autorandr.py

   1 #!/usr/bin/env python
   2 # encoding: utf-8
   3 #
   4 # autorandr.py
   5 # Copyright (c) 2015, Phillip Berndt
   6 #
   7 # Autorandr rewrite in Python
   8 #
   9 # This script aims to be fully compatible with the original autorandr.
  10 #
  11 # This program is free software: you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation, either version 3 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
  23 #
  24
  25 from __future__ import print_function
  26
  27 import binascii
  28 import copy
  29 import fnmatch
  30 import getopt
  31 import hashlib
  32 import os
  33 import posix
  34 import pwd
  35 import re
  36 import subprocess
  37 import sys
  38 import shutil
  39 import time
  40
  41 from collections import OrderedDict
  42 from distutils.version import LooseVersion as Version
  43 from functools import reduce
  44 from itertools import chain
  45
  46 if sys.version_info.major == 2:
  47     import ConfigParser as configparser
  48 else:
  49     import configparser
  50
  51 __version__ = "1.5"
  52
  53 try:
  54     input = raw_input
  55 except NameError:
  56     pass
  57
  58 virtual_profiles = [
  59     # (name, description, callback)
  60     ("off", "Disable all outputs", None),
  61     ("common", "Clone all connected outputs at the largest common resolution", None),
  62     ("clone-largest", "Clone all connected outputs with the largest resolution (scaled down if necessary)", None),
  63     ("horizontal", "Stack all connected outputs horizontally at their largest resolution", None),
  64     ("vertical", "Stack all connected outputs vertically at their largest resolution", None),
  65 ]
  66
  67 help_text = """
  68 Usage: autorandr [options]
  69
  70 -h, --help              get this small help
  71 -c, --change            reload current setup
  72 -d, --default <profile> make profile <profile> the default profile
  73 -l, --load <profile>    load profile <profile>
  74 -s, --save <profile>    save your current setup to profile <profile>
  75 -r, --remove <profile>  remove profile <profile>
  76 --batch                 run autorandr for all users with active X11 sessions
  77 --current               only list current (active) configuration(s)
  78 --config                dump your current xrandr setup
  79 --debug                 enable verbose output
  80 --detected              only list detected (available) configuration(s)
  81 --dry-run               don't change anything, only print the xrandr commands
  82 --fingerprint           fingerprint your current hardware setup
  83 --force                 force (re)loading of a profile
  84 --skip-options <option> comma separated list of xrandr arguments (e.g. "gamma")
  85                         to skip both in detecting changes and applying a profile
  86 --version               show version information and exit
  87
  88  If no suitable profile can be identified, the current configuration is kept.
  89  To change this behaviour and switch to a fallback configuration, specify
  90  --default <profile>.
  91
  92  autorandr supports a set of per-profile and global hooks. See the documentation
  93  for details.
  94
  95  The following virtual configurations are available:
  96 """.strip()
  97
  98
  99 class AutorandrException(Exception):
 100     def __init__(self, message, original_exception=None, report_bug=False):
 101         self.message = message
 102         self.report_bug = report_bug
 103         if original_exception:
 104             self.original_exception = original_exception
 105             trace = sys.exc_info()[2]
 106             while trace.tb_next:
 107                 trace = trace.tb_next
 108             self.line = trace.tb_lineno
 109             self.file_name = trace.tb_frame.f_code.co_filename
 110         else:
 111             try:
 112                 import inspect
 113                 frame = inspect.currentframe().f_back
 114                 self.line = frame.f_lineno
 115                 self.file_name = frame.f_code.co_filename
 116             except:
 117                 self.line = None
 118                 self.file_name = None
 119             self.original_exception = None
 120
 121         if os.path.abspath(self.file_name) == os.path.abspath(sys.argv[0]):
 122             self.file_name = None
 123
 124     def __str__(self):
 125         retval = [self.message]
 126         if self.line:
 127             retval.append(" (line %d%s)" % (self.line, ("; %s" % self.file_name) if self.file_name else ""))
 128         if self.original_exception:
 129             retval.append(":\n  ")
 130             retval.append(str(self.original_exception).replace("\n", "\n  "))
 131         if self.report_bug:
 132             retval.append("\nThis appears to be a bug. Please help improving autorandr by reporting it upstream:"
 133                           "\nhttps://github.com/phillipberndt/autorandr/issues"
 134                           "\nPlease attach the output of `xrandr --verbose` to your bug report if appropriate.")
 135         return "".join(retval)
 136
 137
 138 class XrandrOutput(object):
 139     "Represents an XRandR output"
 140
 141     # This regular expression is used to parse an output in `xrandr --verbose'
 142     XRANDR_OUTPUT_REGEXP = """(?x)
 143         ^(?P<output>[^ ]+)\s+                                                           # Line starts with output name
 144         (?:                                                                             # Differentiate disconnected and connected
 145             disconnected |                                                              # in first line
 146             unknown\ connection |
 147             (?P<connected>connected)
 148         )
 149         \s*
 150         (?P<primary>primary\ )?                                                         # Might be primary screen
 151         (?:\s*
 152             (?P<width>[0-9]+)x(?P<height>[0-9]+)                                        # Resolution (might be overridden below!)
 153             \+(?P<x>-?[0-9]+)\+(?P<y>-?[0-9]+)\s+                                       # Position
 154             (?:\(0x[0-9a-fA-F]+\)\s+)?                                                  # XID
 155             (?P<rotate>(?:normal|left|right|inverted))\s+                               # Rotation
 156             (?:(?P<reflect>X\ and\ Y|X|Y)\ axis)?                                       # Reflection
 157         )?                                                                              # .. but only if the screen is in use.
 158         (?:[\ \t]*\([^\)]+\))(?:\s*[0-9]+mm\sx\s[0-9]+mm)?
