installhelper.py

#
# Install helper code to manage inserting the correct version for the GUI
# Gets the version from the result of "lotus version"
# Converts to proper symver format so NPM doesn't complain
# Adds the version info to the package.json file
#
import json
import os
from os.path import exists
import subprocess
from pkg_resources import parse_version


#
# The following function is borrowed from
# https://github.com/inveniosoftware/invenio-assets/blob/maint-1.0/invenio_assets/npm.py
# Copyright (C) 2015-2018 CERN.
#
def make_semver(version_str: str) -> str:
    v = parse_version(version_str)
    major = v._version.release[0]
    try:
        minor = v._version.release[1]
    except IndexError:
        minor = 0
    try:
        patch = v._version.release[2]
    except IndexError:
        patch = 0

    prerelease = []
    if v._version.pre:
        prerelease.append("".join(str(x) for x in v._version.pre))
    if v._version.dev:
        prerelease.append("".join(str(x) for x in v._version.dev))

    local = v.local

    version = "{0}.{1}.{2}".format(major, minor, patch)

    if prerelease:
        version += "-{0}".format(".".join(prerelease))
    if local:
        version += "+{0}".format(local)

    return version


def get_lotus_version() -> str:
    version: str = "0.0"
    output = subprocess.run(["lotus", "version"], capture_output=True)
    if output.returncode == 0:
        version = str(output.stdout.strip(), "utf-8").splitlines()[-1]
    return make_semver(version)


def update_version(package_json_path: str):
    if not exists(package_json_path):
        return

    with open(package_json_path) as f:
        data = json.load(f)

    data["version"] = get_lotus_version()

    with open(package_json_path, "w") as w:
        json.dump(data, indent=4, fp=w)


if __name__ == "__main__":
    update_version(f"{os.path.dirname(__file__)}/lotus-blockchain-gui/package.json")
    update_version(f"{os.path.dirname(__file__)}/lotus-blockchain-gui/packages/gui/package.json")