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git/contrib/hooks/pre-auto-gc-battery
Adam Borowski 781262c5e7 hooks/pre-auto-gc-battery: allow gc to run on non-laptops
Desktops and servers tend to have no power sensor, thus on_ac_power returns
255 ("unknown").  Thus, let's take any answer other than 1 ("battery") as
no contraindication to run gc.

If that tool returns "unknown", there's no point in querying other sources
as it already queried them, and is smarter than us (can handle multiple
adapters).

Reported by: Xin Li <delphij@google.com>
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-28 14:24:46 -08:00

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#!/bin/sh
#
# An example hook script to verify if you are on battery, in case you
# are running Linux or OS X. Called by git-gc --auto with no arguments.
# The hook should exit with non-zero status after issuing an appropriate
# message if it wants to stop the auto repacking.
#
# This hook is stored in the contrib/hooks directory. Your distribution
# may have put this somewhere else. If you want to use this hook, you
# should make this script executable then link to it in the repository
# you would like to use it in.
#
# For example, if the hook is stored in
# /usr/share/git-core/contrib/hooks/pre-auto-gc-battery:
#
# cd /path/to/your/repository.git
# ln -sf /usr/share/git-core/contrib/hooks/pre-auto-gc-battery \
# hooks/pre-auto-gc
if test -x /sbin/on_ac_power && (/sbin/on_ac_power;test $? -ne 1)
then
exit 0
elif test "$(cat /sys/class/power_supply/AC/online 2>/dev/null)" = 1
then
exit 0
elif grep -q 'on-line' /proc/acpi/ac_adapter/AC/state 2>/dev/null
then
exit 0
elif grep -q '0x01$' /proc/apm 2>/dev/null
then
exit 0
elif grep -q "AC Power \+: 1" /proc/pmu/info 2>/dev/null
then
exit 0
elif test -x /usr/bin/pmset && /usr/bin/pmset -g batt |
grep -q "drawing from 'AC Power'"
then
exit 0
fi
echo "Auto packing deferred; not on AC"
exit 1