/opt/canhelp/node_modules/next/dist/esm/shared/lib/router/utils
Edit: /opt/canhelp/node_modules/next/dist/esm/shared/lib/router/utils/route-regex.js (9315B)
import { NEXT_INTERCEPTION_MARKER_PREFIX, NEXT_QUERY_PARAM_PREFIX } from '../../../../lib/constants';
import { INTERCEPTION_ROUTE_MARKERS } from './interception-routes';
import { escapeStringRegexp } from '../../escape-regexp';
import { removeTrailingSlash } from './remove-trailing-slash';
import { PARAMETER_PATTERN, parseMatchedParameter } from './get-dynamic-param';
function getParametrizedRoute(route, includeSuffix, includePrefix) {
const groups = {};
let groupIndex = 1;
const segments = [];
for (const segment of removeTrailingSlash(route).slice(1).split('/')){
const markerMatch = INTERCEPTION_ROUTE_MARKERS.find((m)=>segment.startsWith(m));
const paramMatches = segment.match(PARAMETER_PATTERN) // Check for parameters
;
if (markerMatch && paramMatches && paramMatches[2]) {
const { key, optional, repeat } = parseMatchedParameter(paramMatches[2]);
groups[key] = {
pos: groupIndex++,
repeat,
optional
};
segments.push("/" + escapeStringRegexp(markerMatch) + "([^/]+?)");
} else if (paramMatches && paramMatches[2]) {
const { key, repeat, optional } = parseMatchedParameter(paramMatches[2]);
groups[key] = {
pos: groupIndex++,
repeat,
optional
};
if (includePrefix && paramMatches[1]) {
segments.push("/" + escapeStringRegexp(paramMatches[1]));
}
let s = repeat ? optional ? '(?:/(.+?))?' : '/(.+?)' : '/([^/]+?)';
// Remove the leading slash if includePrefix already added it.
if (includePrefix && paramMatches[1]) {
s = s.substring(1);
}
segments.push(s);
} else {
segments.push("/" + escapeStringRegexp(segment));
}
// If there's a suffix, add it to the segments if it's enabled.
if (includeSuffix && paramMatches && paramMatches[3]) {
segments.push(escapeStringRegexp(paramMatches[3]));
}
}
return {
parameterizedRoute: segments.join(''),
groups
};
}
/**
* From a normalized route this function generates a regular expression and
* a corresponding groups object intended to be used to store matching groups
* from the regular expression.
*/ export function getRouteRegex(normalizedRoute, param) {
let { includeSuffix = false, includePrefix = false, excludeOptionalTrailingSlash = false } = param === void 0 ? {} : param;
const { parameterizedRoute, groups } = getParametrizedRoute(normalizedRoute, includeSuffix, includePrefix);
let re = parameterizedRoute;
if (!excludeOptionalTrailingSlash) {
re += '(?:/)?';
}
return {
re: new RegExp("^" + re + "$"),
groups: groups
};
}
/**
* Builds a function to generate a minimal routeKey using only a-z and minimal
* number of characters.
*/ function buildGetSafeRouteKey() {
let i = 0;
return ()=>{
let routeKey = '';
let j = ++i;
while(j > 0){
routeKey += String.fromCharCode(97 + (j - 1) % 26);
j = Math.floor((j - 1) / 26);
}
return routeKey;
};
}
function getSafeKeyFromSegment(param) {
let { interceptionMarker, getSafeRouteKey, segment, routeKeys, keyPrefix, backreferenceDuplicateKeys } = param;
const { key, optional, repeat } = parseMatchedParameter(segment);
// replace any non-word characters since they can break
// the named regex
let cleanedKey = key.replace(/\W/g, '');
if (keyPrefix) {
cleanedKey = "" + keyPrefix + cleanedKey;
}
let invalidKey = false;
// check if the key is still invalid and fallback to using a known
// safe key
if (cleanedKey.length === 0 || cleanedKey.length > 30) {
invalidKey = true;
}
if (!isNaN(parseInt(cleanedKey.slice(0, 1)))) {
invalidKey = true;
}
if (invalidKey) {
cleanedKey = getSafeRouteKey();
}
const duplicateKey = cleanedKey in routeKeys;
if (keyPrefix) {
routeKeys[cleanedKey] = "" + keyPrefix + key;
} else {
routeKeys[cleanedKey] = key;
}
// if the segment has an interception marker, make sure that's part of the regex pattern
// this is to ensure that the route with the interception marker doesn't incorrectly match
// the non-intercepted route (ie /app/(.)[username] should not match /app/[username])
const interceptionPrefix = interceptionMarker ? escapeStringRegexp(interceptionMarker) : '';
let pattern;
if (duplicateKey && backreferenceDuplicateKeys) {
// Use a backreference to the key to ensure that the key is the same value
// in each of the placeholders.
