5279a24d25
added sizer.h/cpp which don't even compile yet git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3315 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
126 lines
3.0 KiB
C++
126 lines
3.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: zipstream.cpp
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// Purpose: input stream for ZIP archive access
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// Author: Vaclav Slavik
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// Copyright: (c) 1999 Vaclav Slavik
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// Licence: wxWindows Licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "zipstrm.h"
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#endif
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
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#include "wx/log.h"
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#include "wx/intl.h"
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#include "wx/stream.h"
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#include "wx/wfstream.h"
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#include "wx/zipstrm.h"
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/* Not the right solution (paths in makefiles) but... */
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#ifdef __BORLANDC__
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#include "../common/unzip.h"
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#else
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#include "unzip.h"
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#endif
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wxZipInputStream::wxZipInputStream(const wxString& archive, const wxString& file) : wxInputStream()
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{
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unz_file_info zinfo;
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m_Pos = 0;
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m_Size = 0;
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m_Archive = (void*) unzOpen(archive.mb_str(wxConvFile));
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if (m_Archive == NULL)
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{
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m_lasterror = wxStream_READ_ERR;
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return;
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}
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if (unzLocateFile((unzFile)m_Archive, file.mb_str(wxConvFile), 0) != UNZ_OK)
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{
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m_lasterror = wxStream_READ_ERR;
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return;
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}
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unzGetCurrentFileInfo((unzFile)m_Archive, &zinfo, (char*) NULL, 0, (void*) NULL, 0, (char*) NULL, 0);
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if (unzOpenCurrentFile((unzFile)m_Archive) != UNZ_OK)
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{
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m_lasterror = wxStream_READ_ERR;
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return;
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}
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m_Size = zinfo.uncompressed_size;
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}
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wxZipInputStream::~wxZipInputStream()
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{
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if (m_Archive)
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{
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if (m_Size != 0)
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unzCloseCurrentFile((unzFile)m_Archive);
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unzClose((unzFile)m_Archive);
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}
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}
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size_t wxZipInputStream::OnSysRead(void *buffer, size_t bufsize)
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{
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if (m_Pos + bufsize > m_Size) bufsize = m_Size - m_Pos;
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unzReadCurrentFile((unzFile)m_Archive, buffer, bufsize);
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m_Pos += bufsize;
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return bufsize;
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}
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off_t wxZipInputStream::OnSysSeek(off_t seek, wxSeekMode mode)
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{
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off_t nextpos;
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void *buf;
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switch (mode)
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{
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case wxFromCurrent : nextpos = seek + m_Pos; break;
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case wxFromStart : nextpos = seek; break;
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case wxFromEnd : nextpos = m_Size - 1 + seek; break;
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default : nextpos = m_Pos; break; /* just to fool compiler, never happens */
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}
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// cheated seeking :
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if (nextpos > m_Pos)
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{
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buf = malloc(nextpos - m_Pos);
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unzReadCurrentFile((unzFile)m_Archive, buf, nextpos - m_Pos);
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free(buf);
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}
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else if (nextpos < m_Pos) {
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unzCloseCurrentFile((unzFile)m_Archive);
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if (unzOpenCurrentFile((unzFile)m_Archive) != UNZ_OK)
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{
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m_lasterror = wxStream_READ_ERR;
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return m_Pos;
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}
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buf = malloc(nextpos);
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unzReadCurrentFile((unzFile)m_Archive, buf, nextpos);
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free(buf);
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}
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m_Pos = nextpos;
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return m_Pos;
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}
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#endif
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// wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
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