#!/bin/sh
# script/version: output the version string to bake into the binary.
# Our own extension to scripts-to-rule-them-all. The Makefile's LDFLAGS
# call this rather than carrying a hardcoded constant, which is what used
# to make every local build claim to be 1.0.0-rc.1 regardless of git
# state. script/docker and script/cibuild pass its output to the image
# build, which otherwise runs the same `git describe` itself.
#
# The version is `git describe --tags --always --dirty`: the tag on a
# tagged commit, tag-N-gHASH on a commit after one, the short commit
# when no tag is reachable, each with a "-dirty" suffix when tracked
# files have uncommitted changes. Untracked files are ignored: a stray
# scratch file does not change what was compiled. Outside a git checkout
# (release tarball, `go install`), or in one with no commits, it is
# "dev".
#
# Nothing here ever invents a version number.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"

main() {
    cd "$ROOT"
    version="$(git describe --tags --always --dirty 2>/dev/null || true)"
    echo "${version:-dev}"
}

main "$@"