devsite/node_modules/path-to-regexp/dist.es2015/index.js

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/**
* Tokenize input string.
*/
function lexer(str) {
var tokens = [];
var i = 0;
while (i < str.length) {
var char = str[i];
if (char === "*" || char === "+" || char === "?") {
tokens.push({ type: "MODIFIER", index: i, value: str[i++] });
continue;
}
if (char === "\\") {
tokens.push({ type: "ESCAPED_CHAR", index: i++, value: str[i++] });
continue;
}
if (char === "{") {
tokens.push({ type: "OPEN", index: i, value: str[i++] });
continue;
}
if (char === "}") {
tokens.push({ type: "CLOSE", index: i, value: str[i++] });
continue;
}
if (char === ":") {
var name = "";
var j = i + 1;
while (j < str.length) {
var code = str.charCodeAt(j);
if (
// `0-9`
(code >= 48 && code <= 57) ||
// `A-Z`
(code >= 65 && code <= 90) ||
// `a-z`
(code >= 97 && code <= 122) ||
// `_`
code === 95) {
name += str[j++];
continue;
}
break;
}
if (!name)
throw new TypeError("Missing parameter name at ".concat(i));
tokens.push({ type: "NAME", index: i, value: name });
i = j;
continue;
}
if (char === "(") {
var count = 1;
var pattern = "";
var j = i + 1;
if (str[j] === "?") {
throw new TypeError("Pattern cannot start with \"?\" at ".concat(j));
}
while (j < str.length) {
if (str[j] === "\\") {
pattern += str[j++] + str[j++];
continue;
}
if (str[j] === ")") {
count--;
if (count === 0) {
j++;
break;
}
}
else if (str[j] === "(") {
count++;
if (str[j + 1] !== "?") {
throw new TypeError("Capturing groups are not allowed at ".concat(j));
}
}
pattern += str[j++];
}
if (count)
throw new TypeError("Unbalanced pattern at ".concat(i));
if (!pattern)
throw new TypeError("Missing pattern at ".concat(i));
tokens.push({ type: "PATTERN", index: i, value: pattern });
i = j;
continue;
}
tokens.push({ type: "CHAR", index: i, value: str[i++] });
}
tokens.push({ type: "END", index: i, value: "" });
return tokens;
}
/**
* Parse a string for the raw tokens.
*/
export function parse(str, options) {
if (options === void 0) { options = {}; }
var tokens = lexer(str);
var _a = options.prefixes, prefixes = _a === void 0 ? "./" : _a;
var defaultPattern = "[^".concat(escapeString(options.delimiter || "/#?"), "]+?");
var result = [];
var key = 0;
var i = 0;
var path = "";
var tryConsume = function (type) {
if (i < tokens.length && tokens[i].type === type)
return tokens[i++].value;
};
var mustConsume = function (type) {
var value = tryConsume(type);
if (value !== undefined)
return value;
var _a = tokens[i], nextType = _a.type, index = _a.index;
throw new TypeError("Unexpected ".concat(nextType, " at ").concat(index, ", expected ").concat(type));
};
var consumeText = function () {
var result = "";
var value;
while ((value = tryConsume("CHAR") || tryConsume("ESCAPED_CHAR"))) {
result += value;
}
return result;
};
while (i < tokens.length) {
var char = tryConsume("CHAR");
var name = tryConsume("NAME");
var pattern = tryConsume("PATTERN");
if (name || pattern) {
var prefix = char || "";
if (prefixes.indexOf(prefix) === -1) {
path += prefix;
prefix = "";
}
if (path) {
result.push(path);
path = "";
}
result.push({
name: name || key++,
prefix: prefix,
suffix: "",
pattern: pattern || defaultPattern,
modifier: tryConsume("MODIFIER") || "",
});
continue;
}
var value = char || tryConsume("ESCAPED_CHAR");
if (value) {
path += value;
continue;
}
if (path) {
result.push(path);
path = "";
}
var open = tryConsume("OPEN");
if (open) {
var prefix = consumeText();
var name_1 = tryConsume("NAME") || "";
var pattern_1 = tryConsume("PATTERN") || "";
var suffix = consumeText();
mustConsume("CLOSE");
result.push({
name: name_1 || (pattern_1 ? key++ : ""),
pattern: name_1 && !pattern_1 ? defaultPattern : pattern_1,
prefix: prefix,
suffix: suffix,
modifier: tryConsume("MODIFIER") || "",
});
continue;
}
mustConsume("END");
}
return result;
}
/**
* Compile a string to a template function for the path.
