ttail/src/include/ttail_search_std.h

/*
 * Copyright 2017 Yann Weber
 * 
 * This file is part of Ttail.
 * 
 * Ttail 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 3 of the License, or
 * any later version.
 * 
 * Ttail 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 Ttail.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef _ttail_search_std_h__
#define _ttail_search_std_h__

#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

typedef struct _ttail_search_stdin_s ttail_search_stdin_t;
/*<! Private search session for stdin */
struct _ttail_search_stdin_s
{
	/**@brief ttail_std_getline buffer
	 *@note buffer is used by format detection
	 */
	char *buff;
	/**@brief buffer size */
	size_t buff_sz;
};

#include "config.h"
#include "ttail.h"
#include "ttail_search.h"

/**@brief Convenient wrapper for getline
 *@param ttail_t* TTAIL
 *@param size_t ID file id
 *@return @ref getline()
 */
#define ttail_std_getline(TTAIL) (getline(\
	&(TTAIL->session->std.buff), &(TTAIL->session->std.buff_sz), TTAIL_STDIN))
/*<!Accessor to getline wrapper buffer */
#define ttail_std_getline_buff(TTAIL) (TTAIL->session->std.buff)

/**@brief init private session members
 *@patam ttail_t* t
 *@return -1 on error else 0
 */
int ttail_search_std_init(ttail_t* t);

/**@brief Date format initialisation using logfiles
 *
 *If no format set yet attempt to guess it from logfiles
 *@param ttail_t*
 *@return 0 on success -1 on failure 1 if format was allready set
 *@see _ttail_search_files_fmt_guess()
 */
int _ttail_search_std_fmt_init(ttail_t*);

/**@brief @ref ttail_search_closest() implementation for stdin
 *@warning Expect that ttail_search_closest_std_init() has been called
 *@note when returns ttail->session->std.buff contains the first
 *line to print
 *@param ttail_t*
 *@param struct tm* tmin
 *@return 0 if ok -1 if fatal error 1 if not found
 *@todo checks
 */
int _ttail_search_closest_stdin(ttail_t*);

/**@brief Output result loglines to stdout
 *@param ttail_t*
 *@param int fd
 *@todo checks
 */
void _ttail_search_print_stdin(ttail_t*, int);

/**@brief free private session members
 *@patam ttail_t* t
 */
void _ttail_search_stdin_free(ttail_t* t);

/**@brief Set the stdin file descriptor
 *
 *Usefull for checks
 */
void _ttail_set_stdin(int);

#endif