Mercurial > vba-linux

     1 // This file is (modified) from

     2 // FCEUX (2009)

     3 // FCE Ultra - NES/Famicom Emulator

     4 // Copyright (C) 2003 Xodnizel

     5 // 

     6 // This program is free software; you can redistribute it and/or modify

     7 // it under the terms of the GNU General Public License as published by

     8 // the Free Software Foundation; either version 2 of the License, or

     9 // (at your option) any later version.

    10 // 

    11 // This program is distributed in the hope that it will be useful,

    12 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    14 // GNU General Public License for more details.

    15 // 

    16 // You should have received a copy of the GNU General Public License

    17 // along with this program; if not, write to the Free Software

    18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    19 

    20 #ifndef _7ZIPSTREAMS_HEADER

    21 #define _7ZIPSTREAMS_HEADER

    22 

    23 #include "7z/CPP/Common/MyCom.h"

    24 

    25 class ICountedSequentialOutStream : public ISequentialOutStream

    26 {

    27 public:

    28 	virtual UINT32 Size() const = 0;

    29 };

    30 

    31 class SeqMemoryOutStream : public ICountedSequentialOutStream, private CMyUnknownImp

    32 {

    33 	UINT8* const output;

    34 	UINT32 pos;

    35 	const UINT32 size;

    36 	ULONG refCount;

    37 

    38 	HRESULT STDMETHODCALLTYPE QueryInterface(REFGUID, void**)

    39 	{

    40 		return E_NOINTERFACE;

    41 	}

    42 

    43 	HRESULT STDMETHODCALLTYPE Write(const void* data, UInt32 length, UInt32* bytesWritten)

    44 	{

    45 		if (data != NULL || size == 0)

    46 		{

    47 			//assert(length <= size - pos);

    48 

    49 			if (length > size - pos)

    50 				length = size - pos;

    51 

    52 			if(data)

    53 				memcpy(output + pos, data, length);

    54 			pos += length;

    55 

    56 			if (bytesWritten)

    57 				*bytesWritten = length;

    58 

    59 			return S_OK;

    60 		}

    61 		else

    62 		{

    63 			return E_INVALIDARG;

    64 		}

    65 	}

    66 

    67 	MY_ADDREF_RELEASE

    68 

    69 public:

    70 

    71 	SeqMemoryOutStream(void* d, UINT32 s) : output((UINT8*)d), pos(0), size(s), refCount(0) {}

    72 

    73 	virtual ~SeqMemoryOutStream()

    74 	{

    75 		int a = 0;

    76 	}

    77 

    78 	UINT32 Size() const

    79 	{

    80 		return pos;

    81 	}

    82 };

    83 

    84 class SeqFileOutStream : public ICountedSequentialOutStream, private CMyUnknownImp

    85 {

    86 	FILE* file;

    87 	UINT32 pos;

    88 	ULONG refCount;

    89 

    90 	HRESULT STDMETHODCALLTYPE QueryInterface(REFGUID, void**)

    91 	{

    92 		return E_NOINTERFACE;

    93 	}

    94 

    95 	HRESULT STDMETHODCALLTYPE Write(const void* data, UInt32 length, UInt32* bytesWritten)

    96 	{

    97 		if(!file)

    98 			return E_FAIL;

    99 

   100 		if (data != NULL)

   101 		{

   102 			int written = 0;

   103 			if(data)

   104 				written = fwrite(data, 1, length, file);

   105 

   106 			pos += written;

   107 			if (bytesWritten)

   108 				*bytesWritten = written;

   109 

   110 			return S_OK;

   111 		}

   112 		else

   113 		{

   114 			return E_INVALIDARG;

   115 		}

   116 	}

   117 

   118 	MY_ADDREF_RELEASE

   119 

   120 public:

   121 

   122 	SeqFileOutStream(const char* outFilename) : pos(0), refCount(0)

   123 	{

   124 		file = fopen(outFilename, "wb");

   125 	}

   126 	virtual ~SeqFileOutStream()

   127 	{

   128 		if(file)

   129 			fclose(file);

   130 	}

   131 

   132 	UINT32 Size() const

   133 	{

   134 		return pos;

   135 	}

   136 };

   137 

   138 

   139 class OutStream : public IArchiveExtractCallback, private CMyUnknownImp

   140 {

   141 	ICountedSequentialOutStream* seqStream;

   142 	const UINT32 index;

   143 	ULONG refCount;

   144 

   145 	HRESULT STDMETHODCALLTYPE QueryInterface(REFGUID, void**)

   146 	{

   147 		return E_NOINTERFACE;

   148 	}

   149 

   150 	HRESULT STDMETHODCALLTYPE PrepareOperation(Int32)

   151 	{

   152 		return S_OK;

