Files
TeslaRel410/BORLAND/BDE/EXAMPLES/PASCAL/BLOCK.PAS
T
CydandClaude Fable 5 63312e07f9 source410: literal 4.10 source reconstruction + BC++ 4.52 fleet toolchain archived
- BORLAND/: Borland C++ 4.52 (chosen over 4.5 by byte-match: CODE/RP/CW32.LIB
  is identical to 4.52's install lib). BCC32/TLINK32/TLIB/MAKE run natively on
  Win11; CODE/BT/OPT.MAK is the shipped BTL4OPT.EXE's exact flag recipe
  (extender = Borland PowerPack DPMI32, not Phar Lap TNT).
- restoration/source410/: the literal 1995-form reconstruction of the missing
  BT game source (never mixed into CODE/). Round 1-3 state:
  * 6 of 10 surviving original TUs COMPILE CLEAN under the period toolchain
    (BTMSSN, BTCNSL, BTSCNRL, BTTEAM, BTL4MODE, BTL4ARND) - first builds
    since 1996.
  * BT_L4/BTL4APP.CPP pilot reconstruction: 12/12 functions, Fail() lands on
    its binary-recorded line 400 exactly.
  * BT/BTCNSL.HPP: console wire IDs recovered from the binary's ctors
    (Killed=9, Damaged=10, ScoreUpdate=13, DeathWithoutHonor=15 [T1];
    TeamScore=12 flagged [T4]).
  * MUNGA/: 8 engine-header backfills back-dated from the BT412 WinTesla tree
    (VDATA numbering decomp-verified; AUDREND's OpenAL-era virtual removed -
    the period compiler is the drift detector).
  * Tooling: backdate.py (WinTesla->1995 header transform), compile410.sh
    (per-TU verification sweep under authentic OPT.MAK flags).
  * README: corrected roadmap - MECH.HPP is the capstone grown with the mech
    TU reconstructions; BTREG.CPP green = the header-family milestone.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-19 07:33:26 -05:00

271 lines
9.7 KiB
ObjectPascal

{ Block.pas }
program Block;
{$IfDef VER80}
uses SnipTool, SnipData, SysUtils, WinTypes, WinProcs,
DbiProcs, DbiTypes, DbiErrs;
{$Else}
uses WinTypes, WinCrt, Strings, DbiProcs, DbiTypes, DbiErrs,
SnipTool, SnipData;
{$EndIf}
const
szTblName = 'customer'; { Name of table to be created. }
szCopyTblName = 'custcopy';
szTblType = szPARADOX; { Table type to use. }
{=====================================================================
Code: TableCreateTempCopy();
Input: hDb - Handle to the Database
hCur - Handle to the Source table
szDestTblName - Name of the Destination table
szTblType - Type of the table
phCurTemp - Cursor returned on the temporary table
Return: DBIResult - Success of the opperation, or what went
- wrong.
Description:
This function is used to return a handle to a temporary
table which is a copy of the passed in table.
