update.licenses.js

/*
 * This program and the accompanying materials are made available under the terms of the
 * Eclipse Public License v2.0 which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v20.html
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Copyright Contributors to the Zowe Project.
 *
 */

const { readFileSync, writeFileSync } = require("fs");

require("glob")(
  "{src,resources}{/**/*.js,/**/*.ts,/**/*.md}",
  { ignore: ["**/node_modules/**", "**/out/**"] },
  (globErr, filePaths) => {
    if (globErr) {
      console.log(globErr);
      return;
    }

    let alreadyContainedCopyright = 0;
    const header =
      "/*\n" +
      readFileSync("LICENSE_HEADER")
        .toString()
        .split(/\r?\n/g)
        .map((line) => {
          return ("* " + line).trim();
        })
        .join(require("os").EOL) +
      require("os").EOL +
      "*/" +
      require("os").EOL +
      require("os").EOL;

    try {
      for (const filePath of filePaths) {
        const file = readFileSync(filePath);
        let result = file.toString();
        const resultLines = result.split(/\r?\n/g);
        if (resultLines.join().indexOf(header.split(/\r?\n/g).join()) >= 0) {
          alreadyContainedCopyright++;
          continue; // already has copyright
        }
        const shebangPattern = require("shebang-regex");
        let usedShebang = "";
        result = result.replace(shebangPattern, (fullMatch) => {
          usedShebang = fullMatch + "\n"; // save the shebang that was used, if any
          return "";
        });
        // remove any existing copyright
        // Be very, very careful messing with this regex. Regex is wonderful.
        result = result.replace(
          /\/\*[\s\S]*?(License|SPDX)[\s\S]*?\*\/[\s\n]*/i,
          ""
        );
        result = header + result; // add the new header
        result = usedShebang + result; // add the shebang back
        writeFileSync(filePath, result);
      }
    } catch (e) {
      console.log(e);
    }
  }
);