and self._reportuntrusted: for n in alternates: uvalue = self._ucfg.get(section, n) if uvalue is not None and uvalue != value: self.debug("ignoring untrusted configuration option " "%s.%s = %s\n" % (section, n, uvalue)) return value def configsuboptions(self, section, name, default=None, untrusted=False): """Get a config option and all sub-options. Some config options have sub-options that are declared with the format "key:opt = value". This method is used to return the main option and all its declared sub-options. Returns a 2-tuple of ``(option, sub-options)``, where `sub-options`` is a dict of defined sub-options where keys and values are strings. """ data = self._data(untrusted) main = data.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 != main: self.debug('ignoring untrusted configuration option ' '%s.%s = %s\n' % (section, name, uvalue)) sub = {} prefix = '%s:' % name for k, v in data.items(section): if k.startswith(prefix): sub[k[len(prefix):]] = v if self.debugflag and not untrusted and self._reportuntrusted: for k, v in sub.items(): uvalue = self._ucfg.get(section, '%s:%s' % (name, k)) if uvalue is not None and uvalue != v: self.debug('ignoring untrusted configuration option ' '%s:%s.%s = %s\n' % (section, name, k, uvalue)) return main, sub def configpath(self, section, name, default=None, untrusted=False): 'get a path config item, expanded relative to repo root or config file' v = self.config(section, name, default, untrusted) if v is None: return None if not os.path.isabs(v) or "://" not in v: src = self.configsource(section, name, untrusted) if ':' in src: base = os.path.dirname(src.rsplit(':')[0]) v = os.path.join(base, os.path.expanduser(v)) return v def configbool(self, section, name, default=False, untrusted=False): """parse a configuration element as a boolean >>> u = ui(); s = 'foo' >>> u.setconfig(s, 'true', 'yes') >>> u.configbool(s, 'true') True >>> u.setconfig(s, 'false', 'no') >>> u.configbool(s, 'false') False >>> u.configbool(s, 'unknown') False >>> u.configbool(s, 'unknown', True) True >>> u.setconfig(s, 'invalid', 'somevalue') >>> u.configbool(s, 'invalid') Traceback (most recent call last): ... ConfigError: foo.invalid is not a boolean ('somevalue') """ v = self.config(section, name, None, untrusted) if v is None: return default if isinstance(v, bool): return v b = util.parsebool(v) if b is None: raise error.ConfigError(_("%s.%s is not a boolean ('%s')") % (section, name, v)) return b def configint(self, section, name, default=None, untrusted=False): """parse a configuration element as an integer >>> u = ui(); s = 'foo' >>> u.setconfig(s, 'int1', '42') >>> u.configint(s, 'int1') 42 >>> u.setconfig(s, 'int2', '-42') >>> u.configint(s, 'int2') -42 >>> u.configint(s, 'unknown', 7) 7 >>> u.setconfig(s, 'invalid', 'somevalue') >>> u.configint(s, 'invalid') Traceback (most recent call last): ... ConfigError: foo.invalid is not an integer ('somevalue') """ v = self.config(section, name, None, untrusted) if v is None: return default try: return int(v) except ValueError: raise error.ConfigError(_("%s.%s is not an integer ('%s')") % (section, name, v)) def configbytes(self, section, name, default=0, untrusted=False): """parse a configuration element as a quantity in bytes Units can be specified as b (bytes), k or kb (kilobytes), m or mb (megabytes), g or gb (gigabytes). >>> u = ui(); s = 'foo' >>> u.setconfig(s, 'val1', '42') >>> u.configbytes(s, 'val1') 42 >>> u.setconfig(s, 'val2', '42.5 kb') >>> u.configbytes(s, 'val2') 43520 >>> u.configbytes(s, 'unknown', '7 MB') 7340032 >>> u.setconfig(s, 'invalid', 'somevalue') >>> u.configbytes(s, 'invalid') Traceback (most recent call last): ... ConfigError: foo.invalid is not a byte quantity ('somevalue') """ value = self.config(section, name) if value is None: if not isinstance(default, str): return default value = default try: return util.sizetoint(value) except error.ParseError: raise error.ConfigError(_("%s.