===================================================================== }
function TableCreateTempCopy (hDb: hDBIDb; hCur: hDBICur;
szDestTblName: pCHAR; szTblType: pCHAR;
var phCurTemp: hDBICur): DBIResult;
var
rslt: DBIResult; { Return value from IDAPI functions }
crTblDes: CRTblDesc; { Table descriptor }
pfldDes: pFLDDesc; { Field descriptor }
curProp: CURProps; { Cursor properties }
begin
ChkRslt(DbiGetCursorProps(hCur, curProp), DBIERR_NONE,
' Error - GetCursorProps.');
{ Allocate memory for the field descriptor }
GetMem(pfldDes, curProp.iFields * sizeof(FLDDesc));
{ Get information on the fields of the table }
ChkRslt(DbiGetFieldDescs(hCur, pfldDes), DBIERR_NONE,
' Error - GetFieldDescs.');
{ Initialize create table descriptor }
FillChar(crTblDes, sizeof(crTblDesc), #0);
StrCopy(crTblDes.szTblName, szDestTblName);
StrCopy(crTblDes.szTblType, szTblType);
crTblDes.iFldCount := curProp.iFields;
crTblDes.pfldDesc := pfldDes;
{ Create and open the table }
rslt := ChkRslt(DbiCreateTable(hDb, TRUE, crTblDes),
DBIERR_NONE, ' CreateTempTable.');
if (rslt <> DBIERR_NONE) then
begin
FreeMem(pfldDes, curProp.iFields * sizeof(FLDDesc));
TableCreateTempCopy := rslt;
exit;
end;
rslt := ChkRslt(DbiOpenTable(hDb, crTblDes.szTblName,
crTblDes.szTblType, nil,
nil, 0, dbiREADWRITE,
dbiOPENSHARED, xltFIELD, FALSE,
nil, phCurTemp),
DBIERR_NONE, ' Error - OpenTable.');
if (rslt <> DBIERR_NONE) then
begin
FreeMem(pfldDes, curProp.iFields * sizeof(FLDDesc));
TableCreateTempCopy := rslt;
exit;
end;
FreeMem(pfldDes, curProp.iFields * sizeof(FLDDesc));
TableCreateTempCopy := rslt;
end;
{=====================================================================
Code: Block();
Input: None.
Return: None.
Description:
This example shows how to read and write records to a table
in blocks (more than one record at a time). Moveing records
in blocks is the prefered method of reading and writting
records to a table because it enhances the performance of
the application.
===================================================================== }
var
rslt: DBIResult; { Return value from IDAPI functions }
hDb: hDBIDb; { Handle to the Database }
hCur: hDBICur; { Handle to the table }
hCurCopy: hDBICur; { Handle to a temporary table }
CurProp: CURProps; { Properties of the Cursor }
pRecBuf: pointer; { Pointer to the record buffer }
uRecNum: UINT16; { Loop counter - current record num }
uRecOffset: UINT16; { Offset into the block of records }
DestBuf: array[0..34] of CHAR; { New field value to write to the
table }
TempBuf: array[0..34] of CHAR; { Field value read in from the table }
bBlank: BOOL; { Used to determine if a field is blank }
const
uNumBuf: UINT32 = 10; { Number of records to buffer }
uNumRecs: UINT32 = 10; { Number of records to display, 0=all }
begin
Screen('*** Block maniplulation example ***');
Screen('');
Screen(' Initializing IDAPI...');
if (InitAndConnect(hDb) <> DBIERR_NONE) then { Terminate example if }
begin { Initialization fails }
Screen('');
Screen('*** End of Example ***');
exit;
end;
Screen(' Setting the Database directory...');
ChkRslt(DbiSetDirectory(hDb, pCHAR(szTblDirectory)), DBIERR_NONE,
' Error - SetDirectory.');
Screen(' Open the '+szTblName+' table (source)...');
if (ChkRslt(DbiOpenTable(hDb, pCHAR(szTblName), pCHAR(szTblType),
nil, nil, 0, dbiREADWRITE, dbiOPENSHARED,
xltFIELD, FALSE, nil, hCur),
DBIERR_NONE, ' Error - OpenTable.')
