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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <getopt.h>
#include <string.h>
#include <errno.h>
#include <values.h>
#include "config.h"
#define DEFAULT_COUNT 10000
#define MINIMUM_COUNT 1
#define MAXIMUM_COUNT 100000000
#define DEFAULT_THRESH 0.000001
#ifdef MINFLOAT
#define MINIMUM_THRESH MINFLOAT
#else
#define MINIMUM_THRESH 0.0000001
#endif
#define MAXIMUM_THRESH 0.01
extern int yyparse();
extern FILE *yyin;
int cmd_parse_tree = 0;
int cmd_roll = 0;
int cmd_rolleval = 0;
int cmd_calc = 0;
int cmd_count = DEFAULT_COUNT;
float cmd_threshold = DEFAULT_THRESH;
extern char *filename;
static struct option long_options[] =
{
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
{"print-tree", no_argument, 0, 'p'},
{"roll", no_argument, 0, 'r'},
{"eval", no_argument, 0, 'e'},
{"calc", no_argument, 0, 'c'},
{"file", required_argument, 0, 'f'},
{"count", required_argument, 0, 'n'},
{"threshold", required_argument, 0, 't'},
{0, 0, 0, 0}
};
void usage() {
fprintf(stderr, "Usage: dicelab [options] [-f <file>]\n"
"Options:\n"
" --help -h -? print this text\n"
" --version -v print the program version\n"
" --print-tree -p print the parse tree (for debugging)\n"
" --eval -e evaluate the statistical distribution by\n"
" re-rolling\n"
" --calc -c calculate the distribution\n"
" --count -n specify the number of rolls used with --eval\n"
" default is %i\n"
" --roll -r roll the dice as specified, will also be used\n"
" if no other action is requested\n"
" --threshold -t cutoff threshold, results with a probability less\n"
" than this value will be discarded by some operations\n"
" when using --calc\n"
"File:\n"
" --file -f read the dice rolling specs from the file\n"
" specified, use stdin if not supplied\n\n",
DEFAULT_COUNT);
};
void splitargv(int argc, char *argv[], int *margc, char ***margv) {
*margc = 0;
*margv = NULL;
int i;
for (i = 0; i < argc; i++) {
char *tok;
int first = 1;
while ((tok = strtok(first ? argv[i] : NULL, " ")) != NULL) {
first = 0;
(*margc)++;
*margv = (char**)realloc(*margv, sizeof(char*) * (*margc));
(*margv)[(*margc)-1] = tok;
}
}
}
int main(int argc, char *argv[]) {
srand(time(NULL));
char *fname = NULL;
int option_index = 0;
int c;
int margc;
char **margv;
splitargv(argc, argv, &margc, &margv);
while (1) {
c = getopt_long(margc, margv, "?hvprecn:f:t:",
long_options, &option_index);
if (c == -1) {
break;
}
switch(c) {
case 'v':
printf("%s v%s by %s\n", PACKAGE_NAME, PACKAGE_VERSION,
PACKAGE_BUGREPORT);
return 0;
break;
case 'p':
cmd_parse_tree = 1;
break;
case 'r':
cmd_roll = 1;
break;
case 'e':
cmd_rolleval = 1;
break;
case 'c':
cmd_calc = 1;
break;
case 'n':
// XXX checl atoi and atof for errors (e.g. param not a number)
cmd_count = atoi(optarg);
if (cmd_count < MINIMUM_COUNT) {
fprintf(stderr, "Value for --count too low, adjusted to %i\n", MINIMUM_COUNT);
cmd_count = MINIMUM_COUNT;
}
if (cmd_count > MAXIMUM_COUNT) {
fprintf(stderr, "Value for --count too high, adjusted to %i\n", MAXIMUM_COUNT);
cmd_count = MAXIMUM_COUNT;
}
break;
case 't':
cmd_threshold = atof(optarg);
if (cmd_threshold < MINIMUM_THRESH) {
fprintf(stderr, "Value for --threshold too low, adjusted\n");
cmd_threshold = MINIMUM_THRESH;
}
if (cmd_threshold > MAXIMUM_THRESH) {
fprintf(stderr, "Value for --threshold too high, adjusted to %f\n", MAXIMUM_THRESH);
cmd_threshold = MAXIMUM_THRESH;
}
break;
case 'f':
fname = (char*)malloc((strlen(optarg)+1)*sizeof(char));
filename = fname;
strcpy(fname, optarg);
break;
default:
usage();
return 1;
}
}
if (optind < margc) {
fprintf(stderr, "useless argument \"%s\"\n", margv[optind]);
usage();
return 1;
}
if ((cmd_parse_tree == 0) && (cmd_roll == 0) && (cmd_rolleval == 0)
&& (cmd_calc == 0)) {
cmd_roll = 1;
}
// clean up the cmdline parsing
free(margv);
margv = NULL;
yyin = stdin;
if (fname) {
yyin = fopen(fname, "r");
if (yyin == NULL) {
fprintf(stderr, "Could not open file \"%s\": %s\n", fname,
strerror(errno));
free(fname);
return 1;
}
}
yyparse();
if(fname) {
free(fname);
}
return 0;
}
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