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dotfiles/check_for_update.sh
2020-03-11 19:02:13 +01:00

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#!/usr/bin/env zsh
#
# brethil, brutally copied from https://github.com/robbyrussell/oh-my-zsh/blob/master/tools/check_for_upgrade.sh
# This also tries to update amix's vimrc and runs "antigen update"
# 14 July 2017
zmodload zsh/datetime
function _current_epoch() {
echo $(( $EPOCHSECONDS / 60 / 60 / 24 ))
}
function _update_dotfiles_update() {
echo "LAST_EPOCH=$(_current_epoch)" >! ~/.dotfiles-update
}
function _upgrade_dotfiles() {
(cd $DOTFILES; git pull -q --rebase && echo "Succesfully upgraded dotfiles" || echo "Could not upgrade dotfiles.")
# amix's vimrc update
amix_vimrc=$HOME/.vim_runtime
if [[ -d $amix_vimrc ]]; then
# the update_plugins.py script makes the vim_runtime dir dirty, so we have to reset --hard
(cd $amix_vimrc && git reset --hard HEAD >/dev/null && git pull -q --rebase && echo "Upgraded amix's vimrc" || echo "Could not upgrade amix's vimrc" >&2)
(python $amix_vimrc/update_plugins.py >/dev/null || echo "upgraded amix's vimrc's plugins || "echo "Could not upgrade amix's vimrc's plugins" >&2)
else
echo "Could not upgrade amix's vimrc and plugins (missing .vim_runtime folder)" >&2
fi
antibody update
# update the zsh file
_update_dotfiles_update
}
epoch_target=$UPDATE_ZSH_DAYS
if [[ -z "$epoch_target" ]]; then
# Default to old behavior
epoch_target=13
fi
# Cancel upgrade if the current user doesn't have write permissions for the
# dotfiles directory.
[[ -w "$DOTFILES" ]] || return 0
# Cancel upgrade if git is unavailable on the system
whence git >/dev/null || return 0
# Clean up old lock files
find $DOTFILES/update.lock -mmin 60 -exec rm {} \; &>/dev/null
if mkdir "$DOTFILES/update.lock" 2>/dev/null; then
if [ -f ~/.dotfiles-update ]; then
. ~/.dotfiles-update
if [[ -z "$LAST_EPOCH" ]]; then
_update_dotfiles_update && return 0;
fi
epoch_diff=$(($(_current_epoch) - $LAST_EPOCH))
if [ $epoch_diff -gt $epoch_target ]; then
if [ "$DISABLE_UPDATE_PROMPT" = "true" ]; then
_upgrade_dotfiles
else
echo "[brethil dotfiles] Would you like to check for updates? [Y/n]: \c"
read line
if [[ "$line" == Y* ]] || [[ "$line" == y* ]] || [ -z "$line" ]; then
_upgrade_dotfiles
else
_update_dotfiles_update
fi
fi
fi
else
# create the dotfiles file
_update_dotfiles_update
fi
rmdir $DOTFILES/update.lock
fi