%s is not a byte quantity ('%s')") % (section, name, value)) def configlist(self, section, name, default=None, untrusted=False): """parse a configuration element as a list of comma/space separated strings >>> u = ui(); s = 'foo' >>> u.setconfig(s, 'list1', 'this,is "a small" ,test') >>> u.configlist(s, 'list1') ['this', 'is', 'a small', 'test'] """ def _parse_plain(parts, s, offset): whitespace = False while offset < len(s) and (s[offset].isspace() or s[offset] == ','): whitespace = True offset += 1 if offset >= len(s): return None, parts, offset if whitespace: parts.append('') if s[offset] == '"' and not parts[-1]: return _parse_quote, parts, offset + 1 elif s[offset] == '"' and parts[-1][-1] == '\\': parts[-1] = parts[-1][:-1] + s[offset] return _parse_plain, parts, offset + 1 parts[-1] += s[offset] return _parse_plain, parts, offset + 1 def _parse_quote(parts, s, offset): if offset < len(s) and s[offset] == '"': # "" parts.append('') offset += 1 while offset < len(s) and (s[offset].isspace() or s[offset] == ','): offset += 1 return _parse_plain, parts, offset while offset < len(s) and s[offset] != '"': if (s[offset] == '\\' and offset + 1 < len(s) and s[offset + 1] == '"'): offset += 1 parts[-1] += '"' else: parts[-1] += s[offset] offset += 1 if offset >= len(s): real_parts = _configlist(parts[-1]) if not real_parts: parts[-1] = '"' else: real_parts[0] = '"' + real_parts[0] parts = parts[:-1] parts.extend(real_parts) return None, parts, offset offset += 1 while offset < len(s) and s[offset] in [' ', ',']: offset += 1 if offset < len(s): if offset + 1 == len(s) and s[offset] == '"': parts[-1] += '"' offset += 1 else: parts.append('') else: return None, parts, offset return _parse_plain, parts, offset def _configlist(s): s = s.rstrip(' ,') if not s: return [] parser, parts, offset = _parse_plain, [''], 0 while parser: parser, parts, offset = parser(parts, s, offset) return parts result = self.config(section, name, untrusted=untrusted) if result is None: result = default or [] if isinstance(result, bytes): result = _configlist(result.lstrip(' ,\n')) if result is None: result = default or [] return result def hasconfig(self, section, name, untrusted=False): return self._data(untrusted).hasitem(section, name) 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, ignoresub=False): items = self._data(untrusted).items(section) if ignoresub: newitems = {} for k, v in items: if ':' not in k: newitems[k] = v items = newitems.items() 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, value def plain(self, feature=None): '''is plain mode active? Plain mode means that all configuration variables which affect the behavior and output of Mercurial should be ignored. Additionally, the output should be stable, reproducible and suitable for use in scripts or applications. The only way to trigger plain mode is by setting either the `HGPLAIN' or `HGPLAINEXCEPT' environment variables. The return value can either be - False if HGPLAIN is not set, or feature is in HGPLAINEXCEPT - True otherwise ''' if ('HGPLAIN' not in encoding.environ and 'HGPLAINEXCEPT' not in encoding.environ): return False exceptions = encoding.environ.get('HGPLAINEXCEPT', '').strip().split(',') if feature and exceptions: return feature not in exceptions return True 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 = encoding.environ.get("HGUSER") if user is None: user = self.config("ui", ["username", "user"]) if user is not None: user = os.path.expandvars(user) if user is None: user = encoding.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 error.Abort(_('no username supplied'), hint=_("use 'hg config --edit' " 'to set your username')) if "\n" in user: raise error.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 expandpath(self, loc, default=None): """Return repository location relative to cwd or from [paths]""" try: p = self.paths.getpath(loc) if p: return p.rawloc except error.RepoError: pass if default: try: p = self.paths.getpath(default) if p: return p.rawloc except error.RepoError: pass return loc @util.propertycache def paths(self): return paths(self) def pushbuffer(self, error=False, subproc=False, labeled=False): """install a buffer to capture standard output of the ui object If error is True, the error output will be captured too. If subproc is True, output