bool determine_repeating_words(void)
{
int i = 0;
struct stack_words *st = { NULL };
FILE *f;
char symbol;
bool flag = false;
if (!(f = fopen("input_file.txt", "r+t")))
{
printf("File couldn't be opened. Maybe it doesn't exist\n");
return false;
}
if (!(st = (struct stack_words*)calloc(1, sizeof(struct stack_words))) ||
!(st->word = (char*)calloc((STRING_LENGTH + 1), sizeof(char))))
{
printf("Memory is not allocated\n");
func_delete(st);
exit(-1);
}
while (1)
{
if (feof(f)) break;
fscanf(f, "%c", &symbol);
flag = true;
if (symbol >= 'a' && symbol <= 'z')
{
st->word[i++] = symbol;
}
else
{
if (i != 0)
{
st = insert_word(st, st->word);
i = 0;
}
}
}
flag = true;
flag = print_results(st);
flag = func_delete(st);
fclose(f);
return (flag == false) ? false : true;
}
struct stack_words *insert_word(struct stack_words *st, char *word)
{
struct queue_words *q_current;
struct stack_words *top = { NULL };
bool flag = false;
if (!(top = (struct stack_words*)calloc(1, sizeof(struct stack_words))) ||
!(top->word = (char*)calloc((STRING_LENGTH + 1), sizeof(char))))
{
printf("Memory is not allocated\n");
func_delete(st);
exit(-1);
}
if (q_first == NULL)
{
queue_push(st, st->word);
top->next = st;
return top;
}
else
{
q_current = q_first;
do
{
if (strcmp(q_current->word, st->word) == 0)
{
q_current->repeating_number++;
flag = true;
break;
}
q_current = q_current->next;
} while (q_current != NULL);
if (flag == false)
{
queue_push(st, st->word);
}
}
top->next = st;
return top;
}
void queue_push(struct stack_words *st, char *string)
{
struct queue_words *q;
int i = 0;
if (!(q = (struct queue_words*)calloc(1, sizeof(struct queue_words))) ||
!(q->word = (char*)calloc(WORD_LENGTH, sizeof(char))))
{
printf("Memory is not allocated\n");
func_delete(st);
exit(-1);
}
do
{
q->word[i] = string[i++];
} while (string[i] != '\0');
q->repeating_number = 1;
if (q_first == NULL) q_first = q_last = q;
else
{
q_last->next = q;
q_last = q;
}
}
int main(int argc, char *argv[])
{
void (*OldSig)(int);
OldSig=signal(SIGINT,SIG_IGN);
printf("nn************************************************************rn");
printf("* zFTP *rn");
printf("************************************************************rn");
printf(" Copyright (c) 2005rn");
printf(" All rights reserved.rn");
printf(" By Ji Surn");
if(argc > 0)
{
printf("nPlease use 'connect <system name> <user>' command to connect to a FTPserverrn");
printf("For anonymous user, please leave <user> blank.rn");
}
//Main loop starts;
//Checks on keyboard i/o for interaction and socket communication.
int exit=0;
char command[1024];
printf("nzftp>");
while(!exit) {
if( ReadCommand ) {
printf("nzftp>");
fflush(stdout);
}
if( !CheckFds(command) )
continue;
switch(check_cmd(command) ) {
case READ:
func_read(command);
break;
case WRITE:
func_write(command);
break;
case BINARY:
func_binary_mode();
break;
case ASCII:
func_ascii_mode();
break;
case CLOSE:
func_close();
break;
case CONNECT:
func_connect(command);
break;
case CD:
func_cdir(command);
break;
case DELETE:
func_delete(command);
break;
case PWD:
func_pwd(command);
break;
case LS:
func_list(command);
break;
case HELP:
func_help(command);
break;
case SHELL:
func_Shell_cmd(command);
break;
case EXIT:
exit = 1;
if( flag_connected )
func_close();
break;
default:
if(command[0] == 0 ) ;
else
printf("Invalid command: %sn",command);
break;
}
}
(void)signal(SIGINT,OldSig);
return 0;
}
