intern-Assignment/db_connect/node_modules/sequelize/lib/sql-string.js
2025-01-31 15:20:39 +05:30

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"use strict";
const moment = require("moment");
const dataTypes = require("./data-types");
const { logger } = require("./utils/logger");
function arrayToList(array, timeZone, dialect, format2) {
return array.reduce((sql, val, i) => {
if (i !== 0) {
sql += ", ";
}
if (Array.isArray(val)) {
sql += `(${arrayToList(val, timeZone, dialect, format2)})`;
} else {
sql += escape(val, timeZone, dialect, format2);
}
return sql;
}, "");
}
exports.arrayToList = arrayToList;
function escape(val, timeZone, dialect, format2) {
let prependN = false;
if (val === void 0 || val === null) {
return "NULL";
}
switch (typeof val) {
case "boolean":
if (["sqlite", "mssql", "oracle"].includes(dialect)) {
return +!!val;
}
return (!!val).toString();
case "number":
case "bigint":
return val.toString();
case "string":
prependN = dialect === "mssql";
break;
}
if (val instanceof Date) {
val = dataTypes[dialect].DATE.prototype.stringify(val, { timezone: timeZone });
}
if (Buffer.isBuffer(val)) {
if (dataTypes[dialect].BLOB) {
return dataTypes[dialect].BLOB.prototype.stringify(val);
}
return dataTypes.BLOB.prototype.stringify(val);
}
if (Array.isArray(val)) {
const partialEscape = (escVal) => escape(escVal, timeZone, dialect, format2);
if (dialect === "postgres" && !format2) {
return dataTypes.ARRAY.prototype.stringify(val, { escape: partialEscape });
}
return arrayToList(val, timeZone, dialect, format2);
}
if (!val.replace) {
throw new Error(`Invalid value ${logger.inspect(val)}`);
}
if (["postgres", "sqlite", "mssql", "snowflake", "db2"].includes(dialect)) {
val = val.replace(/'/g, "''");
if (dialect === "postgres") {
val = val.replace(/\0/g, "\\0");
}
} else if (dialect === "oracle" && typeof val === "string") {
if (val.startsWith("TO_TIMESTAMP_TZ") || val.startsWith("TO_DATE")) {
const splitVal = val.split(/\(|\)/);
if (splitVal.length !== 3 || splitVal[2] !== "") {
throw new Error("Invalid SQL function call.");
}
const functionName = splitVal[0].trim();
const insideParens = splitVal[1].trim();
if (functionName !== "TO_TIMESTAMP_TZ" && functionName !== "TO_DATE") {
throw new Error("Invalid SQL function call. Expected TO_TIMESTAMP_TZ or TO_DATE.");
}
const params = insideParens.split(",");
if (params.length !== 2) {
throw new Error("Unexpected input received.\nSequelize supports TO_TIMESTAMP_TZ or TO_DATE exclusively with a combination of value and format.");
}
const dateValue = params[0].trim().replace(/'/g, "");
const formatValue = params[1].trim();
if (functionName === "TO_TIMESTAMP_TZ") {
const expectedFormat = "'YYYY-MM-DD HH24:MI:SS.FFTZH:TZM'";
if (formatValue !== expectedFormat) {
throw new Error(`Invalid format string for TO_TIMESTAMP_TZ. Expected format: ${expectedFormat}`);
}
const formattedDate = moment(dateValue).format("YYYY-MM-DD HH:mm:ss.SSS Z");
if (formattedDate !== dateValue) {
throw new Error("Invalid date value for TO_TIMESTAMP_TZ. Expected format: 'YYYY-MM-DD HH:mm:ss.SSS Z'");
}
} else if (functionName === "TO_DATE") {
const expectedFormat = "'YYYY/MM/DD'";
if (formatValue !== expectedFormat) {
throw new Error(`Invalid format string for TO_DATE. Expected format: ${expectedFormat}`);
}
const formattedDate = moment(dateValue).format("YYYY-MM-DD");
if (formattedDate !== dateValue) {
throw new Error("Invalid date value for TO_DATE. Expected format: 'YYYY-MM-DD'");
}
}
return val;
}
val = val.replace(/'/g, "''");
} else {
val = val.replace(/[\0\n\r\b\t\\'"\x1a]/g, (s) => {
switch (s) {
case "\0":
return "\\0";
case "\n":
return "\\n";
case "\r":
return "\\r";
case "\b":
return "\\b";
case " ":
return "\\t";
case "":
return "\\Z";
default:
return `\\${s}`;
}
});
}
return `${(prependN ? "N'" : "'") + val}'`;
}
exports.escape = escape;
function format(sql, values, timeZone, dialect) {
values = [].concat(values);
if (typeof sql !== "string") {
throw new Error(`Invalid SQL string provided: ${sql}`);
}
return sql.replace(/\?/g, (match) => {
if (!values.length) {
return match;
}
return escape(values.shift(), timeZone, dialect, true);
});
}
exports.format = format;
function formatNamedParameters(sql, values, timeZone, dialect) {
return sql.replace(/:+(?!\d)(\w+)/g, (value, key) => {
if (dialect === "postgres" && value.slice(0, 2) === "::") {
return value;
}
if (values[key] !== void 0) {
return escape(values[key], timeZone, dialect, true);
}
throw new Error(`Named parameter "${value}" has no value in the given object.`);
});
}
exports.formatNamedParameters = formatNamedParameters;
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