 159         (?:[\ \t]*panning\ (?P<panning>[0-9]+x[0-9]+\+[0-9]+\+[0-9]+))?                 # Panning information
 160         (?:[\ \t]*tracking\ (?P<tracking>[0-9]+x[0-9]+\+[0-9]+\+[0-9]+))?               # Tracking information
 161         (?:[\ \t]*border\ (?P<border>(?:[0-9]+/){3}[0-9]+))?                            # Border information
 162         (?:\s*(?:                                                                       # Properties of the output
 163             Gamma: (?P<gamma>(?:inf|[0-9\.: e])+) |                                     # Gamma value
 164             Transform: (?P<transform>(?:[\-0-9\. ]+\s+){3}) |                           # Transformation matrix
 165             EDID: (?P<edid>\s*?(?:\\n\\t\\t[0-9a-f]+)+) |                               # EDID of the output
 166             (?![0-9])[^:\s][^:\n]+:.*(?:\s\\t[\\t ].+)*                                 # Other properties
 167         ))+
 168         \s*
 169         (?P<modes>(?:
 170             (?P<mode_name>\S+).+?\*current.*\s+                                         # Interesting (current) resolution:
 171              h:\s+width\s+(?P<mode_width>[0-9]+).+\s+                                   # Extract rate
 172              v:\s+height\s+(?P<mode_height>[0-9]+).+clock\s+(?P<rate>[0-9\.]+)Hz\s* |
 173             \S+(?:(?!\*current).)+\s+h:.+\s+v:.+\s*                                     # Other resolutions
 174         )*)
 175     """
 176
 177     XRANDR_OUTPUT_MODES_REGEXP = """(?x)
 178         (?P<name>\S+).+?(?P<preferred>\+preferred)?\s+
 179          h:\s+width\s+(?P<width>[0-9]+).+\s+
 180          v:\s+height\s+(?P<height>[0-9]+).+clock\s+(?P<rate>[0-9\.]+)Hz\s* |
 181     """
 182
 183     XRANDR_13_DEFAULTS = {
 184         "transform": "1,0,0,0,1,0,0,0,1",
 185         "panning": "0x0",
 186     }
 187
 188     XRANDR_12_DEFAULTS = {
 189         "reflect": "normal",
 190         "rotate": "normal",
 191         "gamma": "1.0:1.0:1.0",
 192     }
 193
 194     XRANDR_DEFAULTS = dict(list(XRANDR_13_DEFAULTS.items()) + list(XRANDR_12_DEFAULTS.items()))
 195
 196     EDID_UNAVAILABLE = "--CONNECTED-BUT-EDID-UNAVAILABLE-"
 197
 198     def __repr__(self):
 199         return "<%s%s %s>" % (self.output, self.short_edid, " ".join(self.option_vector))
 200
 201     @property
 202     def short_edid(self):
 203         return ("%s..%s" % (self.edid[:5], self.edid[-5:])) if self.edid else ""
 204
 205     @property
 206     def options_with_defaults(self):
 207         "Return the options dictionary, augmented with the default values that weren't set"
 208         if "off" in self.options:
 209             return self.options
 210         options = {}
 211         if xrandr_version() >= Version("1.3"):
 212             options.update(self.XRANDR_13_DEFAULTS)
 213         if xrandr_version() >= Version("1.2"):
 214             options.update(self.XRANDR_12_DEFAULTS)
 215         options.update(self.options)
 216         return {a: b for a, b in options.items() if a not in self.ignored_options}
 217
 218     @property
 219     def filtered_options(self):
 220         "Return a dictionary of options without ignored options"
 221         return {a: b for a, b in self.options.items() if a not in self.ignored_options}
 222
 223     @property
 224     def option_vector(self):
 225         "Return the command line parameters for XRandR for this instance"
 226         args = ["--output", self.output]
 227         for option, arg in sorted(self.options_with_defaults.items()):
 228             args.append("--%s" % option)
 229             if arg:
 230                 args.append(arg)
 231         return args
 232
 233     @property
 234     def option_string(self):
 235         "Return the command line parameters in the configuration file format"
 236         options = ["output %s" % self.output]
 237         for option, arg in sorted(self.filtered_options.items()):
 238             if arg:
 239                 options.append("%s %s" % (option, arg))
 240             else:
 241                 options.append(option)
 242         return "\n".join(options)
 243
 244     @property
 245     def sort_key(self):
 246         "Return a key to sort the outputs for xrandr invocation"
 247         if not self.edid:
 248             return -2
 249         if "off" in self.options:
 250             return -1
 251         if "pos" in self.options:
 252             x, y = map(float, self.options["pos"].split("x"))
 253         else:
 254             x, y = 0, 0
 255         return x + 10000 * y
 256
 257     def __init__(self, output, edid, options):
 258         "Instanciate using output name, edid and a dictionary of XRandR command line parameters"
 259         self.output = output
 260         self.edid = edid
 261         self.options = options
 262         self.ignored_options = []
 263         self.remove_default_option_values()
 264
 265     def set_ignored_options(self, options):
 266         "Set a list of xrandr options that are never used (neither when comparing configurations nor when applying them)"
 267         self.ignored_options = list(options)
 268
 269     def remove_default_option_values(self):
 270         "Remove values from the options dictionary that are superflous"
 271         if "off" in self.options and len(self.options.keys()) > 1:
 272             self.options = {"off": None}
 273             return
 274         for option, default_value in self.XRANDR_DEFAULTS.items():
 275             if option in self.options and self.options[option] == default_value:
 276                 del self.options[option]
 277
 278     @classmethod
 279     def from_xrandr_output(cls, xrandr_output):
 280         """Instanciate an XrandrOutput from the output of `xrandr --verbose'
 281
 282         This method also returns a list of modes supported by the output.
 283         """
 284         try:
 285             xrandr_output = xrandr_output.replace("\r\n", "\n")
 286             match_object = re.search(XrandrOutput.XRANDR_OUTPUT_REGEXP, xrandr_output)
 287         except:
 288             raise AutorandrException("Parsing XRandR output failed, there is an error in the regular expression.",
 289                                      report_bug=True)
 290         if not match_object:
 291             debug = debug_regexp(XrandrOutput.XRANDR_OUTPUT_REGEXP, xrandr_output)
 292             raise AutorandrException("Parsing XRandR output failed, the regular expression did not match: %s" % debug,
 293                                      report_bug=True)
 294         remainder = xrandr_output[len(match_object.group(0)):]
 295         if remainder:
 296             raise AutorandrException("Parsing XRandR output failed, %d bytes left unmatched after "
 297                                      "regular expression, starting at byte %d with ..'%s'." %
 298                                      (len(remainder), len(match_object.group(0)), remainder[:10]),
 299                                      report_bug=True)
 300
 301         match = match_object.groupdict()
 302
 303         modes = []
 304         if match["modes"]:
 305             modes = []
 306             for mode_match in re.finditer(XrandrOutput.XRANDR_OUTPUT_MODES_REGEXP, match["modes"]):
 307                 if mode_match.group("name"):
 308                     modes.append(mode_match.groupdict())
 309             if not modes:
 310                 raise AutorandrException("Parsing XRandR output failed, couldn't find any display modes", report_bug=True)
 311
 312         options = {}
 313         if not match["connected"]:
 314             edid = None
 315         elif match["edid"]:
 316             edid = "".join(match["edid"].strip().split())
 317         else:
 318             edid = "%s-%s" % (XrandrOutput.EDID_UNAVAILABLE, match["output"])
 319
 320         if not match["width"]:
 321             options["off"] = None
 322         else:
 323             if match["mode_name"]:
 324                 options["mode"] = match["mode_name"]
 325             elif match["mode_width"]:
 326                 options["mode"] = "%sx%s" % (match["mode_width"], match["mode_height"])
 327             else:
 328                 if match["rotate"] not in ("left", "right"):
 329                     options["mode"] = "%sx%s" % (match["width"], match["height"])
 330                 else:
 331                     options["mode"] = "%sx%s" % (match["height"], match["width"])
 332             options["rotate"] = match["rotate"]
 333             if match["primary"]:
 334                 options["primary"] = None
 335             if match["reflect"] == "X":
 336                 options["reflect"] = "x"
 337             elif match["reflect"] == "Y":
 338                 options["reflect"] = "y"
 339             elif match["reflect"] == "X and Y":
 340                 options["reflect"] = "xy"
 341             options["pos"] = "%sx%s" % (match["x"], match["y"])
 342             if match["panning"]:
 343                 panning = [match["panning"]]
 344                 if match["tracking"]:
 345                     panning += ["/", match["tracking"]]
 346                     if match["border"]:
 347                         panning += ["/", match["border"]]
 348                 options["panning"] = "".join(panning)
 349             if match["transform"]:
 350                 transformation = ",".join(match["transform"].strip().split())
 351                 if transformation != "1.000000,0.000000,0.000000,0.000000,1.000000,0.000000,0.000000,0.000000,1.000000":
 352                     options["transform"] = transformation
 353                     if not match["mode_name"]:
 354                         # TODO We'd need to apply the reverse transformation here. Let's see if someone complains,
 355                         # I doubt that this special case is actually required.
