X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d1af991f497a5e95d8f8ab15a4e4a4a4c375928f..236a9de39afa090fdee3cf91cb5364ceca69e3f8:/src/common/zstream.cpp

diff --git a/src/common/zstream.cpp b/src/common/zstream.cpp
index 1ae27ad74c..7ca4e3bac4 100644
--- a/src/common/zstream.cpp
+++ b/src/common/zstream.cpp
@@ -29,9 +29,10 @@
 
 // When using configure, the path must be "zlib.h" I don't know
 // what other ports (wxMac, wxMotif without configure) need here.
-
-#ifdef __WXMSW__
-   #include "..\zlib\zlib.h"
+// If we are building with configure (defines __WX_SETUP_H__), 
+// we trust the zlib path is given as a -I option.
+#if defined(__WXMSW__) && !defined(__WX_SETUP_H__)
+   #include "../zlib/zlib.h"
 #else
    #include "zlib.h"
 #endif
@@ -88,22 +89,26 @@ size_t wxZlibInputStream::OnSysRead(void *buffer, size_t size)
       m_inflate->next_in = m_z_buffer;
       m_inflate->avail_in = m_parent_i_stream->LastRead();
 
-      if (m_parent_i_stream->LastError() != wxStream_NOERROR)
-        return (size - m_inflate->avail_in);
+      if (m_parent_i_stream->LastError() != wxStream_NOERROR &&
+          m_parent_i_stream->LastError() != wxStream_EOF)
+      { 
+        m_lasterror = m_parent_i_stream->LastError();
+        return 0; // failed to read anything
+      }
     }
     err = inflate(m_inflate, Z_FINISH);
     if (err == Z_STREAM_END)
-      return (size - m_inflate->avail_in);
+      return (size - m_inflate->avail_out);
   }
 
-  return size-m_inflate->avail_in;
+  return size-m_inflate->avail_out;
 }
 
 //////////////////////
 // wxZlibOutputStream
 //////////////////////
 
-wxZlibOutputStream::wxZlibOutputStream(wxOutputStream& stream)
+wxZlibOutputStream::wxZlibOutputStream(wxOutputStream& stream, int level)
  : wxFilterOutputStream(stream)
 {
   int err;
@@ -114,7 +119,10 @@ wxZlibOutputStream::wxZlibOutputStream(wxOutputStream& stream)
   m_deflate->zfree = (free_func)0;
   m_deflate->opaque = (voidpf)0;
 
-  err = deflateInit(m_deflate, Z_DEFAULT_COMPRESSION);
+  if (level == -1) level = Z_DEFAULT_COMPRESSION;
+  wxASSERT_MSG(level >= 0 && level <= 9, wxT("wxZlibOutputStream compression level must be between 0 and 9!"));
+
+  err = deflateInit(m_deflate, level);
   if (err != Z_OK) {
     deflateEnd(m_deflate);
     return;
@@ -137,7 +145,7 @@ wxZlibOutputStream::~wxZlibOutputStream()
   err = deflate(m_deflate, Z_FINISH);
   if (err != Z_STREAM_END) 
   {
-    wxLogDebug( _T("wxZlibOutputStream: an error occured while closing the stream.\n") );
+    wxLogDebug( wxT("wxZlibOutputStream: an error occured while closing the stream.\n") );
     return;
   }
 
@@ -159,6 +167,19 @@ void wxZlibOutputStream::Sync()
     return;
   }
 
+  // Fixed by "Stefan Csomor" <csomor@advancedconcepts.ch>
+  while( m_deflate->avail_out == 0 )
+  {
+     m_parent_o_stream->Write(m_z_buffer, m_z_size );
+     m_deflate->next_out  = m_z_buffer;
+     m_deflate->avail_out = m_z_size;
+     err = deflate(m_deflate, Z_FULL_FLUSH);
+     if (err != Z_OK) {
+        return;
+     }
+  }
+  // End
+
   m_parent_o_stream->Write(m_z_buffer, m_z_size-m_deflate->avail_out);
   m_deflate->next_out  = m_z_buffer;
   m_deflate->avail_out = m_z_size;