builddots

#!/bin/bash

root_dir=/home/tony/git/dotfiles
cache_file="$root_dir/.dotbuild_cache"
refresh_cache=false
is_default_verbosity=true
default_verbosity=1
verbosity=0
rebuild_gtk=false
restow=false
now=$(date +%s)
shvar=$(mktemp /tmp/builddotsXXX.tmp)

export cache_file
export verbosity
export now
export shvar
export root_dir

. /home/tony/.scripts/lib/logv

progname=${0##*/}

help_text() {
    while IFS= read -r line; do
        printf "%s\n" "$line"
    done <<-EOF
Usage:
    ${progname} [OPTIONS...]

Options:
    -r, --refresh         Force refresh cache
    -c, --cache=CACHE     Custom cache path
    -v, --verbosity=N     Verbosity level. Defaults to 1. 0 is silent.
    --gtk                 Also rebuild gtk theme
    -s, --restow          Restow after build
    -h, --help            Prints this help message
EOF
}

init_shvar() {
    printf "%s\n%s\n%s" 0 0 0 > "${shvar}"
}

get_shvar_line() {
    case "$1" in
        num_built) line=1 ;;
        num_skipped) line=2 ;;
        num_new) line=3 ;;
        *) exit 1 ;;
    esac
    echo "$line"
}
export -f get_shvar_line

get_shvar_val() {
    line=$(get_shvar_line "$1")
    curr=$(sed -n "${line}p" "${shvar}")
    echo "$curr"
}
export -f get_shvar_val

increment_shvar() {
    line=$(get_shvar_line "$1")
    curr=$(get_shvar_val "$1")
    ((curr++))
    sed -i "${line}s/.*/${curr}/" "${shvar}"
}
export -f increment_shvar

close_shvar() {
    logv debug "Removing $shvar"
    rm "$shvar"
}

build() {
    directory=$(dirname "$1")
    filename=$(basename "$1")
    file_ext=${filename##*.}

    [ "$file_ext" != 'dot' ] && exit # ignore non .dot files

    search=$(grep "$1" $cache_file)
    if [ "$?" -eq 1 ]; then
        echo "$1 $now" >> $cache_file
        logv debug "$1 added to cache"
        increment_shvar num_new
    else
        last_built=$(echo "$search" | awk '{print $2}')
        last_modified=$(stat -c "%Y" "$1")
        if [ $((last_modified-last_built)) -lt 0 ]; then
            logv debug "Skipping $1"
            increment_shvar num_skipped
            exit
        else
            logv debug "Updating $1"
            sed -i "s@$search@$1 $now@" $cache_file
        fi
    fi

    built="$directory/${filename::-4}"
    dotpp -s "${root_dir}/lookup.json" -t "$1" -o "$built"
    logv info "built $1 -> $built"
    increment_shvar num_built

    # Warn if there's still something unmatched
    if grep '$$.*$$' "$built"; then
        logv warn "$built has unmatched expressions."
    fi
}
export -f build

[ ! -f $cache_file ] && touch $cache_file

eval set -- $(
    getopt \
    -an "$progname" \
    -o 'hrc:vs' \
    --long 'help,refresh,cache:,verbosity:,gtk,restow' \
    -- "$@"
)

while :;do
    case $1 in
        -r | --refresh)
            refresh_cache=true
            shift
            ;;
        -c | --cache)
            cache_file=$2
            shift 2
            ;;
        --verbosity)
            verbosity=$2
            is_default_verbosity=false
            shift 2
            ;;
        -v)
            verbosity=$((verbosity+1))
            is_default_verbosity=false
            shift
            ;;
        --gtk)
            rebuild_gtk=true
            shift
            ;;
        -s | --restow)
            restow=true
            shift
            ;;
        --)
            shift
            break
            ;;
        *)
            help_text
            exit 1
            ;;
    esac
done

init_shvar

[ "$refresh_cache" = true ] &&\
    echo "" > "$cache_file"

[ "$is_default_verbosity" = true ] && verbosity="$default_verbosity"

cd $root_dir || exit 1

find . -type f -iname '*.dot' -exec bash -c 'build "{}"' \;

if [ "$rebuild_gtk" = true ]; then
    cd "$root_dir/glass-theme" || exit 1
    meson install -C build
fi

logv info "built: $(get_shvar_val num_built), skipped: $(get_shvar_val num_skipped), new: $(get_shvar_val num_new)"

close_shvar

if [ "$restow" = true ]; then
    ship sail >/dev/null 2>&1
    success=$?
    [ "$success" -eq 0 ] && logv info "Restowed successfully"
fi