Replaces the `return NIL` stubs with real implementations that read
from the current workarea. Covers the info codes actually used by
downstream code (FiveSql2 TSqlIndex, standalone callers):
DBINFO:
DBI_ISDBF, DBI_CANPUTREC, DBI_FULLPATH, DBI_TABLEEXT, DBI_MEMOEXT,
DBI_SHARED, DBI_ISREADONLY, DBI_GETRECSIZE, DBI_DBVERSION,
DBI_RDDVERSION, DBI_BOF, DBI_EOF, DBI_FOUND, DBI_FCOUNT, DBI_ALIAS,
DBI_POSITIONED
DBORDERINFO:
DBOI_EXPRESSION, DBOI_NAME, DBOI_NUMBER, DBOI_POSITION,
DBOI_ORDERCOUNT, DBOI_KEYCOUNT, DBOI_KEYCOUNTRAW
Unknown info codes still return NIL (Harbour's forgiving fallback).
New accessors on DBFArea (FullPath, IsShared, IsReadOnly) expose the
private filePath/shared/readOnly fields to the hbrtl layer without
plumbing them through the generic Area interface.
Unblocks TSqlIndex:FindExclusive's original DBI_FULLPATH/DBI_SHARED
scan — though the short-circuit there stays in place for now since
it's a correctness workaround that no longer masks a crash thanks
to the recent gengo PushMemvar fallback.
Validation:
- FiveSql2 43/43 (0 warnings)
- Harbour compat 51/51
- go test ./... ALL PASS
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
CharlesKWON
d74014a235