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#include 

//#include 

typedef unsigned int size_t;

#define NULL ((void*)0)

typedef int conv_t;

typedef unsigned int ucs4_t;

typedef int iconv_t;

/* Return code if invalid input after a shift sequence of n bytes was read.

   (xxx_mbtowc) */

#define RET_SHIFT_ILSEQ(n)  (-1-2*(n))

/* Return code if invalid. (xxx_mbtowc) */

#define RET_ILSEQ           RET_SHIFT_ILSEQ(0)

/* Return code if only a shift sequence of n bytes was read. (xxx_mbtowc) */

#define RET_TOOFEW(n)       (-2-2*(n))

/* Return code if invalid. (xxx_wctomb) */

#define RET_ILUNI      -1

/* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */

#define RET_TOOSMALL   -2

#define CP866 0

#define CP1251 1

#define CP1252 2

#define KOI8_RU 3

#define ISO8859_5 4

#define UTF_8 5

#include "cp866.h"

#include "cp1251.h"

#include "cp1252.h"

#include "koi8_ru.h"

#include "iso8859_5.h"

#include "utf8.h"

int encoding(char *what) {

	/* Ignore //TRANSLIT or //IGNORE for now. */

	int i;

	for(i = 0; i < strlen(what); i++) {

	  if(what[i] == '/') {

		what[i] = '\0';

		break;

	  }

	}

	if (!strcasecmp(what,"CP866")) return CP866;

	if (!strcasecmp(what,"CP1251")) return CP1251;

	if (!strcasecmp(what,"windows-1252")) return CP1252;

	if (!strcasecmp(what,"CP1252")) return CP1252;

	if (!strcasecmp(what,"KOI8-RU")) return KOI8_RU;

	if (!strcasecmp(what,"ISO8859-5")) return ISO8859_5;

	if (!strcasecmp(what,"UTF-8")) return UTF_8;

	return -1;

}

iconv_t iconv_open(const char *tocode, const char *fromcode) {

	int to, from;

	if ((to=encoding(tocode))==-1) return -1;

	if ((from=encoding(fromcode))==-1) return -1;

	to=to<<16&0xFFFF0000;

	from=from&0xFFFF;

	return to+from;

}

int iconv_close(iconv_t icd)

{

  return 0;

}

size_t iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft,

	char **outbuf, size_t *outbytesleft)

{

	int n, to, from, count1,count2;

	int pwc, converted,written;

	int (*mbtowc)(conv_t, ucs4_t *, const unsigned char *, int);

	int (*wctomb)(conv_t, ucs4_t *, const unsigned char *, int);

	char *str;

	str=*outbuf;

	from=cd>>16;

	to=cd&0xFFFF;

	switch (from)

	{

		case CP866: mbtowc=cp866_mbtowc; break;

		case CP1251: mbtowc=cp1251_mbtowc; break;

		case CP1252: mbtowc=cp1252_mbtowc; break;

		case ISO8859_5: mbtowc=iso8859_5_mbtowc; break;

		case KOI8_RU: mbtowc=koi8_ru_mbtowc; break;

		case UTF_8: mbtowc=utf8_mbtowc; break;

		default: return -2;

	}

	switch (to)

	{

		case CP866: wctomb=cp866_wctomb; break;

		case CP1251: wctomb=cp1251_wctomb; break;

		case CP1252: wctomb=cp1252_wctomb; break;

		case ISO8859_5: wctomb=iso8859_5_wctomb; break;

		case KOI8_RU: wctomb=koi8_ru_wctomb; break;

		case UTF_8: wctomb=utf8_wctomb; break;

		default: return -3;

	}

    if(from == to) {

      int oc=0,ic=0;

      while(*inbytesleft > 0 && *outbytesleft > 0) {

        str[oc]=(*inbuf)[ic];

        ++ic;

        ++oc;

        (*inbytesleft)--;

        (*outbytesleft)--;

        (*outbuf)++;

      }

      return 0;

    }

	count1=0;

	count2=0;

	while ( *inbytesleft>0 && *outbytesleft>1)

	{

		n=1;

		do {

		//converted= (utf8_mbtowc)(0,&pwc,((*inbuf)+count1),n);

		//	printf("%d\n",n);

		converted= (mbtowc)(0,&pwc,((*inbuf)+count1),n);

		n++;

		}	while (converted==RET_TOOFEW(0));

		if (converted<0) return -10;

		//written=  (cp866_wctomb)(0,str+count2,pwc,1);

		written=  (wctomb)(0,str+count2,pwc,1);

		if (written<0) written=0;//return -11;

		//printf("Conv:%d Wri:%d In:%d Out:%d UTF:%x UCS:%x 866:%s\n",converted, written, *inbytesleft,*outbytesleft,*((*inbuf)+count1),pwc, str);

		(*inbytesleft)-=converted;

		(*outbytesleft)-=written;

		(*outbuf)+=written;

		count1+=converted;

		count2+=written;

	}

	*(str+count2)='\0';

	if (*inbytesleft>0 && *outbytesleft==0) return -12;

	return 0;

}

/*

int main()

{

	char *s;// ="вертолет";

	char *z;

	//unsigned int pwc;

	iconv_t cd;

	int in, out;

		FILE *infile;

		char *fname = "file.txt";

		infile = fopen(fname,"r");

	fseek(infile, 0, SEEK_END);

	size_t file_size = ftell(infile);

	rewind(infile);

	//printf ("LOL\n");

	char *buffer = (char*)malloc(file_size * sizeof(char));

	if (buffer == NULL)

	{

		fclose(infile);

		printf("Error allocating %d bytes.\n", file_size * sizeof(char));

		return -1;

	}

	size_t bytes_read = fread(buffer, sizeof(char), file_size, infile);

	if (bytes_read != file_size)

	{

		printf("Have read only %d bytes of %d.\n", bytes_read, file_size);

		free(buffer);

		fclose(infile);

		return -1;

	}

	in=strlen(buffer);

	z=malloc(in+1);

	out=in+1;

	cd=iconv_open("CP1251","CP866");

//	printf("%x\n",cd);

	int t;

	t=iconv(cd, &buffer, &in, &z, &out);

	printf("\nResult: %d", t);

	puts(z);

	//for (;s

}

*/

typedef struct

{

	char *name;

	void *f;

} export_t;

char szStart[]           = "START";

char szVersion[]         = "version";

char sziconv_open[]    = "iconv_open";

char sziconv[]   = "iconv";

export_t EXPORTS[] __asm__("EXPORTS") =

{

	{ szStart,       (void*)0x0 },

	{ szVersion,     (void*)0x00010001 },

	{ sziconv_open,  iconv_open    },

	{ sziconv,       iconv   },

	{ NULL,          NULL },

};