hackernews2nntp/lib/hackernews2nntp-convert.js

Post Hacker News Stories & Comments to an NNTP Server

// Generated by CoffeeScript 1.8.0
(function() {
  var Message, conf, dispatcher, errx, ext_deps, ext_deps_check, log, mbox, message_create, meta, path, program, readline, shellquote, spawn, warnx, which, wrap_mail;

  readline = require('readline');

  path = require('path');

  spawn = require('child_process').spawn;

  program = require('commander');

  shellquote = require('shell-quote');

  which = require('which');

  meta = require('../package.json');

  Message = require('./message');

  mbox = require('./mbox');

  conf = {
    verbose: false,
    format: 'rnews',
    cmd: ['sudo', 'rnews', '-N'],
    destination: 'printer',
    ext_deps: [],
    template_dir: null
  };

  warnx = function(msg) {
    return console.error("" + (path.basename(process.argv[1])) + " warning: " + msg);
  };

  errx = function(msg) {
    console.error("" + (path.basename(process.argv[1])) + " error: " + msg);
    return process.exit(1);
  };

  log = function(msg) {
    if (conf.verbose) {
      return console.error("" + (path.basename(process.argv[1])) + ": " + msg);
    }
  };

  dispatcher = {
    printer: function(id, mail) {
      log("" + id + ": writing");
      return process.stdout.write("" + mail + "\n");
    },
    fork: function(id, mail) {
      var cmd, stderr, text;
      text = '';
      stderr = '';
      log("" + id + ": writing to `" + (conf.cmd.join(' ')) + "`");
      cmd = spawn(conf.cmd[0], conf.cmd.slice(1));
      cmd.on('error', function(err) {
        return warnx("" + id + ": cmd failed: " + err.message);
      });
      cmd.stdout.on('data', function(data) {
        return text += data;
      });
      cmd.stderr.on('data', function(data) {
        return stderr += data;
      });
      cmd.on('close', function(code) {
        return log("" + id + ": cmd exit code: " + code);
      });
      cmd.stdin.write("" + mail + "\n");
      return cmd.stdin.end();
    }
  };

  wrap_mail = function(message) {
    var sendoff;
    if (!message) {
      return;
    }
    sendoff = dispatcher[conf.destination];
    return message.render().then(function(mail) {
      if (conf.format === 'rnews') {
        return sendoff(message.json_data.id, "#! rnews " + (Buffer.byteLength(mail) + 1) + "\n" + mail);
      } else if (conf.format === 'mbox') {
        return sendoff(message.json_data.id, "" + (mbox.prefix(message.json_data)) + "\n" + (mbox.escape(mail)));
      } else {
        return sendoff(message.json_data.id, mail);
      }
    }).done();
  };

  message_create = function(json, parts) {
    var err, message;
    if (parts == null) {
      parts = [];
    }
    try {
      message = new Message(json, parts);
      message.opt.alt_dir = conf.template_dir;
    } catch (_error) {
      err = _error;
      if (err.message.match(/invalid json input/)) {
        warnx("json validation failed");
        return null;
      } else {
        throw err;
      }
    }
    return message;
  };

  ext_deps = function() {
    return ['w3m', conf.cmd[0]];
  };

  ext_deps_check = function() {
    var e, idx, _i, _len, _ref, _results;
    _ref = ext_deps();
    _results = [];
    for (_i = 0, _len = _ref.length; _i < _len; _i++) {
      idx = _ref[_i];
      try {
        _results.push(which.sync(idx));
      } catch (_error) {
        e = _error;
        _results.push(errx("" + idx + " not found in PATH"));
      }
    }
    return _results;
  };

  exports.main = function() {
    var poll, poll_read, pollopts, rl;
    program.version(meta.version).option('-v, --verbose', 'Print debug info to stderr').option('--fork', "Don't print the result to stdout, but feed an external program w/ input").option('--cmd <string>', "Custom external command instead of `" + (conf.cmd.join(' ')) + "`").option('-f, --format <format>', 'Convert to rnews (default), mbox or plain').option('--template-dir <name>', 'A directory w/ custom templates').parse(process.argv);
    if (program.verbose) {
      conf.verbose = program.verbose;
    }
    if (program.fork) {
      conf.destination = 'fork';
    }
    if (program.format) {
      conf.format = program.format;
    }
    if (program.cmd) {
      conf.cmd = shellquote.parse(program.cmd);
    }
    if (program.templateDir) {
      conf.template_dir = program.templateDir;
    }
    ext_deps_check();
    rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout,
      terminal: false
    });
    poll = null;
    poll_read = 0;
    pollopts = [];
    rl.on('line', function(line) {
      var err, json, message, _ref;
      try {
        json = JSON.parse(line);
      } catch (_error) {
        err = _error;
        warnx("line not parsed: " + err.message);
        return;
      }
      if (!poll && json.type === 'poll') {
        poll = json;
        if (((_ref = json.parts) != null ? _ref.length : void 0) < 1) {
          warnx("invalid poll w/ id=" + json.id);
          poll = null;
          return;
        }
        return poll_read = json.parts.length;
      } else if (poll) {
        --poll_read;
        pollopts.push(json);
        if (poll_read === 0) {
          message = message_create(poll, pollopts);
          wrap_mail(message);
          poll = null;
          return pollopts = [];
        }
      } else {
        message = message_create(json);
        return wrap_mail(message);
      }
    });
    return process.stdout.on('error', function(err) {
      if (err.code === "EPIPE") {
        warnx("program you pipe in stopped reading input");
      }
      return errx(err);
    });
  };

}).call(this);