tmux-resurrect/scripts/process_restore_helpers.sh
2017-05-30 02:05:23 +02:00

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restore_pane_processes_enabled() {
local restore_processes="$(get_tmux_option "$restore_processes_option" "$restore_processes")"
if [ "$restore_processes" == "false" ]; then
return 1
else
return 0
fi
}
restore_pane_process() {
local pane_full_command="$1"
local session_name="$2"
local window_number="$3"
local pane_index="$4"
local dir="$5"
local command
if _process_should_be_restored "$pane_full_command" "$session_name" "$window_number" "$pane_index"; then
tmux switch-client -t "${session_name}:${window_number}"
tmux select-pane -t "$pane_index"
local inline_strategy="$(_get_inline_strategy "$pane_full_command")" # might not be defined
if [ -n "$inline_strategy" ]; then
# inline strategy exists
# check for additional "expansion" of inline strategy, e.g. `vim` to `vim -S`
if _strategy_exists "$inline_strategy"; then
local strategy_file="$(_get_strategy_file "$inline_strategy")"
local inline_strategy="$($strategy_file "$pane_full_command" "$dir")"
fi
command="$inline_strategy"
elif _strategy_exists "$pane_full_command"; then
local strategy_file="$(_get_strategy_file "$pane_full_command")"
local strategy_command="$($strategy_file "$pane_full_command" "$dir")"
command="$strategy_command"
else
# just invoke the raw command
command="$pane_full_command"
fi
tmux send-keys -t "${session_name}:${window_number}" "$command" "C-m"
fi
}
# private functions below
_process_should_be_restored() {
local pane_full_command="$1"
local session_name="$2"
local window_number="$3"
local pane_index="$4"
if is_pane_registered_as_existing "$session_name" "$window_number" "$pane_index"; then
# Scenario where pane existed before restoration, so we're not
# restoring the proces either.
return 1
elif ! pane_exists "$session_name" "$window_number" "$pane_index"; then
# pane number limit exceeded, pane does not exist
return 1
elif _restore_all_processes; then
return 0
elif _process_on_the_restore_list "$pane_full_command"; then
return 0
else
return 1
fi
}
_restore_all_processes() {
local restore_processes="$(get_tmux_option "$restore_processes_option" "$restore_processes")"
if [ "$restore_processes" == ":all:" ]; then
return 0
else
return 1
fi
}
_process_on_the_restore_list() {
local pane_full_command="$1"
# TODO: make this work without eval
eval set $(_restore_list)
local proc
local match
for proc in "$@"; do
match="$(_get_proc_match_element "$proc")"
if _proc_matches_full_command "$pane_full_command" "$match"; then
return 0
fi
done
return 1
}
_proc_matches_full_command() {
local pane_full_command="$1"
local match="$2"
if _proc_starts_with_tildae "$match"; then
match="$(remove_first_char "$match")"
# regex matching the command makes sure `$match` string is somewhere in the command string
if [[ "$pane_full_command" =~ ($match) ]]; then
return 0
fi
else
# regex matching the command makes sure process is a "word"
if [[ "$pane_full_command" =~ (^${match} ) ]] || [[ "$pane_full_command" =~ (^${match}$) ]]; then
return 0
fi
fi
return 1
}
_get_proc_match_element() {
echo "$1" | sed "s/${inline_strategy_token}.*//"
}
_get_proc_restore_element() {
echo "$1" | sed "s/.*${inline_strategy_token}//"
}
_restore_list() {
local user_processes="$(get_tmux_option "$restore_processes_option" "$restore_processes")"
local default_processes="$(get_tmux_option "$default_proc_list_option" "$default_proc_list")"
if [ -z "$user_processes" ]; then
# user didn't define any processes
echo "$default_processes"
else
echo "$default_processes $user_processes"
fi
}
_proc_starts_with_tildae() {
[[ "$1" =~ (^~) ]]
}
_get_inline_strategy() {
local pane_full_command="$1"
# TODO: make this work without eval
eval set $(_restore_list)
local proc
local match
for proc in "$@"; do
if [[ "$proc" =~ "$inline_strategy_token" ]]; then
match="$(_get_proc_match_element "$proc")"
if _proc_matches_full_command "$pane_full_command" "$match"; then
echo "$(_get_proc_restore_element "$proc")"
fi
fi
done
}
_strategy_exists() {
local pane_full_command="$1"
local strategy="$(_get_command_strategy "$pane_full_command")"
if [ -n "$strategy" ]; then # strategy set?
local strategy_file="$(_get_strategy_file "$pane_full_command")"
[ -e "$strategy_file" ] # strategy file exists?
else
return 1
fi
}
_get_command_strategy() {
local pane_full_command="$1"
local command="$(_just_command "$pane_full_command")"
get_tmux_option "${restore_process_strategy_option}${command}" ""
}
_just_command() {
echo "$1" | cut -d' ' -f1
}
_get_strategy_file() {
local pane_full_command="$1"
local strategy="$(_get_command_strategy "$pane_full_command")"
local command="$(_just_command "$pane_full_command")"
echo "$CURRENT_DIR/../strategies/${command}_${strategy}.sh"
}