@natlibfi/sru-client/dist/cli.js

SRU Javascript client library

import fs from "fs";
import yargs from "yargs";
import { handleInterrupt } from "@natlibfi/melinda-backend-commons";
import createSruClient from "./index";
run();
function run() {
  process.on("SIGINT", handleInterrupt).on("unhandledRejection", handleInterrupt).on("uncaughtException", handleInterrupt);
  const args = yargs(process.argv.slice(2)).scriptName("sru-cli").wrap(yargs.terminalWidth()).epilog("Copyright (C) 2025 University Of Helsinki (The National Library Of Finland)").usage("Environment variable info in example.env").usage("Installed globally: $0 <query> [options]").usage("Not installed: npx $0 <query> [options]").usage("Build from source: node dist/index.js <query> [options]").showHelpOnFail(true).example([
    ["$ node dist/cli.js rec.id=001234567"],
    ['$ node dist/cli.js dc.title="malli" -s true'],
    ["$ node dist/cli.js <query>"]
  ]).version().env("SRU").positional("query", { type: "string", describe: "sru query" }).options({
    s: { alias: "showOutputRecord", type: "boolean", default: false, describe: "" },
    o: { alias: "overwriteFiles", type: "boolean", default: true, describe: "" },
    a: { alias: "retrieveAll", type: "boolean", default: false, describe: "Retrieve all record for query" },
    r: { alias: "recordSchema", type: "marcxml", default: false, describe: "Sru endpoint record schema" },
    m: { alias: "metadataFormat", type: "string", default: "string", describe: "Record output schema (string (xml), object, marcJson)" },
    w: { alias: "writeFiles", type: "boolean", default: false, describe: "Record output as files" }
  }).check((args2) => {
    const [query2] = args2._;
    if (query2 === void 0) {
      throw new Error("No query given");
    }
    return true;
  }).parseSync();
  const [query] = args._;
  const { url, showOutputRecord, writeFiles, retrieveAll, recordSchema, metadataFormat, overwriteFiles } = args;
  const sruClient = createSruClient({ url, recordSchema, retrieveAll, metadataFormat });
  let recordCounter = 0;
  let recordTotal = 0;
  sruClient.searchRetrieve(query).on("total", onTotal).on("record", onRecord).on("end", onEnd).on("error", onError);
  function onTotal(total) {
    recordTotal = total;
    console.log("********************");
    console.log(`Query has total of ${total} records`);
    console.log("********************");
  }
  function onRecord(record) {
    recordCounter++;
    console.log(`Record ${recordCounter}/${recordTotal}`);
    if (showOutputRecord) {
      console.log("Output:");
      console.log(record);
    }
    const folder = "./results";
    if (writeFiles) {
      console.log(`Writing to file: ${folder}/${recordCounter}`);
      prepareFolder(folder, recordCounter);
      fs.writeFileSync(`${folder}/${recordCounter}`, JSON.stringify(record.toObject()));
      return;
    }
    function prepareFolder(folder2, fileName) {
      if (fs.existsSync(folder2)) {
        if (overwriteFiles) {
          return;
        }
        if (fs.existsSync(`${folder2}/${fileName}`)) {
          throw new Error(`${folder2}/${fileName} allready exist`);
        }
        return;
      }
      fs.mkdirSync(folder2);
      return;
    }
  }
  function onEnd(nextRecordOffset) {
    console.log("********** THE END **********");
    console.log(`NextRecordOffset: ${nextRecordOffset}`);
    console.log("********************");
  }
  function onError(err) {
    console.log(`Error: ${err}`);
  }
}
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