tedious
Version:
A TDS driver, for connecting to MS SQLServer databases.
149 lines (145 loc) • 17.5 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _plpStream = require("./plp-stream");
const MAX = (1 << 16) - 1;
const UNKNOWN_PLP_LEN = Buffer.from([0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]);
const PLP_TERMINATOR = Buffer.from([0x00, 0x00, 0x00, 0x00]);
const NULL_LENGTH = Buffer.from([0xFF, 0xFF]);
const MAX_NULL_LENGTH = Buffer.from([0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
const NO_COLLATION = Buffer.alloc(5);
function encodeUcs2(chunk) {
if (typeof chunk !== 'string') {
throw new TypeError('Invalid string.');
}
return Buffer.from(chunk, 'ucs2');
}
const NVarChar = {
id: 0xE7,
type: 'NVARCHAR',
name: 'NVarChar',
maximumLength: 4000,
declaration: function (parameter) {
const value = parameter.value; // Temporary solution. Remove 'any' later.
if ((0, _plpStream.isAsyncIterable)(value)) {
return 'nvarchar(max)';
}
let length;
if (parameter.length) {
length = parameter.length;
} else if (value != null) {
length = value.toString().length || 1;
} else if (value === null && !parameter.output) {
length = 1;
} else {
length = this.maximumLength;
}
if (length <= this.maximumLength) {
return 'nvarchar(' + length + ')';
} else {
return 'nvarchar(max)';
}
},
resolveLength: function (parameter) {
const value = parameter.value; // Temporary solution. Remove 'any' later.
if (parameter.length != null) {
return parameter.length;
} else if (value != null) {
if (Buffer.isBuffer(value)) {
return value.length / 2 || 1;
} else {
return value.toString().length || 1;
}
} else {
return this.maximumLength;
}
},
writeTypeInfo(buffer, parameter) {
buffer.writeUInt8(this.id);
if (parameter.length <= this.maximumLength) {
buffer.writeUInt16LE(parameter.length * 2);
} else {
buffer.writeUInt16LE(MAX);
}
if (parameter.collation) {
buffer.writeBuffer(parameter.collation.toBuffer().subarray(0, 5));
} else {
buffer.writeBuffer(NO_COLLATION);
}
},
writeValue(buffer, parameter) {
if (parameter.value == null) {
buffer.writeBuffer(parameter.length <= this.maximumLength ? NULL_LENGTH : MAX_NULL_LENGTH);
return;
}
// Read from its source while the request is written; `resolve` declared
// it as `nvarchar(max)`.
if ((0, _plpStream.isAsyncIterable)(parameter.value)) {
return (0, _plpStream.writePlpStream)(buffer, parameter.value, encodeUcs2);
}
const value = parameter.value instanceof Buffer ? parameter.value : parameter.value.toString();
const length = typeof value === 'string' ? value.length * 2 : value.length;
// Sent as `max` (PLP) unless the length is within the maximum, as
// `writeTypeInfo` declares it, so also when it is `undefined` (a TVP
// column without a length) or `NaN`, which fail `>` as well as `<=`.
const isPlp = !(parameter.length <= this.maximumLength);
if (!isPlp) {
buffer.writeUInt16LE(length);
} else {
buffer.writeBuffer(UNKNOWN_PLP_LEN);
if (length === 0) {
buffer.writeBuffer(PLP_TERMINATOR);
return;
}
buffer.writeUInt32LE(length);
}
if (typeof value === 'string') {
buffer.writeString(value, 'ucs2');
} else {
buffer.writeBuffer(value);
}
if (isPlp) {
buffer.writeBuffer(PLP_TERMINATOR);
}
},
validate: function (value) {
if (value == null) {
return null;
}
if (typeof value !== 'string') {
throw new TypeError('Invalid string.');
}
return value;
},
resolve(parameter, collation) {
if ((0, _plpStream.isAsyncIterable)(parameter.value)) {
// Read from its source while the request is written, and sent as
// `nvarchar(max)` since its length is not known up front.
