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// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (c) 2015-2024 MariaDB Corporation Ab
'use strict';
const FieldType = require('../../const/field-type');
const Errors = require('../../misc/errors');
module.exports.newRow = function (packet, columns) {
packet.skip(1); // skip 0x00 header.
const len = ~~((columns.length + 9) / 8);
const nullBitMap = new Array(len);
for (let i = 0; i < len; i++) nullBitMap[i] = packet.readUInt8();
return nullBitMap;
};
module.exports.castWrapper = function (column, packet, opts, nullBitmap, index) {
column.string = () => (isNullBitmap(index, nullBitmap) ? null : packet.readStringLengthEncoded());
column.buffer = () => (isNullBitmap(index, nullBitmap) ? null : packet.readBufferLengthEncoded());
column.float = () => (isNullBitmap(index, nullBitmap) ? null : packet.readFloat());
column.tiny = () =>
isNullBitmap(index, nullBitmap) ? null : column.signed() ? packet.readInt8() : packet.readUInt8();
column.short = () =>
isNullBitmap(index, nullBitmap) ? null : column.signed() ? packet.readInt16() : packet.readUInt16();
column.int = () => (isNullBitmap(index, nullBitmap) ? null : packet.readInt32());
column.long = () => (isNullBitmap(index, nullBitmap) ? null : packet.readBigInt64());
column.decimal = () => (isNullBitmap(index, nullBitmap) ? null : packet.readDecimalLengthEncoded());
column.date = () => (isNullBitmap(index, nullBitmap) ? null : packet.readBinaryDate(opts));
column.datetime = () => (isNullBitmap(index, nullBitmap) ? null : packet.readBinaryDateTime());
column.geometry = () => {
let defaultVal = null;
if (column.dataTypeName) {
switch (column.dataTypeName) {
case 'point':
defaultVal = { type: 'Point' };
break;
case 'linestring':
defaultVal = { type: 'LineString' };
break;
case 'polygon':
defaultVal = { type: 'Polygon' };
break;
case 'multipoint':
defaultVal = { type: 'MultiPoint' };
break;
case 'multilinestring':
defaultVal = { type: 'MultiLineString' };
break;
case 'multipolygon':
defaultVal = { type: 'MultiPolygon' };
break;
default:
defaultVal = { type: column.dataTypeName };
break;
}
}
if (isNullBitmap(index, nullBitmap)) {
return defaultVal;
}
return packet.readGeometry(defaultVal);
};
};
module.exports.parser = function (col, opts) {
// set reader function read(col, packet, index, nullBitmap, opts, throwUnexpectedError)
// this permit for multi-row result-set to avoid resolving type parsing each data.
// return constant parser (function not depending on column info other than type)
const defaultParser = col.signed()
? DEFAULT_SIGNED_PARSER_TYPE[col.columnType]
: DEFAULT_UNSIGNED_PARSER_TYPE[col.columnType];
if (defaultParser) return defaultParser;
// parser depending on column info
switch (col.columnType) {
case FieldType.BIGINT:
if (col.signed()) {
return opts.bigIntAsNumber || opts.supportBigNumbers ? readBigintAsIntBinarySigned : readBigintBinarySigned;
}
return opts.bigIntAsNumber || opts.supportBigNumbers ? readBigintAsIntBinaryUnsigned : readBigintBinaryUnsigned;
case FieldType.DATETIME:
case FieldType.TIMESTAMP:
return opts.dateStrings ? readTimestampStringBinary.bind(null, col.scale) : readTimestampBinary;
case FieldType.DECIMAL:
case FieldType.NEWDECIMAL:
return col.scale === 0 ? readDecimalAsIntBinary : readDecimalBinary;
case FieldType.GEOMETRY:
let defaultVal = col.__getDefaultGeomVal();
return readGeometryBinary.bind(null, defaultVal);
case FieldType.BIT:
if (col.columnLength === 1 && opts.bitOneIsBoolean) {
return readBitBinaryBoolean;
}
return readBinaryBuffer;
case FieldType.JSON:
return opts.jsonStrings ? readStringBinary : readJsonBinary;
default:
if (col.dataTypeFormat && col.dataTypeFormat === 'json' && opts.autoJsonMap) {
return readJsonBinary;
}
if (col.collation.index === 63) {
return readBinaryBuffer;
}
if (col.isSet()) {
return readBinarySet;
}
return readStringBinary;
}
};
const isNullBitmap = (index, nullBitmap) => {
return (nullBitmap[~~((index + 2) / 8)] & (1 << (index + 2) % 8)) > 0;
};
const readTinyBinarySigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readInt8();
const readTinyBinaryUnsigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readUInt8();
const readShortBinarySigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readInt16();
const readShortBinaryUnsigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readUInt16();
const readMediumBinarySigned = (packet, opts, throwUnexpectedError, nullBitmap, index) => {
if (isNullBitmap(index, nullBitmap)) {
return null;
}
const result = packet.readInt24();
packet.skip(1); // MEDIUMINT is encoded on 4 bytes in exchanges !
return result;
};
const readMediumBinaryUnsigned = (packet, opts, throwUnexpectedError, nullBitmap, index) => {
if (isNullBitmap(index, nullBitmap)) {
return null;
}
const result = packet.readUInt24();
packet.skip(1); // MEDIUMINT is encoded on 4 bytes in exchanges !
