liskin-dotfiles-release

#!/usr/bin/env bash

set -eu -o pipefail
shopt -s lastpipe

# shellcheck source-path=..
. "$HOME"/bin/.o

function release-tree {
	: "${1:?name}"
	: "${2:?version}"

	ref="refs/heads/standalone/$1"
	tag="${1}-${2}"

	ref_head="$(git rev-parse --verify --quiet "$ref" || :)"

	tree="$(git mktree)"
	commit="$(o git commit-tree ${ref_head:+-p "$ref_head"} -p @ "$tree" -m "$tag" </dev/tty)"
	o git update-ref "$ref" "$commit"
	o git tag -s "$tag" "$commit" </dev/tty
}

function mktree-add-from-head {
	: "${1:?filename}"
	git ls-tree --full-tree @:"$(dirname "$1" | grep -vxF .)" "$(basename "$1")"
}

function mktree-add-file {
	: "${1:?filename}"
	local blob; blob=$(git hash-object -w "$1")
	printf "100${2:-644} blob %s\t%s\n" "$blob" "$(basename "$1")"
}

function mktree-add-symlink {
	: "${1:?target}"
	: "${2:?linkname}"
	local blob; blob=$(git hash-object -w --stdin <<<"$1")
	printf "120000 blob %s\t%s\n" "$blob" "$2"
}

function mktree-add-subdir {
	: "${1:?subdir}"
	local tree; tree=$(git mktree)
	printf "040000 tree %s\t%s\n" "$tree" "$1"
}

function release-xrandr-smart {
	: "${1:?version}"

	make -C .local/share/man man1/xrandr-smart.1

	{
		mktree-add-from-head LICENSE
		mktree-add-from-head bin/xrandr-smart
		mktree-add-from-head .local/share/man/xrandr-smart.1.md
		mktree-add-file .local/share/man/man1/xrandr-smart.1
		mktree-add-symlink xrandr-smart.1.md README.md
	} | release-tree xrandr-smart "$1"
}

toplevel="$(git rev-parse --show-toplevel 2>/dev/null)"
o cd "$toplevel"

o "$@"