Ticket #172: csdet.c

#include <stdio.h>

short frequencies[] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
        513, 1000, -196, -338, 497, -1420, -1356, -850, 452, -1961, -1513, 726, -2247, -367, 1490, -1300, 
        -158, -2306, -1420, 16, 352, 226, -330, -1495, 0, 959, 1308, 0, 0, 0, 0, 0, 
        0, 1845, 1743, 2658, 234, -4533, -1098, -1782, -1138, 2185, 3159, 4390, -1125, 2217, -2643, 647, 
        297, -4997, -3176, -4854, -505, -1176, 744, -1243, -2163, 3706, 763, 0, 0, 0, 0, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 628, 0, 0, 0, 363, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3989, 0, -1279, 513, 4714, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2405, 0, 0, 0, 0, 0, 
        0, 0, 0, 0, 0, 0, 1777, 0, 0, 0, 6035, 0, 0, 0, 0, 0, 
        -1107, 0, 0, 811, -639, 0, 0, -1107, 725, -745, 0, 0, 0, 0, 1986, 0, 
        0, 0, 0, 0, 0, 0, 0, 0, 888, 0, 0, 0, 0, 0, 725, -1567, 
        -3675, 6477, 2190, 10702, -1107, 0, 0, -2306, -824, -2951, -3262, 0, 5665, 6755, 2178, 1622, 
        0, 0, 811, 1088, -1430, 0, -1567, 0, 4352, 1048, 725, -904, -1107, 3343, 4616, 0, };

int main(int argc, char *argv[])
{
        FILE *text = fopen(argv[1],"r");
        int frcount = 0;
        int c;
        
        while ((c = fgetc(text)) != EOF) {
                frcount += frequencies[c];
        }
        
        printf("%s @ %d\n",(frcount>0)?"latin-2":"latin-1",frcount);
}

/*
 
#include <stdio.h>
#include <math.h>
 
 static unsigned int freq1[256] = {0}, freq2[256] = {0};
 static unsigned total1=0, total2=0;
 
 static int freqforc(unsigned char i) 
 {
         double fr1 = (freq1[i]) / (double)total1,
         fr2 = (freq2[i]) / (double)total2;
         
         double diff = sqrt(fr2) - sqrt(fr1);
         
         return diff * 65536. + .5;
 }
 
 int main(int argc, char *argv[])
 {
         FILE *text = fopen(argv[1],"r");
         int c, i, j;
         
         while ((c = fgetc(text)) != EOF) {
                 if (c >= 0x40) {
                         freq1[c]++; total1++;
                 }
         }
         
         fclose(text);
         
         text = fopen(argv[2],"r");
         
         while ((c = fgetc(text)) != EOF) {
                 if (c >= 0x40) {
                         freq2[c]++; total2++;
                 }
         }
         
         printf("short frequencies[] = {");
         
         for (i = 0; i <= 0xff; i++) {
                 if (!(i & 0xf)) printf("\n");
                 printf("%d, ",freqforc(i));
         }
         
         printf("};\n");
         
         return 0;
 }
 
*/