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|
# Frontend to controlling prompt
prompt() {
local -i ret=$?
local -i colors=$(tput colors 2>/dev/null)
local color reset branch state info url root
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)
if $(git rev-parse --is-inside-git-dir 2>/dev/null); then
return 1
fi
if ! $(git rev-parse --is-inside-work-tree 2>/dev/null); then
return 1
fi
git status &>/dev/null
branch=$(git symbolic-ref --quiet HEAD 2>/dev/null) \
|| branch=$(git rev-parse --short HEAD 2>/dev/null) \
|| branch='unknown'
branch=${branch##*/}
if ! git diff --quiet --ignore-submodules --cached; then
state=${state}+
fi
if ! git diff-files --quiet --ignore-submodules --; then
state=${state}!
fi
if $(git rev-parse --verify refs/stash &>/dev/null); then
state=${state}^
fi
if [ -n "$(git ls-files --others --exclude-standard)" ]; then
state=${state}?
fi
printf '(git:%s)' "${branch:-unknown}${state}"
;;
# Mercurial prompt function
hg)
if ! branch="$(hg branch 2>/dev/null)"; then
return 1
fi
if [[ -n "$(hg status 2>/dev/null)" ]]; then
state="!"
fi
printf '(hg:%s)' "${branch:-unknown}${state}"
;;
# Subversion prompt function
svn)
if ! svn info &>/dev/null; then
return 1
fi
info="$(svn info 2>/dev/null)"
url="$(awk -F': ' '$1 == "URL" {print $2}' \
<<<"$info")"
root="$(awk -F': ' '$1 == "Repository Root" {print $2}' \
<<<"$info")"
branch=${url/$root}
branch=${branch#/}
branch=${branch#branches/}
branch=${branch%%/*}
if [[ -n "$(svn status 2>/dev/null)" ]]; then
state="!"
fi
printf '(svn:%s)' "${branch:-unknown}${state}"
;;
# VCS wrapper prompt function
vcs)
prompt git || prompt svn || prompt hg
;;
# Return status prompt function
return)
if [[ $ret -ne 0 ]]; then
printf '<%d>' ${ret}
fi
;;
# Job count prompt function
jobs)
if [[ -n "$(jobs)" ]]; then
printf '{%d}' $(jobs | sed -n '$=')
fi
;;
esac
}
# Start with full-fledged prompt
prompt on
|
