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harbour-core/harbour/source/rdd/dbf1.c
Przemyslaw Czerpak 64f97582d9 2008-09-13 18:49 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/include/hbpp.h
  * harbour/include/hbvm.h
  * harbour/include/hbcomp.h
  * harbour/include/hbcompdf.h
  * harbour/include/hbtrace.h
  * harbour/include/hbapilng.h
  * harbour/include/hbinit.h
  * harbour/source/rtl/langapi.c
  * harbour/source/pp/ppcore.c
  * harbour/source/pp/hbpp.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/hvm.c
  * harbour/source/common/hbver.c
  * harbour/source/common/hbtrace.c
  * harbour/source/common/expropt2.c
  * harbour/source/compiler/complex.c
  * harbour/source/compiler/hbident.c
  * harbour/source/compiler/hbfunchk.c
    * changed some declarations from 'char *' to 'const char *' and
      fixed casting for some more pedantic compilers

  * harbour/source/pp/ppcore.c
    ! fixed one typo which could cause memory leak and even GPF

  * harbour/common.mak
  * harbour/source/vm/Makefile
  * harbour/source/rtl/Makefile
  - harbour/source/rtl/set.c
  + harbour/source/vm/set.c
  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
    * moved from RTL to HVM
    * eliminated hb_set global structure
    * moved set structure to HVM stack
    + added internal function hb_setClone() which is used to create
      copy of SET structure for child threads
    * hidden HB_SET_STRUCT declaration - 3-rd part code must not access it
      directly. Dedicated hb_set*() functions should be used instead.
    + added new function:
         BOOL hb_setSetItem( HB_set_enum set_specifier, PHB_ITEM pItem )
      which allow to change some set by 3-rd party code.
      TODO: not all SETs can be changed yet - if someone have a while
            then please add code for missing ones.

  * harbour/include/set.ch
  * harbour/include/hbset.h
    + added _SET_CODEPAGE which works like _SET_LANGUAGE giving common
      interface

  * harbour/include/hbsetup.h
    + added HB_CODEPAGE_DEFAULT which works like HB_LANG_DEFAULT

  * harbour/source/vm/hvm.c
    ! fixed builds which uses non EN lang or code page modules
      by forcing linking the chosen ones

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/include/hbapicdp.h
  * harbour/source/rtl/cdpapi.c
    - removed global code page variable: hb_cdp_page and moved
      code page settings to HVM stack
    + added new function hb_cdpID() which returns current code page
      character ID
    + added new functions hb_vmCDP() and hb_vmSetCDP() to get/set
      active for given thread code page structure

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/include/hbapilng.h
  * harbour/source/rtl/langapi.c
    + moved lang setting to HVM stack
    + added new functions hb_vmLang() and hb_vmSetLang() to get/set
      active for given thread language module

  * harbour/include/hbvmpub.h
  * harbour/include/hbstack.h
  * harbour/include/hbapi.h
  * harbour/source/vm/estack.c
  * harbour/source/vm/dynsym.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/memvars.c
    * changed memvar handles for HB_HANDLE to void * which is directly
      casted to PHB_ITEM - new memvar references
    * changed HB_DYNS declarations for MT mode. In MT mode HB_DYNS does
      not contain area and memvar handles which are moved to thread
      local HVM stack
    + added array for thread local memvar and area handles to HVM stack
    % eliminated global continues array with all memvars and detached locals
    % changed HB_IT_MEMVAR to use pointers to HB_ITEM directly - it resolve
      synchronization problems in MT mode and should also improve the speed
      and reduce memory usage. It should be well visible in applications which
      uses lot of detached locals.
    - removed hb_memvarsInit() and hb_memvarsFree() - they are not necessary
      now because we do not longer use array with all allocated memvars
      and detached local and private stack initialization is made
      automatically
    + added internal functions hb_dynsymGetMemvar()/hb_dynsymSetMemvar()
    + added hb_memvarGetValueBySym() for debugger
    * moved PRIVATE variable stack to HVM stack
    * eliminated all static variables in memvars module

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/source/rtl/fserror.c
    * moved IO errors to HVM stack
    + added special IO error handling which works without HVM stack
      It allows to use hb_fs*() functions without allocated stack
      by 3-rd party threads.

  * harbour/source/rtl/filesys.c
    * moved hb_fsCurDir() to HVM stack with special handling to work
      with HVM stack like IO errors

  * harbour/source/rdd/workarea.c
    * allocated RDD node array in bigger peaces to reduce later RT
      reallocations in MT mode. If user want to add dynamically more
      then 64 RDDs then it should synchronize this operation himself.

  * harbour/source/rdd/wacore.c
    * moved WA list, current WA, default RDD and neteer() flag to HVM stack

  * harbour/include/hbdefs.h
    - removed HB_HANDLE declaration

  * harbour/include/hbapi.h
    - removed HB_VALUE structure - it's not longer used due to different
      memvar handling
    * updated hb_struMemvar to new memvar handling
    * replaced hb_vmIsLocalRef() and hb_memvarsIsMemvarRef() with
      hb_vmIsStackRef() which respect multiple stack and new memvar
      and static structures and location in GC mark pass.

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/source/vm/hvm.c
    + added support for thread specific data located on HVM stack
      Now it's possible to allocate static variables which are
      local to thread. Such variables are allocated on HVM stack
      and automatically destroyed. To declare new TSD variable use:
         HB_TSD_NEW( <name>, <size>, <init>, <destruct> )
      <name> - name of variable which holds TSD handler
      <size> - size of TSD are which has to be allocated
      <init> - init function, executed when new TSD is allocated by thread
               (thread access given TSD 1-st time). This function receives
               void * pointer to allocated area.
      <destruct> - destructor function executed when HVM stack is destroyed
      f.e.:
         static HB_TSD_NEW( s_scrData, sizeof( HB_SCRDATA ),
                            NULL, hb_xSaveRestRelease );
      To initialize dynamically allocated TSD variable use:
         HB_TSD_INIT( <name>, <size>, <init>, <destruct> )
      Pointer to TSD can be accessed using hb_stackGetTSD( &<name> )
      where <name> is name of variable which holds TSD handler, f.e.:
         PHB_SCRDATA pScrData = ( PHB_SCRDATA ) hb_stackGetTSD( &s_scrData );
      See source/rtl/xsavescr.c as an example
      It's also possible to test if data has been already allocated for
      current thread by:
         hb_stackTestTSD( &<name> ) => pData
      it works like hb_stackGetTSD() but return NULL if current thread data
      has not been allocated yet.

