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#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
#include <locale.h>
#include <math.h>
#include <iconv.h>
#include <langinfo.h>
#include <sys/types.h>
#include <sys/stat.h>
#define first_char 128
#define last_char 255
#define original_first_char 192
#define original_last_char 255
#define chars_number (last_char-first_char+1)
#define array_size (chars_number*chars_number)
struct array_pos {
int ll;
int uu;
int lu;
int ul;
};
struct pstat {
unsigned long p;
unsigned long s;
unsigned long e;
};
iconv_t icnv=(iconv_t)-1;
int end_symbol(char ch) {
if (ch=='\r'||ch=='\n'||ch==0||ch==' '||ch=='\t'||ch==','||ch=='.'||ch=='!'||ch=='?'||ch==';'||ch=='-'||ch==':'||ch=='"'||ch=='\''||ch==')') return 1;
return 0;
}
int start_symbol(char ch) {
if ((ch=='\t')||ch=='\r'||ch=='\n'||(ch==' ')||(ch=='(')||(ch=='"')||(ch=='\'')) return 1;
return 0;
}
unsigned char convert_char(unsigned char c) {
char r;
char *pr, *pc;
size_t lr=1,lc=1;
pr=&r;pc=&c;
if (icnv == (iconv_t)-1) return c;
if (iconv(icnv,&pc,&lc,&pr,&lr)<0) {
printf("Error converting characters!\n");
exit(1);
}
return r;
}
int get_array_pos(struct array_pos *pos, int a, int b) {
int la,ua,lb,ub;
if ((a<original_first_char)||(a>original_last_char)) return -1;
if ((b<original_first_char)||(b>original_last_char)) return -1;
la=tolower(a);
ua=toupper(a);
lb=tolower(b);
ub=toupper(b);
if ((la<original_first_char)||(la>original_last_char)) la=a;
if ((lb<original_first_char)||(lb>original_last_char)) lb=b;
if ((ua<original_first_char)||(ua>original_last_char)) ua=a;
if ((ub<original_first_char)||(ub>original_last_char)) ub=b;
la=convert_char(la);
ua=convert_char(ua);
lb=convert_char(lb);
ub=convert_char(ub);
// la=a;lb=b;ua=a;ub=b;
pos->ll=(la-first_char)*chars_number+(lb-first_char);
if (la!=ua) {
pos->ul=(ua-first_char)*chars_number+(lb-first_char);
} else {
pos->ul=-1;
}
if (lb!=ub) {
pos->lu=(la-first_char)*chars_number+(ub-first_char);
}
else {
pos->lu=-1;
}
if ((lb!=ub)&&(la!=ua)) {
pos->uu=(ua-first_char)*chars_number+(ub-first_char);
} else {
pos->uu=-1;
}
return 0;
}
struct pstat *analyze(const unsigned char *text, unsigned long length) {
struct pstat *a;
unsigned long i;
struct array_pos pos;
a=(struct pstat*)malloc(array_size*sizeof(struct pstat));
if (!a) return NULL;
for (i=0;i<array_size;i++) {
a[i].p=0;
a[i].s=0;
a[i].e=0;
}
for (i=1;i<length;i++) {
if (get_array_pos(&pos,text[i-1],text[i])>=0) {
if (pos.ll>=0) {
if ((i==1)||(start_symbol(text[i-2]))) a[pos.ll].s++;
else if ((i+2==length)||(end_symbol(text[i+1]))) a[pos.ll].e++;
else a[pos.ll].p++;
}
if (pos.ul>=0) {
if ((i==1)||(start_symbol(text[i-2]))) a[pos.ul].s++;
else if ((i+2==length)||(end_symbol(text[i+1]))) a[pos.ul].e++;
else a[pos.ul].p++;
}
// if (pos.lu>=0) {
// if ((i==1)||(start_symbol(text[i-2]))) a[pos.lu].s++;
// else if ((i+2==length)||(end_symbol(text[i+1]))) a[pos.lu].e++;
