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1 // Copyright (c) 1998-2009 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 the License "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 // f32\sfat\inc\fat_dir_entry.h |
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15 // FAT directory entry related stuff definitions. |
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16 // |
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17 // |
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18 |
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19 /** |
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20 @file |
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21 @internalTechnology |
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22 */ |
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23 |
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24 #if !defined(FAT_DIR_ENTRY_H) |
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25 #define FAT_DIR_ENTRY_H |
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26 |
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27 |
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28 //------------------------------------------------------------------------------------------------------------------- |
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29 |
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30 |
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31 const TInt KFatDirNameSize = 11; ///< Dos directory/File name length |
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32 const TInt KVFatEntryAttribute = 0x0F; ///< VFat entry attribute setting |
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33 const TUint8 KDotEntryByte = 0x2e; ///< Dot value for self and parent pointer directory entries |
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34 const TUint8 KBlankSpace = 0x20; ///< Blank space in a directory entry |
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35 const TInt KSizeOfFatDirEntryLog2 = 5; ///< Log2 of size in bytes of a Fat directry entry |
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36 const TUint KSizeOfFatDirEntry = 1 << KSizeOfFatDirEntryLog2; ///< Size in bytes of a Fat directry entry |
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37 |
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38 const TUint16 KReservedIdOldEntry = 1; ///< Rugged FAT "OldEntry" id |
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39 const TUint16 KReservedIdNewEntry = 0; ///< Rugged FAT "ReservedIdNewEntry" id |
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40 |
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41 |
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42 typedef TBuf8<KFatDirNameSize> TShortName; ///< Buffer type fot short names in dos entries |
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43 |
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44 //------------------------------------------------------------------------------------------------------------------- |
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45 |
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46 /** |
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47 Fat DOS directory entry structure |
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48 */ |
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49 struct SFatDirEntry |
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50 { |
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51 TUint8 iName[KFatDirNameSize]; ///< :0 File/Directory name |
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52 TUint8 iAttributes; ///< :11 File/Directory attributes |
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53 TUint8 iReserved1[2]; ///< :12 2 reserved bytes(in our implementation), some versions of Windows may use them |
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54 TUint16 iTimeC; ///< :14 Creation time |
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55 TUint16 iDateC; ///< :16 Creation date |
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56 TUint16 iReserved2; ///< :18 2 reserved bytes(in our implementation), FAT specs say that this is "last access date". Rugged FAT uses them as a special entry ID |
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57 TUint16 iStartClusterHi; ///< :20 High 16 bits of the File/Directory cluster number (Fat32 only) |
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58 TUint16 iTime; ///< :22 last write access time |
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59 TUint16 iDate; ///< :24 last write access date |
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60 TUint16 iStartClusterLo; ///< :26 Low 16 bits of the File/Directory cluster number |
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61 TUint32 iSize; ///< :28 File/Directory size in bytes |
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62 }; |
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63 |
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64 |
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65 //------------------------------------------------------------------------------------------------------------------- |
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66 |
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67 /** |
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68 Provides access to the Fat directory entry parameters |
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69 */ |
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70 class TFatDirEntry |
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71 { |
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72 public: |
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73 inline TFatDirEntry(); |
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74 inline void InitZ(); |
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75 |
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76 inline const TPtrC8 Name() const; |
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77 inline TInt Attributes() const; |
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78 inline TTime Time(TTimeIntervalSeconds aOffset) const; |
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79 inline TInt StartCluster() const; |
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80 inline TUint32 Size() const; |
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81 inline TBool IsErased() const; |
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82 inline TBool IsCurrentDirectory() const; |
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83 inline TBool IsParentDirectory() const; |
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84 inline TBool IsEndOfDirectory() const; |
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85 inline TBool IsGarbage() const; |
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86 inline void SetName(const TDesC8& aDes); |
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87 inline void SetAttributes(TInt anAtt); |
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88 inline void SetTime(TTime aTime, TTimeIntervalSeconds aOffset); |
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89 inline void SetCreateTime(TTime aTime, TTimeIntervalSeconds aOffset); |
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90 inline void SetStartCluster(TInt aStartCluster); |
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91 inline void SetSize(TUint32 aFilesize); |
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92 inline void SetErased(); |
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93 inline void SetCurrentDirectory(); |
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94 inline void SetParentDirectory(); |
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95 inline void SetEndOfDirectory(); |
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96 inline TUint RuggedFatEntryId() const; |
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97 inline void SetRuggedFatEntryId(TUint16 aId); |
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98 |
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99 public: |
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100 void InitializeAsVFat(TUint8 aCheckSum); |
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101 void SetVFatEntry(const TDesC& aName,TInt aRemainderLen); |
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102 void ReadVFatEntry(TDes16& aVBuf) const; |
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103 inline TBool IsLongNameStart() const; |
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104 inline TBool IsVFatEntry() const; |
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105 inline TInt NumFollowing() const; |
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106 inline TUint8 CheckSum() const; |
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107 |
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108 |
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109 public: |
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110 TUint8 iData[KSizeOfFatDirEntry]; ///< The directory entry data |
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111 }; |
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112 |
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113 |
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114 |
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115 #endif //FAT_DIR_ENTRY_H |
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116 |
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