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normalizePath.js
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normalizePath.js
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'use strict';
const UrlValueParser = require('url-value-parser');
const url = require('url');
// ATTENTION! urlValueParser is a singleton!
let urlValueParser;
module.exports = function(req, opts) {
// originalUrl is taken, because url and path can be changed
// by middlewares such as 'router'. Note: this function is called onFinish
/// i.e. always in the tail of the middleware chain
let path = url.parse(req.originalUrl || req.url).pathname;
const urlPathReplacement = opts ? opts.urlPathReplacement : '#val';
const normalizePath = opts && opts.normalizePath;
if (Array.isArray(normalizePath)) {
for (const tuple of normalizePath) {
if (!Array.isArray(tuple) || tuple.length !== 2) {
throw new Error('Bad tuple provided in normalizePath option, expected: [regex, replacement]');
}
const regex = typeof tuple[0] === 'string' ? RegExp(tuple[0]) : tuple[0];
path = path.replace(regex, tuple[1]);
}
}
if (!urlValueParser) {
urlValueParser = new UrlValueParser(opts && opts.urlValueParser);
}
return urlValueParser.replacePathValues(path, urlPathReplacement);
};