| 1 |
unit GikoDB; |
| 2 |
|
| 3 |
(*! |
| 4 |
\file GikoDB.pas |
| 5 |
\brief 膂≧?????若?帥???若??/span> |
| 6 |
|
| 7 |
$Id$ |
| 8 |
|
| 9 |
|
| 10 |
<h2>???若?帥???若?鴻?????若?????? 0.0d1</h2> |
| 11 |
<p> |
| 12 |
??2 罨≦?????鴻?????????激?若???ф????????? |
| 13 |
?????? 1 ???潟?若???????????????潟?若?????????????ｃ???????宴???????<br> |
| 14 |
???????ゃ?????????? (膃 1 ??????) ??????????若?????ゃ?????????????違?????????? |
| 15 |
</p> |
| 16 |
|
| 17 |
<hr> |
| 18 |
<h3>???＜?ゃ???ゃ?＜?若??lt;/h3> |
| 19 |
<table border="1" style="text-align:center"> |
| 20 |
<tr><td><a href="#header">??????</a></td></tr> |
| 21 |
<tr><td><a href="#info">?ゃ?潟?????＜?若?激?с?潟?祉???激?с??lt;/a></td></tr> |
| 22 |
<tr><td><a href="#cols">?????????鴻???祉???激?с??lt;/a></td></tr> |
| 23 |
<tr><td><a href="#atlb">?≪???宴?若?激?с?潟???若?????祉???激?с??lt;/a></td></tr> |
| 24 |
<tr><td><a href="#idex">?ゃ?潟???????鴻?祉???激?с??lt;/a></td></tr> |
| 25 |
<tr><td><a href="#sect">?祉???帥?祉???激?с??lt;/a></td></tr> |
| 26 |
<tr><td>??lt;/td></tr> |
| 27 |
<tr><td><a href="#idex">?ゃ?潟???????鴻?祉???激?с??lt;/a></td></tr> |
| 28 |
<tr><td><a href="#sect">?祉???帥?祉???激?с??lt;/a></td></tr> |
| 29 |
</table> |
| 30 |
<p> |
| 31 |
<b>网?荀?</b><br> |
| 32 |
??FAT ???＜?ゃ???激?鴻??????罔＜????罕????????ｃ???????? |
| 33 |
</p> |
| 34 |
|
| 35 |
<hr> |
| 36 |
<a name="header"></a> |
| 37 |
<h3>??????</h3> |
| 38 |
<table border="1" style="text-align:center"> |
| 39 |
<tr><td>?激?違??????lt;/td><td>4 byte</td></tr> |
| 40 |
<tr><td>?＜?吾?ｃ?若???若?吾?с??lt;/td><td>1 byte</td></tr> |
| 41 |
<tr><td>???ゃ???若???若?吾?с??lt;/td><td>1 byte</td></tr> |
| 42 |
<tr><td>?????若?号?????</td><td>1 byte</td></tr> |
| 43 |
<tr><td>?????吾?с?潟???潟????lt;/td><td>1 byte</td></tr> |
| 44 |
</table> |
| 45 |
<p> |
| 46 |
<b>?激?違??????lt;/b><br> |
| 47 |
??'gkdb' ??????膤祉???????????潟???ｃ?≪?潟?ф?主???????<br> |
| 48 |
?????????潟???ｃ?≪?潟?с?????潟?若?????主????????????ゃ?????潟???ｃ?≪?潟??羆冴?障???? |
| 49 |
</p> |
| 50 |
<p> |
| 51 |
<b>?＜?吾?ｃ?若???若?吾?с??lt;/b><br> |
| 52 |
?????＜?ゃ???????若?????????＜?吾?ｃ?若???若?吾?с?潟?? |
| 53 |
</p> |
| 54 |
<p> |
| 55 |
<b>???ゃ???若???若?吾?с??lt;/b><br> |
| 56 |
?????＜?ゃ???????若???????????ゃ???若???若?吾?с?潟?? |
| 57 |
</p> |
| 58 |
<p> |
| 59 |
<b>?????若?号?????</b><br> |
| 60 |
???????若?鴻????????ゃ?????宴?????? |
| 61 |
綽??????ゃ???ゃ??ぇ絨?????若?吾?с?潟??ぇ絨???????莠??с????篋???<br /> |
| 62 |
??篁ヤ???????ゃ?? |
| 63 |
</p> |
| 64 |
<table border="1"> |
| 65 |
<tr><td>???????????????若??lt;/td><td>0</td></tr> |
| 66 |
<tr><td>?≪?????＜?????若??lt;/td><td>1</td></tr> |
| 67 |
<tr><td>???若?帥?????若??lt;/td><td>2</td></tr> |
| 68 |
<tr><td>Release Candidate</td><td>3</td></tr> |
| 69 |
<tr><td>???????ャ?若?????若??lt;/td><td>4</td></tr> |
| 70 |
<tr><td>???＜?ゃ???????鴻???????若??lt;/td><td>5</td></tr> |
| 71 |
</table> |
| 72 |
<p> |
| 73 |
<b>?????吾?с?潟???潟????lt;/b><br> |
| 74 |
???????若?合??垩?????? |
| 75 |
</p> |
| 76 |
<p> |
| 77 |
|
| 78 |
<hr> |
| 79 |
<a name="section"></a> |
| 80 |
<h3>?祉???激?с??lt;/h3> |
| 81 |
<table border="1" style="text-align:center"> |
| 82 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 83 |
<tr><td>?祉???激?с?潟?帥?ゃ??</td><td>4 chars</td></tr> |
| 84 |
<tr><td>?祉???激?с?喝??絎?lt;/td><td>???</td></tr> |
| 85 |
</table> |
| 86 |
<p> |
| 87 |
<b>?祉???激?с?潟?泣?ゃ??lt;/b><br> |
| 88 |
???祉???激?с?喝??????泣?ゃ?冴?? |
| 89 |
?上?????≪?????鴻???祉???激?с?潟?泣?ゃ?冴????膊?????篋??ф????祉???激?с?潟???????? |
| 90 |
?ゃ?障?????祉???激?с?潟?泣?ゃ?冴????昆?????????泣?ゃ?冴?????障??????<br> |
| 91 |
??緇?膓????祉???激?с?潟???????翫??? 0 ???????? |
| 92 |
</p> |
| 93 |
<p> |
| 94 |
<b>?祉???激?с?潟?帥?ゃ??</b><br> |
| 95 |
???祉???激?с?潟??┏蕁???茵??? 4 byte ????絖?????<br> |
| 96 |
??篏帥?????????ｃ??腥冴???祉???激?с?潟? 0 ?????≪???????? |
| 97 |
</p> |
| 98 |
|
| 99 |
<hr> |
| 100 |
<a name="info"></a> |
| 101 |
<h3>?ゃ?潟?????＜?若?激?с?潟?祉???激?с??lt;/h3> |
| 102 |
<table border="1" style="text-align:center"> |
| 103 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 104 |
<tr><td>'info'</td><td>4 chars</td></tr> |
| 105 |
<tr><td>?祉???帥?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 106 |
<tr><td>???潟?若????lt;/td><td>4 byte</td></tr> |
| 107 |
</table> |
| 108 |
<p> |
| 109 |
<b>?祉???帥?泣?ゃ??lt;/b><br> |
| 110 |
??<a href="#sect">?祉???帥?祉???激?с??lt;/a>? 1 ?祉???帥??????? byte ?違???? |
| 111 |
</p> |
| 112 |
<p> |
| 113 |
<b>???潟?若????lt;/b><br> |
| 114 |
?????若?帥???若?劫????????潟?若???違???? |
| 115 |
</p> |
| 116 |
|
| 117 |
<hr> |
| 118 |
<a name="cols"></a> |
| 119 |
<h3>?????????鴻???祉???激?с??lt;/h3> |
| 120 |
<table border="1" style="text-align:center"> |
| 121 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 122 |
<tr><td>'cols'</td><td>4 chars</td></tr> |
| 123 |
<tr><td>????????lt;/td><td>4 byte</td></tr> |
| 124 |
<tr><td>????????0</td><td>pascal string</td></tr> |
| 125 |
<tr><td>???若?帥?帥?ゃ??0</td><td>4 chars</td></tr> |
| 126 |
<tr><td>??lt;/td><td></td></tr> |
| 127 |
<tr><td>????????n</td><td>pascal string</td></tr> |
| 128 |
<tr><td>???若?帥?帥?ゃ??n</td><td>4 chars</td></tr> |
| 129 |
</table> |
| 130 |
<p> |
| 131 |
<b>?狗??</b><br> |
| 132 |
??茲??違???祉???激?с?潟???障?????ｃ???菴違????篋????堺?ャ?障?????? |
| 133 |
</p> |
| 134 |
<p> |
| 135 |
<b>????????lt;/b><br> |
| 136 |
??緇?膓????????????????違?? |
| 137 |
</p> |
| 138 |
<p> |
| 139 |
<b>????????</b><br> |
| 140 |
??絎??????≪???祉?鴻????????????????????????腱違??<br> |
| 141 |
??腟?腴??障???????ゃ???????障?上??罕?膀????????????????????????絖????????ｃ???????? |
| 142 |
</p> |
| 143 |
<p> |
| 144 |
<b>???若?帥?帥?ゃ??</b><br> |
| 145 |
???主??????????????若?帥???帥?ゃ????<br> |
| 146 |
???祉???激?с?潟?泣?ゃ?冴??????????障?丞?篋??????翫???? |
| 147 |
??荅括完??札筝????????? |
| 148 |
</p> |
| 149 |
<p> |
| 150 |
??茫????ゃ? 1 byte 羔?莢祉??????<br> |
| 151 |
???医?ゃ??腓冴?????若?帥?帥?ゃ???????? 2 罅????医?? byte ?違??茵???????????<br> |
| 152 |
??pascal string ? 1 byte ????絖????激????????????絖????? |
| 153 |
data ? 4 byte ?????若?翠?激?????????????若?帥??<br> |
| 154 |
?????????????????????????????祉???激?с?潟?泣?ゃ?冴???????? |
| 155 |
???若?翠?激??腓冴???ゃ???激???????障???????????? |
| 156 |
?ゃ?障????罨＜?????若?帥???????????????若?翠? + 4 byte?????膊???綽?荀?????????<br> |
| 157 |
??unix time ????膊?腱???茵????? 8 byte integer ?с??UTC ????エ???????? |
| 158 |
</p> |
| 159 |
<table border="1"> |
| 160 |
<tr><td>茫?????lt;/td><td>'bool'</td></tr> |
| 161 |
<tr><td rowspan="4">膃?垬????贋??lt;/td><td>'si01'</td></tr> |
| 162 |
<tr><td>'si02'</td></tr> |
| 163 |
<tr><td>'si04'</td></tr> |
| 164 |
<tr><td>'si08'</td></tr> |
| 165 |
<tr><td rowspan="4">膃?埇?＜???贋??lt;/td><td>'ui01'</td></tr> |
| 166 |
<tr><td>'ui02'</td></tr> |
| 167 |
<tr><td>'ui04'</td></tr> |
| 168 |
<tr><td>'ui08'</td></tr> |
| 169 |
<tr><td rowspan="2">羌???絨??lt;/td><td>'fp04'</td></tr> |
| 170 |
<tr><td>'fp08'</td></tr> |
| 171 |
<tr><td>pascal string</td><td>'pstr'</td></tr> |
| 172 |
<tr><td>data (long string)</td><td>'data'</td></tr> |
| 173 |
<tr><td>unix time</td><td>'time'</td></tr> |
| 174 |
</table> |
| 175 |
|
| 176 |
<hr> |
| 177 |
<a name="atlb"></a> |
| 178 |
<h3>?≪???宴?若?激?с?潟???若?????祉???激?с??lt;/h3> |
| 179 |
<table border="1" style="text-align:center"> |
| 180 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 181 |
<tr><td>'atlb'</td><td>4 chars</td></tr> |
| 182 |
<tr><td>膓?膓????若????lt;/td><td>4 byte</td></tr> |
| 183 |
<tr><td>??lt;/td><td></td></tr> |
| 184 |
<tr><td>膓?膓????若????lt;/td><td>4 byte</td></tr> |
| 185 |
</table> |
| 186 |
<p> |
| 187 |
<b>网?荀?</b><br> |
| 188 |
?????????若???????ゃ?潟???????鴻??/span> |
| 189 |
<a href="#sect">?祉????lt;/a>???ゃ?潟???????鴻??絲障?????ｃ???????? |
| 190 |
</p> |
| 191 |
<p> |
| 192 |
<b>?狗??</b><br> |
| 193 |
??茲??違???祉???激?с?潟???障?????ｃ???菴違????篋????堺?ャ?障?????? |
| 194 |
</p> |
| 195 |
<p> |
| 196 |
<b>膓?膓????若????lt;/b><br> |
| 197 |
??0 ????紮??障????膓?膓??????≪???宴?若?激?с?潟???若?????ゃ?潟???????鴻?? |
| 198 |
膓?膓????????翫??? 0xffffffff?? |
| 199 |
</p> |
| 200 |
|
| 201 |
<hr> |
| 202 |
<a name="idex"></a> |
| 203 |
<h3>?純?若??羝??帥?ゃ?潟???????鴻?祉???激?с??lt;/h3> |
| 204 |
<table border="1" style="text-align:center"> |
| 205 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 206 |
<tr><td>'idex'</td><td>4 chars</td></tr> |
| 207 |
<tr><td>?????????lt;/td><td>2 byte</td></tr> |