const data = {
value: parameter.value,
length: MAX
};
if (collation) {
data.collation = collation;
}
return data;
}
const value = this.validate(parameter.value, collation);
const data = {
value
};
data.length = parameter.length != null ? parameter.length : this.resolveLength({
...parameter,
value
});
if (collation) {
data.collation = collation;
}
return data;
}
};
var _default = exports.default = NVarChar;
module.exports = NVarChar;
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Remove 'any' later.\n\n    if (isAsyncIterable(value)) {\n      return 'nvarchar(max)';\n    }\n\n    let length;\n    if (parameter.length) {\n      length = parameter.length;\n    } else if (value != null) {\n      length = value.toString().length || 1;\n    } else if (value === null && !parameter.output) {\n      length = 1;\n    } else {\n      length = this.maximumLength;\n    }\n\n    if (length <= this.maximumLength) {\n      return 'nvarchar(' + length + ')';\n    } else {\n      return 'nvarchar(max)';\n    }\n  },\n\n  resolveLength: function(parameter) {\n    const value = parameter.value as any; // Temporary solution. Remove 'any' later.\n    if (parameter.length != null) {\n      return parameter.length;\n    } else if (value != null) {\n      if (Buffer.isBuffer(value)) {\n        return (value.length / 2) || 1;\n      } else {\n        return value.toString().length || 1;\n      }\n    } else {\n      return this.maximumLength;\n    }\n  },\n\n  writeTypeInfo(buffer, parameter) {\n    buffer.writeUInt8(this.id);\n\n    if (parameter.length! <= this.maximumLength) {\n      buffer.writeUInt16LE(parameter.length! * 2);\n    } else {\n      buffer.writeUInt16LE(MAX);\n    }\n\n    if (parameter.collation) {\n      buffer.writeBuffer(parameter.collation.toBuffer().subarray(0, 5));\n    } else {\n      buffer.writeBuffer(NO_COLLATION);\n    }\n  },\n\n  writeValue(buffer, parameter) {\n    if (parameter.value == null) {\n      buffer.writeBuffer(parameter.length! <= this.maximumLength ? NULL_LENGTH : MAX_NULL_LENGTH);\n      return;\n    }\n\n    // Read from its source while the request is written; `resolve` declared\n    // it as `nvarchar(max)`.\n    if (isAsyncIterable(parameter.value)) {\n      return writePlpStream(buffer, parameter.value, encodeUcs2);\n    }\n\n    const value = parameter.value instanceof Buffer ? parameter.value : parameter.value.toString();\n    const length = typeof value === 'string' ? value.length * 2 : value.length;\n\n    // Sent as `max` (PLP) unless the length is within the maximum, as\n    // `writeTypeInfo` declares it, so also when it is `undefined` (a TVP\n    // column without a length) or `NaN`, which fail `>` as well as `<=`.\n    const isPlp = !