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diff --git a/src/ColorizedStream.cc b/src/ColorizedStream.cc
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+++ b/src/ColorizedStream.cc
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+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2013 Nils Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+
+#include "ColorizedStream.h"
+
+
+namespace aria2 {
+namespace colors {
+
+const Color black("30");
+const Color red("31");
+const Color green("32");
+const Color yellow("33");
+const Color blue("34");
+const Color magenta("35");
+const Color cyan("36");
+const Color white("37");
+
+const Color lightred("1;31");
+const Color lightgreen("1;32");
+const Color lightyellow("1;33");
+const Color lightblue("1;34");
+const Color lightmagenta("1;35");
+const Color lightcyan("1;36");
+const Color lightwhite("1;37");
+
+const Color clear("0");
+
+} // namespace colors
+
+std::string ColorizedStreamBuf::str(bool color) const
+{
+  std::stringstream rv;
+  for (const auto& e: elems) {
+    if (color || e.first != eColor) {
+      rv << e.second;
+    }
+  }
+  if (color) {
+    rv << colors::clear.str();
+  }
+  return rv.str();
+}
+
+std::string ColorizedStreamBuf::str(bool color, size_t max) const
+{
+  std::stringstream rv;
+  for (const auto& e: elems) {
+    if (e.first == eColor) {
+      if (color) {
+        rv << e.second;
+      }
+      continue;
+    }
+    auto size = e.second.size();
+    if (size > max) {
+      auto cut = e.second;
+      cut.resize(max);
+      rv << cut;
+      break;
+    }
+    rv << e.second;
+    max -= size;
+    if (!max) {
+      break;
+    }
+  }
+  if (color) {
+    rv << colors::clear.str();
+  }
+  return rv.str();
+}
+
+} // namespace aria2