| 208 |
<tr><td>??????????lt;/td><td>2 byte</td></tr> |
| 209 |
<tr><td>???若???????lt;/td><td>4 byte</td></tr> |
| 210 |
<tr><td>??lt;/td><td>4 byte</td></tr> |
| 211 |
<tr><td>??lt;/td><td></td></tr> |
| 212 |
<tr><td>???若???????lt;/td><td>4 byte</td></tr> |
| 213 |
<tr><td>??lt;/td><td>4 byte</td></tr> |
| 214 |
</table> |
| 215 |
<p> |
| 216 |
<b>网?荀?</b><br> |
| 217 |
?????潟?若?????劫??????????с?純?若???????ゃ?潟???????鴻??<br> |
| 218 |
??絨?????????????ゃ????????????????ゃ?潟???????鴻??????????????????????? |
| 219 |
</p> |
| 220 |
<p> |
| 221 |
<b>?狗??</b><br> |
| 222 |
??茲??違???祉???激?с?潟???障?????ｃ???菴違????篋????堺?ャ?障?????? |
| 223 |
</p> |
| 224 |
<p> |
| 225 |
<b>?????????lt;/b><br> |
| 226 |
??0 ?????違?????????????ゃ?潟???????鴻????????????????????ゃ?潟???????鴻????茵????? |
| 227 |
</p> |
| 228 |
<p> |
| 229 |
<b>??????????lt;/b><br> |
| 230 |
???? bit ???????ゃ?潟???????鴻???≪?????????????ｃ??篆?????????<br> |
| 231 |
???????????ｃ???荀с??札筝????????? |
| 232 |
</p> |
| 233 |
<table border="1"> |
| 234 |
<tr><td>0bit</td><td>?純?若?????若???若??0...????, 1...????</td></tr> |
| 235 |
</table> |
| 236 |
<p> |
| 237 |
<b>???若???????lt;/b><br> |
| 238 |
??0 ????紮??障??<a href="#atlb">?≪???宴?若?激?с?潟???若????lt;/a>???ゃ?潟???????鴻??<br> |
| 239 |
</p> |
| 240 |
<p> |
| 241 |
<b>??lt;/b><br> |
| 242 |
?????潟?若?????主????????????ゃ??<br> |
| 243 |
?????潟?若???????ゃ???主????????????????? |
| 244 |
?ゃ?潟???????鴻?????ゃ??????????茲??????ゃ???主?????????篋????????? |
| 245 |
?ゃ??紊??眼????????????????????紊??眼???????????????????<br> |
| 246 |
??4 byte ??莇????????若?帥?帥?ゃ??????????????????激?ュ?ゃ???主??????? |
| 247 |
</p> |
| 248 |
|
| 249 |
<hr> |
| 250 |
<a name="sect"></a> |
| 251 |
<h3>?祉???帥?祉???激?с??lt;/h3> |
| 252 |
<table border="1" style="text-align:center"> |
| 253 |
<tr><td>?祉???激?с?潟?泣?ゃ??lt;/td><td>4 byte</td></tr> |
| 254 |
<tr><td>'sect'</td><td>4 chars</td></tr> |
| 255 |
<tr><td>?祉???激?с?括???lt;/td><td>4 byte</td></tr> |
| 256 |
<tr><td>?祉????</td><td></td></tr> |
| 257 |
<tr><td>??lt;/td><td></td></tr> |
| 258 |
<tr><td>?祉????</td><td></td></tr> |
| 259 |
</table> |
| 260 |
<p> |
| 261 |
<b>?祉???激?с?括???lt;/b><br> |
| 262 |
???祉???激?с?潟??研?潟??茘??ャ????????????垩?с????<br> |
| 263 |
???祉???帥?祉???激?с?潟??茲??違?????翫?????祉???激?с?括??垩???????????/span> |
| 264 |
?祉???睡??垩???蚊??綵????????障???? |
| 265 |
</p> |
| 266 |
<p> |
| 267 |
<b>?祉????lt;/b><br> |
| 268 |
?????????????ゃ???????主????????? |
| 269 |
</p> |
| 270 |
*) |
| 271 |
interface |
| 272 |
|
| 273 |
//================================================== |
| 274 |
uses |
| 275 |
//================================================== |
| 276 |
|
| 277 |
Classes, SysUtils, IniFiles, |
| 278 |
Windows, |
| 279 |
YofUtils; |
| 280 |
|
| 281 |
|
| 282 |
//================================================== |
| 283 |
type |
| 284 |
//================================================== |
| 285 |
|
| 286 |
TGikoDB = class; |
| 287 |
|
| 288 |
{!*********************************************************** |
| 289 |
\brief ?祉???激?с??/span> |
| 290 |
************************************************************} |
| 291 |
TSection = class( TObject ) |
| 292 |
private |
| 293 |
FMemory : Pointer; //!< ?祉???激?с?潟?≪??????/span> |
| 294 |
FParent : TGikoDB; |
| 295 |
|
| 296 |
function GetSize : Longword; |
| 297 |
procedure SetSize( newSize : Longword ); |
| 298 |
function GetType : Longword; |
| 299 |
procedure SetType( newType : Longword ); |
| 300 |
function GetNext : Pointer; |
| 301 |
function GetContents : Pointer; |
| 302 |
|
| 303 |
public |
| 304 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 305 |
|
| 306 |
property Memory : Pointer read FMemory; |
| 307 |
property Size : Longword read GetSize; |
| 308 |
property SectionType : Longword read GetType; |
| 309 |
property Next : Pointer read GetNext; |
| 310 |
end; |
| 311 |
|
| 312 |
{!*********************************************************** |
| 313 |
\brief ?祉???帥?祉???激?с??/span> |
| 314 |
************************************************************} |
| 315 |
TSector = class( TSection ) |
| 316 |
private |
| 317 |
FSectionNo : Longword; //!< ?祉???激?с?括???/span> |
| 318 |
FCount : Integer; //!< ?祉???炊??/span> |
| 319 |
|
| 320 |
function GetContents : Pointer; |
| 321 |
function GetSector( index : Integer ) : Pointer; |
| 322 |
|
| 323 |
public |
| 324 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 325 |
|
| 326 |
property Count : Integer read FCount; |
| 327 |
property Sector[ index : Integer ] : Pointer read GetSector; default; |
| 328 |
end; |
| 329 |
|
| 330 |
{!*********************************************************** |
| 331 |
\brief ?純?若??羝??帥?ゃ?潟???????号???篏? |
| 332 |
************************************************************} |
| 333 |
RSortIndex = record |
| 334 |
FATIndex : Word; //!< ?≪???宴?若?激?с?潟???若?????ゃ?潟????????/span> |
| 335 |
FValue : Longword; //!< ??/span> |
| 336 |
end; |
| 337 |
|
| 338 |
PSortIndex = ^RSortIndex; |
| 339 |
|
| 340 |
{!*********************************************************** |
| 341 |
\brief ?純?若??羝??帥?ゃ?潟????????/span> |
| 342 |
************************************************************} |
| 343 |
TSortIndex = class( TSection ) |
| 344 |
private |
| 345 |
FColumnIndex : Word; //!< ???????ゃ?潟????????/span> |
| 346 |
FColumnProperty : Word; //!< ?ゃ?潟???????鴻??????????/span> |
| 347 |
|
| 348 |
function GetContents : Pointer; |
| 349 |
function GetCount : Integer; |
| 350 |
function GetItem( index : Integer ) : PSortIndex; |
| 351 |
|
| 352 |
public |
| 353 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 354 |
|
| 355 |
property Count : Integer read GetCount; |
| 356 |
property Items[ index : Integer ] : PSortIndex read GetItem; default; |
| 357 |
property ColumnIndex : Word read FColumnIndex; |
| 358 |
property ColumnProperty : Word read FColumnProperty; |
| 359 |
end; |
| 360 |
|
| 361 |
{!*********************************************************** |
| 362 |
\brief ?≪???宴?若?激?с?潟???若????/span> |
| 363 |
************************************************************} |
| 364 |
TAllocationTable = class( TSection ) |
| 365 |
private |
| 366 |
function GetTable( index : Integer ) : Longword; |
| 367 |
|
| 368 |
public |
| 369 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 370 |
|
| 371 |
property Table[ index : Integer ] : Longword read GetTable; default; |
| 372 |
end; |
| 373 |
|
| 374 |
{!*********************************************************** |
| 375 |
\brief ?????? |
| 376 |
************************************************************} |
| 377 |
TColumn = class( TObject ) |
| 378 |
private |
| 379 |
FIndex : Word; //!< ???????ゃ?潟????????/span> |
| 380 |
FType : Longword; //!< ???若?帥?帥?ゃ?? |
| 381 |
|
| 382 |
public |
| 383 |
constructor Create( colIndex : Word; colType : Longword ); |
| 384 |
|
| 385 |
property ColumnIndex : Word read FIndex; |
| 386 |
property ColumnType : Longword read FType; |
| 387 |
end; |
| 388 |
|
| 389 |
{!*********************************************************** |
| 390 |
\brief ?????????鴻?? |
| 391 |
************************************************************} |
| 392 |
TColumnList = class( TSection ) |
| 393 |
private |
| 394 |
FList : THashedStringList; //!< ?????????鴻????? |
| 395 |
FColumnEnd : PChar; //!< 罨＜????????菴遵??篏?臀?/span> |
| 396 |
|
| 397 |
function GetContents : Pointer; |
| 398 |
function GetColumnCount : Longword; |
| 399 |
procedure SetColumnCount( n : Longword ); |
| 400 |
|
| 401 |
function GetItemFromIndex( index : Integer ) : TColumn; |
| 402 |
function GetItemFromColumnIndex( index : Integer ) : TColumn; |
| 403 |
function GetItemFromName( const columnName : string ) : TColumn; |
| 404 |
procedure WriteBack; |
| 405 |
|
| 406 |
public |
| 407 |
//! \todo ???ゃ????????????篁ラ??? index ???ゃ???????? |
| 408 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 409 |
destructor Destroy; override; |
| 410 |
|
| 411 |
{! |
| 412 |
\warning ??綺???絎??с??????綺????荀????翫????/span> |
| 413 |
ObjectsFromColumnIndex ??篏睡????????????? |
| 414 |
} |
| 415 |
property Objects[ index : Integer ] : TColumn read GetItemFromIndex; |
| 416 |
