@loopback/rest
Version:
Expose controllers as REST endpoints and route REST API requests to controller methods
75 lines • 2.3 kB
JavaScript
;
// Copyright IBM Corp. and LoopBack contributors 2018,2020. All Rights Reserved.
// Node module: @loopback/rest
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.compareRoute = void 0;
const path_to_regexp_1 = require("path-to-regexp");
/**
* Sorting order for http verbs
*/
const HTTP_VERBS = {
post: 1,
put: 2,
patch: 3,
get: 4,
head: 5,
delete: 6,
options: 7,
};
/**
* Compare two routes by verb/path for sorting
* @param route1 - First route entry
* @param route2 - Second route entry
*/
function compareRoute(route1, route2) {
// First check the path tokens
const path1 = route1.path.replace(/{([^}]*)}(\/|$)/g, ':$1$2');
const path2 = route2.path.replace(/{([^}]*)}(\/|$)/g, ':$1$2');
const tokensForPath1 = toTokens(path1);
const tokensForPath2 = toTokens(path2);
const length = tokensForPath1.length > tokensForPath2.length
? tokensForPath1.length
: tokensForPath2.length;
for (let i = 0; i < length; i++) {
const token1 = tokensForPath1[i];
const token2 = tokensForPath2[i];
if (token1 === token2)
continue;
if (token1 === undefined)
return 1;
if (token2 === undefined)
return -1;
if (token1 < token2)
return -1;
if (token1 > token2)
return 1;
}
// Then check verb
const verb1 = HTTP_VERBS[route1.verb.toLowerCase()] || HTTP_VERBS.get;
const verb2 = HTTP_VERBS[route2.verb.toLowerCase()] || HTTP_VERBS.get;
if (verb1 !== verb2)
return verb1 - verb2;
return 0;
}
exports.compareRoute = compareRoute;
/**
*
* @param path - Parse a path template into tokens
*/
function toTokens(path) {
const tokens = [];
(0, path_to_regexp_1.parse)(path).forEach(p => {
if (typeof p === 'string') {
// The string can be /orders/count
tokens.push(...p.split('/').filter(Boolean));
}
else {
// Use `{}` for wildcard as they are larger than any other ascii chars
tokens.push(`{}`);
}
});
return tokens;
}
//# sourceMappingURL=route-sort.js.map