Automatic updates

By default, this should prompt to update once every 14 days.
If user answers anything other than y/Y, wait until next cycle
If user answers y/Y, pull down the current branch's dotfiles
(ensure that your machine is on the correct branch if you have multiple)

check_for_upgrade.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env zsh
+
+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() {
+  env DOTFILES=$DOTFILES sh $DOTFILES/upgrade.sh
+  # update the zsh file
+  _update_zsh_update
+}
+
+epoch_target=$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
+
+if mkdir "$DOTFILES/log/update.lock" 2>/dev/null; then
+  if [ -f ~/.dotfiles-update ]; then
+    . ~/.dotfiles-update
+
+    if [[ -z "$LAST_EPOCH" ]]; then
+      _update_zsh_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 "[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 zsh file
+    _update_dotfiles_update
+  fi
+
+  rmdir $DOTFILES/log/update.lock
+fi

shell/env

@@ -6,9 +6,14 @@ export LC_ALL=en_US.UTF-8
 export LANG=en_US.UTF-8  
 export LANGUAGE=en_US.UTF-8
 
+export DOTFILES = "${HOME}/dotfiles"
+
 # Paths
 export PATH=$PATH:${HOME}/bin:/usr/lib/wine/bin:/sbin:/usr/sbin:/usr/local/bin
 
+# Allow automatic updates
+DISABLE_DOTFILES_AUTO_UPDATE = "FALSE"
+
 # Automatically attach tmux session "C0DE" upon entering a shell
 if [[ -z "$TMUX" ]]; then
     tmux attach -t C0DE || tmux new -s C0DE

shell/functions

@@ -20,7 +20,7 @@ extract () { # Extracts most common compressed files
         fi
 }
 # Takes 1st argument and makes a .tar.gz archive
-maketar() { tar cvzf "${1%%/}.tar.gz"  "${1%%/}/"; }
+maketgz() { tar cvzf "${1%%/}.tar.gz"  "${1%%/}/"; }
 # Takes 1st argument and makes a .zip archive
 makezip() { zip -r "${1%%/}.zip" "$1" ; }
 # Generate password - 1st argument is the number of characters, defaults to 20

shell/zshrc

@@ -39,6 +39,12 @@ function insert_sudo {
 zle -N insert-sudo insert_sudo
 bindkey "^[s" insert-sudo
 
+# Check for updates...
+# Stolen and modified Oh-My-ZSH's update system
+if [ "$DISABLE_DOTFILES_AUTO_UPDATE" != "true" ]; then
+  env ZSH=$ZSH DOTFILES=$DOTFILES DISABLE_UPDATE_PROMPT=$DISABLE_UPDATE_PROMPT zsh -f $DOTFILES/check_for_upgrade.sh
+fi
+
 # Oh-My-ZSH Options below this line
 
 # Define Oh-My-ZSH root
@@ -64,6 +70,7 @@ COMPLETION_WAITING_DOTS="true"
 # Example format: plugins=(rails git textmate ruby lighthouse)
 # Add wisely, as too many plugins slow down shell startup.
 plugins=(git \
+    per-directory-history \
     virtualenvwrapper \
     wp-cli \
     nyan)

upgrade.sh

@@ -0,0 +1,37 @@
+
+# Use colors, but only if connected to a terminal, and that terminal
+# supports them.
+if which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+fi
+if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
+  RED="$(tput setaf 1)"
+  GREEN="$(tput setaf 2)"
+  YELLOW="$(tput setaf 3)"
+  BLUE="$(tput setaf 4)"
+  BOLD="$(tput bold)"
+  NORMAL="$(tput sgr0)"
+else
+  RED=""
+  GREEN=""
+  YELLOW=""
+  BLUE=""
+  BOLD=""
+  NORMAL=""
+fi
+
+printf "${BLUE}%s${NORMAL}\n" "Updating your dotfiles"
+cd "$DOTFILES"
+branch=$(git name-rev --name-only HEAD)
+if git pull --rebase --stat origin $branch
+then
+  printf '%s' "$GREEN"
+  printf '%s\n' ' _____     ______     ______   ______   __     __         ______     ______    '
+  printf '%s\n' '/\  __-.  /\  __ \   /\__  _\ /\  ___\ /\ \   /\ \       /\  ___\   /\  ___\   '
+  printf '%s\n' '\ \ \/\ \ \ \ \/\ \  \/_/\ \/ \ \  __\ \ \ \  \ \ \____  \ \  __\   \ \___  \  '
+  printf '%s\n' ' \ \____-  \ \_____\    \ \_\  \ \_\    \ \_\  \ \_____\  \ \_____\  \/\_____\ '
+  printf '%s\n' '  \/____/   \/_____/     \/_/   \/_/     \/_/   \/_____/   \/_____/   \/_____/ '
+  printf "${BLUE}%s\n" "Hooray! Your dotfiles have been updated and/or is at the current version."
+else
+  printf "${RED}%s${NORMAL}\n" 'There was an error updating. Try again later?'
+fi