From: Guilhem Lavaux <lavaux@easynet.fr>
Date: Fri, 13 Aug 1999 17:49:02 +0000 (+0000)
Subject: Bug fix in wxBufferedInputStream::SeekI
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/d4feedcff19fcb93e35242375be3e1e478f44eac

Bug fix in wxBufferedInputStream::SeekI


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3371 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/src/common/stream.cpp b/src/common/stream.cpp
index c755d78c9d..774f0b129b 100644
--- a/src/common/stream.cpp
+++ b/src/common/stream.cpp
@@ -371,7 +371,13 @@ off_t wxStreamBuffer::Seek(off_t pos, wxSeekMode mode)
     diff = pos + GetIntPosition();
 
     if ( (diff > last_access) || (diff < 0) ) {
-      ret_off = m_stream->OnSysSeek(pos, wxFromCurrent);
+      // We must take into account the fact that we have read something
+      // previously.
+      if (diff < 0)
+        ret_off = m_stream->OnSysSeek(-(last_access-diff), wxFromCurrent);
+           // lastaccess + abs(diff) = lastaccess - diff here
+      else
+        ret_off = m_stream->OnSysSeek(diff-last_access, wxFromCurrent);
       ResetBuffer();
       return ret_off;
     } else {