 356                         print("Warning: Output %s has a transformation applied. Could not determine correct mode! "
 357                               "Using `%s'." % (match["output"], options["mode"]), file=sys.stderr)
 358             if match["gamma"]:
 359                 gamma = match["gamma"].strip()
 360                 # xrandr prints different values in --verbose than it accepts as a parameter value for --gamma
 361                 # Also, it is not able to work with non-standard gamma ramps. Finally, it auto-corrects 0 to 1,
 362                 # so we approximate by 1e-10.
 363                 gamma = ":".join([str(max(1e-10, round(1. / float(x), 3))) for x in gamma.split(":")])
 364                 options["gamma"] = gamma
 365             if match["rate"]:
 366                 options["rate"] = match["rate"]
 367
 368         return XrandrOutput(match["output"], edid, options), modes
 369
 370     @classmethod
 371     def from_config_file(cls, edid_map, configuration):
 372         "Instanciate an XrandrOutput from the contents of a configuration file"
 373         options = {}
 374         for line in configuration.split("\n"):
 375             if line:
 376                 line = line.split(None, 1)
 377                 if line and line[0].startswith("#"):
 378                     continue
 379                 options[line[0]] = line[1] if len(line) > 1 else None
 380
 381         edid = None
 382
 383         if options["output"] in edid_map:
 384             edid = edid_map[options["output"]]
 385         else:
 386             # This fuzzy matching is for legacy autorandr that used sysfs output names
 387             fuzzy_edid_map = [re.sub("(card[0-9]+|-)", "", x) for x in edid_map.keys()]
 388             fuzzy_output = re.sub("(card[0-9]+|-)", "", options["output"])
 389             if fuzzy_output in fuzzy_edid_map:
 390                 edid = edid_map[list(edid_map.keys())[fuzzy_edid_map.index(fuzzy_output)]]
 391             elif "off" not in options:
 392                 raise AutorandrException("Failed to find an EDID for output `%s' in setup file, required as `%s' "
 393                                          "is not off in config file." % (options["output"], options["output"]))
 394         output = options["output"]
 395         del options["output"]
 396
 397         return XrandrOutput(output, edid, options)
 398
 399     def edid_equals(self, other):
 400         "Compare to another XrandrOutput's edid and on/off-state, taking legacy autorandr behaviour (md5sum'ing) into account"
 401         if self.edid and other.edid:
 402             if len(self.edid) == 32 and len(other.edid) != 32 and not other.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
 403                 return hashlib.md5(binascii.unhexlify(other.edid)).hexdigest() == self.edid
 404             if len(self.edid) != 32 and len(other.edid) == 32 and not self.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
 405                 return hashlib.md5(binascii.unhexlify(self.edid)).hexdigest() == other.edid
 406             if "*" in self.edid:
 407                 return fnmatch.fnmatch(other.edid, self.edid)
 408             elif "*" in other.edid:
 409                 return fnmatch.fnmatch(self.edid, other.edid)
 410         return self.edid == other.edid
 411
 412     def __ne__(self, other):
 413         return not (self == other)
 414
 415     def __eq__(self, other):
 416         return self.edid_equals(other) and self.output == other.output and self.filtered_options == other.filtered_options
 417
 418     def verbose_diff(self, other):
 419         "Compare to another XrandrOutput and return a list of human readable differences"
 420         diffs = []
 421         if not self.edid_equals(other):
 422             diffs.append("EDID `%s' differs from `%s'" % (self.short_edid, other.short_edid))
 423         if self.output != other.output:
 424             diffs.append("Output name `%s' differs from `%s'" % (self.output, other.output))
 425         if "off" in self.options and "off" not in other.options:
 426             diffs.append("The output is disabled currently, but active in the new configuration")
 427         elif "off" in other.options and "off" not in self.options:
 428             diffs.append("The output is currently enabled, but inactive in the new configuration")
 429         else:
 430             for name in set(chain.from_iterable((self.options.keys(), other.options.keys()))):
 431                 if name not in other.options:
 432                     diffs.append("Option --%s %sis not present in the new configuration" %
 433                                  (name, "(= `%s') " % self.options[name] if self.options[name] else ""))
 434                 elif name not in self.options:
 435                     diffs.append("Option --%s (`%s' in the new configuration) is not present currently" %
 436                                  (name, other.options[name]))
 437                 elif self.options[name] != other.options[name]:
 438                     diffs.append("Option --%s %sis `%s' in the new configuration" %
 439                                  (name, "(= `%s') " % self.options[name] if self.options[name] else "", other.options[name]))
 440         return diffs
 441
 442
 443 def xrandr_version():
 444     "Return the version of XRandR that this system uses"
 445     if getattr(xrandr_version, "version", False) is False:
 446         version_string = os.popen("xrandr -v").read()
 447         try:
 448             version = re.search("xrandr program version\s+([0-9\.]+)", version_string).group(1)
 449             xrandr_version.version = Version(version)
 450         except AttributeError:
 451             xrandr_version.version = Version("1.3.0")
 452
 453     return xrandr_version.version
 454
 455
 456 def debug_regexp(pattern, string):
 457     "Use the partial matching functionality of the regex module to display debug info on a non-matching regular expression"
 458     try:
 459         import regex
 460         bounds = (0, len(string))
 461         while bounds[0] != bounds[1]:
 462             half = int((bounds[0] + bounds[1]) / 2)
 463             if half == bounds[0]:
 464                 break
 465             bounds = (half, bounds[1]) if regex.search(pattern, string[:half], partial=True) else (bounds[0], half - 1)
 466         partial_length = bounds[0]
 467         return ("Regular expression matched until position %d, ..'%s', and did not match from '%s'.." %
 468                 (partial_length, string[max(0, partial_length - 20):partial_length],
 469                  string[partial_length:partial_length + 10]))
 470     except ImportError:
 471         pass
 472     return "Debug information would be available if the `regex' module was installed."
