Украинский язык в консоле - C++ - Ответ 2903929

// ÃÎÑÒ 28147-89.cpp : Defines the entry point for the console application.
//
 
#include <cstdio>
#include <iostream>
using namespace std;
 
// òàáëèöà çàìåí
 char Tab_Z[8][16] =
 {
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF
 };
 
// êëþ÷èê
 unsigned long key[8] =
 {
  0x0123,
  0x4567,
  0x89AB,
  0xCDEF,
  0x0123,
  0x4567,
  0x89AB,
  0xCDEF
 };
 
 
//---------------------------------------------------------------------------
// âçÿòî èç õåëïà, îïðåäåëÿåì ðàçìåð ôàéëà
long filesize(FILE *stream)
{
 long curpos, length;
 curpos = ftell(stream);
 fseek(stream, 0L, SEEK_END);
 length = ftell(stream);
 fseek(stream, curpos, SEEK_SET);
 return length;
}
 
// ôóíêöèÿ, ðåàëèçóþùàÿ ðàáîòó ÃÎÑÒ 28147-89 â ðåæèìå ïðîñòîé çàìåíû
void rpz(int rezh, char* opener, char* saver)
{
    int i,q,k;
    FILE *f_begin, *f_end; // ïîòîêè äëÿ èñõîäíîãî è êîíå÷íîãî ôàéëîâ
    char N[4]; // 32-ðàçðÿäíûé íàêîïèòåëü,
    unsigned long n1=0, n2=0, SUM232=0; // íàêîïèòåëè N1, N2, è ñóììàòîð
 
    // îòêðûâàåì ôàéëû
    f_begin = fopen (opener,"rb");
    f_end = fopen (saver,"wb");
 
    // îïðåäåëèì êîëè÷åñòâî áëîêîâ
    float blokoff;
    blokoff = 8*filesize(f_begin);
    blokoff = blokoff/64;
    int block = blokoff;
    if (blokoff-block>0) 
        block++;
    
    int sh;
    if (filesize(f_begin)>=4) 
        sh = 4; 
    else 
        sh = filesize(f_begin);
    int sh1 = 0;
    int flag=0;
 
    // íà÷íåì ñ÷èòûâàíèå è ïðåîáðàçîâàíèå áëîêîâ
    // ïðèñóòñòâóþò ïðîâåðêè íà ïîëíîòó áëîêîâ, ÷òîáû ñ÷èòàòü òîëüêî íóæíîå êîëè÷åñòâî áèò
 for (i=0; i<block; i++)
 {
  // çàïèñûâàåì â íàêîïèòåëü N1
  for (q=0; q<4; q++) *((char *)&N+q) = 0x00;
  if ((sh1+sh)<filesize(f_begin))
  {
   fread (N,sh,1,f_begin);
   sh1+=sh;
  }
  else
  {
   sh=filesize(f_begin)-sh1;
   fread (N,sh,1,f_begin);
   flag=1;
  }
  n1 = *((unsigned long *)&N);
 
  // çàïèñûâàåì â íàêîïèòåëü N2
  for (q=0; q<4; q++) *((char *)&N+q) = 0x00;
  if ((sh1+sh)<filesize(f_begin))
  {
   fread (N,sh,1,f_begin);
   sh1+=sh;
  }
  else
  {
   if (flag==0)
   {
    sh=filesize(f_begin)-sh1;
    fread (N,sh,1,f_begin);
   } 
  }
  n2 = *((unsigned long *)&N);
 
  // 32 öèêëà ïðîñòîé çàìåíû
  // êëþ÷ ñ÷èòûâàåì â òðåáóåìîì ÃÎÑÒîì ïîðÿäêå
  int c = 0;
  for (k=0; k<32; k++)
  {
   if (rezh==1) { if (k==24) c = 7; }
    else { if (k==8) c = 7; }
 
   // ñóììèðóåì â ñóììàòîðå ÑÌ1
   SUM232 = key[c] + n1;
 
   // çàìåíÿåì ïî òàáëèöå çàìåí
   char first_byte=0,second_byte=0,zam_symbol=0;
   int n = 7;
   for (int q=3; q>=0; q--)
   {
    zam_symbol = *((char *)&SUM232+q);
    first_byte = (zam_symbol & 0xF0) >> 4;
    second_byte = (zam_symbol & 0x0F);
    first_byte = Tab_Z[n][first_byte];
    n--;
    second_byte = Tab_Z[n][second_byte];
    n--;
    zam_symbol = (first_byte << 4) | second_byte;
    *((char *)&SUM232+q) = zam_symbol;
   } 
   
   SUM232 = (SUM232<<11)|(SUM232>>21); // öèêëè÷åñêèé ñäâèã íà 11
   SUM232 = n2^SUM232; // ñêëàäûâàåì â ñóììàòîðå ÑÌ2
 
   if (k<31)
   {
    n2 = n1;
    n1 = SUM232;
   }
   if (rezh==1)
   {
    if (k<24)
    {
     c++;
     if (c>7) c = 0;
    }
    else
    {
     c--;
     if (c<0) c = 7;
    }
   }
   else
   {
    if (k<8)
    {
     c++;
     if (c>7) c = 0;
    }
   else
   {
    c--;
    if (c<0) c = 7;
   }
  }
 }
 n2 = SUM232;
 
 // âûâîä ðåçóëüòàòà â ôàéë
  char sym_rez;
  for (q=0; q<=3; q++)
  {
   sym_rez = *((char *)&n1+q);
   fprintf(f_end, "%c", sym_rez);
  }
  for (q=0; q<=3; q++)
  {
   sym_rez = *((char *)&n2+q);
   fprintf(f_end, "%c", sym_rez);
  }
 }
 fclose (f_begin);
 fclose (f_end);
}
 
//---------------------------------------------------------------------------
// âûáèðàåì øèôðîâàíèå èëè ðàñøèôðîâàíèå
int main(int argc, char * argv [])
{
    system("chcp 1251");
    int rezhim;
    do
    {
        cout<<"Áóäüëàñêà, âèáåð³òü ðåæèì ðîáîòû:\n"
            "Øèôðóâàííÿ - 1\nÐîçøèôðóâàííÿ - 2\n";
        cin>> rezhim;
    } 
    while ((rezhim!=1)&&(rezhim!=2)); // ïîâòîðÿåì äî òåõ ïîð, ïîêà íå áóäåò ââåäåíî 1 èëè 
    
    // âûáèðàåì èñõîäíûé è êîíå÷íûé ôàéëû (ñëýø '\' â ïóòè ïèñàòü êàê '\\') 
    char open_str[50], save_str[50];
    cout<<"\nÂâåä³òü ïóòü äî ïåðâèííîãî ôàéëó\n";
    cin>> open_str;
    cout<<"\nÂâåäèòå ïóòü äî ôàéëó, â ÿêèé òðåáà çàïèñàòè ðåçóëüòàò\n";
    cin>> save_str;
    rpz(rezhim, open_str, save_str); // çàïóñêàåì ÐÏÇ
    system("pause");
    return 0;
}