Mercurial > hg
view hgext/color.py @ 31083:c42feb5f3143
color: move '_colormode' to the core 'ui' class
Having all 'ui' objects aware of 'color' allows us to update the core code to
handle color. The mode will stay 'None' in the default case so that will not
introduce any changes.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Mon, 20 Feb 2017 12:12:08 +0100 |
parents | 80f04ba7f4d1 |
children | 1482b57701ad |
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# color.py color output for Mercurial commands # # Copyright (C) 2007 Kevin Christen <kevin.christen@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''colorize output from some commands The color extension colorizes output from several Mercurial commands. For example, the diff command shows additions in green and deletions in red, while the status command shows modified files in magenta. Many other commands have analogous colors. It is possible to customize these colors. Effects ------- Other effects in addition to color, like bold and underlined text, are also available. By default, the terminfo database is used to find the terminal codes used to change color and effect. If terminfo is not available, then effects are rendered with the ECMA-48 SGR control function (aka ANSI escape codes). The available effects in terminfo mode are 'blink', 'bold', 'dim', 'inverse', 'invisible', 'italic', 'standout', and 'underline'; in ECMA-48 mode, the options are 'bold', 'inverse', 'italic', and 'underline'. How each is rendered depends on the terminal emulator. Some may not be available for a given terminal type, and will be silently ignored. If the terminfo entry for your terminal is missing codes for an effect or has the wrong codes, you can add or override those codes in your configuration:: [color] terminfo.dim = \E[2m where '\E' is substituted with an escape character. Labels ------ Text receives color effects depending on the labels that it has. Many default Mercurial commands emit labelled text. You can also define your own labels in templates using the label function, see :hg:`help templates`. A single portion of text may have more than one label. In that case, effects given to the last label will override any other effects. This includes the special "none" effect, which nullifies other effects. Labels are normally invisible. In order to see these labels and their position in the text, use the global --color=debug option. The same anchor text may be associated to multiple labels, e.g. [log.changeset changeset.secret|changeset: 22611:6f0a53c8f587] The following are the default effects for some default labels. Default effects may be overridden from your configuration file:: [color] status.modified = blue bold underline red_background status.added = green bold status.removed = red bold blue_background status.deleted = cyan bold underline status.unknown = magenta bold underline status.ignored = black bold # 'none' turns off all effects status.clean = none status.copied = none qseries.applied = blue bold underline qseries.unapplied = black bold qseries.missing = red bold diff.diffline = bold diff.extended = cyan bold diff.file_a = red bold diff.file_b = green bold diff.hunk = magenta diff.deleted = red diff.inserted = green diff.changed = white diff.tab = diff.trailingwhitespace = bold red_background # Blank so it inherits the style of the surrounding label changeset.public = changeset.draft = changeset.secret = resolve.unresolved = red bold resolve.resolved = green bold bookmarks.active = green branches.active = none branches.closed = black bold branches.current = green branches.inactive = none tags.normal = green tags.local = black bold rebase.rebased = blue rebase.remaining = red bold shelve.age = cyan shelve.newest = green bold shelve.name = blue bold histedit.remaining = red bold Custom colors ------------- Because there are only eight standard colors, this module allows you to define color names for other color slots which might be available for your terminal type, assuming terminfo mode. For instance:: color.brightblue = 12 color.pink = 207 color.orange = 202 to set 'brightblue' to color slot 12 (useful for 16 color terminals that have brighter colors defined in the upper eight) and, 'pink' and 'orange' to colors in 