@cocalc/project/dist/print_to_pdf.js

CoCalc: project daemon

// Generated by CoffeeScript 2.5.1
(function() {
  //########################################################################
  // This file is part of CoCalc: Copyright © 2020 Sagemath, Inc.
  // License: AGPLv3 s.t. "Commons Clause" – see LICENSE.md for details
  //########################################################################

  //##############################################
  // Printing an individual file to pdf
  //##############################################
  var async, defaults, fs, message, misc, misc_node, print_sagews, required, temp;

  async = require('async');

  fs = require('fs');

  temp = require('temp');

  misc = require('@cocalc/util/misc');

  misc_node = require('@cocalc/backend/misc_node');

  message = require('@cocalc/util/message');

  ({defaults, required} = misc);

  print_sagews = function(opts) {
    var args, extra_data_file;
    opts = defaults(opts, {
      path: required,
      outfile: required,
      title: required,
      author: required,
      date: required,
      contents: required,
      subdir: required, // 'true' or 'false', if true, then workdir is a generated subdirectory which will retain the temporary tex files
      base_url: void 0, // the base_url for downloading blobs/images
      extra_data: void 0, // extra data that is useful for displaying certain things in the worksheet.
      timeout: 90,
      cb: required
    });
    extra_data_file = void 0;
    args = [opts.path, '--outfile', opts.outfile, '--title', opts.title, '--author', opts.author, '--date', opts.date, '--subdir', opts.subdir, '--contents', opts.contents];
    if (opts.base_url) {
      args = args.concat(['--base_url', opts.base_url]);
    }
    return async.series([
      function(cb) {
        if (opts.extra_data == null) {
          cb();
          return;
        }
        extra_data_file = temp.path() + '.json';
        args.push('--extra_data_file');
        args.push(extra_data_file);
        // NOTE: extra_data is a string that is *already* in JSON format.
        return fs.writeFile(extra_data_file,
      opts.extra_data,
      cb);
      },
      function(cb) {
        // run the converter script
        return misc_node.execute_code({
          command: "smc-sagews2pdf",
          args: args,
          err_on_exit: true,
          bash: false,
          timeout: opts.timeout,
          cb: cb
        });
      }
    ], (err) => {
      if (extra_data_file != null) {
        fs.unlink(extra_data_file); // no need to wait for completion before calling opts.cb
      }
      return opts.cb(err);
    });
  };

  exports.print_to_pdf = function(socket, mesg) {
    var ext, pdf;
    ext = misc.filename_extension(mesg.path);
    if (ext) {
      pdf = `${mesg.path.slice(0, mesg.path.length - ext.length)}pdf`;
    } else {
      pdf = mesg.path + '.pdf';
    }
    return async.series([
      function(cb) {
        switch (ext) {
          case 'sagews':
            return print_sagews({
              path: mesg.path,
              outfile: pdf,
              title: mesg.options.title,
              author: mesg.options.author,
              date: mesg.options.date,
              contents: mesg.options.contents,
              subdir: mesg.options.subdir,
              extra_data: mesg.options.extra_data,
              timeout: mesg.options.timeout,
              cb: cb
            });
          default:
            return cb(`unable to print file of type '${ext}'`);
        }
      }
    ], function(err) {
      if (err) {
        return socket.write_mesg('json', message.error({
          id: mesg.id,
          error: err
        }));
      } else {
        return socket.write_mesg('json', message.printed_to_pdf({
          id: mesg.id,
          path: pdf
        }));
      }
    });
  };

}).call(this);

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