Break out balsa and epoll_server from net/tools/flip_server.

net/tools/flip_server/string_piece_utils.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
-#define NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
-
-#include <ctype.h>
-
-#include "base/port.h"
-#include "base/strings/string_piece.h"
-
-namespace net {
-
-struct StringPieceCaseHash {
-  size_t operator()(const base::StringPiece& sp) const {
-    // based on __stl_string_hash in http://www.sgi.com/tech/stl/string
-    size_t hash_val = 0;
-    for (base::StringPiece::const_iterator it = sp.begin();
-         it != sp.end(); ++it) {
-      hash_val = 5 * hash_val + tolower(*it);
-    }
-    return hash_val;
-  }
-};
-
-struct StringPieceUtils {
-  static bool EqualIgnoreCase(const base::StringPiece& piece1,
-                              const base::StringPiece& piece2) {
-    base::StringPiece::const_iterator p1i = piece1.begin();
-    base::StringPiece::const_iterator p2i = piece2.begin();
-    if (piece1.empty() && piece2.empty()) {
-      return true;
-    } else if (piece1.size() != piece2.size()) {
-      return false;
-    }
-    while (p1i != piece1.end() && p2i != piece2.end()) {
-      if (tolower(*p1i) != tolower(*p2i))
-        return false;
-      ++p1i;
-      ++p2i;
-    }
-    return true;
-  }
-
-  static void RemoveWhitespaceContext(base::StringPiece* piece1) {
-    base::StringPiece::const_iterator c = piece1->begin();
-    base::StringPiece::const_iterator e = piece1->end();
-    while (c != e && isspace(*c)) {
-      ++c;
-    }
-    if (c == e) {
-      *piece1 = base::StringPiece(c, e-c);
-      return;
-    }
-    --e;
-    while (c != e &&isspace(*e)) {
-      --e;
-    }
-    ++e;
-    *piece1 = base::StringPiece(c, e-c);
-  }
-
-  static bool StartsWithIgnoreCase(const base::StringPiece& text,
-                                   const base::StringPiece& starts_with) {
-    if (text.size() < starts_with.size())
-      return false;
-    return EqualIgnoreCase(text.substr(0, starts_with.size()), starts_with);
-  }
-};
-struct StringPieceCaseEqual {
-  bool operator()(const base::StringPiece& piece1,
-                  const base::StringPiece& piece2) const {
-    return StringPieceUtils::EqualIgnoreCase(piece1, piece2);
-  }
-};
-
-
-
-}  // namespace net
-
-#endif  // NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
-