tedious/lib/data-types/text.js

A TDS driver, for connecting to MS SQLServer databases.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _iconvLite = _interopRequireDefault(require("iconv-lite"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const NULL_LENGTH = Buffer.from([0xFF, 0xFF, 0xFF, 0xFF]);
const Text = {
  id: 0x23,
  type: 'TEXT',
  name: 'Text',
  hasTableName: true,
  declaration: function () {
    return 'text';
  },
  resolveLength: function (parameter) {
    const value = parameter.value;

    if (value != null) {
      return value.length;
    } else {
      return -1;
    }
  },

  generateTypeInfo(parameter, _options) {
    const buffer = Buffer.alloc(10);
    buffer.writeUInt8(this.id, 0);
    buffer.writeInt32LE(parameter.length, 1);

    if (parameter.collation) {
      parameter.collation.toBuffer().copy(buffer, 5, 0, 5);
    }

    return buffer;
  },

  generateParameterLength(parameter, options) {
    const value = parameter.value;

    if (value == null) {
      return NULL_LENGTH;
    }

    const buffer = Buffer.alloc(4);
    buffer.writeInt32LE(value.length, 0);
    return buffer;
  },

  generateParameterData: function* (parameter, options) {
    const value = parameter.value;

    if (value == null) {
      return;
    }

    yield value;
  },
  validate: function (value, collation) {
    if (value == null) {
      return null;
    }

    if (typeof value !== 'string') {
      throw new TypeError('Invalid string.');
    }

    if (!collation) {
      throw new Error('No collation was set by the server for the current connection.');
    }

    if (!collation.codepage) {
      throw new Error('The collation set by the server has no associated encoding.');
    }

    return _iconvLite.default.encode(value, collation.codepage);
  }
};
var _default = Text;
exports.default = _default;
module.exports = Text;
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QStCO01BQzdCLE1BQU0sSUFBSWUsU0FBSixDQUFjLGlCQUFkLENBQU47SUFDRDs7SUFFRCxJQUFJLENBQUNQLFNBQUwsRUFBZ0I7TUFDZCxNQUFNLElBQUlRLEtBQUosQ0FBVSxnRUFBVixDQUFOO0lBQ0Q7O0lBRUQsSUFBSSxDQUFDUixTQUFTLENBQUNTLFFBQWYsRUFBeUI7TUFDdkIsTUFBTSxJQUFJRCxLQUFKLENBQVUsNkRBQVYsQ0FBTjtJQUNEOztJQUVELE9BQU9FLG1CQUFNQyxNQUFOLENBQWFuQixLQUFiLEVBQW9CUSxTQUFTLENBQUNTLFFBQTlCLENBQVA7RUFDRDtBQXpFb0IsQ0FBdkI7ZUE0RWV6QixJOztBQUNmNEIsTUFBTSxDQUFDQyxPQUFQLEdBQWlCN0IsSUFBakIifQ==