422 lines
13 KiB
JavaScript
422 lines
13 KiB
JavaScript
/*!
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* config.js - configuration parsing for bcoin
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* Copyright (c) 2016-2017, Christopher Jeffrey (MIT License).
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* https://github.com/bcoin-org/bcoin
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*/
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const bsert_1 = __importDefault(require("bsert"));
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const path_1 = __importDefault(require("path"));
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const fs_1 = __importDefault(require("fs"));
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const arg_1 = __importDefault(require("arg"));
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const object_path_1 = __importDefault(require("object-path"));
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const deep_to_flat_object_1 = __importDefault(require("deep-to-flat-object"));
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/**
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* Config Parser
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*/
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class Config {
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module;
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data = {};
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constructor(module) {
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(0, bsert_1.default)(typeof module === "string");
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(0, bsert_1.default)(module.length > 0);
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this.module = module;
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}
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inject(options) {
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for (const key of Object.keys(options)) {
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const value = options[key];
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switch (key) {
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case "env":
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case "argv":
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case "config":
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continue;
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}
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this.set(key, value);
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}
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}
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load() {
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const args = (0, arg_1.default)({}, { permissive: true });
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this.parseArg(args);
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}
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openDir(dir) {
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(0, bsert_1.default)(fs_1.default.existsSync(dir), `Directory ${dir} does not exist`);
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let files = fs_1.default
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.readdirSync(dir)
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.filter((item) => item.endsWith(".json"))
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.map((item) => path_1.default.join(dir, item));
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files.forEach(this.open.bind(this));
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}
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open(file) {
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let json;
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try {
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json = fs_1.default.readFileSync(file, "utf8");
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json = JSON.parse(json);
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}
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catch (e) {
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if (e.code === "ENOENT")
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return;
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throw new Error(`Error parsing file ${file}: ${e.message}`);
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}
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(0, bsert_1.default)(typeof json === "object", `Config file ${file} must be an object`);
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const settings = (0, deep_to_flat_object_1.default)(json);
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for (const key of Object.keys(settings)) {
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const value = settings[key];
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this.set(key, value);
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}
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}
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save(file, data) {
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(0, bsert_1.default)(typeof data === "object");
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(0, bsert_1.default)(!Array.isArray(data));
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const configDir = this.str("configdir");
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const fullPath = path_1.default.join(configDir, `${file}.json`);
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if (!fs_1.default.existsSync(configDir)) {
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fs_1.default.mkdirSync(configDir, { recursive: true });
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}
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fs_1.default.writeFileSync(fullPath, JSON.stringify(data));
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this.open(fullPath);
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}
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savePath(file, path) {
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this.save(file, this.get(path));
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}
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set(key, value) {
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(0, bsert_1.default)(typeof key === "string", "Key must be a string.");
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if (value == null) {
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return;
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}
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key = this.normalize(key);
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object_path_1.default.set(this.data, key, value);
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}
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has(key) {
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(0, bsert_1.default)(typeof key === "string", "Key must be a string.");
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key = key.replace(/-/g, "");
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key = key.toLowerCase();
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return object_path_1.default.has(this.data, key);
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}
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normalize(key, env = false) {
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(0, bsert_1.default)(typeof key === "string", "Key must be a string.");
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if (env) {
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key = key.replace(/__/g, ".");
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key = key.replace(/_/g, "");
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}
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else {
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key = key.replace(/-/g, "");
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}
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key = key.toLowerCase();
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return key;
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}
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get(key, fallback = null) {
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if (Array.isArray(key)) {
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const keys = key;
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for (const key of keys) {
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const value = this.get(key);
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if (value !== null) {
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return value;
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}
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}
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return fallback;
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}
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(0, bsert_1.default)(typeof key === "string", "Key must be a string.");
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key = this.normalize(key);
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return object_path_1.default.get(this.data, key, fallback);
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}
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typeOf(key) {
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const value = this.get(key);
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if (value === null) {
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return "null";
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}
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return typeof value;
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}
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str(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "string") {
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throw new Error(`${fmt(key)} must be a string.`);
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}
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return value;
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}
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int(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "string") {
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if (typeof value !== "number") {
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throw new Error(`${fmt(key)} must be an int.`);
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}
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if (!Number.isSafeInteger(value)) {
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throw new Error(`${fmt(key)} must be an int.`);
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}
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return value;
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}
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if (!/^\-?\d+$/.test(value)) {
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throw new Error(`${fmt(key)} must be an int.`);
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}
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const num = parseInt(value, 10);
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if (!Number.isSafeInteger(num)) {
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throw new Error(`${fmt(key)} must be an int.`);
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}
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return num;
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}
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uint(key, fallback = null) {
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const value = this.int(key);
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if (value === null) {
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return fallback;
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}
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if (value < 0) {
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throw new Error(`${fmt(key)} must be a uint.`);
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}
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return value;
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}
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float(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "string") {
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if (typeof value !== "number") {
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throw new Error(`${fmt(key)} must be a float.`);
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}
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if (!isFinite(value)) {
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throw new Error(`${fmt(key)} must be a float.`);
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}
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return value;
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}
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if (!/^\-?\d*(?:\.\d*)?$/.test(value)) {
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throw new Error(`${fmt(key)} must be a float.`);
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}
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if (!/\d/.test(value)) {
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throw new Error(`${fmt(key)} must be a float.`);
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}
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const num = parseFloat(value);
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if (!isFinite(num)) {
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throw new Error(`${fmt(key)} must be a float.`);
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}
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return num;
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}
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ufloat(key, fallback = null) {
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const value = this.float(key);
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if (value === null) {
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return fallback;
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}
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if (value < 0) {
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throw new Error(`${fmt(key)} must be a positive float.`);
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}
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return value;
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}
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fixed(key, exp, fallback = null) {
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const value = this.float(key);
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if (value === null) {
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return fallback;
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}
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try {
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return fromFloat(value, exp || 0);
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}
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catch (e) {
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throw new Error(`${fmt(key)} must be a fixed number.`);
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}
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}
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ufixed(key, exp, fallback = null) {
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const value = this.fixed(key, exp);
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if (value === null) {
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return fallback;
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}
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if (value < 0) {
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throw new Error(`${fmt(key)} must be a positive fixed number.`);
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}
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return value;
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}
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bool(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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// Bitcoin Core compat.
