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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int digit(char x) {
return (x >= '0') && (x <= '9');
}
void write_time(FILE *cnf_file) {
char char_buff[200];
char curr_char;
int bufn=0;
int i;
while (curr_char != EOF) {
bufn=0;
while ((curr_char != '\n') && (curr_char != EOF)) {
if (bufn < 195) {
char_buff[bufn]=curr_char;
bufn++;
}
curr_char = fgetc(cnf_file);
}
char_buff[bufn]=0;
//printf("testing, %s\n", char_buff);
if (strncmp(char_buff, "Total Run Time",14) == 0) {
//printf("found it, %s\n", char_buff);
for (i=0; i<bufn; i++) {
if (char_buff[i] == '.' || digit(char_buff[i]))
putchar(char_buff[i]);
}
return;
}
curr_char = fgetc(cnf_file);
}
printf("-1"); // no time found
}
void write_instance(FILE *cnf_file) {
char char_buff[100];
char curr_char;
int bufn=0;
int negative=0;
long curr_num=1;
long read_num;
curr_char = fgetc(cnf_file);
while (curr_char == ' ' ||
curr_char == '-' ||
digit(curr_char)) {
if (curr_char == ' ') {
char_buff[bufn]=0;
read_num = atol(char_buff);
while (curr_num < read_num) {
/* Some numbers may not be specified in the
satisfying instance. In that case, I assume
their value is irrelevant */
printf("X ");
curr_num++;
}
if (curr_num != read_num) {
/* I assume that all the numbers come in order */
printf("Error: Read in a number out of sequence: %s\n", char_buff);
exit(1);
}
/* Now we print out the value of the corresponding number */
if (negative == 1) {
printf("nil ");
} else {
printf("t ");
}
curr_num++;
bufn = 0;
negative=0;
} else if (curr_char == '-') {
negative=1;
} else if (bufn < 10) {
char_buff[bufn] = curr_char;
bufn++;
} else {
/* Note: I should be doing something more intelligent here but
it's too late to print out a good error message */
printf("Error: Number is too big to be read\n");
exit(1);
}
curr_char = fgetc(cnf_file);
}
}
int main(int nargs, char **argc) {
FILE *cnf_file;
char curr_char;
char char_buff[100];
int bufn=0;
if (nargs <= 1) {
printf("(Error \"No input file name given\")\n");
return 1;
}
cnf_file = fopen(argc[1], "r");
curr_char = fgetc(cnf_file);
while (curr_char != EOF) {
/* printf(".\n"); */
bufn=0;
while ((curr_char != '\n') && (curr_char != EOF)) {
if (bufn < 50) {
char_buff[bufn]=curr_char;
bufn++;
}
curr_char = fgetc(cnf_file);
}
char_buff[bufn]=0;
/* printf("Checking: %s, %d\n", char_buff, strcmp(char_buff, "Instance Satisfiable")); */
if (strcmp(char_buff, "Instance Unsatisfiable") == 0) {
/* Instance is unsatisfiable */
printf("(unsat)\n");
printf("(time \"");
write_time(cnf_file);
printf("\")\n");
fclose(cnf_file);
return 0;
}
if (strcmp(char_buff, "Instance Satisfiable") == 0) {
/* Instance is satisfiable */
printf("(sat ");
write_instance(cnf_file);
printf(")\n");
printf("(time \"");
write_time(cnf_file);
printf("\")\n");
fclose(cnf_file);
return 0;
}
if (curr_char != EOF) curr_char = fgetc(cnf_file);
}
printf("(Error \"no result\")\n");
fclose(cnf_file);
return 1;
}
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