from subprocesses (typically hooks) will be captured too. If labeled is True, any labels associated with buffered output will be handled. By default, this has no effect on the output returned, but extensions and GUI tools may handle this argument and returned styled output. If output is being buffered so it can be captured and parsed or processed, labeled should not be set to True. """ self._buffers.append([]) self._bufferstates.append((error, subproc, labeled)) self._bufferapplylabels = labeled def popbuffer(self): '''pop the last buffer and return the buffered output''' self._bufferstates.pop() if self._bufferstates: self._bufferapplylabels = self._bufferstates[-1][2] else: self._bufferapplylabels = None return "".join(self._buffers.pop()) def write(self, *args, **opts): '''write args to output By default, this method simply writes to the buffer or stdout, but extensions or GUI tools may override this method, write_err(), popbuffer(), and label() to style output from various parts of hg. An optional keyword argument, "label", can be passed in. This should be a string containing label names separated by space. Label names take the form of "topic.type". For example, ui.debug() issues a label of "ui.debug". When labeling output for a specific command, a label of "cmdname.type" is recommended. For example, status issues a label of "status.modified" for modified files. ''' if self._buffers and not opts.get('prompt', False): self._buffers[-1].extend(a for a in args) else: self._progclear() for a in args: self.fout.write(a) def write_err(self, *args, **opts): self._progclear() try: if self._bufferstates and self._bufferstates[-1][0]: return self.write(*args, **opts) if not getattr(self.fout, 'closed', False): self.fout.flush() for a in args: self.ferr.write(a) # stderr may be buffered under win32 when redirected to files, # including stdout. if not getattr(self.ferr, 'closed', False): self.ferr.flush() except IOError as inst: if inst.errno not in (errno.EPIPE, errno.EIO, errno.EBADF): raise def flush(self): try: self.fout.flush() except (IOError, ValueError): pass try: self.ferr.flush() except (IOError, ValueError): pass def _isatty(self, fh): if self.configbool('ui', 'nontty', False): return False return util.isatty(fh) def interface(self, feature): """what interface to use for interactive console features? The interface is controlled by the value of `ui.interface` but also by the value of feature-specific configuration. For example: ui.interface.histedit = text ui.interface.chunkselector = curses Here the features are "histedit" and "chunkselector". The configuration above means that the default interfaces for commands is curses, the interface for histedit is text and the interface for selecting chunk is crecord (the best curses interface available). Consider the following example: ui.interface = curses ui.interface.histedit = text Then histedit will use the text interface and chunkselector will use the default curses interface (crecord at the moment). """ alldefaults = frozenset(["text", "curses"]) featureinterfaces = { "chunkselector": [ "text", "curses", ] } # Feature-specific interface if feature not in featureinterfaces.keys(): # Programming error, not user error raise ValueError("Unknown feature requested %s" % feature) availableinterfaces = frozenset(featureinterfaces[feature]) if alldefaults > availableinterfaces: # Programming error, not user error. We need a use case to # define the right thing to do here. raise ValueError( "Feature %s does not handle all default interfaces" % feature) if self.plain(): return "text" # Default interface for all the features defaultinterface = "text" i = self.config("ui", "interface", None) if i in alldefaults: defaultinterface = i choseninterface = defaultinterface f = self.config("ui", "interface.%s" % feature, None) if f in availableinterfaces: choseninterface = f if i is not None and defaultinterface != i: if f is not None: self.warn(_("invalid value for ui.interface: %s\n") % (i,)) else: self.warn(_("invalid value for ui.interface: %s (using %s)\n") % (i, choseninterface)) if f is not None and choseninterface != f: self.warn(_("invalid value for ui.interface.