lemonbar: Some progress with screen

.i3/lemonbar/i3_lemonbar_common.py

@@ -3,7 +3,6 @@ from enum import Enum
 
 import i3_lemonbar_config as config
 
-p_screen = None
 kill_on_unfocus = []
 
 # Loggers, initialized in main function
@@ -21,7 +20,8 @@ class bar_mode(Enum):
 
 mode = bar_mode.normal
 
-screen_args = ['screen', '-D', '-R', '-U' '-S' 'lemonbar']
+screen_args = ['screen', '-d', '-m', '-U', '-S', 'lemonbar'
+                , '-L', '-Logfile', config.fifo_screen_log]
 
 floatterm_args = lambda prog : ['terminator', '-r', 'FLOAT_TERM', '-p'
         , 'dark', '-e', 'echo kill_unfocus $$ > {}; exec {}'.format(
@@ -65,16 +65,17 @@ def set_mode(args):
 def bluetooth(args):
     btcargs = args.split()[1:]
     btcargs = [a.replace('pxc550', '00:16:94:22:29:0E') for a in btcargs]
-    btcargs.append('\n')
     inp = ' '.join(btcargs)
-    p_screen.stdin.write(inp)
-    p_screen.stdin.flush()
+    stuff_screen(inp)
 
 show_secs = False
 def toggle_secs(args):
     global show_secs
     show_secs = not show_secs
 
+def stuff_screen(cmd):
+    subprocess.run(['screen', '-S', 'lemonbar', '-X', 'stuff', "echo " + cmd + "\\n"])
+
 # Keymaps
 def_keymap = 'pl'
 keymaps = {'Firefox': 'se'}

.i3/lemonbar/i3_lemonbar_launcher.py

@@ -110,7 +110,7 @@ def clean_up():
     nice_delete(config.fifo_file_executor)
     nice_term(p_conky_slow)
     nice_term(p_conky_fast)
-    nice_term(common.p_screen)
+    common.stuff_screen('kill')
     if i3_ws_obj is not None:
         i3_ws_obj.quit()
     sys.exit(0)
@@ -192,11 +192,15 @@ def strip_ansi_unicode(s):
     return strip_unicode
 
 def user_screen():
-    # Attach to screen session, creating if needed, in UTF-8 mode
-    common.p_screen = subprocess.Popen(common.screen_args # TODO lemonbar_user
-                ,stdin=subprocess.PIPE, stdout=subprocess.PIPE, text=True)
-    for line in common.p_screen.stdout:
-    #try:
+    # Create screen session, in UTF-8 mode, logging to fifo
+    create_new_fifo(config.fifo_screen_log)
+    subprocess.Popen(common.screen_args) # TODO lemonbar_user
+    with open(config.fifo_screen_log, 'r', buffering=1) as screen_read:
+        while True:
+            try:
+                line = screen_read.readline()
+                if not line:
+                    break
                 common.logger.debug('Screen read line {}'.format(line.strip('\n')))
     #    with open(config.fifo_file_status, 'w') as fifo:
     #        clean_line = strip_ansi_unicode(line)
@@ -204,8 +208,10 @@ def user_screen():
     #                and not clean_line.startswith('[CHG]')
     #                and not clean_line.isspace()):
     #            fifo.write('RESP [bluetoothctl] ' + clean_line)
-    #except:
-    #    raise
+            except:
+                raise
+
+    nice_delete(config.fifo_screen_log)
 
 class i3_thread:
     """ Helper class to start and stop threads"""