coc-java/lib/requirements.js

Java langauage extension for coc.nvim

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const coc_nvim_1 = require("coc.nvim");
const child_process_1 = tslib_1.__importDefault(require("child_process"));
const path_1 = tslib_1.__importDefault(require("path"));
const path_exists_1 = tslib_1.__importDefault(require("path-exists"));
const expand_home_dir_1 = tslib_1.__importDefault(require("expand-home-dir"));
const find_java_home_1 = tslib_1.__importDefault(require("find-java-home"));
const vscode_uri_1 = tslib_1.__importDefault(require("vscode-uri"));
const isWindows = process.platform.indexOf('win') === 0;
const JAVAC_FILENAME = 'javac' + (isWindows ? '.exe' : '');
/**
 * Resolves the requirements needed to run the extension.
 * Returns a promise that will resolve to a RequirementsData if
 * all requirements are resolved, it will reject with ErrorData if
 * if any of the requirements fails to resolve.
 *
 */
function resolveRequirements() {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        let java_home = yield checkJavaRuntime();
        let javaVersion = yield checkJavaVersion(java_home);
        return Promise.resolve({ 'java_home': java_home, 'java_version': javaVersion });
    });
}
exports.resolveRequirements = resolveRequirements;
function checkJavaRuntime() {
    return new Promise((resolve, reject) => {
        let source;
        let javaHome = readJavaConfig();
        if (javaHome) {
            source = 'The java.home variable defined in VS Code settings';
        }
        else {
            javaHome = process.env['JDK_HOME'];
            if (javaHome) {
                source = 'The JDK_HOME environment variable';
            }
            else {
                javaHome = process.env['JAVA_HOME'];
                source = 'The JAVA_HOME environment variable';
            }
        }
        if (javaHome) {
            javaHome = expand_home_dir_1.default(javaHome);
            if (!path_exists_1.default.sync(javaHome)) {
                openJDKDownload(reject, source + ' points to a missing folder');
            }
            if (!path_exists_1.default.sync(path_1.default.resolve(javaHome, 'bin', JAVAC_FILENAME))) {
                openJDKDownload(reject, source + ' does not point to a JDK.');
            }
            return resolve(javaHome);
        }
        //No settings, let's try to detect as last resort.
        find_java_home_1.default(function (err, home) {
            if (err) {
                openJDKDownload(reject, 'Java runtime could not be located');
            }
            else {
                resolve(home);
            }
        });
    });
}
function readJavaConfig() {
    const config = coc_nvim_1.workspace.getConfiguration('java');
    return config.get('home', null);
}
function checkJavaVersion(java_home) {
    return new Promise((resolve, reject) => {
        child_process_1.default.execFile(java_home + '/bin/java', ['-version'], {}, (_error, _stdout, stderr) => {
            let javaVersion = parseMajorVersion(stderr);
            if (javaVersion < 8) {
                openJDKDownload(reject, 'Java 8 or more recent is required to run. Please download and install a recent JDK');
            }
            else {
                resolve(javaVersion);
            }
        });
    });
}
function parseMajorVersion(content) {
    let regexp = /version "(.*)"/g;
    let match = regexp.exec(content);
    if (!match) {
        return 0;
    }
    let version = match[1];
    //Ignore '1.' prefix for legacy Java versions
    if (version.startsWith('1.')) {
        version = version.substring(2);
    }
    //look into the interesting bits now
    regexp = /\d+/g;
    match = regexp.exec(version);
    let javaVersion = 0;
    if (match) {
        javaVersion = parseInt(match[0]);
    }
    return javaVersion;
}
exports.parseMajorVersion = parseMajorVersion;
function openJDKDownload(reject, cause) {
    let jdkUrl = 'https://developers.redhat.com/products/openjdk/download/?sc_cid=701f2000000RWTnAAO';
    if (process.platform === 'darwin') {
        jdkUrl = 'http://www.oracle.com/technetwork/java/javase/downloads/index.html';
    }
    reject({
        message: cause,
        label: 'Get the Java Development Kit',
        openUrl: vscode_uri_1.default.parse(jdkUrl),
        replaceClose: false
    });
}
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