fixes #14193

[wxWidgets.git] / src / common / zstream.cpp

diff --git a/src/common/zstream.cpp b/src/common/zstream.cpp
index 7afa0548ffd9a2e2133782e246521b71161d04b2..ce63c07dc9135f28a41426057763ed971b5d1e36 100644 (file)
--- a/src/common/zstream.cpp
+++ b/src/common/zstream.cpp
@@ -1,5 +1,5 @@
 //////////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////

-// Name:        zstream.cpp
+// Name:        src/common/zstream.cpp

 // Purpose:     Compressed stream classes
 // Author:      Guilhem Lavaux
 // Modified by: Mike Wetherell
 // Purpose:     Compressed stream classes
 // Author:      Guilhem Lavaux
 // Modified by: Mike Wetherell


@@ -9,32 +9,33 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "zstream.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-  #pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #if wxUSE_ZLIB && wxUSE_STREAMS
 
 #include "wx/zstream.h"
 #endif
 
 #if wxUSE_ZLIB && wxUSE_STREAMS
 
 #include "wx/zstream.h"

-#include "wx/utils.h"
-#include "wx/intl.h"
-#include "wx/log.h"
+#include "wx/versioninfo.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/utils.h"
+#endif
+

 
 // normally, the compiler options should contain -I../zlib, but it is
 // apparently not the case for all MSW makefiles and so, unless we use
 // configure (which defines __WX_SETUP_H__) or it is explicitly overridden by
 // the user (who can define wxUSE_ZLIB_H_IN_PATH), we hardcode the path here
 
 // normally, the compiler options should contain -I../zlib, but it is
 // apparently not the case for all MSW makefiles and so, unless we use
 // configure (which defines __WX_SETUP_H__) or it is explicitly overridden by
 // the user (who can define wxUSE_ZLIB_H_IN_PATH), we hardcode the path here

-#if defined(__WXMSW__) && !defined(__WX_SETUP_H__) && !defined(wxUSE_ZLIB_H_IN_PATH)
-   #include "../zlib/zlib.h"
+#if defined(__WINDOWS__) && !defined(__WX_SETUP_H__) && !defined(wxUSE_ZLIB_H_IN_PATH)
+    #include "../zlib/zlib.h"

 #else
 #else

-   #include "zlib.h"
+    #include "zlib.h"

 #endif
 
 enum {
 #endif
 
 enum {


@@ -43,25 +44,111 @@ enum {
     ZSTREAM_AUTO        = 0x20      // auto detect between gzip and zlib
 };
 
     ZSTREAM_AUTO        = 0x20      // auto detect between gzip and zlib
 };
 

+
+wxVersionInfo wxGetZlibVersionInfo()
+{
+    int major,
+        minor,
+        build;
+
+    if ( sscanf(zlibVersion(), "%d.%d.%d", &major, &minor, &build) != 3 )
+    {
+        major =
+        minor =
+        build = 0;
+    }
+
+    return wxVersionInfo("zlib", major, minor, build);
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// Zlib Class factory
+
+IMPLEMENT_DYNAMIC_CLASS(wxZlibClassFactory, wxFilterClassFactory)
+
+static wxZlibClassFactory g_wxZlibClassFactory;
+
+wxZlibClassFactory::wxZlibClassFactory()
+{
+    if (this == &g_wxZlibClassFactory)
+        PushFront();
+}
+
+const wxChar * const *
+wxZlibClassFactory::GetProtocols(wxStreamProtocolType type) const
+{
+    static const wxChar *mimes[] = { wxT("application/x-deflate"), NULL };
+    static const wxChar *encs[] =  { wxT("deflate"), NULL };
+    static const wxChar *empty[] = { NULL };
+
+    switch (type) {
+        case wxSTREAM_MIMETYPE:         return mimes;
+        case wxSTREAM_ENCODING:         return encs;
+        default:                        return empty;
+    }
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Gzip Class factory
+
+IMPLEMENT_DYNAMIC_CLASS(wxGzipClassFactory, wxFilterClassFactory)
+
+static wxGzipClassFactory g_wxGzipClassFactory;
+
+wxGzipClassFactory::wxGzipClassFactory()
+{
+    if (this == &g_wxGzipClassFactory && wxZlibInputStream::CanHandleGZip())
+        PushFront();
+}
+
+const wxChar * const *
+wxGzipClassFactory::GetProtocols(wxStreamProtocolType type) const
+{
+    static const wxChar *protos[] =
+        { wxT("gzip"), NULL };
+    static const wxChar *mimes[] =
+        { wxT("application/gzip"), wxT("application/x-gzip"), NULL };
+    static const wxChar *encs[] =
+        { wxT("gzip"), NULL };
+    static const wxChar *exts[] =
+        { wxT(".gz"), wxT(".gzip"), NULL };
+    static const wxChar *empty[] =
+        { NULL };
+
+    switch (type) {
+        case wxSTREAM_PROTOCOL: return protos;
+        case wxSTREAM_MIMETYPE: return mimes;
+        case wxSTREAM_ENCODING: return encs;
+        case wxSTREAM_FILEEXT:  return exts;
+        default:                return empty;
+    }
+}
+
+

 //////////////////////
 // wxZlibInputStream
 //////////////////////
 
 wxZlibInputStream::wxZlibInputStream(wxInputStream& stream, int flags)
   : wxFilterInputStream(stream)
 //////////////////////
 // wxZlibInputStream
 //////////////////////
 
 wxZlibInputStream::wxZlibInputStream(wxInputStream& stream, int flags)
   : wxFilterInputStream(stream)

+{
+    Init(flags);
+}
+
+wxZlibInputStream::wxZlibInputStream(wxInputStream *stream, int flags)
+  : wxFilterInputStream(stream)
+{
+    Init(flags);
+}
+
+void wxZlibInputStream::Init(int flags)

 {
   m_inflate = NULL;
   m_z_buffer = new unsigned char[ZSTREAM_BUFFER_SIZE];
   m_z_size = ZSTREAM_BUFFER_SIZE;
   m_pos = 0;
 
 {
   m_inflate = NULL;
   m_z_buffer = new unsigned char[ZSTREAM_BUFFER_SIZE];
   m_z_size = ZSTREAM_BUFFER_SIZE;
   m_pos = 0;
 

-#if WXWIN_COMPATIBILITY_2_4
-  // treat compatibilty mode as auto
-  m_24compatibilty = flags == wxZLIB_24COMPATIBLE;
-  if (m_24compatibilty)
-    flags = wxZLIB_AUTO;
-#endif
-

   // if gzip is asked for but not supported...
   if ((flags == wxZLIB_GZIP || flags == wxZLIB_AUTO) && !CanHandleGZip()) {
     if (flags == wxZLIB_AUTO) {
   // if gzip is asked for but not supported...
   if ((flags == wxZLIB_GZIP || flags == wxZLIB_AUTO) && !CanHandleGZip()) {
     if (flags == wxZLIB_AUTO) {


@@ -135,14 +222,17 @@ size_t wxZlibInputStream::OnSysRead(void *buffer, size_t size)
         break;
 
     case Z_STREAM_END:
         break;
 
     case Z_STREAM_END:

-      // Unread any data taken from past the end of the deflate stream, so that
-      // any additional data can be read from the underlying stream (the crc
-      // in a gzip for example)
-      if (m_inflate->avail_in) {
-        m_parent_i_stream->Ungetch(m_inflate->next_in, m_inflate->avail_in);
-        m_inflate->avail_in = 0;
+      if (m_inflate->avail_out) {
+        // Unread any data taken from past the end of the deflate stream, so that
+        // any additional data can be read from the underlying stream (the crc
+        // in a gzip for example)
+        if (m_inflate->avail_in) {
+          m_parent_i_stream->Reset();
+          m_parent_i_stream->Ungetch(m_inflate->next_in, m_inflate->avail_in);
+          m_inflate->avail_in = 0;
+        }
+        m_lasterror = wxSTREAM_EOF;

       }
       }

-      m_lasterror = wxSTREAM_EOF;

       break;
 
     case Z_BUF_ERROR:
       break;
 
     case Z_BUF_ERROR:


@@ -151,18 +241,15 @@ size_t wxZlibInputStream::OnSysRead(void *buffer, size_t size)
       // by the parent strean,
       m_lasterror = wxSTREAM_READ_ERROR;
       if (m_parent_i_stream->Eof())
       // by the parent strean,
       m_lasterror = wxSTREAM_READ_ERROR;
       if (m_parent_i_stream->Eof())

-#if WXWIN_COMPATIBILITY_2_4
-        if (m_24compatibilty)
-          m_lasterror = wxSTREAM_EOF;
-        else
-#endif
+      {

           wxLogError(_("Can't read inflate stream: unexpected EOF in underlying stream."));
           wxLogError(_("Can't read inflate stream: unexpected EOF in underlying stream."));

+      }

       break;
 
     default:
       wxString msg(m_inflate->msg, *wxConvCurrent);
       if (!msg)
       break;
 
     default:
       wxString msg(m_inflate->msg, *wxConvCurrent);
       if (!msg)

-        msg.Format(_("zlib error %d"), err);
+        msg = wxString::Format(_("zlib error %d"), err);

       wxLogError(_("Can't read from inflate stream: %s"), msg.c_str());
       m_lasterror = wxSTREAM_READ_ERROR;
   }
       wxLogError(_("Can't read from inflate stream: %s"), msg.c_str());
       m_lasterror = wxSTREAM_READ_ERROR;
   }


