tmux-resurrect/scripts/save.sh
2015-07-10 18:01:20 +02:00

289 lines
8.3 KiB
Bash
Executable File

#!/usr/bin/env bash
CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source "$CURRENT_DIR/variables.sh"
source "$CURRENT_DIR/helpers.sh"
source "$CURRENT_DIR/spinner_helpers.sh"
# delimiters
d=$'\t'
delimiter=$'\t'
# if "quiet" script produces no output
SCRIPT_OUTPUT="$1"
grouped_sessions_format() {
local format
format+="#{session_grouped}"
format+="${delimiter}"
format+="#{session_group}"
format+="${delimiter}"
format+="#{session_id}"
format+="${delimiter}"
format+="#{session_name}"
echo "$format"
}
pane_format() {
local format
format+="pane"
format+="${delimiter}"
format+="#{session_name}"
format+="${delimiter}"
format+="#{window_index}"
format+="${delimiter}"
format+=":#{window_name}"
format+="${delimiter}"
format+="#{window_active}"
format+="${delimiter}"
format+=":#{window_flags}"
format+="${delimiter}"
format+="#{pane_index}"
format+="${delimiter}"
format+=":#{pane_current_path}"
format+="${delimiter}"
format+="#{pane_active}"
format+="${delimiter}"
format+="#{pane_current_command}"
format+="${delimiter}"
format+="#{pane_pid}"
format+="${delimiter}"
format+="#{history_size}"
echo "$format"
}
window_format() {
local format
format+="window"
format+="${delimiter}"
format+="#{session_name}"
format+="${delimiter}"
format+="#{window_index}"
format+="${delimiter}"
format+="#{window_active}"
format+="${delimiter}"
format+=":#{window_flags}"
format+="${delimiter}"
format+="#{window_layout}"
echo "$format"
}
state_format() {
local format
format+="state"
format+="${delimiter}"
format+="#{client_session}"
format+="${delimiter}"
format+="#{client_last_session}"
echo "$format"
}
dump_panes_raw() {
tmux list-panes -a -F "$(pane_format)"
}
dump_windows_raw(){
tmux list-windows -a -F "$(window_format)"
}
toggle_window_zoom() {
local target="$1"
tmux resize-pane -Z -t "$target"
}
_save_command_strategy_file() {
local save_command_strategy="$(get_tmux_option "$save_command_strategy_option" "$default_save_command_strategy")"
local strategy_file="$CURRENT_DIR/../save_command_strategies/${save_command_strategy}.sh"
local default_strategy_file="$CURRENT_DIR/../save_command_strategies/${default_save_command_strategy}.sh"
if [ -e "$strategy_file" ]; then # strategy file exists?
echo "$strategy_file"
else
echo "$default_strategy_file"
fi
}
pane_full_command() {
local pane_pid="$1"
local strategy_file="$(_save_command_strategy_file)"
# execute strategy script to get pane full command
$strategy_file "$pane_pid"
}
number_nonempty_lines_on_screen() {
local pane_id="$1"
tmux capture-pane -pJ -t "$pane_id" |
sed '/^$/d' |
wc -l |
sed 's/ //g'
}
# tests if there was any command output in the current pane
pane_has_any_content() {
local pane_id="$1"
local history_size="$(tmux display -p -t "$pane_id" -F "#{history_size}")"
local cursor_y="$(tmux display -p -t "$pane_id" -F "#{cursor_y}")"
# doing "cheap" tests first
[ "$history_size" -gt 0 ] || # history has any content?
[ "$cursor_y" -gt 0 ] || # cursor not in first line?
[ "$(number_nonempty_lines_on_screen "$pane_id")" -gt 1 ]
}
capture_pane_contents() {
local pane_id="$1"
local start_line="-$2"
local pane_contents_area="$3"
if pane_has_any_content "$pane_id"; then
if [ "$pane_contents_area" = "visible" ]; then
start_line="0"
fi
# the printf hack below removes *trailing* empty lines
printf '%s\n' "$(tmux capture-pane -epJ -S "$start_line" -t "$pane_id")" > "$(pane_contents_file "$pane_id")"
fi
}
save_shell_history() {
local pane_id="$1"
local pane_command="$2"
local full_command="$3"
if [ "$pane_command" = "bash" ] && [ "$full_command" = ":" ]; then
# leading space prevents the command from being saved to history
# (assuming default HISTCONTROL settings)
local write_command=" history -w '$(resurrect_history_file "$pane_id")'"
