Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/string/string.js

Index: tools/telemetry/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/string/string.js
diff --git a/tools/telemetry/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/string/string.js b/tools/telemetry/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/string/string.js
deleted file mode 100644
index 0725d09dec8bed300af7f5021b5381655e465074..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/string/string.js
+++ /dev/null
@@ -1,1242 +0,0 @@
-// Copyright 2006 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Utilities for string manipulation.
- */
-
-
-/**
- * Namespace for string utilities
- */
-goog.provide('goog.string');
-goog.provide('goog.string.Unicode');
-
-
-/**
- * Common Unicode string characters.
- * @enum {string}
- */
-goog.string.Unicode = {
-  NBSP: '\xa0'
-};
-
-
-/**
- * Fast prefix-checker.
- * @param {string} str The string to check.
- * @param {string} prefix A string to look for at the start of {@code str}.
- * @return {boolean} True if {@code str} begins with {@code prefix}.
- */
-goog.string.startsWith = function(str, prefix) {
-  return str.lastIndexOf(prefix, 0) == 0;
-};
-
-
-/**
- * Fast suffix-checker.
- * @param {string} str The string to check.
- * @param {string} suffix A string to look for at the end of {@code str}.
- * @return {boolean} True if {@code str} ends with {@code suffix}.
- */
-goog.string.endsWith = function(str, suffix) {
-  var l = str.length - suffix.length;
-  return l >= 0 && str.indexOf(suffix, l) == l;
-};
-
-
-/**
- * Case-insensitive prefix-checker.
- * @param {string} str The string to check.
- * @param {string} prefix  A string to look for at the end of {@code str}.
- * @return {boolean} True if {@code str} begins with {@code prefix} (ignoring
- *     case).
- */
-goog.string.caseInsensitiveStartsWith = function(str, prefix) {
-  return goog.string.caseInsensitiveCompare(
-      prefix, str.substr(0, prefix.length)) == 0;
-};
-
-
-/**
- * Case-insensitive suffix-checker.
- * @param {string} str The string to check.
- * @param {string} suffix A string to look for at the end of {@code str}.
- * @return {boolean} True if {@code str} ends with {@code suffix} (ignoring
- *     case).
- */
-goog.string.caseInsensitiveEndsWith = function(str, suffix) {
-  return goog.string.caseInsensitiveCompare(
-      suffix, str.substr(str.length - suffix.length, suffix.length)) == 0;
-};
-
-
-/**
- * Does simple python-style string substitution.
- * subs("foo%s hot%s", "bar", "dog") becomes "foobar hotdog".
- * @param {string} str The string containing the pattern.
- * @param {...*} var_args The items to substitute into the pattern.
- * @return {string} A copy of {@code str} in which each occurrence of
- *     {@code %s} has been replaced an argument from {@code var_args}.
- */
-goog.string.subs = function(str, var_args) {
-  // This appears to be slow, but testing shows it compares more or less
-  // equivalent to the regex.exec method.
-  for (var i = 1; i < arguments.length; i++) {
-    // We cast to String in case an argument is a Function.  Replacing $&, for
-    // example, with $$$& stops the replace from subsituting the whole match
-    // into the resultant string.  $$$& in the first replace becomes $$& in the
-    //  second, which leaves $& in the resultant string.  Also:
-    // $$, $`, $', $n $nn
-    var replacement = String(arguments[i]).replace(/\$/g, '$$$$');
-    str = str.replace(/\%s/, replacement);
-  }
-  return str;
-};
-
-
-/**
- * Converts multiple whitespace chars (spaces, non-breaking-spaces, new lines
- * and tabs) to a single space, and strips leading and trailing whitespace.
- * @param {string} str Input string.
- * @return {string} A copy of {@code str} with collapsed whitespace.
- */
-goog.string.collapseWhitespace = function(str) {
-  // Since IE doesn't include non-breaking-space (0xa0) in their \s character
-  // class (as required by section 7.2 of the ECMAScript spec), we explicitly
-  // include it in the regexp to enforce consistent cross-browser behavior.
-  return str.replace(/[\s\xa0]+/g, ' ').replace(/^\s+|\s+$/g, '');
-};
-
-
-/**
- * Checks if a string is empty or contains only whitespaces.
- * @param {string} str The string to check.
- * @return {boolean} True if {@code str} is empty or whitespace only.
- */
-goog.string.isEmpty = function(str) {
-  // testing length == 0 first is actually slower in all browsers (about the
-  // same in Opera).
-  // Since IE doesn't include non-breaking-space (0xa0) in their \s character
-  // class (as required by section 7.2 of the ECMAScript spec), we explicitly
-  // include it in the regexp to enforce consistent cross-browser behavior.
-  return /^[\s\xa0]*$/.test(str);
-};
-
-
-/**
- * Checks if a string is null, empty or contains only whitespaces.
- * @param {*} str The string to check.
- * @return {boolean} True if{@code str} is null, empty, or whitespace only.
- */
-goog.string.isEmptySafe = function(str) {
-  return goog.string.isEmpty(goog.string.makeSafe(str));
-};
-
-
-/**
- * Checks if a string is all breaking whitespace.
- * @param {string} str The string to check.
- * @return {boolean} Whether the string is all breaking whitespace.
