From d8b847c67fe7952e15ba8946d49216783d4a96d0 Mon Sep 17 00:00:00 2001
From: romkatv <roman.perepelitsa@gmail.com>
Date: Thu, 2 Jan 2020 18:03:59 +0100
Subject: [PATCH] add jenv prompt segment; see #342

---
 config/p10k-classic.zsh | 12 ++++++++++
 config/p10k-lean.zsh    | 12 ++++++++++
 config/p10k-rainbow.zsh | 13 +++++++++++
 internal/p10k.zsh       | 51 ++++++++++++++++++++++++++++++++++++++++-
 4 files changed, 87 insertions(+), 1 deletion(-)

diff --git a/config/p10k-classic.zsh b/config/p10k-classic.zsh
index 3d69ec0f..2d3fe495 100644
--- a/config/p10k-classic.zsh
+++ b/config/p10k-classic.zsh
@@ -63,6 +63,7 @@
       rvm                     # ruby version from rvm (https://rvm.io)
       fvm                     # flutter version management (https://github.com/leoafarias/fvm)
       luaenv                  # lua version from luaenv (https://github.com/cehoffman/luaenv)
+      jenv                    # java version from jenv (https://github.com/jenv/jenv)
       kubecontext             # current kubernetes context (https://kubernetes.io/)
       terraform               # terraform workspace (https://www.terraform.io)
       aws                     # aws profile (https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html)
@@ -732,6 +733,17 @@
   # Custom icon.
   # typeset -g POWERLEVEL9K_LUAENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
 
+  ###############[ jenv: java version from jenv (https://github.com/jenv/jenv) ]################
+  # Java color.
+  typeset -g POWERLEVEL9K_JENV_FOREGROUND=32
+  # Hide java version if it doesn't come from one of these sources.
+  typeset -g POWERLEVEL9K_JENV_SOURCES=(shell local global)
+  # If set to false, hide java version if it's the same as global:
+  # $(jenv version-name) == $(jenv global).
+  typeset -g POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW=false
+  # Custom icon.
+  # typeset -g POWERLEVEL9K_JENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
+
   ################[ terraform: terraform workspace (https://www.terraform.io) ]#################
   # Terraform color.
   typeset -g POWERLEVEL9K_TERRAFORM_FOREGROUND=38
diff --git a/config/p10k-lean.zsh b/config/p10k-lean.zsh
index 07aac5aa..e8bc2ccb 100644
--- a/config/p10k-lean.zsh
+++ b/config/p10k-lean.zsh
@@ -63,6 +63,7 @@
       rvm                     # ruby version from rvm (https://rvm.io)
       fvm                     # flutter version management (https://github.com/leoafarias/fvm)
       luaenv                  # lua version from luaenv (https://github.com/cehoffman/luaenv)
+      jenv                    # java version from jenv (https://github.com/jenv/jenv)
       kubecontext             # current kubernetes context (https://kubernetes.io/)
       terraform               # terraform workspace (https://www.terraform.io)
       aws                     # aws profile (https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html)
@@ -708,6 +709,17 @@
   # Custom icon.
   # typeset -g POWERLEVEL9K_LUAENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
 
+  ###############[ jenv: java version from jenv (https://github.com/jenv/jenv) ]################
+  # Java color.
+  typeset -g POWERLEVEL9K_JENV_FOREGROUND=32
+  # Hide java version if it doesn't come from one of these sources.
+  typeset -g POWERLEVEL9K_JENV_SOURCES=(shell local global)
+  # If set to false, hide java version if it's the same as global:
+  # $(jenv version-name) == $(jenv global).
+  typeset -g POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW=false
+  # Custom icon.
+  # typeset -g POWERLEVEL9K_JENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
+
   #############[ kubecontext: current kubernetes context (https://kubernetes.io/) ]#############
   # Kubernetes context classes for the purpose of using different colors, icons and expansions with
   # different contexts.
diff --git a/config/p10k-rainbow.zsh b/config/p10k-rainbow.zsh
index ec7b0c76..d2558579 100644
--- a/config/p10k-rainbow.zsh
+++ b/config/p10k-rainbow.zsh
@@ -63,6 +63,7 @@
       rvm                     # ruby version from rvm (https://rvm.io)
       fvm                     # flutter version management (https://github.com/leoafarias/fvm)
       luaenv                  # lua version from luaenv (https://github.com/cehoffman/luaenv)
+      jenv                    # java version from jenv (https://github.com/jenv/jenv)
       kubecontext             # current kubernetes context (https://kubernetes.io/)
       terraform               # terraform workspace (https://www.terraform.io)
       aws                     # aws profile (https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html)
@@ -753,6 +754,18 @@
   # Custom icon.
   # typeset -g POWERLEVEL9K_LUAENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
 
