Pull args, intl, logging, shelf, and source_maps out of the SDK.

pkg/third_party/html5lib/lib/src/utils.dart

-/// Misc things that were useful when porting the code from Python.
-library utils;
-
-import 'constants.dart';
-
-typedef bool Predicate();
-
-class Pair<F, S> {
-  final F first;
-  final S second;
-
-  const Pair(this.first, this.second);
-
-  int get hashCode => 37 * first.hashCode + second.hashCode;
-  bool operator ==(other) => other.first == first && other.second == second;
-}
-
-int parseIntRadix(String str, [int radix = 10]) {
-  int val = 0;
-  for (int i = 0; i < str.length; i++) {
-    var digit = str.codeUnitAt(i);
-    if (digit >= LOWER_A) {
-      digit += 10 - LOWER_A;
-    } else if (digit >= UPPER_A) {
-      digit += 10 - UPPER_A;
-    } else {
-      digit -= ZERO;
-    }
-    val = val * radix + digit;
-  }
-  return val;
-}
-
-bool any(List<bool> iterable) => iterable.any((f) => f);
-
-bool startsWithAny(String str, List<String> prefixes) {
-  for (var prefix in prefixes) {
-    if (str.startsWith(prefix)) {
-      return true;
-    }
-  }
-  return false;
-}
-
-// Like the python [:] operator.
-List slice(List list, int start, [int end]) {
-  if (end == null) end = list.length;
-  if (end < 0) end += list.length;
-
-  // Ensure the indexes are in bounds.
-  if (end < start) end = start;
-  if (end > list.length) end = list.length;
-  return list.sublist(start, end);
-}
-
-bool allWhitespace(String str) {
-  for (int i = 0; i < str.length; i++) {
-    if (!isWhitespaceCC(str.codeUnitAt(i))) return false;
-  }
-  return true;
-}
-
-String padWithZeros(String str, int size) {
-  if (str.length == size) return str;
-  var result = new StringBuffer();
-  size -= str.length;
-  for (int i = 0; i < size; i++) result.write('0');
-  result.write(str);
-  return result.toString();
-}
-
-// TODO(jmesserly): this implementation is pretty wrong, but I need something
-// quick until dartbug.com/1694 is fixed.
-/// Format a string like Python's % string format operator. Right now this only
-/// supports a [data] dictionary used with %s or %08x. Those were the only
-/// things needed for [errorMessages].
-String formatStr(String format, Map data) {
-  if (data == null) return format;
-  data.forEach((key, value) {
-    var result = new StringBuffer();
-    var search = '%($key)';
-    int last = 0, match;
-    while ((match = format.indexOf(search, last)) >= 0) {
-      result.write(format.substring(last, match));
-      match += search.length;
-
-      int digits = match;
-      while (isDigit(format[digits])) {
-        digits++;
-      }
-      int numberSize;
-      if (digits > match) {
-        numberSize = int.parse(format.substring(match, digits));
-        match = digits;
-      }
-
-      switch (format[match]) {
-        case 's':
-          result.write(value);
-          break;
-        case 'd':
-          var number = value.toString();
-          result.write(padWithZeros(number, numberSize));
-          break;
-        case 'x':
-          var number = value.toRadixString(16);
-          result.write(padWithZeros(number, numberSize));
-          break;
-        default: throw "not implemented: formatStr does not support format "
-            "character ${format[match]}";
-      }
-
-      last = match + 1;
-    }
-
-    result.write(format.substring(last, format.length));
-    format = result.toString();
-  });
-
-  return format;
-}