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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