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
    * changed hb_stack location to thread local storage in MT mode
    + added functions and macros to access/assign new HVM stack members
    + changed garbage collection mark functions to work with multiple
      stacks, thread local static and memvar variables

  * harbour/source/rtl/xsavescr.c
    * use TSD data for screen buffer to make __XSAVESCREEN()/__XRESTSCREEN()
      thread independent

  * harbour/source/rtl/idle.c
    * use TSD data for idle task settings and codeblocks
    - removed hb_idleShutDown() - it's not longer necessary

  * harbour/source/rtl/setkey.c
    * use TSD data for allocated keys to make SETKEY() thread independent

  * harbour/source/rtl/math.c
    * moved math error handler, math error block, math error mode and
      math error structure to TSD

  * harbour/source/rtl/errorapi.c
    * moved error handler, error block, error launch counter and DOS error
      value to TSD

  * harbour/source/rtl/inkey.c
    * moved inkey "before" and "after" blocks to TSD

  * harbour/source/rdd/hsx/hsx.c
    * moved HSX handles array to TSD

  * harbour/include/hbapigt.h
  * harbour/source/rtl/console.c
    - removed hb_setkeyInit() and hb_setkeyExit() - they are not longer
      necessary, allocated resources will be freed by TSD destructor
      function

  * harbour/include/hbapi.h
  * harbour/source/rtl/console.c
    * removed hb_conXSaveRestRelease() - it's not longer necessary,
      allocated resources will be freed by TSD destructor function

  * harbour/source/vm/macro.c
    * moved s_macroFlags to TSD

  * harbour/source/rtl/accept.c
    * moved accept buffer to TSD

  * harbour/include/hbcomp.h
  * harbour/include/hbcompdf.h
  * harbour/include/hbxvm.h
  * harbour/source/compiler/hbmain.c
  * harbour/source/compiler/hbfix.c
  * harbour/source/compiler/hbpcode.c
  * harbour/source/compiler/hbdead.c
  * harbour/source/compiler/complex.c
  * harbour/source/compiler/genc.c
  * harbour/source/compiler/gencc.c
  * harbour/source/compiler/hbopt.c
  * harbour/source/compiler/hblbl.c
  * harbour/source/compiler/hbstripl.c
  * harbour/source/compiler/harbour.y
  * harbour/source/compiler/harbour.yyc
  * harbour/source/compiler/harbour.yyh
  * harbour/source/vm/hvm.c
    + added new PCODE HB_P_THREADSTATICS
    + added support for static variables which are local to thread:
         THREAD STATIC <varname [:= <exp>], ...>
      They work like normal static variables but each thread operates
      on its own copy.
    * added protection against possible double call to hb_xfree()
      It can happen due to wrong marking expressions as used by bison
      and executing destructors after our free code when syntax error
      appear.

  * harbour/source/rtl/perfuncs.prg
  * harbour/source/rtl/menuto.prg
  * harbour/source/rtl/getlist.prg
  * harbour/source/rtl/readvar.prg
  * harbour/source/rtl/text.prg
    * use THREAD STATIC variables to make above code MT safe

  * harbour/include/hbgtcore.h
  * harbour/source/rtl/hbgtcore.c
    + added hb_gt_BaseFree() which will release current GT pointer
      locked by hb_gt_Base() function. This function will be used
      to optional automatic GT access synchronization when threads
      share the same GT.

  * harbour/source/rtl/gtapi.c
  * harbour/source/rtl/inkeyapi.c
  * harbour/source/rtl/mouseapi.c
  * harbour/contrib/hbct/ctwin.c
    * free GT pointer by hb_gt_BaseFree()
      TODO: CTWIN is not MT safe yet - it will be updated together
            with core GT when we add multi window interface for
            thread with own console window.

  * harbour/bin/hb-func.sh
  * harbour/config/linux/gcc.cf
    + added rt lib to Linux builds

  * harbour/bin/postinst.sh
    * create MT safe version of FM stat library: fmmt

  * harbour/bin/pack_src.sh
    + added support for ZIP packing

  * harbour/include/hbapi.h
  * harbour/include/hbvm.h
  * harbour/source/vm/hvm.c
    + added hb_vmThreadInit()/hb_vmThreadQuit() functions - they initialize
      HVM for calling thread so it can execute .prg code and call HVM
      functions. They can be used by 3-rd party code threads.
    + added hb_vmUnlock()/hb_vmLock() functions which informs that
      thread will not operate on HVM structures for some time allowing
      to execute single thread only processes like GC.
    + added hb_vmThreadQuitRequest() which sends stop request to given
       thread
    + added hb_vmWaitForThreads() which stops main thread execution waiting
      for other threads
    + added hb_vmSuspendThreads() and hb_vmResumeThreads() used be GC
      to stop all HVM threads before mark/swap scan
    + added linked list of HVM stacks
    + added hb_vmTerminateThreads() used by main HVM thread in QUIT state
    * moved EXIT procedures execution from QUIT request to HVM QUIT state
      in MT mode. It may effects some non structural code which tries to
      access private variables in EXIT functions but it's much cleaner
      and understandable for user. Please remember that we guaranties
      that ALWAYS code in BEGIN SEQUENCE is _always_ executed even after
      HVM QUIT request just like destructs. Personally I think that we
      should move EXIT procedures execution also in ST mode.
    * changed startup and cleanup code for new internal structures
    * changes startup and cleanup code for MT mode
    % removed some redundant HB_ITEM type settings
    ! eliminated non MT safe code which was using reference counters
      without protection

  * harbour/common.mak
  * harbour/source/vm/Makefile
  + harbour/include/hbthread.h
  + harbour/source/vm/thread.c
    + added C level functions to manage threads and synchronization objects
      See hbthread.h for detail description. They are based on PTHREAD API
      and PTHREAD documentation can be used as reference. I intentionally
      keep this list small for easier multiplatform porting.
      Now they have been implemented for PTHREADS (POSIX threads supported by
      many different OSes), MS-Win32/64 and OS2. The OS2 version is not tested
      at all. I do not even know if it can be compiled so please make tests.
      I used Internet resources and some part of xHarbour code as documentation
      for OS2 MT API. It should be quite easy to add other platforms if necessary.
      Harbour core code needs non recursive mutexes, conditional variables and
      TLS for one pointer. If platforms does not support conditional variables
      (f.e. MS-Win or OS2) then they can be emulated using multistate semaphores.
    + added .prg functions to manage threads and synchronization objects:
         hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
         hb_threadJoin( <pThID> [, @<xRetCode> ] ) -> <lOK>
         hb_threadDetach( <pThID> ) -> <lOK>
         hb_threadQuitRequest( <pThID> ) -> <lOK>
         hb_threadWaitForAll() -> NIL
         hb_mutexCreate() -> <pMtx>
         hb_mutexLock( <pMtx> [, <nTimeOut> ] ) -> <lLocked>
         hb_mutexUnlock( <pMtx> ) -> <lOK>
         hb_mutexNotify( <pMtx> [, <xVal>] ) -> NIL
         hb_mutexNotifyAll( <pMtx> [, <xVal>] ) -> NIL
         hb_mutexSubscribe( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
         hb_mutexSubscribeNow( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
      The function list should give similar to xHarbour API but they are not exactly
      the same and except of hb_mutex*() functions which should replicate xHarbour behavior.

  + harbour/source/vm/vmmt
  + harbour/source/vm/vmmt/Makefile
    + added hbvmmt library to GNU make builds.
      Non GNU make builds should be updated.

