Marty Oehme
df45a08c6c
Moved all personal scripts to ~/.local/bin to be systemd file hierarchy compliant, as well as XDG compliant. Since they are not configuration options they don't have anything to do in .config directories. Also, it's just easier to find than the previous .config/scripts/bin.
97 lines
3.3 KiB
Python
Executable file
97 lines
3.3 KiB
Python
Executable file
#!/usr/bin/env python
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"""
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This script emulates "unique application" functionality on Linux. When starting
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playback with this script, it will try to reuse an already running instance of
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mpv (but only if that was started with umpv). Other mpv instances (not started
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by umpv) are ignored, and the script doesn't know about them.
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This only takes filenames as arguments. Custom options can't be used; the script
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interprets them as filenames. If mpv is already running, the files passed to
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umpv are appended to mpv's internal playlist. If a file does not exist or is
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otherwise not playable, mpv will skip the playlist entry when attempting to
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play it (from the GUI perspective, it's silently ignored).
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If mpv isn't running yet, this script will start mpv and let it control the
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current terminal. It will not write output to stdout/stderr, because this
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will typically just fill ~/.xsession-errors with garbage.
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mpv will terminate if there are no more files to play, and running the umpv
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script after that will start a new mpv instance.
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Note that you can control the mpv instance by writing to the command fifo:
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echo "cycle fullscreen" > ~/.umpv_fifo
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Note: you can supply custom mpv path and options with the MPV environment
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variable. The environment variable will be split on whitespace, and the
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first item is used as path to mpv binary and the rest is passed as options
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_if_ the script starts mpv. If mpv is not started by the script (i.e. mpv
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is already running), this will be ignored.
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"""
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import sys
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import os
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import errno
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import subprocess
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import fcntl
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import stat
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import string
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files = sys.argv[1:]
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# this is the same method mpv uses to decide this
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def is_url(filename):
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parts = filename.split("://", 1)
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if len(parts) < 2:
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return False
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# protocol prefix has no special characters => it's an URL
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allowed_symbols = string.ascii_letters + string.digits + '_'
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prefix = parts[0]
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return all(map(lambda c: c in allowed_symbols, prefix))
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# make them absolute; also makes them safe against interpretation as options
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def make_abs(filename):
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if not is_url(filename):
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return os.path.abspath(filename)
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return filename
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files = [make_abs(f) for f in files]
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FIFO = os.path.join(os.getenv("HOME"), ".umpv_fifo")
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fifo_fd = -1
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try:
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fifo_fd = os.open(FIFO, os.O_NONBLOCK | os.O_WRONLY)
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except OSError as e:
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if e.errno == errno.ENXIO:
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pass # pipe has no writer
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elif e.errno == errno.ENOENT:
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pass # doesn't exist
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else:
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raise e
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if fifo_fd >= 0:
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# Unhandled race condition: what if mpv is terminating right now?
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fcntl.fcntl(fifo_fd, fcntl.F_SETFL, 0) # set blocking mode
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fifo = os.fdopen(fifo_fd, "w")
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for f in files:
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# escape: \ \n "
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f = f.replace("\\", "\\\\").replace("\"", "\\\"").replace("\n", "\\n")
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f = "\"" + f + "\""
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fifo.write("raw loadfile " + f + " append\n")
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else:
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# Recreate pipe if it doesn't already exist.
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# Also makes sure it's safe, and no other user can create a bogus pipe
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# that breaks security.
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try:
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os.unlink(FIFO)
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except OSError as e:
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pass
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os.mkfifo(FIFO, 0o600)
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opts = (os.getenv("MPV") or "mpv").split()
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opts.extend(["--no-terminal", "--force-window", "--input-file=" + FIFO,
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"--"])
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opts.extend(files)
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subprocess.check_call(opts)
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