{! |
| 417 |
\warning ?????????冴???????純?с????? Objects ??篏睡????????????????????????? |
| 418 |
} |
| 419 |
property ObjectsFromColumnIndex[ index : Integer ] : TColumn |
| 420 |
read GetItemFromColumnIndex; |
| 421 |
property Items[ const columnName : string ] : TColumn read GetItemFromName; default; |
| 422 |
|
| 423 |
{! |
| 424 |
\brief ????????????/span> |
| 425 |
\param columnName ???ゃ???????????? |
| 426 |
\todo ???ゃ????????????篁ラ??? index ???ゃ???????? |
| 427 |
|
| 428 |
columnName ??絖??????????翫???????????∴???????篋???篆?荐若?????????障???? |
| 429 |
} |
| 430 |
procedure Delete( const columnName : string ); |
| 431 |
|
| 432 |
{! |
| 433 |
\brief ????????申?? |
| 434 |
\param columnName 菴遵?????????????? |
| 435 |
\param columnType 菴遵?????????????????若?帥?帥?ゃ?? |
| 436 |
|
| 437 |
columnName ???≪??????????翫???????????∴???????篋???篆?荐若?????????障???? |
| 438 |
} |
| 439 |
procedure Add( const columnName : string; columnType : Longword ); |
| 440 |
end; |
| 441 |
|
| 442 |
{!*********************************************************** |
| 443 |
\brief ?ゃ?潟?????＜?若?激?с?潟?祉???激?с??/span> |
| 444 |
************************************************************} |
| 445 |
TInfomation = class( TSection ) |
| 446 |
private |
| 447 |
function GetSectorSize : Longword; |
| 448 |
function GetRecordCount : Longword; |
| 449 |
|
| 450 |
public |
| 451 |
constructor Create( parent : TGikoDB; const address : Pointer ); |
| 452 |
|
| 453 |
property SectorSize : Longword read GetSectorSize; |
| 454 |
property RecordCount : Longword read GetRecordCount; |
| 455 |
end; |
| 456 |
|
| 457 |
{!*********************************************************** |
| 458 |
\brief ???潟?若?? |
| 459 |
************************************************************} |
| 460 |
TRecord = class( TObject ) |
| 461 |
private |
| 462 |
FParent : TGikoDB; |
| 463 |
FSectorNo : Longword; //!< ?祉???睡???/span> |
| 464 |
|
| 465 |
//! \todo 篏???筝?/span> |
| 466 |
function GetStringByName( const columnName : string ) : string; |
| 467 |
//! \todo 篏???筝?/span> |
| 468 |
procedure SetStringByName( |
| 469 |
const columnName : string; |
| 470 |
const value : string ); |
| 471 |
//! \todo 篏???筝?/span> |
| 472 |
function GetStringByIndex( index : Longword ) : string; |
| 473 |
//! \todo 篏???筝?/span> |
| 474 |
function GetIntegerByName( const columnName : string ) : Integer; |
| 475 |
//! \todo 篏???筝?/span> |
| 476 |
procedure SetIntegerByName( |
| 477 |
const columnName : string; |
| 478 |
const value : Integer ); |
| 479 |
//! \todo 篏???筝?/span> |
| 480 |
function GetIntegerByIndex( index : Longword ) : Integer; |
| 481 |
|
| 482 |
public |
| 483 |
constructor Create( parent : TGikoDB; sectorNo : Longword ); |
| 484 |
|
| 485 |
//! \brief ?ゃ????絖????у??鐚頥?? |
| 486 |
property StringValue[ const columnName : string ] : string |
| 487 |
read GetStringByName write SetStringByName; |
| 488 |
|
| 489 |
//! \brief ?ゃ???医?ゃ?у??鐚頥?? |
| 490 |
property IntegerValue[ const columnName : string ] : Integer |
| 491 |
read GetIntegerByName write SetIntegerByName; |
| 492 |
end; |
| 493 |
|
| 494 |
{!*********************************************************** |
| 495 |
\brief ?泣???若?????????????????若?帥???若?鴻?????若?????? |
| 496 |
************************************************************} |
| 497 |
EGikoDBUnssuportedFormatError = class( Exception ); |
| 498 |
|
| 499 |
{!*********************************************************** |
| 500 |
\brief 膂≧?????若?帥???若??/span> |
| 501 |
************************************************************} |
| 502 |
TGikoDB = class( TObject ) |
| 503 |
private |
| 504 |
FFilePath : string; //!< ?????????＜?ゃ????????/span> |
| 505 |
FFile : TMappedFile; //!< ???若?帥???若?鴻??篆??????????＜?ゃ??/span> |
| 506 |
FPageSize : Longword; //!< ???若?吾?泣?ゃ??/span> |
| 507 |
FSectorSize : Integer; //!< ?祉???帥?泣?ゃ??/span> |
| 508 |
FSections : TList; //!< ?祉???激?с?潟???鴻?? |
| 509 |
FChanged : Boolean; //!< FSections ????罕?膀???綽?荀??? |
| 510 |
|
| 511 |
FInfomation : TInfomation; |
| 512 |
FColumnList : TColumnList; |
| 513 |
FSectors : TList; |
| 514 |
FIndexes : TList; |
| 515 |
FAllocationTable : TAllocationTable; |
| 516 |
|
| 517 |
procedure CreateInitialSections; |
| 518 |
procedure ReadSections; |
| 519 |
procedure ReadSection0_0d1( const address : PChar ); |
| 520 |
|
| 521 |
{! |
| 522 |
\brief ?祉???激?с?潟????? |
| 523 |
\warning 緇??у??? Changed ??絎?茵?????????????? |
| 524 |
\warning sectionSize ??????篏?????∈篆???????篋????????障???? |
| 525 |
} |
| 526 |
function CreateSection( |
| 527 |
sectionSize : Longword; |
| 528 |
sectionType : Longword |
| 529 |
) : Pointer; |
| 530 |
|
| 531 |
{! |
| 532 |
\brief ?祉???激?с?潟???≦宍?紫軒絨?span> |
| 533 |
\warning 緇??у??? Changed ??絎?茵?????????????? |
| 534 |
\warning 紊?????翫?????祉???激?с?潟???≪?????鴻??紊?????障???? |
| 535 |
\warning section ??????祉???激?с?潟????絎?????篋????堺?ャ?障?????? |
| 536 |
腥冴???祉???激?с?潟??腆坂???????? CreateSection ??篏睡??????????????? |
| 537 |
} |
| 538 |
procedure ReallocateSection( |
| 539 |
section : TSection; |
| 540 |
sectionSize : Longword ); |
| 541 |
|
| 542 |
{! |
| 543 |
\brief ?祉???激?с?恰???宴??茯??睡?眼????TGikoDB ?????鴻????罕?膀????? |
| 544 |
\param force 茯??睡?眼????筝?綽?荀????ゆ?????????翫????綣桁?句??????睡?眼???障???? |
| 545 |
\warning ?祉???激?с?潟???吾??紊?????緇??у???絎?茵?????????????? |
| 546 |
\warning ???????祉???激?с?潟?????鴻??В?障?????障???? |
| 547 |
} |
| 548 |
procedure Changed( force : Boolean = False ); |
| 549 |
|
| 550 |
{! |
| 551 |
\brief ???祉???帥?????劫????????????ゃ???≪???冴?? |
| 552 |
\param founds 荀??ゃ???ｃ???ゃ???????????? |
| 553 |
\param value ?≪???冴????/span> |
| 554 |
\param columnIndex ???????ゃ?潟????????/span> |
| 555 |
\return 1 ?や札筝?荀??ゃ???ｃ???翫??? True |
| 556 |
\warning ????激???ゃ???障??? 4 byte ??莇??????ゃ??????激?ュ?ゃ??羝＜????????????? |
| 557 |
\warning 絎??????ゃ?????ｃ????????激?ュ?ゃ???????翫?????????????????????????障???? |
| 558 |
} |
| 559 |
function SelectValue( |
| 560 |
founds : TList; |
| 561 |
value : Longword; |
| 562 |
columnIndex : Word = 0 |
| 563 |
) : Boolean; |
| 564 |
|
| 565 |
{! |
| 566 |
\brief ???潟?若??????緇? |
| 567 |
\param primalyValue ???潟?若????/span> |
| 568 |
\return ???潟?若???ゃ????眼???????潟?若?? |
| 569 |
\warning ?????ゃ?????????????医?ゃ?с???????絖??????翫?????????∽?違??け?????障???? |
| 570 |
} |
| 571 |
function GetRecordByInteger( primalyValue : Integer ) : TRecord; |
| 572 |
|
| 573 |
{! |
| 574 |
\brief ???潟?若??????緇? |
| 575 |
\param primalyValue ???潟?若???? |
| 576 |
\return ???潟?若????????眼???????潟?若?? |
| 577 |
\warning ?????ゃ??????????????絖????с??????医?ゃ???翫?????????∽?違??け?????障???? |
| 578 |
} |
| 579 |
function GetRecordByString( const primalyValue : string ) : TRecord; |
| 580 |
|
| 581 |
{! |
| 582 |
\brief ?祉???帥?????ゃ?潟?帥????緇? |
| 583 |
\param sectorNo ?祉???睡???/span> |
| 584 |
\return ?祉???帥???臀??????????ゃ?潟??/span> |
| 585 |
\todo 篏???筝?/span> |
| 586 |
} |
| 587 |
function GetSector( sectorNo : Integer ) : Pointer; |
| 588 |
|
| 589 |
public |
| 590 |
{! |
| 591 |
\brief ???若?帥???若?鴻?????若????/span> |
| 592 |
\param filePath ??????＜?ゃ????????/span> |
| 593 |
\param mode fmOpenRead (??????????) ?障??? fmOpenReadWrite |
| 594 |
\warning ?上???????若?吾?с?潟???????? 2GB ?障?с?????宴???障?????? |
| 595 |
絎?????????≪?????合??????????眼???????????障???? |
| 596 |
?泣?ゃ?冴???≪???????с?????????????????ф絵?????????????? |
| 597 |
\todo MapViewOfFile ? 64bit 腥咲?????≪???祉?鴻?с???????????≦宍?????? |
| 598 |
|
| 599 |
filePath ??絖?????????mode ? fmOpenReadWrite ????絎????????翫????/span> |
| 600 |
?域??????若?帥???若?鴻??篏????????障???? |
| 601 |
} |
| 602 |
constructor Create( |
| 603 |
const filePath : string; |
| 604 |
mode : Longword = fmOpenRead ); |
| 605 |
destructor Destroy; override; |
| 606 |
|
| 607 |
{! |
| 608 |
\brief ??絎鴻???????鴻?????＜?ゃ???????潟?? |
| 609 |
\param filePath 篆?絖????????＜?ゃ????????/span> |
| 610 |
\todo 篏???筝?/span> |
| 611 |
} |
| 612 |
procedure Dump( |
| 613 |
const filePath : string ); |
| 614 |
|
| 615 |
{! |
| 616 |
\brief ???潟?若??????緇? |
| 617 |
\param primalyValue ???潟?若????/span> |
| 618 |
\return ???潟?若???ゃ????眼???????潟?若?? |
| 619 |