256-color xterm's default color cube. These defined colors may then be used as any of the pre-defined eight, including appending '_background' to set the background to that color. Modes ----- By default, the color extension will use ANSI mode (or win32 mode on Windows) if it detects a terminal. To override auto mode (to enable terminfo mode, for example), set the following configuration option:: [color] mode = terminfo Any value other than 'ansi', 'win32', 'terminfo', or 'auto' will disable color. Note that on some systems, terminfo mode may cause problems when using color with the pager extension and less -R. less with the -R option will only display ECMA-48 color codes, and terminfo mode may sometimes emit codes that less doesn't understand. You can work around this by either using ansi mode (or auto mode), or by using less -r (which will pass through all terminal control codes, not just color control codes). On some systems (such as MSYS in Windows), the terminal may support a different color mode than the pager (activated via the "pager" extension). It is possible to define separate modes depending on whether the pager is active:: [color] mode = auto pagermode = ansi If ``pagermode`` is not defined, the ``mode`` will be used. ''' from __future__ import absolute_import try: import curses curses.COLOR_BLACK # force import except ImportError: curses = None from mercurial.i18n import _ from mercurial import ( cmdutil, color, commands, dispatch, encoding, extensions, pycompat, subrepo, ui as uimod, util, ) cmdtable = {} command = cmdutil.command(cmdtable) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = 'ships-with-hg-core' def _terminfosetup(ui, mode): '''Initialize terminfo data and the terminal if we're in terminfo mode.''' # If we failed to load curses, we go ahead and return. if curses is None: return # Otherwise, see what the config file says. if mode not in ('auto', 'terminfo'): return for key, val in ui.configitems('color'): if key.startswith('color.'): newval = (False, int(val), '') color._terminfo_params[key[6:]] = newval elif key.startswith('terminfo.'): newval = (True, '', val.replace('\\E', '\x1b')) color._terminfo_params[key[9:]] = newval try: curses.setupterm() except curses.error as e: color._terminfo_params.clear() return for key, (b, e, c) in color._terminfo_params.items(): if not b: continue if not c and not curses.tigetstr(e): # Most terminals don't support dim, invis, etc, so don't be # noisy and use ui.debug(). ui.debug("no terminfo entry for %s\n" % e) del color._terminfo_params[key] if not curses.tigetstr('setaf') or not curses.tigetstr('setab'): # Only warn about missing terminfo entries if we explicitly asked for # terminfo mode. if mode == "terminfo": ui.warn(_("no terminfo entry for setab/setaf: reverting to " "ECMA-48 color\n")) color._terminfo_params.clear() def _modesetup(ui, coloropt): if coloropt == 'debug': return 'debug' auto = (coloropt == 'auto') always = not auto and util.parsebool(coloropt) if not always and not auto: return None formatted = (always or (encoding.environ.get('TERM') != 'dumb' and ui.formatted())) mode = ui.config('color', 'mode', 'auto') # If pager is active, color.pagermode overrides color.mode. if getattr(ui, 'pageractive', False): mode = ui.config('color', 'pagermode', mode) realmode = mode if mode == 'auto': if pycompat.osname == 'nt': term = encoding.environ.get('TERM') # TERM won't be defined in a vanilla cmd.exe environment. # UNIX-like environments on Windows such as Cygwin and MSYS will # set TERM. They appear to make a best effort attempt at setting it # to something appropriate. However, not all environments with TERM # defined support ANSI. Since "ansi" could result in terminal # gibberish, we error on the side of selecting "win32". However, if # w32effects is not defined, we almost certainly don't support # "win32", so don't even try. if (term and 'xterm' in term) or not color.w32effects: realmode = 'ansi' else: realmode = 'win32' else: realmode = 'ansi' def modewarn(): # only warn if color.mode was explicitly set and we're in # a formatted terminal if mode == realmode and ui.formatted(): ui.warn(_('warning: failed to set color mode to %s\n') % mode) if realmode == 'win32': color._terminfo_params.clear() if