  * harbour/contrib/hbct/pos1.c
  * harbour/contrib/gtwvg/gtwvg.c
  * harbour/contrib/rddads/ads1.c
  * harbour/contrib/hbmisc/spd.c
  * harbour/contrib/hbbmcdx/bmdbfcdx.c
  * harbour/contrib/examples/rdddbt/dbfdbt1.c
  * harbour/source/vm/runner.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/hvm.c
  * harbour/source/rtl/console.c
  * harbour/source/rtl/strcase.c
  * harbour/source/rtl/spfiles.c
  * harbour/source/rtl/defpath.c
  * harbour/source/rtl/hbgtcore.c
  * harbour/source/rtl/dateshb.c
  * harbour/source/rtl/mlcfunc.c
  * harbour/source/rtl/fstemp.c
  * harbour/source/rtl/is.c
  * harbour/source/rtl/setcolor.c
  * harbour/source/rtl/errorint.c
  * harbour/source/rtl/transfrm.c
  * harbour/source/rtl/dates.c
  * harbour/source/rtl/filesys.c
  * harbour/source/rtl/gtdos/gtdos.c
  * harbour/source/rtl/gtwin/gtwin.c
  * harbour/source/rtl/gtwvt/gtwvt.c
  * harbour/source/rtl/gtxwc/gtxwc.c
  * harbour/source/rtl/gttrm/gttrm.c
  * harbour/source/rtl/gtpca/gtpca.c
  * harbour/source/rtl/gtcgi/gtcgi.c
  * harbour/source/rtl/gtcrs/gtcrs.c
  * harbour/source/rtl/gtstd/gtstd.c
  * harbour/source/rtl/gtsln/gtsln.c
  * harbour/source/rtl/gtsln/gtsln.h
  * harbour/source/rdd/dbf1.c
  * harbour/source/rdd/sdf1.c
  * harbour/source/rdd/delim1.c
  * harbour/source/rdd/dbcmd.c
  * harbour/source/rdd/hbdbsort.c
  * harbour/source/rdd/workarea.c
  * harbour/source/rdd/dbffpt/dbffpt1.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
  * harbour/source/rdd/dbfntx/dbfntx1.c
  * harbour/source/rdd/hsx/hsx.c
  * harbour/source/rdd/hbsix/sxfname.c
    * use API functions instead of direct accessing to hb_cdp_page or hb_set

  * harbour/source/rtl/fstemp.c
  * harbour/source/rtl/fssize.c
  * harbour/source/rtl/hbffind.c
  * harbour/source/rtl/filesys.c
    * encapsulate potentially slow IO operation inside
      hb_vmUnlock()/hb_vmLock() calls to allow other thread GC
      activation

  * harbour/contrib/hbnf/fttext.c
    ! fixed casting

  * harbour/contrib/gtwvg/gtwvg.h
    - removed #include <comctl32.h> - my MinGW and MinGW/CE instalations do
      not have them. If it exists in some newer ones then it has to be
      covered by #if version checking.

  * harbour/source/vm/dynsym.c
    - removed hb_dynsymLog() and hb_dynsymMemvarHandle()
    * modified code to be MT safe and improved speed of some operations
    * added MUEXT protection for global dynamic table access

  * harbour/include/hbapi.h
  * harbour/source/vm/garbage.c
    * changed to work with MT HVM
    * changed to work with new memvar structures and thread local static and
      memvar variables
    * added MUEXT protection for linked block lists
    + added parameter to hb_gcCollectAll() which will force GC activation
      in MT mode by temporary suspending all executed threads.
    + added logical parameter to HB_GCALL() functions which is passed to
      hb_gcCollectAll()

  * harbour/source/vm/fm.c
    * added MUEXT protection for FM statistic module
    * added MT protection for reference counters. For platforms
      which supports atomic incrmenetation/decrementation (f.e.
      Interlocked*() functions in MS-Win) such operations are
      used. For other it's MUTEX protection. It gives MT safe
      readonly access for HVM complex variables without user
      synchronization. The MUTEX protection can cause some speed
      overhead so it's good to define MT safe version of
      HB_ATOM_INC()/HB_ATOM_DEC() in hbthread.h if given platform
      has them. Now they are defined only for Windows. For other
      platforms We can define can define them in assembler for some
      most popular CPUs in the future.

  * harbour/source/vm/classes.c
    * changed class definition array. Now it keeps pointers to class
      structures.
    * In MT mode allocated at HVM startup big enough array for class
      definitions to avoid later RT reallocations. It effectively eliminates
      MUTEX synchronization for class structure access.
    * protect by MUTEX code for new class creation

  * harbour/source/debug/dbgentry.c
    * eliminated hbvmopt.h and direct accessing to HVM structures

  * harbour/source/rtl/gtclip.c
    * protect with MUTEX access to internal clipboard data

  * harbour/source/rdd/nulsys/nulsys.c
    + added hb_rddCloseAll()

  + harbour/tests/mt
  + harbour/tests/mt/mttest01.prg
  + harbour/tests/mt/mttest02.prg
  + harbour/tests/mt/mttest03.prg
  + harbour/tests/mt/mttest04.prg
  + harbour/tests/mt/mttest05.prg
  + harbour/tests/mt/mttest06.prg
  + harbour/tests/mt/mttest07.prg
    + added some demonstration/test small MT programs written
      using Harbour language. Some of them can be also compiled
      by xHarbour but xHarbour does not pass any of my tests in
      real multi-CPU machine so do not expect they will work
      correctly.

   Harbour threads needs OS threads support. Each Harbour thread is directly
   mapped to OS thread. It's not very efficient on some older system where
   cost of thread creation and/or task switching is very expensive but it
   should not be bigger problem for modern OS-es which can support threads
   in practice nearly in user space only.
   I haven't touched Harbour function calling convention which comes from
   Clipper. It means that we do not pass pointer to VM to each functions
   like CLIP or xBase++. To resolve the problem I have to use thread local
   storage (TLS) where such pointer is kept. If platform does not support
   TLS then it can be emulated by us. Anyhow the speed of accessing TLS
   data and extracting HB_STACK poitner is critical for performance.
   Some compilers depending on used hardware and OS give native support
   for TLS (f.e. __thread keyword in GCC/BCC or __declspec( thread ) in MSVC).
   This should give optimal performance. On other Harbour uses TLS functions
   like TlsGetValue() (MS-WIN) or pthread_getspecific() (PTHREAD) are used.
   OS2 gives quite interesting TLS functionality which seems to be quite fast
   though it will be interesting to know how it is iplemented internally for
   real multi CPU machines (if it depends on CPU exception then the
   performance will be bad). We need TLS only for one pointer to HB_STACK
   structure.
   I haven't added any tricks like HB_THREAD_STUB in xHarbour to reduce
   the cost of TLS access. If it will be necessary for some platform the we
   can add it.
   Except TLS Harbour threads needs OS support for non recursive mutexes or
   critical sections and conditional variables. If platforms does not support
   conditional variables (f.e. MS-Win or OS2) then they can be emulated using
   multistate semaphores. I intentionally didn't create code which may need
   recursive mutexes. The non recursive ones are often faster and some
   platforms may not support recursive mutexes so they will have to be
   emulated by us.
   Harbour uses reference counters for complex variables. It means that even
   readonly access to complex item causes internal write operations necessary
   to increment/decrement its reference counter. To make such readonly access
   MT safe we have to make incrementation and decrementation with result
   checking atomic. By default it's done by mutex inside vm/fm.c but some
   platforms have native support for atomic inc/dec operations, f.e. 
   Interlocked*() functions in MS-Win. If they are available then such
   functions should be used to not reduce the performance by mutex call
   very often used functions. For many CPUs it should be quite easy to
   implement such atomic inc/dec functionality in assembler. F.e. for
   GCC and x86@32 it may looks like:

      static __inline__ void hb_atomic_inc32( volatile int * p )
      {
         __asm__ __volatile__(
            "lock incl %0"
            :"=m" (*p) :"m" (*p)
         );
      }

      static __inline__ int hb_atomic_dec32( volatile int * p )
      {
         unsigned char c;
         __asm__ __volatile__(
            "lock decl %0"
            "sete %1"
            :"=m" (*p), "=qm" (c) :"m" (*p) : "memory"
         );
         return c == 0;
      }

   and then it's enough to define in hbthreads.h:
      #define HB_ATOM_INC( p )    hb_atomic_inc32( ( volatile int * ) p )
      #define HB_ATOM_DEC( p )    hb_atomic_dec32( ( volatile int * ) p )

   Probably I'll make it for some most popular CPUs in the future.
   In Harbour each thread which wants to call HVM functions have to allocate
   it's own HVM stack. It's done hb_vmThreadInit(). The HVM stack is freed
   by calling hb_vmThreadQuit(). This functions can be called also by 3-rd
   party threads if they want to call HVM functions or execute .prg code.
   Calling HVM functions without allocated stack will cause GPF.
   I moved most of static variables to HVM stack to make them thread
   local. But some of them like FS errors have their own alternative
   copy which is used when thread does not allocate HVM stack. It allows
   to use hb_fs*() functions without HVM stack but programmer have to
   know that error codes return by hb_fs*Error() functions can be
   overwritten by other threads which also didn't allocated HVM stack.
   To execute garbage collector scan and mark pass it's necessary to
   stop other HVM threads. Otherwise the scan may give false results.
   It's also possible to not stop threads but protect with mutex all
   operations on GC items but it will probably cause performance reduction
   and will force some other modifications. Maybe I'll implement it
   in the future.
   I didn't use any OS level thread KILL or CANCEL calls. All HVM threads
   have to be cleanly removed without any resource leaks.
   QUIT command terminate only calling thread. If main (startup) HVM
   thread call QUIT then it sends QUIT request to all existing threads.
   In QUIT state ALWAYS statements and destructors are executed.
   New thread is created by:
      hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
   The returned value is a pointer to internal thread structure which
   can be used in JOIN or DETACH operations. Each thread should be Joined
   or DETACHED to avoid resource leaks. If programmer does not store
   <pThID> or all instances of <pThID> are destroyed then thread is
   automatically detached. I do not know clear method of thread detaching
   in OS2. If some OS2 users knows it then plase update vm/hbthread.c.
   When thread terminates then all locked by this thread mutexes are
   released.
   Each thread uses its own memvars (PRIVATEs and PUBLICs) and work areas.
   When new thread is created then it inherits from parent thread:
      - code page
      - language
      - SETs
      - default RDD
   error block is initialized to default value by calling ERRORSYS()
   and PUBLIC variable GetList := {} is created.
   The following objects are initialized to default value:
         - error block
         - math error handler and math error block
         - macro compiler features setting (hb_setMacro())
           or move them to SETs.
   We can think about inheriting them. It's also possible to add
   inheriting of all visible memvars but I do not know it's good
   idea.

   Compilation and linking:
   For MT mode HVM library should be compiled with HB_MT_VM macro.
   GNU make automatically creates hbvmmt library which should be
   linked with Harbour MT programs instead of hbvm.
   Non GNU make files should be updated.
   If given compiler support TLS then you can try to set HB_USE_TLS
   to force using native compiler TLS support. Now it's enabled by
   default only for BCC. For Linux and GCC builds it may depend also
   on used GLIBC version. In older system there is no TLS support
   at all or TLS works only for shared binaries so I haven't enabled
   it. If you will test some other compiler then please add default
   native TLS support for them in hbthread.h
   Users using hb* scripts can simply use -mt switch when they want
   to create MT program, f.e.:
      hbmk -n -w3 -es2 -mt mttest01.prg

   There are still some minor things which should be done but I'll
   do them later. Current state seems to be fully functional.
   The most important and still missing is our own file lock server
   for RDD synchronization in POSIX systems. Kernel internally
   recognize POSIX locks by PID and file i-node - not PID and file
   handle. It means that the same file open more then once by one
   process shares locks. Because POSIX locks can be overwritten
   then we do not have any synchronization between aliased workareas
   or threads using the same table in *nixes. We have to make
   synchronization ourselves. I'll create such lock server ASAP.

