154 lines
3.5 KiB
Bash
Executable File
154 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/zsh
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function main()
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{
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is_in_git_repository || return 1
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parse_git_status
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local modified="${STATUS[1]}"
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local staged="${STATUS[2]}"
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local deleted="${STATUS[3]}"
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local untracked="${STATUS[4]}"
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unset STATUS
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git_grab_current_branch
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local branch="$REPLY"
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git_grab_remote_branch
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local remote="$REPLY"
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[[ ! -z "$remote" ]] \
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&& git_local_remote_diffs "$branch" "$remote" \
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&& local commit_diffs="$REPLY"
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git_determine_color $modified $staged $deleted $untracked
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local color="$REPLY"
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(( modified > 0 )) \
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&& modified="!$modified "
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(( staged > 0 )) \
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&& staged="+$staged "
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(( deleted > 0 )) \
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&& deleted="-$deleted "
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(( untracked > 0 )) \
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&& untracked="?$untracked"
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local output="${color}"
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output+=" $branch"
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output+="$commit_diffs"
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output+="$modified"
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output+="$staged"
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output+="$deleted"
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output+="$untracked"
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output+=$'\e[0m'
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sed 's/[ ]+$//' <<<"$output" # remove trailing whitespace
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unset REPLY
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}
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###
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# Check if we're in a git repository
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# Arguments: none
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# Returns: 0 if in a git repo, 1 otherwise
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###
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function is_in_git_repository()
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{
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git rev-parse --git-dir &>/dev/null || return 1
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}
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###
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# Return current branch we're on
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# Arguments: none
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###
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function git_grab_current_branch()
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{
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typeset -g REPLY="$(git branch --show-current)"
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}
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###
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# Return remote branch that the local one is tracking
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# Arguemnts: none
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###
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function git_grab_remote_branch()
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{
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local symbolic_ref="$(git symbolic-ref -q HEAD)"
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typeset -g REPLY="$(git for-each-ref --format='%(upstream:short)' $symbolic_ref)"
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}
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###
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# Find how many things have changed since last git commit
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# Arguments: none
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###
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function parse_git_status()
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{
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git status --porcelain=v1 | while IFS= read -r status_line; do
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case "$status_line" in
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' M '*)
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((modified++))
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;;
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'A '*|'M '*)
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((staged++))
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;;
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' D '*)
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((deleted++))
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;;
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'?? '*)
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((untracked++))
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;;
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'MM '*)
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((staged++))
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((modified++))
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;;
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esac
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done
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typeset -g STATUS=("$modified" "$staged" "$deleted" "$untracked")
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return 0
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}
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###
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# Look at how many commits a local branch is ahead/behind of remote branch
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# Arguments: $1 local branch
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# $2 remote branch
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###
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function git_local_remote_diffs()
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{
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local local_branch="$1"
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local remote_branch="$2"
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local differences="$(git rev-list --left-right --count $local_branch...$remote_branch)"
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local commits_ahead=$(echo -n "$differences" | awk '{print $1}')
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local commits_behind=$(echo -n "$differences" | awk '{print $2}')
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local ahead="" behind=""
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(( $commits_ahead > 0 )) \
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&& ahead=" ↑$commits_ahead"
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(( $commits_behind > 0 )) \
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&& behind=" ↓$commits_behind "
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typeset -g REPLY="$ahead $behind"
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return 0
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}
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###
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# If there is anything that changed from the past commit, return yelllow color.
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# Otherwise, green.
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# Arguments: list of how many things changed
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###
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function git_determine_color()
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{
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local green=$'\e[93m'
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local yellow=$'\e[92m'
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for i in "$@"; do
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if (( $i > 0 )); then
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typeset -g REPLY="$green"
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return 0
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fi
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done
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typeset -g REPLY="$yellow"
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return 0
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}
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main
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