@stencil/router
Version:
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JavaScript
;
const __chunk_4 = require('./chunk-e6311a56.js');
/**
* TS adaption of https://github.com/pillarjs/path-to-regexp/blob/master/index.js
*/
/**
* Default configs.
*/
const DEFAULT_DELIMITER = '/';
const DEFAULT_DELIMITERS = './';
/**
* The main path matching regexp utility.
*/
const PATH_REGEXP = new RegExp([
// Match escaped characters that would otherwise appear in future matches.
// This allows the user to escape special characters that won't transform.
'(\\\\.)',
// Match Express-style parameters and un-named parameters with a prefix
// and optional suffixes. Matches appear as:
//
// "/:test(\\d+)?" => ["/", "test", "\d+", undefined, "?"]
// "/route(\\d+)" => [undefined, undefined, undefined, "\d+", undefined]
'(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?'
].join('|'), 'g');
/**
* Parse a string for the raw tokens.
*/
const parse = (str, options) => {
var tokens = [];
var key = 0;
var index = 0;
var path = '';
var defaultDelimiter = (options && options.delimiter) || DEFAULT_DELIMITER;
var delimiters = (options && options.delimiters) || DEFAULT_DELIMITERS;
var pathEscaped = false;
var res;
while ((res = PATH_REGEXP.exec(str)) !== null) {
var m = res[0];
var escaped = res[1];
var offset = res.index;
path += str.slice(index, offset);
index = offset + m.length;
// Ignore already escaped sequences.
if (escaped) {
path += escaped[1];
pathEscaped = true;
continue;
}
var prev = '';
var next = str[index];
var name = res[2];
var capture = res[3];
var group = res[4];
var modifier = res[5];
if (!pathEscaped && path.length) {
var k = path.length - 1;
if (delimiters.indexOf(path[k]) > -1) {
prev = path[k];
path = path.slice(0, k);
}
}
// Push the current path onto the tokens.
if (path) {
tokens.push(path);
path = '';
pathEscaped = false;
}
var partial = prev !== '' && next !== undefined && next !== prev;
var repeat = modifier === '+' || modifier === '*';
var optional = modifier === '?' || modifier === '*';
var delimiter = prev || defaultDelimiter;
var pattern = capture || group;
tokens.push({
name: name || key++,
prefix: prev,
delimiter: delimiter,
optional: optional,
repeat: repeat,
partial: partial,
pattern: pattern ? escapeGroup(pattern) : '[^' + escapeString(delimiter) + ']+?'
});
}
// Push any remaining characters.
if (path || index < str.length) {
tokens.push(path + str.substr(index));
}
return tokens;
};
/**
* Escape a regular expression string.
*/
const escapeString = (str) => {
return str.replace(/([.+*?=^!:${}()[\]|/\\])/g, '\\$1');
};
/**
* Escape the capturing group by escaping special characters and meaning.
*/
const escapeGroup = (group) => {
return group.replace(/([=!:$/()])/g, '\\$1');
};
/**
* Get the flags for a regexp from the options.
*/
const flags = (options) => {
return options && options.sensitive ? '' : 'i';
};
/**
* Pull out keys from a regexp.
*/
const regexpToRegexp = (path, keys) => {
if (!keys)
return path;
// Use a negative lookahead to match only capturing groups.
var groups = path.source.match(/\((?!\?)/g);
if (groups) {
for (var i = 0; i < groups.length; i++) {
keys.push({
name: i,
prefix: null,
delimiter: null,
optional: false,
repeat: false,
partial: false,
pattern: null
});
}
}
return path;
};
/**
* Transform an array into a regexp.
*/
const arrayToRegexp = (path, keys, options) => {
var parts = [];
for (var i = 0; i < path.length; i++) {
parts.push(pathToRegexp(path[i], keys, options).source);
}
return new RegExp('(?:' + parts.join('|') + ')', flags(options));
};
/**
* Create a path regexp from string input.
