IOTools.h

Go to the documentation of this file.

/*---------------------------------------------------------------------\
|                          ____ _   __ __ ___                          |
|                         |__  / \ / / . \ . \                         |
|                           / / \ V /|  _/  _/                         |
|                          / /__ | | | | | |                           |
|                         /_____||_| |_| |_|                           |
|                                                                      |
\---------------------------------------------------------------------*/
#ifndef ZYPP_BASE_IOTOOLS_H
#define ZYPP_BASE_IOTOOLS_H
 
#include <stdio.h>
#include <utility>
#include <string>
#include <zypp-core/base/Exception.h>
 
namespace zypp::io {
 
  enum class BlockingMode{
    FailedToSetMode = -1, 
    WasBlocking,          
    WasNonBlocking        
  };

  BlockingMode setFILEBlocking ( FILE *file, bool mode = true );
  BlockingMode setFDBlocking ( int fd, bool mode = true );
 

  bool writeAll ( int fd, void *buf, size_t size );

  enum class ReadAllResult {
          Error,
          Eof,
          Ok
  };
  ReadAllResult readAll ( int fd, void *buf, size_t size );
 
  class ZYPP_API TimeoutException : public Exception
  {
  public:
    TimeoutException() : Exception( "Timeout Exception" )
    {}

    TimeoutException( const std::string & msg_r )
      : Exception( msg_r )
    {}

    ~TimeoutException() noexcept override;
  };
 
  enum ReceiveUpToResult {
    Success,
    Timeout,
    EndOfFile,
    Error,
  };
 
  using timeout_type = size_t;
  static constexpr timeout_type no_timeout = static_cast<timeout_type>(-1);

  std::pair<ReceiveUpToResult, std::string> receiveUpto( FILE * file, char c, timeout_type timeout, bool failOnUnblockError = true );

  std::vector<char> peek_data_fd ( FILE *fd, off_t offset, size_t count );
}
 
#endif