*/
export function compile(str, options) {
return tokensToFunction(parse(str, options), options);
}
/**
* Expose a method for transforming tokens into the path function.
*/
export function tokensToFunction(tokens, options) {
if (options === void 0) { options = {}; }
var reFlags = flags(options);
var _a = options.encode, encode = _a === void 0 ? function (x) { return x; } : _a, _b = options.validate, validate = _b === void 0 ? true : _b;
// Compile all the tokens into regexps.
var matches = tokens.map(function (token) {
if (typeof token === "object") {
return new RegExp("^(?:".concat(token.pattern, ")$"), reFlags);
}
});
return function (data) {
var path = "";
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];
if (typeof token === "string") {
path += token;
continue;
}
var value = data ? data[token.name] : undefined;
var optional = token.modifier === "?" || token.modifier === "*";
var repeat = token.modifier === "*" || token.modifier === "+";
if (Array.isArray(value)) {
if (!repeat) {
throw new TypeError("Expected \"".concat(token.name, "\" to not repeat, but got an array"));
}
if (value.length === 0) {
if (optional)
continue;
throw new TypeError("Expected \"".concat(token.name, "\" to not be empty"));
}
for (var j = 0; j < value.length; j++) {
var segment = encode(value[j], token);
if (validate && !matches[i].test(segment)) {
throw new TypeError("Expected all \"".concat(token.name, "\" to match \"").concat(token.pattern, "\", but got \"").concat(segment, "\""));
}
path += token.prefix + segment + token.suffix;
}
continue;
}
if (typeof value === "string" || typeof value === "number") {
var segment = encode(String(value), token);
if (validate && !matches[i].test(segment)) {
throw new TypeError("Expected \"".concat(token.name, "\" to match \"").concat(token.pattern, "\", but got \"").concat(segment, "\""));
}
path += token.prefix + segment + token.suffix;
continue;
}
if (optional)
continue;
var typeOfMessage = repeat ? "an array" : "a string";
throw new TypeError("Expected \"".concat(token.name, "\" to be ").concat(typeOfMessage));
}
return path;
};
}
/**
* Create path match function from `path-to-regexp` spec.
*/
export function match(str, options) {
var keys = [];
var re = pathToRegexp(str, keys, options);
return regexpToFunction(re, keys, options);
}
/**
* Create a path match function from `path-to-regexp` output.
*/
export function regexpToFunction(re, keys, options) {
if (options === void 0) { options = {}; }
var _a = options.decode, decode = _a === void 0 ? function (x) { return x; } : _a;
return function (pathname) {
var m = re.exec(pathname);
if (!m)
return false;
var path = m[0], index = m.index;
var params = Object.create(null);
var _loop_1 = function (i) {
if (m[i] === undefined)
return "continue";
var key = keys[i - 1];
if (key.modifier === "*" || key.modifier === "+") {
params[key.name] = m[i].split(key.prefix + key.suffix).map(function (value) {
return decode(value, key);
});
}
else {
params[key.name] = decode(m[i], key);
}
};
for (var i = 1; i < m.length; i++) {
_loop_1(i);
}
return { path: path, index: index, params: params };
};
}
/**
* Escape a regular expression string.