\warning ?????ゃ?????????????医?ゃ?с???????絖??????翫?????????∽?違??け?????障???? |
| 620 |
} |
| 621 |
property RecordByInteger[ primalyValue : Integer ] : TRecord |
| 622 |
read GetRecordByInteger; |
| 623 |
|
| 624 |
{! |
| 625 |
\brief ???潟?若??????緇? |
| 626 |
\param primalyValue ???潟?若???? |
| 627 |
\return ???潟?若????????眼???????潟?若?? |
| 628 |
\warning ?????ゃ??????????????絖????с??????医?ゃ???翫?????????∽?違??け?????障???? |
| 629 |
} |
| 630 |
property RecordByString[ const primalyValue : string ] : TRecord |
| 631 |
read GetRecordByString; |
| 632 |
end; |
| 633 |
|
| 634 |
//================================================== |
| 635 |
implementation |
| 636 |
//================================================== |
| 637 |
|
| 638 |
uses |
| 639 |
Math; |
| 640 |
|
| 641 |
const |
| 642 |
MINIMUM_PAGE_SIZE = $10000; //!< ??絨?????若?吾?泣?ゃ? ( 64KB ) |
| 643 |
SECTOR_SIZE = $40; //!< ?祉???帥?泣?ゃ? ( 64Byte ) |
| 644 |
SIGNATURE_LITTLE_ENDIAN |
| 645 |
= $676b6462; //!< 'bdkg' ???若?帥???若?鴻?激?違??????/span> |
| 646 |
DATABASE_VERSION = $01000000; //!< ???若?吾?с?潟???潟??? ( 0.0d1 ) |
| 647 |
|
| 648 |
NULL_SECTION = $00000000; //!< ??戎???祉???激?с??/span> |
| 649 |
INFOMATION_SECTION = $6f666e69; //!< 'info' ?ゃ?潟?????＜?若?激?с?潟?祉???激?с??/span> |
| 650 |
COLUMN_LIST_SECTION = $736c6f63; //!< 'cols' ?????????鴻???祉???激?с??/span> |
| 651 |
ALLOCATION_TABLE_SECTION |
| 652 |
= $626c7461; //!< 'atlb' ?≪???宴?若?激?с?潟???若?????祉???激?с??/span> |
| 653 |
INDEX_SECTION = $78656469; //!< 'idex' ?ゃ?潟???????鴻?祉???激?с??/span> |
| 654 |
SECTOR_SECTION = $74636573; //!< 'sect' ?祉???帥?祉???激?с??/span> |
| 655 |
NULL_SECTOR_NO = $ffffffff; //!< 腟?腴???茵????祉???睡???/span> |
| 656 |
|
| 657 |
TYPE_BOOL = $6c6f6f62; //!< 'bool' 茫?????/span> |
| 658 |
TYPE_INT8 = $31306973; //!< 'si01' signed int 1 byte |
| 659 |
TYPE_INT16 = $32306973; //!< 'si02' |
| 660 |
TYPE_INT32 = $34306973; //!< 'si04' |
| 661 |
TYPE_INT64 = $38306973; //!< 'si08' |
| 662 |
TYPE_UINT8 = $31306975; //!< 'ui01' unsigned int 1 byte |
| 663 |
TYPE_UINT16 = $32306975; //!< 'ui02' |
| 664 |
TYPE_UINT32 = $34306975; //!< 'ui04' |
| 665 |
TYPE_UINT64 = $38306975; //!< 'ui08' |
| 666 |
TYPE_FLOAT32 = $34306c66; //!< 'fp04' floating point 4 byte |
| 667 |
TYPE_FLOAT64 = $38306c66; //!< 'fp08' |
| 668 |
TYPE_PSTR = $72747370; //!< 'pstr' pascal string |
| 669 |
TYPE_DATA = $61746164; //!< 'data' data (long string) |
| 670 |
|
| 671 |
COLUMN_DELETED = '_.-*+/DELETED+*./_-'; //!< ???ゃ?????????????? |
| 672 |
|
| 673 |
|
| 674 |
|
| 675 |
//************************************************************ |
| 676 |
// misc |
| 677 |
//************************************************************ |
| 678 |
|
| 679 |
//============================== |
| 680 |
// SortSectionsByPtr |
| 681 |
//============================== |
| 682 |
function SortSectionsByPtr( Item1, Item2 : Pointer ) : Integer; |
| 683 |
begin |
| 684 |
|
| 685 |
Result := PChar( TSection( Item1 ).Memory ) - |
| 686 |
PChar( TSection( Item2 ).Memory ); |
| 687 |
|
| 688 |
end; |
| 689 |
|
| 690 |
//============================== |
| 691 |
// SortSectorSections |
| 692 |
//============================== |
| 693 |
function SortSectorSections( Item1, Item2 : Pointer ) : Integer; |
| 694 |
begin |
| 695 |
|
| 696 |
Result := PChar( TSector( Item1 ).FSectionNo ) - |
| 697 |
PChar( TSector( Item2 ).FSectionNo ); |
| 698 |
|
| 699 |
end; |
| 700 |
|
| 701 |
|
| 702 |
|
| 703 |
//************************************************************ |
| 704 |
// TSection class |
| 705 |
//************************************************************ |
| 706 |
|
| 707 |
//============================== |
| 708 |
// Create |
| 709 |
//============================== |
| 710 |
constructor TSection.Create( parent : TGikoDB; const address : Pointer ); |
| 711 |
begin |
| 712 |
|
| 713 |
FParent := parent; |
| 714 |
FMemory := address; |
| 715 |
|
| 716 |
end; |
| 717 |
|
| 718 |
//============================== |
| 719 |
// GetSize |
| 720 |
//============================== |
| 721 |
function TSection.GetSize : Longword; |
| 722 |
begin |
| 723 |
|
| 724 |
Result := PDword( FMemory )^; |
| 725 |
|
| 726 |
end; |
| 727 |
|
| 728 |
//============================== |
| 729 |
// SetSize |
| 730 |
//============================== |
| 731 |
procedure TSection.SetSize( newSize : Longword ); |
| 732 |
begin |
| 733 |
|
| 734 |
PDword( FMemory )^ := newSize; |
| 735 |
|
| 736 |
end; |
| 737 |
|
| 738 |
//============================== |
| 739 |
// GetType |
| 740 |
//============================== |
| 741 |
function TSection.GetType : Longword; |
| 742 |
begin |
| 743 |
|
| 744 |
Result := PDword( PChar( FMemory ) + 4 )^; |
| 745 |
|
| 746 |
end; |
| 747 |
|
| 748 |
//============================== |
| 749 |
// SetType |
| 750 |
//============================== |
| 751 |
procedure TSection.SetType( newType : Longword ); |
| 752 |
begin |
| 753 |
|
| 754 |
PDword( PChar( FMemory ) + 4 )^ := newType; |
| 755 |
|
| 756 |
end; |
| 757 |
|
| 758 |
//============================== |
| 759 |
// GetNext |
| 760 |
//============================== |
| 761 |
function TSection.GetNext : Pointer; |
| 762 |
begin |
| 763 |
|
| 764 |
Result := PChar( FMemory ) + Size; |
| 765 |
|
| 766 |
end; |
| 767 |
|
| 768 |
//============================== |
| 769 |
// GetContents |
| 770 |
//============================== |
| 771 |
function TSection.GetContents : Pointer; |
| 772 |
begin |
| 773 |
|
| 774 |
Result := PChar( FMemory ) + 8; |
| 775 |
|
| 776 |
end; |
| 777 |
|
| 778 |
|
| 779 |
|
| 780 |
//************************************************************ |
| 781 |
// TSector class |
| 782 |
//************************************************************ |
| 783 |
|
| 784 |
//============================== |
| 785 |
// Create |
| 786 |
//============================== |
| 787 |
constructor TSector.Create( parent : TGikoDB; const address : Pointer ); |
| 788 |
begin |
| 789 |
|
| 790 |
inherited; |
| 791 |
FSectionNo := PDWord( PChar( Memory ) + 8 )^; |
| 792 |
FCount := Size - Longword( 12 ) div SECTOR_SIZE; |
| 793 |
|
| 794 |
end; |
| 795 |
|
| 796 |
//============================== |
| 797 |
// GetContents |
| 798 |
//============================== |
| 799 |
function TSector.GetContents : Pointer; |
| 800 |
begin |
| 801 |
|
| 802 |
Result := PChar( FMemory ) + 12; |
| 803 |
|
| 804 |
end; |
| 805 |
|
| 806 |
//============================== |
| 807 |
// GetSector |
| 808 |
//============================== |
| 809 |
function TSector.GetSector( index : Integer ) : Pointer; |
| 810 |
begin |
| 811 |
|
| 812 |
Assert( (index > 0) and (index <= FCount) ); |
| 813 |
// 8 = sizeof(section size) + sizeof(section type) + sizeof(section no) - |
| 814 |
// 1 base * sizeof(Longword) |
| 815 |
Result := PChar( GetContents ) + Longword( index ) * SECTOR_SIZE; |
| 816 |
|
| 817 |
end; |
| 818 |
|
| 819 |
|
| 820 |
|
| 821 |
//************************************************************ |
| 822 |
// TSortIndex class |
| 823 |
//************************************************************ |
| 824 |
|
| 825 |
//============================== |
| 826 |
// Create |
| 827 |
//============================== |
| 828 |
constructor TSortIndex.Create( parent : TGikoDB; const address : Pointer ); |
| 829 |
begin |
| 830 |
|
| 831 |
inherited; |
| 832 |
FColumnIndex := PWORD( PChar( Memory ) + 4 )^; |
| 833 |
FColumnProperty := PWORD( PChar( Memory ) + 6 )^; |
| 834 |
|
| 835 |
end; |
| 836 |
|
| 837 |
//============================== |
| 838 |
// GetContents |
| 839 |
//============================== |
| 840 |
function TSortIndex.GetContents : Pointer; |
| 841 |
begin |
| 842 |
|
| 843 |
Result := PChar( FMemory ) + 12; |
| 844 |
|
| 845 |
end; |
| 846 |
|
| 847 |
//============================== |
| 848 |
// GetCount |
| 849 |
//============================== |
| 850 |
function TSortIndex.GetCount : Integer; |
| 851 |
begin |
| 852 |
|
| 853 |
Result := FParent.FInfomation.RecordCount; |
| 854 |
|
| 855 |
end; |
| 856 |
|
| 857 |
//============================== |
| 858 |
// GetItem |
| 859 |
//============================== |