+  ###############[ jenv: java version from jenv (https://github.com/jenv/jenv) ]################
+  # Java color.
+  # typeset -g POWERLEVEL9K_JENV_FOREGROUND=1
+  # typeset -g POWERLEVEL9K_JENV_BACKGROUND=7
+  # Hide java version if it doesn't come from one of these sources.
+  typeset -g POWERLEVEL9K_JENV_SOURCES=(shell local global)
+  # If set to false, hide java version if it's the same as global:
+  # $(jenv version-name) == $(jenv global).
+  typeset -g POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW=false
+  # Custom icon.
+  # typeset -g POWERLEVEL9K_JENV_VISUAL_IDENTIFIER_EXPANSION='⭐'
+
   ################[ terraform: terraform workspace (https://www.terraform.io) ]#################
   # Terraform color.
   # typeset -g POWERLEVEL9K_TERRAFORM_FOREGROUND=4
diff --git a/internal/p10k.zsh b/internal/p10k.zsh
index 2fcf2fc4..4c20a8e6 100644
--- a/internal/p10k.zsh
+++ b/internal/p10k.zsh
@@ -2204,6 +2204,53 @@ prompt_luaenv() {
   _p9k_prompt_segment "$0" blue "$_p9k_color1" 'LUA_ICON' 0 '' "${v//\%/%%}"
 }
 
+function _p9k_read_jenv_version_file() {
+  [[ -r $1 ]] || return
+  local rest
+  read _p9k_ret rest <$1 2>/dev/null
+  [[ -n $_p9k_ret ]]
+}
+
+function _p9k_jenv_global_version() {
+  _p9k_read_jenv_version_file ${JENV_ROOT:-$HOME/.jenv}/version || _p9k_ret=system
+}
+
+################################################################
+# Segment to display jenv information
+# https://github.com/jenv/jenv
+prompt_jenv() {
+  (( $+commands[jenv] || $+functions[jenv] )) || return
+  if [[ -n $JENV_VERSION ]]; then
+    (( ${_POWERLEVEL9K_JENV_SOURCES[(I)shell]} )) || return
+    local v=$JENV_VERSION
+  else
+    (( ${_POWERLEVEL9K_JENV_SOURCES[(I)local|global]} )) || return
+    [[ $JENV_DIR == /* ]] && local dir=$JENV_DIR || local dir="$_p9k_pwd_a/$JENV_DIR"
+    while true; do
+      if _p9k_read_jenv_version_file $dir/.java-version; then
+        (( ${_POWERLEVEL9K_JENV_SOURCES[(I)local]} )) || return
+        local v=$_p9k_ret
+        break
+      fi
+      if [[ $dir == / ]]; then
+        (( _POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW )) || return
+        (( ${_POWERLEVEL9K_JENV_SOURCES[(I)global]} )) || return
+        _p9k_jenv_global_version
+        local v=$_p9k_ret
+        break
+      fi
+      dir=${dir:h}
+    done
+  fi
+
+  if (( !_POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW )); then
+    _p9k_jenv_global_version
+    [[ $v == $_p9k_ret ]] && return
+  fi
+
+  _p9k_prompt_segment "$0" white red 'JAVA_ICON' 0 '' "${v//\%/%%}"
+}
+
 ################################################################
 # Segment to display chruby information
 # see https://github.com/postmodern/chruby/issues/245 for chruby_auto issue with ZSH
@@ -4983,6 +5030,8 @@ _p9k_init_params() {
   _p9k_declare -a POWERLEVEL9K_RBENV_SOURCES -- shell local global
   _p9k_declare -b POWERLEVEL9K_LUAENV_PROMPT_ALWAYS_SHOW 0
   _p9k_declare -a POWERLEVEL9K_LUAENV_SOURCES -- shell local global
+  _p9k_declare -b POWERLEVEL9K_JENV_PROMPT_ALWAYS_SHOW 0
+  _p9k_declare -a POWERLEVEL9K_JENV_SOURCES -- shell local global
   _p9k_declare -b POWERLEVEL9K_RVM_SHOW_GEMSET 0
   _p9k_declare -b POWERLEVEL9K_RVM_SHOW_PREFIX 0
   _p9k_declare -b POWERLEVEL9K_CHRUBY_SHOW_VERSION 1
@@ -5569,7 +5618,7 @@ _p9k_must_init() {
     [[ $sig == $_p9k__param_sig ]] && return 1
     _p9k_deinit
   fi
-  _p9k__param_pat=$'v19\1'${ZSH_VERSION}$'\1'${ZSH_PATCHLEVEL}$'\1'
+  _p9k__param_pat=$'v20\1'${ZSH_VERSION}$'\1'${ZSH_PATCHLEVEL}$'\1'
   _p9k__param_pat+=$'${#parameters[(I)POWERLEVEL9K_*]}\1${(%):-%n%#}\1$GITSTATUS_LOG_LEVEL\1'
   _p9k__param_pat+=$'$GITSTATUS_ENABLE_LOGGING\1$GITSTATUS_DAEMON\1$GITSTATUS_NUM_THREADS\1'
   _p9k__param_pat+=$'$DEFAULT_USER\1${ZLE_RPROMPT_INDENT:-1}\1$P9K_SSH\1$__p9k_ksh_arrays'