[split] Move theme plugin to oh-my-fish/plugin-theme

https://github.com/oh-my-fish/plugin-theme

plugins/theme/README.md

-## _theme_ :tophat:
-> Quick theme switcher.
-
-## Description
-Quick theme switcher for _Oh my fish_. _theme_ is smart to auto-complete as you type all the available _oh-my-fish_ themes.
-
-![mov](https://cloud.githubusercontent.com/assets/8317250/6200763/8593a226-b4c9-11e4-9845-597be49d3233.gif)
-
-
-## Options
-
-#### `theme <theme name>`
-
-  Quick switch to theme.
-
-#### `theme -l --list`
-
-  List available themes.
-
-#### `theme -r --restore`
-
-  Restore original theme.
-
-#### `theme -h --help`
-
-  Show usage help.
-
-## Authors
-
-+ [Jorge Bucaran](https://github.com/bucaran)
-
-## Credits
-
-+ Auto-completions thanks to [Bruno Pinto](https://github.com/bpinto).
-
-## License
-
-MIT

plugins/theme/completions/theme.fish

-# Add completions when the theme is loaded. Thanks Bruno!
-complete --command (basename -s.fish (status -f)) \
-  --arguments "(basename (theme.util.get.themes))" \
-  --description "Oh-my-fish theme"

plugins/theme/spec/theme.spec.fish

-import plugins/fish-spec
-import plugins/theme
-
-function describe_theme -d "theme: quick theme switcher"
-  function before_all
-    set -g __theme_test_last_theme $fish_theme
-  end
-
-  function it_changes_the_current_theme
-    theme bobthefish
-    expect $fish_theme --to-equal bobthefish
-      and expect $fish_function_path --to-contain-all $fish_path/themes/bobthefish
-  end
-
-  function it_restores_the_original_theme
-    theme bobthefish
-    theme -r
-    expect $fish_theme --to-equal $__theme_test_last_theme
-  end
-
-  function it_prints_usage_help
-    expect (theme -h | grep USAGE | sed -E 's/ //g') --to-equal "USAGE"
-  end
-
-  function it_prints_a_list_of_all_themes
-    set -l themes (theme -l)
-    for theme in $fish_custom/themes/* $fish_path/themes/*
-      set theme (basename "$theme")
-      expect (echo "$themes" | grep -o "$theme") --to-equal "$theme"
-    end
-  end
-
-  function it_highlights_the_currently_selected_theme
-    set -l themes (theme -l)
-    expect (echo "$themes" | grep -o "$fish_theme\*") --to-equal "$fish_theme*"
-  end
-
-  function it_can_reload_a_theme_multiple_times
-    theme bobthefish
-    theme fishface
-    theme bobthefish
-    expect $fish_theme --to-equal bobthefish
-      and expect $fish_function_path --to-contain-all $fish_path/themes/bobthefish
-      and expect $fish_function_path --to-not-contain-all $fish_path/themes/fishface
-  end
-
-  function it_returns_1_if_the_theme_does_not_exist
-    set -l improbable_theme ___(date +%s)___
-    set -l ignore_output (theme "$improbable_theme")
-    expect $status --to-equal 1
-  end
-end
-
-spec.run $argv

plugins/theme/theme.fish

-# NAME
-#   theme - quick theme switcher
-#
-# DESCRIPTION
-#   Quick theme switcher for Oh my fish. theme is smart to auto-complete
-#   as you type from the list available _oh-my-fish_ themes.
-#
-# SYNOPSIS
-#   theme <theme name>
-#         [-l --list]
-#         [-u --update]
-#         [-r --restore]
-#         [-h --help]
-#
-# OPTIONS
-#   theme <theme name>
-#     Quick switch to theme.
-#
-#   theme -l --list
-#     List available themes.
-#
-#   theme -u --update
-#     Update theme auto-completions.
-#
-#   theme -r --restore
-#     Restore original theme.
-#
-#   theme -h --help
-#     Show usage help.
-#
-# AUTHORS
-#   Jorge Bucaran <jbucaran@me.com>
-# /
-
-if not set -q __fish_theme_last
-  set -g __fish_theme_last $fish_theme
-end
-
-function theme -d "quick theme switcher"
-  set -l usage "
-    USAGE
-      $_ <theme name>
-        Quick switch to theme.
-
-      $_ -l --list
-        List available themes.
-
-      $_ -r --restore
-        Restore original theme.
-
-      $_ -h --help
-        Show usage help.
-  "
-  if test (count $argv) -gt 0
-    set -l option $argv[1]
-    switch $option
-      case -h --help help
-        echo $usage
-
-      case -l --list
-        set -l regex "[[:<:]]($fish_theme)[[:>:]]"
-        if test (uname) != "Darwin"
-          set regex "\b($fish_theme)\b"
-        end
-        set -l color green
-        for theme in (theme.util.get.themes)
-          basename $theme \
-            | sed -E "s/$regex/"(set_color $color)"\1*"(set_color normal)"/"
-        end | column
-        set_color normal
-
-      case -r --restore
-        if set -q __fish_theme_last
-          if test $__fish_theme_last != $fish_theme
-            theme.util.remove.current
-
-            set fish_theme $__fish_theme_last
-            . $fish_path/oh-my-fish.fish
-          end
-        end
-
-      case \*
-        if test -z "$option"
-          echo $usage
-
-        else if test -d $fish_custom/themes/$option -o \
-                     -d $fish_path/themes/$option
-
-          theme.util.remove.current
-
-          set fish_theme $option
-          . $fish_path/oh-my-fish.fish
-
-        else
-          echo (set_color f00)"`$option` is not a theme."(set_color normal) ^&2
-          theme --list
-          return 1
-        end
-    end
-  else
-    theme --list
-  end
-end

plugins/theme/theme.util.get.themes.fish

-function theme.util.get.themes
-  printf "%s\n" $fish_path/themes/*
-end

plugins/theme/theme.util.remove.current.fish

-function theme.util.remove.current
-  # Find previously loaded theme index in function path.
-  set -l index (contains -i -- \
-    $fish_custom/themes/$fish_theme $fish_function_path)
-
-  if test $status -gt 0
-  # Not a custom theme, try a default theme.
-    set index (contains -i -- \
-      $fish_path/themes/$fish_theme $fish_function_path)
-  end
-
-  if test -n "$index"
-    # So Long, and Thanks for All the Fish.
-    set -e fish_function_path[$index]
-  end
-end