   Please test and enjoy using Harbour threads.
2008-09-13 16:53:45 +00:00

5564 lines
159 KiB
C
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/*
* $Id$
*/
/*
* Harbour Project source code:
* DBF RDD module
*
* Copyright 1999 Bruno Cantero <bruno@issnet.net>
* www - http://www.harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#define HB_TRIGVAR_BYREF
#include "hbapi.h"
#include "hbinit.h"
#include "hbvm.h"
#include "hbapiitm.h"
#include "hbrdddbf.h"
#include "hbdbf.h"
#include "hbapierr.h"
#include "hbapilng.h"
#include "hbset.h"
#include "hbdate.h"
#include "hbmath.h"
#include "hbdbsort.h"
#include "hbsxfunc.h"
#include "error.ch"
#include "rddsys.ch"
#include "hbsxdef.ch"
#ifndef HB_CDP_SUPPORT_OFF
# include "hbapicdp.h"
#endif
static USHORT s_uiRddId = ( USHORT ) -1;
static RDDFUNCS dbfSuper;
static const RDDFUNCS dbfTable = { ( DBENTRYP_BP ) hb_dbfBof,
( DBENTRYP_BP ) hb_dbfEof,
( DBENTRYP_BP ) hb_dbfFound,
( DBENTRYP_V ) hb_dbfGoBottom,
( DBENTRYP_UL ) hb_dbfGoTo,
( DBENTRYP_I ) hb_dbfGoToId,
( DBENTRYP_V ) hb_dbfGoTop,
( DBENTRYP_BIB ) hb_dbfSeek,
( DBENTRYP_L ) hb_dbfSkip,
( DBENTRYP_L ) hb_dbfSkipFilter,
( DBENTRYP_L ) hb_dbfSkipRaw,
( DBENTRYP_VF ) hb_dbfAddField,
( DBENTRYP_B ) hb_dbfAppend,
( DBENTRYP_I ) hb_dbfCreateFields,
( DBENTRYP_V ) hb_dbfDeleteRec,
( DBENTRYP_BP ) hb_dbfDeleted,
( DBENTRYP_SP ) hb_dbfFieldCount,
( DBENTRYP_VF ) hb_dbfFieldDisplay,
( DBENTRYP_SSI ) hb_dbfFieldInfo,
( DBENTRYP_SVP ) hb_dbfFieldName,
( DBENTRYP_V ) hb_dbfFlush,
( DBENTRYP_PP ) hb_dbfGetRec,
( DBENTRYP_SI ) hb_dbfGetValue,
( DBENTRYP_SVL ) hb_dbfGetVarLen,
( DBENTRYP_V ) hb_dbfGoCold,
( DBENTRYP_V ) hb_dbfGoHot,
( DBENTRYP_P ) hb_dbfPutRec,
( DBENTRYP_SI ) hb_dbfPutValue,
( DBENTRYP_V ) hb_dbfRecall,
( DBENTRYP_ULP ) hb_dbfRecCount,
( DBENTRYP_ISI ) hb_dbfRecInfo,
( DBENTRYP_ULP ) hb_dbfRecNo,
( DBENTRYP_I ) hb_dbfRecId,
( DBENTRYP_S ) hb_dbfSetFieldExtent,
( DBENTRYP_P ) hb_dbfAlias,
( DBENTRYP_V ) hb_dbfClose,
( DBENTRYP_VP ) hb_dbfCreate,
( DBENTRYP_SI ) hb_dbfInfo,
( DBENTRYP_V ) hb_dbfNewArea,
( DBENTRYP_VP ) hb_dbfOpen,
( DBENTRYP_V ) hb_dbfRelease,
( DBENTRYP_SP ) hb_dbfStructSize,
( DBENTRYP_P ) hb_dbfSysName,
( DBENTRYP_VEI ) hb_dbfEval,
( DBENTRYP_V ) hb_dbfPack,
( DBENTRYP_LSP ) hb_dbfPackRec,
( DBENTRYP_VS ) hb_dbfSort,
( DBENTRYP_VT ) hb_dbfTrans,
( DBENTRYP_VT ) hb_dbfTransRec,
( DBENTRYP_V ) hb_dbfZap,
( DBENTRYP_VR ) hb_dbfChildEnd,
( DBENTRYP_VR ) hb_dbfChildStart,
( DBENTRYP_VR ) hb_dbfChildSync,
( DBENTRYP_V ) hb_dbfSyncChildren,
( DBENTRYP_V ) hb_dbfClearRel,
( DBENTRYP_V ) hb_dbfForceRel,
( DBENTRYP_SVP ) hb_dbfRelArea,
( DBENTRYP_VR ) hb_dbfRelEval,
( DBENTRYP_SI ) hb_dbfRelText,
( DBENTRYP_VR ) hb_dbfSetRel,
( DBENTRYP_OI ) hb_dbfOrderListAdd,
( DBENTRYP_V ) hb_dbfOrderListClear,
( DBENTRYP_OI ) hb_dbfOrderListDelete,
( DBENTRYP_OI ) hb_dbfOrderListFocus,
( DBENTRYP_V ) hb_dbfOrderListRebuild,
( DBENTRYP_VOI ) hb_dbfOrderCondition,
( DBENTRYP_VOC ) hb_dbfOrderCreate,
( DBENTRYP_OI ) hb_dbfOrderDestroy,
( DBENTRYP_OII ) hb_dbfOrderInfo,
( DBENTRYP_V ) hb_dbfClearFilter,
( DBENTRYP_V ) hb_dbfClearLocate,
( DBENTRYP_V ) hb_dbfClearScope,
( DBENTRYP_VPLP ) hb_dbfCountScope,
( DBENTRYP_I ) hb_dbfFilterText,
( DBENTRYP_SI ) hb_dbfScopeInfo,
( DBENTRYP_VFI ) hb_dbfSetFilter,
( DBENTRYP_VLO ) hb_dbfSetLocate,
( DBENTRYP_VOS ) hb_dbfSetScope,
( DBENTRYP_VPL ) hb_dbfSkipScope,
( DBENTRYP_B ) hb_dbfLocate,
( DBENTRYP_P ) hb_dbfCompile,
( DBENTRYP_I ) hb_dbfError,
( DBENTRYP_I ) hb_dbfEvalBlock,
( DBENTRYP_VSP ) hb_dbfRawLock,
( DBENTRYP_VL ) hb_dbfLock,
( DBENTRYP_I ) hb_dbfUnLock,
( DBENTRYP_V ) hb_dbfCloseMemFile,
( DBENTRYP_VP ) hb_dbfCreateMemFile,
( DBENTRYP_SVPB ) hb_dbfGetValueFile,
( DBENTRYP_VP ) hb_dbfOpenMemFile,
( DBENTRYP_SVPB ) hb_dbfPutValueFile,
( DBENTRYP_V ) hb_dbfReadDBHeader,
( DBENTRYP_V ) hb_dbfWriteDBHeader,
( DBENTRYP_R ) hb_dbfInit,
( DBENTRYP_R ) hb_dbfExit,
( DBENTRYP_RVVL ) hb_dbfDrop,
( DBENTRYP_RVVL ) hb_dbfExists,
( DBENTRYP_RSLV ) hb_dbfRddInfo,
( DBENTRYP_SVP ) hb_dbfWhoCares
};
/*
* Common functions.
*/
#define HB_BLANK_APPEND 1
#define HB_BLANK_EOF 2
#define HB_BLANK_ROLLBACK 3
#define HB_BLANK_SKIP 100
#define HB_BLANK_AUTOINC 101
static HB_LONG hb_dbfGetRowVer( DBFAREAP pArea, USHORT uiField, HB_LONG * pValue )
{
DBFFIELD dbField;
BOOL fLck = FALSE;
*pValue = 0;
if( pArea->fShared && !pArea->fFLocked && !pArea->fHeaderLocked )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_LOCK, 0 ) != SUCCESS )
return FAILURE;
fLck = TRUE;
}
hb_fsSeek( pArea->hDataFile, sizeof( DBFHEADER ) +
uiField * sizeof( DBFFIELD ), FS_SET );
if( hb_fsRead( pArea->hDataFile, ( BYTE * ) &dbField,
sizeof( dbField ) ) == sizeof( dbField ) )
{
*pValue = HB_GET_LE_UINT64( &dbField.bReserved2 ) + 1;
HB_PUT_LE_UINT64( dbField.bReserved2, *pValue );
hb_fsSeek( pArea->hDataFile, sizeof( DBFHEADER ) +
uiField * sizeof( DBFFIELD ), FS_SET );
hb_fsWrite( pArea->hDataFile, ( BYTE * ) &dbField, sizeof( dbField ) );
}
if( fLck )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_UNLOCK, 0 ) != SUCCESS )
return FAILURE;
}
