to-regexp/lib/index.js

Convert globs, strings, and arrays to a single RegExp.

// Generated by CoffeeScript 1.10.0
var endOfRegExp, globToRegExp, isArray, isRegExp, isRegExpString, isString, stringToRegExp, toRegExp;

globToRegExp = require('glob-to-regexp');

isArray = require('is-array');

isRegExp = require('is-regexp');

isString = require('is-string');

endOfRegExp = /\/([gimy]+)?$/;

isRegExpString = function(s) {
  return (s.charAt(0)) === '/' && (endOfRegExp.test(s));
};

stringToRegExp = function(s) {
  var flags, index, match;
  match = endOfRegExp.exec(s);
  flags = match[1];
  index = match.index;
  return new RegExp(s.substring(1, index), flags);
};

toRegExp = function(s) {
  s = s.trim();
  if (!s) {
    return;
  }
  if (isRegExpString(s)) {
    return stringToRegExp(s);
  } else {
    return globToRegExp(s, {
      extended: true
    });
  }
};

module.exports = function(patterns, opts) {
  var i, len, pattern, re, regexps;
  if (opts == null) {
    opts = {};
  }
  if (isString(patterns)) {
    return toRegExp(patterns);
  }
  if (isRegExp(patterns)) {
    return patterns;
  }
  if (patterns == null) {
    return;
  }
  if (!isArray(patterns)) {
    throw new Error("Expected Array, RegExp or String found '" + patterns + "'");
  }
  regexps = [];
  for (i = 0, len = patterns.length; i < len; i++) {
    pattern = patterns[i];
    if (isString(pattern)) {
      if (pattern.trim()) {
        regexps.push(toRegExp(pattern));
      }
    } else if (isRegExp(pattern)) {
      regexps.push(pattern);
    } else {
      throw new Error("Expected RegExp or String found '" + pattern + "'");
    }
  }
  if (!(regexps.length > 0)) {
    return;
  }
  return new RegExp(((function() {
    var j, len1, results;
    results = [];
    for (j = 0, len1 = regexps.length; j < len1; j++) {
      re = regexps[j];
      results.push(re.source);
    }
    return results;
  })()).join('|'));
};

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