Show NodeJS version in Powerline themes (#1438)

Currently, only nvm is supported.

themes/base.theme.bash

@@ -62,6 +62,9 @@ SCM_SVN_CHAR='⑆'
 SCM_NONE='NONE'
 SCM_NONE_CHAR='○'
 
+NVM_THEME_PROMPT_PREFIX=' |'
+NVM_THEME_PROMPT_SUFFIX='|'
+
 RVM_THEME_PROMPT_PREFIX=' |'
 RVM_THEME_PROMPT_SUFFIX='|'
 
@@ -306,6 +309,19 @@ function hg_prompt_vars {
     fi
 }
 
+function nvm_version_prompt {
+  local node
+  if declare -f -F nvm &> /dev/null; then
+    node=$(nvm current 2> /dev/null)
+    [[ "${node}" == "system" ]] && return
+    echo -e "${NVM_THEME_PROMPT_PREFIX}${node}${NVM_THEME_PROMPT_SUFFIX}"
+  fi
+}
+
+function node_version_prompt {
+  echo -e "$(nvm_version_prompt)"
+}
+
 function rvm_version_prompt {
   if which rvm &> /dev/null; then
     rvm=$(rvm-prompt) || return

themes/powerline-multiline/README.md

@@ -56,6 +56,7 @@ The contents of both prompt sides can be "reordered", all the "segments" (every
 * `python_venv` - Python virtual environment information (`virtualenv`, `venv`
   and `conda` supported)
 * `ruby` - Current ruby version if using `rvm`
+* `node` - Current node version (only `nvm` is supported)
 * `scm` - Version control information, `git` 
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder

themes/powerline-multiline/powerline-multiline.theme.bash

@@ -29,6 +29,11 @@ SCM_THEME_PROMPT_STAGED_COLOR=30
 SCM_THEME_PROMPT_UNSTAGED_COLOR=92
 SCM_THEME_PROMPT_COLOR=${SCM_THEME_PROMPT_CLEAN_COLOR}
 
+NVM_THEME_PROMPT_PREFIX=""
+NVM_THEME_PROMPT_SUFFIX=""
+NODE_THEME_PROMPT_COLOR=22
+NODE_CHAR=${POWERLINE_NODE_CHAR:="❲n❳ "}
+
 RVM_THEME_PROMPT_PREFIX=""
 RVM_THEME_PROMPT_SUFFIX=""
 RBENV_THEME_PROMPT_PREFIX=""
@@ -57,7 +62,7 @@ IN_VIM_THEME_PROMPT_TEXT="vim"
 
 HOST_THEME_PROMPT_COLOR=0
 
-POWERLINE_LEFT_PROMPT=${POWERLINE_LEFT_PROMPT:="scm python_venv ruby cwd"}
+POWERLINE_LEFT_PROMPT=${POWERLINE_LEFT_PROMPT:="scm python_venv ruby node cwd"}
 POWERLINE_RIGHT_PROMPT=${POWERLINE_RIGHT_PROMPT:="in_vim clock battery user_info"}
 
 safe_append_prompt_command __powerline_prompt_command

themes/powerline-naked/README.md

@@ -54,6 +54,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `python_venv` - Python virtual environment information (`virtualenv`, `venv`
   and `conda` supported)
 * `ruby` - Current ruby version if using `rvm`
+* `node` - Current node version (only `nvm` is supported)
 * `scm` - Version control information, `git`
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder

themes/powerline-naked/powerline-naked.theme.bash

@@ -26,6 +26,11 @@ SCM_THEME_PROMPT_STAGED_COLOR=30
 SCM_THEME_PROMPT_UNSTAGED_COLOR=92
 SCM_THEME_PROMPT_COLOR=${SCM_THEME_PROMPT_CLEAN_COLOR}
 
+NVM_THEME_PROMPT_PREFIX=""
+NVM_THEME_PROMPT_SUFFIX=""
+NODE_CHAR=${POWERLINE_NODE_CHAR:="❲n❳ "}
+NODE_THEME_PROMPT_COLOR=22
+
 RVM_THEME_PROMPT_PREFIX=""
 RVM_THEME_PROMPT_SUFFIX=""
 RBENV_THEME_PROMPT_PREFIX=""
@@ -57,6 +62,6 @@ IN_VIM_THEME_PROMPT_TEXT="vim"
 
 HOST_THEME_PROMPT_COLOR=254
 
-POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
+POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command

themes/powerline-plain/README.md

@@ -52,6 +52,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `python_venv` - Python virtual environment information (`virtualenv`, `venv`
   and `conda` supported)
 * `ruby` - Current ruby version if using `rvm`
+* `node` - Current node version (only `nvm` is supported)
 * `scm` - Version control information, `git`
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder

themes/powerline-plain/powerline-plain.theme.bash

@@ -21,6 +21,11 @@ SCM_THEME_PROMPT_STAGED_COLOR=30
 SCM_THEME_PROMPT_UNSTAGED_COLOR=92
 SCM_THEME_PROMPT_COLOR=${SCM_THEME_PROMPT_CLEAN_COLOR}
 
+NVM_THEME_PROMPT_PREFIX=""
+NVM_THEME_PROMPT_SUFFIX=""
+NODE_CHAR=${POWERLINE_NODE_CHAR:="❲n❳ "}
+NODE_THEME_PROMPT_COLOR=22
+
 RVM_THEME_PROMPT_PREFIX=""
 RVM_THEME_PROMPT_SUFFIX=""
 RBENV_THEME_PROMPT_PREFIX=""
@@ -52,6 +57,6 @@ IN_VIM_THEME_PROMPT_TEXT="vim"
 
 HOST_THEME_PROMPT_COLOR=0
 
-POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
+POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command

themes/powerline/README.md

@@ -56,6 +56,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `python_venv` - Python virtual environment information (`virtualenv`, `venv`
   and `conda` supported)
 * `ruby` - Current ruby version if using `rvm`
+* `node` - Current node version (only `nvm` is supported)
 * `scm` - Version control information, `git`
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder

themes/powerline/powerline.base.bash

@@ -40,6 +40,13 @@ function __powerline_user_info_prompt {
   [[ -n "${user_info}" ]] && echo "${user_info}|${color}"
 }
 
+function __powerline_node_prompt {
+  local node_version=""
+
+  node_version="$(node_version_prompt)"
+  [[ -n "${node_version}" ]] && echo "${NODE_CHAR}${node_version}|${NODE_THEME_PROMPT_COLOR}"
+}
+
 function __powerline_ruby_prompt {
   local ruby_version=""
 

themes/powerline/powerline.theme.bash

@@ -24,6 +24,11 @@ SCM_THEME_PROMPT_STAGED_COLOR=30
 SCM_THEME_PROMPT_UNSTAGED_COLOR=92
 SCM_THEME_PROMPT_COLOR=${SCM_THEME_PROMPT_CLEAN_COLOR}
 
+NVM_THEME_PROMPT_PREFIX=""
+NVM_THEME_PROMPT_SUFFIX=""
+NODE_CHAR=${POWERLINE_NODE_CHAR:="❲n❳ "}
+NODE_THEME_PROMPT_COLOR=22
+
 RVM_THEME_PROMPT_PREFIX=""
 RVM_THEME_PROMPT_SUFFIX=""
 RBENV_THEME_PROMPT_PREFIX=""
@@ -55,7 +60,7 @@ IN_VIM_THEME_PROMPT_TEXT="vim"
 
 HOST_THEME_PROMPT_COLOR=0
 
-POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
+POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 HISTORY_AUTOSAVE=${HISTORY_AUTOSAVE:-0}