not color.w32effects: modewarn() return None color._effects.update(color.w32effects) elif realmode == 'ansi': color._terminfo_params.clear() elif realmode == 'terminfo': _terminfosetup(ui, mode) if not color._terminfo_params: ## FIXME Shouldn't we return None in this case too? modewarn() realmode = 'ansi' else: return None if always or (auto and formatted): return realmode return None class colorui(uimod.ui): def write(self, *args, **opts): if self._colormode is None: return super(colorui, self).write(*args, **opts) label = opts.get('label', '') if self._buffers and not opts.get('prompt', False): if self._bufferapplylabels: self._buffers[-1].extend(self.label(a, label) for a in args) else: self._buffers[-1].extend(args) elif self._colormode == 'win32': for a in args: color.win32print(a, super(colorui, self).write, **opts) else: return super(colorui, self).write( *[self.label(a, label) for a in args], **opts) def write_err(self, *args, **opts): if self._colormode is None: return super(colorui, self).write_err(*args, **opts) label = opts.get('label', '') if self._bufferstates and self._bufferstates[-1][0]: return self.write(*args, **opts) if self._colormode == 'win32': for a in args: color.win32print(a, super(colorui, self).write_err, **opts) else: return super(colorui, self).write_err( *[self.label(a, label) for a in args], **opts) def showlabel(self, msg, label): if label and msg: if msg[-1] == '\n': return "[%s|%s]\n" % (label, msg[:-1]) else: return "[%s|%s]" % (label, msg) else: return msg def label(self, msg, label): if self._colormode is None: return super(colorui, self).label(msg, label) if self._colormode == 'debug': return self.showlabel(msg, label) effects = [] for l in label.split(): s = color._styles.get(l, '') if s: effects.append(s) elif color.valideffect(l): effects.append(l) effects = ' '.join(effects) if effects: return '\n'.join([color._render_effects(line, effects) for line in msg.split('\n')]) return msg def uisetup(ui): if ui.plain(): return if not isinstance(ui, colorui): colorui.__bases__ = (ui.__class__,) ui.__class__ = colorui def colorcmd(orig, ui_, opts, cmd, cmdfunc): mode = _modesetup(ui_, opts['color']) colorui._colormode = mode if mode and mode != 'debug': color.configstyles(ui_) return orig(ui_, opts, cmd, cmdfunc) def colorgit(orig, gitsub, commands, env=None, stream=False, cwd=None): if gitsub.ui._colormode and len(commands) and commands[0] == "diff": # insert the argument in the front, # the end of git diff arguments is used for paths commands.insert(1, '--color') return orig(gitsub, commands, env, stream, cwd) extensions.wrapfunction(dispatch, '_runcommand', colorcmd) extensions.wrapfunction(subrepo.gitsubrepo, '_gitnodir', colorgit) def extsetup(ui): commands.globalopts.append( ('', 'color', 'auto', # i18n: 'always', 'auto', 'never', and 'debug' are keywords # and should not be translated _("when to colorize (boolean, always, auto, never, or debug)"), _('TYPE'))) @command('debugcolor', [('', 'style', None, _('show all configured styles'))], 'hg debugcolor') def debugcolor(ui, repo, **opts): """show available color, effects or style""" ui.write(('color mode: %s\n') % ui._colormode) if opts.get('style'): return _debugdisplaystyle(ui) else: return _debugdisplaycolor(ui) def _debugdisplaycolor(ui): oldstyle = color._styles.copy() try: color._styles.clear() for effect in color._effects.keys(): color._styles[effect] = effect if color._terminfo_params: for k, v in ui.configitems('color'): if k.startswith('color.'): color._styles[k] = k[6:] elif k.startswith('terminfo.'): color._styles[k] = k[9:] ui.write(_('available colors:\n')) # sort label with a '_' after the other to group '_background' entry. items = sorted(color._styles.items(), key=lambda i: ('_' in i[0], i[0], i[1])) for colorname, label in items: ui.write(('%s\n') % colorname, label=label) finally: color._styles.clear() color._styles.update(oldstyle) def _debugdisplaystyle(ui): ui.write(_('available style:\n')) width = max(len(s) for s in color._styles) for label, effects in sorted(color._styles.items()): ui.write('%s' % label, label=label) if effects: # 50 ui.write(': ') ui.write(' ' * (max(0, width - len(label)))) ui.write(', '.join(ui.label(e, e) for e in effects.split())) ui.write('\n')