1 | unit _FileTypes; |
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2 | |
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3 | interface |
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4 | |
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5 | uses |
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6 | TypeDefs, _TreeElement, Classes, Forms, _DataTypes; |
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7 | |
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8 | |
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9 | type |
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10 | TRawCache = record |
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11 | DatOffset: Integer; |
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12 | RawStream: TMemoryStream; |
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13 | end; |
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14 | |
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15 | TFile = class(TTreeElement) |
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16 | protected |
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17 | FFileInfo: TFileInfo; |
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18 | FFileStream: TMemoryStream; |
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19 | FRawCaches: array of TRawCache; |
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20 | |
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21 | FCached: Boolean; |
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22 | FChanged: Boolean; |
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23 | |
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24 | FDataFields: TBlock; |
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25 | |
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26 | FEditor: TFrame; |
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27 | FOpened: Boolean; |
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28 | |
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29 | function GetChildCount: Integer; override; |
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30 | function GetChild(ID: Integer): TTreeElement; override; |
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31 | function GetCaption: String; override; |
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32 | function GetType: String; override; |
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33 | function GetEditor: TFrame; |
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34 | function GetFieldByOffset(Offset: Integer): TDataField; |
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35 | function GetRawCacheID(Offset: Integer): Integer; |
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36 | procedure SetOpened(Opened: Boolean); virtual; |
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37 | published |
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38 | public |
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39 | constructor Create(ConnectionID, FileID: Integer); virtual; |
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40 | procedure Free; |
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41 | |
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42 | procedure InitDataFields; virtual; |
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43 | procedure InitEditor; virtual; |
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44 | |
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45 | procedure ReCreateFile(fs: TStream); |
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46 | |
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47 | procedure CacheFile; |
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48 | procedure CacheRawFile(Offset: Integer); |
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49 | procedure CacheAllRawFiles; |
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50 | procedure DiscardFileCache; |
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51 | procedure DiscardRawCache(Offset: Integer); |
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52 | procedure DiscardAllRawCaches; |
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53 | procedure StoreFileCache; |
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54 | procedure StoreRawCache(Offset: Integer); |
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55 | procedure StoreAllRawCaches; |
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56 | |
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57 | property FileStream: TMemoryStream read FFileStream; |
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58 | property FileInfo: TFileInfo read FFileInfo; |
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59 | |
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60 | property Cached: Boolean read FCached; |
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61 | property Changed: Boolean read FChanged write FChanged; |
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62 | |
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63 | property Editor: TFrame read GetEditor; |
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64 | property Opened: Boolean read FOpened write SetOpened; |
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65 | |
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66 | property FieldByOffset[Offset: Integer]: TDataField read GetFieldByOffset; |
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67 | end; |
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68 | |
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69 | |
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70 | TFileType = class of TFile; |
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71 | |
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72 | |
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73 | |
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74 | implementation |
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75 | |
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76 | uses |
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77 | DatLinks, RawList, ConnectionManager, Dialogs, _MetaTypes, _MetaManager, |
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78 | SysUtils; |
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79 | |
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80 | { TFileType } |
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81 | |
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82 | procedure TFile.CacheFile; |
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83 | begin |
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84 | if not Assigned(FFileStream) then |
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85 | begin |
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86 | FFileStream := TMemoryStream.Create; |
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87 | ConManager.Connection[FConnectionID].LoadDatFile(FFileInfo.ID, TStream(FFileStream)); |
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88 | end; |
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89 | end; |
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90 | |
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91 | |
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92 | procedure TFile.CacheRawFile(Offset: Integer); |
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93 | var |
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94 | i: Integer; |
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95 | begin |
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96 | for i := 0 to High(FRawCaches) do |
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97 | begin |
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98 | if FRawCaches[i].DatOffset = Offset then |
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99 | begin |
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100 | if not Assigned(FRawCaches[i].RawStream) then |
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101 | begin |
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102 | FRawCaches[i].RawStream := TMemoryStream.Create; |
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103 | ConManager.Connection[ConnectionID].LoadRawFile(FFileInfo.ID, Offset, TStream(FRawCaches[i].RawStream)); |
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104 | end; |
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105 | end; |
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106 | end; |
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107 | end; |
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108 | |
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109 | procedure TFile.CacheAllRawFiles; |
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110 | var |
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111 | i: Integer; |
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112 | begin |
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113 | for i := 0 to High(FRawCaches) do |
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114 | CacheRawFile(FRawCaches[i].DatOffset); |
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115 | end; |
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116 | |
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117 | |
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118 | |
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119 | procedure TFile.DiscardFileCache; |
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120 | begin |
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121 | if Assigned(FFileStream) then |
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122 | FFileStream.Free; |
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123 | FFileStream := nil; |
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124 | end; |
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125 | |
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126 | procedure TFile.DiscardRawCache(Offset: Integer); |
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127 | var |
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128 | i: Integer; |
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129 | begin |
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130 | for i := 0 to High(FRawCaches) do |
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131 | begin |
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132 | if FRawCaches[i].DatOffset = Offset then |
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133 | begin |
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134 | if Assigned(FRawCaches[i].RawStream) then |
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135 | FRawCaches[i].RawStream.Free; |
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136 | FRawCaches[i].RawStream := nil; |
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137 | end; |
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138 | end; |
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139 | end; |
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140 | |
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141 | procedure TFile.DiscardAllRawCaches; |
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142 | var |
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143 | i: Integer; |
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144 | begin |
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145 | for i := 0 to High(FRawCaches) do |
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146 | DiscardRawCache(FRawCaches[i].DatOffset); |
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147 | end; |
