mv Base64.{cc,h} base64.{cc,h}

src/base64.h

@@ -0,0 +1,97 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * 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 --> */
+#ifndef D_BASE64_H
+#define D_BASE64_H
+#include <string>
+
+namespace aria2 {
+
+class Base64
+{
+private:
+  /**
+   * Removes non base64 chars(including '=') from src, and results are
+   * stored in nsrc and its length is stored in nlength.
+   * Caller must delete nsrc.
+   */
+  static void removeNonBase64Chars(unsigned char*& nsrc, size_t& nlength,
+                                   const unsigned char* src, size_t slength);
+
+public:
+  /**
+   * Encods src whose length is slength into base64 encoded data
+   * and stores them to result.
+   * result is allocated in this function and the length is stored to rlength.
+   * If slength is equal to 0, then return with rlength set to 0 and result
+   * is left untouched.
+   * A caller must deallocate the memory used by result.
+   */
+  static void encode(unsigned char*& result, size_t& rlength,
+                     const unsigned char* src, size_t slength);
+
+  static void encode(unsigned char*& result, size_t& rlength,
+                     const char* src, size_t slength)
+  {
+    encode(result, rlength, reinterpret_cast<const unsigned char*>(src),
+           slength);
+  }
+
+  static std::string encode(const std::string& s);
+
+  /**
+   * Dencods base64 encoded src whose length is slength and stores them to
+   * result.
+   * result is allocated in this function and the length is stored to rlength.
+   * If slength is equal to 0 or is not multiple of 4, then return with rlength
+   * set to 0 and result is left untouched.
+   * The function removes non-base64 characters before decoding.
+   * A caller must deallocate the memory used by result.
+   */
+  static void decode(unsigned char*& result, size_t& rlength,
+                     const unsigned char* src, size_t slength);
+
+  static void decode(unsigned char*& result, size_t& rlength,
+                     const char* src, size_t slength)
+  {
+    decode(result, rlength, reinterpret_cast<const unsigned char*>(src),
+           slength);
+  }
+
+  static std::string decode(const std::string& s);
+};
+
+} // namespace aria2
+
+#endif // D_BASE64_H