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/*
* main.c - v1.7 - 28 Mar 1999
* (c) Stevie Strickland, 1999
*
* This program has been placed under the GPL. Any bugfixes or enhancements
* will be greatly appreciated :)
*
* Stevie Strickland - sstrickl@resnet.gatech.edu
*/
#include "rolldice.h"
// The version number :)
static const int MAJOR_VERSION = 1;
static const int MINOR_VERSION = 7;
// Stores the random number file to use
static int rand_file;
// Should we print out the separate results of the dice rolls or not?
static int print_separate;
/*
* print_usage() - Prints the usage for rolldice
*
* Parameters: none
* Returns: none
*/
static void print_usage() {
fprintf(stderr, "Usage: rolldice [options] <dice string>\n");
fprintf(stderr, "For dice string format and options, ");
fprintf(stderr, "see rolldice(6).\n");
exit(EXIT_FAILURE);
}
/*
* print_version() - Prints the version number
*
* Parameters: none
* Returns: none
*/
static void print_version() {
printf("rolldice, v%d.%d\n", MAJOR_VERSION, MINOR_VERSION);
printf("Written by Stevie Strickland (sstrickl@resnet.gatech.edu)\n");
exit(EXIT_SUCCESS);
}
/*
* print_opt_error() - Prints out the error for an unknown option
*
* Parameters: option - unknown option to print out
* Returns: none
*/
static void print_opt_error(char *option) {
fprintf(stderr, "%s: Unknown option\n", option);
print_usage();
}
/*
* parse_options() - Parse the command-line options
*
* Parameters: String to parse for options
* Returns: none
*/
static void parse_options(char *option) {
option++;
if(*option == '-') {
option++;
if((strcmp(option, "version")) == 0) print_version();
else if((strcmp(option, "help")) == 0) print_usage();
else if((strcmp(option, "urandom")) == 0) {
rand_file = URANDOM;
}
else if((strcmp(option, "random")) == 0) {
rand_file = RANDOM;
}
else if((strcmp(option, "separate")) == 0) print_separate = TRUE_VAL;
else print_opt_error(option);
}
else {
while((strcmp(option, "")) != 0) {
switch(*option) {
case 'h': print_usage();
case 'v': print_version();
case 'u': rand_file = URANDOM; break;
case 'r': rand_file = RANDOM; break;
case 's': print_separate = TRUE_VAL; break;
default: print_opt_error(option);
}
option++;
}
}
}
/* print_rolls() - Prints the rolls, either just the totals or the
* separate rolls, also.
*
* Parameters: Dice string with which to calculate dice rolls
* Returns: None
*/
void print_rolls(int *dice_nums) {
int i, j, k, temp_int, temp_index, temp_total;
int temp_roll[dice_nums[NUM_DICE]];
for(i = 0; i < dice_nums[NUM_ROLLS]; i++) {
temp_total = 0;
if(print_separate) printf("Roll #%d: (", i+1);
for(j = 0; j < dice_nums[NUM_DICE]; j++) {
temp_roll[j] = rolldie(dice_nums[NUM_SIDES]);
if(print_separate) printf("%d ", temp_roll[j]);
temp_total += temp_roll[j];
}
for(j = 0; j < dice_nums[NUM_DROP]; j++) {
temp_int = MAXSHORT;
for(k = 0; k < dice_nums[NUM_DICE]; k++)
if(temp_int > temp_roll[k]) {
temp_int = temp_roll[k];
temp_index = k;
}
if(print_separate) printf("- %d ", temp_int);
temp_total -= temp_int;
temp_roll[temp_index] = MAXSHORT;
}
if(print_separate) printf(") ");
if(dice_nums[MULTIPLIER] != 1) {
if(print_separate) printf("* %d ", dice_nums[MULTIPLIER]);
temp_total *= dice_nums[MULTIPLIER];
}
if(dice_nums[MODIFIER]) {
if(print_separate) printf("+ %d ", dice_nums[MODIFIER]);
temp_total += dice_nums[MODIFIER];
}
if(print_separate) printf("= ");
printf("%d ", temp_total);
if(print_separate) printf("\n");
}
if(!print_separate) printf("\n");
}
int main(int argc, char **argv) {
int index, *totals, *dice_nums;
dice_nums = NULL;
init_random(rand_file);
if ( argc < 2 ) {
print_usage();
} else {
for ( index = 1; index < argc; index++ ) {
if ( *argv[index] == '-' ) parse_options(argv[index]);
else {
dice_nums = parse_string( argv[index] );
print_rolls(dice_nums);
free(dice_nums);
}
}
}
if ( dice_nums == NULL ) {
fprintf(stderr, "%s: Failure in getting dice attributes\n", argv[0]);
return 1;
}
return EXIT_SUCCESS;
}
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