| 860 |
function TSortIndex.GetItem( index : Integer ) : PSortIndex; |
| 861 |
begin |
| 862 |
|
| 863 |
Result := PSortIndex( PChar( GetContents ) + index * SizeOf( RSortIndex ) ); |
| 864 |
|
| 865 |
end; |
| 866 |
|
| 867 |
|
| 868 |
|
| 869 |
//************************************************************ |
| 870 |
// TAllocationTable class |
| 871 |
//************************************************************ |
| 872 |
|
| 873 |
//============================== |
| 874 |
// Create |
| 875 |
//============================== |
| 876 |
constructor TAllocationTable.Create( parent : TGikoDB; const address : Pointer ); |
| 877 |
begin |
| 878 |
|
| 879 |
inherited; |
| 880 |
|
| 881 |
end; |
| 882 |
|
| 883 |
function TAllocationTable.GetTable( index : Integer ) : Longword; |
| 884 |
begin |
| 885 |
|
| 886 |
Result := PDword( PChar( GetContents ) + index * SizeOf( DWORD ) )^ |
| 887 |
|
| 888 |
end; |
| 889 |
|
| 890 |
|
| 891 |
|
| 892 |
//************************************************************ |
| 893 |
// TColumn class |
| 894 |
//************************************************************ |
| 895 |
|
| 896 |
//============================== |
| 897 |
// Create |
| 898 |
//============================== |
| 899 |
constructor TColumn.Create( colIndex : Word; colType : Longword ); |
| 900 |
begin |
| 901 |
|
| 902 |
FIndex := colIndex; |
| 903 |
FType := colType; |
| 904 |
|
| 905 |
end; |
| 906 |
|
| 907 |
|
| 908 |
|
| 909 |
//************************************************************ |
| 910 |
// TColumnList class |
| 911 |
//************************************************************ |
| 912 |
|
| 913 |
//============================== |
| 914 |
// Create |
| 915 |
//============================== |
| 916 |
constructor TColumnList.Create( parent : TGikoDB; const address : Pointer ); |
| 917 |
var |
| 918 |
i, j : Word; |
| 919 |
p, p2, tail : PChar; |
| 920 |
l : Integer; |
| 921 |
columnCount : Longword; |
| 922 |
col : TColumn; |
| 923 |
colType : Longword; |
| 924 |
colName : string; |
| 925 |
begin |
| 926 |
|
| 927 |
inherited; |
| 928 |
FList := THashedStringList.Create; |
| 929 |
FList.Sorted := True; |
| 930 |
FList.Duplicates := dupError; |
| 931 |
columnCount := GetColumnCount; |
| 932 |
p := PChar( GetContents ); |
| 933 |
tail := Next; |
| 934 |
|
| 935 |
j := Random( MaxInt ); |
| 936 |
for i := 0 to columnCount - 1 do begin |
| 937 |
p2 := p; // Break ??? FColumnEnd ??襲?帥???????????? |
| 938 |
|
| 939 |
if p2 >= tail then Break; |
| 940 |
l := PByte( p2 )^; Inc( p2 ); |
| 941 |
if p2 + l + SizeOf( Dword ) >= tail then Break; |
| 942 |
colName := Copy( p2, 0, l ); p2 := p2 + l; |
| 943 |
colType := PDword( p2 )^; p2 := p2 + SizeOf( colType ); |
| 944 |
|
| 945 |
p := p2; |
| 946 |
|
| 947 |
if l = 0 then begin |
| 948 |
// ???ゃ?????????????????????ч???????茲?????????????篁????? |
| 949 |
while true do begin |
| 950 |
Inc( j ); |
| 951 |
colName := COLUMN_DELETED + IntToStr( j ); |
| 952 |
if FList.IndexOf( colName ) < 0 then |
| 953 |
Break; |
| 954 |
end; |
| 955 |
end; |
| 956 |
col := TColumn.Create( i, colType ); |
| 957 |
FList.AddObject( colName, col ); |
| 958 |
end; |
| 959 |
|
| 960 |
FColumnEnd := p; |
| 961 |
|
| 962 |
end; |
| 963 |
|
| 964 |
//============================== |
| 965 |
// Destroy |
| 966 |
//============================== |
| 967 |
destructor TColumnList.Destroy; |
| 968 |
var |
| 969 |
i : Integer; |
| 970 |
begin |
| 971 |
|
| 972 |
for i := FList.Count - 1 downto 0 do |
| 973 |
FList.Objects[ i ].Free; |
| 974 |
FList.Free; |
| 975 |
|
| 976 |
end; |
| 977 |
|
| 978 |
//============================== |
| 979 |
// GetContents |
| 980 |
//============================== |
| 981 |
function TColumnList.GetContents : Pointer; |
| 982 |
begin |
| 983 |
|
| 984 |
Result := PChar( FMemory ) + 12; |
| 985 |
|
| 986 |
end; |
| 987 |
|
| 988 |
//============================== |
| 989 |
// GetColumnCount |
| 990 |
//============================== |
| 991 |
function TColumnList.GetColumnCount : Longword; |
| 992 |
begin |
| 993 |
|
| 994 |
Result := PDword( PChar( Memory ) + 8 )^; |
| 995 |
|
| 996 |
end; |
| 997 |
|
| 998 |
//============================== |
| 999 |
// SetColumnCount |
| 1000 |
//============================== |
| 1001 |
procedure TColumnList.SetColumnCount( n : Longword ); |
| 1002 |
begin |
| 1003 |
|
| 1004 |
PDword( PChar( Memory ) + 8 )^ := n; |
| 1005 |
|
| 1006 |
end; |
| 1007 |
|
| 1008 |
//============================== |
| 1009 |
// GetItemFromIndex |
| 1010 |
//============================== |
| 1011 |
function TColumnList.GetItemFromIndex( index : Integer ) : TColumn; |
| 1012 |
begin |
| 1013 |
|
| 1014 |
Result := TColumn( FList.Objects[ index ] ); |
| 1015 |
|
| 1016 |
end; |
| 1017 |
|
| 1018 |
//============================== |
| 1019 |
// GetItemFromColumnIndex |
| 1020 |
//============================== |
| 1021 |
function TColumnList.GetItemFromColumnIndex( index : Integer ) : TColumn; |
| 1022 |
var |
| 1023 |
i : Integer; |
| 1024 |
col : TColumn; |
| 1025 |
begin |
| 1026 |
|
| 1027 |
Result := nil; |
| 1028 |
for i := 0 to FList.Count - 1 do begin |
| 1029 |
col := Objects[ i ]; |
| 1030 |
if col.ColumnIndex = index then begin |
| 1031 |
Result := col; |
| 1032 |
Break; |
| 1033 |
end; |
| 1034 |
end; |
| 1035 |
|
| 1036 |
end; |
| 1037 |
|
| 1038 |
//============================== |
| 1039 |
// GetItemFromName |
| 1040 |
//============================== |
| 1041 |
function TColumnList.GetItemFromName( const columnName : string ) : TColumn; |
| 1042 |
var |
| 1043 |
i : Integer; |
| 1044 |
begin |
| 1045 |
|
| 1046 |
i := FList.IndexOf( columnName ); |
| 1047 |
if i >= 0 then |
| 1048 |
Result := Objects[ i ] |
| 1049 |
else |
| 1050 |
Result := nil; |
| 1051 |
|
| 1052 |
end; |
| 1053 |
|
| 1054 |
//============================== |
| 1055 |
// Delete |
| 1056 |
//============================== |
| 1057 |
procedure TColumnList.Delete( const columnName : string ); |
| 1058 |
var |
| 1059 |
i, j : Integer; |
| 1060 |
s : string; |
| 1061 |
begin |
| 1062 |
|
| 1063 |
i := FList.IndexOf( columnName ); |
| 1064 |
if i >= 0 then begin |
| 1065 |
j := Random( MaxInt ); |
| 1066 |
while true do begin |
| 1067 |
Inc( j ); |
| 1068 |
s := COLUMN_DELETED + IntToStr( j ); |
| 1069 |
if FList.IndexOf( s ) < 0 then begin |
| 1070 |
FList[ i ] := s; |
| 1071 |
Break; |
| 1072 |
end; |
| 1073 |
end; |
| 1074 |
|
| 1075 |
WriteBack; |
| 1076 |
end; |
| 1077 |
|
| 1078 |
end; |
| 1079 |
|
| 1080 |
//============================== |
| 1081 |
// Add |
| 1082 |
//============================== |
| 1083 |
procedure TColumnList.Add( const columnName : string; columnType : Longword ); |
| 1084 |
var |
| 1085 |
i, l : Integer; |
| 1086 |
col : TColumn; |
| 1087 |
p : PChar; |
| 1088 |
begin |
| 1089 |
|
| 1090 |
i := FList.IndexOf( columnName ); |
| 1091 |
if i >= 0 then begin |
| 1092 |
col := TColumn.Create( FList.Count, columnType ); |
| 1093 |
FList.AddObject( columnName, col ); |
| 1094 |
p := FColumnEnd; |
| 1095 |
l := Length( columnName ); |
| 1096 |
Assert( l <= 255 ); |
| 1097 |
if 255 < l then |
| 1098 |
Exit; |
| 1099 |
if p + l + 5 <= Next then begin |
| 1100 |
// ?祉???激?с?潟??????????????ц申荐????? |
| 1101 |
PByte( p )^ := l; Inc( p ); |
| 1102 |
Move( PChar( columnName )^, p^, l ); p := p + l; |
| 1103 |
PDword( p )^ := columnType; p := p + SizeOf( columnType ); |
| 1104 |
|
| 1105 |
FColumnEnd := p; |
| 1106 |
SetColumnCount( FList.Count ); |
| 1107 |
end else begin |
| 1108 |
// ?祉???激?с?潟???ャ????????????? WriteBack ??算???? |
| 1109 |
WriteBack; |
| 1110 |
end; |
| 1111 |
end; |
| 1112 |
|
| 1113 |
end; |
| 1114 |
|
| 1115 |
//============================== |
| 1116 |
// WriteBack |
| 1117 |
//============================== |
| 1118 |
procedure TColumnList.WriteBack; |
| 1119 |
var |
| 1120 |
p, tail : PChar; |
| 1121 |
i, j : Integer; |
| 1122 |
idx, l : Integer; |
| 1123 |
col : TColumn; |
| 1124 |
begin |
| 1125 |
|
| 1126 |
// 綽?荀????祉???激?с?潟?泣?ゃ?冴??荐?膊????? |
| 1127 |
p := PChar( GetContents ); |
| 1128 |