@@ -180,6 +267,16 @@ size_t wxZlibInputStream::OnSysRead(void *buffer, size_t size)
   return major > 1 || (major == 1 && minor >= 2);
 }
 
   return major > 1 || (major == 1 && minor >= 2);
 }
 

+bool wxZlibInputStream::SetDictionary(const char *data, const size_t datalen)
+{
+    return (inflateSetDictionary(m_inflate, (Bytef*)data, datalen) == Z_OK);
+}
+
+bool wxZlibInputStream::SetDictionary(const wxMemoryBuffer &buf)
+{
+    return SetDictionary((char*)buf.GetData(), buf.GetDataLen());
+}
+

 
 //////////////////////
 // wxZlibOutputStream
 
 //////////////////////
 // wxZlibOutputStream


@@ -189,6 +286,19 @@ wxZlibOutputStream::wxZlibOutputStream(wxOutputStream& stream,
                                        int level,
                                        int flags)
  : wxFilterOutputStream(stream)
                                        int level,
                                        int flags)
  : wxFilterOutputStream(stream)

+{
+    Init(level, flags);
+}
+
+wxZlibOutputStream::wxZlibOutputStream(wxOutputStream *stream,
+                                       int level,
+                                       int flags)
+ : wxFilterOutputStream(stream)
+{
+    Init(level, flags);
+}
+
+void wxZlibOutputStream::Init(int level, int flags)

 {
   m_deflate = NULL;
   m_z_buffer = new unsigned char[ZSTREAM_BUFFER_SIZE];
 {
   m_deflate = NULL;
   m_z_buffer = new unsigned char[ZSTREAM_BUFFER_SIZE];


@@ -242,12 +352,10 @@ bool wxZlibOutputStream::Close()
  {
   DoFlush(true);
    deflateEnd(m_deflate);
  {
   DoFlush(true);
    deflateEnd(m_deflate);

-   delete m_deflate;
+   wxDELETE(m_deflate);
+   wxDELETEA(m_z_buffer);

 
 

-  m_deflate = NULL;
-   delete[] m_z_buffer;
-  m_z_buffer = NULL;
-  return IsOk();
+  return wxFilterOutputStream::Close() && IsOk();

  }
 
 void wxZlibOutputStream::DoFlush(bool final)
  }
 
 void wxZlibOutputStream::DoFlush(bool final)


@@ -284,7 +392,11 @@ size_t wxZlibOutputStream::OnSysWrite(const void *buffer, size_t size)
   wxASSERT_MSG(m_deflate && m_z_buffer, wxT("Deflate stream not open"));
 
   if (!m_deflate || !m_z_buffer)
   wxASSERT_MSG(m_deflate && m_z_buffer, wxT("Deflate stream not open"));
 
   if (!m_deflate || !m_z_buffer)

+  {
+    // notice that this will make IsOk() test just below return false

     m_lasterror = wxSTREAM_WRITE_ERROR;
     m_lasterror = wxSTREAM_WRITE_ERROR;

+  }
+

   if (!IsOk() || !size)
     return 0;
 
   if (!IsOk() || !size)
     return 0;
 


@@ -312,7 +424,7 @@ size_t wxZlibOutputStream::OnSysWrite(const void *buffer, size_t size)
     m_lasterror = wxSTREAM_WRITE_ERROR;
     wxString msg(m_deflate->msg, *wxConvCurrent);
     if (!msg)
     m_lasterror = wxSTREAM_WRITE_ERROR;
     wxString msg(m_deflate->msg, *wxConvCurrent);
     if (!msg)

-      msg.Format(_("zlib error %d"), err);
+      msg = wxString::Format(_("zlib error %d"), err);

     wxLogError(_("Can't write to deflate stream: %s"), msg.c_str());
   }
 
     wxLogError(_("Can't write to deflate stream: %s"), msg.c_str());
   }
 


@@ -326,6 +438,15 @@ size_t wxZlibOutputStream::OnSysWrite(const void *buffer, size_t size)
   return wxZlibInputStream::CanHandleGZip();
 }
 
   return wxZlibInputStream::CanHandleGZip();
 }
 

+bool wxZlibOutputStream::SetDictionary(const char *data, const size_t datalen)
+{
+    return (deflateSetDictionary(m_deflate, (Bytef*)data, datalen) == Z_OK);
+}
+
+bool wxZlibOutputStream::SetDictionary(const wxMemoryBuffer &buf)
+{
+    return SetDictionary((char*)buf.GetData(), buf.GetDataLen());
+}
+

 #endif
   // wxUSE_ZLIB && wxUSE_STREAMS
 #endif
   // wxUSE_ZLIB && wxUSE_STREAMS

-