Add the ability to exclude specific cases from NVM_AUTO_USE

zsh-nvm.plugin.zsh

@@ -163,22 +163,57 @@ _zsh_nvm_revert() {
   fi
 }
 
+_current_node_version() {
+  if _node_is_nvm; then
+    node --version 2>/dev/null
+  else
+    printf 'system'
+  fi
+}
+
+_node_is_nvm() {
+  local node_path="$(command which node 2>/dev/null)"
+  if [[ -n "$node_path" && -z "${node_path##$NVM_DIR*}" ]]; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+_nvm_default_version() {
+  local alias="$(nvm_resolve_alias default)"
+  if [[ "$alias" = 'node' ]]; then
+    nvm_ls node | nvm_grep -e '^v' | nvm_grep -v -e "^v0" | tail -n 1
+  else
+    nvm version default
+  fi
+}
+
 autoload -U add-zsh-hook
 _zsh_nvm_auto_use() {
   _zsh_nvm_has nvm_find_nvmrc || return
+  if [[ $NVM_AUTO_USE != 'true' ]]; then
+    return
+  fi
 
-  local node_version="$(nvm version)"
+  local node_version="$(_current_node_version)"
   local nvmrc_path="$(nvm_find_nvmrc)"
 
   if [[ -n "$nvmrc_path" ]]; then
+    local nvmrc_dir="$(dirname "$nvmrc_path")"
+    local nvmrc_version="$(cat "$nvmrc_path")"
     local nvmrc_node_version="$(nvm version $(cat "$nvmrc_path"))"
 
-    if [[ "$nvmrc_node_version" = "N/A" ]]; then
+    if [[ -v NVM_AUTO_USE_IGNORE_VERSION ]] && [[ ${NVM_AUTO_USE_IGNORE_VERSION[(Ie)$nvmrc_version]} -gt 0 ]]; then
+      echo "Detected nvm version <$nvmrc_version>, but this version is set to be ignored"
+    elif [[ -v NVM_AUTO_USE_IGNORE_PATH ]] && [[ ${NVM_AUTO_USE_IGNORE_PATH[(Ie)$nvmrc_dir]} -gt 0 ]]; then
+      echo "Detected nvm version <$nvmrc_version>, but this path is set to be ignored"
+    elif [[ "$nvmrc_node_version" = "N/A" ]]; then
       nvm install && export NVM_AUTO_USE_ACTIVE=true
     elif [[ "$nvmrc_node_version" != "$node_version" ]]; then
       nvm use && export NVM_AUTO_USE_ACTIVE=true
     fi
-  elif [[ "$node_version" != "$(nvm version default)" ]] && [[ "$NVM_AUTO_USE_ACTIVE" = true ]]; then
+  elif [[ "$NVM_AUTO_USE_ACTIVE" = true ]] && [[ "$node_version" != "$(_nvm_default_version)" ]]; then
     echo "Reverting to nvm default version"
     nvm use default
   fi