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/***********************************************************************
** **
** file2 : եΥɥå **
** **
** : **
** **
** : **
** v1.0 ????/??/?? **
** **
** v1.1 1993/07/23 **
** DOS^ZASCIIʸ˴ޤˤ **
** **
***********************************************************************/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#define BUFF_SIZE 4096
#define TRUE 1
#define FALSE 0
#define ASCII 1
#define EUC 2
#define SJIS 3
#define JIS 4
#define EMPTY 5
#define UNKOWN 99
/* Υ */
#define ESC_DALLER_B 1 /* ESC-$-B */
#define ESC_DALLER_ATMARK 2 /* ESC-$-@ */
/* ȤΥ */
#define ESC_LEFT_PARA_B 1 /* ESC-(-B */
#define ESC_LEFT_PARA_J 2 /* ESC-(-J */
typedef unsigned char uchar;
int kanji_in_type;
int kanji_out_type;
main(argc,argv)
int argc;
char *argv[];
{
int i;
if ( argc<2 ) {
printf("Usage : %s file ...\n", argv[0]);
exit(1);
}
for( i=1; i<argc; i++) {
(void)check(argv[i]);
}
}
int check(filename)
char *filename;
{
FILE *fid;
uchar buff[BUFF_SIZE];
int kind, n;
char *f, work[256];
struct stat stat_buff;
if ( stat(filename, &stat_buff)==-1 ) {
perror(filename);
return(1);
}
f = "";
if ( stat_buff.st_mode & S_IFIFO ) f = "pipe or FIFO";
else if ( stat_buff.st_mode & S_IFCHR ) f = "character special";
else if ( stat_buff.st_mode & S_IFDIR ) f = "directory";
else if ( stat_buff.st_mode & S_IFBLK ) f = "block special";
else if ( stat_buff.st_mode & S_IFREG ) {
if ( (fid = fopen( filename, "r"))==NULL ) {
perror(filename);
return(1);
}
n = fread(buff, sizeof(char), BUFF_SIZE, fid);
fclose(fid);
kind = check_detail(buff, n);
switch(kind) {
case ASCII:
f = "ascii text"; break;
case SJIS:
f = "SJIS text"; break;
case EUC:
f = "EUC text"; break;
case JIS:
strcpy(work, "JIS text");
if ( kanji_in_type==ESC_DALLER_B )
strcat(work, " (KI=ESC-$-B");
else
strcat(work, " (KI=ESC-$-@");
if ( kanji_out_type==ESC_LEFT_PARA_B )
strcat(work, ",KO=ESC-(-B)");
else
strcat(work, ",KO=ESC-(-J)");
f = work;
break;
case EMPTY:
f = "empty"; break;
case UNKOWN:
f = "UNKOWN"; break;
}
}
else if ( stat_buff.st_mode & S_IFLNK ) f = "symbolic link";
else if ( stat_buff.st_mode & S_IFSOCK ) f = "socket";
printf("%s:%s\t%s\n", filename, (strlen(filename)+1)<=7?"\t":"", f);
return(0);
}
int check_detail(buff, size)
uchar buff[];
int size;
{
if ( size==0 ) return(EMPTY);
if ( is_jis_file(buff, size) ) return(JIS);
if ( is_ascii_file(buff, size) ) return(ASCII);
if ( is_euc_file(buff, size) ) return(EUC);
if ( is_sjis_file(buff, size) ) return(SJIS);
return(UNKOWN);
}
int is_jis_file(buff, size)
uchar buff[];
int size;
{
int i;
kanji_in_type = kanji_out_type = 0;
for (i=0; i<size; i++ ) {
if ( (i+2) < size ) {
if ( is_kanji_in_code(buff[i], buff[i+1], buff[i+2]) ) {
i += 2;
continue;
}
if ( is_kanji_out_code(buff[i], buff[i+1], buff[i+2]) ) {
i += 2;
continue;
}
}
if ( is_ascii_char(buff[i]) ) continue;
return(FALSE);
}
if ( kanji_in_type || kanji_out_type )
return(TRUE);
return(FALSE);
}
int is_ascii_file(buff, size)
uchar buff[];
int size;
{
int i;
for(i=0; i<size; i++) {
if ( is_ascii_char(buff[i]) ) continue;
return(FALSE);
}
return(TRUE);
}
int is_kanji_in_code(c1, c2, c3)
uchar c1, c2, c3;
{
if ( c1==0x1b /*ESC*/ && c2==0x24 /*$*/ && c3==0x40 /*@*/ ) {
kanji_in_type = ESC_DALLER_B;
return(TRUE);
}
else if ( c1==0x1b /*ESC*/ && c2==0x24 /*$*/ && c3==0x42 /*B*/ ) {
kanji_in_type = ESC_DALLER_ATMARK;
return(TRUE);
}
return(FALSE);
}
int is_kanji_out_code(c1, c2, c3)
uchar c1, c2, c3;
{
if ( c1==0x1b /*ESC*/ && c2==0x28 /*(*/ && c3==0x42 /*B*/ ) {
kanji_out_type = ESC_LEFT_PARA_B;
return(TRUE);
}
else if ( c1==0x1b /*ESC*/ && c2==0x28 /*(*/ && c3==0x4A /*J*/ ) {
kanji_out_type = ESC_LEFT_PARA_J;
return(TRUE);
}
return(FALSE);
}
int is_ascii_char(c)
uchar c;
{
return( c>=0x07 && c<=0x0d || c==0x1a || c==0x1b || c>=0x20 && c<=0x7f
? TRUE : FALSE);
}
int is_sjis_file( buff, size)
uchar buff[];
int size;
{
int i;
if ( size<=0 ) return(FALSE);
for ( i=0; i<size; i++) {
if ( is_ascii_char(buff[i]) ) continue;
if ( is_katakana_char(buff[i]) ) continue;
if ( is_sjis_char(buff[i],buff[i+1]) ) {
i++;
continue;
}
return(FALSE);
}
return(TRUE);
}
int is_katakana_char(c)
uchar c;
{
if ( c>=0x0a1 && c<=0xdf ) return(TRUE);
return(FALSE);
}
int is_sjis_char(c1, c2)
uchar c1,c2;
{
if ( (c1>=0x081 && c1<=0x09f) || (c1>=0xe0 && c1<=0x0ee) ) {
if ( c2>=0x40 && c2<=0x0fc ) return(TRUE);
}
return(FALSE);
}
int is_euc_file( buff, size)
uchar buff[];
int size;
{
int i;
if ( size<=0 ) return(FALSE);
for ( i=0; i<size; i++) {
if ( is_ascii_char(buff[i]) ) continue;
if ( is_euc_katakana_char(buff[i], buff[i+1]) ) {
i++;
continue;
}
if ( is_euc_char(buff[i],buff[i+1]) ) {
i++;
continue;
}
return(FALSE);
}
return(TRUE);
}
int is_euc_char(c1, c2)
uchar c1,c2;
{
if ( c1>=0x0a1 && c1<=0x0fe ) {
if ( c2>=0x0a1 && c2<=0x0fe ) return(TRUE);
}
return(FALSE);
}
int is_euc_katakana_char(c1, c2)
uchar c1,c2;
{
if ( c1==0x08e ) {
if ( is_katakana_char(c2) ) return(TRUE);
}
return(FALSE);
}
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