Equivalently (tried but not much, cleaner).
#include <u.h>
#include <libc.h>
void
main(int argc, char *argv[])
{
int nflag, argi;
int i, len;
char *buf, *p;
nflag = 0;
argi = 0;
for(i = 1; i < argc; i++){
if(argv[i][0] != '-' )
break;
if (strcmp(argv[i], "--") == 0){
argi++;
break;
}
if(strcmp(argv[i], "-n") == 0){
argi++;
nflag++;
}
}
len = 1;
for(i = 1+argi; i < argc; i++)
len += strlen(argv[i])+1;
buf = malloc(len);
if(buf == 0)
exits("no memory");
p = buf;
for(i = 1+argi; i < argc; i++){
strcpy(p, argv[i]);
p += strlen(p);
if(i < argc-1)
*p++ = ' ';
}
if(!nflag)
*p++ = '\n';
if(write(1, buf, p-buf) < 0)
fprint(2, "echo: write error: %r\n");
exits((char *)0);
}
--
- curiosity sKilled the cat
