#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include <sqlite3ext.h>



SQLITE_EXTENSION_INIT1
static void
streq(sqlite3_context *const ctx, const int argc, sqlite3_value **const argv) {
	assert(argc == 2);
	const char *const str1 = (const char *)sqlite3_value_text(argv[0]);
	const char *const str2 = (const char *)sqlite3_value_text(argv[1]);
	const bool equal = strcmp(str1, str2) == 0;
	const int result = equal ? 1 : 0;
	sqlite3_result_int(ctx, result);
}

int
sqlite3_extension_init(
	sqlite3 *const db,
	const char *const *const errmsg,
	const sqlite3_api_routines *const api
) {
	SQLITE_EXTENSION_INIT2(api);
	return sqlite3_create_function(
		db,
		"streq",
		2,
		SQLITE_UTF8,
		(void *)db,
		streq,
		NULL,
		NULL
	);
}