sink_file.h

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#ifndef CVMFS_NETWORK_SINK_FILE_H_
#define CVMFS_NETWORK_SINK_FILE_H_

#include <cerrno>
#include <cstdio>
#include <string>

#include "sink.h"
#include "util/posix.h"

namespace cvmfs {

class FileSink : public Sink {
 public:
  explicit FileSink(FILE *destination_file) : Sink(false),
                                              file_(destination_file) { }
  FileSink(FILE *destination_file, bool is_owner) : Sink(is_owner),
                                                    file_(destination_file) { }

  virtual ~FileSink() { if (is_owner_ && file_) { (void) fclose(file_); } }

  virtual int64_t Write(const void *buf, uint64_t sz);

  virtual int Reset();

  virtual int Purge();

  virtual bool IsValid() {
    return file_ != NULL;
  }

  virtual int Flush() {
    return fflush(file_) == 0 ? 0 : -errno;
  }

  virtual bool Reserve(size_t /*size*/) {
    return true;
  }

  virtual bool RequiresReserve() {
    return false;
  }

  virtual std::string Describe();

  void Adopt(FILE *file, bool is_owner = true);

  FILE* file() { return file_; }



 private:
  FILE *file_;
};

}  // namespace cvmfs

#endif  // CVMFS_NETWORK_SINK_FILE_H_