192 lines
4.1 KiB
Bash
192 lines
4.1 KiB
Bash
# config options
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default_next_key="n"
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tmux_option_next="@copycat_next"
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default_prev_key="N"
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tmux_option_prev="@copycat_prev"
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# keeps track of number of panes in copycat mode
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tmux_option_counter="@copycat_counter"
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# === awk vs gawk ===
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command_exists() {
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command -v "$@" > /dev/null 2>&1
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}
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AWK_CMD='awk'
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if command_exists gawk; then
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AWK_CMD='gawk'
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fi
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# === general helpers ===
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get_tmux_option() {
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local option=$1
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local default_value=$2
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local option_value=$(tmux show-option -gqv "$option")
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if [ -z "$option_value" ]; then
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echo "$default_value"
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else
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echo "$option_value"
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fi
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}
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set_tmux_option() {
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local option=$1
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local value=$2
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tmux set-option -gq "$option" "$value"
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}
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tmux_copy_mode() {
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tmux show-option -gwv mode-keys
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}
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tmux_copy_mode_string() {
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if [ $(tmux_copy_mode) == 'vi' ]; then
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echo copy-mode-vi
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else
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echo copy-mode
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fi
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}
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# === copycat mode specific helpers ===
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set_copycat_mode() {
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set_tmux_option "$(_copycat_mode_var)" "true"
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}
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unset_copycat_mode() {
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set_tmux_option "$(_copycat_mode_var)" "false"
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}
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in_copycat_mode() {
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local copycat_mode=$(get_tmux_option "$(_copycat_mode_var)" "false")
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[ "$copycat_mode" == "true" ]
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}
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not_in_copycat_mode() {
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if in_copycat_mode; then
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return 1
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else
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return 0
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fi
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}
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# === copycat mode position ===
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get_copycat_position() {
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local copycat_position_variable=$(_copycat_position_var)
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echo $(get_tmux_option "$copycat_position_variable" "0")
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}
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set_copycat_position() {
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local position="$1"
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local copycat_position_variable=$(_copycat_position_var)
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set_tmux_option "$copycat_position_variable" "$position"
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}
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reset_copycat_position() {
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set_copycat_position "0"
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}
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# === scrollback and results position ===
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get_scrollback_filename() {
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echo "$(_get_tmp_dir)/scrollback-$(_pane_unique_id)"
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}
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get_copycat_filename() {
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echo "$(_get_tmp_dir)/results-$(_pane_unique_id)"
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}
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# Ensures a message is displayed for 5 seconds in tmux prompt.
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# Does not override the 'display-time' tmux option.
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display_message() {
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local message="$1"
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# display_duration defaults to 5 seconds, if not passed as an argument
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if [ "$#" -eq 2 ]; then
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local display_duration="$2"
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else
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local display_duration="5000"
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fi
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# saves user-set 'display-time' option
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local saved_display_time=$(get_tmux_option "display-time" "750")
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# sets message display time to 5 seconds
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tmux set-option -gq display-time "$display_duration"
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# displays message
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tmux display-message "$message"
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# restores original 'display-time' value
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tmux set-option -gq display-time "$saved_display_time"
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}
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# === counter functions ===
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copycat_increase_counter() {
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local count=$(get_tmux_option "$tmux_option_counter" "0")
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local new_count="$((count + 1))"
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set_tmux_option "$tmux_option_counter" "$new_count"
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}
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copycat_decrease_counter() {
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local count="$(get_tmux_option "$tmux_option_counter" "0")"
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if [ "$count" -gt "0" ]; then
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# decreasing the counter only if it won't go below 0
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local new_count="$((count - 1))"
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set_tmux_option "$tmux_option_counter" "$new_count"
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fi
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}
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copycat_counter_zero() {
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local count="$(get_tmux_option "$tmux_option_counter" "0")"
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[ "$count" -eq "0" ]
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}
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# === key binding functions ===
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copycat_next_key() {
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echo "$(get_tmux_option "$tmux_option_next" "$default_next_key")"
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}
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copycat_prev_key() {
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echo "$(get_tmux_option "$tmux_option_prev" "$default_prev_key")"
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}
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# function expected output: 'C-c Enter q'
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copycat_quit_copy_mode_keys() {
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local commands_that_quit_copy_mode="cancel"
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local copy_mode="$(tmux_copy_mode_string)"
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tmux list-keys -T "$copy_mode" |
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\grep "$commands_that_quit_copy_mode" |
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$AWK_CMD '{ print $4 }' |
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sort -u |
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sed 's/C-j//g' |
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xargs echo
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}
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# === 'private' functions ===
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_copycat_mode_var() {
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local pane_id="$(_pane_unique_id)"
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echo "@copycat_mode_$pane_id"
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}
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_copycat_position_var() {
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local pane_id="$(_pane_unique_id)"
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echo "@copycat_position_$pane_id"
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}
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_get_tmp_dir() {
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echo "${TMPDIR:-/tmp}/tmux-$EUID-copycat"
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}
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# returns a string unique to current pane
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# sed removes `$` sign because `session_id` contains is
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_pane_unique_id() {
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tmux display-message -p "#{session_id}-#{window_index}-#{pane_index}" |
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sed 's/\$//'
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}
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