- */
-goog.string.isBreakingWhitespace = function(str) {
-  return !/[^\t\n\r ]/.test(str);
-};
-
-
-/**
- * Checks if a string contains all letters.
- * @param {string} str string to check.
- * @return {boolean} True if {@code str} consists entirely of letters.
- */
-goog.string.isAlpha = function(str) {
-  return !/[^a-zA-Z]/.test(str);
-};
-
-
-/**
- * Checks if a string contains only numbers.
- * @param {*} str string to check. If not a string, it will be
- *     casted to one.
- * @return {boolean} True if {@code str} is numeric.
- */
-goog.string.isNumeric = function(str) {
-  return !/[^0-9]/.test(str);
-};
-
-
-/**
- * Checks if a string contains only numbers or letters.
- * @param {string} str string to check.
- * @return {boolean} True if {@code str} is alphanumeric.
- */
-goog.string.isAlphaNumeric = function(str) {
-  return !/[^a-zA-Z0-9]/.test(str);
-};
-
-
-/**
- * Checks if a character is a space character.
- * @param {string} ch Character to check.
- * @return {boolean} True if {code ch} is a space.
- */
-goog.string.isSpace = function(ch) {
-  return ch == ' ';
-};
-
-
-/**
- * Checks if a character is a valid unicode character.
- * @param {string} ch Character to check.
- * @return {boolean} True if {code ch} is a valid unicode character.
- */
-goog.string.isUnicodeChar = function(ch) {
-  return ch.length == 1 && ch >= ' ' && ch <= '~' ||
-         ch >= '\u0080' && ch <= '\uFFFD';
-};
-
-
-/**
- * Takes a string and replaces newlines with a space. Multiple lines are
- * replaced with a single space.
- * @param {string} str The string from which to strip newlines.
- * @return {string} A copy of {@code str} stripped of newlines.
- */
-goog.string.stripNewlines = function(str) {
-  return str.replace(/(\r\n|\r|\n)+/g, ' ');
-};
-
-
-/**
- * Replaces Windows and Mac new lines with unix style: \r or \r\n with \n.
- * @param {string} str The string to in which to canonicalize newlines.
- * @return {string} {@code str} A copy of {@code} with canonicalized newlines.
- */
-goog.string.canonicalizeNewlines = function(str) {
-  return str.replace(/(\r\n|\r|\n)/g, '\n');
-};
-
-
-/**
- * Normalizes whitespace in a string, replacing all whitespace chars with
- * a space.
- * @param {string} str The string in which to normalize whitespace.
- * @return {string} A copy of {@code str} with all whitespace normalized.
- */
-goog.string.normalizeWhitespace = function(str) {
-  return str.replace(/\xa0|\s/g, ' ');
-};
-
-
-/**
- * Normalizes spaces in a string, replacing all consecutive spaces and tabs
- * with a single space. Replaces non-breaking space with a space.
- * @param {string} str The string in which to normalize spaces.
- * @return {string} A copy of {@code str} with all consecutive spaces and tabs
- *    replaced with a single space.
- */
-goog.string.normalizeSpaces = function(str) {
-  return str.replace(/\xa0|[ \t]+/g, ' ');
-};
-
-
-/**
- * Removes the breaking spaces from the left and right of the string and
- * collapses the sequences of breaking spaces in the middle into single spaces.
- * The original and the result strings render the same way in HTML.
- * @param {string} str A string in which to collapse spaces.
- * @return {string} Copy of the string with normalized breaking spaces.
- */
-goog.string.collapseBreakingSpaces = function(str) {
-  return str.replace(/[\t\r\n ]+/g, ' ').replace(
-      /^[\t\r\n ]+|[\t\r\n ]+$/g, '');
-};
-
-
-/**
- * Trims white spaces to the left and right of a string.
- * @param {string} str The string to trim.
- * @return {string} A trimmed copy of {@code str}.
- */
-goog.string.trim = function(str) {
-  // Since IE doesn't include non-breaking-space (0xa0) in their \s character
-  // class (as required by section 7.2 of the ECMAScript spec), we explicitly
-  // include it in the regexp to enforce consistent cross-browser behavior.
-  return str.replace(/^[\s\xa0]+|[\s\xa0]+$/g, '');
-};
-
-
-/**
- * Trims whitespaces at the left end of a string.
- * @param {string} str The string to left trim.
- * @return {string} A trimmed copy of {@code str}.
- */
-goog.string.trimLeft = function(str) {
-  // Since IE doesn't include non-breaking-space (0xa0) in their \s character
-  // class (as required by section 7.2 of the ECMAScript spec), we explicitly
-  // include it in the regexp to enforce consistent cross-browser behavior.
-  return str.replace(/^[\s\xa0]+/, '');
-};
-
-
-/**
- * Trims whitespaces at the right end of a string.
- * @param {string} str The string to right trim.
- * @return {string} A trimmed copy of {@code str}.
- */
-goog.string.trimRight = function(str) {
-  // Since IE doesn't include non-breaking-space (0xa0) in their \s character
-  // class (as required by section 7.2 of the ECMAScript spec), we explicitly
-  // include it in the regexp to enforce consistent cross-browser behavior.
