/**
*
Creates a hashtable, and inserts words into it.
The table is then printed before we free the memory allocated to it.
Note: The tablesize of the hashtable is determined by the first command line
argument if there is one, with a default table tablesize of 113.
The number of statistical snapshots to print is determined by the second
command line argument if there is one, with a default number of 10.
tablesize = the maximum number of positions in the hash table.
word = the string to be inserted into the hash table.
ht = the hash table using eith double hashing or linear probing.
snapshots = the number of statistical snapshots to be used.
@param argc the number of command-line arguments.
@param argv an array of strings containing the command-line arguments.
@return EXIT_SUCCESS if the program is successful.
*/
int main(int argc, char **argv) {
time_t start,end;
bool_t entire_table = FALSE, double_hashing = FALSE, print_stats = FALSE,
do_spell_check = FALSE;
int tablesize = 113, snapshots = 10;
char word[256];
char *filename;
htable ht;
set_flags(argc, argv, &do_spell_check, &filename, &double_hashing, &entire_table,
&print_stats, &snapshots, &tablesize);
ht = htable_new(tablesize, (double_hashing) ? DOUBLE_H : LINEAR_P);
start = clock();
while (getword(word, sizeof word, stdin) != EOF) {
htable_insert(ht, word);
}
end = clock();
if(do_spell_check) {
spell_check(ht,filename,(end-start)/(double)CLOCKS_PER_SEC);
}
if (entire_table) {
htable_print_entire_table(ht, stderr);
}
if (print_stats) {
htable_print_stats(ht, stdout, snapshots);
} else if (!do_spell_check){ /* print words and frequencies */
htable_print(ht, stdout);
}
htable_delete(ht);
return EXIT_SUCCESS;
}
errcode_t htable_fini(htable_t * self)
{
if (self->heads != NULL) {
#ifdef HTABLE_COLLECT_STATS
htable_print_stats(self);
#endif
free(self->heads);
self->heads = NULL;
}
if (self->buckets != NULL) {
free(self->buckets);
self->buckets = NULL;
}
RETURN_SUCCESSFUL;
}
/**
* main programme will be excuted.
* By default, words are read from stdin and
* added to hashtable before being printed out
* alongside their frequencies to stdout.
* @param argc an integer saying how many arguments
* there are argc for “argument count”
* @param argv an array of strings in which the arguments
* are stored (argv for “argument vector ”).
* @return integer 1 to indicate if the programme excuted successfully or not.
*/
int main(int argc, char *argv[]) {
const char *optstring = "ht:c:deps:";
char option;
char word[256];
int capacity = 113;
FILE *infile = NULL;
clock_t start, end;
hashing_t method = LINEAR_P;
double fillTime;
double searchTime;
int unknownWords = 0;
int numOfSnapshot = 0;
htable h;
char *fileToBeChecked = NULL;
int withC = 0;
int withE = 0;
int withP = 0;
int withS = 0;
/*
* Begin processing the argument from the command line
*/
while ((option = getopt(argc, argv, optstring)) != EOF) {
switch (option) {
case 't':
if (atoi(optarg) <= 0){
capacity = 113;
}else {
capacity = primegt(atoi(optarg));
}
break;
case 'd':
method = DOUBLE_H;
break;
case 'c':
withC = 1;
fileToBeChecked = optarg;
break;
case 'e':
withE = 1;
break;
case 's':
numOfSnapshot = atoi(optarg);
if (numOfSnapshot <= 0) {
numOfSnapshot = 10;
}
withS = 1;
break;
case 'p':
withP = 1;
break;
case 'h':
printHelpInfo();
return EXIT_SUCCESS;
default:
printHelpInfo();
return EXIT_FAILURE;
}
}
h = htable_new(capacity, method);
start = clock();
while (getword(word, sizeof word, stdin) != EOF) {
htable_insert(h, word);
}
end = clock();
fillTime = (end-start)/(double)CLOCKS_PER_SEC;
/* prints all the details of the table (-e argument)*/
if (withE == 1) {
htable_print_entire_table(h, stderr);
}
/* Checks the input file against a dictionary (-c <filename> argument)*/
if (withC == 1) {
/*open file and check if it is valid*/
if (NULL == (infile = fopen(fileToBeChecked, "r"))) {
fprintf(stderr, "Can't open file '%s' using mode r\n",
fileToBeChecked);
htable_free(h);
return EXIT_FAILURE;
}
start = clock();
/*Get words from input file, and search for them in the dictionary*/
while (getword(word, sizeof word, infile) != EOF) {
/*If the word isn't in the dictionary*/
if (htable_search(h, word) == 0) {
printf("%s\n", word);
unknownWords += 1;
}
}
end = clock();
fclose(infile);
searchTime = (end-start)/(double)CLOCKS_PER_SEC;
fprintf(stderr, "Fill time\t:%f\n", fillTime);
fprintf(stderr, "Search time\t:%f\n", searchTime);
fprintf(stderr, "Unknown words = %d\n", unknownWords);
htable_free(h);
return EXIT_SUCCESS;
}
/*Prints table stats (-p -s arguments)*/
if (withP == 1 && withS == 0) {
htable_print_stats(h, stdout, 10);
} else if (withP == 1 && withS == 1) {
htable_print_stats(h, stdout, numOfSnapshot);
} else {
htable_print(h, print_info);
}
htable_free(h);
return EXIT_SUCCESS;
}