Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <bio.h>
#include "String.h"

/* Append an input line to a String.
 *
 * Returns a pointer to the character string (or 0).
 * Trailing newline is left on.
 */ 
extern char *
s_read_line(Biobuf *fp, String *to)
{
        char *cp;
        int llen;

        if(to->ref > 1)
                sysfatal("can't s_read_line a shared string");
        s_terminate(to);
        cp = Brdline(fp, '\n');
        if(cp == 0)
                return 0;
        llen = Blinelen(fp);
        if(to->end - to->ptr < llen)
                s_grow(to, llen);
        memmove(to->ptr, cp, llen);
        cp = to->ptr;
        to->ptr += llen;
        s_terminate(to);
        return cp;
}