X-Git-Url: https://git.madduck.net/etc/zsh.git/blobdiff_plain/f9a91601a570cea7ff13a5f9c1894a8f63fbbae6..e7b57bc5c5383a6eac9b7d8d0af4f1c63723b948:/.zsh/themes/prompt_madduck_setup

diff --git a/.zsh/themes/prompt_madduck_setup b/.zsh/themes/prompt_madduck_setup
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+#
+# My zsh prompt theme
+#
+# Copyright © 1994–2017 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+# Source repository: http://git.madduck.net/v/etc/zsh.git
+#
+# vcs stuff shamelessly based on http://glandium.org/blog/?p=170
+#
+
+zstyle -m :madduck:prompt:default path-maxlen '*' \
+  || zstyle :madduck:prompt:default path-maxlen 25
+zstyle -m :madduck:prompt:default path-minlen '*' \
+  || zstyle :madduck:prompt:default path-minlen 10
+
+__on_networkfs()
+{
+  emulate -L zsh
+  case $(df -T . | sed -rne '$s,^[^[:space:]]+[[:space:]]+([^[:space:]]+).*,\1,p') in
+    (cifs|nfs) return 0;;
+  esac
+  return 1
+}
+
+__git_get_reporoot()
+{
+  emulate -L zsh
+  # return the full path to the root of the current git repository
+  [ -d "$GIT_DIR" ] && echo "$GIT_DIR" && return 0
+  local dir; dir="$PWD/$(git rev-parse --show-cdup)"
+  # do not use --show-toplevel because it resolves symlinks
+  echo $dir:a
+}
+
+__git_get_branch()
+{
+  emulate -L zsh
+  # use oh-my-zsh prompt info function if it exists
+  $(command -v git_prompt_info) && return
+
+  # return the name of the git branch we're on
+  local ref gitdir
+  gitdir="$(git rev-parse --git-dir)"
+  ref=$(git --git-dir="$gitdir" symbolic-ref -q HEAD 2>/dev/null \
+     || git --git-dir="$gitdir" name-rev --name-only HEAD 2>/dev/null) || return 1
+  echo "${ref#refs/heads/}"
+}
+
+__git_print_preprompt()
+{
+  emulate -L zsh
+  [ "$(git config --get core.bare)" = false ] || return
+  __on_networkfs && return
+
+  local COLUMNS=${COLUMNS:-80}
+  local LINES=${LINES:-25}
+
+  function output() {
+    emulate -L zsh
+    local title="$@"
+    local output=(${(f)"$(cat)"})
+
+    [[ ${#output} -ge 1 ]] || return
+
+    local statl="$(echo ${output[-1]} | sed -re 's@^\s*([0-9]+)[^,]+(, ([0-9]+) [^(]+\(([-+])\))(, ([0-9]+) [^(]+\(([-+])\))?@\1/\4\3/\7\6@')"
+
+    if [[ ${output[-2]## } = '...' ]]; then
+      print "${title} (${statl%/}, abbrev.):"
+      print "${(F)output[1,-3]}"
+      print " …"
+    else
+      print "${title} (${statl%/}):"
+      print "${(F)output[1,-2]}"
+    fi
+  }
+
+  function gitdiffstat() {
+    emulate -L zsh
+    local common_options="--stat=$((COLUMNS/2-1)),$((COLUMNS/4-2)),$(($LINES/3)) --relative"
+    eval git diff $common_options "$@" 2>/dev/null
+  }
+
+  local cached=(${(f)"$(gitdiffstat --cached | output cached)"})
+  local changed=(${(f)"$(gitdiffstat | output changed)"})
+
+  local max=${#changed}
+  [[ $max -lt ${#cached} ]] && max=${#cached}
+
+  ((max == 0)) && return
+
+  local width=$(((COLUMNS-3)/2))
+
+  if (( ${#cached} > 0 && ${#changed} > 0 )); then
+    local i
+    for (( i=1 ; i <= max ; i++ )) do
+      printf "%-${width}s │ %-${width}s\n" "${cached[$i]}" "${changed[$i]}"
+    done
+  else
+    print ${(F)cached}${(F)changed}
+  fi
+}
+
+__hg_get_reporoot()
+{
+  emulate -L zsh
+  hg root
+}
+
+__hg_get_branch()
+{
+  emulate -L zsh
+  echo "hg:$(hg branch)"
+}
+
+__bzr_get_reporoot()
+{
+  emulate -L zsh
+  local reporoot
+  reporoot="$(bzr info | sed -rne 's, *branch root: ,,p')"
+  case "$reporoot" in
+    .) echo "$PWD";;
+    *) echo "$reporoot";;
+  esac
+}
+
+__bzr_get_branch()
+{
+  emulate -L zsh
+  local branch revno