 473
 474
 475 def parse_xrandr_output():
 476     "Parse the output of `xrandr --verbose' into a list of outputs"
 477     xrandr_output = os.popen("xrandr -q --verbose").read()
 478     if not xrandr_output:
 479         raise AutorandrException("Failed to run xrandr")
 480
 481     # We are not interested in screens
 482     xrandr_output = re.sub("(?m)^Screen [0-9].+", "", xrandr_output).strip()
 483
 484     # Split at output boundaries and instanciate an XrandrOutput per output
 485     split_xrandr_output = re.split("(?m)^([^ ]+ (?:(?:dis)?connected|unknown connection).*)$", xrandr_output)
 486     if len(split_xrandr_output) < 2:
 487         raise AutorandrException("No output boundaries found", report_bug=True)
 488     outputs = OrderedDict()
 489     modes = OrderedDict()
 490     for i in range(1, len(split_xrandr_output), 2):
 491         output_name = split_xrandr_output[i].split()[0]
 492         output, output_modes = XrandrOutput.from_xrandr_output("".join(split_xrandr_output[i:i + 2]))
 493         outputs[output_name] = output
 494         if output_modes:
 495             modes[output_name] = output_modes
 496
 497     return outputs, modes
 498
 499
 500 def load_profiles(profile_path):
 501     "Load the stored profiles"
 502
 503     profiles = {}
 504     for profile in os.listdir(profile_path):
 505         config_name = os.path.join(profile_path, profile, "config")
 506         setup_name = os.path.join(profile_path, profile, "setup")
 507         if not os.path.isfile(config_name) or not os.path.isfile(setup_name):
 508             continue
 509
 510         edids = dict([x.split() for x in (y.strip() for y in open(setup_name).readlines()) if x and x[0] != "#"])
 511
 512         config = {}
 513         buffer = []
 514         for line in chain(open(config_name).readlines(), ["output"]):
 515             if line[:6] == "output" and buffer:
 516                 config[buffer[0].strip().split()[-1]] = XrandrOutput.from_config_file(edids, "".join(buffer))
 517                 buffer = [line]
 518             else:
 519                 buffer.append(line)
 520
 521         for output_name in list(config.keys()):
 522             if config[output_name].edid is None:
 523                 del config[output_name]
 524
 525         profiles[profile] = {
 526             "config": config,
 527             "path": os.path.join(profile_path, profile),
 528             "config-mtime": os.stat(config_name).st_mtime,
 529         }
 530
 531     return profiles
 532
 533
 534 def get_symlinks(profile_path):
 535     "Load all symlinks from a directory"
 536
 537     symlinks = {}
 538     for link in os.listdir(profile_path):
 539         file_name = os.path.join(profile_path, link)
 540         if os.path.islink(file_name):
 541             symlinks[link] = os.readlink(file_name)
 542
 543     return symlinks
 544
 545
 546 def find_profiles(current_config, profiles):
 547     "Find profiles matching the currently connected outputs"
 548     detected_profiles = []
 549     for profile_name, profile in profiles.items():
 550         config = profile["config"]
 551         matches = True
 552         for name, output in config.items():
 553             if not output.edid:
 554                 continue
 555             if name not in current_config or not output.edid_equals(current_config[name]):
 556                 matches = False
 557                 break
 558         if not matches or any((name not in config.keys() for name in current_config.keys() if current_config[name].edid)):
 559             continue
 560         if matches:
 561             detected_profiles.append(profile_name)
 562     return detected_profiles
 563
 564
 565 def profile_blocked(profile_path, meta_information=None):
 566     """Check if a profile is blocked.
 567
 568     meta_information is expected to be an dictionary. It will be passed to the block scripts
 569     in the environment, as variables called AUTORANDR_<CAPITALIZED_KEY_HERE>.
 570     """
 571     return not exec_scripts(profile_path, "block", meta_information)
 572
 573
 574 def output_configuration(configuration, config):
 575     "Write a configuration file"
 576     outputs = sorted(configuration.keys(), key=lambda x: configuration[x].sort_key)
 577     for output in outputs:
 578         print(configuration[output].option_string, file=config)
 579
 580
 581 def output_setup(configuration, setup):
 582     "Write a setup (fingerprint) file"
 583     outputs = sorted(configuration.keys())
 584     for output in outputs:
 585         if configuration[output].edid:
 586             print(output, configuration[output].edid, file=setup)
 587
 588
 589 def save_configuration(profile_path, configuration):
 590     "Save a configuration into a profile"
 591     if not os.path.isdir(profile_path):
 592         os.makedirs(profile_path)
 593     with open(os.path.join(profile_path, "config"), "w") as config:
 594         output_configuration(configuration, config)
 595     with open(os.path.join(profile_path, "setup"), "w") as setup:
 596         output_setup(configuration, setup)
 597
 598
 599 def update_mtime(filename):
 600     "Update a file's mtime"
 601     try:
 602         os.utime(filename, None)
 603         return True
 604     except:
 605         return False
 606
 607
 608 def call_and_retry(*args, **kwargs):
 609     """Wrapper around subprocess.call that retries failed calls.
 610
 611     This function calls subprocess.call and on non-zero exit states,
 612     waits a second and then retries once. This mitigates #47,
 613     a timing issue with some drivers.
 614     """
 615     if "dry_run" in kwargs:
 616         dry_run = kwargs["dry_run"]
 617         del kwargs["dry_run"]
 618     else:
 619         dry_run = False
 620     kwargs_redirected = dict(kwargs)
 621     if not dry_run:
 622         if hasattr(subprocess, "DEVNULL"):
 623             kwargs_redirected["stdout"] = getattr(subprocess, "DEVNULL")
 624         else:
 625             kwargs_redirected["stdout"] = open(os.devnull, "w")
 626         kwargs_redirected["stderr"] = kwargs_redirected["stdout"]
 627     retval = subprocess.call(*args, **kwargs_redirected)
 628     if retval != 0:
 629         time.sleep(1)
 630         retval = subprocess.call(*args, **kwargs)
 631     return retval
 632
 633
 634 def apply_configuration(new_configuration, current_configuration, dry_run=False):
 635     "Apply a configuration"
 636     outputs = sorted(new_configuration.keys(), key=lambda x: new_configuration[x].sort_key)
 637     if dry_run:
 638         base_argv = ["echo", "xrandr"]
 639     else:
 640         base_argv = ["xrandr"]
 641
 642     # There are several xrandr / driver bugs we need to take care of here:
 643     # - We cannot enable more than two screens at the same time
 644     #   See https://github.com/phillipberndt/autorandr/pull/6
 645     #   and commits f4cce4d and 8429886.
 646     # - We cannot disable all screens
 647     #   See https://github.com/phillipberndt/autorandr/pull/20
 648     # - We should disable screens before enabling others, because there's
 649     #   a limit on the number of enabled screens
 650     # - We must make sure that the screen at 0x0 is activated first,
 651     #   or the other (first) screen to be activated would be moved there.
 652     # - If an active screen already has a transformation and remains active,
 653     #   the xrandr call fails with an invalid RRSetScreenSize parameter error.
 654     #   Update the configuration in 3 passes in that case.  (On Haswell graphics,
 655     #   at least.)