-  return str.replace(/[\s\xa0]+$/, '');
-};
-
-
-/**
- * A string comparator that ignores case.
- * -1 = str1 less than str2
- *  0 = str1 equals str2
- *  1 = str1 greater than str2
- *
- * @param {string} str1 The string to compare.
- * @param {string} str2 The string to compare {@code str1} to.
- * @return {number} The comparator result, as described above.
- */
-goog.string.caseInsensitiveCompare = function(str1, str2) {
-  var test1 = String(str1).toLowerCase();
-  var test2 = String(str2).toLowerCase();
-
-  if (test1 < test2) {
-    return -1;
-  } else if (test1 == test2) {
-    return 0;
-  } else {
-    return 1;
-  }
-};
-
-
-/**
- * Regular expression used for splitting a string into substrings of fractional
- * numbers, integers, and non-numeric characters.
- * @type {RegExp}
- * @private
- */
-goog.string.numerateCompareRegExp_ = /(\.\d+)|(\d+)|(\D+)/g;
-
-
-/**
- * String comparison function that handles numbers in a way humans might expect.
- * Using this function, the string "File 2.jpg" sorts before "File 10.jpg". The
- * comparison is mostly case-insensitive, though strings that are identical
- * except for case are sorted with the upper-case strings before lower-case.
- *
- * This comparison function is significantly slower (about 500x) than either
- * the default or the case-insensitive compare. It should not be used in
- * time-critical code, but should be fast enough to sort several hundred short
- * strings (like filenames) with a reasonable delay.
- *
- * @param {string} str1 The string to compare in a numerically sensitive way.
- * @param {string} str2 The string to compare {@code str1} to.
- * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than
- *     0 if str1 > str2.
- */
-goog.string.numerateCompare = function(str1, str2) {
-  if (str1 == str2) {
-    return 0;
-  }
-  if (!str1) {
-    return -1;
-  }
-  if (!str2) {
-    return 1;
-  }
-
-  // Using match to split the entire string ahead of time turns out to be faster
-  // for most inputs than using RegExp.exec or iterating over each character.
-  var tokens1 = str1.toLowerCase().match(goog.string.numerateCompareRegExp_);
-  var tokens2 = str2.toLowerCase().match(goog.string.numerateCompareRegExp_);
-
-  var count = Math.min(tokens1.length, tokens2.length);
-
-  for (var i = 0; i < count; i++) {
-    var a = tokens1[i];
-    var b = tokens2[i];
-
-    // Compare pairs of tokens, returning if one token sorts before the other.
-    if (a != b) {
-
-      // Only if both tokens are integers is a special comparison required.
-      // Decimal numbers are sorted as strings (e.g., '.09' < '.1').
-      var num1 = parseInt(a, 10);
-      if (!isNaN(num1)) {
-        var num2 = parseInt(b, 10);
-        if (!isNaN(num2) && num1 - num2) {
-          return num1 - num2;
-        }
-      }
-      return a < b ? -1 : 1;
-    }
-  }
-
-  // If one string is a substring of the other, the shorter string sorts first.
-  if (tokens1.length != tokens2.length) {
-    return tokens1.length - tokens2.length;
-  }
-
-  // The two strings must be equivalent except for case (perfect equality is
-  // tested at the head of the function.) Revert to default ASCII-betical string
-  // comparison to stablize the sort.
-  return str1 < str2 ? -1 : 1;
-};
-
-
-/**
- * Regular expression used for determining if a string needs to be encoded.
- * @type {RegExp}
- * @private
- */
-goog.string.encodeUriRegExp_ = /^[a-zA-Z0-9\-_.!~*'()]*$/;
-
-
-/**
- * URL-encodes a string
- * @param {*} str The string to url-encode.
- * @return {string} An encoded copy of {@code str} that is safe for urls.
- *     Note that '#', ':', and other characters used to delimit portions
- *     of URLs *will* be encoded.
- */
-goog.string.urlEncode = function(str) {
-  str = String(str);
-  // Checking if the search matches before calling encodeURIComponent avoids an
-  // extra allocation in IE6. This adds about 10us time in FF and a similiar
-  // over head in IE6 for lower working set apps, but for large working set
-  // apps like Gmail, it saves about 70us per call.
-  if (!goog.string.encodeUriRegExp_.test(str)) {
-    return encodeURIComponent(str);
-  }
-  return str;
-};
-
-
-/**
- * URL-decodes the string. We need to specially handle '+'s because
- * the javascript library doesn't convert them to spaces.
- * @param {string} str The string to url decode.
- * @return {string} The decoded {@code str}.
- */
-goog.string.urlDecode = function(str) {
-  return decodeURIComponent(str.replace(/\+/g, ' '));
-};
-
-
-/**
- * Converts \n to <br>s or <br />s.
- * @param {string} str The string in which to convert newlines.
- * @param {boolean=} opt_xml Whether to use XML compatible tags.
- * @return {string} A copy of {@code str} with converted newlines.
- */
-goog.string.newLineToBr = function(str, opt_xml) {
-  return str.replace(/(\r\n|\r|\n)/g, opt_xml ? '<br />' : '<br>');
-};
-
-
-/**
- * Escape double quote '"' characters in addition to '&', '<', and '>' so that a
- * string can be included in an HTML tag attribute value within double quotes.
