rudy-match-path
Version:
link to URL path matching borrowed from React Router
621 lines (522 loc) • 16.9 kB
JavaScript
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/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.compileParamsToPath = exports.compilePath = undefined;
var _pathToRegexp = __webpack_require__(1);
var _pathToRegexp2 = _interopRequireDefault(_pathToRegexp);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _toArray(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
var patternCache = {};
var cacheLimit = 10000;
var cacheCount = 0;
var compilePath = exports.compilePath = function compilePath(pattern) {
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var _options$end = options.end,
end = _options$end === undefined ? true : _options$end,
_options$strict = options.strict,
strict = _options$strict === undefined ? false : _options$strict;
var cacheKey = '' + (end ? 't' : 'f') + (strict ? 't' : 'f');
var cache = patternCache[cacheKey] || (patternCache[cacheKey] = {});
if (cache[pattern]) return cache[pattern];
var keys = [];
var re = (0, _pathToRegexp2.default)(pattern, keys, options);
var compiledPattern = { re: re, keys: keys };
if (cacheCount < cacheLimit) {
cache[pattern] = compiledPattern;
cacheCount++;
}
return compiledPattern;
};
var toPathCache = {};
var compileParamsToPath = exports.compileParamsToPath = function compileParamsToPath(path) {
var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var toPath = toPathCache[path] || _pathToRegexp2.default.compile(path);
toPathCache[path] = toPath;
return toPath(params);
};
var matchPath = function matchPath(pathname) {
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
if (typeof options === 'string') {
options = { path: options, exact: false, strict: false };
}
var _options = options,
_options$path = _options.path,
path = _options$path === undefined ? '/' : _options$path,
_options$exact = _options.exact,
exact = _options$exact === undefined ? false : _options$exact,
_options$strict2 = _options.strict,
strict = _options$strict2 === undefined ? false : _options$strict2;
var _compilePath = compilePath(path, { end: exact, strict: strict }),
re = _compilePath.re,
keys = _compilePath.keys;
var match = re.exec(pathname);
if (!match) return null;
var _match = _toArray(match),
url = _match[0],
values = _match.slice(1);
var isExact = pathname === url;
if (exact && !isExact) return null;
return {
path: path, // the path pattern used to match
url: path === '/' && url === '' ? '/' : url, // the matched portion of the URL
isExact: isExact, // whether or not we matched exactly
params: keys.reduce(function (memo, key, index) {
memo[key.name] = values[index];
return memo;
}, {})
};
};
exports.default = matchPath;
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
var isarray = __webpack_require__(2)
/**
* Expose `pathToRegexp`.
*/
module.exports = pathToRegexp
module.exports.parse = parse
module.exports.compile = compile
module.exports.tokensToFunction = tokensToFunction
module.exports.tokensToRegExp = tokensToRegExp
/**
* The main path matching regexp utility.
*
* @type {RegExp}
*/
var 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, "?", undefined]
// "/route(\\d+)" => [undefined, undefined, undefined, "\d+", undefined, undefined]
// "/*" => ["/", undefined, undefined, undefined, undefined, "*"]
'([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?|(\\*))'
].join('|'), 'g')
/**
* Parse a string for the raw tokens.
*
* @param {string} str
* @param {Object=} options
* @return {!Array}
*/
function parse (str, options) {
var tokens = []
var key = 0
var index = 0
var path = ''
var defaultDelimiter = options && options.delimiter || '/'
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]
continue
}
var next = str[index]
var prefix = res[2]
var name = res[3]
var capture = res[4]
var group = res[5]
var modifier = res[6]
var asterisk = res[7]
// Push the current path onto the tokens.
if (path) {
tokens.push(path)
path = ''
}
var partial = prefix != null && next != null && next !== prefix
var repeat = modifier === '+' || modifier === '*'
var optional = modifier === '?' || modifier === '*'
var delimiter = res[2] || defaultDelimiter
var pattern = capture || group
tokens.push({
name: name || key++,
prefix: prefix || '',
delimiter: delimiter,
optional: optional,
repeat: repeat,
partial: partial,
asterisk: !!asterisk,
pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')
})
}
// Match any characters still remaining.
if (index < str.length) {
path += str.substr(index)
}
// If the path exists, push it onto the end.
if (path) {
tokens.push(path)
}
return tokens
}
/**
* Compile a string to a template function for the path.
*
* @param {string} str
* @param {Object=} options
* @return {!function(Object=, Object=)}
*/
function compile (str, options) {
return tokensToFunction(parse(str, options))
}
/**
* Prettier encoding of URI path segments.
*
* @param {string}
* @return {string}
*/
function encodeURIComponentPretty (str) {
return encodeURI(str).replace(/[\/?#]/g, function (c) {
return '%' + c.charCodeAt(0).toString(16).toUpperCase()
})
}
/**
* Encode the asterisk parameter. Similar to `pretty`, but allows slashes.
*
* @param {string}
* @return {string}
*/
function encodeAsterisk (str) {
return encodeURI(str).replace(/[?#]/g, function (c) {
return '%' + c.charCodeAt(0).toString(16).toUpperCase()
})
}
/**
* Expose a method for transforming tokens into the path function.
