/**
 * @file        addZero.c
 * @author      Robert S Laramee
 * @version     1.0
 * @see         ARrenderer, MarchingCubesReader
 * <P>
 * start date   Sun 23 May 99
 * finish date  none
 * <P>
 * Description  This program is meant to read in raw data, preferably 
 *              ASCII floats, with fixed dimensions e.g. 64 X 64 X 64,
 * and output that same data with a zero prepended to the number.
 */

#include <stdio.h>

/*  dimensions constants  */  
#define ZLAYERS  64
#define YCOLUMNS 64
#define XROWS    64

#define NUMBER   9    /*  5 digits + 1 period + 1 dash + 1 return + 1 extra  */

void parseFile(FILE *inputFile);
/**
 * The main() function starts the prependZero filter.
 * @param -the name of the file to read from
 */
int main (int argc, char *argv[]) {

    FILE *inputFile;

    if (( inputFile = fopen(argv[1],"r")) == NULL) {

	perror("***Error, couldn't open input file");
	exit(1);
    }
    parseFile(inputFile);
    fclose(inputFile);
}
/**
 * This method parses the data file
 * @param fd -a file descriptor
 */
void parseFile(FILE *inputFile) {

    int  x,y,z; 
    char string[NUMBER];

    for (z = 0; z < ZLAYERS; z++)  {            /*  FOR EACH ZLAYER   */

	for (y = 0; y < YCOLUMNS; y++)  {  	/*  FOR EACH YCOLUMN  */

	    for (x = 0; x < XROWS; x++)  {  	/*  FOR EACH XROW     */

		fscanf(inputFile, "%s\n", string);

		if (string[0] == '-')
		    printf("-0%s\n", 
			   strstr(string, ".")); /* string library function */
		else
		    printf("0%s\n", string);
	    }
	}
    }
}