55 lines
834 B
C
55 lines
834 B
C
#include "kernel/types.h"
|
|
#include "kernel/stat.h"
|
|
#include "user/user.h"
|
|
|
|
char buf[512];
|
|
|
|
void
|
|
wc(int fd, char *name)
|
|
{
|
|
int i, n;
|
|
int l, w, c, inword;
|
|
|
|
l = w = c = 0;
|
|
inword = 0;
|
|
while((n = read(fd, buf, sizeof(buf))) > 0){
|
|
for(i=0; i<n; i++){
|
|
c++;
|
|
if(buf[i] == '\n')
|
|
l++;
|
|
if(strchr(" \r\t\n\v", buf[i]))
|
|
inword = 0;
|
|
else if(!inword){
|
|
w++;
|
|
inword = 1;
|
|
}
|
|
}
|
|
}
|
|
if(n < 0){
|
|
printf("wc: read error\n");
|
|
exit(1);
|
|
}
|
|
printf("%d %d %d %s\n", l, w, c, name);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int fd, i;
|
|
|
|
if(argc <= 1){
|
|
wc(0, "");
|
|
exit(0);
|
|
}
|
|
|
|
for(i = 1; i < argc; i++){
|
|
if((fd = open(argv[i], 0)) < 0){
|
|
printf("wc: cannot open %s\n", argv[i]);
|
|
exit(1);
|
|
}
|
|
wc(fd, argv[i]);
|
|
close(fd);
|
|
}
|
|
exit(0);
|
|
}
|