Set default value of $XDG_CONFIG_DIRS to be standard compliant

[deb_pkgs/autorandr.git] / autorandr.py

diff --git a/autorandr.py b/autorandr.py
index a65322d90c4ea4168a4748ba47befb5423e1de85..41e27b6962ae7dc2a86bf9cd6869e822923aa5dd 100755 (executable)
--- a/autorandr.py
+++ b/autorandr.py
@@ -34,6 +34,7 @@ import re
 import subprocess
 import sys
 import shutil
+import time
 
 from collections import OrderedDict
 from distutils.version import LooseVersion as Version
@@ -112,7 +113,8 @@ class AutorandrException(Exception):
             retval.append(":\n  ")
             retval.append(str(self.original_exception).replace("\n", "\n  "))
         if self.report_bug:
-            retval.append("\nThis appears to be a bug. Please help improving autorandr by reporting it upstream."
+            retval.append("\nThis appears to be a bug. Please help improving autorandr by reporting it upstream:"
+                          "\nhttps://github.com/phillipberndt/autorandr/issues"
                          "\nPlease attach the output of `xrandr --verbose` to your bug report if appropriate.")
         return "".join(retval)
 
@@ -528,6 +530,25 @@ def update_mtime(filename):
     except:
         return False
 
+def call_and_retry(*args, **kwargs):
+    """Wrapper around subprocess.call that retries failed calls.
+
+    This function calls subprocess.call and on non-zero exit states,
+    waits a second and then retries once. This mitigates #47,
+    a timing issue with some drivers.
+    """
+    kwargs_redirected = dict(kwargs)
+    if hasattr(subprocess, "DEVNULL"):
+        kwargs_redirected["stdout"] = getattr(subprocess, "DEVNULL")
+    else:
+        kwargs_redirected["stdout"] = open(os.devnull, "w")
+    kwargs_redirected["stderr"] = kwargs_redirected["stdout"]
+    retval = subprocess.call(*args, **kwargs_redirected)
+    if retval != 0:
+        time.sleep(1)
+        retval = subprocess.call(*args, **kwargs)
+    return retval
+
 def apply_configuration(new_configuration, current_configuration, dry_run=False):
     "Apply a configuration"
     outputs = sorted(new_configuration.keys(), key=lambda x: new_configuration[x].sort_key)
@@ -581,13 +602,13 @@ def apply_configuration(new_configuration, current_configuration, dry_run=False)
     # Perform pe-change auxiliary changes
     if auxiliary_changes_pre:
         argv = base_argv + list(chain.from_iterable(auxiliary_changes_pre))
-        if subprocess.call(argv) != 0:
+        if call_and_retry(argv) != 0:
             raise AutorandrException("Command failed: %s" % " ".join(argv))
 
     # Disable unused outputs, but make sure that there always is at least one active screen
     disable_keep = 0 if remain_active_count else 1
     if len(disable_outputs) > disable_keep:
-        if subprocess.call(base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))) != 0:
+        if call_and_retry(base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))) != 0:
             # Disabling the outputs failed. Retry with the next command:
             # Sometimes disabling of outputs fails due to an invalid RRSetScreenSize.
             # This does not occur if simultaneously the primary screen is reset.
@@ -606,7 +627,7 @@ def apply_configuration(new_configuration, current_configuration, dry_run=False)
     operations = disable_outputs + enable_outputs
     for index in range(0, len(operations), 2):
         argv = base_argv + list(chain.from_iterable(operations[index:index+2]))
-        if subprocess.call(argv) != 0:
+        if call_and_retry(argv) != 0:
             raise AutorandrException("Command failed: %s" % " ".join(argv))
 
 def is_equal_configuration(source_configuration, target_configuration):
@@ -715,7 +736,7 @@ def exec_scripts(profile_path, script_name, meta_information=None):
         user_profile_path = os.path.join(os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), "autorandr")
 
     for folder in chain((profile_path, os.path.dirname(profile_path), user_profile_path),
-                        (os.path.join(x, "autorandr") for x in os.environ.get("XDG_CONFIG_DIRS", "").split(":"))):
+                        (os.path.join(x, "autorandr") for x in os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":"))):
 
         if script_name not in ran_scripts:
             script = os.path.join(folder, script_name)
@@ -748,7 +769,7 @@ def main(argv):
     try:
         # Load profiles from each XDG config directory
         # The XDG spec says that earlier entries should take precedence, so reverse the order
-        for directory in reversed(os.environ.get("XDG_CONFIG_DIRS", "").split(":")):
+        for directory in reversed(os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":")):
             system_profile_path = os.path.join(directory, "autorandr")
             if os.path.isdir(system_profile_path):
                 profiles.update(load_profiles(system_profile_path))
@@ -898,6 +919,9 @@ def main(argv):
                     "PROFILE_FOLDER": scripts_path,
                 }
                 exec_scripts(scripts_path, "preswitch", script_metadata)
+                if "--debug" in options:
+                    print("Going to run:")
+                    apply_configuration(load_config, config, True)
                 apply_configuration(load_config, config, False)
                 exec_scripts(scripts_path, "postswitch", script_metadata)
         except Exception as e:
@@ -922,5 +946,5 @@ if __name__ == '__main__':
             print("Exception: {0}".format(e.__class__.__name__))
             sys.exit(2)
 
-        print("Unhandled exception ({0}). Please report this as a bug.".format(e), file=sys.stderr)
+        print("Unhandled exception ({0}). Please report this as a bug at https://github.com/phillipberndt/autorandr/issues.".format(e), file=sys.stderr)
         raise