George Kalpakas
47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
'use strict';
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/* global routeToRegExp: true */
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/**
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* @param {string} path - The path to parse. (It is assumed to have query and hash stripped off.)
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* @param {Object} opts - Options.
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* @return {Object} - An object containing an array of path parameter names (`keys`) and a regular
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* expression (`regexp`) that can be used to identify a matching URL and extract the path
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* parameter values.
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*
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* @description
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* Parses the given path, extracting path parameter names and a regular expression to match URLs.
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*
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* Originally inspired by `pathRexp` in `visionmedia/express/lib/utils.js`.
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*/
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function routeToRegExp(path, opts) {
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var keys = [];
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var pattern = path
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.replace(/([().])/g, '\\$1')
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.replace(/(\/)?:(\w+)(\*\?|[?*])?/g, function(_, slash, key, option) {
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var optional = option === '?' || option === '*?';
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var star = option === '*' || option === '*?';
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keys.push({name: key, optional: optional});
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slash = slash || '';
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return (
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(optional ? '(?:' + slash : slash + '(?:') +
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(star ? '(.+?)' : '([^/]+)') +
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(optional ? '?)?' : ')')
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);
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})
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.replace(/([/$*])/g, '\\$1');
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if (opts.ignoreTrailingSlashes) {
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pattern = pattern.replace(/\/+$/, '') + '/*';
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}
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return {
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keys: keys,
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regexp: new RegExp(
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'^' + pattern + '(?:[?#]|$)',
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opts.caseInsensitiveMatch ? 'i' : ''
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)
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};
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}
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