getln2.c
changeset 0 c045670f36e9
equal deleted inserted replaced
-1:000000000000 0:c045670f36e9
       
     1 #include "substdio.h"
       
     2 #include "stralloc.h"
       
     3 #include "byte.h"
       
     4 #include "getln.h"
       
     5 
       
     6 int getln2(ss,sa,cont,clen,sep)
       
     7 register substdio *ss;
       
     8 register stralloc *sa;
       
     9 /*@out@*/char **cont;
       
    10 /*@out@*/unsigned int *clen;
       
    11 int sep;
       
    12 {
       
    13   register char *x;
       
    14   register unsigned int i;
       
    15   int n;
       
    16  
       
    17   if (!stralloc_ready(sa,0)) return -1;
       
    18   sa->len = 0;
       
    19  
       
    20   for (;;) {
       
    21     n = substdio_feed(ss);
       
    22     if (n < 0) return -1;
       
    23     if (n == 0) { *clen = 0; return 0; }
       
    24     x = substdio_PEEK(ss);
       
    25     i = byte_chr(x,n,sep);
       
    26     if (i < n) { substdio_SEEK(ss,*clen = i + 1); *cont = x; return 0; }
       
    27     if (!stralloc_readyplus(sa,n)) return -1;
       
    28     i = sa->len;
       
    29     sa->len = i + substdio_get(ss,sa->s + i,n);
       
    30   }
       
    31 }