- *
- * It should be noted that > doesn't need to be escaped for the HTML or XML to
- * be valid, but it has been decided to escape it for consistency with other
- * implementations.
- *
- * NOTE(user):
- * HtmlEscape is often called during the generation of large blocks of HTML.
- * Using statics for the regular expressions and strings is an optimization
- * that can more than half the amount of time IE spends in this function for
- * large apps, since strings and regexes both contribute to GC allocations.
- *
- * Testing for the presence of a character before escaping increases the number
- * of function calls, but actually provides a speed increase for the average
- * case -- since the average case often doesn't require the escaping of all 4
- * characters and indexOf() is much cheaper than replace().
- * The worst case does suffer slightly from the additional calls, therefore the
- * opt_isLikelyToContainHtmlChars option has been included for situations
- * where all 4 HTML entities are very likely to be present and need escaping.
- *
- * Some benchmarks (times tended to fluctuate +-0.05ms):
- *                                     FireFox                     IE6
- * (no chars / average (mix of cases) / all 4 chars)
- * no checks                     0.13 / 0.22 / 0.22         0.23 / 0.53 / 0.80
- * indexOf                       0.08 / 0.17 / 0.26         0.22 / 0.54 / 0.84
- * indexOf + re test             0.07 / 0.17 / 0.28         0.19 / 0.50 / 0.85
- *
- * An additional advantage of checking if replace actually needs to be called
- * is a reduction in the number of object allocations, so as the size of the
- * application grows the difference between the various methods would increase.
- *
- * @param {string} str string to be escaped.
- * @param {boolean=} opt_isLikelyToContainHtmlChars Don't perform a check to see
- *     if the character needs replacing - use this option if you expect each of
- *     the characters to appear often. Leave false if you expect few html
- *     characters to occur in your strings, such as if you are escaping HTML.
- * @return {string} An escaped copy of {@code str}.
- */
-goog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {
-
-  if (opt_isLikelyToContainHtmlChars) {
-    return str.replace(goog.string.amperRe_, '&amp;')
-          .replace(goog.string.ltRe_, '&lt;')
-          .replace(goog.string.gtRe_, '&gt;')
-          .replace(goog.string.quotRe_, '&quot;');
-
-  } else {
-    // quick test helps in the case when there are no chars to replace, in
-    // worst case this makes barely a difference to the time taken
-    if (!goog.string.allRe_.test(str)) return str;
-
-    // str.indexOf is faster than regex.test in this case
-    if (str.indexOf('&') != -1) {
-      str = str.replace(goog.string.amperRe_, '&amp;');
-    }
-    if (str.indexOf('<') != -1) {
-      str = str.replace(goog.string.ltRe_, '&lt;');
-    }
-    if (str.indexOf('>') != -1) {
-      str = str.replace(goog.string.gtRe_, '&gt;');
-    }
-    if (str.indexOf('"') != -1) {
-      str = str.replace(goog.string.quotRe_, '&quot;');
-    }
-    return str;
-  }
-};
-
-
-/**
- * Regular expression that matches an ampersand, for use in escaping.
- * @type {RegExp}
- * @private
- */
-goog.string.amperRe_ = /&/g;
-
-
-/**
- * Regular expression that matches a less than sign, for use in escaping.
- * @type {RegExp}
- * @private
- */
-goog.string.ltRe_ = /</g;
-
-
-/**
- * Regular expression that matches a greater than sign, for use in escaping.
- * @type {RegExp}
- * @private
- */
-goog.string.gtRe_ = />/g;
-
-
-/**
- * Regular expression that matches a double quote, for use in escaping.
- * @type {RegExp}
- * @private
- */
-goog.string.quotRe_ = /\"/g;
-
-
-/**
- * Regular expression that matches any character that needs to be escaped.
- * @type {RegExp}
- * @private
- */
-goog.string.allRe_ = /[&<>\"]/;
-
-
-/**
- * Unescapes an HTML string.
- *
- * @param {string} str The string to unescape.
- * @return {string} An unescaped copy of {@code str}.
- */
-goog.string.unescapeEntities = function(str) {
-  if (goog.string.contains(str, '&')) {
-    // We are careful not to use a DOM if we do not have one. We use the []
-    // notation so that the JSCompiler will not complain about these objects and
-    // fields in the case where we have no DOM.
-    if ('document' in goog.global) {
-      return goog.string.unescapeEntitiesUsingDom_(str);
-    } else {
-      // Fall back on pure XML entities
-      return goog.string.unescapePureXmlEntities_(str);
-    }
-  }
-  return str;
-};
-
-
-/**
- * Unescapes an HTML string using a DOM to resolve non-XML, non-numeric
- * entities. This function is XSS-safe and whitespace-preserving.
- * @private
- * @param {string} str The string to unescape.
- * @return {string} The unescaped {@code str} string.
- */
-goog.string.unescapeEntitiesUsingDom_ = function(str) {
-  var seen = {'&amp;': '&', '&lt;': '<', '&gt;': '>', '&quot;': '"'};
-  var div = document.createElement('div');
-  // Match as many valid entity characters as possible. If the actual entity
-  // happens to be shorter, it will still work as innerHTML will return the
-  // trailing characters unchanged. Since the entity characters do not include
-  // open angle bracket, there is no chance of XSS from the innerHTML use.