return SUCCESS;
}
static HB_LONG hb_dbfGetNextValue( DBFAREAP pArea, USHORT uiField )
{
HB_LONG nValue = 0;
DBFFIELD dbField;
hb_fsSeek( pArea->hDataFile, sizeof( DBFHEADER ) +
uiField * sizeof( DBFFIELD ), FS_SET );
if( hb_fsRead( pArea->hDataFile, ( BYTE * ) &dbField,
sizeof( dbField ) ) == sizeof( dbField ) )
{
nValue = HB_GET_LE_UINT32( dbField.bCounter );
HB_PUT_LE_UINT32( dbField.bCounter, nValue + dbField.bStep );
hb_fsSeek( pArea->hDataFile, sizeof( DBFHEADER ) +
uiField * sizeof( DBFFIELD ), FS_SET );
hb_fsWrite( pArea->hDataFile, ( BYTE * ) &dbField, sizeof( dbField ) );
}
return nValue;
}
static void hb_dbfUpdateStampFields( DBFAREAP pArea )
{
LONG lJulian = 0, lMilliSec = 0;
HB_LONG nRowVer = 0;
LPFIELD pField;
USHORT uiCount;
for( uiCount = 0, pField = pArea->lpFields; uiCount < pArea->uiFieldCount; uiCount++, pField++ )
{
switch( pField->uiType )
{
case HB_FT_MODTIME:
{
BYTE * pPtr = pArea->pRecord + pArea->pFieldOffset[ uiCount ];
if( lJulian == 0 )
hb_dateTimeStamp( &lJulian, &lMilliSec );
HB_PUT_LE_UINT32( pPtr, lJulian );
pPtr += 4;
HB_PUT_LE_UINT32( pPtr, lMilliSec );
break;
}
case HB_FT_ROWVER:
{
BYTE * pPtr = pArea->pRecord + pArea->pFieldOffset[ uiCount ];
if( nRowVer == 0 )
hb_dbfGetRowVer( pArea, uiCount, &nRowVer );
HB_PUT_LE_UINT64( pPtr, nRowVer );
break;
}
}
}
}
static void hb_dbfSetBlankRecord( DBFAREAP pArea, int iType )
{
BYTE *pPtr = pArea->pRecord, bFill = ' ', bNext;
ULONG ulSize = 1; /* 1 byte ' ' for DELETE flag */
USHORT uiCount;
LPFIELD pField;
for( uiCount = 0, pField = pArea->lpFields; uiCount < pArea->uiFieldCount; uiCount++, pField++ )
{
USHORT uiLen = pField->uiLen;
switch( pField->uiType )
{
case HB_FT_MEMO:
case HB_FT_IMAGE:
case HB_FT_BLOB:
case HB_FT_OLE:
bNext = uiLen == 10 ? ' ' : '\0';
break;
case HB_FT_DATE:
bNext = uiLen == 8 ? ' ' : '\0';
break;
case HB_FT_STRING:
case HB_FT_LOGICAL:
bNext = ' ';
break;
case HB_FT_LONG:
case HB_FT_FLOAT:
if( pField->uiFlags & HB_FF_AUTOINC )
{
if( iType == HB_BLANK_APPEND )
{
bNext = HB_BLANK_AUTOINC;
break;
}
else if( iType == HB_BLANK_ROLLBACK )
{
bNext = HB_BLANK_SKIP;
break;
}
}
bNext = ' ';
break;
case HB_FT_AUTOINC:
if( iType == HB_BLANK_APPEND )
bNext = HB_BLANK_AUTOINC;
else if( iType == HB_BLANK_ROLLBACK )
bNext = HB_BLANK_SKIP;
else
bNext = '\0';
break;
case HB_FT_INTEGER:
case HB_FT_DOUBLE:
if( pField->uiFlags & HB_FF_AUTOINC )
{
if( iType == HB_BLANK_APPEND )
{
bNext = HB_BLANK_AUTOINC;
break;
}
else if( iType == HB_BLANK_ROLLBACK )
{
bNext = HB_BLANK_SKIP;
break;
}
}
bNext = '\0';
break;
default:
bNext = '\0';
break;
}
if( bNext == bFill )
{
ulSize += uiLen;
}
else
{
memset( pPtr, bFill, ulSize );
pPtr += ulSize;
ulSize = 0;
if( bNext == HB_BLANK_SKIP )
{
pPtr += uiLen;
}
else if( bNext == HB_BLANK_AUTOINC )
{
HB_LONG nValue = hb_dbfGetNextValue( pArea, uiCount );
if( pField->uiDec )
nValue = ( HB_LONG ) hb_numDecConv( ( double ) nValue, - ( int ) pField->uiDec );
if( pField->uiType == HB_FT_INTEGER ||
pField->uiType == HB_FT_AUTOINC )
{
if( uiLen == 1 )
*pPtr = ( signed char ) nValue;
else if( uiLen == 2 )
HB_PUT_LE_UINT16( pPtr, nValue );
else if( uiLen == 3 )
HB_PUT_LE_UINT24( pPtr, nValue );
else if( uiLen == 4 )
HB_PUT_LE_UINT32( pPtr, nValue );
else if( uiLen == 8 )
HB_PUT_LE_UINT64( pPtr, nValue );
}
else if( pField->uiType == HB_FT_DOUBLE )
{
HB_PUT_LE_DOUBLE( pPtr, nValue );
}
else
{
USHORT ui = uiLen;
do
{
pPtr[ --ui ] = ( BYTE ) nValue % 10 + '0';
nValue /= 10;
}
while( ui && nValue >= 1 );
}
pPtr += uiLen;
}
else
{
ulSize = uiLen;
bFill = bNext;
}
}
}
memset( pPtr, bFill, ulSize );
ulSize = pArea->pRecord - pPtr - ulSize;
if( ulSize < ( ULONG ) pArea->uiRecordLen )
memset( pPtr, '\0', ( ULONG ) pArea->uiRecordLen - ulSize );
}
/*
* Executes user trigger function
*/
static BOOL hb_dbfTriggerDo( DBFAREAP pArea, int iEvent,
int iField, PHB_ITEM pItem )
{
BOOL fResult = TRUE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTriggerDo(%p,%d,%d,%p)", pArea, iEvent, iField, pItem));
if( hb_vmRequestQuery() == 0 )
{
if( hb_vmRequestReenter() )
{
hb_vmPushDynSym( pArea->pTriggerSym );
hb_vmPushNil();
/* nEvent */
hb_vmPushInteger( iEvent );
/* nArea */
hb_vmPushInteger( pArea->uiArea );
/* nFieldPos (GET/PUT) */
hb_vmPushInteger( iField );
/* xTrigVal (PREUSE/GET/PUT) */
if( pItem )
{
#ifdef HB_TRIGVAR_BYREF
hb_vmPushItemRef( pItem );
#else
hb_vmPush( pItem );
#endif
hb_vmDo( 4 );
}
else
{
/* SIx3 makes: hb_vmPushInteger( 0 ); */
hb_vmDo( 3 );
}
fResult = hb_parl( -1 );
hb_vmRequestRestore();
}
}
return fResult;
}
/*
* Set user trigger function
*/
static void hb_dbfTriggerSet( DBFAREAP pArea, PHB_ITEM pTrigger )
{
char * szName;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTriggerSet(%p,%p)", pArea, pTrigger));
szName = hb_itemGetCPtr( pTrigger );
pArea->pTriggerSym = *szName ? hb_dynsymFindName( szName ) : NULL;
if( pArea->pTriggerSym && !hb_dynsymIsFunction( pArea->pTriggerSym ) )
pArea->pTriggerSym = NULL;
pArea->fTrigger = pArea->pTriggerSym != NULL;
}
/*
* Return the total number of records.
*/
