CONFIG_INCREMENTAL doesn't belong to the free version

[libucw.git] / lib / fastbuf.c

diff --git a/lib/fastbuf.c b/lib/fastbuf.c
index d2e08f8648def7918c8fc04404f530aa18fabd0b..f83b40210132db4a87258d9d77f9078f0465b6bd 100644 (file)
--- a/lib/fastbuf.c
+++ b/lib/fastbuf.c
@@ -1,7 +1,7 @@
 /*
- *     Sherlock Library -- Fast Buffered I/O
+ *     UCW Library -- Fast Buffered I/O
  *
- *     (c) 1997--2004 Martin Mares <mj@ucw.cz>
+ *     (c) 1997--2005 Martin Mares <mj@ucw.cz>
  *
  *     This software may be freely distributed and used according to the terms
  *     of the GNU Lesser General Public License.
@@ -343,15 +343,30 @@ brewind(struct fastbuf *f)
   bsetpos(f, 0);
 }
 
-void
-bskip(struct fastbuf *f, uns len)
+int
+bskip_slow(struct fastbuf *f, uns len)
 {
   while (len)
     {
       byte *buf;
       uns l = bdirect_read_prepare(f, &buf);
+      if (!l)
+       return 0;
       l = MIN(l, len);
       bdirect_read_commit(f, buf+l);
       len -= l;
     }
+  return 1;
+}
+
+sh_off_t
+bfilesize(struct fastbuf *f)
+{
+  if (!f)
+    return 0;
+  sh_off_t pos = btell(f);
+  bseek(f, 0, SEEK_END);
+  sh_off_t len = btell(f);
+  bsetpos(f, pos);
+  return len;
 }