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Performance improvement for large repos! (Avoid using "git status") #52

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Performance improvement for large repos! (Avoid using "git status") #52

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c140521
Performance improvement for large repos!
simonsthings May 4, 2017
f3687c9
Added function find_git_untracked() to show that untracked files are …
simonsthings May 4, 2017
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43 changes: 38 additions & 5 deletions prompt.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -11,22 +11,55 @@ find_git_branch() {
fi
}

find_git_dirty() {
local status=$(git status --porcelain 2> /dev/null)
if [[ "$status" != "" ]]; then
git_dirty='*'
find_git_changed() {
local branch
if branch=$(git rev-parse --abbrev-ref HEAD 2> /dev/null); then
#local status=$(git status --porcelain 2> /dev/null) # very slow for large repos!
#local has_staged_changes=$(git diff-index --quiet --cached HEAD 2> /dev/null)
#local has_stageable_files=$(git diff-files --quiet 2> /dev/null)
local status=$(git diff-index --quiet HEAD 2> /dev/null ; echo $?)
if [[ "$status" == "0" ]]; then
git_changed=''
elif [[ "$status" == "1" ]]; then
git_changed='c'
elif [[ "$status" == "128" ]]; then
git_changed=' no_worktree'
else
git_changed=" err_$status" # to show if anything else went wrong.
fi
else
git_changed=''
fi
}

find_git_untracked() {
git_untracked_num=$( echo $(git ls-files --other --directory --exclude-standard 2> /dev/null | wc -l) )
if (( "$git_untracked_num" > 0 )); then
git_untracked='u'
else
git_untracked=''
git_untracked_num=''
fi
}

find_git_dirty() {
if [[ "$git_changed" == "" ]] && [[ "$git_untracked" == "" ]]; then
git_dirty=''
else
git_dirty='*'
fi
}

PROMPT_COMMAND="find_git_branch; find_git_dirty; $PROMPT_COMMAND"
PROMPT_COMMAND="find_git_branch; find_git_changed; find_git_untracked; find_git_dirty; $PROMPT_COMMAND"

# Default Git enabled prompt with dirty state
# export PS1="\u@\h \w \[$txtcyn\]\$git_branch\[$txtred\]\$git_dirty\[$txtrst\]\$ "

# Another variant:
# export PS1="\[$bldgrn\]\u@\h\[$txtrst\] \w \[$bldylw\]\$git_branch\[$txtcyn\]\$git_dirty\[$txtrst\]\$ "

# A third variant:
# export PS1="${debian_chroot:+($debian_chroot)}\[\033[00;30m\][\D{%F %H:%M}] \[\033[00;32m\]\nyou are here: \w \[$txtcyn\]\$git_branch\[$txtred\]\$git_changed\$git_untracked_bool\$git_dirty\[$txtrst\]\n\[\033[01;32m\]\u\[\033[00;37m\]@\[\033[00;35m\]\h\[\033[00m\]\[\033[00m\]\$ "

# Default Git enabled root prompt (for use with "sudo -s")
# export SUDO_PS1="\[$bakred\]\u@\h\[$txtrst\] \w\$ "