Function commandParser

bin/csvtojson.js:105–172

()

  }

  function commandParser() {
    var parsedCmd = {
      "cmd": "parse",
      "options": {},
      "inputStream": process.stdin
    };

    function parseObject(val, optional) {
      try {
        return JSON.parse(val);
      } catch (e) {
        if (optional) {
          return val;
        } else {
          console.error(e);
          process.exit(1);
        }
      }
    }

    function parseBool(str, optName) {
      str = str.toLowerCase();
      if (str === "true" || str === "y") {
        return true;
      } else if (str === "false" || str === "n") {
        return false;
      }
      console.log("Unknown boolean value %s for parameter %s.", str, optName);
      _showHelp(1);
    }
    process.argv.slice(2).forEach(function (item) {
      if (item.indexOf("--") > -1) {
        var itemArr = item.split("=");
        var optName = itemArr[0];
        var key, val, type;
        if (!opts[optName]) {
          console.log("Option %s not supported.", optName);
          _showHelp(1);
        }
        key = optName.replace('--', '');
        val = itemArr[1] || '';
        type = opts[optName].type;
        if (type === "string") {
          parsedCmd.options[key] = val.toString();
        } else if (type === "boolean") {
          parsedCmd.options[key] = parseBool(val, optName);
        } else if (type === "number") {
          parsedCmd.options[key] = parseFloat(val);
        } else if (type === "object") {
          parsedCmd.options[key] = parseObject(val, false);
        } else if (type === "~object") {
          parsedCmd.options[key] = parseObject(val, true);
        } else {
          throw ({
            name: "UnimplementedException",
            message: "Option type parsing not implemented. See bin/options.json"
          });
        }