admin/prog/bash_prompt

   1 cgmem_which_prompt() {
   2    local _cgmem_which
   3    _cgmem_which="`cgmem_which 2>/dev/null`"
   4    if [ -n "$_cgmem_which" ]; then
   5       echo "[$_cgmem_which] "
   6    fi
   7 }
   8
   9 short_curdir() {
  10    if [ "$PWD" = / ]; then
  11       echo /
  12       return
  13    fi
  14    if [ "$PWD" = "$HOME" ]; then
  15       echo "~"
  16       return
  17    fi
  18    local _short_curdir
  19    _short_curdir="${PWD##*/}" # cut all directories, get base name
  20    if [ "${#_short_curdir}" -gt 18 ]; then
  21       _short_curdir="${_short_curdir::15}..." # cut long string
  22    fi
  23    echo "${_short_curdir}"
  24 }
  25
  26 # bash_prompt; adapted from
  27 # https://github.com/necolas/dotfiles/blob/master/shell/bash_prompt and
  28 # https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh
  29
  30 prompt_git() {
  31     local s=""
  32     local branchName=""
  33
  34     # check if the current directory is in a git repository
  35     if git rev-parse --is-inside-work-tree &>/dev/null; then
  36
  37         # check if the current directory is in .git before running git checks
  38         if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == "false" ]; then
  39
  40             # ensure index is up to date
  41             #git update-index --really-refresh -q &>/dev/null
  42
  43             # check for unstaged changes
  44             if [ -n "$(git ls-files --modified)" ]; then
  45                 s="$s*";
  46             fi
  47
  48             # check for uncommitted changes in the index
  49             if ! $(git diff --quiet --ignore-submodules --cached); then
  50                 s="$s+";
  51             fi
  52
  53             # check for stashed files
  54             if $(git rev-parse --verify refs/stash &>/dev/null); then
  55                 s="$s$";
  56             fi
  57
  58             # check for untracked files
  59             if [ -n "$(git ls-files --others --exclude-standard)" ]; then
  60                 s="$s%";
  61             fi
  62
  63         fi
  64
  65         # get the short symbolic ref
  66         # if HEAD isn't a symbolic ref, get the short SHA
  67         # otherwise, just give up
  68         branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
  69                       git rev-parse --short HEAD 2> /dev/null || \
  70                       printf "(unknown)")"
  71
  72         [ -n "$s" ] && s=" $s"
  73         printf " (%s)" "$branchName$s"
  74     fi
  75 }
  76
  77 if test -x /usr/bin/git >/dev/null 2>&1; then
  78    if [ "`type -t __git_ps1`" != function ]; then
  79       git_sh_prompt=`git --exec-path`/git-sh-prompt
  80       test -r $git_sh_prompt && . $git_sh_prompt || :
  81    fi
  82    if [ "`type -t __git_ps1`" = function ]; then
  83       GIT_PS1_SHOWDIRTYSTATE=true
  84       GIT_PS1_SHOWSTASHSTATE=true
  85       GIT_PS1_SHOWUNTRACKEDFILES=true
  86       GIT_PS1_SHOWUPSTREAM=verbose
  87    fi
  88 fi
  89
  90 set_prompts() {
  91       OPS1=''
  92       # display the user, host and current working directory
  93       # in the terminal title
  94       case "$TERM" in
  95          *rxvt*|screen*|*term*|vt100)
  96             OPS1+="\[\033]0;${debian_chroot:+($debian_chroot)}\u@\h:\w\007\]"
  97             case "$TERM" in
  98                screen*)
  99                   OPS1+="\[\033k${debian_chroot:+($debian_chroot)}"
 100                   OPS1+="\u@\h:\w\033\\\\\]" # Set screen/tmux caption
 101                ;;
 102             esac
 103          ;;
 104
 105          *)
 106             OPS1=""
 107          ;;
 108       esac
 109
 110    OPS1+="${debian_chroot:+($debian_chroot)}"
 111    OPS1+="\`cgmem_which_prompt\`\u@\${HOSTNAME::5}:\`short_curdir\`"
 112    if test -x /usr/bin/git >/dev/null 2>&1; then
 113       if [ "`type -t __git_ps1`" = function ]; then
 114          OPS1+="\$(__git_ps1)"
 115       else
 116          OPS1+="\$(prompt_git)"
 117       fi
 118    fi
 119    # This is for .screenrc: shelltitle "\$ |$SHELL"
 120    #OPS1+="\[\033k\033\\\\\]"
 121    OPS1+=" \$SHLVL\\$ "
 122    export OPS1
 123 }