for i := 0 to FList.Count - 1 do begin |
| 1129 |
p := p + 5; |
| 1130 |
if AnsiPos( COLUMN_DELETED, FList[ i ] ) <> 1 then |
| 1131 |
p := p + Length( FList[ i ] ); |
| 1132 |
end; |
| 1133 |
|
| 1134 |
if p > Next then |
| 1135 |
// ?祉???激?с?潟?泣?ゃ?冴??莇潟?????????ф?≦宍 |
| 1136 |
FParent.ReallocateSection( Self, p - Memory ); |
| 1137 |
|
| 1138 |
p := PChar( GetContents ); |
| 1139 |
for i := 0 to FList.Count - 1 do begin |
| 1140 |
// FList ???????????с?純?若????????????????/span> |
| 1141 |
// ColumnIndex ?т研?鴻???????膣≪????????????????? |
| 1142 |
idx := -1; |
| 1143 |
col := nil; |
| 1144 |
for j := 0 to FList.Count - 1 do begin |
| 1145 |
col := TColumn( FList.Objects[ j ] ); |
| 1146 |
if col.ColumnIndex = i then begin |
| 1147 |
idx := j; |
| 1148 |
Break; |
| 1149 |
end; |
| 1150 |
end; |
| 1151 |
Assert( idx <> -1 ); |
| 1152 |
|
| 1153 |
if AnsiPos( COLUMN_DELETED, FList[ idx ] ) = 1 then |
| 1154 |
l := 0 |
| 1155 |
else |
| 1156 |
l := Length( FList[ idx ] ); |
| 1157 |
PByte( p )^ := l; Inc( p ); |
| 1158 |
Move( PChar( FList[ idx ] )^, p^, l ); p := p + l; |
| 1159 |
PDWord( p )^ := col.ColumnType; p := p + SizeOf( DWORD ); |
| 1160 |
Assert( p <= Next ); |
| 1161 |
end; |
| 1162 |
|
| 1163 |
FColumnEnd := p; |
| 1164 |
SetColumnCount( FList.Count ); |
| 1165 |
|
| 1166 |
FParent.Changed; |
| 1167 |
|
| 1168 |
end; |
| 1169 |
|
| 1170 |
|
| 1171 |
|
| 1172 |
//************************************************************ |
| 1173 |
// TInfomation class |
| 1174 |
//************************************************************ |
| 1175 |
|
| 1176 |
//============================== |
| 1177 |
// Create |
| 1178 |
//============================== |
| 1179 |
constructor TInfomation.Create( parent : TGikoDB; const address : Pointer ); |
| 1180 |
begin |
| 1181 |
|
| 1182 |
inherited; |
| 1183 |
|
| 1184 |
end; |
| 1185 |
|
| 1186 |
//============================== |
| 1187 |
// GetSectorSize |
| 1188 |
//============================== |
| 1189 |
function TInfomation.GetSectorSize : Longword; |
| 1190 |
begin |
| 1191 |
|
| 1192 |
Result := PDword( PChar( GetContents ) )^; |
| 1193 |
|
| 1194 |
end; |
| 1195 |
|
| 1196 |
//============================== |
| 1197 |
// GetRecordCount |
| 1198 |
//============================== |
| 1199 |
function TInfomation.GetRecordCount : Longword; |
| 1200 |
begin |
| 1201 |
|
| 1202 |
Result := PDword( PChar( GetContents ) + 4 )^; |
| 1203 |
end; |
| 1204 |
|
| 1205 |
|
| 1206 |
|
| 1207 |
//************************************************************ |
| 1208 |
// TRecord class |
| 1209 |
//************************************************************ |
| 1210 |
|
| 1211 |
//============================== |
| 1212 |
// Create |
| 1213 |
//============================== |
| 1214 |
constructor TRecord.Create( parent : TGikoDB; sectorNo : Longword ); |
| 1215 |
begin |
| 1216 |
|
| 1217 |
inherited Create; |
| 1218 |
FParent := parent; |
| 1219 |
FSectorNo := sectorNo; |
| 1220 |
|
| 1221 |
end; |
| 1222 |
|
| 1223 |
//============================== |
| 1224 |
// GetStringByName |
| 1225 |
//============================== |
| 1226 |
function TRecord.GetStringByName( const columnName : string ) : string; |
| 1227 |
begin |
| 1228 |
//!!!!! 篏???筝 !!!!! |
| 1229 |
end; |
| 1230 |
|
| 1231 |
//============================== |
| 1232 |
// SetStringByName |
| 1233 |
//============================== |
| 1234 |
procedure TRecord.SetStringByName( |
| 1235 |
const columnName : string; |
| 1236 |
const value : string ); |
| 1237 |
begin |
| 1238 |
//!!!!! 篏???筝 !!!!! |
| 1239 |
end; |
| 1240 |
|
| 1241 |
//============================== |
| 1242 |
// GetStringByIndex |
| 1243 |
//============================== |
| 1244 |
function TRecord.GetStringByIndex( index : Longword ) : string; |
| 1245 |
begin |
| 1246 |
//!!!!! 篏???筝 !!!!! |
| 1247 |
end; |
| 1248 |
|
| 1249 |
//============================== |
| 1250 |
// GetIntegerByName |
| 1251 |
//============================== |
| 1252 |
function TRecord.GetIntegerByName( const columnName : string ) : Integer; |
| 1253 |
begin |
| 1254 |
//!!!!! 篏???筝 !!!!! |
| 1255 |
end; |
| 1256 |
|
| 1257 |
//============================== |
| 1258 |
// SetIntegerByName |
| 1259 |
//============================== |
| 1260 |
procedure TRecord.SetIntegerByName( |
| 1261 |
const columnName : string; |
| 1262 |
const value : Integer ); |
| 1263 |
var |
| 1264 |
col, c : TColumn; |
| 1265 |
sectorNo : Integer; |
| 1266 |
offset : Longword; |
| 1267 |
i : Integer; |
| 1268 |
begin |
| 1269 |
|
| 1270 |
col := FParent.FColumnList[ columnName ]; |
| 1271 |
if col = nil then |
| 1272 |
Exit; |
| 1273 |
sectorNo := FSectorNo; |
| 1274 |
offset := 0; |
| 1275 |
|
| 1276 |
for i := 0 to col.ColumnIndex - 1 do begin |
| 1277 |
c := FParent.FColumnList.GetItemFromColumnIndex( i ); |
| 1278 |
case c.ColumnType of |
| 1279 |
TYPE_BOOL, TYPE_INT8, TYPE_UINT8: Inc( offset ); |
| 1280 |
TYPE_INT16, TYPE_UINT16: offset := offset + 2; |
| 1281 |
TYPE_INT32, TYPE_UINT32, TYPE_FLOAT32: offset := offset + 4; |
| 1282 |
TYPE_INT64, TYPE_UINT64, TYPE_FLOAT64: offset := offset + 8; |
| 1283 |
|
| 1284 |
TYPE_PSTR: |
| 1285 |
begin |
| 1286 |
//!!!!! 篏???筝 !!!!! |
| 1287 |
offset := PByte( PChar( FParent.GetSector( sectorNo ) ) + offset )^; |
| 1288 |
while offset >= FParent.FSectorSize do begin |
| 1289 |
sectorNo := FParent.FAllocationTable[ sectorNo ]; |
| 1290 |
if sectorNo = NULL_SECTOR_NO then |
| 1291 |
Exit; |
| 1292 |
offset := offset - FParent.FSectorSize; |
| 1293 |
end; |
| 1294 |
end; |
| 1295 |
|
| 1296 |
TYPE_DATA: |
| 1297 |
begin |
| 1298 |
//!!!!! 篏???筝 !!!!! |
| 1299 |
end; |
| 1300 |
end; |
| 1301 |
end; |
| 1302 |
|
| 1303 |
//!!!!! 篏???筝 !!!!! |
| 1304 |
|
| 1305 |
end; |
| 1306 |
|
| 1307 |
//============================== |
| 1308 |
// GetIntegerByIndex |
| 1309 |
//============================== |
| 1310 |
function TRecord.GetIntegerByIndex( index : Longword ) : Integer; |
| 1311 |
begin |
| 1312 |
//!!!!! 篏???筝 !!!!! |
| 1313 |
end; |
| 1314 |
|
| 1315 |
|
| 1316 |
|
| 1317 |
//************************************************************ |
| 1318 |
// TGikoDB class |
| 1319 |
//************************************************************ |
| 1320 |
|
| 1321 |
//============================== |
| 1322 |
// Create |
| 1323 |
//============================== |
| 1324 |
constructor TGikoDB.Create( |
| 1325 |
const filePath : string; |
| 1326 |
mode : Longword = fmOpenRead ); |
| 1327 |
var |
| 1328 |
info : _SYSTEM_INFO; |
| 1329 |
maximumSize : Integer; |
| 1330 |
begin |
| 1331 |
|
| 1332 |
Randomize; |
| 1333 |
FFilePath := ExpandUNCFileName( filePath ); |
| 1334 |
FChanged := False; |
| 1335 |
|
| 1336 |
GetSystemInfo( info ); |
| 1337 |
FPageSize := Max( info.dwPageSize, MINIMUM_PAGE_SIZE ); |
| 1338 |
if FileExists( filePath ) then begin |
| 1339 |
maximumSize := 0; |
| 1340 |
FFile := TMappedFile.Create( FFilePath, mode, maximumSize ); |
| 1341 |
ReadSections; |
| 1342 |
end else begin |
| 1343 |
maximumSize := FPageSize; |
| 1344 |
FFile := TMappedFile.Create( FFilePath, mode, maximumSize ); |
| 1345 |
CreateInitialSections; |
| 1346 |
ReadSections; |
| 1347 |
end; |
| 1348 |
|
| 1349 |
end; |
| 1350 |
|
| 1351 |
//============================== |
| 1352 |
// Destroy |
| 1353 |
//============================== |
| 1354 |
destructor TGikoDB.Destroy; |
| 1355 |
var |
| 1356 |
i : Integer; |
| 1357 |
begin |
| 1358 |
|
| 1359 |
FFile.Free; |
| 1360 |
for i := FSections.Count - 1 downto 0 do |
| 1361 |
TObject( FSections[ i ] ).Free; |
| 1362 |
FSections.Free; |
| 1363 |
|
| 1364 |
end; |
| 1365 |
|
| 1366 |
//============================== |
| 1367 |
// CreateInitialSections |
| 1368 |
//============================== |
| 1369 |
procedure TGikoDB.CreateInitialSections; |
| 1370 |
var |
| 1371 |
i : Integer; |
| 1372 |
p, p2 : PChar; |
| 1373 |
emptySize : Longword; |
| 1374 |
sectionCount : Longword; |
| 1375 |
begin |
| 1376 |
|
| 1377 |
FSections := TList.Create; |
| 1378 |
p := PChar( FFile.Memory ); |
| 1379 |
|
| 1380 |
//===== ?????? |
| 1381 |
