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Diffstat (limited to 'lib/powerline.sh')
| -rw-r--r-- | lib/powerline.sh | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/lib/powerline.sh b/lib/powerline.sh new file mode 100644 index 0000000..3a3fb68 --- /dev/null +++ b/lib/powerline.sh @@ -0,0 +1,142 @@ +# Library functions + +print_powerline() { + local side="$1" + local upper_side=$(echo "$1" | tr '[:lower:]' '[:upper:]') + eval "local input_segments=(\"\${TMUX_POWERLINE_${upper_side}_STATUS_SEGMENTS[@]}\")" + local powerline_segments=() + local powerline_segment_contents=() + + __check_platform + + __process_segment_defaults + __process_scripts + __process_colors + + __process_powerline +} + +__process_segment_defaults() { + for segment_index in "${!input_segments[@]}"; do + local input_segment=(${input_segments[$segment_index]}) + eval "local default_separator=\$TMUX_POWERLINE_DEFAULT_${upper_side}SIDE_SEPARATOR" + + powerline_segment_with_defaults=( + ${input_segment[0]:-"no_script"} \ + ${input_segment[1]:-$TMUX_POWERLINE_DEFAULT_BACKGROUND_COLOR} \ + ${input_segment[2]:-$TMUX_POWERLINE_DEFAULT_FOREGROUND_COLOR} \ + ${input_segment[3]:-$default_separator} \ + ) + + powerline_segments[$segment_index]="${powerline_segment_with_defaults[@]}" + done +} + +__process_scripts() { + for segment_index in "${!powerline_segments[@]}"; do + local powerline_segment=(${powerline_segments[$segment_index]}) + + if [ -n "$TMUX_POWERLINE_DIR_USER_SEGMENTS" ] && [ -f "$TMUX_POWERLINE_DIR_USER_SEGMENTS/${powerline_segment[0]}.sh" ] ; then + local script="$TMUX_POWERLINE_DIR_USER_SEGMENTS/${powerline_segment[0]}.sh" + else + local script="$TMUX_POWERLINE_DIR_SEGMENTS/${powerline_segment[0]}.sh" + fi + + export TMUX_POWERLINE_CUR_SEGMENT_BG="${powerline_segment[1]}" + export TMUX_POWERLINE_CUR_SEGMENT_FG="${powerline_segment[2]}" + source "$script" + local output + output=$(run_segment) + local exit_code="$?" + unset -f run_segment + + if [ "$exit_code" -ne 0 ] && debug_mode_enabled ; then + local seg_name="${script##*/}" + echo "Segment '${seg_name}' exited with code ${exit_code}. Aborting." + exit 1 + fi + + if [ -n "$output" ]; then + powerline_segment_contents[$segment_index]=" $output " + else + unset -v powerline_segments[$segment_index] + fi + done +} + +__process_colors() { + for segment_index in "${!powerline_segments[@]}"; do + local powerline_segment=(${powerline_segments[$segment_index]}) + # Find the next segment that produces content (i.e. skip empty segments). + for next_segment_index in $(eval echo {$(($segment_index + 1))..${#powerline_segments}}) ; do + [[ -n ${powerline_segments[next_segment_index]} ]] && break + done + local next_segment=(${powerline_segments[$next_segment_index]}) + + if [ $side == 'left' ]; then + powerline_segment[4]=${next_segment[1]:-$TMUX_POWERLINE_DEFAULT_BACKGROUND_COLOR} + elif [ $side == 'right' ]; then + powerline_segment[4]=${previous_background_color:-$TMUX_POWERLINE_DEFAULT_BACKGROUND_COLOR} + fi + + if __segment_separator_is_thin; then + powerline_segment[5]=${powerline_segment[2]} + else + powerline_segment[5]=${powerline_segment[1]} + fi + + local previous_background_color=${powerline_segment[1]} + + powerline_segments[$segment_index]="${powerline_segment[@]}" + done +} + +__process_powerline() { + for segment_index in "${!powerline_segments[@]}"; do + local powerline_segment=(${powerline_segments[$segment_index]}) + + local background_color=${powerline_segment[1]} + local foreground_color=${powerline_segment[2]} + local separator=${powerline_segment[3]} + local separator_background_color=${powerline_segment[4]} + local separator_foreground_color=${powerline_segment[5]} + + eval "__print_${side}_segment ${segment_index} ${background_color} ${foreground_color} ${separator} ${separator_background_color} ${separator_foreground_color}" + done +} + +__print_left_segment() { + local content=${powerline_segment_contents[$1]} + local content_background_color=$2 + local content_foreground_color=$3 + local separator=$4 + local separator_background_color=$5 + local separator_foreground_color=$6 + + __print_colored_content "$content" $content_background_color $content_foreground_color + __print_colored_content $separator $separator_background_color $separator_foreground_color +} + +__print_right_segment() { + local content=${powerline_segment_contents[$1]} + local content_background_color=$2 + local content_foreground_color=$3 + local separator=$4 + local separator_background_color=$5 + local separator_foreground_color=$6 + + __print_colored_content $separator $separator_background_color $separator_foreground_color + __print_colored_content "$content" $content_background_color $content_foreground_color +} + +__segment_separator_is_thin() { + [[ ${powerline_segment[3]} == $TMUX_POWERLINE_SEPARATOR_LEFT_THIN || \ + ${powerline_segment[3]} == $TMUX_POWERLINE_SEPARATOR_RIGHT_THIN ]]; +} + +__check_platform() { + if [ "$SHELL_PLATFORM" == "unknown" ] && debug_mode_enabled; then + echo "Unknown platform; modify config/shell.sh" &1>&2 + fi +} + |