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/* wc.c - Word count
*
* Copyright 2011 Rob Landley <rob@landley.net>
*
* See http://opengroup.org/onlinepubs/9699919799/utilities/wc.html
USE_WC(NEWTOY(wc, USE_TOYBOX_I18N("m")"cwl", TOYFLAG_USR|TOYFLAG_BIN))
config WC
bool "wc"
default y
help
usage: wc -lwcm [FILE...]
Count lines, words, and characters in input.
-l show lines
-w show words
-c show bytes
-m show characters
By default outputs lines, words, bytes, and filename for each
argument (or from stdin if none). Displays only either bytes
or characters.
*/
#define FOR_wc
#include "toys.h"
GLOBALS(
unsigned long totals[3];
)
static void show_lengths(unsigned long *lengths, char *name)
{
int i, nospace = 1;
for (i=0; i<3; i++) {
if (!toys.optflags || (toys.optflags&(1<<i))) {
xprintf(" %ld"+nospace, lengths[i]);
nospace = 0;
}
TT.totals[i] += lengths[i];
}
if (*toys.optargs) xprintf(" %s", name);
xputc('\n');
}
static void do_wc(int fd, char *name)
{
int i, len, clen=1, space;
unsigned long word=0, lengths[]={0,0,0};
for (;;) {
i = 0;
again:
len = i+read(fd, toybuf+i, sizeof(toybuf)-i);
if (len < i) {
perror_msg("%s",name);
toys.exitval = 1;
}
if (!len) break;
for (i=0; i<len; i+=clen) {
if (CFG_TOYBOX_I18N && (toys.optflags&FLAG_m)) {
wchar_t wchar = 0;
clen = mbrtowc(&wchar, toybuf+i, len-i, 0);
if (clen < 1) {
// If the problem might be buffer wrap, move and read more data
if (i) {
memmove(toybuf, toybuf+i, sizeof(toybuf)-i);
i = len - i;
goto again;
} else {
clen=1;
continue;
}
}
space = iswspace(wchar);
} else space = isspace(toybuf[i]);
if (toybuf[i]==10) lengths[0]++;
if (space) word=0;
else {
if (!word) lengths[1]++;
word=1;
}
lengths[2]++;
}
}
show_lengths(lengths, name);
}
void wc_main(void)
{
toys.optflags |= (toys.optflags&8)>>1;
loopfiles(toys.optargs, do_wc);
if (toys.optc>1) show_lengths(TT.totals, "total");
}
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