fish: switched to taktoa theme

shells/fish/functions/fish_prompt.fish

@@ -1,16 +1,81 @@
-function fish_prompt --description 'Write out the prompt'
-	# Just calculate these once, to save a few cycles when displaying the prompt
-   if not set -q __fish_prompt_hostname
-       set -g __fish_prompt_hostname (hostname -s)
-   end
+# name: taktoa
+# by taktoa (Remy Goldschmidt) <taktoa@gmail.com>
+# License: public domain
 
-   if not set -q __fish_prompt_normal
-       set -g __fish_prompt_normal (set_color normal)
-   end
-
-   if not set -q __fish_prompt_cwd
-       set -g __fish_prompt_cwd (set_color $fish_color_cwd)
-   end
-
-   echo -n -s "$USER" @ "$__fish_prompt_hostname" ' ' "$__fish_prompt_cwd" (prompt_pwd) (__fish_vcs_prompt) "$__fish_prompt_normal" '> '
+function _git_branch_name
+  echo (command git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
 end
+
+function _git_status_symbol
+  set -l git_status (git status --porcelain ^/dev/null)
+  if test -n "$git_status"
+    if git status --porcelain ^/dev/null | grep '^.[^ ]' >/dev/null
+      echo '*' # dirty
+    else
+      echo '#' # all staged
+    end
+  else
+    echo    '' # clean
+  end
+end
+
+function _remote_hostname
+  echo (whoami)
+  if test -n "$SSH_CONNECTION"
+    echo " (ssh)"
+  end
+end
+
+function _get_tmux_window
+  tmux lsw | grep active | sed 's/\*.*$//g;s/: / /1' | awk '{ print $2 "-" $1 }' -
+end
+
+function _get_screen_window
+  set initial (screen -Q windows; screen -Q echo "")
+  set middle (echo $initial | sed 's/  /\n/g' | grep '\*' | sed 's/\*\$ / /g')
+  echo $middle | awk '{ print $2 "-" $1 }' -
+end
+
+function _is_multiplexed
+  set multiplexer ""
+  if test -z $TMUX
+  else
+    set multiplexer "tmux"
+  end
+  if test -z $WINDOW
+  else
+    set multiplexer "screen"
+  end
+  echo $multiplexer
+end
+
+function fish_prompt
+  set -l cyan (set_color cyan)
+  set -l brown (set_color brown)
+  set -l normal (set_color normal)
+
+  set -l arrow "λ"
+  set -l cwd (set_color $fish_color_cwd)(prompt_pwd)
+  set -l git_status (_git_status_symbol)(_git_branch_name)
+
+  if test -n "$git_status"
+    set git_status " $git_status"
+  end
+
+  set multiplexer (_is_multiplexed)
+
+  switch $multiplexer
+    case screen
+      set pane (_get_screen_window)
+    case tmux
+      set pane (_get_tmux_window)
+   end
+
+  if test -z $pane
+    set window ""
+  else
+    set window " ($pane)"
+  end
+
+  echo -n -s (_remote_hostname) ' ' $cwd $brown $window $cyan $git_status $normal ' ' $arrow ' '
+end