-  // Since no whitespace is passed to innerHTML, whitespace is preserved.
-  return str.replace(goog.string.HTML_ENTITY_PATTERN_, function(s, entity) {
-    // Check for cached entity.
-    var value = seen[s];
-    if (value) {
-      return value;
-    }
-    // Check for numeric entity.
-    if (entity.charAt(0) == '#') {
-      // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex numbers.
-      var n = Number('0' + entity.substr(1));
-      if (!isNaN(n)) {
-        value = String.fromCharCode(n);
-      }
-    }
-    // Fall back to innerHTML otherwise.
-    if (!value) {
-      // Append a non-entity character to avoid a bug in Webkit that parses
-      // an invalid entity at the end of innerHTML text as the empty string.
-      div.innerHTML = s + ' ';
-      // Then remove the trailing character from the result.
-      value = div.firstChild.nodeValue.slice(0, -1);
-    }
-    // Cache and return.
-    return seen[s] = value;
-  });
-};
-
-
-/**
- * Unescapes XML entities.
- * @private
- * @param {string} str The string to unescape.
- * @return {string} An unescaped copy of {@code str}.
- */
-goog.string.unescapePureXmlEntities_ = function(str) {
-  return str.replace(/&([^;]+);/g, function(s, entity) {
-    switch (entity) {
-      case 'amp':
-        return '&';
-      case 'lt':
-        return '<';
-      case 'gt':
-        return '>';
-      case 'quot':
-        return '"';
-      default:
-        if (entity.charAt(0) == '#') {
-          // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex.
-          var n = Number('0' + entity.substr(1));
-          if (!isNaN(n)) {
-            return String.fromCharCode(n);
-          }
-        }
-        // For invalid entities we just return the entity
-        return s;
-    }
-  });
-};
-
-
-/**
- * Regular expression that matches an HTML entity.
- * See also HTML5: Tokenization / Tokenizing character references.
- * @private
- * @type {!RegExp}
- */
-goog.string.HTML_ENTITY_PATTERN_ = /&([^;\s<&]+);?/g;
-
-
-/**
- * Do escaping of whitespace to preserve spatial formatting. We use character
- * entity #160 to make it safer for xml.
- * @param {string} str The string in which to escape whitespace.
- * @param {boolean=} opt_xml Whether to use XML compatible tags.
- * @return {string} An escaped copy of {@code str}.
- */
-goog.string.whitespaceEscape = function(str, opt_xml) {
-  return goog.string.newLineToBr(str.replace(/  /g, ' &#160;'), opt_xml);
-};
-
-
-/**
- * Strip quote characters around a string.  The second argument is a string of
- * characters to treat as quotes.  This can be a single character or a string of
- * multiple character and in that case each of those are treated as possible
- * quote characters. For example:
- *
- * <pre>
- * goog.string.stripQuotes('"abc"', '"`') --> 'abc'
- * goog.string.stripQuotes('`abc`', '"`') --> 'abc'
- * </pre>
- *
- * @param {string} str The string to strip.
- * @param {string} quoteChars The quote characters to strip.
- * @return {string} A copy of {@code str} without the quotes.
- */
-goog.string.stripQuotes = function(str, quoteChars) {
-  var length = quoteChars.length;
-  for (var i = 0; i < length; i++) {
-    var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);
-    if (str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {
-      return str.substring(1, str.length - 1);
-    }
-  }
-  return str;
-};
-
-
-/**
- * Truncates a string to a certain length and adds '...' if necessary.  The
- * length also accounts for the ellipsis, so a maximum length of 10 and a string
- * 'Hello World!' produces 'Hello W...'.
- * @param {string} str The string to truncate.
- * @param {number} chars Max number of characters.
- * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped
- *     characters from being cut off in the middle.
- * @return {string} The truncated {@code str} string.
- */
-goog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.unescapeEntities(str);
-  }
-
-  if (str.length > chars) {
-    str = str.substring(0, chars - 3) + '...';
-  }
-
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.htmlEscape(str);
-  }
-
-  return str;
-};
-
-
-/**
- * Truncate a string in the middle, adding "..." if necessary,
- * and favoring the beginning of the string.
- * @param {string} str The string to truncate the middle of.
- * @param {number} chars Max number of characters.
- * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped
- *     characters from being cutoff in the middle.
- * @param {number=} opt_trailingChars Optional number of trailing characters to
- *     leave at the end of the string, instead of truncating as close to the
- *     middle as possible.
- * @return {string} A truncated copy of {@code str}.
- */
-goog.string.truncateMiddle = function(str, chars,
-    opt_protectEscapedCharacters, opt_trailingChars) {
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.unescapeEntities(str);
-  }
-
-  if (opt_trailingChars && str.length > chars) {
-    if (opt_trailingChars > chars) {
-      opt_trailingChars = chars;
-    }
-    var endPoint = str.length - opt_trailingChars;
-    var startPoint = chars - opt_trailingChars;
-    str = str.substring(0, startPoint) + '...' + str.substring(endPoint);
-  } else if (str.length > chars) {
-    // Favor the beginning of the string:
-    var half = Math.floor(chars / 2);
-    var endPos = str.length - half;
-    half += chars % 2;
-    str = str.substring(0, half) + '...' + str.substring(endPos);
-  }
-
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.htmlEscape(str);
-  }
-
-  return str;
-};
-
-
-/**
- * Special chars that need to be escaped for goog.string.quote.