+  bzr version-info | while read i j; do
+      case "$i" in
+        revno:) revno="$j";;
+        branch-nick:) branch="$j";;
+      esac
+    done
+  echo "bzr:${branch}@$revno"
+}
+
+__vcs_get_repo_type()
+{
+  emulate -L zsh
+  # return the type of the closest repository in the path hierarchy
+  local dir
+  while true; do
+    [ -d ${dir}.git ] && echo git && break
+    [ -d "$GIT_DIR" ] && echo git && break
+    [ -d ${dir}.bzr ] && echo bzr && break
+    [ -d ${dir}.hg ] && echo hg && break
+    [ "$(readlink -f ${dir:-.})" = / ] && echo NONE && break
+    dir="../$dir"
+  done
+}
+
+__get_prompt_path_len() {
+  emulate -L zsh
+  local result
+  zstyle -s ":madduck:prompt:$PWD" path-${1}len result
+  [ -z "$result" ] && zstyle -s ':madduck:prompt:default' path-${1}len result
+  echo $result
+}
+
+__vcs_get_prompt_path_components()
+{
+  emulate -L zsh
+  # return formatted path components (prefix branch postfix) given
+  # the repository root and the branch.
+
+  local MAXLEN MINLEN
+  MAXLEN=$(__get_prompt_path_len max)
+  MINLEN=$(__get_prompt_path_len min)
+
+  # shortcut: if there are no arguments, return a default prompt
+  if [ -z "${1:-}" ]; then
+    pwdnamed="${(%):-%${MAXLEN}<…<%~%<<}"
+    echo "$pwdnamed"
+    return
+  fi
+
+  local reporoot branch
+  reporoot="${1%%/}"
+  branch="$2"
+
+  # replace named directories in the PWD, we need thi for the proper component
+  # count later
+  local pwdnamed
+  pwdnamed="${(%):-%~}"
+
+  # store paths in arrays for component count calculation
+  typeset -la apwd apwdnamed areporoot
+  apwd=(${(s:/:)PWD})
+  apwdnamed=(${(s:/:)pwdnamed})
+  areporoot=(${(s:/:)reporoot})
+
+  # get the number of leading and trailing path components. Since we're using
+  # %~ later and then /home/madduck suddenly becomes ~, which is 1, not
+  # 2 components, we calculate the leading component count by using the named
+  # path and the number of post components
+  local precomps postcomps
+  postcomps=$(($#apwd - $#areporoot))
+  precomps=$(($#apwdnamed - $postcomps))
+
+  local postfix
+  (( $postcomps > 0 )) && postfix="${(%):-%${postcomps}~}"
+
+  # we don't want the prompt to get too long, so keep the total prompt length
+  # under $MAXLEN, but ensure that the prefix is not shorter
+  # than $MINLEN, no matter what
+  local prelen minlen prefix
+  prelen=$((${MAXLEN} - $#branch - $#postfix))
+  minlen=${MINLEN}
+  (( $prelen < $minlen )) && prelen=$minlen
+  prefix="${(%):-%${prelen}<…<%-${precomps}~%<<}"
+
+  echo "'$prefix'" "'$branch'" "'$postfix'"
+}
+
+__vcs_set_prompt_variables()
+{
+  emulate -L zsh
+  # set psvar[1..3] depending on repo type, or just psvar[1] if no repo found
+  local reporoot branch repotype
+  repotype="${1:-$(__vcs_get_repo_type)}"
+
+  case "$repotype" in
+    git)
+      reporoot="$(__git_get_reporoot)" ||
+        { zerror "could not determine git repository root"; return 1 }
+      branch="$(__git_get_branch)" ||
+        { zerror "could not determine git branch"; return 1 }
+      if [ -n "$VCSH_REPO_NAME" ]; then
+        # if vcsh is used to get a subshell, then the repo root is the home
+        # directory, but we want to indicate the vcsh context too:
+        eval set -- $(__vcs_get_prompt_path_components "$HOME" "$branch")
+        set -- "vcsh:$VCSH_REPO_NAME" "$2" "$1${3:+/$3}"
+      else
+        eval set -- $(__vcs_get_prompt_path_components "$reporoot" "$branch")
+        if [ -d "$GIT_DIR" ]; then
+          # poor man's replace until I find out how to do named dirs properly