 656     # - Some implementations can not handle --transform at all, so avoid it unless
 657     #   necessary. (See https://github.com/phillipberndt/autorandr/issues/37)
 658     # - Some implementations can not handle --panning without specifying --fb
 659     #   explicitly, so avoid it unless necessary.
 660     #   (See https://github.com/phillipberndt/autorandr/issues/72)
 661
 662     auxiliary_changes_pre = []
 663     disable_outputs = []
 664     enable_outputs = []
 665     remain_active_count = 0
 666     for output in outputs:
 667         if not new_configuration[output].edid or "off" in new_configuration[output].options:
 668             disable_outputs.append(new_configuration[output].option_vector)
 669         else:
 670             if "off" not in current_configuration[output].options:
 671                 remain_active_count += 1
 672
 673             option_vector = new_configuration[output].option_vector
 674             if xrandr_version() >= Version("1.3.0"):
 675                 for option, off_value in (("transform", "none"), ("panning", "0x0")):
 676                     if option in current_configuration[output].options:
 677                         auxiliary_changes_pre.append(["--output", output, "--%s" % option, off_value])
 678                     else:
 679                         try:
 680                             option_index = option_vector.index("--%s" % option)
 681                             if option_vector[option_index + 1] == XrandrOutput.XRANDR_DEFAULTS[option]:
 682                                 option_vector = option_vector[:option_index] + option_vector[option_index + 2:]
 683                         except ValueError:
 684                             pass
 685
 686             enable_outputs.append(option_vector)
 687
 688     # Perform pe-change auxiliary changes
 689     if auxiliary_changes_pre:
 690         argv = base_argv + list(chain.from_iterable(auxiliary_changes_pre))
 691         if call_and_retry(argv, dry_run=dry_run) != 0:
 692             raise AutorandrException("Command failed: %s" % " ".join(argv))
 693
 694     # Disable unused outputs, but make sure that there always is at least one active screen
 695     disable_keep = 0 if remain_active_count else 1
 696     if len(disable_outputs) > disable_keep:
 697         argv = base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))
 698         if call_and_retry(argv, dry_run=dry_run) != 0:
 699             # Disabling the outputs failed. Retry with the next command:
 700             # Sometimes disabling of outputs fails due to an invalid RRSetScreenSize.
 701             # This does not occur if simultaneously the primary screen is reset.
 702             pass
 703         else:
 704             disable_outputs = disable_outputs[-1:] if disable_keep else []
 705
 706     # If disable_outputs still has more than one output in it, one of the xrandr-calls below would
 707     # disable the last two screens. This is a problem, so if this would happen, instead disable only
 708     # one screen in the first call below.
 709     if len(disable_outputs) > 0 and len(disable_outputs) % 2 == 0:
 710         # In the context of a xrandr call that changes the display state, `--query' should do nothing
 711         disable_outputs.insert(0, ['--query'])
 712
 713     # Enable the remaining outputs in pairs of two operations
 714     operations = disable_outputs + enable_outputs
 715     for index in range(0, len(operations), 2):
 716         argv = base_argv + list(chain.from_iterable(operations[index:index + 2]))
 717         if call_and_retry(argv, dry_run=dry_run) != 0:
 718             raise AutorandrException("Command failed: %s" % " ".join(argv))
 719
 720
 721 def is_equal_configuration(source_configuration, target_configuration):
 722     "Check if all outputs from target are already configured correctly in source"
 723     for output in target_configuration.keys():
 724         if (output not in source_configuration) or (source_configuration[output] != target_configuration[output]):
 725             return False
 726     return True
 727
 728
 729 def add_unused_outputs(source_configuration, target_configuration):
 730     "Add outputs that are missing in target to target, in 'off' state"
 731     for output_name, output in source_configuration.items():
 732         if output_name not in target_configuration:
 733             target_configuration[output_name] = XrandrOutput(output_name, output.edid, {"off": None})
 734
 735
 736 def remove_irrelevant_outputs(source_configuration, target_configuration):
 737     "Remove outputs from target that ought to be 'off' and already are"
 738     for output_name, output in source_configuration.items():
 739         if "off" in output.options:
 740             if output_name in target_configuration:
 741                 if "off" in target_configuration[output_name].options:
 742                     del target_configuration[output_name]
 743
 744
 745 def generate_virtual_profile(configuration, modes, profile_name):
 746     "Generate one of the virtual profiles"
 747     configuration = copy.deepcopy(configuration)
 748     if profile_name == "common":
 749         mode_sets = []
 750         for output, output_modes in modes.items():
 751             mode_set = set()
 752             if configuration[output].edid:
 753                 for mode in output_modes:
 754                     mode_set.add((mode["width"], mode["height"]))
 755             mode_sets.append(mode_set)
 756         common_resolution = reduce(lambda a, b: a & b, mode_sets[1:], mode_sets[0])
 757         common_resolution = sorted(common_resolution, key=lambda a: int(a[0]) * int(a[1]))
 758         if common_resolution:
 759             for output in configuration:
 760                 configuration[output].options = {}
 761                 if output in modes and configuration[output].edid:
 762                     modes_sorted = sorted(modes[output], key=lambda x: 0 if x["preferred"] else 1)
 763                     modes_filtered = [x for x in modes_sorted if (x["width"], x["height"]) == common_resolution[-1]]
 764                     mode = modes_filtered[0]
 765                     configuration[output].options["mode"] = mode['name']
 766                     configuration[output].options["pos"] = "0x0"
 767                 else:
 768                     configuration[output].options["off"] = None
 769     elif profile_name in ("horizontal", "vertical"):
 770         shift = 0
 771         if profile_name == "horizontal":
 772             shift_index = "width"
 773             pos_specifier = "%sx0"
 774         else:
 775             shift_index = "height"
 776             pos_specifier = "0x%s"
 777
 778         for output in configuration:
 779             configuration[output].options = {}
 780             if output in modes and configuration[output].edid:
 781                 def key(a):
 782                     score = int(a["width"]) * int(a["height"])
 783                     if a["preferred"]:
 784                         score += 10**6
 785                     return score
 786                 output_modes = sorted(modes[output], key=key)
 787                 mode = output_modes[-1]
 788                 configuration[output].options["mode"] = mode["name"]
 789                 configuration[output].options["rate"] = mode["rate"]
 790                 configuration[output].options["pos"] = pos_specifier % shift
 791                 shift += int(mode[shift_index])
 792             else:
 793                 configuration[output].options["off"] = None
 794     elif profile_name == "clone-largest":
 795         modes_unsorted = [output_modes[0] for output, output_modes in modes.items()]
 796         modes_sorted = sorted(modes_unsorted, key=lambda x: int(x["width"]) * int(x["height"]), reverse=True)
 797         biggest_resolution = modes_sorted[0]
 798         for output in configuration:
 799             configuration[output].options = {}
 800             if output in modes and configuration[output].edid:
 801                 def key(a):
 802                     score = int(a["width"]) * int(a["height"])
 803                     if a["preferred"]:
 804                         score += 10**6
 805                     return score
 806                 output_modes = sorted(modes[output], key=key)
 807                 mode = output_modes[-1]
 808                 configuration[output].options["mode"] = mode["name"]