%s: %s (using %s)\n") % (feature, f, choseninterface)) return choseninterface def interactive(self): '''is interactive input allowed? An interactive session is a session where input can be reasonably read from `sys.stdin'. If this function returns false, any attempt to read from stdin should fail with an error, unless a sensible default has been specified. Interactiveness is triggered by the value of the `ui.interactive' configuration variable or - if it is unset - when `sys.stdin' points to a terminal device. This function refers to input only; for output, see `ui.formatted()'. ''' i = self.configbool("ui", "interactive", None) if i is None: # some environments replace stdin without implementing isatty # usually those are non-interactive return self._isatty(self.fin) return i def termwidth(self): '''how wide is the terminal in columns? ''' if 'COLUMNS' in encoding.environ: try: return int(encoding.environ['COLUMNS']) except ValueError: pass return scmutil.termsize(self)[0] def formatted(self): '''should formatted output be used? It is often desirable to format the output to suite the output medium. Examples of this are truncating long lines or colorizing messages. However, this is not often not desirable when piping output into other utilities, e.g. `grep'. Formatted output is triggered by the value of the `ui.formatted' configuration variable or - if it is unset - when `sys.stdout' points to a terminal device. Please note that `ui.formatted' should be considered an implementation detail; it is not intended for use outside Mercurial or its extensions. This function refers to output only; for input, see `ui.interactive()'. This function always returns false when in plain mode, see `ui.plain()'. ''' if self.plain(): return False i = self.configbool("ui", "formatted", None) if i is None: # some environments replace stdout without implementing isatty # usually those are non-interactive return self._isatty(self.fout) return i def _readline(self, prompt=''): if self._isatty(self.fin): 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 # call write() so output goes through subclassed implementation # e.g. color extension on Windows self.write(prompt, prompt=True) # instead of trying to emulate raw_input, swap (self.fin, # self.fout) with (sys.stdin, sys.stdout) oldin = sys.stdin oldout = sys.stdout sys.stdin = self.fin sys.stdout = self.fout # prompt ' ' must exist; otherwise readline may delete entire line # - http://bugs.python.org/issue12833 line = raw_input(' ') sys.stdin = oldin sys.stdout = oldout # 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 or '', "\n") return default try: r = self._readline(self.label(msg, 'ui.prompt')) if not r: r = default if self.configbool('ui', 'promptecho'): self.write(r, "\n") return r except EOFError: raise error.ResponseExpected() @staticmethod def extractchoices(prompt): """Extract prompt message and list of choices from specified prompt. This returns tuple "(message, choices)", and "choices" is the list of tuple "(response character, text without &)". >>> ui.extractchoices("awake? $$ &Yes $$ &No") ('awake? ', [('y', 'Yes'), ('n', 'No')]) >>> ui.extractchoices("line\\nbreak? $$ &Yes $$ &No") ('line\\nbreak? ', [('y', 'Yes'), ('n', 'No')]) >>> ui.extractchoices("want lots of $$money$$?$$Ye&s$$N&o") ('want lots of $$money$$?', [('s', 'Yes'), ('o', 'No')]) """ # Sadly, the prompt string may have been built with a filename # containing "$$" so let's try to find the first valid-looking # prompt to start parsing. Sadly, we also can't rely on # choices containing spaces, ASCII, or basically anything # except an ampersand followed by a character. m = re.match(r'(?s)(.+?)\$\$([^\$]*&[^ \$].