status-mobile/nix/deps/clojure/generate.sh

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#!/usr/bin/env bash
set -e
GIT_ROOT=$(cd "${BASH_SOURCE%/*}" && git rev-parse --show-toplevel)
source "${GIT_ROOT}/scripts/colors.sh"
if [[ -z "${IN_NIX_SHELL}" ]]; then
echo "Remember to call 'make shell'!"
exit 1
fi
CLASSPATH_FILE="${GIT_ROOT}/nix/deps/clojure/deps.list"
JSON_DEPS_FILE="${GIT_ROOT}/nix/deps/clojure/deps.json"
MAVEN_CACHE_PATH="${HOME}/.m2/repository"
declare -A REPOS=(
[central]="https://repo1.maven.org/maven2"
[clojars]="https://repo.clojars.org"
)
function gen_deps_list() {
# split into separate lines
CLASSPATH_LINES=$(yarn shadow-cljs classpath --force-spawn | tr ':' '\n')
# remove unnecessary lines
CLASSPATH_LINES=$(echo "${CLASSPATH_LINES}" | grep -vE '^(\$|yarn|Done|shadow-cljs|src|test)')
# remove local home path
CLASSPATH_LINES=$(echo "${CLASSPATH_LINES}" | sed "s#${MAVEN_CACHE_PATH}/##")
# print cleaned up entries from classpath
echo "${CLASSPATH_LINES}" | sort | uniq
}
function get_repo_for_dir() {
# This file has different name depending on Maven version
if [[ -f "${1}/_remote.repositories" ]]; then
REPO_FILE="${1}/_remote.repositories"
elif [[ -f "${1}/_maven.repositories" ]]; then
REPO_FILE="${1}/_maven.repositories"
else
echo -e "${RED}Cannot find Maven repo file for:${RST} ${1}" >&2
exit 1
fi
grep -oP '.*>\K\w+' "${REPO_FILE}" | uniq
}
function get_nix_sha() {
nix hash-file --base32 --type sha256 "$1" 2> /dev/null
}
function nix_entry_from_jar() {
JAR_REL_PATH="${1}"
JAR_REL_NAME="${JAR_REL_PATH%.jar}"
JAR_PATH="${MAVEN_CACHE_PATH}/${JAR_REL_PATH}"
JAR_NAME=$(basename "${JAR_PATH}")
JAR_DIR=$(dirname "${JAR_PATH}")
REPO_NAME=$(get_repo_for_dir "${JAR_DIR}")
REPO_URL=${REPOS[${REPO_NAME}]}
JAR_SHA1=$(cat "${JAR_PATH}.sha1")
JAR_SHA256=$(get_nix_sha "${JAR_PATH}")
# Format into a Nix attrset entry
echo -n "
{
\"path\": \"${JAR_REL_NAME}\",
\"host\": \"${REPO_URL}\",
\"jar\": {
\"sha1\": \"${JAR_SHA1}\",
\"sha256\": \"${JAR_SHA256}\"
}
}"
}
# generate the deps.list file with relative paths
gen_deps_list > "${CLASSPATH_FILE}"
echo "Saved Clojure deps list to: ${CLASSPATH_FILE}" >&2
# add the header which defines repo URLs
echo -en "[" > "${JSON_DEPS_FILE}"
# for each dependency generate an attrset with metadata
DEPS=$(cat "${CLASSPATH_FILE}")
LAST=$(tail -n1 "${CLASSPATH_FILE}")
for DEP in ${DEPS}; do
nix_entry_from_jar "${DEP}" >> "${JSON_DEPS_FILE}"
# JSON is stupid and requires no comma on last element
[[ "${DEP}" != "${LAST}" ]] && echo "," >> "${JSON_DEPS_FILE}"
done
# close the attrset
echo -e "\n]" >> "${JSON_DEPS_FILE}"
echo "Generated Clojure deps for Nix: ${JSON_DEPS_FILE}" >&2