pattern = "\\k<" + cleanedKey + ">";
} else if (repeat) {
pattern = "(?<" + cleanedKey + ">.+?)";
} else {
pattern = "(?<" + cleanedKey + ">[^/]+?)";
}
return optional ? "(?:/" + interceptionPrefix + pattern + ")?" : "/" + interceptionPrefix + pattern;
}
function getNamedParametrizedRoute(route, prefixRouteKeys, includeSuffix, includePrefix, backreferenceDuplicateKeys) {
const getSafeRouteKey = buildGetSafeRouteKey();
const routeKeys = {};
const segments = [];
for (const segment of removeTrailingSlash(route).slice(1).split('/')){
const hasInterceptionMarker = INTERCEPTION_ROUTE_MARKERS.some((m)=>segment.startsWith(m));
const paramMatches = segment.match(PARAMETER_PATTERN) // Check for parameters
;
if (hasInterceptionMarker && paramMatches && paramMatches[2]) {
// If there's an interception marker, add it to the segments.
segments.push(getSafeKeyFromSegment({
getSafeRouteKey,
interceptionMarker: paramMatches[1],
segment: paramMatches[2],
routeKeys,
keyPrefix: prefixRouteKeys ? NEXT_INTERCEPTION_MARKER_PREFIX : undefined,
backreferenceDuplicateKeys
}));
} else if (paramMatches && paramMatches[2]) {
// If there's a prefix, add it to the segments if it's enabled.
if (includePrefix && paramMatches[1]) {
segments.push("/" + escapeStringRegexp(paramMatches[1]));
}
let s = getSafeKeyFromSegment({
getSafeRouteKey,
segment: paramMatches[2],
routeKeys,
keyPrefix: prefixRouteKeys ? NEXT_QUERY_PARAM_PREFIX : undefined,
backreferenceDuplicateKeys
});
// Remove the leading slash if includePrefix already added it.
if (includePrefix && paramMatches[1]) {
s = s.substring(1);
}
segments.push(s);
} else {
segments.push("/" + escapeStringRegexp(segment));
}
// If there's a suffix, add it to the segments if it's enabled.
if (includeSuffix && paramMatches && paramMatches[3]) {
segments.push(escapeStringRegexp(paramMatches[3]));
}
}
return {
namedParameterizedRoute: segments.join(''),
routeKeys
};
}
/**
* This function extends `getRouteRegex` generating also a named regexp where
* each group is named along with a routeKeys object that indexes the assigned
* named group with its corresponding key. When the routeKeys need to be
* prefixed to uniquely identify internally the "prefixRouteKey" arg should
* be "true" currently this is only the case when creating the routes-manifest
* during the build
*/ export function getNamedRouteRegex(normalizedRoute, options) {
var _options_includeSuffix, _options_includePrefix, _options_backreferenceDuplicateKeys;
const result = getNamedParametrizedRoute(normalizedRoute, options.prefixRouteKeys, (_options_includeSuffix = options.includeSuffix) != null ? _options_includeSuffix : false, (_options_includePrefix = options.includePrefix) != null ? _options_includePrefix : false, (_options_backreferenceDuplicateKeys = options.backreferenceDuplicateKeys) != null ? _options_backreferenceDuplicateKeys : false);
let namedRegex = result.namedParameterizedRoute;
if (!options.excludeOptionalTrailingSlash) {
namedRegex += '(?:/)?';
}
return {
...getRouteRegex(normalizedRoute, options),
namedRegex: "^" + namedRegex + "$",
routeKeys: result.routeKeys
};
}
/**
* Generates a named regexp.
* This is intended to be using for build time only.
*/ export function getNamedMiddlewareRegex(normalizedRoute, options) {
const { parameterizedRoute } = getParametrizedRoute(normalizedRoute, false, false);
const { catchAll = true } = options;
if (parameterizedRoute === '/') {
let catchAllRegex = catchAll ? '.*' : '';
return {
namedRegex: "^/" + catchAllRegex + "$"
};
}
const { namedParameterizedRoute } = getNamedParametrizedRoute(normalizedRoute, false, false, false, false);
let catchAllGroupedRegex = catchAll ? '(?:(/.*)?)' : '';
return {
namedRegex: "^" + namedParameterizedRoute + catchAllGroupedRegex + "$"
};
}
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