1 files changed, 385 insertions, 0 deletions
diff --git a/base/zsh/prompt_pure_setup b/base/zsh/prompt_pure_setup
new file mode 100644
index 0000000..d9b7f2d
--- /dev/null
+++ b/base/zsh/prompt_pure_setup
@@ -0,0 +1,385 @@
+# Quickref
+# git:
+# %b => current branch
+# %a => current action (rebase/merge)
+# prompt:
+# %F => color dict
+# %f => reset color
+# %~ => current path
+# %* => time
+# %n => username
+# %m => shortname host
+# %(?..) => prompt conditional - %(condition.true.false)
+# terminal codes:
+# \e7   => save cursor position
+# \e[2A => move cursor 2 lines up
+# \e[1G => go to position 1 in terminal
+# \e8   => restore cursor position
+# \e[K  => clears everything after the cursor on the current line
+# \e[2K => clear everything on the current line
+
+PURER_PROMPT_COMMAND_COUNT=0
+STATUS_COLOR=6
+
+# turns seconds into human readable time
+# 165392 => 1d 21h 56m 32s
+# https://github.com/sindresorhus/pretty-time-zsh
+prompt_pure_human_time_to_var() {
+  local human=" [" total_seconds=$1 var=$2
+  local days=$(( total_seconds / 60 / 60 / 24 ))
+  local hours=$(( total_seconds / 60 / 60 % 24 ))
+  local minutes=$(( total_seconds / 60 % 60 ))
+  local seconds=$(( total_seconds % 60 ))
+  (( days > 0 )) && human+="${days}d "
+  (( hours > 0 )) && human+="${hours}h "
+  (( minutes > 0 )) && human+="${minutes}m "
+  human+="${seconds}s]"
+
+  # store human readable time in variable as specified by caller
+  typeset -g "${var}"="${human}"
+}
+
+# stores (into prompt_pure_cmd_exec_time) the exec time of the last command if set threshold was exceeded
+prompt_pure_check_cmd_exec_time() {
+  integer elapsed
+  (( elapsed = EPOCHSECONDS - ${prompt_pure_cmd_timestamp:-$EPOCHSECONDS} ))
+  prompt_pure_cmd_exec_time=
+  (( elapsed > ${PURE_CMD_MAX_EXEC_TIME:=15} )) && {
+    prompt_pure_human_time_to_var $elapsed "prompt_pure_cmd_exec_time"
+  }
+}
+
+prompt_pure_clear_screen() {
+  # enable output to terminal
+  zle -I
+  # clear screen and move cursor to (0, 0)
+  print -n '\e[2J\e[0;0H'
+  # reset command count to zero so we don't start with a blank line
+  PURER_PROMPT_COMMAND_COUNT=0
+  # print preprompt
+  prompt_pure_preprompt_render precmd
+}
+
+# set STATUS_COLOR: cyan for "insert", green for "normal" mode.
+prompt_purer_vim_mode() {
+  STATUS_COLOR="${${KEYMAP/vicmd/16}/(main|viins)/6}"
+  prompt_pure_preprompt_render
+}
+
+prompt_pure_set_title() {
+  # emacs terminal does not support settings the title
+  (( ${+EMACS} )) && return
+
+  # tell the terminal we are setting the title
+  print -n '\e]0;'
+  # show hostname if connected through ssh
+  [[ -n $SSH_CONNECTION ]] && print -Pn '(%m) '
+  case $1 in
+    expand-prompt)
+      print -Pn $2;;
+    ignore-escape)
+      print -rn $2;;
+  esac
+  # end set title
+  print -n '\a'
+}
+
+prompt_pure_preexec() {
+  # attempt to detect and prevent prompt_pure_async_git_fetch from interfering with user initiated git or hub fetch
+  [[ $2 =~ (git|hub)\ .*(pull|fetch) ]] && async_flush_jobs 'prompt_pure'
+
+  prompt_pure_cmd_timestamp=$EPOCHSECONDS
+
+  # shows the current dir and executed command in the title while a process is active
+  prompt_pure_set_title 'ignore-escape' "$PWD:t: $2"
+}
+
+# string length ignoring ansi escapes
+prompt_pure_string_length_to_var() {
+  local str=$1 var=$2 length
+  # perform expansion on str and check length
+  length=$(( ${#${(S%%)str//(\%([KF1]|)\{*\}|\%[Bbkf])}} ))
+
+  # store string length in variable as specified by caller
+  typeset -g "${var}"="${length}"
+}
+
+prompt_pure_preprompt_render() {