- * @private
- * @type {Object}
- */
-goog.string.specialEscapeChars_ = {
-  '\0': '\\0',
-  '\b': '\\b',
-  '\f': '\\f',
-  '\n': '\\n',
-  '\r': '\\r',
-  '\t': '\\t',
-  '\x0B': '\\x0B', // '\v' is not supported in JScript
-  '"': '\\"',
-  '\\': '\\\\'
-};
-
-
-/**
- * Character mappings used internally for goog.string.escapeChar.
- * @private
- * @type {Object}
- */
-goog.string.jsEscapeCache_ = {
-  '\'': '\\\''
-};
-
-
-/**
- * Encloses a string in double quotes and escapes characters so that the
- * string is a valid JS string.
- * @param {string} s The string to quote.
- * @return {string} A copy of {@code s} surrounded by double quotes.
- */
-goog.string.quote = function(s) {
-  s = String(s);
-  if (s.quote) {
-    return s.quote();
-  } else {
-    var sb = ['"'];
-    for (var i = 0; i < s.length; i++) {
-      var ch = s.charAt(i);
-      var cc = ch.charCodeAt(0);
-      sb[i + 1] = goog.string.specialEscapeChars_[ch] ||
-          ((cc > 31 && cc < 127) ? ch : goog.string.escapeChar(ch));
-    }
-    sb.push('"');
-    return sb.join('');
-  }
-};
-
-
-/**
- * Takes a string and returns the escaped string for that character.
- * @param {string} str The string to escape.
- * @return {string} An escaped string representing {@code str}.
- */
-goog.string.escapeString = function(str) {
-  var sb = [];
-  for (var i = 0; i < str.length; i++) {
-    sb[i] = goog.string.escapeChar(str.charAt(i));
-  }
-  return sb.join('');
-};
-
-
-/**
- * Takes a character and returns the escaped string for that character. For
- * example escapeChar(String.fromCharCode(15)) -> "\\x0E".
- * @param {string} c The character to escape.
- * @return {string} An escaped string representing {@code c}.
- */
-goog.string.escapeChar = function(c) {
-  if (c in goog.string.jsEscapeCache_) {
-    return goog.string.jsEscapeCache_[c];
-  }
-
-  if (c in goog.string.specialEscapeChars_) {
-    return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c];
-  }
-
-  var rv = c;
-  var cc = c.charCodeAt(0);
-  if (cc > 31 && cc < 127) {
-    rv = c;
-  } else {
-    // tab is 9 but handled above
-    if (cc < 256) {
-      rv = '\\x';
-      if (cc < 16 || cc > 256) {
-        rv += '0';
-      }
-    } else {
-      rv = '\\u';
-      if (cc < 4096) { // \u1000
-        rv += '0';
-      }
-    }
-    rv += cc.toString(16).toUpperCase();
-  }
-
-  return goog.string.jsEscapeCache_[c] = rv;
-};
-
-
-/**
- * Takes a string and creates a map (Object) in which the keys are the
- * characters in the string. The value for the key is set to true. You can
- * then use goog.object.map or goog.array.map to change the values.
- * @param {string} s The string to build the map from.
- * @return {Object} The map of characters used.
- */
-// TODO(arv): It seems like we should have a generic goog.array.toMap. But do
-//            we want a dependency on goog.array in goog.string?
-goog.string.toMap = function(s) {
-  var rv = {};
-  for (var i = 0; i < s.length; i++) {
-    rv[s.charAt(i)] = true;
-  }
-  return rv;
-};
-
-
-/**
- * Checks whether a string contains a given character.
- * @param {string} s The string to test.
- * @param {string} ss The substring to test for.
- * @return {boolean} True if {@code s} contains {@code ss}.
- */
-goog.string.contains = function(s, ss) {
-  return s.indexOf(ss) != -1;
-};
-
-
-/**
- * Removes a substring of a specified length at a specific
- * index in a string.
- * @param {string} s The base string from which to remove.
- * @param {number} index The index at which to remove the substring.
- * @param {number} stringLength The length of the substring to remove.
- * @return {string} A copy of {@code s} with the substring removed or the full
- *     string if nothing is removed or the input is invalid.
- */
-goog.string.removeAt = function(s, index, stringLength) {
-  var resultStr = s;
-  // If the index is greater or equal to 0 then remove substring
-  if (index >= 0 && index < s.length && stringLength > 0) {
-    resultStr = s.substr(0, index) +
-        s.substr(index + stringLength, s.length - index - stringLength);
-  }
-  return resultStr;
-};
-
-
-/**
- *  Removes the first occurrence of a substring from a string.
- *  @param {string} s The base string from which to remove.
- *  @param {string} ss The string to remove.
- *  @return {string} A copy of {@code s} with {@code ss} removed or the full
- *      string if nothing is removed.
