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/*******************************************************************
* Program: carpet2xgraph
* Description: Converts from Carpet ASCII file format to Xgraph format
* Author: Scott H. Hawley
* Date: June 17, 2002
*
* This will select the data for ONE REFINEMENT LEVEL (default 0)
* and send the result to stdout. The "xgraph format" data is
* not, however, fully annotated and someone may wish to improve
* this.
*
* The [clip_data_at] command-line argument was added for use with
* 1/r data, to replace the infinities at the origin with whatever
* value the user specifies.
*******************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*******************************************************************
* Function: read_next_set
* Supposed to read one time step of data (for one level of refinement)
*******************************************************************/
int read_next_set(FILE *infile, int rlev, int *numelems,
double *time,
double **coord, double **data, int clip_data, double clip_val)
;
int read_next_set(FILE *infile, int rlev, int *numelems,
double *time,
double **coord, double **data, int clip_data, double clip_val)
{
char in_line[200];
int it,tl,rl,c,ml,ix,iy,iz;
double xval, yval, zval;
double coordval, dataval;
int hit_first_non_blank = 0;
int stop_reading = 0;
int retval = 0;
int rc = 0;
*numelems = 0;
sprintf(in_line," ");
/* reads up to first blank line after non-blank lines, or up to
* eof */
while ((fgets(in_line,200,infile) != NULL) && (!stop_reading) ) {
if (in_line[0]=='#') {
hit_first_non_blank = 1;
} else if ((strncmp("\n",in_line,2)==0) ||
(in_line[0]==' ')) {
if (hit_first_non_blank) {
stop_reading = 1;
}
} else { /* Assume that we're dealing with a line of numbers */
hit_first_non_blank = 1;
retval = sscanf(in_line,"%d %d %d %d %d %d %d %d %lg %lg %lg %lg %lg",
&it,&tl,&rl,&c,&ml,&ix,&iy,&iz,time,&xval,&yval,&zval,&dataval);
coordval = xval;
/* Only add input to arrays if it's for the right ref. level */
if ( (retval == 13) && (rl == rlev)) {
(*numelems)++;
if (coord==NULL) {
*coord = (double *)malloc(sizeof(double)* (*numelems));
*data = (double *)malloc(sizeof(double)* (*numelems));
} else {
*coord = (double *)realloc(*coord, sizeof(double)* (*numelems));
*data = (double *)realloc(*data, sizeof(double)* (*numelems));
}
if (coord==NULL) {
fprintf(stderr,"Error: malloc/realloc returned NULL\n");
exit(1);
}
(*coord)[(*numelems)-1] = coordval;
/* If desired, "clip" data above a certain value */
if (clip_data && (dataval > clip_val)) {
(*data)[(*numelems)-1] = clip_val;
} else {
(*data)[(*numelems)-1] = dataval;
}
}
}
}
rc = feof(infile);
return rc;
}
/********************************************************************
* Main part of program
********************************************************************/
int main(int argc, char **argv)
{
char *infilename;
FILE *infile;
char func_name[200];
double time;
int numelems_in_set = 0;
int rlev = 0;
double *coord, *data;
int clip_data = 0;
double clip_val;
int i;
/*
* Parse command-line arguments
*/
if (argc <= 1) {
fprintf(stderr," input from stdin... invoke carpet2xgraph -h for help\n");
} else if (strcmp(argv[1],"-h")==0) {
fprintf(stderr,"usage: cat file | carpet2xgraph [name_tag] [ref_lev] [clip_data_at]\n");
exit(1);
}
if (argc >= 2) {
infilename = argv[1];
} else {
infilename = "stdin";
}
if (argc >= 3) {
sscanf(argv[2],"%d",&rlev);
}
if (argc >= 4) {
sscanf(argv[3],"%lf",&clip_val);
clip_data = 1;
}
/*
* Open the input file
*/
infile = stdin;
/*
infile = fopen(infilename,"r");
if (infile == NULL) {
fprintf(stderr,"Error opening file '%s'.\n",infilename);
exit(1);
}
*/
time = 0;
coord = NULL;
data = NULL;
sprintf(func_name,"%s_%d",infilename,rlev);
printf("\"x-label x\n");
printf("\"y-label %s\n\n\n",infilename);
printf("\"label = %s\n\n\n",infilename);
/*
* Main loop for reading from input file and writing to output file
*/
while ( read_next_set(infile,rlev,&numelems_in_set,&time,&coord,&data,
clip_data, clip_val) == 0 ) {
if (numelems_in_set > 0) {
/* xgraph format */
printf("\"Time = %g\n",time);
for (i=0; i<numelems_in_set; i++) {
printf("%g %17.14g\n",coord[i],data[i]);
}
printf("\n\n");
free(coord);
free(data);
coord = NULL;
data = NULL;
}
}
return 0;
}
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