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/* dimacs.h (reading data in DIMACS format) */
/***********************************************************************
* This code is part of GLPK (GNU Linear Programming Kit).
* Copyright (C) 2009-2015 Free Software Foundation, Inc.
* Written by Andrew Makhorin <mao@gnu.org>.
*
* GLPK 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
* (at your option) any later version.
*
* GLPK 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 GLPK. If not, see <http://www.gnu.org/licenses/>.
***********************************************************************/
#ifndef DIMACS_H
#define DIMACS_H
#include "env.h"
typedef struct DMX DMX;
struct DMX
{ /* DIMACS data reader */
jmp_buf jump;
/* label for go to in case of error */
const char *fname;
/* name of input text file */
glp_file *fp;
/* stream assigned to input text file */
int count;
/* line count */
int c;
/* current character */
char field[255+1];
/* data field */
int empty;
/* warning 'empty line ignored' was printed */
int nonint;
/* warning 'non-integer data detected' was printed */
};
#define dmx_error _glp_dmx_error
void dmx_error(DMX *csa, const char *fmt, ...);
/* print error message and terminate processing */
#define dmx_warning _glp_dmx_warning
void dmx_warning(DMX *csa, const char *fmt, ...);
/* print warning message and continue processing */
#define dmx_read_char _glp_dmx_read_char
void dmx_read_char(DMX *csa);
/* read character from input text file */
#define dmx_read_designator _glp_dmx_read_designator
void dmx_read_designator(DMX *csa);
/* read one-character line designator */
#define dmx_read_field _glp_dmx_read_field
void dmx_read_field(DMX *csa);
/* read data field */
#define dmx_end_of_line _glp_dmx_end_of_line
void dmx_end_of_line(DMX *csa);
/* skip white-space characters until end of line */
#define dmx_check_int _glp_dmx_check_int
void dmx_check_int(DMX *csa, double num);
/* print a warning if non-integer data are detected */
#endif
/* eof */
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