wildcard.cpp

#include "includes.h"
#include "functions.h"
#include "externs.h"

#ifndef NO_WILDCARD

int wildcardfit(char *wildcard, char *test)
{
	int fit = 1;
  
	for (; ('\000' != *wildcard) && (1 == fit) && ('\000' != *test); wildcard++) {
		switch (*wildcard) {
		case '[':
			wildcard++;
			fit = set (&wildcard, &test);
			break;
		case '?':
			test++;
			break;
		case '*':
			fit = asterisk (&wildcard, &test);
			wildcard--;
			break;
		default:
			fit = (int) (*wildcard == *test);
			test++;
		}
	}
	while ((*wildcard == '*') && (1 == fit)) 
		wildcard++;

	return ((int) ((1 == fit) && ('\0' == *test) && ('\0' == *wildcard)));
}

int set(char **wildcard, char **test)
{
	int fit = 0, negation = 0, at_beginning = 1;

	if ('!' == **wildcard) {
		negation = 1;
		(*wildcard)++;
	}
	while ((']' != **wildcard) || (1 == at_beginning)) {
		if (0 == fit) {
			if (('-' == **wildcard) && ((*(*wildcard - 1)) < (*(*wildcard + 1)))
				&& (']' != *(*wildcard + 1)) && (0 == at_beginning)) {
				if (((**test) >= (*(*wildcard - 1))) && ((**test) <= (*(*wildcard + 1)))) {
					fit = 1;
					(*wildcard)++;
				}
			}
			else if ((**wildcard) == (**test))
              fit = 1;
		}
		(*wildcard)++;
		at_beginning = 0;
	}
	if (1 == negation)
		fit = 1 - fit;
	if (1 == fit) 
		(*test)++;

	return (fit);
}

int asterisk(char **wildcard, char **test)
{
	int fit = 1;

	(*wildcard)++; 
	while (('\000' != (**test)) && (('?' == **wildcard) || ('*' == **wildcard))) {
		if ('?' == **wildcard) 
			(*test)++;
		(*wildcard)++;
	}
	while ('*' == (**wildcard))
		(*wildcard)++;

	if (('\0' == (**test)) && ('\0' != (**wildcard)))
		return (fit = 0);
	if (('\0' == (**test)) && ('\0' == (**wildcard)))
		return (fit = 1); 
	else {
		if (0 == wildcardfit(*wildcard, (*test))) {
			do {
				(*test)++;
				while (((**wildcard) != (**test)) && ('['  != (**wildcard)) && ('\0' != (**test)))
					(*test)++;
			} while ((('\0' != **test))?(0 == wildcardfit ((char *)*wildcard, (*test))):(0 != (fit = 0)));
		}
		if (('\0' == **test) && ('\0' == **wildcard))
			fit = 1;
		return (fit);
	}
}
#endif