static ULONG hb_dbfCalcRecCount( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCalcRecCount(%p)", pArea));
if( pArea->hDataFile == FS_ERROR )
return 0;
else
return ( ULONG ) ( ( hb_fsSeekLarge( pArea->hDataFile, 0, FS_END ) -
pArea->uiHeaderLen ) / pArea->uiRecordLen );
}
/*
* Read current record from file.
*/
static BOOL hb_dbfReadRecord( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfReadRecord(%p)", pArea));
if( !pArea->fPositioned )
{
pArea->fValidBuffer = TRUE;
return TRUE;
}
if( pArea->ulRecNo > pArea->ulRecCount )
{
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
if( pArea->ulRecNo > pArea->ulRecCount )
{
pArea->fEof = pArea->fValidBuffer = TRUE;
return TRUE;
}
}
/* Read data from file */
hb_fsSeekLarge( pArea->hDataFile, ( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) ( pArea->ulRecNo - 1 ) *
( HB_FOFFSET ) pArea->uiRecordLen, FS_SET );
if( hb_fsRead( pArea->hDataFile, pArea->pRecord, pArea->uiRecordLen ) !=
pArea->uiRecordLen )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, EG_READ );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READ ) );
hb_errPutSubCode( pError, EDBF_READ );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, pArea->szDataFileName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FALSE;
}
if( SELF_GETREC( ( AREAP ) pArea, NULL ) == FAILURE )
return FALSE;
/* Set flags */
pArea->fValidBuffer = pArea->fPositioned = TRUE;
pArea->fDeleted = pArea->pRecord[ 0 ] == '*';
return TRUE;
}
/*
* Write current record to file.
*/
static BOOL hb_dbfWriteRecord( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfWriteRecord(%p)", pArea));
if( SELF_PUTREC( ( AREAP ) pArea, NULL ) == FAILURE )
return FALSE;
pArea->fRecordChanged = FALSE;
pArea->fDataFlush = TRUE;
return TRUE;
}
/*
* Set encryption password
*/
static BOOL hb_dbfPasswordSet( DBFAREAP pArea, PHB_ITEM pPasswd, BOOL fRaw )
{
BYTE byBuffer[ 8 ];
ULONG ulLen;
BOOL fKeySet = FALSE, fSet;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPasswordSet(%p,%p,%d)", pArea, pPasswd, fRaw));
ulLen = hb_itemGetCLen( pPasswd );
fSet = !pArea->fHasMemo && HB_IS_STRING( pPasswd ) && (!fRaw || ulLen == 8);
if( fSet )
{
ulLen = hb_itemGetCLen( pPasswd );
if( ulLen > 0 )
{
if( ulLen < 8 )
{
memcpy( byBuffer, hb_itemGetCPtr( pPasswd ), ulLen );
memset( byBuffer + ulLen, '\0', 8 - ulLen );
}
else
memcpy( byBuffer, hb_itemGetCPtr( pPasswd ), 8 );
}
}
if( pArea->pCryptKey )
hb_itemPutCL( pPasswd, ( char * ) pArea->pCryptKey, 8 );
else
hb_itemClear( pPasswd );
if( fSet )
{
if( pArea->pRecord && pArea->fPositioned )
{
SELF_GOCOLD( ( AREAP ) pArea );
pArea->fValidBuffer = FALSE;
}
if( pArea->pCryptKey )
{
/* clean the memory with password key - though it's not
* a serious actions in such case ;-)
*/
memset( pArea->pCryptKey, '\0', 8 );
hb_xfree( pArea->pCryptKey );
pArea->pCryptKey = NULL;
}
if( ulLen > 0 )
{
/* at this moment only one encryption method is used,
I'll add other later, [druzus] */
pArea->bCryptType = DB_CRYPT_SIX;
pArea->pCryptKey = ( BYTE * ) hb_xgrab( 8 );
/* SIX encode the key with its own value before use */
if( !fRaw )
hb_sxEnCrypt( byBuffer, pArea->pCryptKey, byBuffer, 8 );
else
memcpy( pArea->pCryptKey, byBuffer, 8 );
fKeySet = TRUE;
}
}
return fKeySet;
}
/*
* Encrypt/Decrypt table
*/
static void hb_dbfTableCrypt( DBFAREAP pArea, PHB_ITEM pPasswd, BOOL fEncrypt )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTableCrypt(%p,%p,%d)", pArea, pPasswd, fEncrypt));
if( !pArea->fReadonly && !pArea->fShared &&
fEncrypt ? !pArea->fTableEncrypted && !pArea->fHasMemo :
pArea->fTableEncrypted )
{
ULONG ulRecords, ulRecNo;
if( SELF_RECCOUNT( ( AREAP ) pArea, &ulRecords ) == SUCCESS )
{
ERRCODE errCode = SUCCESS;
BYTE * pOldCryptKey, * pNewCryptKey;
pOldCryptKey = pArea->pCryptKey;
pArea->pCryptKey = NULL;
hb_dbfPasswordSet( pArea, pPasswd, FALSE );
pNewCryptKey = pArea->pCryptKey;
if( !fEncrypt && pNewCryptKey )
{
if( pOldCryptKey )
hb_xfree( pNewCryptKey );
else
pOldCryptKey = pNewCryptKey;
pNewCryptKey = NULL;
}
for( ulRecNo = 1; ulRecNo <= ulRecords; ++ulRecNo )
{
pArea->pCryptKey = pOldCryptKey;
errCode = SELF_GOTO( ( AREAP ) pArea, ulRecNo );
if( errCode != SUCCESS )
break;
if( !hb_dbfReadRecord( pArea ) )
{
errCode = FAILURE;
break;
}
pArea->pCryptKey = pNewCryptKey;
/* Buffer is hot? */
if( !pArea->fRecordChanged )
{
errCode = SELF_GOHOT( ( AREAP ) pArea );
if( errCode != SUCCESS )
break;
}
/* Force record encryption/decryption */
pArea->fEncrypted = fEncrypt;
/* Save encrypted record */
errCode = SELF_GOCOLD( ( AREAP ) pArea );
if( errCode != SUCCESS )
break;
}
pArea->pCryptKey = pNewCryptKey;
if( pOldCryptKey )
hb_xfree( pOldCryptKey );
if( errCode == SUCCESS )
{
pArea->fTableEncrypted = fEncrypt;
pArea->fUpdateHeader = TRUE;
SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
}
}
}
/*
* Unlock all records.
*/
static ERRCODE hb_dbfUnlockAllRecords( DBFAREAP pArea )
{
ERRCODE uiError = SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockAllRecords(%p, %p)", pArea ));
if( pArea->pLocksPos )
{
ULONG ulCount;
uiError = SELF_GOCOLD( ( AREAP ) pArea );