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if (typeof value === "number") {
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if (value === 1) {
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return true;
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}
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if (value === 0) {
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return false;
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}
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}
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if (typeof value !== "string") {
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if (typeof value !== "boolean") {
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throw new Error(`${fmt(key)} must be a boolean.`);
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}
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return value;
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}
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if (value === "true" || value === "1") {
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return true;
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}
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if (value === "false" || value === "0") {
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return false;
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}
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throw new Error(`${fmt(key)} must be a boolean.`);
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}
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buf(key, fallback = null, enc = "hex") {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "string") {
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if (!Buffer.isBuffer(value)) {
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throw new Error(`${fmt(key)} must be a buffer.`);
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}
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return value;
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}
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const data = Buffer.from(value, enc);
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if (data.length !== Buffer.byteLength(value, enc)) {
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throw new Error(`${fmt(key)} must be a ${enc} string.`);
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}
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return data;
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}
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array(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "string") {
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if (!Array.isArray(value)) {
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throw new Error(`${fmt(key)} must be an array.`);
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}
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return value;
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}
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const parts = value.trim().split(/\s*,\s*/);
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const result = [];
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for (const part of parts) {
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if (part.length === 0) {
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continue;
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}
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result.push(part);
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}
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return result;
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}
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obj(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "object" || Array.isArray(value)) {
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throw new Error(`${fmt(key)} must be an object.`);
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}
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return value;
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}
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func(key, fallback = null) {
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const value = this.get(key);
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if (value === null) {
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return fallback;
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}
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if (typeof value !== "function") {
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throw new Error(`${fmt(key)} must be a function.`);
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}
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return value;
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}
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mb(key, fallback = null) {
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const value = this.uint(key);
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if (value === null) {
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return fallback;
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}
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return value * 1024 * 1024;
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}
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parseArg(args) {
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for (let key in args._) {
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let newKey = key.replace("-", "");
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object_path_1.default.set(this.data, newKey, args[key]);
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}
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}
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parseEnv(env) {
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let prefix = this.module;
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prefix = prefix.toUpperCase();
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prefix = prefix.replace(/-/g, "_");
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prefix += "_";
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if (!env || typeof env !== "object") {
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env = process.env;
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}
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(0, bsert_1.default)(env && typeof env === "object");
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for (let key of Object.keys(env)) {
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const value = env[key];
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(0, bsert_1.default)(typeof value === "string");
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if (key.indexOf(prefix) !== 0) {
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continue;
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}
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if (!isUpperKey(key)) {
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continue;
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}
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key = key.substring(prefix.length);
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key = this.normalize(key, true);
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if (value.length === 0) {
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continue;
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}
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object_path_1.default.set(this.data, key);
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}
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}
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}
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exports.default = Config;
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/*
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* Helpers
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*/
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function fmt(key) {
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if (Array.isArray(key)) {
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key = key[0];
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}
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if (typeof key === "number") {
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return `Argument #${key}`;
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}
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return key;
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}
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function isAlpha(str) {
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return /^[a-z0-9_\-]+$/i.test(str);
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}
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function isKey(key) {
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return /^[a-zA-Z0-9]+$/.test(key);
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}
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function isUpperKey(key) {
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if (!isKey(key)) {
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return false;
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}
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return !/[a-z]/.test(key);
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}
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function fromFloat(num, exp) {
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(0, bsert_1.default)(typeof num === "number" && isFinite(num));
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(0, bsert_1.default)(Number.isSafeInteger(exp));
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let str = num.toFixed(exp);
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let sign = 1;
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if (str.length > 0 && str[0] === "-") {
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str = str.substring(1);
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sign = -1;
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}
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let hi = str;
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let lo = "0";
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const index = str.indexOf(".");
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if (index !== -1) {
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hi = str.substring(0, index);
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lo = str.substring(index + 1);
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}
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hi = hi.replace(/^0+/, "");
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lo = lo.replace(/0+$/, "");
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(0, bsert_1.default)(hi.length <= 16 - exp, "Fixed number string exceeds 2^53-1.");
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(0, bsert_1.default)(lo.length <= exp, "Too many decimal places in fixed number string.");
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if (hi.length === 0) {
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hi = "0";
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}
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while (lo.length < exp) {
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lo += "0";
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}
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if (lo.length === 0) {
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lo = "0";
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}
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(0, bsert_1.default)(/^\d+$/.test(hi) && /^\d+$/.test(lo), "Non-numeric characters in fixed number string.");
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hi = parseInt(hi, 10);
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lo = parseInt(lo, 10);
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const mult = Math.pow(10, exp);
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const maxLo = Number.MAX_SAFE_INTEGER % mult;
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const maxHi = (Number.MAX_SAFE_INTEGER - maxLo) / mult;
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(0, bsert_1.default)(hi < maxHi || (hi === maxHi && lo <= maxLo), "Fixed number string exceeds 2^53-1.");
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return sign * (hi * mult + lo);
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}
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//# sourceMappingURL=index.js.map
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