a few scripts

battery.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+legacyinfo=$(ioreg -l -w 2048 | grep 'LegacyBatteryInfo')
+
+get_attribute()
+{
+    echo $legacyinfo | sed "s/.*\"$@\"=\([^,}][^,}]*\)[,}].*/\1/" 
+}
+
+is_negative()
+{
+    [ $(echo "$@ > (2^63-1)" | bc) == "1" ]
+}
+
+two_complement()
+{
+    echo "2^64 - $@" | bc
+}
+
+fix_negative()
+{
+    # is the value negative?
+    if is_negative "$@"; then
+        # compute two's complement
+        echo "-$(two_complement "$@")"
+    else
+        echo "$@"
+    fi
+}
+
+get_integer_attribute()
+{
+    fix_negative "$(get_attribute "$@")"
+}
+
+amperage()
+{
+    get_integer_attribute 'Amperage'
+}
+
+full_capacity()
+{
+    get_integer_attribute 'Capacity'
+}
+
+current_capacity()
+{
+    get_integer_attribute 'Current'
+}
+
+voltage()
+{
+    get_integer_attribute 'Voltage'
+}
+
+cycle_count()
+{
+    get_integer_attribute 'Cycle Count'
+}
+
+discharge_time()
+{
+    hours=$(echo "-$(current_capacity) / $(amperage)" | bc)
+    minutes=$(echo "-( $(current_capacity) % $(amperage) ) * 60 / $(amperage)" | bc)
+    echo "$hours:$minutes"
+}
+
+full_discharge_time()
+{
+    hours=$(echo "-$(full_capacity) / $(amperage)" | bc)
+    minutes=$(echo "-( $(full_capacity) % $(amperage) ) * 60 / $(amperage)" | bc)
+    echo "$hours:$minutes"
+}
+
+charge_time()
+{
+    hours=$(echo "( $(full_capacity) - $(current_capacity) ) / $(amperage)" | bc)
+    minutes=$(echo "( ( $(full_capacity) - $(current_capacity) ) % $(amperage) ) * 60 / $(amperage)" | bc)
+    echo "$hours:$minutes"
+}
+
+full_charge_time()
+{
+    hours=$(echo "$(full_capacity) / $(amperage)" | bc)
+    minutes=$(echo "( $(full_capacity) % $(amperage) ) * 60 / $(amperage)" | bc)
+    echo "$hours:$minutes"
+}
+
+remaining_time()
+{
+    if [ $(echo "$(amperage) < 0" | bc) == "1" ]; then
+        discharge_time
+    elif [ $(echo "$(amperage) > 0" | bc) == "1" ]; then
+        charge_time
+    else
+        echo "0:00"
+    fi
+}
+
+full_time()
+{
+    if [ $(echo "$(amperage) < 0" | bc) == "1" ]; then
+        full_discharge_time
+    elif [ $(echo "$(amperage) > 0" | bc) == "1" ]; then
+        full_charge_time
+    else
+        echo "0:00"
+    fi
+}
+
+charge_ratio()
+{
+    echo "$(echo "(  $(current_capacity) * 100 / $(full_capacity) )" | bc)%"
+}
+
+attributes=('amperage' 'full_capacity' 'current_capacity' 'voltage' 'cycle_count' 'remaining_time' 'charge_ratio' 'full_time')
+
+for ((i=0;i<${#attributes[*]};i++)); do
+    data=$(${attributes[$i]})
+    echo "${attributes[$i]}: $data"
+done
+