<> DBIERR_NONE) then
begin
Screen(' Clean up IDAPI...');
CloseDbAndexit(hDb);
Screen('');
Screen('*** End of Example ***');
exit;
end;
{ Create a temporary table with the same field structure as the
source table }
if (TableCreateTempCopy(hDb, hCur, pCHAR(szCopyTblName),
pCHAR(szTblType), hCurCopy) <> DBIERR_NONE) then
begin
ChkRslt(DbiCloseCursor(hCur), DBIERR_NONE,
' Error - CloseCursor.');
Screen(' Clean up IDAPI...');
CloseDbAndexit(hDb);
Screen('');
Screen('*** End of Example ***');
exit;
end;
{ Get the size of the record buffer }
ChkRslt(DbiGetCursorProps(hCur, CurProp), DBIERR_NONE,
' Error - GetCursorProps.');
{ Allocate space for the Record Buffer }
GetMem(pRecBuf, CurProp.iRecBufSize * sizeof(BYTE) * uNumBuf);
if not Assigned(pRecBuf) then
begin
Screen(' Error - Out of memory.');
CloseDbAndexit(hDb);
exit;
end;
Screen('');
Screen(' Go to the beginning of the '+szTblName+' table...');
ChkRslt(DbiSetToBegin(hCur), DBIERR_NONE,
' Error - SetToBegin.');
Screen(' Display the '+szTblName+' table...');
ChkRslt(DisplayTable(hCur, uNumRecs), DBIERR_NONE,
' Error - DisplayTable.');
Screen('');
Screen(' Go to the beginning of the '+szTblName+' table...');
ChkRslt(DbiSetToBegin(hCur), DBIERR_NONE,
' Error - SetToBegin.');
Screen(' Read '+IntToStr(uNumBuf)+' records from the '+
szTblName+' table...');
rslt := DbiReadBlock(hCur, uNumBuf, pRecBuf);
{ Getting an EOF error is ok - just means that an attempt was
made to read more records than are currently in the table. }
if ((rslt <> DBIERR_EOF) and (rslt <> DBIERR_NONE)) then
begin
ChkRslt(rslt, DBIERR_NONE, ' Error - ReadBlock');
end;
for uRecNum := 1 to uNumBuf do
begin
{ Calculate the record offset. }
uRecOffset := (uRecNum-1)*CurProp.iRecBufSize;
{ Get the value in the second field for each record }
ChkRslt(DbiGetField(hCur, 2,
PChar(pRecBuf)+uRecOffset,
@TempBuf, bBlank),
DBIERR_NONE, ' Error - GetField.');
Screen(' Modify the record: add "'+IntToStr(uRecNum)+'" to '+
' '+StrPas(TempBuf)+' ');
{ Put the record number at the start of the field }
StrPCopy(DestBuf, IntToStr(Integer(uRecNum)));
StrCat(DestBuf, ' ');
{ Add the record number to the head of the field }
StrLCat(DestBuf, TempBuf, (30 - strlen(DestBuf)));
{ Update the buffer value }
ChkRslt(DbiPutField(hCur, 2,
PChar(pRecBuf)+uRecOffset,
@DestBuf),
DBIERR_NONE, ' Error - GetField.');
end;
{ Write uNumBuf records to the table }
Screen('');
Screen(' Write '+IntToStr(uNumBuf)+' records to the '+
szCopyTblName+' table...');
ChkRslt(DbiWriteBlock(hCurCopy, uNumBuf, pRecBuf), DBIERR_NONE,
' Error := WriteBlock.');
{ Go to the beginning of the table }
Screen('');
Screen(' Go to the beginning of the '+szCopyTblName+' table...');
ChkRslt(DbiSetToBegin(hCurCopy), DBIERR_NONE,
' Error - SetToBegin.');
Screen(' Display the '+szCopyTblName+' table...');
ChkRslt(DisplayTable(hCurCopy, uNumRecs), DBIERR_NONE,
' Error - DisplayTable.');
{ Release allocated memory }
FreeMem(pRecBuf, CurProp.iRecBufSize * sizeof(BYTE) * uNumBuf);
Screen('');
Screen(' Close the tables...');
ChkRslt(DbiCloseCursor(hCur), DBIERR_NONE,
' Error - CloseCursor.');
ChkRslt(DbiCloseCursor(hCurCopy), DBIERR_NONE,
' Error - CloseCursor.');
Screen(' Deleting the "'+szCopyTblName+'" table...');
ChkRslt(DbiDeleteTable(hDb, pCHAR(szCopyTblName), pCHAR(szTblType)),
DBIERR_NONE, ' Error - DeleteTable.');
Screen(' Close the Database and exit IDAPI...');
CloseDbAndexit(hDb);
Screen('');
Screen('*** End of Example ***');
end.