Refactor tar code to support long names....

import/cross/tar_generator.h

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 49 matching lines @@
  public:
   explicit TarGenerator(StreamProcessor *callback_client)
       : callback_client_(callback_client),
         data_block_buffer_(TAR_BLOCK_SIZE),  // initialized to zeroes
         data_buffer_stream_(data_block_buffer_, TAR_BLOCK_SIZE) {}
 
   virtual ~TarGenerator() { Finalize(); }
 
   // Call AddFile() for each file entry, followed by calls to AddFileBytes()
   // for the file's data
-  virtual void AddFile(const String &file_name,
+  virtual bool AddFile(const String &file_name,

[Chris Rogers, 2009/07/21 19:14:28]

add comment about return value

                        size_t file_size);
 
   // Call to "push" bytes to be processed - our client will get called back
   // with the byte stream, with files rounded up to the nearest block size
   // (with zero padding)
   virtual int AddFileBytes(MemoryReadStream *stream, size_t n);
 
   // Must call this after all files and file data have been written
   virtual void Finalize();
 
  private:
-  void AddEntry(const String &file_name,
+  bool AddEntry(const String &file_name,

[Chris Rogers, 2009/07/21 19:14:28]

add comment about return value

                 size_t file_size,
                 bool is_directory);
 
-  void AddDirectory(const String &file_name);
-  void AddDirectoryEntryIfNeeded(const String &file_name);
+  bool AddDirectory(const String &file_name);

[Chris Rogers, 2009/07/21 19:14:28]

comment about return value

+  bool AddDirectoryEntryIfNeeded(const String &file_name);
 
   // Checksum for each header
   void ComputeCheckSum(uint8 *header);
 
+  // Writes a head block.
+  void WriteHeader(const String& filename,
+                   size_t file_size,
+                   char type,
+                   int mode,
+                   int user_id,
+                   int group_id,
+                   int mod_time);
+
   // flushes buffered file data to the client callback
   // if |flush_padding_zeroes| is |true| then flush a complete block
   // with zero padding even if less was buffered
   void FlushDataBuffer(bool flush_padding_zeroes);
 
   enum {TAR_HEADER_SIZE = 512};
   enum {TAR_BLOCK_SIZE = 512};
 
   StreamProcessor *callback_client_;
 
@@ skipping 14 matching lines @@
   typedef std::map<const std::string, bool, StrCmp>  DirectoryMap;
 
   DirectoryMap directory_map_;
 
   DISALLOW_COPY_AND_ASSIGN(TarGenerator);
 };
 
 }  // namespace o3d
 
 #endif  //  O3D_IMPORT_CROSS_TAR_GENERATOR_H_