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1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // EZLib: ZSTREAM.H |
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15 // Declaration for CEZStream class. |
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16 // |
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17 // |
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18 |
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19 #ifndef __EZLIB_EZZSTREAM_H__ |
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20 #define __EZLIB_EZZSTREAM_H__ |
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21 |
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22 #include <e32base.h> |
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23 #include "OldEZlib.h" |
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24 #include "OldEZlibErrorCodes.h" |
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25 |
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26 /** |
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27 Represents a zip stream |
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28 |
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29 @publishedAll |
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30 @released |
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31 */ |
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32 namespace TOLDEZLIB |
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33 { |
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34 class CEZZStream : public CBase |
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35 { |
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36 public: |
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37 /** stream panic values */ |
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38 enum |
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39 { |
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40 EStreamError = -Z_STREAM_ERROR, |
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41 EDataError = -Z_DATA_ERROR, |
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42 EBufError = -Z_BUF_ERROR, |
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43 EVersionError = -Z_VERSION_ERROR, |
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44 EUnexpected |
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45 }; |
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46 public: |
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47 IMPORT_C void SetInput(const TDesC8& aInputData); |
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48 IMPORT_C void SetOutput(TDes8& aOutputData); |
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49 |
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50 IMPORT_C TPtrC8 OutputDescriptor() const; |
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51 IMPORT_C TInt TotalOut() const; |
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52 IMPORT_C TInt TotalIn() const; |
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53 IMPORT_C TInt32 Adler32() const; |
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54 IMPORT_C TInt AvailIn() const; |
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55 IMPORT_C TInt AvailOut() const; |
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56 |
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57 IMPORT_C TInt Progress(TInt aTotalLength) const; |
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58 |
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59 protected: |
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60 CEZZStream(); |
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61 |
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62 |
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63 protected: |
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64 z_stream iStream; |
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65 |
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66 // This pointer is reset every time SetOutput is called. It maintains a pointer to the |
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67 // start of the output buffer which is being written to. We cannot use iStream.next_out, |
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68 // because zlib will modifify this during its deflate and inflate. |
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69 |
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70 TUint8* iOutputPointer; |
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71 TInt iOutputBufferLength; |
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72 }; |
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73 }// namespace TOLDEZLIB |
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74 #endif |