+  # store the current prompt_subst setting so that it can be restored later
+  local prompt_subst_status=$options[prompt_subst]
+
+  # make sure prompt_subst is unset to prevent parameter expansion in preprompt
+  setopt local_options no_prompt_subst
+
+  # check that no command is currently running, the preprompt will otherwise be rendered in the wrong place
+  [[ -n ${prompt_pure_cmd_timestamp+x} && "$1" != "precmd" ]] && return
+
+  # set color for git branch/dirty status, change color if dirty checking has been delayed
+  local git_color=20
+  [[ -n ${prompt_pure_git_last_dirty_check_timestamp+x} ]] && git_color=1
+
+  # construct preprompt
+  local preprompt=""
+
+  # add a newline between commands
+  FIRST_COMMAND_THRESHOLD=1
+  if [[ "$PURER_PROMPT_COMMAND_COUNT" -gt "$FIRST_COMMAND_THRESHOLD" ]]; then
+    preprompt+=$'\n'
+  fi
+
+  # host ID
+  if [[ "$PROMPT_HOST_COLOR" ]]; then
+    preprompt+="%b%F{black}%K{$PROMPT_HOST_COLOR} "
+    [[ "$PROMPT_SHORT_HOSTNAME" ]] && preprompt+="$PROMPT_SHORT_HOSTNAME "
+    preprompt+="%F{$PROMPT_HOST_COLOR}%K{18}%f"
+  fi
+  preprompt+="%K{18} "
+  # directory, colored by vim status
+  preprompt+="%B%F{$STATUS_COLOR}%c%f%b"
+  # git info
+  preprompt+="%F{$git_color}${vcs_info_msg_0_}${prompt_pure_git_dirty}%f"
+  # git pull/push arrows
+  preprompt+="%F{cyan}${prompt_pure_git_arrows}%f"
+  # username and machine if applicable
+  #preprompt+=$prompt_pure_username
+  # execution time
+  preprompt+="%F{20}${prompt_pure_cmd_exec_time}%f"
+  # end with symbol, colored by previous command exit code
+  # local symbol_color="%(?.${PURE_PROMPT_SYMBOL_COLOR:-magenta}.red)"
+  # preprompt+=" %F{$symbol_color}${PURE_PROMPT_SYMBOL:-❯}%f"
+  preprompt+=" %F{18}%(?.%k.%K{1}%F{1}%k)%f"
+  # 
+
+  preprompt+=" "
+
+  # make sure prompt_pure_last_preprompt is a global array
+  typeset -g -a prompt_pure_last_preprompt
+
+  PROMPT="$preprompt"
+
+  # if executing through precmd, do not perform fancy terminal editing
+  if [[ "$1" != "precmd" ]]; then
+    # only redraw if the expanded preprompt has changed
+    # [[ "${prompt_pure_last_preprompt[2]}" != "${(S%%)preprompt}" ]] || return
+
+    # redraw prompt (also resets cursor position)
+    zle && zle .reset-prompt
+
+    setopt no_prompt_subst
+  fi
+
+  # store both unexpanded and expanded preprompt for comparison
+  prompt_pure_last_preprompt=("$preprompt" "${(S%%)preprompt}")
+}
+
+prompt_pure_precmd() {
+  # check exec time and store it in a variable
+  prompt_pure_check_cmd_exec_time
+
+  # by making sure that prompt_pure_cmd_timestamp is defined here the async functions are prevented from interfering
+  # with the initial preprompt rendering
+  prompt_pure_cmd_timestamp=
+
+  # shows the full path in the title
+  prompt_pure_set_title 'expand-prompt' '%~'
+
+  # get vcs info
+  vcs_info
+
+  # preform async git dirty check and fetch
+  prompt_pure_async_tasks
+
+  # Increment command counter
+  PURER_PROMPT_COMMAND_COUNT=$((PURER_PROMPT_COMMAND_COUNT+1))
+
+  # print the preprompt
+  prompt_pure_preprompt_render "precmd"
+
+  # remove the prompt_pure_cmd_timestamp, indicating that precmd has completed
+  unset prompt_pure_cmd_timestamp
+}
+
+# fastest possible way to check if repo is dirty
+prompt_pure_async_git_dirty() {
+  setopt localoptions noshwordsplit
+  local untracked_dirty=$1 dir=$2
+
+  # use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
+  builtin cd -q $dir
+
+  if [[ $untracked_dirty = 0 ]]; then
+    command git diff --no-ext-diff --quiet --exit-code
+  else
+    test -z "$(command git status --porcelain --ignore-submodules -unormal)"
+  fi
+
+  return $?
