Merge pull request #66 from bobthecow/bobthefish

Add bobthefish theme.

themes/bobthefish/README.md

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+## bobthefish
+
+bobthefish is a Powerline-style, Git-aware fish theme optimized for awesome.
+
+![bobthefish][screenshot]
+
+You will probably need a [Powerline-patched font][patching] for this to work.
+[I recommend picking one of these][fonts].
+
+This theme is based loosely on [agnoster][agnoster].
+
+
+### Features
+
+ * A helpful, but not too distracting, greeting.
+ * A subtle timestamp hanging out off to the right.
+ * Powerline-style visual hotness.
+ * More colors than you know what to do with.
+ * An abbreviated path which doesn't abbreviate the name of the current project.
+ * All the things you need to know about Git in a glance.
+ * Visual indication that you can't write to the current directory.
+
+
+### The Prompt
+
+ * Flags:
+     * Previous command failed (!)
+     * Background jobs (%)
+     * You currently have superpowers ($)
+ * User@Host (unless you're the default user)
+ * Abbreviated parent directory
+ * Current directory or Git project name
+ * Current project's Git branch (⭠ master) or detached head (➦ d0dfd9b)
+ * Git status, via colors and flags:
+     * Dirty working directory (*)
+     * Untracked files (…)
+     * Staged changes (~)
+     * Stashed changes ($)
+     * Unpulled commits (-)
+     * Unpushed commits (+)
+     * Unpulled *and* unpushed commits (±)
+ * Abbreviated project-relative path
+
+
+[screenshot]: http://i.0x7f.us/bobthefish.png
+[patching]:   https://powerline.readthedocs.org/en/latest/fontpatching.html
+[fonts]:      https://github.com/Lokaltog/powerline-fonts
+[agnoster]:   https://gist.github.com/agnoster/3712874

themes/bobthefish/fish_greeting.fish

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+function fish_greeting
+  set_color $fish_color_autosuggestion[1]
+  uname -npsr
+  uptime
+  set_color normal
+end

