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/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
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#ifndef __EST_SERVICETABLE_H__
#define __EST_SERVICETABLE_H__
#include "EST_String.h"
#include "EST_rw_status.h"
#include "EST_TKVL.h"
/** A global table of known services. Used for fringe and festival
* servers.
*
* @author Richard Caley <rjc@cstr.ed.ac.uk>
* @version $Id: EST_ServiceTable.h,v 1.2 2001/04/04 13:11:27 awb Exp $
*/
class EST_ServiceTable {
public:
/** A service record.
*
* This is returned by service lookup operations, it contains
* enough information to contact the server and authenticate yourself.
*/
class Entry
{
public:
/// Name of the server.
EST_String name;
/// Type of server (eg `fringe')
EST_String type;
/// Human readable hostname.
EST_String hostname;
/// Numeric IP address (###.###.###.###)
EST_String address;
/// A random string to send as authorisation.
EST_String cookie;
/// TCP port number.
int port;
/// Create an empty entry.
Entry();
/// A suitable human readable name for the entry.
operator EST_String() const;
/// All entries are taken to be different.
friend bool operator == (const Entry &a, const Entry &b);
/// Print in human readable form.
friend ostream & operator << (ostream &s, const Entry &a);
};
private:
class EntryTable
{
public:
EST_TKVL<EST_String, Entry> t;
typedef EST_TKVL<EST_String, Entry>::Entries Entries;
typedef EST_TKVL<EST_String, Entry>::KeyEntries KeyEntries;
};
/// Table of available Fringe servers.
static EntryTable entries;
static bool random_init;
static void init_random(void);
public:
/**@name Finding What Services Are Available.
*
* Servers maintain a per-user file which lists the processes
* which are running in server mode by name. These functions read
* that table. */
//@{
/// Read the users default table. <filename>~/.estServices</filename>
static void read_table(void);
/// Read a specific table.
static void read_table(EST_String socketsFileName);
/// Write the users default table. <filename>~/.estServices</filename>
static void write_table(void);
/// Write a specific table.
static void write_table(EST_String socketsFileName);
/// List the table to given stream
static void list(ostream &s, const EST_String type);
/// Return a list of server names.
static void names(EST_TList<EST_String> &names, const EST_String type="");
//@}
/** Return the entry for the server with the given name and type.
* If no such entry is found a dummy entry with a port of 0 is returned.
*/
static const Entry &lookup(const EST_String name,
const EST_String type);
/** Create an entry for a server of the given name and type which is
* listening on the given socket.
*/
static const Entry &create(const EST_String name,
const EST_String type,
int socket);
};
#endif
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