*)', prompt) msg = m.group(1) choices = [p.strip(' ') for p in m.group(2).split('$$')] return (msg, [(s[s.index('&') + 1].lower(), s.replace('&', '', 1)) for s in choices]) def promptchoice(self, prompt, default=0): """Prompt user with a message, read response, and ensure it matches one of the provided choices. The prompt is formatted as follows: "would you like fries with that (Yn)? $$ &Yes $$ &No" The index of the choice is returned. Responses are case insensitive. If ui is not interactive, the default is returned. """ msg, choices = self.extractchoices(prompt) resps = [r for r, t 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: self.write_err(self.label(prompt or _('password: '), 'ui.prompt')) # disable getpass() only if explicitly specified. it's still valid # to interact with tty even if fin is not a tty. if self.configbool('ui', 'nontty'): return self.fin.readline().rstrip('\n') else: return getpass.getpass('') except EOFError: raise error.ResponseExpected() def status(self, *msg, **opts): '''write status message to output (if ui.quiet is False) This adds an output label of "ui.status". ''' if not self.quiet: opts['label'] = opts.get('label', '') + ' ui.status' self.write(*msg, **opts) def warn(self, *msg, **opts): '''write warning message to output (stderr) This adds an output label of "ui.warning". ''' opts['label'] = opts.get('label', '') + ' ui.warning' self.write_err(*msg, **opts) def note(self, *msg, **opts): '''write note to output (if ui.verbose is True) This adds an output label of "ui.note". ''' if self.verbose: opts['label'] = opts.get('label', '') + ' ui.note' self.write(*msg, **opts) def debug(self, *msg, **opts): '''write debug message to output (if ui.debugflag is True) This adds an output label of "ui.debug". ''' if self.debugflag: opts['label'] = opts.get('label', '') + ' ui.debug' self.write(*msg, **opts) def edit(self, text, user, extra=None, editform=None, pending=None): extra_defaults = { 'prefix': 'editor', 'suffix': '.txt', } if extra is not None: extra_defaults.update(extra) extra = extra_defaults (fd, name) = tempfile.mkstemp(prefix='hg-' + extra['prefix'] + '-', suffix=extra['suffix'], text=True) try: f = os.fdopen(fd, "w") f.write(text) f.close() environ = {'HGUSER': user} if 'transplant_source' in extra: environ.update({'HGREVISION': hex(extra['transplant_source'])}) for label in ('intermediate-source', 'source', 'rebase_source'): if label in extra: environ.update({'HGREVISION': extra[label]}) break if editform: environ.update({'HGEDITFORM': editform}) if pending: environ.update({'HG_PENDING': pending}) editor = self.geteditor() self.system("%s \"%s\"" % (editor, name), environ=environ, onerr=error.Abort, errprefix=_("edit failed")) f = open(name) t = f.read() f.close() finally: os.unlink(name) return t def system(self, cmd, environ=None, cwd=None, onerr=None, errprefix=None): '''execute shell command with appropriate output stream. command output will be redirected if fout is not stdout. ''' out = self.fout if any(s[1] for s in self._bufferstates): out = self return util.system(cmd, environ=environ, cwd=cwd, onerr=onerr, errprefix=errprefix, out=out) def traceback(self, exc=None, force=False): '''print exception traceback if traceback printing enabled or forced. only to call in exception handler. returns true if traceback printed.''' if self.tracebackflag or force: if exc is None: exc = sys.exc_info() cause = getattr(exc[1], 'cause', None) if cause is not None: causetb = traceback.format_tb(cause[2]) exctb = traceback.format_tb(exc[2]) exconly = traceback.format_exception_only(cause[0], cause[1]) # exclude frame where 'exc' was chained and rethrown from exctb self.write_err('Traceback (most recent call last):\n', ''.join(exctb[:-1]), ''.join(causetb), ''.join(exconly)) else: output = traceback.format_exception(exc[0], exc[1], exc[2]) self.write_err(''.join(output)) return self.tracebackflag or force def geteditor(self): '''return editor to use''' if pycompat.sysplatform == 'plan9': # vi is the MIPS instruction simulator on Plan 9. We # instead default to E to plumb commit messages to # avoid confusion. editor = 'E' else: editor = 'vi' return (encoding.environ.get("HGEDITOR") or self.config("ui", "editor") or encoding.environ.get("VISUAL") or encoding.environ.get("EDITOR", editor)) @util.propertycache def _progbar(self): """setup the progbar singleton to the ui object""" if (self.quiet or self.debugflag or self.configbool('progress', 'disable', False) or not progress.shouldprint(self)): return None return getprogbar(self) def _progclear(self): """clear progress bar output if any. use it before any output""" if '_progbar' not in vars(self): # nothing loaded yet return if self._progbar is not None and self._progbar.printed: self._progbar.clear() def progress(self, topic, pos, item="", unit="", total=None): '''show a progress message By default a textual progress bar will be displayed if an operation takes too long. 