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# Functions used for interactive installation of new changes to running system
# vim: ft=sh
# Ask if given section should be installed
# First argument is name (take care not to use special characters for regulard
# expression) and second argument is a question
ask() {
local ignore_file=".ignore-$(hostname)"
[ -f "$ignore_file" ] && grep -q "^$1$" "$ignore_file" && return 1
if $FORCE; then
echo "\e[1;34m$2\e[0m"
# Fall trough with 0 exit (always yes)
else
echo -e -n "\e[1;34m$2? (Y/n) \e[0m"
local reply
read -r reply
echo "$reply" | grep -qE '^[Yy]?$'
fi
}
dodiff() {
if [ -d "$2" ]; then
# If we just copying some file to directory
OUT=$2/$(basename "$1")
else
OUT=$2
fi
if ! [ -f "$OUT" ]; then
echo -e "\e[1;33mNot installed:\e[0m $1 => $OUT"
if ask "Install?"; then
doinst "$1" "$OUT"
fi
return
fi
if cmp "$1" "$OUT" >/dev/null 2>&1; then
echo -e "\e[1;32mNo difference detected:\e[0m $OUT"
return
fi
if $FORCE; then
doinst "$1" "$OUT"
else
vimdiff "$1" "$OUT"
fi
}
# Managing two git trees with master has small inconvenience that git allows only
# single branch checkout in all work trees, so as it sets now git will execute all
# commands not on deployed tree but on tree in this repository, so we need specify
# work tree on command line every time we want target deployed work tree.
gitrepo_relink() {
local GITD="gitdir: $PWD/.git$(sed "s/^gitdir: [./]*git//" "$1")"
# We check that we are pointing to correct path just because of making message correct
if ! grep -q "$GITD" "$2"; then
echo -e "\e[1;34mPointing git repository $2 to this repository\e[0m"
echo "$GITD" > "$2"
fi
# else probably not a git repository or who knows.
}
checkdiff() {
# Iterate trough source directory but ignore any git repositories
# Note that it's design decision to not iterate trough target directory.
if [ -d "$1" ]; then
# This is check if we have correct inst command basically. If it is
# directory than it have to have trailing slash to ensure that no
# additional directory is created.
if ! echo "$1" | grep -qE '/$'; then
echo -e "\e[1;31mERROR: Directory without trailing slash detected:\e[0m $1"
exit 1
fi
# Got trough all files ignoring git repositories
for f in `find "$1" \( -type d -exec test -e '{}'/.git \; \) -prune -o -type f -print`; do
F="${f#$1}"
dodiff "$1/$F" "$2/$F"
done
# Check if we have all directories ignoring those in git repositories
for d in `find "$1" -type d -print -exec test -e '{}'/.git \; -prune`; do
D="${d#$1}"
if [ ! -d "$2/$D" ]; then
echo -e "\e[1;33mDirectory not installed:\e[0m $1/$D => $2/$D"
if ask "Install?"; then
doinst "$1/$D/" "$2/$D"
fi
fi
done
# Now checkout git repositories
for g in `find "$1" -type d -exec test -e '{}'/.git \; -print -prune`; do
G="$2/${g#$1}"
gitrepo_relink "$g/.git" "$G/.git" # Always reling .git just to be sure
PREV="$(pwd)"
cd "$G"
# Check if we have any change at all
if git --work-tree=. diff --exit-code -s; then
echo -e "\e[1;32mNo difference detected in git:\e[0m $G"
else
echo -e "\e[0;32mCheckout of git repository:\e[0m $G"
# Checkout all files to HEAD
git --work-tree=. checkout -f HEAD
# Update all submodules
git --work-tree=. submodule update --recursive
fi
cd "$PREV"
done
else
dodiff "$1" "$2"
fi
}
doinst() {
echo -e "\e[1;34mrsync -rlpt $1 $2\e[0m"
mkdir -p "$(dirname "$2")"
rsync -rlpt $1 $2
# Now edit all .git files in target directory
for g in `find "$1" -name '.git' -type f`; do
gitrepo_relink "$g" "$2/${g#$1}"
done
}
inst() {
if [ ! -e "$1" ]; then
echo "Missing file to be installed: $1" >&2
fi
if [ -e "$2" ]; then
# If output exists, execute diff instead
checkdiff $1 $2
return
fi
doinst $1 $2
}
# gpg encrypted install
ginst() {
if [ -z "$PASS" ]; then
PASS="$(gpg --batch --decrypt pass.gpg)"
fi
# TODO probably we should be sure that file will be always removed
local TMP="$(mktemp myconfigs.XXXXXXXXXX)"
gpg --batch --passphase "$PASS" --output "$TMP" --decrypt "$1"
inst "$TMP" "$2"
gpg --batch --passphase "$PASS" --output "$1" --encrypt "$TMP"
}
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