/* min.c

   Compile with:   gcc -g min.c -lm -o min
   Example run:    min hs2_DEVIATION.N.l5

   Extracts the "best" a-interval (ie, the one that minimizes the fn+fp count)
   from a DEVIATION ("run") file. Used with phylogen/infocon, in single-region
   analyses, eg for hs2.
*/

#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/param.h>


#define Usage "%s <input file>"

void fatal(char *message);
void fatalf(char *msg, char *val);
FILE *ckopen(char *name, char *mode);


int main(int argc, char *argv[])
{
    char buffer[200], *s;
    int i, min;
    FILE *fp;
    
    if (argc!=2) fatalf(Usage, argv[0]);
    
    fp = ckopen(argv[1],"r");
    min = 100000;
    while (fgets(buffer,200,fp)!=NULL) {
       s = buffer; 
       while (!isspace(*s)) s++;    /* go past filename */
       while (isspace(*s)) s++;     /* go past blanks */
       while (!isspace(*s)) s++;    /* go past fp: label */
       while (isspace(*s)) s++;     /* go past blanks */  
       while (isdigit(*s)) s++;     /* go past fp values */
       while (isspace(*s)) s++;     /* go past blanks */
       while (!isspace(*s)) s++;    /* go past fn: label */
       while (isspace(*s)) s++;     /* go past blanks */  
       while (isdigit(*s)) s++;     /* go past fn values */
       while (isspace(*s)) s++;     /* go past blanks */ 
       while (!isspace(*s)) s++;    /* go past total: label */
       sscanf(s, "%d", &i); 
       if (i<min) min = i;
    }
    fclose(fp);

    printf("Minimum per file %s: %d\n",argv[1],min);

    return 0;
}

void fatal(char *msg)
{                
        (void)fprintf(stderr, "%s\n", msg);
        exit(1); 
}    
     
void fatalf(char *msg, char *val)
{    
        (void)fprintf(stderr, msg, val);  
        (void)putc('\n', stderr);
        exit(1);
}            
          
FILE *ckopen(char *name, char *mode)
{    
        FILE *fp;
     
        if ((fp = fopen(name, mode)) == NULL)
                fatalf("Cannot open %s.", name);
        return fp;
}