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/***************************************************************
LanceMan's quickplot --- a fast interactive 2D plotter
Copyright (C) 1998, 1999 Lance Arsenault
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; version 2
of the License.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Or look at http://www.gnu.org/copyleft/gpl.html .
**********************************************************************/
/* $Id: read_binary_file.c,v 1.5.1.2 1999/01/16 01:31:28 lance Exp $ */
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "data.h"
#define DEBUG 0
extern void verbose_read_report(Plot *plot, unsigned long num_points,
int num_fields, const char *file);
extern void realloc_plot_data_and_max_min(Plot *plot, int num_fields);
extern int check_data_size(Plot *plot,int num_fields,
unsigned long num_points);
extern void add_data_size(Plot *plot, struct Data **currentdata,
int num_fields,unsigned long *num_points);
int read_binary_file(FILE *fileptr, char *file, Plot *plot)
{
int i,j,num_fields,n;
unsigned long num_Data, num_points;
double *readin;
struct Data **dd;
/* read an int= the number of data fields in the file */
/******************************************************/
if((1 != fread((void *) &num_fields,sizeof(int),1,fileptr))
&& num_fields>0)
return 1;
plot->dim += num_fields;
#if(DEBUG)
fprintf(stderr,"quickplot Info: num_fields = %d plot->dim = %d \n",num_fields,plot->dim);
#endif
/* skip lines */
/*******************************************/
assert((readin = (double *) malloc(sizeof(double)*num_fields)));
num_points = 0;
/**** skip_lines *****/
if(plot->flag & VERBOSE && plot->skip_lines)
fprintf(stderr,"quickplot Info: Skipping the first %d lines in file: %s\n",
plot->skip_lines,file);
for(num_points=0;num_points>plot->skip_lines && num_fields ==
fread((void *) readin,sizeof(double),(size_t) num_fields,fileptr)
;num_points++);
if(num_points < plot->skip_lines)
{
fprintf(stderr,
"quickplot ERROR: read only %ld lines of data in file %s\n",
num_points,file);
fprintf(stderr,"There must be at least %ld lines of data in addition to the %d line(s) skipped\n",MIN_NUM_POINTS,plot->skip_lines);
return 1;
}
#if(DEBUG)
fprintf(stderr,"quickplot info: skipped %ld data lines\n",num_points);
#endif
realloc_plot_data_and_max_min(plot,num_fields);
/* need array of Data pointers to move through data with */
assert((dd = (struct Data **) malloc(sizeof(struct Data *)*num_fields)) != NULL);
/* get plot->min and plot->max initialed to the first value */
/************************************************************/
if(( i = fread((void *) readin,sizeof(double),
(size_t) num_fields,fileptr)) == num_fields)
for(j = plot->dim-num_fields;j<plot->dim;j++)
plot->min[j] = plot->max[j] = readin[j - plot->dim + num_fields];
else
{
fprintf(stderr,
"quickplot ERROR: can't read any data from line number %d from file: %s\n",
plot->skip_lines+1,file);
return 1;
}
/** read in data **/
num_Data = 0UL;
num_points = 0UL;
add_data_size(plot,dd,num_fields,&num_Data);
n = plot->dim - num_fields;
num_points = 0;
while(!feof(fileptr) && i == num_fields)
{
if(dd[0] == NULL)
add_data_size(plot,dd,num_fields,&num_Data);
for(j=0;j<num_fields;j++)
{
dd[j]->val = readin[j];
if(readin[j] > plot->max[j+n])
plot->max[j+n] = readin[j];
if(readin[j] < plot->min[j+n])
plot->min[j+n] = readin[j];
dd[j] = dd[j]->next;
}
num_points++;
i = fread((void *) readin,sizeof(double),(size_t) num_fields,fileptr);
}
free(readin);
if(check_data_size(plot,num_fields,num_points))
return 1; /* error */
assert((plot->num_points = (unsigned long *) realloc(
(void *)plot->num_points,
sizeof(unsigned long)*plot->dim)) != NULL);
for(i=plot->dim - num_fields;i<plot->dim;i++)
{
plot->num_points[i] = num_points;
if(plot->num_points[i] < MIN_NUM_POINTS)
{
fprintf(stderr,
"quickplot ERROR: the file %s has only %ld point(s) and the minumum number of points that can be plotted is %ld .\n",
file,plot->num_points[i],MIN_NUM_POINTS);
exit(1);
}
}
#if(0)
n = plot->dim - num_fields;
for(i=0;i<num_fields;i++)
dd[i] = plot->data[plot->dim - num_fields+i];
fprintf(stderr,"quickplot Info: FILE %s\nmax then min values\n",file);
for(i=n;i<plot->dim;i++)
{
fprintf(stderr,"%g %g ",plot->max[i],plot->min[i]);
fprintf(stderr,"num_points = %ld\n",plot->num_points[i]);
}
fprintf(stderr,"\nmin values ");
for(i=n;i<plot->dim;i++)
fprintf(stderr,"%g ",plot->min[i]);
fprintf(stderr,"\nnum_fields = %d\n",num_fields);
while(dd[0] != NULL)
{
for(i=0;i<num_fields;i++)
{
fprintf(stderr,"%g ",dd[i]->val);
dd[i] = dd[i]->next;
}
fprintf(stderr,"\n");
}
/* exit(0);*/
#endif
free(dd);
verbose_read_report(plot, num_points, num_fields, file);
return 0;
}
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