source: trip-planner-front/node_modules/path-to-regexp/index.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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Line 
1/**
2 * Expose `pathtoRegexp`.
3 */
4
5module.exports = pathtoRegexp;
6
7/**
8 * Match matching groups in a regular expression.
9 */
10var MATCHING_GROUP_REGEXP = /\((?!\?)/g;
11
12/**
13 * Normalize the given path string,
14 * returning a regular expression.
15 *
16 * An empty array should be passed,
17 * which will contain the placeholder
18 * key names. For example "/user/:id" will
19 * then contain ["id"].
20 *
21 * @param {String|RegExp|Array} path
22 * @param {Array} keys
23 * @param {Object} options
24 * @return {RegExp}
25 * @api private
26 */
27
28function pathtoRegexp(path, keys, options) {
29 options = options || {};
30 keys = keys || [];
31 var strict = options.strict;
32 var end = options.end !== false;
33 var flags = options.sensitive ? '' : 'i';
34 var extraOffset = 0;
35 var keysOffset = keys.length;
36 var i = 0;
37 var name = 0;
38 var m;
39
40 if (path instanceof RegExp) {
41 while (m = MATCHING_GROUP_REGEXP.exec(path.source)) {
42 keys.push({
43 name: name++,
44 optional: false,
45 offset: m.index
46 });
47 }
48
49 return path;
50 }
51
52 if (Array.isArray(path)) {
53 // Map array parts into regexps and return their source. We also pass
54 // the same keys and options instance into every generation to get
55 // consistent matching groups before we join the sources together.
56 path = path.map(function (value) {
57 return pathtoRegexp(value, keys, options).source;
58 });
59
60 return new RegExp('(?:' + path.join('|') + ')', flags);
61 }
62
63 path = ('^' + path + (strict ? '' : path[path.length - 1] === '/' ? '?' : '/?'))
64 .replace(/\/\(/g, '/(?:')
65 .replace(/([\/\.])/g, '\\$1')
66 .replace(/(\\\/)?(\\\.)?:(\w+)(\(.*?\))?(\*)?(\?)?/g, function (match, slash, format, key, capture, star, optional, offset) {
67 slash = slash || '';
68 format = format || '';
69 capture = capture || '([^\\/' + format + ']+?)';
70 optional = optional || '';
71
72 keys.push({
73 name: key,
74 optional: !!optional,
75 offset: offset + extraOffset
76 });
77
78 var result = ''
79 + (optional ? '' : slash)
80 + '(?:'
81 + format + (optional ? slash : '') + capture
82 + (star ? '((?:[\\/' + format + '].+?)?)' : '')
83 + ')'
84 + optional;
85
86 extraOffset += result.length - match.length;
87
88 return result;
89 })
90 .replace(/\*/g, function (star, index) {
91 var len = keys.length
92
93 while (len-- > keysOffset && keys[len].offset > index) {
94 keys[len].offset += 3; // Replacement length minus asterisk length.
95 }
96
97 return '(.*)';
98 });
99
100 // This is a workaround for handling unnamed matching groups.
101 while (m = MATCHING_GROUP_REGEXP.exec(path)) {
102 var escapeCount = 0;
103 var index = m.index;
104
105 while (path.charAt(--index) === '\\') {
106 escapeCount++;
107 }
108
109 // It's possible to escape the bracket.
110 if (escapeCount % 2 === 1) {
111 continue;
112 }
113
114 if (keysOffset + i === keys.length || keys[keysOffset + i].offset > m.index) {
115 keys.splice(keysOffset + i, 0, {
116 name: name++, // Unnamed matching groups must be consistently linear.
117 optional: false,
118 offset: m.index
119 });
120 }
121
122 i++;
123 }
124
125 // If the path is non-ending, match until the end or a slash.
126 path += (end ? '$' : (path[path.length - 1] === '/' ? '' : '(?=\\/|$)'));
127
128 return new RegExp(path, flags);
129};
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