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148 | |
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149 | procedure TFile.StoreFileCache; |
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150 | begin |
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151 | Exit; |
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152 | end; |
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153 | |
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154 | procedure TFile.StoreRawCache(Offset: Integer); |
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155 | begin |
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156 | Exit; |
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157 | end; |
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158 | |
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159 | procedure TFile.StoreAllRawCaches; |
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160 | var |
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161 | i: Integer; |
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162 | begin |
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163 | for i := 0 to High(FRawCaches) do |
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164 | StoreRawCache(FRawCaches[i].DatOffset); |
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165 | end; |
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166 | |
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167 | |
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168 | |
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169 | |
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170 | |
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171 | procedure TFile.SetOpened(Opened: Boolean); |
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172 | begin |
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173 | FOpened := Opened; |
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174 | end; |
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175 | |
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176 | |
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177 | constructor TFile.Create(ConnectionID, FileID: Integer); |
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178 | var |
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179 | rawlist: TRawDataList; |
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180 | i: Integer; |
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181 | begin |
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182 | FConnectionID := ConnectionID; |
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183 | FFileInfo := ConManager.Connection[ConnectionID].GetFileInfo(FileID); |
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184 | |
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185 | rawlist := ConManager.Connection[ConnectionID].GetRawList(FileID); |
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186 | SetLength(FRawCaches, Length(rawlist)); |
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187 | for i := 0 to High(rawlist) do |
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188 | FRawCaches[i].DatOffset := rawlist[i].SrcOffset; |
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189 | |
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190 | FCached := False; |
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191 | FChanged := False; |
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192 | |
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193 | FDataFields := nil; |
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194 | FEditor := nil; |
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195 | |
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196 | if not (Self is TFile_Empty) then |
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197 | InitDataFields; |
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198 | end; |
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199 | |
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200 | |
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201 | procedure TFile.Free; |
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202 | begin |
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203 | FDataFields.Free; |
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204 | end; |
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205 | |
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206 | |
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207 | function TFile.GetFieldByOffset(Offset: Integer): TDataField; |
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208 | begin |
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209 | Result := FDataFields.FieldByOffset[Offset]; |
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210 | end; |
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211 | |
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212 | |
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213 | function TFile.GetRawCacheID(Offset: Integer): Integer; |
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214 | var |
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215 | i: Integer; |
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216 | begin |
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217 | Result := -1; |
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218 | for i := 0 to High(FRawCaches) do |
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219 | if FRawCaches[i].DatOffset = Offset then |
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220 | Result := i; |
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221 | end; |
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222 | |
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223 | function TFile.GetType: String; |
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224 | begin |
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225 | Result := FFileInfo.Extension; |
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226 | end; |
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227 | |
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228 | function TFile.GetCaption: String; |
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229 | begin |
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230 | Result := FFileInfo.Name; |
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231 | if Result = '' then |
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232 | Result := 'Unnamed'; |
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233 | Result := Result + ' (' + IntToStr(FFileInfo.ID) + ')'; |
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234 | end; |
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235 | |
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236 | function TFile.GetChild(ID: Integer): TTreeElement; |
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237 | begin |
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238 | Result := FDataFields.Child[ID]; |
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239 | end; |
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240 | |
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241 | function TFile.GetChildCount: Integer; |
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242 | begin |
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243 | if FDataFields <> nil then |
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244 | Result := FDataFields.ChildCount |
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245 | else |
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246 | Result := 0; |
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247 | end; |
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248 | |
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249 | |
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250 | function TFile.GetEditor: TFrame; |
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251 | begin |
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252 | if not Assigned(FEditor) then |
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253 | InitEditor; |
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254 | Result := FEditor; |
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255 | end; |
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256 | |
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257 | |
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258 | procedure TFile.InitDataFields; |
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259 | begin |
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260 | if Assigned(FDataFields) then |
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261 | Exit; |
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262 | FFileStream := TMemoryStream.Create; |
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263 | ConManager.Connection[FConnectionID].LoadDatFile(FFileInfo.ID, TStream(FFileStream)); |
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264 | end; |
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265 | |
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266 | |
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267 | procedure TFile.InitEditor; |
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268 | begin |
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269 | Exit; |
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270 | end; |
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271 | |
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272 | |
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273 | //********************************************************* |
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274 | //********************************************************* |
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275 | //********************************************************* |
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276 | procedure TFile.ReCreateFile(fs: TStream); |
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277 | const |
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278 | temp0: array[0..31] of Byte = |
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279 | ($AD,$DE,$AD,$DE,$AD,$DE,$AD,$DE, |
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280 | $AD,$DE,$AD,$DE,$AD,$DE,$AD,$DE, |
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281 | $AD,$DE,$AD,$DE,$AD,$DE,$AD,$DE, |
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282 | $AD,$DE,$AD,$DE,$AD,$DE,$AD,$DE); |
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283 | var |
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284 | count: Integer; |
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285 | begin |
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286 | FDataFields.WriteData(fs); |
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287 | count := fs.Size mod 32; |
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288 | if count > 0 then |
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289 | fs.Write(temp0[count], 32 - count); |
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290 | end; |
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291 | //********************************************************* |
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292 | //********************************************************* |
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293 | //********************************************************* |
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294 | |
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295 | end. |
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