*/
function tokensToFunction (tokens) {
// Compile all the tokens into regexps.
var matches = new Array(tokens.length)
// Compile all the patterns before compilation.
for (var i = 0; i < tokens.length; i++) {
if (typeof tokens[i] === 'object') {
matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$')
}
}
return function (obj, opts) {
var path = ''
var data = obj || {}
var options = opts || {}
var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i]
if (typeof token === 'string') {
path += token
continue
}
var value = data[token.name]
var segment
if (value == null) {
if (token.optional) {
// Prepend partial segment prefixes.
if (token.partial) {
path += token.prefix
}
continue
} else {
throw new TypeError('Expected "' + token.name + '" to be defined')
}
}
if (isarray(value)) {
if (!token.repeat) {
throw new TypeError('Expected "' + token.name + '" to not repeat, but received `' + JSON.stringify(value) + '`')
}
if (value.length === 0) {
if (token.optional) {
continue
} else {
throw new TypeError('Expected "' + token.name + '" to not be empty')
}
}
for (var j = 0; j < value.length; j++) {
segment = encode(value[j])
if (!matches[i].test(segment)) {
throw new TypeError('Expected all "' + token.name + '" to match "' + token.pattern + '", but received `' + JSON.stringify(segment) + '`')
}
path += (j === 0 ? token.prefix : token.delimiter) + segment
}
continue
}
segment = token.asterisk ? encodeAsterisk(value) : encode(value)
if (!matches[i].test(segment)) {
throw new TypeError('Expected "' + token.name + '" to match "' + token.pattern + '", but received "' + segment + '"')
}
path += token.prefix + segment
}
return path
}
}
/**
* Escape a regular expression string.
*
* @param {string} str
* @return {string}
*/
function escapeString (str) {
return str.replace(/([.+*?=^!:${}()[\]|\/\\])/g, '\\$1')
}
/**
* Escape the capturing group by escaping special characters and meaning.
*
* @param {string} group
* @return {string}
*/
function escapeGroup (group) {
return group.replace(/([=!:$\/()])/g, '\\$1')
}
/**
* Attach the keys as a property of the regexp.
*
* @param {!RegExp} re
* @param {Array} keys
* @return {!RegExp}
*/
function attachKeys (re, keys) {
re.keys = keys
return re
}
/**
* Get the flags for a regexp from the options.
*
* @param {Object} options
* @return {string}
*/
function flags (options) {
return options.sensitive ? '' : 'i'
}
/**
* Pull out keys from a regexp.
*
* @param {!RegExp} path
* @param {!Array} keys
* @return {!RegExp}
*/
function regexpToRegexp (path, keys) {
// 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,
asterisk: false,
pattern: null
})
}
}
return attachKeys(path, keys)
}
/**
* Transform an array into a regexp.
*
* @param {!Array} path
* @param {Array} keys
* @param {!Object} options
* @return {!RegExp}
*/
function arrayToRegexp (path, keys, options) {
var parts = []
for (var i = 0; i < path.length; i++) {
parts.push(pathToRegexp(path[i], keys, options).source)
}
var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options))
return attachKeys(regexp, keys)
}
/**
* Create a path regexp from string input.
*
* @param {string} path
* @param {!Array} keys
* @param {!Object} options
* @return {!RegExp}
*/
function stringToRegexp (path, keys, options) {
return tokensToRegExp(parse(path, options), keys, options)
}
/**
* Expose a function for taking tokens and returning a RegExp.
*
* @param {!Array} tokens
* @param {(Array|Object)=} keys
* @param {Object=} options
* @return {!RegExp}
*/
function tokensToRegExp (tokens, keys, options) {
if (!isarray(keys)) {
options = /** @type {!Object} */ (keys || options)
keys = []
}
options = options || {}
var strict = options.strict
var end = options.end !== false
var route = ''
// 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)
} else {
var prefix = escapeString(token.prefix)
var capture = '(?:' + token.pattern + ')'
keys.push(token)
if (token.repeat) {
capture += '(?:' + prefix + capture + ')*'
}
if (token.optional) {
if (!token.partial) {
capture = '(?:' + prefix + '(' + capture + '))?'
} else {
capture = prefix + '(' + capture + ')?'
}
} else {
capture = prefix + '(' + capture + ')'
}
route += capture
}
}
var delimiter = escapeString(options.delimiter || '/')
var endsWithDelimiter = route.slice(-delimiter.length) === delimiter
// In non-strict mode we allow a slash at the end of match. If the path to
// match already ends with a slash, we remove it for consistency. The slash
// is valid at the end of a path match, not in the middle. This is important
// in non-ending mode, where "/test/" shouldn't match "/test//route".
if (!strict) {
route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?'
}
if (end) {
route += '$'
} else {
// In non-ending mode, we need the capturing groups to match as much as
// possible by using a positive lookahead to the end or next path segment.
route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)'
}
return attachKeys(new RegExp('^' + route, flags(options)), keys)
}
/**
* 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 }]`.
*
* @param {(string|RegExp|Array)} path
* @param {(Array|Object)=} keys
* @param {Object=} options
* @return {!RegExp}
*/
function pathToRegexp (path, keys, options) {
if (!isarray(keys)) {
options = /** @type {!Object} */ (keys || options)
keys = []
}
options = options || {}
if (path instanceof RegExp) {
return regexpToRegexp(path, /** @type {!Array} */ (keys))
}
if (isarray(path)) {
return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)
}
return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)
}
/***/ }),
/* 2 */
/***/ (function(module, exports) {
module.exports = Array.isArray || function (arr) {
return Object.prototype.toString.call(arr) == '[object Array]';
};
/***/ })
/******/ ]);
});