#include <stdio.h>

#include "SDL.h"

{

	Uint32 *p = (Uint32 *)data;

	while(*p) {

		if ( *p > 0x10FFFF ) {

			return SDL_FALSE;

		}

		++p;

	}

	return SDL_TRUE;

}

static size_t widelen(char *data)

{

	size_t len = 0;

	Uint32 *p = (Uint32 *)data;

	while(*p++) {

		++len;

	}

	return len;

}

int main(int argc, char *argv[])

{

	const char * formats[] = {

		"UTF8",

		"UTF-8",

		"UTF16BE",

		"UTF-16BE",

		"UTF16LE",

		"UTF-16LE",

		"UTF32BE",

		"UTF-32BE",

		"UTF32LE",

		"UTF-32LE",

		"UCS4",

		"UCS-4",

	};

	char buffer[BUFSIZ];

	char *ucs4;

	char *test[2];

	int i, j, index = 0;

	FILE *file;

	int errors = 0;

	if ( !argv[1] ) {

		argv[1] = "utf8.txt";

	}

	file = fopen(argv[1], "rb");

	if ( !file ) {

		fprintf(stderr, "Unable to open %s\n", argv[1]);

		return (1);

	}

	while ( fgets(buffer, sizeof(buffer), file) ) {

		/* Convert to UCS-4 */

		ucs4 = SDL_iconv_string("UCS-4", "UTF-8", buffer, SDL_strlen(buffer)+1);

		size_t len = (widelen(ucs4)+1)*4;

		for ( i = 0; i < SDL_arraysize(formats); ++i ) {

			if ( (SDL_strncasecmp(formats[i], "UTF16", 5) == 0 ||

				continue;

			}

			test[0] = SDL_iconv_string(formats[i], "UCS-4", ucs4, len);

			test[1] = SDL_iconv_string("UCS-4", formats[i], test[0], len);

			if ( SDL_memcmp(test[1], ucs4, len) != 0 ) {

				fprintf(stderr, "FAIL: %s\n", formats[i]);

				++errors;

			}

			SDL_free(test[0]);

			SDL_free(test[1]);

		}

		test[0] = SDL_iconv_string("UTF-8", "UCS-4", ucs4, len);

		SDL_free(ucs4);

		fputs(test[0], stdout);

		SDL_free(test[0]);

	}

	return (errors ? errors + 1 : 0);

}