void isoFile::Open( const wxString& srcfile )
{
Close();
m_filename = srcfile;
m_parts[0].handle = new wxFileInputStream( m_filename );
pxStream_OpenCheck( *m_parts[0].handle, m_filename, L"reading" );
m_numparts = 1;
m_parts[0].slsn = 0;
// elsn is unknown at this time, but is also unused when m_numparts == 1.
// (and if numparts is incremented, elsn will get assigned accordingly)
if (!Detect())
throw Exception::BadStream()
.SetUserMsg(_("Unrecognized ISO image file format"))
.SetDiagMsg(L"ISO mounting failed: PCSX2 is unable to identify the ISO image type.");
if (!(m_flags & ISOFLAGS_BLOCKDUMP_V2))
{
m_blocks = m_parts[0].CalculateBlocks( 0, m_blocksize );
FindParts();
if (m_numparts > 1)
{
Console.WriteLn( Color_Blue, "isoFile: multi-part ISO detected. %u parts found." );
}
}
const char* isotypename = NULL;
switch(m_type)
{
case ISOTYPE_CD: isotypename = "CD"; break;
case ISOTYPE_DVD: isotypename = "DVD"; break;
case ISOTYPE_AUDIO: isotypename = "Audio CD"; break;
case ISOTYPE_DVDDL:
isotypename = "DVD9 (dual-layer)";
break;
case ISOTYPE_ILLEGAL:
default:
isotypename = "illegal media";
break;
}
Console.WriteLn(Color_StrongBlue, L"isoFile open ok: %s", m_filename.c_str());
ConsoleIndentScope indent;
Console.WriteLn("Image type = %s", isotypename);
Console.WriteLn("Fileparts = %u", m_numparts);
DevCon.WriteLn ("blocks = %u", m_blocks);
DevCon.WriteLn ("offset = %d", m_offset);
DevCon.WriteLn ("blocksize = %u", m_blocksize);
DevCon.WriteLn ("blockoffset = %d", m_blockofs);
}
// multi-part ISO support is provided for FAT32 compatibility; so that large 4GB+ isos
// can be split into multiple smaller files.
//
// Returns TRUE if multiple parts for the ISO are found. Returns FALSE if only one
// part is found.
void isoFile::FindParts()
{
wxFileName nameparts( m_filename );
wxString curext( nameparts.GetExt() );
wxChar prefixch = wxTolower(curext[0]);
// Multi-part rules!
// * The first part can either be the proper extension (ISO, MDF, etc) or the numerical
// extension (I00, I01, M00, M01, etc).
// * Numerical extensions MUST begin at 00 (I00 etc), regardless of if the first part
// is proper or numerical.
uint i = 0;
if ((curext.Length() == 3) && (curext[1] == L'0') && (curext[2] == L'0'))
{
// First file is an OO, so skip 0 in the loop below:
i = 1;
}
FastFormatUnicode extbuf;
extbuf.Write( L"%c%02u", prefixch, i );
nameparts.SetExt( extbuf );
if (!pxFileExists_WithExt(nameparts, extbuf)) return;
DevCon.WriteLn( Color_Blue, "isoFile: multi-part %s detected...", curext.Upper().c_str() );
ConsoleIndentScope indent;
for (; i < MaxSplits; ++i)
{
extbuf.Clear();
extbuf.Write( L"%c%02u", prefixch, i );
if (!pxFileExists_WithExt(nameparts, extbuf)) break;
_IsoPart& thispart( m_parts[m_numparts] );
thispart.handle = new wxFileInputStream( nameparts.GetFullPath() );
pxStream_OpenCheck( *thispart.handle, nameparts.GetFullPath(), L"reading" );
m_blocks += thispart.CalculateBlocks( m_blocks, m_blocksize );
DevCon.WriteLn( Color_Blue, L"\tblocks %u - %u in: %s",
thispart.slsn, thispart.elsn,
nameparts.GetFullPath().c_str()
);
++m_numparts;
}
//Console.WriteLn( Color_Blue, "isoFile: multi-part ISO loaded (%u parts found)", m_numparts );
}
void isoFile::Create(const wxString& filename, int flags)
{
Close();
m_filename = filename;
m_flags = flags;
m_offset = 0;
m_blockofs = 24;
m_blocksize = 2048;
m_outstream = new wxFileOutputStream( m_filename );
pxStream_OpenCheck( *m_outstream, m_filename, L"writing" );
Console.WriteLn("isoFile create ok: %s ", m_filename.c_str());
}
void OutputIsoFile::Create(const wxString& filename, int version)
{
Close();
m_filename = filename;
m_version = version;
m_offset = 0;
m_blockofs = 24;
m_blocksize = 2048;
m_outstream = std::make_unique<wxFileOutputStream>(m_filename);
pxStream_OpenCheck( *m_outstream, m_filename, L"writing" );
Console.WriteLn("isoFile create ok: %s ", WX_STR(m_filename));
}
// Tests the specified filename to see if it is a supported ISO type. This function typically
// executes faster than isoFile::Open since it does not do the following:
// * check for multi-part ISOs. I tests for header info in the main/root ISO only.
// * load blockdump indexes.
//
// Note that this is a member method, and that it will clobber any existing ISO state.
// (assertions are generated in debug mode if the object state is not already closed).
bool isoFile::Test( const wxString& srcfile )
{
pxAssertMsg( !m_parts[0].handle, "Warning! isoFile::Test is about to clobber whatever existing iso bound to this isoFile object!" );
Close();
m_filename = srcfile;
m_parts[0].handle = new wxFileInputStream( m_filename );
pxStream_OpenCheck( *m_parts[0].handle, m_filename, L"reading" );
m_numparts = 1;
m_parts[0].slsn = 0;
// elsn is unknown at this time, but is also unused when m_numparts == 1.
// (and if numparts is incremented, elsn will get assigned accordingly)
return Detect( false );
}