+}
+
+prompt_pure_async_git_fetch() {
+  setopt localoptions noshwordsplit
+  # use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
+  builtin cd -q $1
+
+  # set GIT_TERMINAL_PROMPT=0 to disable auth prompting for git fetch (git 2.3+)
+  export GIT_TERMINAL_PROMPT=0
+  # set ssh BachMode to disable all interactive ssh password prompting
+  export GIT_SSH_COMMAND=${GIT_SSH_COMMAND:-"ssh -o BatchMode=yes"}
+
+  command git -c gc.auto=0 fetch &>/dev/null || return 1
+
+  # check arrow status after a successful git fetch
+  prompt_pure_async_git_arrows $1
+}
+
+prompt_pure_async_git_arrows() {
+  setopt localoptions noshwordsplit
+  builtin cd -q $1
+  command git rev-list --left-right --count HEAD...@'{u}'
+}
+
+prompt_pure_async_tasks() {
+  setopt localoptions noshwordsplit
+
+  # initialize async worker
+  ((!${prompt_pure_async_init:-0})) && {
+    async_start_worker "prompt_pure" -u -n
+    async_register_callback "prompt_pure" prompt_pure_async_callback
+    prompt_pure_async_init=1
+  }
+
+  # store working_tree without the "x" prefix
+  local working_tree="${vcs_info_msg_1_#x}"
+
+  # check if the working tree changed (prompt_pure_current_working_tree is prefixed by "x")
+  if [[ ${prompt_pure_current_working_tree#x} != $working_tree ]]; then
+    # stop any running async jobs
+    async_flush_jobs "prompt_pure"
+
+    # reset git preprompt variables, switching working tree
+    unset prompt_pure_git_dirty
+    unset prompt_pure_git_last_dirty_check_timestamp
+    prompt_pure_git_arrows=
+
+    # set the new working tree and prefix with "x" to prevent the creation of a named path by AUTO_NAME_DIRS
+    prompt_pure_current_working_tree="x${working_tree}"
+  fi
+
+  # only perform tasks inside git working tree
+  [[ -n $working_tree ]] || return
+
+  async_job "prompt_pure" prompt_pure_async_git_arrows $working_tree
+
+  # do not preform git fetch if it is disabled or working_tree == HOME
+  if (( ${PURE_GIT_PULL:-1} )) && [[ $working_tree != $HOME ]]; then
+    # tell worker to do a git fetch
+    async_job "prompt_pure" prompt_pure_async_git_fetch $working_tree
+  fi
+
+  # if dirty checking is sufficiently fast, tell worker to check it again, or wait for timeout
+  integer time_since_last_dirty_check=$(( EPOCHSECONDS - ${prompt_pure_git_last_dirty_check_timestamp:-0} ))
+  if (( time_since_last_dirty_check > ${PURE_GIT_DELAY_DIRTY_CHECK:-1800} )); then
+    unset prompt_pure_git_last_dirty_check_timestamp
+    # check check if there is anything to pull
+    async_job "prompt_pure" prompt_pure_async_git_dirty ${PURE_GIT_UNTRACKED_DIRTY:-1} $working_tree
+  fi
+}
+
+prompt_pure_check_git_arrows() {
+  setopt localoptions noshwordsplit
+  local arrows left=${1:-0} right=${2:-0}
+
+  (( right > 0 )) && arrows+=${PURE_GIT_DOWN_ARROW:-⇣}
+  (( left > 0 )) && arrows+=${PURE_GIT_UP_ARROW:-⇡}
+
+  [[ -n $arrows ]] || return
+  typeset -g REPLY=" $arrows"
+}
+
+prompt_pure_async_callback() {
+  setopt localoptions noshwordsplit
+  local job=$1 code=$2 output=$3 exec_time=$4
+
+  case $job in
+    prompt_pure_async_git_dirty)
+      local prev_dirty=$prompt_pure_git_dirty
+      if (( code == 0 )); then
+        prompt_pure_git_dirty=
+      else
+        prompt_pure_git_dirty="*"
+      fi
+
+      [[ $prev_dirty != $prompt_pure_git_dirty ]] && prompt_pure_preprompt_render
+
+      # When prompt_pure_git_last_dirty_check_timestamp is set, the git info is displayed in a different color.