+          # here:
+          local _D="${GIT_DIR/$HOME/~}"
+          set -- "$_D" "$2" "${${1#$_D}%/}"
+        fi
+      fi
+      ;;
+    hg)
+      reporoot="$(__hg_get_reporoot)" ||
+        { zerror "could not determine hg repository root"; return 1 }
+      branch="$(__hg_get_branch)" ||
+        { zerror "could not determine hg branch"; return 1 }
+      eval set -- $(__vcs_get_prompt_path_components "$reporoot" "$branch")
+      ;;
+    bzr)
+      reporoot="$(__bzr_get_reporoot)" ||
+        { zerror "could not determine bzr repository root"; return 1 }
+      branch="$(__bzr_get_branch)" ||
+        { zerror "could not determine bzr branch"; return 1 }
+      eval set -- $(__vcs_get_prompt_path_components "$reporoot" "$branch")
+      ;;
+    *)
+      case "$repotype" in
+        NONE) :;;
+        *) warn "$repotype repositories not (yet) supported in the prompt";;
+      esac
+      local MAXLEN MINLEN
+      MAXLEN=$(__get_prompt_path_len max)
+      local p="%${MAXLEN}<…<%~%<<"
+      #TODO find a better way so we don't have to nuke $psvar, but since the
+      #     %(nv.true.false) check for prompts checks element count, not
+      #     content, that's all we get for now
+      psvar=("${(%)p}")
+      return
+  esac
+
+  psvar[1,3]=($1 $2 $3)
+}
+
+__vcs_print_preprompt()
+{
+  emulate -L zsh
+  local repotype="${1:-$(__vcs_get_repo_type)}"
+
+  case "$repotype" in
+    git)
+      __git_print_preprompt
+      ;;
+  esac
+}
+
+if ! is_root; then
+  # too dangerous to be run as root
+  autoload -U add-zsh-hook
+
+  _update_vcs_prompt_vars_if_vcs_ran() {
+    local vcs="$(__vcs_get_repo_type)"
+    case "$(history $(($HISTCMD - 1)))" in
+      # $vcs appeared in last command, so be sure to update
+      *${vcs}*) __vcs_set_prompt_variables "$vcs"
+    esac
+  }
+  add-zsh-hook precmd _update_vcs_prompt_vars_if_vcs_ran
+
+  _update_vcs_prompt_vars() {
+    __vcs_set_prompt_variables
+  }
+  add-zsh-hook chpwd _update_vcs_prompt_vars
+
+  _print_preprompt() {
+    [[ $? -eq 0 ]] && __vcs_print_preprompt
+  }
+  add-zsh-hook precmd _print_preprompt
+
+  # call it once
+  _update_vcs_prompt_vars
+fi
+
+function make_ps1() {
+  # start with '+' if in a subshell
+  echo -n '%(2L.+.)'
+
+  # the machine name, bold or underlined based on non-root/root
+  local ps1_hl=B
+  is_root && ps1_hl=U
+  echo -n "%${ps1_hl:=B}%m%${(L)ps1_hl}"
+
+  # if we're in a Debian chroot, make that stand out
+  echo -n "${DEBIAN_CHROOT:+/%S$DEBIAN_CHROOT%s}"
+
+  # we end this with a :
+  echo -n :
+
+  # now comes the working directory, composed from parts in $psvar,
+  # which is managed by $ZDOTDIR/zshrc/06-vcsprompt
+  echo -n '%1v%(2v.|%B%2v%b|.)%(3v.%3v.)'
+
+  # and we finish with #/% for root/non-root, and a space
+  echo -n '%# '
+  echo
+}
+PS1=$(make_ps1)
+unfunction make_ps1
+PS2="%{$fg[red]%}%_>%{$reset_color%}"
+
+function make_rps1() {
+  # First, a comment character and parens
+  echo -n '#('
+
+  # Next, if the returncode was non-zero, make it stand-out
+  # and include a trailing space
+  echo -n "%(0?..%{$fg[red]%}%S%?%s%{$reset_color%} )"
+
+  # If there are background jobs, print their number, followed by
+  # '@':
+  echo -n '%(1j.%j@.)'
+
+  # and then the terminal line we're using
+  echo -n '%l'
+
+  # this concludes the first part, but there's more
+  echo -n ') '
+
+  # the timestamp will finish it off:
+  echo -n '%D{%d %H:%M:%S.%.}'
+  echo
+}
+RPS1=$(make_rps1)
+unfunction make_rps1
+
+# vim:ft=zsh