(parameter.length! <= this.maximumLength);\n\n    if (!isPlp) {\n      buffer.writeUInt16LE(length);\n    } else {\n      buffer.writeBuffer(UNKNOWN_PLP_LEN);\n      if (length === 0) {\n        buffer.writeBuffer(PLP_TERMINATOR);\n        return;\n      }\n      buffer.writeUInt32LE(length);\n    }\n\n    if (typeof value === 'string') {\n      buffer.writeString(value, 'ucs2');\n    } else {\n      buffer.writeBuffer(value);\n    }\n\n    if (isPlp) {\n      buffer.writeBuffer(PLP_TERMINATOR);\n    }\n  },\n\n  validate: function(value): null | string {\n    if (value == null) {\n      return null;\n    }\n\n    if (typeof value !== 'string') {\n      throw new TypeError('Invalid string.');\n    }\n\n    return value;\n  },\n\n  resolve(parameter, collation) {\n    if (isAsyncIterable(parameter.value)) {\n      // Read from its source while the request is written, and sent as\n      // `nvarchar(max)` since its length is not known up front.\n      const data: ParameterData = { value: parameter.value, length: MAX };\n      if (collation) {\n        data.collation = collation;\n      }\n      return data;\n    }\n\n    const value = this.validate(parameter.value, collation);\n    const data: ParameterData = { value };\n    data.length = parameter.length != null ? parameter.length : this.resolveLength!({ ...parameter, value });\n    if (collation) {\n      data.collation = collation;\n    }\n    return data;\n  }\n};\n\nexport default NVarChar;\nmodule.exports = NVarChar;\n"],"mappings":";;;;;;AACA,IAAAA,UAAA,GAAAC,OAAA;AAEA,MAAMC,GAAG,GAAG,CAAC,CAAC,IAAI,EAAE,IAAI,CAAC;AACzB,MAAMC,eAAe,GAAGC,MAAM,CAACC,IAAI,CAAC,CAAC,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;AACrF,MAAMC,cAAc,GAAGF,MAAM,CAACC,IAAI,CAAC,CAAC,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;AAE5D,MAAME,WAAW,GAAGH,MAAM,CAACC,IAAI,CAAC,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC;AAC7C,MAAMG,eAAe,GAAGJ,MAAM,CAACC,IAAI,CAAC,CAAC,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;AACrF,MAAMI,YAAY,GAAGL,MAAM,CAACM,KAAK,CAAC,CAAC,CAAC;AAEpC,SAASC,UAAUA,CAACC,KAAc,EAAU;EAC1C,IAAI,OAAOA,KAAK,KAAK,QAAQ,EAAE;IAC7B,MAAM,IAAIC,SAAS,CAAC,iBAAiB,CAAC;EACxC;EACA,OAAOT,MAAM,CAACC,IAAI,CAACO,KAAK,EAAE,MAAM,CAAC;AACnC;AAEA,MAAME,QAA8C,GAAG;EACrDC,EAAE,EAAE,IAAI;EACRC,IAAI,EAAE,UAAU;EAChBC,IAAI,EAAE,UAAU;EAChBC,aAAa,EAAE,IAAI;EAEnBC,WAAW,EAAE,SAAAA,CAASC,SAAS,EAAE;IAC/B,MAAMC,KAAK,GAAGD,SAAS,CAACC,KAAY,CAAC,CAAC;;IAEtC,IAAI,IAAAC,0BAAe,EAACD,KAAK,CAAC,EAAE;MAC1B,OAAO,eAAe;IACxB;IAEA,IAAIE,MAAM;IACV,IAAIH,SAAS,CAACG,MAAM,EAAE;MACpBA,MAAM,GAAGH,SAAS,CAACG,MAAM;IAC3B,CAAC,MAAM,IAAIF,KAAK,IAAI,IAAI,EAAE;MACxBE,MAAM,GAAGF,KAAK,CAACG,QAAQ,CAAC,CAAC,CAACD,MAAM,IAAI,CAAC;IACvC,CAAC,MAAM,IAAIF,KAAK,KAAK,IAAI,IAAI,CAACD,SAAS,CAACK,MAAM,EAAE;MAC9CF,MAAM,GAAG,CAAC;IACZ,CAAC,MAAM;MACLA,MAAM,GAAG,IAAI,CAACL,aAAa;IAC7B;IAEA,IAAIK,MAAM,IAAI,IAAI,CAACL,aAAa,EAAE;MAChC,OAAO,WAAW,GAAGK,MAAM,GAAG,GAAG;IACnC,CAAC,MAAM;MACL,OAAO,eAAe;IACxB;EACF,CAAC;EAEDG,aAAa,EAAE,SAAAA,CAASN,SAAS,EAAE;IACjC,MAAMC,KAAK,GAAGD,SAAS,CAACC,KAAY,CAAC,CAAC