#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include "libcpuid.h"
#include "libcpuid_util.h"

void match_features(const struct feature_map_t* matchtable, int count, uint32_t reg, struct cpu_id_t* data)
{
	int i;
	for (i = 0; i < count; i++)
		if (reg & (1u << matchtable[i].bit))
			data->flags[matchtable[i].feature] = 1;
}

static int xmatch_entry(char c, const char* p)
{
	int i, j;
	if (c == 0) return -1;
	if (c == p[0]) return 1;
	if (p[0] == '.') return 1;
	if (p[0] == '#' && isdigit(c)) return 1;
	if (p[0] == '[') {
		j = 1;
		while (p[j] && p[j] != ']') j++;
		if (!p[j]) return -1;
		for (i = 1; i < j; i++)
			if (p[i] == c) return j + 1;
	}
	return -1;
}

int match_pattern(const char* s, const char* p)
{
	int i, j, dj, k, n, m;
	n = (int) strlen(s);
	m = (int) strlen(p);
	for (i = 0; i < n; i++) {
		if (xmatch_entry(s[i], p) != -1) {
			j = 0;
			k = 0;
			while (j < m && ((dj = xmatch_entry(s[i + k], p + j)) != -1)) {
				k++;
				j += dj;
			}
			if (j == m) return i + 1;
		}
	}
	return 0;
}

struct cpu_id_t* get_cached_cpuid(void)
{
	static int initialized = 0;
	static struct cpu_id_t id;
	if (initialized) return &id;
	if (cpu_identify(NULL, &id))
		memset(&id, 0, sizeof(id));
	initialized = 1;
	return &id;
}

int match_all(uint64_t bits, uint64_t mask)
{
	return (bits & mask) == mask;
}