ts_read_line.c - plan9port - [fork] Plan 9 from user space
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       ---
       ts_read_line.c (578B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <bio.h>
            4 #include "libString.h"
            5 
            6 /* Append an input line to a String.
            7  *
            8  * Returns a pointer to the character string (or 0).
            9  * Trailing newline is left on.
           10  */
           11 extern char *
           12 s_read_line(Biobuf *fp, String *to)
           13 {
           14         char *cp;
           15         int llen;
           16 
           17         if(to->ref > 1)
           18                 sysfatal("can't s_read_line a shared string");
           19         s_terminate(to);
           20         cp = Brdline(fp, '\n');
           21         if(cp == 0)
           22                 return 0;
           23         llen = Blinelen(fp);
           24         if(to->end - to->ptr < llen)
           25                 s_grow(to, llen);
           26         memmove(to->ptr, cp, llen);
           27         cp = to->ptr;
           28         to->ptr += llen;
           29         s_terminate(to);
           30         return cp;
           31 }