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|
# Frontend to controlling prompt
function prompt {
local colors=$(tput colors 2>/dev/null)
local color reset branch head state url root ret
if [[ $colors -ge 256 ]]; then
color='\[\e[38;5;10m\]'
reset='\[\e[0m\]'
elif [[ $colors -ge 8 ]]; then
color='\[\e[1;32m\]'
reset='\[\e[0m\]'
fi
case "$1" in
# Turn complex coloured prompt on
on)
PROMPT_COMMAND='history -a'
PS1='\[\a\][\u@\h:\w]$(prompt return)$(prompt vcs)$(prompt jobs)\$'
PS1="${color}${PS1}${reset} "
;;
# Revert to simple inexpensive prompt
off)
PROMPT_COMMAND=
PS1='\[\a\]\$ '
;;
# Git prompt function
git)
git branch &>/dev/null || return 1
head="$(git symbolic-ref HEAD 2>/dev/null)"
branch="${head##*/}"
[[ -n "$(git status 2>/dev/null | \
grep -F 'nothing to commit')" ]] || state="!"
printf '(git:%s)' "${branch:-unknown}${state}"
;;
# Mercurial prompt function
hg)
hg branch &>/dev/null || return 1
branch="$(hg branch 2>/dev/null)"
[[ -n "$(hg status 2>/dev/null)" ]] && state="!"
printf '(hg:%s)' "${branch:-unknown}${state}"
;;
# Subversion prompt function
svn)
svn info &>/dev/null || return 1
url="$(svn info 2>/dev/null | \
awk -F': ' '$1 == "URL" {print $2}')"
root="$(svn info 2>/dev/null | \
awk -F': ' '$1 == "Repository Root" {print $2}')"
branch=${url/$root}
branch=${branch#/}
branch=${branch#branches/}
branch=${branch%%/*}
[[ -n "$(svn status 2>/dev/null)" ]] && state="!"
printf '(svn:%s)' "${branch:-unknown}${state}"
;;
# VCS wrapper prompt function
vcs)
prompt git || prompt svn || prompt hg
;;
# Return status prompt function
return)
ret=$?
[[ $ret -ne 0 ]] && printf '<%d>' ${ret}
;;
# Job count prompt function
jobs)
[[ -n "$(jobs)" ]] && printf '{%d}' $(jobs | sed -n '$=')
;;
esac
}
# Start with full-fledged prompt
prompt on
|