;IACtC,IAAID,SAAS,CAACG,MAAM,IAAI,IAAI,EAAE;MAC5B,OAAOH,SAAS,CAACG,MAAM;IACzB,CAAC,MAAM,IAAIF,KAAK,IAAI,IAAI,EAAE;MACxB,IAAIjB,MAAM,CAACuB,QAAQ,CAACN,KAAK,CAAC,EAAE;QAC1B,OAAQA,KAAK,CAACE,MAAM,GAAG,CAAC,IAAK,CAAC;MAChC,CAAC,MAAM;QACL,OAAOF,KAAK,CAACG,QAAQ,CAAC,CAAC,CAACD,MAAM,IAAI,CAAC;MACrC;IACF,CAAC,MAAM;MACL,OAAO,IAAI,CAACL,aAAa;IAC3B;EACF,CAAC;EAEDU,aAAaA,CAACC,MAAM,EAAET,SAAS,EAAE;IAC/BS,MAAM,CAACC,UAAU,CAAC,IAAI,CAACf,EAAE,CAAC;IAE1B,IAAIK,SAAS,CAACG,MAAM,IAAK,IAAI,CAACL,aAAa,EAAE;MAC3CW,MAAM,CAACE,aAAa,CAACX,SAAS,CAACG,MAAM,GAAI,CAAC,CAAC;IAC7C,CAAC,MAAM;MACLM,MAAM,CAACE,aAAa,CAAC7B,GAAG,CAAC;IAC3B;IAEA,IAAIkB,SAAS,CAACY,SAAS,EAAE;MACvBH,MAAM,CAACI,WAAW,CAACb,SAAS,CAACY,SAAS,CAACE,QAAQ,CAAC,CAAC,CAACC,QAAQ,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACnE,CAAC,MAAM;MACLN,MAAM,CAACI,WAAW,CAACxB,YAAY,CAAC;IAClC;EACF,CAAC;EAED2B,UAAUA,CAACP,MAAM,EAAET,SAAS,EAAE;IAC5B,IAAIA,SAAS,CAACC,KAAK,IAAI,IAAI,EAAE;MAC3BQ,MAAM,CAACI,WAAW,CAACb,SAAS,CAACG,MAAM,IAAK,IAAI,CAACL,aAAa,GAAGX,WAAW,GAAGC,eAAe,CAAC;MAC3F;IACF;;IAEA;IACA;IACA,IAAI,IAAAc,0BAAe,EAACF,SAAS,CAACC,KAAK,CAAC,EAAE;MACpC,OAAO,IAAAgB,yBAAc,EAACR,MAAM,EAAET,SAAS,CAACC,KAAK,EAAEV,UAAU,CAAC;IAC5D;IAEA,MAAMU,KAAK,GAAGD,SAAS,CAACC,KAAK,YAAYjB,MAAM,GAAGgB,SAAS,CAACC,KAAK,GAAGD,SAAS,CAACC,KAAK,CAACG,QAAQ,CAAC,CAAC;IAC9F,MAAMD,MAAM,GAAG,OAAOF,KAAK,KAAK,QAAQ,GAAGA,KAAK,CAACE,MAAM,GAAG,CAAC,GAAGF,KAAK,CAACE,MAAM;;IAE1E;IACA;IACA;IACA,MAAMe,KAAK,GAAG,EAAElB,SAAS,CAACG,MAAM,IAAK,IAAI,CAACL,aAAa,CAAC;IAExD,IAAI,CAACoB,KAAK,EAAE;MACVT,MAAM,CAACE,aAAa,CAACR,MAAM,CAAC;IAC9B,CAAC,MAAM;MACLM,MAAM,CAACI,WAAW,CAAC9B,eAAe,CAAC;MACnC,IAAIoB,MAAM,KAAK,CAAC,EAAE;QAChBM,MAAM,CAACI,WAAW,CAAC3B,cAAc,CAAC;QAClC;MACF;MACAuB,MAAM,CAACU,aAAa,CAAChB,MAAM,CAAC;IAC9B;IAEA,IAAI,OAAOF,KAAK,KAAK,QAAQ,EAAE;MAC7BQ,MAAM,CAACW,WAAW,CAACnB,KAAK,EAAE,MAAM,CAAC;IACnC,CAAC,MAAM;MACLQ,MAAM,CAACI,WAAW,CAACZ,KAAK,CAAC;IAC3B;IAEA,IAAIiB,KAAK,EAAE;MACTT,MAAM,CAACI,WAAW,CAAC3B,cAAc,CAAC;IACpC;EACF,CAAC;EAEDmC,QAAQ,EAAE,SAAAA,CAASpB,KAAK,EAAiB;IACvC,IAAIA,KAAK,IAAI,IAAI,EAAE;MACjB,OAAO,IAAI;IACb;IAEA,IAAI,OAAOA,KAAK,KAAK,QAAQ,EAAE;MAC7B,MAAM,IAAIR,SAAS,CAAC,iBAAiB,CAAC;IACxC;IAEA,OAAOQ,KAAK;EACd,CAAC;EAEDqB,OAAOA,CAACtB,SAAS,EAAEY,SAAS,EAAE;IAC5B,IAAI,IAAAV,0BAAe,EAACF,SAAS,CAACC,KAAK,CAAC,EAAE;MACpC;MACA;MACA,MAAMsB,IAAmB,GAAG;QAAEtB,KAAK,EAAED,SAAS,CAACC,KAAK;QAAEE,MAAM,EAAErB;MAAI,CAAC;MACnE,IAAI8B,SAAS,EAAE;QACbW,IAAI,CAACX,SAAS,GAAGA,SAAS;MAC5B;MACA,OAAOW,IAAI;IACb;IAEA,MAAMtB,KAAK,GAAG,IAAI,CAACoB,QAAQ,CAACrB,SAAS,CAACC,KAAK,EAAEW,SAAS,CAAC;IACvD,MAAMW,IAAmB,GAAG;MAAEtB;IAAM,CAAC;IACrCsB,IAAI,CAACpB,MAAM,GAAGH,SAAS,CAACG,MAAM,IAAI,IAAI,GAAGH,SAAS,CAACG,MAAM,GAAG,IAAI,CAACG,aAAa,CAAE;MAAE,GAAGN,SAAS;MAAEC;IAAM,CAAC,CAAC;IACxG,IAAIW,SAAS,EAAE;MACbW,IAAI,CAACX,SAAS,GAAGA,SAAS;IAC5B;IACA,OAAOW,IAAI;EACb;AACF,CAAC;AAAC,IAAAC,QAAA,GAAAC,OAAA,CAAAC,OAAA,GAEahC,QAAQ;AACvBiC,MAAM,CAACF,OAAO,GAAG/B,QAAQ","ignoreList":[]}