// ?激?違??????/span> |
| 1382 |
PDword( p )^ := SIGNATURE_LITTLE_ENDIAN; p := p + SizeOf( DWORD ); |
| 1383 |
// ???若?吾?с??/span> |
| 1384 |
PDword( p )^ := DATABASE_VERSION; p := p + SizeOf( DWORD ); |
| 1385 |
|
| 1386 |
//===== ?ゃ?潟?????＜?若?激?с?潟?祉???激?с??/span> |
| 1387 |
p2 := p; |
| 1388 |
// ?祉???激?с?潟?泣?ゃ??/span> |
| 1389 |
PDword( p2 )^ := 16; p2 := p2 + SizeOf( DWORD ); |
| 1390 |
// ?祉???激?с?潟?帥?ゃ?? |
| 1391 |
PDword( p2 )^ := INFOMATION_SECTION; p2 := p2 + SizeOf( DWORD ); |
| 1392 |
// ?祉???帥?泣?ゃ??/span> |
| 1393 |
PDword( p2 )^ := SECTOR_SIZE; p2 := p2 + SizeOf( DWORD ); |
| 1394 |
// ???潟?若????/span> |
| 1395 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1396 |
p := p + PDword( p )^; |
| 1397 |
|
| 1398 |
//===== ?????????鴻???祉???激?с??/span> |
| 1399 |
// 1 ?祉???帥? SECTOR_SIZE / SizeOf( DWORD ) ?????????????ャ?????????? |
| 1400 |
// 1 ??????? 12 byte(11 ??絖?) + 4 byte ???若?帥?帥?ゃ?? = 16 byte 羔?莢祉??????皿絎? |
| 1401 |
p2 := p; |
| 1402 |
// ?祉???激?с?潟?泣?ゃ??/span> |
| 1403 |
PDword( p2 )^ := 8 + (SECTOR_SIZE div SizeOf( DWORD )) * 16; |
| 1404 |
p2 := p2 + SizeOf( DWORD ); |
| 1405 |
// ?祉???激?с?潟?帥?ゃ?? |
| 1406 |
PDword( p2 )^ := COLUMN_LIST_SECTION; p2 := p2 + SizeOf( DWORD ); |
| 1407 |
// ????????/span> |
| 1408 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1409 |
p := p + PDword( p )^; |
| 1410 |
|
| 1411 |
//===== ?≪???宴?若?激?с?潟???若?????祉???激?с??/span> |
| 1412 |
// - 8 = allocation table section |
| 1413 |
// -12 = index section + column no + property |
| 1414 |
// -12 = sector section + section no |
| 1415 |
p2 := p; |
| 1416 |
emptySize := p2 - PChar( FFile.Memory ) - 8 - 12 - 12; |
| 1417 |
// emptySize = sectionCount * |
| 1418 |
// (SECTOR_SIZE + allocation table + table no + value) |
| 1419 |
// sectionCount = emptySize / (SECTOR_SIZE + 12) |
| 1420 |
sectionCount := emptySize div (SECTOR_SIZE + 12); |
| 1421 |
// ?祉???激?с?潟?泣?ゃ??/span> |
| 1422 |
PDword( p2 )^ := 8 + sectionCount * SizeOf( DWORD ); |
| 1423 |
p2 := p2 + SizeOf( DWORD ); |
| 1424 |
// ?祉???激?с?潟?帥?ゃ?? |
| 1425 |
PDword( p2 )^ := ALLOCATION_TABLE_SECTION; |
| 1426 |
p2 := p2 + SizeOf( DWORD ); |
| 1427 |
// ???若????/span> |
| 1428 |
for i := 1 to sectionCount do begin |
| 1429 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1430 |
end; |
| 1431 |
p := p + PDword( p )^; |
| 1432 |
|
| 1433 |
//===== ?ゃ?潟???????鴻?祉???激?с??/span> |
| 1434 |
p2 := p; |
| 1435 |
// ?祉???激?с?潟?泣?ゃ??/span> |
| 1436 |
PDword( p2 )^ := 12 + sectionCount * SizeOf( DWORD ) * 2; |
| 1437 |
p2 := p2 + SizeOf( DWORD ); |
| 1438 |
// ?祉???激?с?潟?帥?ゃ?? |
| 1439 |
PDword( p2 )^ := INDEX_SECTION; p2 := p2 + SizeOf( DWORD ); |
| 1440 |
// ???????? ( 2 byte ) + ????????? ( 2 byte ) |
| 1441 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1442 |
// ???若?????? + ??/span> |
| 1443 |
for i := 1 to sectionCount * 2 do begin |
| 1444 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1445 |
end; |
| 1446 |
p := p + PDword( p )^; |
| 1447 |
|
| 1448 |
//===== ?祉???帥?祉???激?с??/span> |
| 1449 |
p2 := p; |
| 1450 |
// ?祉???激?с?潟?泣?ゃ??/span> |
| 1451 |
PDword( p2 )^ := 8 + sectionCount * SECTOR_SIZE; |
| 1452 |
p2 := p2 + SizeOf( DWORD ); |
| 1453 |
// ?祉???激?с?潟?帥?ゃ?? |
| 1454 |
PDword( p2 )^ := SECTOR_SECTION; p2 := p2 + SizeOf( DWORD ); |
| 1455 |
// ?祉???激?с?括???/span> |
| 1456 |
PDword( p2 )^ := 0; p2 := p2 + SizeOf( DWORD ); |
| 1457 |
p := p + PDword( p )^; |
| 1458 |
|
| 1459 |
if p + 8 <= PChar( FFile.Memory ) + FFile.Size then begin |
| 1460 |
// 腟?腴????/span> |
| 1461 |
PDWord( p )^ := 0; |
| 1462 |
PDWord( p + 4 )^ := NULL_SECTION; |
| 1463 |
end; |
| 1464 |
|
| 1465 |
end; |
| 1466 |
|
| 1467 |
//============================== |
| 1468 |
// ReadSections |
| 1469 |
//============================== |
| 1470 |
procedure TGikoDB.ReadSections; |
| 1471 |
var |
| 1472 |
p : PChar; |
| 1473 |
dbVersion : Longword; |
| 1474 |
begin |
| 1475 |
|
| 1476 |
FSections := TList.Create; |
| 1477 |
p := FFile.Memory; |
| 1478 |
// ?激?違?????ｃ?????с??? (?上?????????????潟???ｃ?≪?潟???? |
| 1479 |
if PDword( p )^ <> SIGNATURE_LITTLE_ENDIAN then |
| 1480 |
raise EGikoDBUnssuportedFormatError.Create( |
| 1481 |
'???若?帥???若?鴻???????若????????筝????с????' ); |
| 1482 |
p := p + SizeOf( DWORD ); |
| 1483 |
|
| 1484 |
dbVersion := PDword( p )^; p := p + SizeOf( DWORD ); |
| 1485 |
case dbVersion of |
| 1486 |
DATABASE_VERSION: |
| 1487 |
ReadSection0_0d1( p ); |
| 1488 |
else |
| 1489 |
raise EGikoDBUnssuportedFormatError.Create( |
| 1490 |
'?泣???若???????????????????若???????с????' ); |
| 1491 |
end; |
| 1492 |
|
| 1493 |
end; |
| 1494 |
|
| 1495 |
//============================== |
| 1496 |
// ReadSection0_0d1 |
| 1497 |
//============================== |
| 1498 |
procedure TGikoDB.ReadSection0_0d1( const address : PChar ); |
| 1499 |
var |
| 1500 |
p, tail : PChar; |
| 1501 |
sectionSize : Longword; |
| 1502 |
sectionType : Longword; |
| 1503 |
section : TSection; |
| 1504 |
begin |
| 1505 |
|
| 1506 |
p := address; |
| 1507 |
tail := PChar( FFile.Memory ) + FFile.Size - 8; |
| 1508 |
while p < tail do begin |
| 1509 |
sectionSize := PDword( p )^; |
| 1510 |
sectionType := PDword( p + 4 )^; |
| 1511 |
if sectionSize = 0 then |
| 1512 |
Break; |
| 1513 |
|
| 1514 |
case sectionType of |
| 1515 |
NULL_SECTION: |
| 1516 |
FSections.Add( TSection.Create( Self, p ) ); |
| 1517 |
|
| 1518 |
INFOMATION_SECTION: |
| 1519 |
begin |
| 1520 |
FInfomation := TInfomation.Create( Self, p ); |
| 1521 |
FSections.Add( FInfomation ); |
| 1522 |
end; |
| 1523 |
|
| 1524 |
COLUMN_LIST_SECTION: |
| 1525 |
begin |
| 1526 |
FColumnList := TColumnList.Create( Self, p ); |
| 1527 |
FSections.Add( FColumnList ); |
| 1528 |
end; |
| 1529 |
|
| 1530 |
ALLOCATION_TABLE_SECTION: |
| 1531 |
begin |
| 1532 |
FAllocationTable := TAllocationTable.Create( Self, p ); |
| 1533 |
FSections.Add( FAllocationTable ); |
| 1534 |
end; |
| 1535 |
|
| 1536 |
INDEX_SECTION: |
| 1537 |
begin |
| 1538 |
section := TSortIndex.Create( Self, p ); |
| 1539 |
FIndexes.Add( section ); |
| 1540 |
FSections.Add( section ); |
| 1541 |
end; |
| 1542 |
|
| 1543 |
SECTOR_SECTION: |
| 1544 |
begin |
| 1545 |
section := TSector.Create( Self, p ); |
| 1546 |
FSectors.Add( section ); |
| 1547 |
FSections.Add( section ); |
| 1548 |
end; |
| 1549 |
|
| 1550 |
else |
| 1551 |
FSections.Add( TSection.Create( Self, p ) ) |
| 1552 |
end; |
| 1553 |
p := p + sectionSize; |
| 1554 |
end; |
| 1555 |
|
| 1556 |
end; |
| 1557 |
|
| 1558 |
//============================== |
| 1559 |
// CreateSection |
| 1560 |
//============================== |
| 1561 |
function TGikoDB.CreateSection( |
| 1562 |
sectionSize : Longword; |
| 1563 |
sectionType : Longword |
| 1564 |
) : Pointer; |
| 1565 |
var |
| 1566 |
i, j : Integer; |
| 1567 |
section : TSection; |
| 1568 |
emptySection : TSection; |
| 1569 |
emptySize : Longword; |
| 1570 |
emptyIndex : Integer; |
| 1571 |
fileSize : Longword; |
| 1572 |
oldBegin : PChar; |
| 1573 |
p : PChar; |
| 1574 |
begin |
| 1575 |
|
| 1576 |
// ?障????????祉???激?с?潟???≪?? |
| 1577 |
emptySection := nil; |
| 1578 |
section := nil; |
| 1579 |
emptyIndex := 0; |
| 1580 |
// ?ｇ?????腥冴???????? FSection ??兄??絖??с?? |
| 1581 |
// ?ｇ??????????????違???????????с?純?若?? |
| 1582 |
FSections.Sort( SortSectionsByPtr ); |
| 1583 |
|
| 1584 |
for i := 0 to FSections.Count - 1 do begin |
| 1585 |
section := TSection( FSections[ i ] ); |
| 1586 |
if (section.SectionType = NULL_SECTION) then begin |
| 1587 |
// emptySection ???ｇ?????腥冴?????????????????? |
| 1588 |
if emptySection = nil then begin |
| 1589 |
emptySection := section; |
| 1590 |
emptyIndex := i; |
| 1591 |
end; |
| 1592 |
|
| 1593 |
emptySize := PChar( section.Memory ) + section.Size - |
| 1594 |
PChar( emptySection.Memory ); |
| 1595 |
if sectionSize <= emptySize then begin |
| 1596 |
// 腥冴???祉???激?с?括?肴? |
| 1597 |
Result := emptySection.Memory; |
| 1598 |
PDword( Result )^ := emptySize; |
| 1599 |
PDword( PChar( Result ) + 4 )^ := sectionType; |
| 1600 |
// 腥冴???祉???激?с?潟??????/span> |
| 1601 |
for j := i downto emptyIndex do begin |
| 1602 |
TSection( FSections[ j ] ).Free; |
