bash_prompt: Run `ls-files` from the root of the repo

[dotfiles.git] / admin / prog / bash_prompt

diff --git a/admin/prog/bash_prompt b/admin/prog/bash_prompt
index 315543d1d7507fee16757060f63ee7084ba36503..0436df4a951bac7043a6437255c0fcd4ba5036d8 100644 (file)
--- a/admin/prog/bash_prompt
+++ b/admin/prog/bash_prompt
@@ -1,3 +1,16 @@
+cgmem_which_prompt() {
+   local _cgmem_which
+   _cgmem_which="`cgmem_which 2>/dev/null`"
+   if [ -n "$_cgmem_which" ]; then
+      _cgmem_which=" $_cgmem_which"
+   fi
+   echo "$_cgmem_which"
+}
+
+# Cut directories to 20% of the terminal width; add space for 3 dots
+_DIR_LENGTH=`awk "END { print int(0.2 * ${COLUMNS:-80}) }" </dev/null`
+_DIR_LENGTH_DOTS=`expr $_DIR_LENGTH + 3`
+
 short_curdir() {
    if [ "$PWD" = / ]; then
       echo /
@@ -9,8 +22,125 @@ short_curdir() {
    fi
    local _short_curdir
    _short_curdir="${PWD##*/}" # cut all directories, get base name
-   if [ "${#_short_curdir}" -gt 18 ]; then
-      _short_curdir="${_short_curdir::15}..." # cut long string
+   if [ "${#_short_curdir}" -gt $_DIR_LENGTH_DOTS ]; then
+      _short_curdir="${_short_curdir::$_DIR_LENGTH}..." # cut long string
    fi
    echo "${_short_curdir}"
 }
+
+# bash_prompt; adapted from
+# https://github.com/necolas/dotfiles/blob/master/shell/bash_prompt and
+# https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh
+
+prompt_git() {
+    local s=""
+    local branchName=""
+
+    # check if the current directory is in a git repository
+    if git rev-parse --is-inside-work-tree &>/dev/null; then
+
+        # check if the current directory is in .git before running git checks
+        if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == "false" ]; then
+
+            # ensure index is up to date
+            #git update-index --really-refresh -q &>/dev/null
+
+            # check for unstaged changes
+            if [ -n "$(git ls-files --modified :/)" ]; then
+                s="$s*";
+            fi
+
+            # check for uncommitted changes in the index
+            if ! $(git diff --quiet --ignore-submodules --cached); then
+                s="$s+";
+            fi
+
+            # check for stashed files
+            if $(git rev-parse --verify refs/stash &>/dev/null); then
+                s="$s$";
+            fi
+
+            # check for untracked files
+            if [ -n "$(git ls-files --others --exclude-standard :/)" ]; then
+                s="$s%";
+            fi
+
+        fi
+
+        # get the short symbolic ref
+        # if HEAD isn't a symbolic ref, get the short SHA
+        # otherwise, just give up
+        branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
+                      git rev-parse --short HEAD 2> /dev/null || \
+                      printf "(unknown)")"
+
+        up=`git rev-parse --abbrev-ref @{u} 2>/dev/null`
+        if [ -n "$up" -a "$up" != "@{u}" ]; then
+            local left right
+            set -- `git rev-list --count --left-right @{u}...HEAD`
+            left=$1
+            right=$2
+            if [ "$left" -gt 0 ]; then
+                s="$s-$left"
+            fi
+            if [ "$right" -gt 0 ]; then
+                s="$s+$right"
+            fi
+        fi
+
+        [ -n "$s" ] && s=" $s"
+        printf " (%s)" "$branchName$s"
+    fi
+}
+
+#if test -x /usr/bin/git >/dev/null 2>&1; then
+#   if [ "`type -t __git_ps1`" != function ]; then
+#      git_sh_prompt=`git --exec-path`/git-sh-prompt
+#      test -r $git_sh_prompt && . $git_sh_prompt || :
+#   fi
+#   if [ "`type -t __git_ps1`" = function ]; then
+#      GIT_PS1_SHOWDIRTYSTATE=true
+#      GIT_PS1_SHOWSTASHSTATE=true
+#      GIT_PS1_SHOWUNTRACKEDFILES=true
+#      GIT_PS1_SHOWUPSTREAM=verbose
+#   fi
+#fi
+
+set_prompts() {
+      PS1=''
+      local _SHORT_PROMPT='[\A`cgmem_which_prompt`] \u@${HOSTNAME::5}:`short_curdir`'
+      # display the user, host and current working directory
+      # in the terminal title
+      case "$TERM" in
+         *rxvt*|screen*|*term*|vt100)
+            PS1="\033]0;${debian_chroot:+($debian_chroot)}\u@\h:\w\007" # Set xterm title/icon
+            case "$TERM" in
+               screen*)
+                  PS1="\033P${PS1}\033\\\\" # Set xterm title/icon under screen/tmux
+                  if [ -z "$MC_SID" ]; then
+                     PS1+="\033k${_SHORT_PROMPT}\033\\\\" # Set screen/tmux caption
+                  fi
+               ;;
+            esac
+         ;;
+
+         *)
+            PS1=""
+         ;;
+      esac
+
+   # This is for .screenrc: shelltitle "\$ |$SHELL"
+   #PS1+='\033k\033\\'
+
+   PS1="\[$PS1\]"
+   PS1+='${debian_chroot:+($debian_chroot)}'
+   PS1+=${_SHORT_PROMPT}
+   if test -x /usr/bin/git >/dev/null 2>&1; then
+      #if [ "`type -t __git_ps1`" = function ]; then
+      #   PS1+='$(__git_ps1)'
+      #else
+         PS1+='$(prompt_git)'
+      #fi
+   fi
+   PS1+=' $SHLVL\$ '
+}