/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
//#include "common/textconsole.h"

#ifdef isdigit
#undef isdigit
#endif
#define isdigit(c) ((c) >= '0' && (c) <= '9')
#define TEST 1

//
// simple sscanf replacement to match scummvm usage patterns
//

extern double strtod__(const char *start, char **end);

inline void skipArg(const char **in, const char *fmt) {
	printf("before skip args in = %s and format = %s\n", *in, fmt);
	while (*fmt != '%') {
		fmt++; // should skip one char but don't
	}
	(*in)++;

	printf("skipped input string: %s and format: %s\n", *in, fmt);
}

extern "C" int simple_sscanf(const char *input, const char *format, ...) {
	va_list ap;
	int result = 0;
	const char *next = input;

	va_start(ap, format);

	while (*format) {
		if (*format == '%') {
			format++;
			int max = 0;
			while (isdigit(*format)) {
				max = (max * 10) + (*format - '0');
				format++;
			}

			bool err = false;

			switch (*format++) {
			case '*':
//			    while (*format != '%') {
//                    format++;}
//                *(next++);
				skipArg(&next, format);
				printf("after skipArg next = %s and format = %s\n", next, format);
				break;
			default:
				printf("Unknown format specifier: \t%s \n", format);
				err = true;
				break;
			}

			if (err) {
				break;
			} else {
				result++;
			}
		} else if (*format++ != *next++) {
			// match input
			break;
		}
	}

	va_end(ap);
	return result;
}

#if 1 //defined(TEST_SSCANF)
int main(int argc, char *argv[]) {

	char tt[5] = {0};

    printf("\nStart test skipping arg\n");
	printf("\nCurrent args num: %d\t and arg =",
			simple_sscanf("abcd", "%*c%c", &tt[0]));
	printf("%c\n", tt[0]);

	printf("this is normal sscanf result:");
	printf("\nCurrent args num: %d\t and arg =",
			sscanf("abcd", "%*c%c", &tt[0]));
	printf("%c\n", tt[0]);

	return 0;
}
#endif