| 1603 |
FSections.Delete( j ); |
| 1604 |
end; |
| 1605 |
Exit; // ?紫????祉???激?с?潟?????ゃ????????????? for i ???茵?筝?????/span> |
| 1606 |
end; |
| 1607 |
end else begin |
| 1608 |
emptySection := nil; |
| 1609 |
end; |
| 1610 |
end; |
| 1611 |
|
| 1612 |
// ???＜?ゃ??????鮎??????????????????? |
| 1613 |
oldBegin := FFile.Memory; |
| 1614 |
if PChar( section.Next ) + sectionSize <= oldBegin + FFile.Size then begin |
| 1615 |
// 腥冴???????肴? |
| 1616 |
Result := section.Next; |
| 1617 |
PDword( Result )^ := sectionSize; |
| 1618 |
PDword( PChar( Result ) + 4 )^ := sectionType; |
| 1619 |
Exit; |
| 1620 |
end; |
| 1621 |
|
| 1622 |
// sectionSize ??羣??????????????????с???＜?ゃ?????≦宍 |
| 1623 |
FChanged := True; |
| 1624 |
|
| 1625 |
// ?≦宍?????泣?ゃ?冴???膊? |
| 1626 |
fileSize := (sectionSize div FPageSize + 1) * FPageSize; |
| 1627 |
|
| 1628 |
// ?≦宍???????＜?ゃ?????????????? |
| 1629 |
FFile.Free; |
| 1630 |
FFile := TMappedFile.Create( FFilePath, fmOpenReadWrite, fileSize ); |
| 1631 |
|
| 1632 |
// ??鮎??申?? |
| 1633 |
Result := PChar( FFile.Memory ) + (PChar( section.Next ) - oldBegin); |
| 1634 |
PDword( Result )^ := sectionSize; |
| 1635 |
PDword( PChar( Result ) + 4 )^ := sectionType; |
| 1636 |
|
| 1637 |
p := PChar( Result ) + sectionSize; |
| 1638 |
if p + 8 <= PChar( FFile.Memory ) + FFile.Size then begin |
| 1639 |
// 腟?腴????/span> |
| 1640 |
PDword( p )^ := 0; p := p + SizeOf( DWORD ); |
| 1641 |
PDword( p )^ := NULL_SECTION; |
| 1642 |
end; |
| 1643 |
|
| 1644 |
end; |
| 1645 |
|
| 1646 |
//============================== |
| 1647 |
// ReallocateSection |
| 1648 |
//============================== |
| 1649 |
procedure TGikoDB.ReallocateSection( |
| 1650 |
section : TSection; |
| 1651 |
sectionSize : Longword ); |
| 1652 |
var |
| 1653 |
nextSection : PChar; |
| 1654 |
fileEnd : PChar; |
| 1655 |
p : PChar; |
| 1656 |
size : Longword; |
| 1657 |
sectionType : Longword; |
| 1658 |
begin |
| 1659 |
|
| 1660 |
FChanged := True; |
| 1661 |
fileEnd := PChar( FFile.Memory ) + FFile.Size; |
| 1662 |
|
| 1663 |
if sectionSize <= section.Size then begin |
| 1664 |
|
| 1665 |
// 膰?? |
| 1666 |
nextSection := PChar( section.Next ); |
| 1667 |
section.SetSize( sectionSize ); |
| 1668 |
if 8 >= fileEnd - PChar( nextSection ) then |
| 1669 |
// ????????緇????祉???激?с??/span> |
| 1670 |
nextSection := fileEnd; |
| 1671 |
|
| 1672 |
if 16 >= nextSection - PChar( section.Next ) then begin |
| 1673 |
// 緇?膓?????腥冴????絨??????? section ???ｇ????? |
| 1674 |
section.SetSize( nextSection - PChar( section.Memory ) ); |
| 1675 |
end else begin |
| 1676 |
// 緇?膓?????腥冴????紊с???????х??祉???激?с?潟?????? |
| 1677 |
p := section.Next; |
| 1678 |
if PDword( nextSection )^ = 0 then |
| 1679 |
// 腥冴???祉???激?с?潟????腟??祉???激?с??/span> |
| 1680 |
PDword( p )^ := 0 |
| 1681 |
else |
| 1682 |
// ??????????腥冴???祉???激?с??/span> |
| 1683 |
PDword( p )^ := nextSection - p; |
| 1684 |
PDword( p + 4 )^ := NULL_SECTION; |
| 1685 |
end; |
| 1686 |
|
| 1687 |
end else begin |
| 1688 |
|
| 1689 |
// ?≦宍 |
| 1690 |
size := section.Size; |
| 1691 |
p := PChar( section.Next ); |
| 1692 |
|
| 1693 |
// section ??????緇????ｇ?????腥冴?????≪?? |
| 1694 |
while (8 < fileEnd - p) and (size < sectionSize) do begin |
| 1695 |
if PDword( p )^ = 0 then begin |
| 1696 |
size := size + Longword( fileEnd - p ); |
| 1697 |
Break; |
| 1698 |
end else if PDword( p + 4 )^ = 0 then begin |
| 1699 |
size := size + PDword( p )^; |
| 1700 |
p := p + PDword( p )^; |
| 1701 |
end else begin |
| 1702 |
Break; |
| 1703 |
end; |
| 1704 |
end; |
| 1705 |
|
| 1706 |
if size >= sectionSize then begin |
| 1707 |
// ?ｇ?????腥冴???祉???激?с?潟?ц????? |
| 1708 |
section.SetSize( size ); |
| 1709 |
end else begin |
| 1710 |
// ?ｇ?????腥冴???祉???激?с?潟?ц??????????ф?域?篏??? |
| 1711 |
size := section.Size; |
| 1712 |
sectionType := section.SectionType; |
| 1713 |
section.SetType( NULL_SECTION ); |
| 1714 |
|
| 1715 |
p := CreateSection( sectionSize, sectionType ); |
| 1716 |
Move( PChar( section.FMemory )^, p^, size ); |
| 1717 |
|
| 1718 |
section.FMemory := p; |
| 1719 |
end; |
| 1720 |
|
| 1721 |
end; |
| 1722 |
|
| 1723 |
end; |
| 1724 |
|
| 1725 |
//============================== |
| 1726 |
// Dump |
| 1727 |
//============================== |
| 1728 |
procedure TGikoDB.Dump( |
| 1729 |
const filePath : string ); |
| 1730 |
begin |
| 1731 |
//!!!!! 篏???筝 !!!!! |
| 1732 |
end; |
| 1733 |
|
| 1734 |
//============================== |
| 1735 |
// Changed |
| 1736 |
//============================== |
| 1737 |
procedure TGikoDB.Changed( force : Boolean = False ); |
| 1738 |
var |
| 1739 |
i : Integer; |
| 1740 |
begin |
| 1741 |
|
| 1742 |
if FChanged or force then begin |
| 1743 |
// FSections ??????/span> |
| 1744 |
for i := FSections.Count - 1 downto 0 do |
| 1745 |
TObject( FSections[ i ] ).Free; |
| 1746 |
FSections.Free; |
| 1747 |
|
| 1748 |
// FSections ????罕?膀? |
| 1749 |
ReadSections; |
| 1750 |
end; |
| 1751 |
|
| 1752 |
end; |
| 1753 |
|
| 1754 |
//============================== |
| 1755 |
// SelectValue |
| 1756 |
//============================== |
| 1757 |
function TGikoDB.SelectValue( |
| 1758 |
founds : TList; |
| 1759 |
value : Longword; |
| 1760 |
columnIndex : Word = 0 |
| 1761 |
) : Boolean; |
| 1762 |
var |
| 1763 |
foundIdx : Integer; |
| 1764 |
l, h, m : Integer; |
| 1765 |
index : TSortIndex; |
| 1766 |
begin |
| 1767 |
|
| 1768 |
Result := False; |
| 1769 |
index := nil; |
| 1770 |
foundIdx := -1; |
| 1771 |
for l := 0 to FIndexes.Count - 1 do begin |
| 1772 |
index := TSortIndex( FIndexes[ l ] ); |
| 1773 |
if index.ColumnIndex = columnIndex then |
| 1774 |
Break; |
| 1775 |
end; |
| 1776 |
if index = nil then |
| 1777 |
Exit; |
| 1778 |
|
| 1779 |
// ??膣???????∝刈 |
| 1780 |
l := 0; |
| 1781 |
h := index.Count; |
| 1782 |
m := 0; |
| 1783 |
while l < h do begin |
| 1784 |
m := (l + h) shr 1; |
| 1785 |
if index[ m ].FValue = value then begin |
| 1786 |
foundIdx := m; |
| 1787 |
founds.Add( Pointer( index[ m ].FATIndex ) ); |
| 1788 |
Break; |
| 1789 |
end else if index[ m ].FValue < value then begin |
| 1790 |
h := m; |
| 1791 |
end else begin |
| 1792 |
l := m; |
| 1793 |
end; |
| 1794 |
end; |
| 1795 |
if foundIdx < 0 then |
| 1796 |
Exit; |
| 1797 |
|
| 1798 |
for l := m - 1 downto 0 do begin |
| 1799 |
if index[ l ].FValue <> value then |
| 1800 |
Break; |
| 1801 |
founds.Add( Pointer( l ) ); |
| 1802 |
end; |
| 1803 |
for l := m + 1 downto index.Count - 1 do begin |
| 1804 |
if index[ l ].FValue <> value then |
| 1805 |
Break; |
| 1806 |
founds.Add( Pointer( index[ m ].FATIndex ) ); |
| 1807 |
end; |
| 1808 |
|
| 1809 |
Result := True; |
| 1810 |
|
| 1811 |
end; |
| 1812 |
|
| 1813 |
//============================== |
| 1814 |
// GetRecordByInteger |
| 1815 |
//============================== |
| 1816 |
function TGikoDB.GetRecordByInteger( primalyValue : Integer ) : TRecord; |
| 1817 |
var |
| 1818 |
founds : TList; |
| 1819 |
sector : Integer; |
| 1820 |
begin |
| 1821 |
|
| 1822 |
Result := nil; |
| 1823 |
founds := TList.Create; |
| 1824 |
try |
| 1825 |
if not SelectValue( founds, primalyValue ) then |
| 1826 |
Exit; |
| 1827 |
|
| 1828 |
sector := Integer( founds[ 0 ] ); |
| 1829 |
Result := TRecord.Create( Self, FAllocationTable[ sector ] ); |
| 1830 |
finally |
| 1831 |
founds.Free; |
| 1832 |
end; |
| 1833 |
|
| 1834 |
end; |
| 1835 |
|
| 1836 |
//============================== |
| 1837 |
// GetRecordByString |
| 1838 |
//============================== |
| 1839 |
function TGikoDB.GetRecordByString( const primalyValue : string ) : TRecord; |
| 1840 |
var |
| 1841 |
hash : Longword; |
| 1842 |
begin |
| 1843 |
|
| 1844 |
hash := GetStringHash( primalyValue ); |
| 1845 |
Result := GetRecordByInteger( hash ); |
| 1846 |
|
| 1847 |
end; |
| 1848 |
|
| 1849 |
//============================== |
| 1850 |
// GetSector |
| 1851 |
//============================== |
| 1852 |
function TGikoDB.GetSector( sectorNo : Integer ) : Pointer; |
| 1853 |
begin |
| 1854 |
//!!!!! 篏???筝 !!!!! |
| 1855 |
end; |
| 1856 |
|
| 1857 |
end. |
Parent Directory
Revision Log
Revision Graph