   153 	}

   154 

   155 	HRESULT STDMETHODCALLTYPE SetTotal(UInt64)

   156 	{

   157 		return S_OK;

   158 	}

   159 

   160 	HRESULT STDMETHODCALLTYPE SetCompleted(const UInt64*)

   161 	{

   162 		return S_OK;

   163 	}

   164 

   165 	HRESULT STDMETHODCALLTYPE SetOperationResult(Int32)

   166 	{

   167 		return S_OK;

   168 	}

   169 

   170 	HRESULT STDMETHODCALLTYPE GetStream(UInt32 id, ISequentialOutStream** ptr, Int32 mode)

   171 	{

   172 		switch (mode)

   173 		{

   174 			case NArchive::NExtract::NAskMode::kExtract:

   175 			case NArchive::NExtract::NAskMode::kTest:

   176 

   177 				if (id != index || ptr == NULL)

   178 					return S_FALSE;

   179 				else

   180 					*ptr = seqStream;

   181 			// fall through

   182 			case NArchive::NExtract::NAskMode::kSkip:

   183 				return S_OK;

   184 

   185 			default:

   186 				return E_INVALIDARG;

   187 		}

   188 	}

   189 

   190 	MY_ADDREF_RELEASE

   191 

   192 public:

   193 

   194 	OutStream(UINT32 index, void* data, UINT32 size) : index(index), refCount(0)

   195 	{

   196 		seqStream = new SeqMemoryOutStream(data, size);

   197 		seqStream->AddRef();

   198 	}

   199 	OutStream(UINT32 index, const char* outFilename) : index(index), refCount(0)

   200 	{

   201 		seqStream = new SeqFileOutStream(outFilename);

   202 		seqStream->AddRef();

   203 	}

   204 	virtual ~OutStream()

   205 	{

   206 		//seqStream->Release(); // commented out because apparently IInArchive::Extract() calls Release one more time than it calls AddRef

   207 	}

   208 	UINT32 Size() const

   209 	{

   210 		return seqStream->Size();

   211 	}

   212 };

   213 

   214 class InStream : public IInStream, private IStreamGetSize, private CMyUnknownImp

   215 {

   216 	ULONG refCount;

   217 

   218 	HRESULT STDMETHODCALLTYPE QueryInterface(REFGUID, void**)

   219 	{

   220 		return E_NOINTERFACE;

   221 	}

   222 

   223 	HRESULT STDMETHODCALLTYPE GetSize(UInt64* outSize)

   224 	{

   225 		if (outSize)

   226 		{

   227 			*outSize = size;

   228 			return S_OK;

   229 		}

   230 		else

   231 		{

   232 			return E_INVALIDARG;

   233 		}

   234 	}

   235 

   236 	MY_ADDREF_RELEASE

   237 

   238 protected:

   239 

   240 	UINT32 size;

   241 

   242 public:

   243 

   244 	explicit InStream() : refCount(0) {}

   245 	virtual ~InStream() {}

   246 };

   247 

   248 

   249 class InFileStream : public InStream

   250 {

   251 public:

   252 

   253 	virtual ~InFileStream()

   254 	{

   255 		if(file)

   256 			fclose(file);

   257 	}

   258 

   259 	FILE* file;

   260 

   261 	InFileStream(const char* fname) : file(NULL)

   262 	{

   263 		file = fopen(fname, "rb");

   264 		if(file)

   265 		{

   266 			fseek(file, 0, SEEK_END);

   267 			size = ftell(file);

   268 			fseek(file, 0, SEEK_SET);

   269 		}

   270 	}

   271 

   272 	HRESULT STDMETHODCALLTYPE Read(void* data, UInt32 length, UInt32* bytesRead)

   273 	{

   274 		if(!file)

   275 			return E_FAIL;

   276 

   277 		if (data != NULL || length == 0)

   278 		{

   279 			int read = fread(data, 1, length, file);

   280 			

   281 			if (bytesRead)

   282 				*bytesRead = read;

   283 

   284 			return S_OK;

   285 		}

   286 		else

   287 		{

   288 			return E_INVALIDARG;

   289 		}

   290 	}

   291 

   292 	HRESULT STDMETHODCALLTYPE Seek(Int64 offset, UInt32 origin, UInt64* pos)

   293 	{

   294 		if(!file)

   295 			return E_FAIL;

   296 

   297 		if (origin < 3)

   298 		{

   299 			fseek(file, (long)offset, origin);

   300 			origin = ftell(file);

   301 

   302 			if (pos)

   303 				*pos = origin;

   304 

   305 			return S_OK;

   306 		}

   307 		else

   308 		{

   309 			return E_INVALIDARG;

   310 		}

   311 	

   312 	}

   313 };

   314 

   315 #endif
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:48:33 -0600
parents	f9f4f1b99eed
children