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# 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
}
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