Always write end record unless one has already been written.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51008 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/tarstrm.h

@@ -280,6 +280,7 @@ private:
     char *m_extendedHdr;
     size_t m_extendedSize;
     wxString m_badfit;
+    bool m_endrecWritten;
 
     DECLARE_NO_COPY_CLASS(wxTarOutputStream)
 };

include/wx/zipstrm.h

@@ -346,6 +346,7 @@ private:
     int m_level;
     wxFileOffset m_offsetAdjustment;
     wxString m_Comment;
+    bool m_endrecWritten;
 
     DECLARE_NO_COPY_CLASS(wxZipOutputStream)
 };

src/common/tarstrm.cpp

@@ -1083,11 +1083,11 @@ void wxTarOutputStream::Init(wxTarFormat format)
     m_extendedHdr = NULL;
     m_extendedSize = 0;
     m_lasterror = m_parent_o_stream->GetLastError();
+    m_endrecWritten = false;
 }
 
 wxTarOutputStream::~wxTarOutputStream()
 {
-    if (m_tarsize)
     Close();
     delete m_hdr;
     delete m_hdr2;
@@ -1207,7 +1207,7 @@ bool wxTarOutputStream::CloseEntry()
 
 bool wxTarOutputStream::Close()
 {
-    if (!CloseEntry())
+    if (!CloseEntry() || (m_tarsize == 0 && m_endrecWritten))
         return false;
  
     memset(m_hdr, 0, sizeof(*m_hdr));
@@ -1219,6 +1219,7 @@ bool wxTarOutputStream::Close()
     m_tarsize = 0;
     m_tarstart = wxInvalidOffset;
     m_lasterror = m_parent_o_stream->GetLastError();
+    m_endrecWritten = true;
     return IsOk();
 }
 

src/common/zipstrm.cpp

@@ -1463,11 +1463,13 @@ bool wxZipInputStream::LoadEndRecord()
     m_TotalEntries = endrec.GetTotalEntries();
     m_Comment = endrec.GetComment();
 
+    wxUint32 magic = m_TotalEntries ? CENTRAL_MAGIC : END_MAGIC;
+
     // Now find the central-directory. we have the file offset of
     // the CD, so look there first.
     if (m_parent_i_stream->SeekI(endrec.GetOffset()) != wxInvalidOffset &&
-            ReadSignature() == CENTRAL_MAGIC) {
-        m_signature = CENTRAL_MAGIC;
+            ReadSignature() == magic) {
+        m_signature = magic;
         m_position = endrec.GetOffset();
         m_offsetAdjustment = 0;
         return true;
@@ -1477,8 +1479,8 @@ bool wxZipInputStream::LoadEndRecord()
     // to a self extractor, so take the CD size (also in endrec), subtract
     // it from the file offset of the end-central-directory and look there.
     if (m_parent_i_stream->SeekI(endPos - endrec.GetSize())
-            != wxInvalidOffset && ReadSignature() == CENTRAL_MAGIC) {
-        m_signature = CENTRAL_MAGIC;
+            != wxInvalidOffset && ReadSignature() == magic) {
+        m_signature = magic;
         m_position = endPos - endrec.GetSize();
         m_offsetAdjustment = m_position - endrec.GetOffset();
         return true;
@@ -1988,6 +1990,7 @@ void wxZipOutputStream::Init(int level)
     m_comp = NULL;
     m_level = level;
     m_offsetAdjustment = wxInvalidOffset;
+    m_endrecWritten = false;
 }
 
 wxZipOutputStream::~wxZipOutputStream()
@@ -2287,7 +2290,9 @@ bool wxZipOutputStream::Close()
 {
     CloseEntry();
 
-    if (m_lasterror == wxSTREAM_WRITE_ERROR) {
+    if (m_lasterror == wxSTREAM_WRITE_ERROR
+        || (m_entries.size() == 0 && m_endrecWritten))
+    {
         wxFilterOutputStream::Close();
         return false;
     }
@@ -2312,6 +2317,7 @@ bool wxZipOutputStream::Close()
     endrec.Write(*m_parent_o_stream, GetConv());
 
     m_lasterror = m_parent_o_stream->GetLastError();
+    m_endrecWritten = true;
     
     if (!wxFilterOutputStream::Close() || !IsOk())
         return false;