Add new dotfiles command to bin

bin/dotfiles

@@ -0,0 +1,174 @@
+#!/bin/bash -e
+# Installation:
+# curl https://raw.github.com/Klowner/dotfiles/main/bin/dotfiles | bash
+basedir="${DOTFILES_ROOT:-$HOME/.dotfiles}"
+bindir="${DOTFILES_BIN:-$HOME/bin}"
+repo="Klowner/dotfiles"
+gitbase="git://github.com/${repo}.git"
+gitremote="git@github.com:${repo}"
+tarball="http://github.com/${repo}/tarball/master"
+
+function has() {
+  return $(which $1 &> /dev/null)
+}
+
+function missing() {
+  ! has $1
+}
+
+function stat() {
+  GIT_DIR=${basedir}/.git git diff --stat
+}
+
+function note() {
+  echo " * $*"
+}
+
+function warn() {
+  echo " * $*"
+}
+
+function die() {
+  warn $*
+  exit 1
+}
+
+function destination() {
+  path=$1
+  path=${path/\_/.}
+  path=${path//\_//}
+  echo $path
+}
+
+function dirname() {
+  path=$1
+  path=${path%"${path##*[!/]}"}
+  path=${path%/*}
+  echo $path
+}
+
+function reverse_destination() {
+  path=$1
+  path=${path/\./_/}
+  echo $path
+  echo path $path
+}
+
+function link() {
+  src=$1
+  dst=$2
+  if [ -e $dst ]; then
+    if [ -L $dst ]; then
+      # Symlink already exists
+      return
+    else
+      # Rename existing files with ".old" extension
+      warn "$dst already exists, renaming to $dst.old"
+      backup=$dst.old
+      if [ -e $backup ]; then
+        die "$backup already exists. Aborting."
+      fi
+      mv -v $dst $backup
+    fi
+  fi
+  # Update existing or create new symlink
+  ln -vsf $src $dst
+}
+
+function bootstrap() {
+  note "Bootstrapping..."
+  if missing curl && missing wget; then
+    die "missing: curl or wget"
+  fi
+  if missing git; then
+    die "missing: git"
+  fi
+
+  if [ -e $basedir ]; then
+    # Try to determine if these dotfiles already installed
+    if [ -e "${basedir}/.git" ]; then
+      local current_remote=$(GIT_DIR=${basedir}/.git git remote -v | grep origin\.\*\(fetch\) | awk '{print $2}')
+      if [ $current_remote = $gitremote ]; then
+        die "Dotfiles already installed!"
+      fi
+    fi
+    exit
+    warn "$basedir exists, moving to ${basedir}.bak"
+    mv "${basedir}" "${basedir}.bak"
+  fi
+}
+
+function install() {
+  note "Symlinking configuration files..."
+  for path in _*; do
+    dst=$(destination $path)
+    dstdir=$(dirname $dst)
+    case $path in
+      .|..|.git)
+        continue
+        ;;
+      *)
+        echo $basedir/$path $HOME/$dst "$dst $dstdir"
+        ;;
+    esac
+  done
+
+  note "Installing ~/bin script links... ${bindir}"
+  mkdir -v -p ${bindir}
+  if [ -d ${bindir} ]; then
+    for path in ${basedir}/bin/*; do
+      echo "link" $path ${bindir}/${path##*/}
+    done
+  fi
+  note "Done"
+}
+
+function git_migrate() {
+  if missing git; then
+    return
+  fi
+}
+
+function add() {
+  path=$1
+  dst="${path/"$HOME"/}" # remove leading $HOME from path
+  dst="${dst/\//}" # remove leading slash
+  dst="${dst//[.|\/]/_}" # replace slashes with underscores
+
+  note "Adding $path..."
+  cp -avr $path $basedir/$dst
+  mv $path $path.old
+  link $basedir/$dst $path
+}
+
+function info() {
+  echo "location:   ${basedir}"
+  echo "commands:   ${bindir}"
+  echo "git:        ${gitremote}"
+}
+
+# Hopefully detect if this script is being piped to bash
+if [ "${0/*\//}" != "dotfiles" ]; then
+  bootstrap && \
+  install && \
+  exit
+fi
+
+git_migrate
+
+cmd=${1:-help}
+case $cmd in
+  install) install;;
+  add)     add ${@:2};;
+  info)    info;;
+  status)  stat;;
+  help)
+    echo "Commands:"
+    echo " - install      Install to $basedir"
+    echo " - add <path>"
+    echo " - info         Print script variables"
+    echo " - status       Show changed items in .dotfiles"
+    ;;
+esac
+
+# vim:ts=2:sw=2:et: