restructuring

internal_bin/check_for_upgrade.sh

@@ -0,0 +1,76 @@
+#!/usr/bin/env zsh
+# Modified from https://github.com/robbyrussell/oh-my-zsh/blob/master/tools/check_for_upgrade.sh
+# Original Copyright: (c) 2009-2018 Robby Russell and contributors
+# Modified Copyright: (c) 2018 David Todd (c0de)
+# License: MIT
+
+zmodload zsh/datetime
+
+function _current_epoch() {
+  echo $(( $EPOCHSECONDS / 60 / 60 / 24 ))
+}
+
+function _update_dotfiles_update() {
+  echo "export LAST_EPOCH=$(_current_epoch)" > ${HOME}/.dotfiles-update
+  echo "touched ~/.dotfiles-update"
+}
+
+function _upgrade_dotfiles() {
+  env _DOTFILES=$_DOTFILES sh $_DOTFILES/internal_bin/upgrade.sh
+  # update the zsh file
+  _update_dotfiles_update
+}
+
+# Configure this in shell/env
+epoch_target=$UPDATE_DOTFILES_DAYS
+if [[ -z "$epoch_target" ]]; then
+  # Default to every 2 weeks
+  epoch_target=13
+fi
+
+# Cancel upgrade if the current user doesn't have
+# write permissions for the dotfiles directory.
+if [[ -w "$_DOTFILES" ]]; then
+else
+  echo "You can't write to $(_dotfiles)!"
+  return 1
+fi
+
+# Cancel upgrade if git is unavailable on the system
+if [[ $(whence git >/dev/null) || false ]]; then
+else
+  echo "git is not available"
+  return 2
+fi
+
+if mkdir -p "$_DOTFILES/update.lock" 2>/dev/null; then
+  if [ -f ${HOME}/.dotfiles-update ]; then
+    . ${HOME}/.dotfiles-update
+
+    if [[ -z "$LAST_EPOCH" ]]; then
+      echo "Missing \$LAST_EPOCH"
+      _update_dotfiles_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
+    echo "Missing ~/.dotfiles-update"
+    # create the zsh file
+    _update_dotfiles_update
+  fi
+
+  rmdir $_DOTFILES/update.lock
+fi