+      # To distinguish between a "fresh" and a "cached" result, the preprompt is rendered before setting this
+      # variable. Thus, only upon next rendering of the preprompt will the result appear in a different color.
+      (( $exec_time > 2 )) && prompt_pure_git_last_dirty_check_timestamp=$EPOCHSECONDS
+      ;;
+    prompt_pure_async_git_fetch|prompt_pure_async_git_arrows)
+      # prompt_pure_async_git_fetch executes prompt_pure_async_git_arrows
+      # after a successful fetch.
+      if (( code == 0 )); then
+        local REPLY
+        prompt_pure_check_git_arrows ${(ps:\t:)output}
+        if [[ $prompt_pure_git_arrows != $REPLY ]]; then
+          prompt_pure_git_arrows=$REPLY
+          prompt_pure_preprompt_render
+        fi
+      fi
+      ;;
+  esac
+}
+
+prompt_pure_setup() {
+  # prevent percentage showing up
+  # if output doesn't end with a newline
+  export PROMPT_EOL_MARK=''
+
+  # prompt_opts=(subst percent)
+
+  # borrowed from promptinit, sets the prompt options in case pure was not
+  # initialized via promptinit.
+  # setopt noprompt{bang,cr,percent,subst} "prompt${^prompt_opts[@]}"
+
+  zmodload zsh/datetime
+  zmodload zsh/zle
+  zmodload zsh/parameter
+
+  autoload -Uz add-zsh-hook
+  autoload -Uz vcs_info
+  autoload -Uz async && async
+
+  add-zsh-hook precmd prompt_pure_precmd
+  add-zsh-hook preexec prompt_pure_preexec
+
+  zstyle ':vcs_info:*' enable git
+  zstyle ':vcs_info:*' use-simple true
+  # only export two msg variables from vcs_info
+  zstyle ':vcs_info:*' max-exports 2
+  # vcs_info_msg_0_ = ' %b' (for branch)
+  # vcs_info_msg_1_ = 'x%R' git top level (%R), x-prefix prevents creation of a named path (AUTO_NAME_DIRS)
+  zstyle ':vcs_info:git*' formats ' %b' 'x%R'
+  zstyle ':vcs_info:git*' actionformats ' %b|%a' 'x%R'
+
+  # if the user has not registered a custom zle widget for clear-screen,
+  # override the builtin one so that the preprompt is displayed correctly when
+  # ^L is issued.
+  if [[ $widgets[clear-screen] == 'builtin' ]]; then
+    zle -N clear-screen prompt_pure_clear_screen
+  fi
+
+  # register custom function for vim-mode
+  zle -N zle-keymap-select prompt_purer_vim_mode
+
+  # show username@host if logged in through SSH
+  [[ "$SSH_CONNECTION" != '' ]] && prompt_pure_username=' %F{242}%n@%m%f'
+
+  # show username@host if root, with username in white
+  [[ $UID -eq 0 ]] && prompt_pure_username=' %F{white}%n%f%F{242}@%m%f'
+
+  # create prompt
+  prompt_pure_preprompt_render 'precmd'
+}
+
+prompt_pure_setup "$@"