First commit

battery_osx.tmux

@@ -0,0 +1,51 @@
+# /usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+battery_percentage="#($CURRENT_DIR/scripts/battery_percentage_osx.sh)"
+battery_icon="#($CURRENT_DIR/scripts/battery_icon_osx.sh)"
+battery_percentage_interpolation="&bp"
+battery_icon_interpolation="&bi"
+
+get_status_right() {
+    local status_right=$(tmux show-option -gv status-right)
+    echo $status_right
+}
+
+# checks if any interpolation string exists.
+needs_batt_interpolation() {
+    local string=$1
+    [[ "$string" =~ ($battery_percentage_interpolation|$battery_icon_interpolation) ]]
+}
+
+do_interpolation() {
+    local string=$1
+    local percentage_interpolated=${string/$battery_percentage_interpolation/$battery_percentage}
+    local all_interpolated=${percentage_interpolated/$battery_icon_interpolation/$battery_icon}
+    echo $all_interpolated
+}
+# If the `status-right` tmux option contains battery percentage or icon
+# interpolation string, it is substituted with a battery command.
+# If there's no interpolation string at all, battery command is prepended to
+# the `status-right` option.
+insert_battery_commands() {
+    local string=$1
+    if needs_batt_interpolation "$string"; then
+        do_interpolation "$string"
+    else
+        # prepend battery_command to the 'status-right'
+        echo "$battery_icon$battery_percentage $string"
+    fi
+}
+
+update_tmux_status_right() {
+    local new_status=$1
+    tmux set -gq status-right "$new_status"
+}
+
+main() {
+    local status_right=$(get_status_right)
+    local new_status_right=$(insert_battery_commands "$status_right")
+    update_tmux_status_right "$new_status_right"
+}
+main

scripts/battery_icon_osx.sh

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+# /usr/bin/env bash
+
+# script global variables
+charged_icon=""
+charging_icon=""
+discharging_icon=""
+
+charged_default="🔋 "
+charging_default="⚡️ "
+discharging_default=""
+
+# tmux show-option "q" (quiet) flag does not set return value to 1, even though
+# the option does not exist. This function patches that.
+get_tmux_option() {
+    option=$1
+    option_value=$(tmux show-option -gqv "$option")
+    if [ -z $option_value ]; then
+        return 1
+    else
+        echo $option_value
+    fi
+}
+
+# icons are set as script global variables
+get_icon_settings() {
+    charged_icon=$(get_tmux_option "@batt_charged_icon" || echo "$charged_default")
+    charging_icon=$(get_tmux_option "@batt_charging_icon" || echo "$charging_default")
+    discharging_icon=$(get_tmux_option "@batt_discharging_icon" || echo "$discharging_default")
+}
+
+battery_status() {
+    # "charged", "charging" or "discharging" is the 3rd field on the second line
+    pmset -g batt | awk 'NR==2 { print $3 }'
+}
+
+print_icon() {
+    local status=$1
+    if [[ $status =~ (^charged) ]]; then
+        printf "$charged_icon"
+    elif [[ $status =~ (^charging) ]]; then
+        printf "$charging_icon"
+    elif [[ $status =~ (^discharging) ]]; then
+        printf "$discharging_icon"
+    fi
+}
+
+main() {
+    get_icon_settings
+    local status=$(battery_status)
+    print_icon "$status"
+}
+main

scripts/battery_percentage_osx.sh

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+# /usr/bin/env bash
+
+print_battery_percentage() {
+    # percentage displayed in the 2nd field of the 2nd row
+    pmset -g batt | awk 'NR==2 { gsub(/;/,""); print $2 }'
+}
+
+main() {
+    print_battery_percentage
+}
+main