# C-e C-u is a Bash shortcut sequence to clear whole line. It is necessary to
# delete any pending input so it does not interfere with our history command.
tmux send-keys -t "$pane_id" C-e C-u "$write_command" C-m
fi
}
get_active_window_index() {
local session_name="$1"
tmux list-windows -t "$session_name" -F "#{window_flags} #{window_index}" |
awk '$1 ~ /\*/ { print $2; }'
}
get_alternate_window_index() {
local session_name="$1"
tmux list-windows -t "$session_name" -F "#{window_flags} #{window_index}" |
awk '$1 ~ /-/ { print $2; }'
}
dump_grouped_sessions() {
local current_session_group=""
local original_session
tmux list-sessions -F "$(grouped_sessions_format)" |
grep "^1" |
cut -c 3- |
sort |
while IFS=$d read session_group session_id session_name; do
if [ "$session_group" != "$current_session_group" ]; then
# this session is the original/first session in the group
original_session="$session_name"
current_session_group="$session_group"
else
# this session "points" to the original session
active_window_index="$(get_active_window_index "$session_name")"
alternate_window_index="$(get_alternate_window_index "$session_name")"
echo "grouped_session${d}${session_name}${d}${original_session}${d}:${alternate_window_index}${d}:${active_window_index}"
fi
done
}
fetch_and_dump_grouped_sessions(){
local grouped_sessions_dump="$(dump_grouped_sessions)"
get_grouped_sessions "$grouped_sessions_dump"
if [ -n "$grouped_sessions_dump" ]; then
echo "$grouped_sessions_dump"
fi
}
# translates pane pid to process command running inside a pane
dump_panes() {
local full_command
dump_panes_raw |
while IFS=$d read line_type session_name window_number window_name window_active window_flags pane_index dir pane_active pane_command pane_pid history_size; do
# not saving panes from grouped sessions
if is_session_grouped "$session_name"; then
continue
fi
full_command="$(pane_full_command $pane_pid)"
echo "${line_type}${d}${session_name}${d}${window_number}${d}${window_name}${d}${window_active}${d}${window_flags}${d}${pane_index}${d}${dir}${d}${pane_active}${d}${pane_command}${d}:${full_command}"
done
}
dump_windows() {
dump_windows_raw |
while IFS=$d read line_type session_name window_index window_active window_flags window_layout; do
# not saving windows from grouped sessions
if is_session_grouped "$session_name"; then
continue
fi
# window_layout is not correct for zoomed windows
if [[ "$window_flags" == *Z* ]]; then
# unmaximize the window
toggle_window_zoom "${session_name}:${window_index}"
# get correct window layout
window_layout="$(tmux display-message -p -t "${session_name}:${window_index}" -F "#{window_layout}")"
# maximize window again
toggle_window_zoom "${session_name}:${window_index}"
fi
echo "${line_type}${d}${session_name}${d}${window_index}${d}${window_active}${d}${window_flags}${d}${window_layout}"
done
}
dump_state() {
tmux display-message -p "$(state_format)"
}
dump_pane_contents() {
local pane_contents_area="$(get_tmux_option "$pane_contents_area_option" "$default_pane_contents_area")"
dump_panes_raw |
while IFS=$d read line_type session_name window_number window_name window_active window_flags pane_index dir pane_active pane_command pane_pid history_size; do
capture_pane_contents "${session_name}:${window_number}.${pane_index}" "$history_size" "$pane_contents_area"
done
}
dump_bash_history() {
dump_panes |
while IFS=$d read line_type session_name window_number window_name window_active window_flags pane_index dir pane_active pane_command full_command; do
save_shell_history "$session_name:$window_number.$pane_index" "$pane_command" "$full_command"
done
}
save_all() {
local resurrect_file_path="$(resurrect_file_path)"
mkdir -p "$(resurrect_dir)"
fetch_and_dump_grouped_sessions > "$resurrect_file_path"
dump_panes >> "$resurrect_file_path"
dump_windows >> "$resurrect_file_path"
dump_state >> "$resurrect_file_path"
ln -fs "$(basename "$resurrect_file_path")" "$(last_resurrect_file)"
if capture_pane_contents_option_on; then
mkdir -p "$(pane_contents_dir)"
dump_pane_contents
pane_contents_create_archive
pane_content_files_cleanup
fi
if save_bash_history_option_on; then
dump_bash_history
fi
}
show_output() {
[ "$SCRIPT_OUTPUT" != "quiet" ]
}
main() {
if supported_tmux_version_ok; then
if show_output; then
start_spinner "Saving..." "Tmux environment saved!"
fi
save_all
if show_output; then
stop_spinner
display_message "Tmux environment saved!"
fi
fi
}
main