/*    sitecopy, manage remote web sites.   Copyright (C) 1998-99, Joe Orton <joe@orton.demon.co.uk>.                                                                        This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 2 of the License, or   (at your option) any later version.     This program is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.     You should have received a copy of the GNU General Public License   along with this program; if not, write to the Free Software   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*//* You MUST implement all of the below functions in the front end. * After a site_update call, for each file which is being updated * the following calls are made: *   Optionally: fe_can_update( file ) *   fe_updating( file ); *   fe_updated( file, true, NULL ) if the update was successful, or *   fe_updated( file, false, "error message" ) otherwise. * Similarly for site_synch calls. * If fe_can_updated( file ) returns false, the update of that file * will not continue. * * During a file transfer, whenever a block is written to the remote * site, fe_transfer_progress( bytes_transferred, bytes_total ) is  * called. In other words, for a 10k file, the calls might be: *  fe_t_p( 1024, 10240 ), fe_t_p( 2048, 10240 ), *  fe_t_p( 3072, 10240 ) ... fe_t_p( 10240, 10240 ) * File transfers occur in site_update and site_synch, when uploading * and downloading files, respectively. */#ifndef FRONTEND_H#define FRONTEND_H#include "common.h"#include "sites.h"/* Connection Status API. * * fe_connection() is called to indicate what state the connection is * in. Note, the status may bounce between fe_connected and * fe_connecting many times during an operation - especially if * connected to a WebDAV server which doesn't implement HTTP/1.1 * persistent connections. */typedef enum {    fe_namelookup, /* Looking up hostname */    fe_connecting, /* Connecting to server */    fe_connected /* Connection established */} fe_conn_status;extern void fe_connection( fe_conn_status status );extern bool fe_can_update( const struct site_file_t *file );extern void fe_updating( const struct site_file_t *file );extern void fe_updated( const struct site_file_t *file, const bool success,			const char *error );/* Set to true for fe_can_update() calls before each update  * in site_update */extern bool fe_prompting;/* For synch mode */extern void fe_synching( const struct site_file_t *file );extern void fe_synched( const struct site_file_t *file, const bool success,			const char *error );/* For synch and update modes */extern void fe_transfer_progress( size_t progress, size_t total );/* For fetch mode - called for each file found remotely */extern void fe_fetch_found( const struct site_file_t *file );#endif /* FRONTEND_H */