- */
-goog.string.remove = function(s, ss) {
-  var re = new RegExp(goog.string.regExpEscape(ss), '');
-  return s.replace(re, '');
-};
-
-
-/**
- *  Removes all occurrences of a substring from a string.
- *  @param {string} s The base string from which to remove.
- *  @param {string} ss The string to remove.
- *  @return {string} A copy of {@code s} with {@code ss} removed or the full
- *      string if nothing is removed.
- */
-goog.string.removeAll = function(s, ss) {
-  var re = new RegExp(goog.string.regExpEscape(ss), 'g');
-  return s.replace(re, '');
-};
-
-
-/**
- * Escapes characters in the string that are not safe to use in a RegExp.
- * @param {*} s The string to escape. If not a string, it will be casted
- *     to one.
- * @return {string} A RegExp safe, escaped copy of {@code s}.
- */
-goog.string.regExpEscape = function(s) {
-  return String(s).replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, '\\$1').
-      replace(/\x08/g, '\\x08');
-};
-
-
-/**
- * Repeats a string n times.
- * @param {string} string The string to repeat.
- * @param {number} length The number of times to repeat.
- * @return {string} A string containing {@code length} repetitions of
- *     {@code string}.
- */
-goog.string.repeat = function(string, length) {
-  return new Array(length + 1).join(string);
-};
-
-
-/**
- * Pads number to given length and optionally rounds it to a given precision.
- * For example:
- * <pre>padNumber(1.25, 2, 3) -> '01.250'
- * padNumber(1.25, 2) -> '01.25'
- * padNumber(1.25, 2, 1) -> '01.3'
- * padNumber(1.25, 0) -> '1.25'</pre>
- *
- * @param {number} num The number to pad.
- * @param {number} length The desired length.
- * @param {number=} opt_precision The desired precision.
- * @return {string} {@code num} as a string with the given options.
- */
-goog.string.padNumber = function(num, length, opt_precision) {
-  var s = goog.isDef(opt_precision) ? num.toFixed(opt_precision) : String(num);
-  var index = s.indexOf('.');
-  if (index == -1) {
-    index = s.length;
-  }
-  return goog.string.repeat('0', Math.max(0, length - index)) + s;
-};
-
-
-/**
- * Returns a string representation of the given object, with
- * null and undefined being returned as the empty string.
- *
- * @param {*} obj The object to convert.
- * @return {string} A string representation of the {@code obj}.
- */
-goog.string.makeSafe = function(obj) {
-  return obj == null ? '' : String(obj);
-};
-
-
-/**
- * Concatenates string expressions. This is useful
- * since some browsers are very inefficient when it comes to using plus to
- * concat strings. Be careful when using null and undefined here since
- * these will not be included in the result. If you need to represent these
- * be sure to cast the argument to a String first.
- * For example:
- * <pre>buildString('a', 'b', 'c', 'd') -> 'abcd'
- * buildString(null, undefined) -> ''
- * </pre>
- * @param {...*} var_args A list of strings to concatenate. If not a string,
- *     it will be casted to one.
- * @return {string} The concatenation of {@code var_args}.
- */
-goog.string.buildString = function(var_args) {
-  return Array.prototype.join.call(arguments, '');
-};
-
-
-/**
- * Returns a string with at least 64-bits of randomness.
- *
- * Doesn't trust Javascript's random function entirely. Uses a combination of
- * random and current timestamp, and then encodes the string in base-36 to
- * make it shorter.
- *
- * @return {string} A random string, e.g. sn1s7vb4gcic.
- */
-goog.string.getRandomString = function() {
-  var x = 2147483648;
-  return Math.floor(Math.random() * x).toString(36) +
-         Math.abs(Math.floor(Math.random() * x) ^ goog.now()).toString(36);
-};
-
-
-/**
- * Compares two version numbers.
- *
- * @param {string|number} version1 Version of first item.
- * @param {string|number} version2 Version of second item.
- *
- * @return {number}  1 if {@code version1} is higher.
- *                   0 if arguments are equal.
- *                  -1 if {@code version2} is higher.
- */
-goog.string.compareVersions = function(version1, version2) {
-  var order = 0;
-  // Trim leading and trailing whitespace and split the versions into
-  // subversions.
-  var v1Subs = goog.string.trim(String(version1)).split('.');
-  var v2Subs = goog.string.trim(String(version2)).split('.');
-  var subCount = Math.max(v1Subs.length, v2Subs.length);
-
-  // Iterate over the subversions, as long as they appear to be equivalent.
-  for (var subIdx = 0; order == 0 && subIdx < subCount; subIdx++) {
-    var v1Sub = v1Subs[subIdx] || '';
-    var v2Sub = v2Subs[subIdx] || '';
-
-    // Split the subversions into pairs of numbers and qualifiers (like 'b').
-    // Two different RegExp objects are needed because they are both using
-    // the 'g' flag.
-    var v1CompParser = new RegExp('(\\d*)(\\D*)', 'g');
-    var v2CompParser = new RegExp('(\\d*)(\\D*)', 'g');
-    do {
-      var v1Comp = v1CompParser.exec(v1Sub) || ['', '', ''];
-      var v2Comp = v2CompParser.exec(v2Sub) || ['', '', ''];
-      // Break if there are no more matches.
