tedious/lib/data-types/char.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(e) { return e && e.__esModule ? e : { default: e }; }
const NULL_LENGTH = Buffer.from([0xFF, 0xFF]);
const NO_COLLATION = Buffer.from([0x00, 0x00, 0x00, 0x00, 0x00]);
const Char = {
  id: 0xAF,
  type: 'BIGCHAR',
  name: 'Char',
  maximumLength: 8000,
  declaration: function (parameter) {
    const value = parameter.value;
    let length;
    if (parameter.length) {
      length = parameter.length;
    } else if (value != null) {
      length = value.length || 1;
    } else if (value === null && !parameter.output) {
      length = 1;
    } else {
      length = this.maximumLength;
    }
    if (length < this.maximumLength) {
      return 'char(' + length + ')';
    } else {
      return 'char(' + this.maximumLength + ')';
    }
  },
  // ParameterData<any> is temporary solution. TODO: need to understand what type ParameterData<...> can be.
  resolveLength: function (parameter) {
    const value = parameter.value;
    if (parameter.length != null) {
      return parameter.length;
    } else if (value != null) {
      return value.length || 1;
    } else {
      return this.maximumLength;
    }
  },
  writeTypeInfo(buffer, parameter) {
    buffer.writeUInt8(this.id);
    buffer.writeUInt16LE(parameter.length);
    if (parameter.collation) {
      buffer.writeBuffer(parameter.collation.toBuffer().subarray(0, 5));
    } else {
      buffer.writeBuffer(NO_COLLATION);
    }
  },
  writeValue(buffer, parameter) {
    const value = parameter.value;
    if (value == null) {
      buffer.writeBuffer(NULL_LENGTH);
      return;
    }
    buffer.writeUInt16LE(value.length);
    buffer.writeBuffer(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 = exports.default = Char;
module.exports = Char;
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