themes/bobthefish/fish_prompt.fish

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+# name: bobthefish
+#
+# bobthefish is a Powerline-style, Git-aware fish theme optimized for awesome.
+#
+# You will probably need a Powerline-patched font for this to work:
+#
+#     https://powerline.readthedocs.org/en/latest/fontpatching.html
+#
+# I recommend picking one of these:
+#
+#     https://github.com/Lokaltog/powerline-fonts
+#
+# You can override some default options in your config.fish:
+#
+#     set -g theme_display_user yes
+#     set -g default_user your_normal_user
+
+set -g current_bg NONE
+
+# Powerline glyphs
+set branch_glyph            \uE0A0
+set ln_glyph                \uE0A1
+set padlock_glyph           \uE0A2
+set right_black_arrow_glyph \uE0B0
+set right_arrow_glyph       \uE0B1
+set left_black_arrow_glyph  \uE0B2
+set left_arrow_glyph        \uE0B3
+
+# Additional glyphs
+set detached_glyph          \u27A6
+set nonzero_exit_glyph      '! '
+set superuser_glyph         '$ '
+set bg_job_glyph            '% '
+
+# Colors
+set lt_green   addc10
+set med_green  189303
+set dk_green   0c4801
+
+set lt_red     C99
+set med_red    ce000f
+set dk_red     600
+
+set slate_blue 255e87
+
+set lt_orange  f6b117
+set dk_orange  3a2a03
+
+set dk_grey    333
+set med_grey   999
+set lt_grey    ccc
+
+# ===========================
+# Helper methods
+# ===========================
+
+function __bobthefish_in_git
+  command git rev-parse --is-inside-work-tree >/dev/null 2>&1
+end
+
+function __bobthefish_git_branch
+  set -l ref (command git symbolic-ref HEAD 2> /dev/null)
+  if [ $status -gt 0 ]
+    set -l branch (command git show-ref --head -s --abbrev |head -n1 2> /dev/null)
+    set ref "$detached_glyph $branch"
+  end
+  echo $ref | sed  "s-refs/heads/-$branch_glyph -"
+end
+
+function __bobthefish_pretty_parent -d 'Print a parent directory, shortened to fit the prompt'
+  echo -n (dirname $argv[1]) | sed -e 's|/private||' -e "s|^$HOME|~|" -e 's-/\(\.\{0,1\}[^/]\)\([^/]*\)-/\1-g' -e 's|/$||'
+end
+
+function __bobthefish_project_dir -d 'Print the current git project base directory'
+  command git rev-parse --show-toplevel 2>/dev/null
+end
+
+function __bobthefish_project_pwd -d 'Print the working directory relative to project root'
+  set -l base_dir (__bobthefish_project_dir)
+  echo "$PWD" | sed -e "s*$base_dir**g" -e 's*^/**'
+end
+
+
+# ===========================
+# Segment functions
+# ===========================
+
+function __bobthefish_start_segment -d 'Start a segment'
+  set_color -b $argv[1]
+  set_color $argv[2]
+  if [ "$current_bg" = 'NONE' ]
+    # If there's no background, just start one
+    echo -n ' '
+  else
+    # If there's already a background...
+    if [ "$argv[1]" = "$current_bg" ]
+      # and it's the same color, draw a separator
+      echo -n "$right_arrow_glyph "
+    else
+      # otherwise, draw the end of the previous segment and the start of the next
+      set_color $current_bg
+      echo -n "$right_black_arrow_glyph "
+      set_color $argv[2]
+    end
+  end
+  set current_bg $argv[1]
+end
+
+function __bobthefish_path_segment -d 'Display a shortened form of a directory'
+  if test -w "$argv[1]"
+    __bobthefish_start_segment $dk_grey $med_grey
+  else
+    __bobthefish_start_segment $dk_red $lt_red
+  end
+
+  set -l directory
+  set -l parent
+
+  switch "$argv[1]"
+    case /
+      set directory '/'
+    case "$HOME"
+      set directory '~'
+    case '*'
+      set parent    (__bobthefish_pretty_parent "$argv[1]")
+      set parent    "$parent/"
+      set directory (basename "$argv[1]")
+  end
+
+  test "$parent"; and echo -n -s "$parent"
+  set_color fff --bold
+  echo -n "$directory "
+  set_color normal
+end
+
+function __bobthefish_finish_segments -d 'Close open segments'
+  if [ -n $current_bg -a $current_bg != 'NONE' ]
+    set_color -b normal
+    set_color $current_bg
+    echo -n "$right_black_arrow_glyph "
+    set_color normal
+  end
+  set -g current_bg NONE
+end
+
+
+# ===========================
+# Theme components
+# ===========================
+
+function __bobthefish_prompt_status -d 'the symbols for a non zero exit status, root and background jobs'
+  set -l nonzero
+  set -l superuser
+  set -l bg_jobs
+
+  # Last exit was nonzero
+  if [ $RETVAL -ne 0 ]
+    set nonzero $nonzero_exit_glyph
+  end
+
+  # if superuser (uid == 0)
+  set -l uid (id -u $USER)
+  if [ $uid -eq 0 ]
+    set superuser $superuser_glyph
+  end
+
+  # Jobs display
+  if [ (jobs -l | wc -l) -gt 0 ]
+    set bg_jobs $bg_job_glyph
+  end
+
+  set -l status_flags "$nonzero$superuser$bg_jobs"
+
+  if test "$nonzero" -o "$superuser" -o "$bg_jobs"
+    __bobthefish_start_segment fff 000
+    if [ "$nonzero" ]
+      set_color $med_red --bold
+      echo -n $nonzero_exit_glyph
+    end
+
+    if [ "$superuser" ]
+      set_color $med_green --bold
+      echo -n $superuser_glyph
+    end
+
+    if [ "$bg_jobs" ]
+      set_color $slate_blue --bold
+      echo -n $bg_job_glyph
+    end
+  end
+end
+
+function __bobthefish_prompt_user -d 'Display actual user if different from $default_user'
+  if [ "$theme_display_user" = 'yes' ]
+    if [ "$USER" != "$default_user" -o -n "$SSH_CLIENT" ]
+      __bobthefish_start_segment $lt_grey $slate_blue
+      echo -n -s (whoami) '@' (hostname | cut -d . -f 1) ' '
+    end
+  end
+end
+
+# TODO: clean up the fugly $ahead business
+function __bobthefish_prompt_git -d 'Display the actual git state'
+  set -l dirty   (command git diff --no-ext-diff --quiet --exit-code; or echo -n '*')
+  set -l staged  (command git diff --cached --no-ext-diff --quiet --exit-code; or echo -n '~')
+  set -l stashed (command git rev-parse --verify refs/stash > /dev/null 2>&1; and echo -n '$')
+  set -l ahead   (command git branch -v 2> /dev/null | grep -Eo '^\* [^ ]* *[^ ]* *\[[^]]*\]' | grep -Eo '\[[^]]*\]$' | awk 'ORS="";/ahead/ {print "+"} /behind/ {print "-"}' | sed -e 's/+-/±/')
+
+  set -l new (command git ls-files --other --exclude-standard);
+  test "$new"; and set new '…'
+
+  set -l flags   "$dirty$staged$stashed$ahead$new"
+  test "$flags"; and set flags " $flags"
+
+  set -l flag_bg $lt_green
+  set -l flag_fg $dk_green
+  if test "$dirty" -o "$staged"
+    set flag_bg $med_red
+    set flag_fg fff
+  else
+    if test "$stashed"
+      set flag_bg $lt_orange
+      set flag_fg $dk_orange
+    end
+  end
+
+  __bobthefish_path_segment (__bobthefish_project_dir)
+
+  __bobthefish_start_segment $flag_bg $flag_fg
+  set_color $flag_fg --bold
+  echo -n -s (__bobthefish_git_branch) $flags ' '
+  set_color normal
+
+  set -l project_pwd  (__bobthefish_project_pwd)
+  if test "$project_pwd"
+    if test -w "$PWD"
+      __bobthefish_start_segment 333 999
+    else
+      __bobthefish_start_segment $med_red $lt_red
+    end
+
+    echo -n -s $project_pwd ' '
+  end
+end
+
+function __bobthefish_prompt_dir -d 'Display a shortened form of the current directory'
+  __bobthefish_path_segment "$PWD"
+end
+
+
+# ===========================
+# Apply theme
+# ===========================
+
+function fish_prompt
+  set -g RETVAL $status
+  __bobthefish_prompt_status
+  __bobthefish_prompt_user
+  if __bobthefish_in_git
+    __bobthefish_prompt_git
+  else
+    __bobthefish_prompt_dir
+  end
+  __bobthefish_finish_segments
+end

themes/bobthefish/fish_right_prompt.fish

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+function fish_right_prompt
+  set_color $fish_color_autosuggestion[1]
+  date
+  set_color normal
+end

themes/bobthefish/fish_title.fish

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+function fish_title
+  echo $_ ' '
+  pwd
+end