 809                 configuration[output].options["rate"] = mode["rate"]
 810                 configuration[output].options["pos"] = "0x0"
 811                 scale = max(float(biggest_resolution["width"]) / float(mode["width"]),
 812                             float(biggest_resolution["height"]) / float(mode["height"]))
 813                 mov_x = (float(mode["width"]) * scale - float(biggest_resolution["width"])) / -2
 814                 mov_y = (float(mode["height"]) * scale - float(biggest_resolution["height"])) / -2
 815                 configuration[output].options["transform"] = "{},0,{},0,{},{},0,0,1".format(scale, mov_x, scale, mov_y)
 816             else:
 817                 configuration[output].options["off"] = None
 818     elif profile_name == "off":
 819         for output in configuration:
 820             for key in list(configuration[output].options.keys()):
 821                 del configuration[output].options[key]
 822             configuration[output].options["off"] = None
 823     return configuration
 824
 825
 826 def print_profile_differences(one, another):
 827     "Print the differences between two profiles for debugging"
 828     if one == another:
 829         return
 830     print("| Differences between the two profiles:")
 831     for output in set(chain.from_iterable((one.keys(), another.keys()))):
 832         if output not in one:
 833             if "off" not in another[output].options:
 834                 print("| Output `%s' is missing from the active configuration" % output)
 835         elif output not in another:
 836             if "off" not in one[output].options:
 837                 print("| Output `%s' is missing from the new configuration" % output)
 838         else:
 839             for line in one[output].verbose_diff(another[output]):
 840                 print("| [Output %s] %s" % (output, line))
 841     print("\\-")
 842
 843
 844 def exit_help():
 845     "Print help and exit"
 846     print(help_text)
 847     for profile in virtual_profiles:
 848         name, description = profile[:2]
 849         description = [description]
 850         max_width = 78 - 18
 851         while len(description[0]) > max_width + 1:
 852             left_over = description[0][max_width:]
 853             description[0] = description[0][:max_width] + "-"
 854             description.insert(1, "  %-15s %s" % ("", left_over))
 855         description = "\n".join(description)
 856         print("  %-15s %s" % (name, description))
 857     sys.exit(0)
 858
 859
 860 def exec_scripts(profile_path, script_name, meta_information=None):
 861     """"Run userscripts
 862
 863     This will run all executables from the profile folder, and global per-user
 864     and system-wide configuration folders, named script_name or residing in
 865     subdirectories named script_name.d.
 866
 867     If profile_path is None, only global scripts will be invoked.
 868
 869     meta_information is expected to be an dictionary. It will be passed to the block scripts
 870     in the environment, as variables called AUTORANDR_<CAPITALIZED_KEY_HERE>.
 871
 872     Returns True unless any of the scripts exited with non-zero exit status.
 873     """
 874     all_ok = True
 875     env = os.environ.copy()
 876     if meta_information:
 877         for key, value in meta_information.items():
 878             env["AUTORANDR_{}".format(key.upper())] = str(value)
 879
 880     # If there are multiple candidates, the XDG spec tells to only use the first one.
 881     ran_scripts = set()
 882
 883     user_profile_path = os.path.expanduser("~/.autorandr")
 884     if not os.path.isdir(user_profile_path):
 885         user_profile_path = os.path.join(os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), "autorandr")
 886
 887     candidate_directories = [user_profile_path]
 888     for config_dir in os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":"):
 889         candidate_directories.append(os.path.join(config_dir, "autorandr"))
 890     if profile_path:
 891         candidate_directories.append(profile_path)
 892
 893     for folder in candidate_directories:
 894         if script_name not in ran_scripts:
 895             script = os.path.join(folder, script_name)
 896             if os.access(script, os.X_OK | os.F_OK):
 897                 try:
 898                     all_ok &= subprocess.call(script, env=env) != 0
 899                 except:
 900                     raise AutorandrException("Failed to execute user command: %s" % (script,))
 901                 ran_scripts.add(script_name)
 902
 903         script_folder = os.path.join(folder, "%s.d" % script_name)
 904         if os.access(script_folder, os.R_OK | os.X_OK) and os.path.isdir(script_folder):
 905             for file_name in os.listdir(script_folder):
 906                 check_name = "d/%s" % (file_name,)
 907                 if check_name not in ran_scripts:
 908                     script = os.path.join(script_folder, file_name)
 909                     if os.access(script, os.X_OK | os.F_OK):
 910                         try:
 911                             all_ok &= subprocess.call(script, env=env) != 0
 912                         except:
 913                             raise AutorandrException("Failed to execute user command: %s" % (script,))
 914                         ran_scripts.add(check_name)
 915
 916     return all_ok
 917
 918
 919 def dispatch_call_to_sessions(argv):
 920     """Invoke autorandr for each open local X11 session with the given options.
 921
 922     The function iterates over all processes not owned by root and checks
 923     whether they have DISPLAY and XAUTHORITY variables set. It strips the
 924     screen from any variable it finds (i.e. :0.0 becomes :0) and checks whether
 925     this display has been handled already. If it has not, it forks, changes
 926     uid/gid to the user owning the process, reuses the process's environment
 927     and runs autorandr with the parameters from argv.
 928
 929     This function requires root permissions. It only works for X11 servers that
 930     have at least one non-root process running. It is susceptible for attacks
 931     where one user runs a process with another user's DISPLAY variable - in
 932     this case, it might happen that autorandr is invoked for the other user,
 933     which won't work. Since no other harm than prevention of automated
 934     execution of autorandr can be done this way, the assumption is that in this
 935     situation, the local administrator will handle the situation."""
 936
 937     X11_displays_done = set()
 938
 939     autorandr_binary = os.path.abspath(argv[0])
 940     backup_candidates = {}
 941
 942     def fork_child_autorandr(pwent, process_environ):
 943         print("Running autorandr as %s for display %s" % (pwent.pw_name, process_environ["DISPLAY"]))
 944         child_pid = os.fork()
 945         if child_pid == 0:
 946             # This will throw an exception if any of the privilege changes fails,
 947             # so it should be safe. Also, note that since the environment
 948             # is taken from a process owned by the user, reusing it should
 949             # not leak any information.
 950             os.setgroups([])
 951             os.setresgid(pwent.pw_gid, pwent.pw_gid, pwent.pw_gid)
 952             os.setresuid(pwent.pw_uid, pwent.pw_uid, pwent.pw_uid)
 953             os.chdir(pwent.pw_dir)
 954             os.environ.clear()
 955             os.environ.update(process_environ)
 956             os.execl(autorandr_binary, autorandr_binary, *argv[1:])
 957             os.exit(1)
 958         os.waitpid(child_pid, 0)
 959
 960     for directory in os.listdir("/proc"):
 961         directory = os.path.join("/proc/", directory)
 962         if not os.path.isdir(directory):
 963             continue
 964         environ_file = os.path.join(directory, "environ")
 965         if not os.path.isfile(environ_file):
 966             continue
 967         uid = os.stat(environ_file).st_uid
 968
 969         # The following line assumes that user accounts start at 1000 and that
 970         # no one works using the root or another system account. This is rather
 971         # restrictive, but de facto default. Alternatives would be to use the
 972         # UID_MIN from /etc/login.defs or FIRST_UID from /etc/adduser.conf;
 973         # but effectively, both values aren't binding in any way.