*/
function escapeString(str) {
return str.replace(/([.+*?=^!:${}()[\]|/\\])/g, "\\$1");
}
/**
* Get the flags for a regexp from the options.
*/
function flags(options) {
return options && options.sensitive ? "" : "i";
}
/**
* Pull out keys from a regexp.
*/
function regexpToRegexp(path, keys) {
if (!keys)
return path;
var groupsRegex = /\((?:\?<(.*?)>)?(?!\?)/g;
var index = 0;
var execResult = groupsRegex.exec(path.source);
while (execResult) {
keys.push({
// Use parenthesized substring match if available, index otherwise
name: execResult[1] || index++,
prefix: "",
suffix: "",
modifier: "",
pattern: "",
});
execResult = groupsRegex.exec(path.source);
}
return path;
}
/**
* Transform an array into a regexp.
*/
function arrayToRegexp(paths, keys, options) {
var parts = paths.map(function (path) { return pathToRegexp(path, keys, options).source; });
return new RegExp("(?:".concat(parts.join("|"), ")"), flags(options));
}
/**
* Create a path regexp from string input.
*/
function stringToRegexp(path, keys, options) {
return tokensToRegexp(parse(path, options), keys, options);
}
/**
* Expose a function for taking tokens and returning a RegExp.
*/
export function tokensToRegexp(tokens, keys, options) {
if (options === void 0) { options = {}; }
var _a = options.strict, strict = _a === void 0 ? false : _a, _b = options.start, start = _b === void 0 ? true : _b, _c = options.end, end = _c === void 0 ? true : _c, _d = options.encode, encode = _d === void 0 ? function (x) { return x; } : _d, _e = options.delimiter, delimiter = _e === void 0 ? "/#?" : _e, _f = options.endsWith, endsWith = _f === void 0 ? "" : _f;
var endsWithRe = "[".concat(escapeString(endsWith), "]|$");
var delimiterRe = "[".concat(escapeString(delimiter), "]");
var route = start ? "^" : "";
// Iterate over the tokens and create our regexp string.
for (var _i = 0, tokens_1 = tokens; _i < tokens_1.length; _i++) {
var token = tokens_1[_i];
if (typeof token === "string") {
route += escapeString(encode(token));
}
else {
var prefix = escapeString(encode(token.prefix));
var suffix = escapeString(encode(token.suffix));
if (token.pattern) {
if (keys)
keys.push(token);
if (prefix || suffix) {
if (token.modifier === "+" || token.modifier === "*") {
var mod = token.modifier === "*" ? "?" : "";
route += "(?:".concat(prefix, "((?:").concat(token.pattern, ")(?:").concat(suffix).concat(prefix, "(?:").concat(token.pattern, "))*)").concat(suffix, ")").concat(mod);
}
else {
route += "(?:".concat(prefix, "(").concat(token.pattern, ")").concat(suffix, ")").concat(token.modifier);
}
}
else {
if (token.modifier === "+" || token.modifier === "*") {
route += "((?:".concat(token.pattern, ")").concat(token.modifier, ")");
}
else {
route += "(".concat(token.pattern, ")").concat(token.modifier);
}
}
}
else {
route += "(?:".concat(prefix).concat(suffix, ")").concat(token.modifier);
}
}
}
if (end) {
if (!strict)
route += "".concat(delimiterRe, "?");
route += !options.endsWith ? "$" : "(?=".concat(endsWithRe, ")");
}
else {
var endToken = tokens[tokens.length - 1];
var isEndDelimited = typeof endToken === "string"
? delimiterRe.indexOf(endToken[endToken.length - 1]) > -1
: endToken === undefined;
if (!strict) {
route += "(?:".concat(delimiterRe, "(?=").concat(endsWithRe, "))?");
}
if (!isEndDelimited) {
route += "(?=".concat(delimiterRe, "|").concat(endsWithRe, ")");
}
}
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 }]`.
*/
export function 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);
}
//# sourceMappingURL=index.js.map