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/*
* wc.c
* Implementation of SUSv3 XCU wc utility
* Copyright © 2007 Rich Felker
* Licensed under the terms of the GNU General Public License, v2 or later
*/
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
#include <wctype.h>
#include <locale.h>
static int my_mbrtowc(wchar_t *wc, int b, mbstate_t *st)
{
char c = b;
int retry = 1;
retry:
switch ((int)mbrtowc(wc, &c, 1, st)) {
case -2:
return -2;
case -1:
memset(st, 0, sizeof(mbstate_t));
if (retry--) goto retry;
return retry; /* yes this is lame */
}
return 1;
}
int main(int argc, char *argv[])
{
int b;
int pc=0, pm=0, pw=0, pl=0;
unsigned long long c, m, w, l;
unsigned long long tc=0, tm=0, tw=0, tl=0;
int sp;
mbstate_t st;
wchar_t wc;
char *file;
FILE *f;
int err = 0;
int totals = 0, noname = 0;
setlocale(LC_CTYPE, "");
while ((b = getopt(argc, argv, "cmwl")) != EOF) switch(b) {
case 'c': pc=1; break;
case 'm': pm=1; break;
case 'w': pw=1; break;
case 'l': pl=1; break;
default: exit(1);
}
if (!(pc|pm|pw|pl)) pc=pw=pl=1;
if (pc&pm) {
fprintf(stderr, "%s: -c and -m are not valid together\n",
argv[0]);
exit(1);
}
if (optind == argc) {
file = "(stdin)";
f = stdin;
noname = 1;
goto use_stdin;
} else if (argc-optind > 1) totals=1;
for (; optind < argc; optind++) {
file = argv[optind];
f = fopen(file, "rb");
if (!f) {
fprintf(stderr, "%s: %s: ", argv[0], file);
perror("");
err = 1;
continue;
}
use_stdin:
memset(&st, 0, sizeof st);
for (sp=1, c=m=w=l=0; (b=getc(f)) >= 0; c++) {
if ((pm|pw) && my_mbrtowc(&wc, b, &st) >= 0) {
m++;
if (iswspace(wc)) sp=1;
else if (sp) sp=0, w++;
}
if (b == '\n') l++;
}
if (ferror(f)) {
fprintf(stderr, "%s: %s: ", argv[0], file);
perror("");
err = 1;
}
tl += l; tw += w; tm += m; tc += c;
totals:
if (pl) printf("%7llu", l);
if (pl&pw) putchar(' ');
if (pw) printf("%7llu", w);
if ((pl|pw)&(pc|pm)) putchar(' ');
if (pc|pm) printf("%7llu", pm?m:c);
if (!noname) printf(" %s", file);
putchar('\n');
fclose(f);
}
if (totals) {
l = tl;
w = tw;
m = tm;
c = tc;
file = "total";
f = stdin;
totals = 0;
goto totals;
}
return err;
}
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