*/
const stringToRegexp = (path, keys, options) => {
return tokensToRegExp(parse(path, options), keys, options);
};
/**
* Expose a function for taking tokens and returning a RegExp.
*/
const tokensToRegExp = (tokens, keys, options) => {
options = options || {};
var strict = options.strict;
var end = options.end !== false;
var delimiter = escapeString(options.delimiter || DEFAULT_DELIMITER);
var delimiters = options.delimiters || DEFAULT_DELIMITERS;
var endsWith = [].concat(options.endsWith || []).map(escapeString).concat('$').join('|');
var route = '';
var isEndDelimited = false;
// Iterate over the tokens and create our regexp string.
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];
if (typeof token === 'string') {
route += escapeString(token);
isEndDelimited = i === tokens.length - 1 && delimiters.indexOf(token[token.length - 1]) > -1;
}
else {
var prefix = escapeString(token.prefix || '');
var capture = token.repeat
? '(?:' + token.pattern + ')(?:' + prefix + '(?:' + token.pattern + '))*'
: token.pattern;
if (keys)
keys.push(token);
if (token.optional) {
if (token.partial) {
route += prefix + '(' + capture + ')?';
}
else {
route += '(?:' + prefix + '(' + capture + '))?';
}
}
else {
route += prefix + '(' + capture + ')';
}
}
}
if (end) {
if (!strict)
route += '(?:' + delimiter + ')?';
route += endsWith === '$' ? '$' : '(?=' + endsWith + ')';
}
else {
if (!strict)
route += '(?:' + delimiter + '(?=' + endsWith + '))?';
if (!isEndDelimited)
route += '(?=' + delimiter + '|' + endsWith + ')';
}
return new RegExp('^' + route, flags(options));
};
/**
* Normalize the given path string, returning a regular expression.
*
* An empty array can be passed in for the keys, which will hold the
* placeholder key descriptions. For example, using `/user/:id`, `keys` will
* contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.
*/
const pathToRegexp = (path, keys, options) => {
if (path instanceof RegExp) {
return regexpToRegexp(path, keys);
}
if (Array.isArray(path)) {
return arrayToRegexp(path, keys, options);
}
return stringToRegexp(path, keys, options);
};
let cacheCount = 0;
const patternCache = {};
const cacheLimit = 10000;
// Memoized function for creating the path match regex
const compilePath = (pattern, options) => {
const cacheKey = `${options.end}${options.strict}`;
const cache = patternCache[cacheKey] || (patternCache[cacheKey] = {});
const cachePattern = JSON.stringify(pattern);
if (cache[cachePattern]) {
return cache[cachePattern];
}
const keys = [];
const re = pathToRegexp(pattern, keys, options);
const compiledPattern = { re, keys };
if (cacheCount < cacheLimit) {
cache[cachePattern] = compiledPattern;
cacheCount += 1;
}
return compiledPattern;
};
/**
* Public API for matching a URL pathname to a path pattern.
*/
const matchPath = (pathname, options = {}) => {
if (typeof options === 'string') {
options = { path: options };
}
const { path = '/', exact = false, strict = false } = options;
const { re, keys } = compilePath(path, { end: exact, strict });
const match = re.exec(pathname);
if (!match) {
return null;
}
const [url, ...values] = match;
const isExact = pathname === url;
if (exact && !isExact) {
return null;
}
return {
path,
url: path === '/' && url === '' ? '/' : url,
isExact,
params: keys.reduce((memo, key, index) => {
memo[key.name] = values[index];
return memo;
}, {})
};
};
const matchesAreEqual = (a, b) => {
if (a == null && b == null) {
return true;
}
if (b == null) {
return false;
}
return a && b &&
a.path === b.path &&
a.url === b.url &&
__chunk_4.valueEqual(a.params, b.params);
};
exports.matchPath = matchPath;
exports.matchesAreEqual = matchesAreEqual;