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feat: add character class support in regex if string literal pattern provided

pull/7268/head
Pranav C 12 months ago
parent
commit
f785138d3f
  1. 46
      packages/nocodb/src/db/functionMappings/pg.ts

46
packages/nocodb/src/db/functionMappings/pg.ts

@ -3,7 +3,25 @@ import commonFns from './commonFns';
import type { MapFnArgs } from '../mapFunctionName';
import { convertUnits } from '~/helpers/convertUnits';
import { getWeekdayByText } from '~/helpers/formulaFnHelper';
const replaceCharClassShorthandlers = (str: string) => {
return str.replace(/(.|^)\\([dDsSwW])/g, (fullMatch, prevChar, alias) => {
if (prevChar === '\\') return fullMatch;
switch (alias) {
case 'd':
return `${prevChar}[0-9]`;
case 'D':
return `${prevChar}[^0-9]`;
case 's':
return `${prevChar}[\f\n\r\t\v\u0020\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]`;
case 'S':
return `${prevChar}[^\f\n\r\t\v\u0020\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]`;
case 'w':
return `${prevChar}[A-Za-z0-9_]`;
case 'W':
return `${prevChar}[^A-Za-z0-9_]`;
}
});
};
const pg = {
...commonFns,
LEN: 'length',
@ -227,15 +245,31 @@ const pg = {
},
REGEX_MATCH: async ({ fn, knex, pt, colAlias }: MapFnArgs) => {
const source = (await fn(pt.arguments[0])).builder;
// replace shorthand character classes with their equivalent character sets
if (pt.arguments[1].type === 'Literal') {
pt.arguments[1].value = replaceCharClassShorthandlers(
pt.arguments[1].value,
);
}
const pattern = (await fn(pt.arguments[1])).builder;
return {
builder: knex.raw(
`CASE WHEN (${source}::TEXT ~ ${pattern}::TEXT) THEN 1 ELSE 0 END ${colAlias}`,
`CASE WHEN REGEXP_MATCH(${source}::TEXT, ${pattern}::TEXT) IS NULL THEN 0 ELSE 1 END ${colAlias}`,
),
};
},
REGEX_EXTRACT: async ({ fn, knex, pt, colAlias }: MapFnArgs) => {
const source = (await fn(pt.arguments[0])).builder;
// replace shorthand character classes with their equivalent character sets
if (pt.arguments[1].type === 'Literal') {
pt.arguments[1].value = replaceCharClassShorthandlers(
pt.arguments[1].value,
);
}
const pattern = (await fn(pt.arguments[1])).builder;
return {
builder: knex.raw(
@ -248,6 +282,14 @@ const pg = {
REGEX_REPLACE: async ({ fn, knex, pt, colAlias }: MapFnArgs) => {
const source = (await fn(pt.arguments[0])).builder;
const pattern = (await fn(pt.arguments[1])).builder;
// replace shorthand character classes with their equivalent character sets
if (pt.arguments[1].type === 'Literal') {
pt.arguments[1].value = replaceCharClassShorthandlers(
pt.arguments[1].value,
);
}
const replacement = (await fn(pt.arguments[2])).builder;
return {
builder: knex.raw(

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