mirror of
https://github.com/prdlk/television.git
synced 2026-11-02 13:12:51 +00:00
57 lines
2.1 KiB
TOML
57 lines
2.1 KiB
TOML
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[metadata]
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name = "jobs"
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description = """
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The current fish shell's background jobs (stopped or running). tv runs in a
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child process and cannot see the shell's job table, so the ctrl-z binding
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(_jobs_bind) writes it to the file named by $TV_JOBS; enter prints the job id
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and the binding runs `fg %<id>`; ctrl-d kills the job. Opened any other way,
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the list is empty.
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"""
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requirements = ["ps"]
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# Record: "%<id> <state> <command>", job id, process group (tab separated).
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# Newest job first, the order fish's `jobs` prints.
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[source]
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command = '[ -n "$TV_JOBS" ] && [ -r "$TV_JOBS" ] && cat "$TV_JOBS"'
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shell = "bash"
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display = "{split:\\t:0}"
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output = "{split:\\t:1}"
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[preview]
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command = '''
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pg='{split:\t:2}'
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# No other braces in this script: tv would read them as templates. procps
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# `ps -g` matches sessions, not process groups, so filter on pgid by hand.
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pids=$(ps -e -o pgid=,pid= --sort=start_time | while read -r g p; do [ "$g" = "$pg" ] && echo "$p"; done)
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if [ -z "$pids" ]; then
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echo "process group $pg is gone"
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exit 0
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fi
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first=$(echo "$pids" | head -n1)
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printf '\033[1mcwd\033[0m %s\n' "$(readlink "/proc/$first/cwd" 2>/dev/null || echo '?')"
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printf '\033[1mstarted\033[0m %s\n\n' "$(ps -o lstart= -p "$first" | sed 's/^ *//')"
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# STAT T = stopped (ctrl-z), S/R = running in the background.
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ps -o pid,stat,etime,pcpu,rss,args --forest -p "$(echo $pids | tr ' ' ,)"
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'''
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shell = "bash"
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[keybindings]
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ctrl-d = ["actions:kill", "reload_source"]
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# SIGTERM to the whole process group, then SIGCONT: a stopped job holds TERM
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# until it runs again. The row leaves $TV_JOBS only once the group is gone
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# (up to 1 s), so reload_source keeps a job that ignored TERM. No braces: tv
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# would read them as templates.
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[actions.kill]
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description = "Kill the job (SIGTERM to its process group)"
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command = '''
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pg='{split:\t:2}'
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kill -TERM -- "-$pg" 2>/dev/null
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kill -CONT -- "-$pg" 2>/dev/null
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for i in 1 2 3 4 5 6 7 8 9 10; do kill -0 -- "-$pg" 2>/dev/null || break; sleep 0.1; done
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if ! kill -0 -- "-$pg" 2>/dev/null && [ -w "$TV_JOBS" ]; then
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awk -F '\t' -v g="$pg" '$3 != g' "$TV_JOBS" >"$TV_JOBS.new" && mv "$TV_JOBS.new" "$TV_JOBS"
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fi
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'''
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shell = "bash"
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mode = "fork"
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