diff options
Diffstat (limited to 'stowsh')
| -rwxr-xr-x | stowsh | 182 |
1 files changed, 182 insertions, 0 deletions
@@ -0,0 +1,182 @@ +#!/usr/bin/env bash + +_runcommands() { + local prefix='' + if [[ $DRYRUN == 1 ]] || [[ $VERBOSE -gt 1 ]]; then + echo "$@" + fi + if [[ $DRYRUN != 1 ]]; then + eval "$@" + fi +} + +echoerr() { + printf "%s\n" "$*" >&2; +} + +deperr() { + echoerr "stowsh requires $1" +} + +stowsh_setpaths() { + if command -v grealpath >/dev/null 2>&1; then + rpcmd="grealpath" + elif command -v realpath >/dev/null 2>&1; then + rpcmd="realpath" + else + deperr "GNU coreutils" + return 1 + fi + if ! strings "$(which "$rpcmd")" | grep -q "GNU coreutils" ; then + deperr "GNU coreutils" + return 1 + fi + if command -v gfind >/dev/null 2>&1; then + findcmd="gfind" + elif command -v find >/dev/null 2>&1; then + findcmd="find" + else + deperr "GNU findutils" + return 1 + fi + if ! strings "$(which "$findcmd")" | grep -q "GNU findutils" ; then + deperr "GNU findutils" + return 1 + fi +} + +stowsh_install() { + stowsh_setpaths || return 1 + local pkg=$1 + local target + target=$( "$rpcmd" "${2-$PWD}" ) + local commands=() + + ( + cd "$pkg" || return 1 + dirs="$($findcmd . -mindepth 1 -type d | sed "s|./||")" + for d in $dirs ; do + commands+=("mkdir -p '$target/$d'") + done + + local files + files="$($findcmd . -type f -or -type l | sed "s|./||")" + for f in $files ; do + local targetf="$target/$f" + local thisdir + thisdir=$(dirname "$targetf") + local relative + relative=$($rpcmd "$f" --relative-to="$thisdir" --canonicalize-missing) + if [[ ! -f "$targetf" ]] ; then + commands+=("ln -s '$relative' '$targetf'") + else + echoerr "$targetf already exists." + if [[ ! $SKIP -eq 1 ]]; then + echoerr "Aborting. Rerun with the -s flag to skip errors."; + return + fi + fi + done + for cmd in "${commands[@]}"; do + _runcommands "$cmd" + done; + ) +} + +stowsh_uninstall() { + stowsh_setpaths || return 1 + local pkg=$1 + local target + target=$( "$rpcmd" "${2-$PWD}" ) + local commands=() + + ( + cd "$pkg" || return 1 + local files + files="$($findcmd . -type f -or -type l | sed "s|./||")" + for f in $files ; do + local targetf="$target/$f" + if [[ $($rpcmd "$targetf") == $(realpath "$f") ]] ; then + commands+=("rm '$targetf'") + elif [[ -f "$targetf" ]] ; then + echoerr "$targetf does not point to to $(realpath "$f")." + if [[ ! $SKIP -eq 1 ]]; then + echoerr "Aborting. Rerun with the -s flag to skip errors."; + return + fi + elif [[ ! -f "$targetf" ]] ; then + echoerr "$targetf does not exist. Nothing to do." + if [[ ! $SKIP -eq 1 ]]; then + echoerr "Aborting. Rerun with the -s flag to skip errors."; + return + fi + fi + done + + dirs="$($findcmd . -mindepth 1 -type d | sed "s|./||")" + for d in $dirs ; do + commands+=("[[ -d '$target/$d' ]] && $findcmd '$target/$d' -type d -empty -delete") + done + for cmd in "${commands[@]}"; do + _runcommands "$cmd" + done; + ) +} + +stowsh_help() { + echo "Usage: $0 [-D] [-n] [-s] [-v[v]] [-t TARGET] PACKAGES..." +} + +if [ "$0" = "$BASH_SOURCE" ]; then + UNINSTALL=0 + DRYRUN=0 + SKIP=0 + TARGET="$PWD" + PACKAGES=() + while [[ "$@" ]]; do + if [[ $1 =~ ^- ]]; then + OPTIND=1 + while getopts ":vhDsnt:" opt; do + case $opt in + h) + stowsh_help + exit 0 + ;; + D) UNINSTALL=1 + ;; + n) DRYRUN=1 + ;; + s) SKIP=1 + ;; + v) VERBOSE=$((VERBOSE + 1)) + ;; + t) TARGET="$OPTARG" + ;; + *) echo "'$OPTARG' is an invalid option/flag" + exit 1 + ;; + esac + done + shift $((OPTIND-1)) + else + PACKAGES+=("$1") + shift + fi + done + + if [[ ${#PACKAGES[@]} -eq 0 ]] ; then + stowsh_help + exit 1 + fi + + for i in ${!PACKAGES[*]}; do + pkg=${PACKAGES[$i]} + if [[ $UNINSTALL -eq 1 ]]; then + if [[ $VERBOSE -gt 0 ]] ; then echoerr "uninstalling $pkg from $TARGET" ; fi + stowsh_uninstall "$pkg" "$TARGET" + else + if [[ $VERBOSE -gt 0 ]] ; then echoerr "installing $pkg to $TARGET" ; fi + stowsh_install "$pkg" "$TARGET" + fi + done +fi |