UNPKG

tedious

Version:

A TDS driver, for connecting to MS SQLServer databases.

github.com/tediousjs/tedious

tediousjs/tedious

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"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.default = void 0; const NULL_LENGTH = Buffer.from([0xFF, 0xFF]); const NO_COLLATION = Buffer.from([0x00, 0x00, 0x00, 0x00, 0x00]); const NChar = { id: 0xEF, type: 'NCHAR', name: 'NChar', maximumLength: 4000, declaration: function (parameter) { // const value = parameter.value as null | string | { toString(): string }; const value = parameter.value; // Temporary solution. Remove 'any' later. let length; if (parameter.length) { length = parameter.length; } else if (parameter.value != null) { length = value.toString().length || 1; } else if (parameter.value === null && !parameter.output) { length = 1; } else { length = this.maximumLength; } if (length < this.maximumLength) { return 'nchar(' + length + ')'; } else { return 'nchar(' + this.maximumLength + ')'; } }, resolveLength: function (parameter) { // const value = parameter.value as null | string | { toString(): string }; const value = parameter.value; // Temporary solution. Remove 'any' later. if (parameter.length != null) { return parameter.length; } else if (parameter.value != null) { if (Buffer.isBuffer(parameter.value)) { return parameter.value.length / 2 || 1; } else { return value.toString().length || 1; } } else { return this.maximumLength; } }, writeTypeInfo(buffer, parameter) { buffer.writeUInt8(this.id); buffer.writeUInt16LE(parameter.length * 2); 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; } if (Buffer.isBuffer(value)) { buffer.writeUInt16LE(value.length); buffer.writeBuffer(value); } else { const string = String(value); buffer.writeUInt16LE(string.length * 2); buffer.writeString(string, 'ucs2'); } }, validate: function (value) { if (value == null) { return null; } if (typeof value !== 'string') { throw new TypeError('Invalid string.'); } return value; } }; var _default = exports.default = NChar; module.exports = NChar; //# 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