return result;
};
const readIntBinarySigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readInt32();
const readIntBinaryUnsigned = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readUInt32();
const readFloatBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readFloat();
const readDoubleBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readDouble();
const readBigintBinaryUnsigned = function (packet, opts, throwUnexpectedError, nullBitmap, index) {
if (isNullBitmap(index, nullBitmap)) return null;
return packet.readBigUInt64();
};
const readBigintBinarySigned = function (packet, opts, throwUnexpectedError, nullBitmap, index) {
if (isNullBitmap(index, nullBitmap)) return null;
return packet.readBigInt64();
};
const readBigintAsIntBinaryUnsigned = function (packet, opts, throwUnexpectedError, nullBitmap, index) {
if (isNullBitmap(index, nullBitmap)) return null;
const val = packet.readBigUInt64();
if (opts.bigIntAsNumber && opts.checkNumberRange && !Number.isSafeInteger(Number(val))) {
return throwUnexpectedError(
`value ${val} can't safely be converted to number`,
false,
null,
'42000',
Errors.ER_PARSING_PRECISION
);
}
if (opts.supportBigNumbers && (opts.bigNumberStrings || !Number.isSafeInteger(Number(val)))) {
return val.toString();
}
return Number(val);
};
const readBigintAsIntBinarySigned = function (packet, opts, throwUnexpectedError, nullBitmap, index) {
if (isNullBitmap(index, nullBitmap)) return null;
const val = packet.readBigInt64();
if (opts.bigIntAsNumber && opts.checkNumberRange && !Number.isSafeInteger(Number(val))) {
return throwUnexpectedError(
`value ${val} can't safely be converted to number`,
false,
null,
'42000',
Errors.ER_PARSING_PRECISION
);
}
if (opts.supportBigNumbers && (opts.bigNumberStrings || !Number.isSafeInteger(Number(val)))) {
return val.toString();
}
return Number(val);
};
const readGeometryBinary = (defaultVal, packet, opts, throwUnexpectedError, nullBitmap, index) => {
if (isNullBitmap(index, nullBitmap)) {
return defaultVal;
}
return packet.readGeometry(defaultVal);
};
const readDateBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBinaryDate(opts);
const readTimestampBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBinaryDateTime();
const readTimestampStringBinary = (scale, packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBinaryDateTimeAsString(scale);
const readTimeBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBinaryTime();
const readDecimalAsIntBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) => {
//checkNumberRange additional check is only done when
// resulting value is an integer
if (isNullBitmap(index, nullBitmap)) return null;
const valDec = packet.readDecimalLengthEncoded();
if (valDec != null && (opts.decimalAsNumber || opts.supportBigNumbers)) {
if (opts.decimalAsNumber && opts.checkNumberRange && !Number.isSafeInteger(Number(valDec))) {
return throwUnexpectedError(
`value ${valDec} can't safely be converted to number`,
false,
null,
'42000',
Errors.ER_PARSING_PRECISION
);
}
if (opts.supportBigNumbers && (opts.bigNumberStrings || !Number.isSafeInteger(Number(valDec)))) {
return valDec;
}
return Number(valDec);
}
return valDec;
};
const readDecimalBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) => {
if (isNullBitmap(index, nullBitmap)) return null;
const valDec = packet.readDecimalLengthEncoded();
if (valDec != null && (opts.decimalAsNumber || opts.supportBigNumbers)) {
const numberValue = Number(valDec);
if (
opts.supportBigNumbers &&
(opts.bigNumberStrings || (Number.isInteger(numberValue) && !Number.isSafeInteger(numberValue)))
) {
return valDec;
}
return numberValue;
}
return valDec;
};
const readJsonBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : JSON.parse(packet.readStringLengthEncoded());
const readBitBinaryBoolean = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBufferLengthEncoded()[0] === 1;
const readBinaryBuffer = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readBufferLengthEncoded();
const readBinarySet = (packet, opts, throwUnexpectedError, nullBitmap, index) => {
if (isNullBitmap(index, nullBitmap)) return null;
const string = packet.readStringLengthEncoded();
return string == null ? null : string === '' ? [] : string.split(',');
};
const readStringBinary = (packet, opts, throwUnexpectedError, nullBitmap, index) =>
isNullBitmap(index, nullBitmap) ? null : packet.readStringLengthEncoded();
const DEFAULT_SIGNED_PARSER_TYPE = Array(256);
DEFAULT_SIGNED_PARSER_TYPE[FieldType.TINY] = readTinyBinarySigned;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.YEAR] = readShortBinarySigned;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.SHORT] = readShortBinarySigned;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.INT24] = readMediumBinarySigned;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.INT] = readIntBinarySigned;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.FLOAT] = readFloatBinary;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.DOUBLE] = readDoubleBinary;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.DATE] = readDateBinary;
DEFAULT_SIGNED_PARSER_TYPE[FieldType.TIME] = readTimeBinary;
const DEFAULT_UNSIGNED_PARSER_TYPE = Array(256);
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.TINY] = readTinyBinaryUnsigned;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.YEAR] = readShortBinaryUnsigned;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.SHORT] = readShortBinaryUnsigned;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.INT24] = readMediumBinaryUnsigned;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.INT] = readIntBinaryUnsigned;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.FLOAT] = readFloatBinary;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.DOUBLE] = readDoubleBinary;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.DATE] = readDateBinary;
DEFAULT_UNSIGNED_PARSER_TYPE[FieldType.TIME] = readTimeBinary;