split-docs

#!/usr/bin/env bash

# This script is a utility script for use by LukeShu during the
# migration to per-product/version subtrees.  It isn't something that
# is meant to be run during normal work.  If you would like to run
# this script, and therefore would like to be involved in that
# migration, then you should probably have a chat involving Luke about
# the migration plan.

set -euEx

PUSH_BRANCH=${PUSH_BRANCH:-${USER}/from-website-$(date +%Y-%m-%d)}

for dir in $(printf '%s\n' docs/*/* | sort --version-sort --reverse)
do
	# Ignore non-directories (including symlinks-to-directories).
	if test -h "$dir" || ! test -d "$dir"
	then
		continue
	fi

	# Extract the product-name from the dir-name.
	product=${dir#docs/}; product=${product%%/*}

	# Extract the branch-version from the dir-name.
	case "${dir#docs/*/}" in
		latest|pre-release) version=master;;
		*) version="v${dir#docs/*/}";;
	esac

	time git subtree split --prefix="$dir" \
	    --rejoin --squash \
	    --branch="${PUSH_BRANCH}/products/${product}/${version}"
done