'topic' is the current operation, 'item' is a non-numeric marker of the current position (i.e. the currently in-process file), 'pos' is the current numeric position (i.e. 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 self._progbar is not None: self._progbar.progress(topic, pos, item=item, unit=unit, total=total) if pos is None or not self.configbool('progress', 'debug'): 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)) def log(self, service, *msg, **opts): '''hook for logging facility extensions service should be a readily-identifiable subsystem, which will allow filtering. *msg should be a newline-terminated format string to log, and then any values to %-format into that format string. **opts currently has no defined meanings. ''' def label(self, msg, label): '''style msg based on supplied label Like ui.write(), this just returns msg unchanged, but extensions and GUI tools can override it to allow styling output without writing it. ui.write(s, 'label') is equivalent to ui.write(ui.label(s, 'label')). ''' return msg def develwarn(self, msg, stacklevel=1, config=None): """issue a developer warning message Use 'stacklevel' to report the offender some layers further up in the stack. """ if not self.configbool('devel', 'all-warnings'): if config is not None and not self.configbool('devel', config): return msg = 'devel-warn: ' + msg stacklevel += 1 # get in develwarn if self.tracebackflag: util.debugstacktrace(msg, stacklevel, self.ferr, self.fout) self.log('develwarn', '%s at:\n%s' % (msg, ''.join(util.getstackframes(stacklevel)))) else: curframe = inspect.currentframe() calframe = inspect.getouterframes(curframe, 2) self.write_err('%s at: %s:%s (%s)\n' % ((msg,) + calframe[stacklevel][1:4])) self.log('develwarn', '%s at: %s:%s (%s)\n', msg, *calframe[stacklevel][1:4]) curframe = calframe = None # avoid cycles def deprecwarn(self, msg, version): """issue a deprecation warning - msg: message explaining what is deprecated and how to upgrade, - version: last version where the API will be supported, """ if not (self.configbool('devel', 'all-warnings') or self.configbool('devel', 'deprec-warn')): return msg += ("\n(compatibility will be dropped after Mercurial-%s," " update your code.)") % version self.develwarn(msg, stacklevel=2, config='deprec-warn') @contextlib.contextmanager def configoverride(self, overrides, source=""): """Context manager for temporary config overrides `overrides` must be a dict of the following structure: {(section, name) : value}""" backups = {} try: for (section, name), value in overrides.items(): backups[(section, name)] = self.backupconfig(section, name) self.setconfig(section, name, value, source) yield finally: for __, backup in backups.items(): self.restoreconfig(backup) # just restoring ui.quiet config to the previous value is not enough # as it does not update ui.quiet class member if ('ui', 'quiet') in overrides: self.fixconfig(section='ui') class paths(dict): """Represents a collection of paths and their configs. Data is initially derived from ui instances and the config files they have loaded. """ def __init__(self, ui): dict.