-      if (v1Comp[0].length == 0 && v2Comp[0].length == 0) {
-        break;
-      }
-
-      // Parse the numeric part of the subversion. A missing number is
-      // equivalent to 0.
-      var v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10);
-      var v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);
-
-      // Compare the subversion components. The number has the highest
-      // precedence. Next, if the numbers are equal, a subversion without any
-      // qualifier is always higher than a subversion with any qualifier. Next,
-      // the qualifiers are compared as strings.
-      order = goog.string.compareElements_(v1CompNum, v2CompNum) ||
-          goog.string.compareElements_(v1Comp[2].length == 0,
-              v2Comp[2].length == 0) ||
-          goog.string.compareElements_(v1Comp[2], v2Comp[2]);
-      // Stop as soon as an inequality is discovered.
-    } while (order == 0);
-  }
-
-  return order;
-};
-
-
-/**
- * Compares elements of a version number.
- *
- * @param {string|number|boolean} left An element from a version number.
- * @param {string|number|boolean} right An element from a version number.
- *
- * @return {number}  1 if {@code left} is higher.
- *                   0 if arguments are equal.
- *                  -1 if {@code right} is higher.
- * @private
- */
-goog.string.compareElements_ = function(left, right) {
-  if (left < right) {
-    return -1;
-  } else if (left > right) {
-    return 1;
-  }
-  return 0;
-};
-
-
-/**
- * Maximum value of #goog.string.hashCode, exclusive. 2^32.
- * @type {number}
- * @private
- */
-goog.string.HASHCODE_MAX_ = 0x100000000;
-
-
-/**
- * String hash function similar to java.lang.String.hashCode().
- * The hash code for a string is computed as
- * s[0] * 31 ^ (n - 1) + s[1] * 31 ^ (n - 2) + ... + s[n - 1],
- * where s[i] is the ith character of the string and n is the length of
- * the string. We mod the result to make it between 0 (inclusive) and 2^32
- * (exclusive).
- * @param {string} str A string.
- * @return {number} Hash value for {@code str}, between 0 (inclusive) and 2^32
- *  (exclusive). The empty string returns 0.
- */
-goog.string.hashCode = function(str) {
-  var result = 0;
-  for (var i = 0; i < str.length; ++i) {
-    result = 31 * result + str.charCodeAt(i);
-    // Normalize to 4 byte range, 0 ... 2^32.
-    result %= goog.string.HASHCODE_MAX_;
-  }
-  return result;
-};
-
-
-/**
- * The most recent unique ID. |0 is equivalent to Math.floor in this case.
- * @type {number}
- * @private
- */
-goog.string.uniqueStringCounter_ = Math.random() * 0x80000000 | 0;
-
-
-/**
- * Generates and returns a string which is unique in the current document.
- * This is useful, for example, to create unique IDs for DOM elements.
- * @return {string} A unique id.
- */
-goog.string.createUniqueString = function() {
-  return 'goog_' + goog.string.uniqueStringCounter_++;
-};
-
-
-/**
- * Converts the supplied string to a number, which may be Ininity or NaN.
- * This function strips whitespace: (toNumber(' 123') === 123)
- * This function accepts scientific notation: (toNumber('1e1') === 10)
- *
- * This is better than Javascript's built-in conversions because, sadly:
- *     (Number(' ') === 0) and (parseFloat('123a') === 123)
- *
- * @param {string} str The string to convert.
- * @return {number} The number the supplied string represents, or NaN.
- */
-goog.string.toNumber = function(str) {
-  var num = Number(str);
-  if (num == 0 && goog.string.isEmpty(str)) {
-    return NaN;
-  }
-  return num;
-};
-
-
-/**
- * A memoized cache for goog.string.toCamelCase.
- * @type {Object.<string>}
- * @private
- */
-goog.string.toCamelCaseCache_ = {};
-
-
-/**
- * Converts a string from selector-case to camelCase (e.g. from
- * "multi-part-string" to "multiPartString"), useful for converting
- * CSS selectors and HTML dataset keys to their equivalent JS properties.
- * @param {string} str The string in selector-case form.
- * @return {string} The string in camelCase form.
- */
-goog.string.toCamelCase = function(str) {
-  return goog.string.toCamelCaseCache_[str] ||
-      (goog.string.toCamelCaseCache_[str] =
-          String(str).replace(/\-([a-z])/g, function(all, match) {
-            return match.toUpperCase();
-          }));
-};
-
-
-/**
- * A memoized cache for goog.string.toSelectorCase.
- * @type {Object.<string>}
- * @private
- */
-goog.string.toSelectorCaseCache_ = {};
-
-
-/**
- * Converts a string from camelCase to selector-case (e.g. from
- * "multiPartString" to "multi-part-string"), useful for converting JS
- * style and dataset properties to equivalent CSS selectors and HTML keys.
- * @param {string} str The string in camelCase form.
- * @return {string} The string in selector-case form.
- */
-goog.string.toSelectorCase = function(str) {
-  return goog.string.toSelectorCaseCache_[str] ||
-      (goog.string.toSelectorCaseCache_[str] =
-          String(str).replace(/([A-Z])/g, '-$1').toLowerCase());
-};