// else a[pos.lu].p++;
// }
if (pos.uu>=0) {
if ((i==1)||(start_symbol(text[i-2]))) a[pos.uu].s++;
else if ((i+2==length)||(end_symbol(text[i+1]))) a[pos.uu].e++;
else a[pos.uu].p++;
}
}
}
return a;
}
int print(struct pstat *a) {
int i,j,k,n;
for (i=first_char,k=0,n=0;i<=last_char;i++)
for (j=first_char;j<=last_char;j++,k++) {
if ((a[k].p)||(a[k].s)||(a[k].e)) {
if ((n)&&(n%8==0)) printf(",\n");
else if (n) printf(", ");
printf("{'%c','%c',%lf,%lf,%lf}",i,j,a[k].p?log10(a[k].p):-2,a[k].s?log10(a[k].s):-2,a[k].e?log10(a[k].e):-2);
n++;
}
}
if ((n%8)!=1) printf("\n");
return n;
}
unsigned long npow(unsigned long n) {
unsigned long res=2;
while (res<=n) res*=2;
return res;
}
main(int argc, char *argv[]) {
FILE *f;
struct stat st;
unsigned char *text;
unsigned long len;
struct pstat *a;
int num;
long i,sum;
char locale[32];
if (argc!=3) {
printf("Usage: %s <file name> <encoding>\n",argv[0]);
exit(0);
}
if (strlen(argv[2])>12) {
printf("Invalid encoding(%s) specified!\n",argv[2]);
exit(1);
}
if ((!strcasecmp(argv[2],"koi"))||(!strcasecmp(argv[2],"koi8"))||(!strcasecmp(argv[2],"koi-8"))||(!strcasecmp(argv[2],"koi8-r")))
sprintf(locale,"%s","KOI8-R");
else if ((!strcasecmp(argv[2],"win"))||(!strcasecmp(argv[2],"cp1251"))||(!strcasecmp(argv[2],"cp-1251"))||(!strcasecmp(argv[2],"win1251"))||(!strcasecmp(argv[2],"win-1251")))
sprintf(locale,"%s","CP1251");
else if ((!strcasecmp(argv[2],"alt"))||(!strcasecmp(argv[2],"cp866"))||(!strcasecmp(argv[2],"cp-866"))||(!strcasecmp(argv[2],"ibm866"))||(!strcasecmp(argv[2],"ibm-866")))
sprintf(locale,"%s","IBM866");
else
sprintf(locale,"%s",argv[2]);
if (!setlocale(LC_CTYPE,"")) {
printf("Can't set locale!\n");
exit(1);
}
if (strcmp(locale,nl_langinfo(CODESET))) {
if ((icnv=iconv_open(locale,nl_langinfo(CODESET)))<0) {
printf("Can't initialize iconv!\n");
exit(1);
}
}
if (stat(argv[1],&st)) {
printf("Specified file can't be stated!\n");
iconv_close(icnv);
exit(1);
}
if (!S_ISREG(st.st_mode)) {
printf("Specified file isn't regular file!\n");
iconv_close(icnv);
exit(1);
}
text=(unsigned char*)malloc(st.st_size);
if (!text) {
printf("Can't allocate %lu bytes of memory!\n",st.st_size);
iconv_close(icnv);
exit(1);
}
f=fopen(argv[1],"r");
if (!f) {
printf("Failed to open specified file. Check permissions!\n");
free(text);
iconv_close(icnv);
exit(1);
}
if (fread(text,1,st.st_size,f)!=st.st_size) {
printf("Problem reading specified file!\n");
free(text);
fclose(f);
iconv_close(icnv);
exit(1);
}
fclose(f);
a=analyze(text,st.st_size);
if (a) {
printf("static const lng_stat2 enc_%s[]={\n",argv[2]);
num=print(a);
printf("};\n\n");
free(a);
fprintf(stderr,"static unsigned int indexes2=%lu;\n",num);
fprintf(stderr,"static unsigned int npow2=%lu;\n",npow(num));
} else printf("Failed to allocate %lu bytes of memory!\n",array_size*sizeof(struct pstat));
free(text);
iconv_close(icnv);
}
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