__init__(self) for name, loc in ui.configitems('paths', ignoresub=True): # No location is the same as not existing. if not loc: continue loc, sub = ui.configsuboptions('paths', name) self[name] = path(ui, name, rawloc=loc, suboptions=sub) def getpath(self, name, default=None): """Return a ``path`` from a string, falling back to default. ``name`` can be a named path or locations. Locations are filesystem paths or URIs. Returns None if ``name`` is not a registered path, a URI, or a local path to a repo. """ # Only fall back to default if no path was requested. if name is None: if not default: default = () elif not isinstance(default, (tuple, list)): default = (default,) for k in default: try: return self[k] except KeyError: continue return None # Most likely empty string. # This may need to raise in the future. if not name: return None try: return self[name] except KeyError: # Try to resolve as a local path or URI. try: # We don't pass sub-options in, so no need to pass ui instance. return path(None, None, rawloc=name) except ValueError: raise error.RepoError(_('repository %s does not exist') % name) _pathsuboptions = {} def pathsuboption(option, attr): """Decorator used to declare a path sub-option. Arguments are the sub-option name and the attribute it should set on ``path`` instances. The decorated function will receive as arguments a ``ui`` instance, ``path`` instance, and the string value of this option from the config. The function should return the value that will be set on the ``path`` instance. This decorator can be used to perform additional verification of sub-options and to change the type of sub-options. """ def register(func): _pathsuboptions[option] = (attr, func) return func return register @pathsuboption('pushurl', 'pushloc') def pushurlpathoption(ui, path, value): u = util.url(value) # Actually require a URL. if not u.scheme: ui.warn(_('(paths.%s:pushurl not a URL; ignoring)\n') % path.name) return None # Don't support the #foo syntax in the push URL to declare branch to # push. if u.fragment: ui.warn(_('("#fragment" in paths.%s:pushurl not supported; ' 'ignoring)\n') % path.name) u.fragment = None return str(u) @pathsuboption('pushrev', 'pushrev') def pushrevpathoption(ui, path, value): return value class path(object): """Represents an individual path and its configuration.""" def __init__(self, ui, name, rawloc=None, suboptions=None): """Construct a path from its config options. ``ui`` is the ``ui`` instance the path is coming from. ``name`` is the symbolic name of the path. ``rawloc`` is the raw location, as defined in the config. ``pushloc`` is the raw locations pushes should be made to. If ``name`` is not defined, we require that the location be a) a local filesystem path with a .hg directory or b) a URL. If not, ``ValueError`` is raised. """ if not rawloc: raise ValueError('rawloc must be defined') # Locations may define branches via syntax <base>#<branch>. u = util.url(rawloc) branch = None if u.fragment: branch = u.fragment u.fragment = None self.url = u self.branch = branch self.name = name self.rawloc = rawloc self.loc = str(u) # When given a raw location but not a symbolic name, validate the # location is valid. if not name and not u.scheme and not self._isvalidlocalpath(self.loc): raise ValueError('location is not a URL or path to a local ' 'repo: %s' % rawloc) suboptions = suboptions or {} # Now process the sub-options. If a sub-option is registered, its # attribute will always be present. The value will be None if there # was no valid sub-option. for suboption, (attr, func) in _pathsuboptions.iteritems(): if suboption not in suboptions: setattr(self, attr, None) continue value = func(ui, self, suboptions[suboption]) setattr(self, attr, value) def _isvalidlocalpath(self, path): """Returns True if the given path is a potentially valid repository. This is its own function so that extensions can change the definition of 'valid' in this case (like when pulling from a git repo into a hg one).""" return os.path.isdir(os.path.join(path, '.hg')) @property def suboptions(self): """Return sub-options and their values for this path. This is intended to be used for presentation purposes. """ d = {} for subopt, (attr, _func) in _pathsuboptions.iteritems(): value = getattr(self, attr) if value is not None: d[subopt] = value return d # we instantiate one globally shared progress bar to avoid # competing progress bars when multiple UI objects get created _progresssingleton = None def getprogbar(ui): global _progresssingleton if _progresssingleton is None: # passing 'ui' object to the singleton is fishy, # this is how the extension used to work but feel free to rework it. _progresssingleton = progress.progbar(ui) return _progresssingleton