 974         # If this breaks your use case, please file a bug on Github.
 975         if uid < 1000:
 976             continue
 977
 978         process_environ = {}
 979         for environ_entry in open(environ_file).read().split("\0"):
 980             name, sep, value = environ_entry.partition("=")
 981             if name and sep:
 982                 if name == "DISPLAY" and "." in value:
 983                     value = value[:value.find(".")]
 984                 process_environ[name] = value
 985
 986         if "DISPLAY" not in process_environ:
 987             # Cannot work with this environment, skip.
 988             continue
 989
 990         # To allow scripts to detect batch invocation (especially useful for predetect)
 991         process_environ["AUTORANDR_BATCH_PID"] = str(os.getpid())
 992         process_environ["UID"] = str(uid)
 993
 994         display = process_environ["DISPLAY"]
 995
 996         if "XAUTHORITY" not in process_environ:
 997             # It's very likely that we cannot work with this environment either,
 998             # but keep it as a backup just in case we don't find anything else.
 999             backup_candidates[display] = process_environ
1000             continue
1001
1002         if display not in X11_displays_done:
1003             try:
1004                 pwent = pwd.getpwuid(uid)
1005             except KeyError:
1006                 # User has no pwd entry
1007                 continue
1008
1009             fork_child_autorandr(pwent, process_environ)
1010             X11_displays_done.add(display)
1011
1012     # Run autorandr for any users/displays which didn't have a process with
1013     # XAUTHORITY set.
1014     for display, process_environ in backup_candidates.items():
1015         if display not in X11_displays_done:
1016             try:
1017                 pwent = pwd.getpwuid(int(process_environ["UID"]))
1018             except KeyError:
1019                 # User has no pwd entry
1020                 continue
1021
1022             fork_child_autorandr(pwent, process_environ)
1023             X11_displays_done.add(display)
1024
1025
1026 def read_config(options, directory):
1027     """Parse a configuration config.ini from directory and merge it into
1028     the options dictionary"""
1029     config = configparser.ConfigParser()
1030     config.read(os.path.join(directory, "settings.ini"))
1031     if config.has_section("config"):
1032         for key, value in config.items("config"):
1033             options.setdefault("--%s" % key, value)
1034
1035 def main(argv):
1036     try:
1037         opts, args = getopt.getopt(argv[1:], "s:r:l:d:cfh",
1038                                    ["batch", "dry-run", "change", "default=", "save=", "remove=", "load=",
1039                                     "force", "fingerprint", "config", "debug", "skip-options=", "help",
1040                                     "current", "detected", "version"])
1041     except getopt.GetoptError as e:
1042         print("Failed to parse options: {0}.\n"
1043               "Use --help to get usage information.".format(str(e)),
1044               file=sys.stderr)
1045         sys.exit(posix.EX_USAGE)
1046
1047     options = dict(opts)
1048
1049     if "-h" in options or "--help" in options:
1050         exit_help()
1051
1052     if "--version" in options:
1053         print("autorandr " + __version__)
1054         sys.exit(0)
1055
1056     if "--current" in options and "--detected" in options:
1057         print("--current and --detected are mutually exclusive.", file=sys.stderr)
1058         sys.exit(posix.EX_USAGE)
1059
1060     # Batch mode
1061     if "--batch" in options:
1062         if ("DISPLAY" not in os.environ or not os.environ["DISPLAY"]) and os.getuid() == 0:
1063             dispatch_call_to_sessions([x for x in argv if x != "--batch"])
1064         else:
1065             print("--batch mode can only be used by root and if $DISPLAY is unset")
1066         return
1067     if "AUTORANDR_BATCH_PID" in os.environ:
1068         user = pwd.getpwuid(os.getuid())
1069         user = user.pw_name if user else "#%d" % os.getuid()
1070         print("autorandr running as user %s (started from batch instance)" % user)
1071
1072     profiles = {}
1073     profile_symlinks = {}
1074     try:
1075         # Load profiles from each XDG config directory
1076         # The XDG spec says that earlier entries should take precedence, so reverse the order
1077         for directory in reversed(os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":")):
1078             system_profile_path = os.path.join(directory, "autorandr")
1079             if os.path.isdir(system_profile_path):
1080                 profiles.update(load_profiles(system_profile_path))
1081                 profile_symlinks.update(get_symlinks(system_profile_path))
1082                 read_config(options, system_profile_path)
1083         # For the user's profiles, prefer the legacy ~/.autorandr if it already exists
1084         # profile_path is also used later on to store configurations
1085         profile_path = os.path.expanduser("~/.autorandr")
1086         if not os.path.isdir(profile_path):
1087             # Elsewise, follow the XDG specification
1088             profile_path = os.path.join(os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), "autorandr")
1089         if os.path.isdir(profile_path):
1090             profiles.update(load_profiles(profile_path))
1091             profile_symlinks.update(get_symlinks(profile_path))
1092             read_config(options, profile_path)
1093         # Sort by descending mtime
1094         profiles = OrderedDict(sorted(profiles.items(), key=lambda x: -x[1]["config-mtime"]))
1095     except Exception as e:
1096         raise AutorandrException("Failed to load profiles", e)
1097
1098     profile_symlinks = {k: v for k, v in profile_symlinks.items() if v in (x[0] for x in virtual_profiles) or v in profiles}
1099
1100     exec_scripts(None, "predetect")
1101     config, modes = parse_xrandr_output()
1102
1103     if "--fingerprint" in options:
1104         output_setup(config, sys.stdout)
1105         sys.exit(0)
1106
1107     if "--config" in options:
1108         output_configuration(config, sys.stdout)
1109         sys.exit(0)
1110
1111     if "--skip-options" in options:
1112         skip_options = [y[2:] if y[:2] == "--" else y for y in (x.strip() for x in options["--skip-options"].split(","))]
1113         for profile in profiles.values():
1114             for output in profile["config"].values():
1115                 output.set_ignored_options(skip_options)
1116         for output in config.values():
1117             output.set_ignored_options(skip_options)
1118
1119     if "-s" in options:
1120         options["--save"] = options["-s"]
1121     if "--save" in options:
1122         if options["--save"] in (x[0] for x in virtual_profiles):
1123             raise AutorandrException("Cannot save current configuration as profile '%s':\n"
1124                                      "This configuration name is a reserved virtual configuration." % options["--save"])
1125         try:
1126             profile_folder = os.path.join(profile_path, options["--save"])
1127             save_configuration(profile_folder, config)
1128             exec_scripts(profile_folder, "postsave", {"CURRENT_PROFILE": options["--save"], "PROFILE_FOLDER": profile_folder})
1129         except Exception as e:
1130             raise AutorandrException("Failed to save current configuration as profile '%s'" % (options["--save"],), e)
1131         print("Saved current configuration as profile '%s'" % options["--save"])
1132         sys.exit(0)
1133
1134     if "-r" in options:
1135         options["--remove"] = options["-r"]
1136     if "--remove" in options:
1137         if options["--remove"] in (x[0] for x in virtual_profiles):
1138             raise AutorandrException("Cannot remove profile '%s':\n"
1139                                      "This configuration name is a reserved virtual configuration." % options["--remove"])
1140         if options["--remove"] not in profiles.keys():
1141             raise AutorandrException("Cannot remove profile '%s':\n"
1142                                      "This profile does not exist." % options["--remove"])
1143         try:
1144             remove = True
1145             profile_folder = os.path.join(profile_path, options["--remove"])
1146             profile_dirlist = os.listdir(profile_folder)
1147             profile_dirlist.remove("config")
1148             profile_dirlist.remove("setup")
1149             if profile_dirlist:
1150                 print("Profile folder '%s' contains the following additional files:\n"
1151                       "---\n%s\n---" % (options["--remove"], "\n".join(profile_dirlist)))
1152                 response = input("Do you really want to remove profile '%s'? If so, type 'yes': " % options["--remove"]).strip()
1153                 if response != "yes":
1154                     remove = False
1155             if remove is True:
1156                 shutil.rmtree(profile_folder)
1157                 print("Removed profile '%s'" % options["--remove"])
1158             else:
1159                 print("Profile '%s' was not removed" % options["--remove"])
1160         except Exception as e:
1161             raise AutorandrException("Failed to remove profile '%s'" % (options["--remove"],), e)
1162         sys.exit(0)
1163
1164     detected_profiles = find_profiles(config, profiles)
1165     load_profile = False
1166
1167     if "-l" in options:
1168         options["--load"] = options["-l"]
1169     if "--load" in options:
1170         load_profile = options["--load"]
1171     elif len(args) == 1:
1172         load_profile = args[0]
1173     else:
1174         # Find the active profile(s) first, for the block script (See #42)
1175         current_profiles = []
1176         for profile_name in profiles.keys():
1177             configs_are_equal = is_equal_configuration(config, profiles[profile_name]["config"])
1178             if configs_are_equal:
1179                 current_profiles.append(profile_name)
1180         block_script_metadata = {
1181             "CURRENT_PROFILE": "".join(current_profiles[:1]),
1182             "CURRENT_PROFILES": ":".join(current_profiles)
1183         }
1184
1185         for profile_name in profiles.keys():
1186             if profile_blocked(os.path.join(profile_path, profile_name), block_script_metadata):
1187                 if "--current" not in options and "--detected" not in options:
1188                     print("%s (blocked)" % profile_name)
1189                 continue
1190             props = []
1191             if profile_name in detected_profiles:
1192                 props.append("(detected)")
1193                 if ("-c" in options or "--change" in options) and not load_profile:
1194                     load_profile = profile_name
1195             elif "--detected" in options:
1196                 continue
1197             if profile_name in current_profiles:
1198                 props.append("(current)")
1199             elif "--current" in options:
1200                 continue
1201             if "--current" in options or "--detected" in options:
1202                 print("%s" % (profile_name, ))
1203             else:
1204                 print("%s%s%s" % (profile_name, " " if props else "", " ".join(props)))
1205             if not configs_are_equal and "--debug" in options and profile_name in detected_profiles:
1206                 print_profile_differences(config, profiles[profile_name]["config"])
1207
1208     if "-d" in options:
1209         options["--default"] = options["-d"]
1210     if not load_profile and "--default" in options:
1211         load_profile = options["--default"]
1212
1213     if load_profile:
1214         if load_profile in profile_symlinks:
1215             if "--debug" in options:
1216                 print("'%s' symlinked to '%s'" % (load_profile, profile_symlinks[load_profile]))
1217             load_profile = profile_symlinks[load_profile]
1218
1219         if load_profile in (x[0] for x in virtual_profiles):
1220             load_config = generate_virtual_profile(config, modes, load_profile)
1221             scripts_path = os.path.join(profile_path, load_profile)
1222         else:
1223             try:
1224                 profile = profiles[load_profile]
1225                 load_config = profile["config"]
1226                 scripts_path = profile["path"]
1227             except KeyError:
1228                 raise AutorandrException("Failed to load profile '%s': Profile not found" % load_profile)
1229             if load_profile in detected_profiles and detected_profiles[0] != load_profile:
1230                 update_mtime(os.path.join(scripts_path, "config"))
1231         add_unused_outputs(config, load_config)
1232         if load_config == dict(config) and "-f" not in options and "--force" not in options:
1233             print("Config already loaded", file=sys.stderr)
1234             sys.exit(0)
1235         if "--debug" in options and load_config != dict(config):
1236             print("Loading profile '%s'" % load_profile)
1237             print_profile_differences(config, load_config)
1238
1239         remove_irrelevant_outputs(config, load_config)
1240
1241         try:
1242             if "--dry-run" in options:
1243                 apply_configuration(load_config, config, True)
1244             else:
1245                 script_metadata = {
1246                     "CURRENT_PROFILE": load_profile,
1247                     "PROFILE_FOLDER": scripts_path,
1248                 }
1249                 exec_scripts(scripts_path, "preswitch", script_metadata)
1250                 if "--debug" in options:
1251                     print("Going to run:")
1252                     apply_configuration(load_config, config, True)
1253                 apply_configuration(load_config, config, False)
1254                 exec_scripts(scripts_path, "postswitch", script_metadata)
1255         except AutorandrException as e:
1256             raise AutorandrException("Failed to apply profile '%s'" % load_profile, e, e.report_bug)
1257         except Exception as e:
1258             raise AutorandrException("Failed to apply profile '%s'" % load_profile, e, True)
1259
1260         if "--dry-run" not in options and "--debug" in options:
1261             new_config, _ = parse_xrandr_output()
1262             if not is_equal_configuration(new_config, load_config):
1263                 print("The configuration change did not go as expected:")
1264                 print_profile_differences(new_config, load_config)
1265
1266     sys.exit(0)
1267
1268
1269 def exception_handled_main(argv=sys.argv):
1270     try:
1271         main(sys.argv)
1272     except AutorandrException as e:
1273         print(e, file=sys.stderr)
1274         sys.exit(1)
1275     except Exception as e:
1276         if not len(str(e)):  # BdbQuit
1277             print("Exception: {0}".format(e.__class__.__name__))
1278             sys.exit(2)
1279
1280         print("Unhandled exception ({0}). Please report this as a bug at "
1281               "https://github.com/phillipberndt/autorandr/issues.".format(e),
1282               file=sys.stderr)
1283         raise
1284
1285
1286 if __name__ == '__main__':
1287     exception_handled_main()