#!/bin/bash
# vim ft:sh

function git_tag {
    git describe --tags --abbrev=0 2>/dev/null | head -n 1
}

function git_commit_count {
    local tag=$1
    if [ -n "$tag" ]; then
        git rev-list "$tag"..HEAD --count 2>/dev/null || printf 0
    else
        git rev-list HEAD --count 2>/dev/null || printf 0
    fi
}

function git_version {
    tag="$(git_tag)"
    tag_version="$(echo "$tag" | sed -E -n "s/^v?([^-]+)/\1/p")"
    if [ -z "$tag_version" ]; then
        tag_version=0
    fi
    commit_count="$(git_commit_count "$tag")"
    if [ "$commit_count" -eq 0 ]; then
        output "$tag_version"
    else
        shortcommit="$(git rev-parse --short HEAD)"
        output "$tag_version^${commit_count}.git${shortcommit}"
    fi
}

function git_release {
    output "1"
}

function git_dir_release {
    git_release "$@"
}