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/*************************************************
* Pipe Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_PIPE_H__
#define BOTAN_PIPE_H__
#include <botan/data_src.h>
#include <botan/filter.h>
#include <iosfwd>
namespace Botan {
/*************************************************
* Pipe *
*************************************************/
class Pipe : public DataSource
{
public:
typedef u32bit message_id;
static const message_id LAST_MESSAGE, DEFAULT_MESSAGE;
void write(const byte[], u32bit);
void write(const MemoryRegion<byte>&);
void write(const std::string&);
void write(DataSource&);
void write(byte);
void process_msg(const byte[], u32bit);
void process_msg(const MemoryRegion<byte>&);
void process_msg(const std::string&);
void process_msg(DataSource&);
u32bit remaining(message_id = DEFAULT_MESSAGE) const;
u32bit read(byte[], u32bit);
u32bit read(byte[], u32bit, message_id);
u32bit read(byte&, message_id = DEFAULT_MESSAGE);
SecureVector<byte> read_all(message_id = DEFAULT_MESSAGE);
std::string read_all_as_string(message_id = DEFAULT_MESSAGE);
u32bit peek(byte[], u32bit, u32bit) const;
u32bit peek(byte[], u32bit, u32bit, message_id) const;
u32bit peek(byte&, u32bit, message_id = DEFAULT_MESSAGE) const;
message_id default_msg() const { return default_read; }
void set_default_msg(message_id);
u32bit message_count() const;
bool end_of_data() const;
void start_msg();
void end_msg();
void prepend(Filter*);
void append(Filter*);
void pop();
void reset();
Pipe(Filter* = 0, Filter* = 0, Filter* = 0, Filter* = 0);
Pipe(Filter*[], u32bit);
~Pipe();
private:
Pipe(const Pipe&) : DataSource() {}
Pipe& operator=(const Pipe&) { return (*this); }
void init();
void destruct(Filter*);
void find_endpoints(Filter*);
void clear_endpoints(Filter*);
message_id get_message_no(const std::string&, message_id) const;
Filter* pipe;
class Output_Buffers* outputs;
message_id default_read;
bool inside_msg;
};
/*************************************************
* I/O Operators for Pipe *
*************************************************/
std::ostream& operator<<(std::ostream&, Pipe&);
std::istream& operator>>(std::istream&, Pipe&);
}
#endif
#if defined(BOTAN_EXT_PIPE_UNIXFD_IO)
#include <botan/fd_unix.h>
#endif
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