for( ulCount = 0; ulCount < pArea->ulNumLocksPos; ulCount++ )
SELF_RAWLOCK( ( AREAP ) pArea, REC_UNLOCK, pArea->pLocksPos[ ulCount ] );
hb_xfree( pArea->pLocksPos );
pArea->pLocksPos = NULL;
}
pArea->ulNumLocksPos = 0;
return uiError;
}
/*
* Unlock a records.
*/
static ERRCODE hb_dbfUnlockRecord( DBFAREAP pArea, ULONG ulRecNo )
{
ERRCODE uiError = SUCCESS;
ULONG ulCount, * pList;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockRecord(%p, %lu)", pArea, ulRecNo));
/* Search the locked record */
for( ulCount = 0; ulCount < pArea->ulNumLocksPos &&
pArea->pLocksPos[ ulCount ] != ulRecNo; ulCount++ ) {}
if( ulCount < pArea->ulNumLocksPos )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, REC_UNLOCK, ulRecNo );
if( pArea->ulNumLocksPos == 1 ) /* Delete the list */
{
hb_xfree( pArea->pLocksPos );
pArea->pLocksPos = NULL;
pArea->ulNumLocksPos = 0;
}
else /* Resize the list */
{
pList = pArea->pLocksPos + ulCount;
memmove( pList, pList + 1, ( pArea->ulNumLocksPos - ulCount - 1 ) *
sizeof( ULONG ) );
pArea->pLocksPos = ( ULONG * ) hb_xrealloc( pArea->pLocksPos,
( pArea->ulNumLocksPos - 1 ) *
sizeof( ULONG ) );
pArea->ulNumLocksPos --;
}
}
return uiError;
}
/*
* Lock a record.
*/
static ERRCODE hb_dbfLockRecord( DBFAREAP pArea, ULONG ulRecNo, BOOL * pResult,
BOOL bExclusive )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLockRecord(%p, %lu, %p, %i)", pArea, ulRecNo,
pResult, (int) bExclusive));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
if( pArea->fFLocked )
{
* pResult = TRUE;
return SUCCESS;
}
if( ulRecNo == 0 )
ulRecNo = pArea->ulRecNo;
if( bExclusive )
{
hb_dbfUnlockAllRecords( pArea );
}
else if( pArea->ulNumLocksPos > 0 )
{
ULONG ul;
for( ul = 0; ul < pArea->ulNumLocksPos; ul++ )
{
if( pArea->pLocksPos[ ul ] == ulRecNo )
{
* pResult = TRUE;
return SUCCESS;
}
}
}
if( SELF_RAWLOCK( ( AREAP ) pArea, REC_LOCK, ulRecNo ) == SUCCESS )
{
if( pArea->ulNumLocksPos == 0 ) /* Create the list */
{
pArea->pLocksPos = ( ULONG * ) hb_xgrab( sizeof( ULONG ) );
}
else /* Resize the list */
{
pArea->pLocksPos = ( ULONG * ) hb_xrealloc( pArea->pLocksPos,
( pArea->ulNumLocksPos + 1 ) *
sizeof( ULONG ) );
}
pArea->pLocksPos[ pArea->ulNumLocksPos++ ] = ulRecNo;
* pResult = TRUE;
if( ulRecNo == pArea->ulRecNo )
{
if( !pArea->fPositioned )
{
if( SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo ) != SUCCESS )
return FAILURE;
}
else if( !pArea->fRecordChanged )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
pArea->fValidBuffer = FALSE;
}
}
}
else
* pResult = FALSE;
return SUCCESS;
}
/*
* Lock a file.
*/
static ERRCODE hb_dbfLockFile( DBFAREAP pArea, BOOL * pResult )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLockFile(%p, %p)", pArea, pResult));
if( !pArea->fFLocked )
{
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
hb_dbfUnlockAllRecords( pArea );
SELF_RAWLOCK( ( AREAP ) pArea, FILE_LOCK, 0 );
* pResult = pArea->fFLocked;
if( !pArea->fPositioned )
{
SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo );
}
else if( !pArea->fRecordChanged )
{
SELF_GOCOLD( ( AREAP ) pArea );
pArea->fValidBuffer = FALSE;
}
}
else
* pResult = TRUE;
return SUCCESS;
}
/*
* Unlock a file.
*/
static ERRCODE hb_dbfUnlockFile( DBFAREAP pArea )
{
ERRCODE uiError = SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockFile(%p)", pArea));
if( pArea->fFLocked )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, FILE_UNLOCK, 0 );
}
return uiError;
}
/*
* Test if a record is locked.
*/
static BOOL hb_dbfIsLocked( DBFAREAP pArea, ULONG ulRecNo )
{
ULONG ulCount;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfIsLocked(%p)", pArea));
ulCount = pArea->ulNumLocksPos;
while( ulCount > 0 )
{
if( pArea->pLocksPos[ ulCount - 1 ] == ulRecNo )
return TRUE;
ulCount --;
}
return FALSE;
}
/*
* Return an array filled all locked records.
*/
static void hb_dbfGetLockArray( DBFAREAP pArea, PHB_ITEM pItem )
{
ULONG ulCount;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetLockArray(%p, %p)", pArea, pItem));
hb_arrayNew( pItem, pArea->ulNumLocksPos );
for( ulCount = 0; ulCount < pArea->ulNumLocksPos; ulCount++ )
{
hb_arraySetNL( pItem, ulCount + 1, pArea->pLocksPos[ ulCount ] );
}
}
/*
* Converts EDBF_* error code into EG_* one.
* This function is common for different DBF based RDD implementation
* so I don't make it static
*/
HB_EXPORT ERRCODE hb_dbfGetEGcode( ERRCODE errCode )
{
ERRCODE errEGcode;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetEGcode(%hu)", errCode));
switch( errCode )
{
case EDBF_OPEN_DBF:
errEGcode = EG_OPEN;
break;
case EDBF_CREATE_DBF:
errEGcode = EG_CREATE;
break;
case EDBF_READ:
errEGcode = EG_READ;
break;
case EDBF_WRITE:
errEGcode = EG_WRITE;
break;
case EDBF_CORRUPT:
errEGcode = EG_CORRUPTION;
break;
case EDBF_DATATYPE:
errEGcode = EG_DATATYPE;
break;
case EDBF_DATAWIDTH:
errEGcode = EG_DATAWIDTH;
break;
case EDBF_UNLOCKED:
errEGcode = EG_UNLOCKED;
break;
case EDBF_SHARED:
errEGcode = EG_SHARED;
break;
case EDBF_APPENDLOCK:
errEGcode = EG_APPENDLOCK;
break;
case EDBF_READONLY:
errEGcode = EG_READONLY;
break;
case EDBF_LOCK:
errEGcode = EG_LOCK;
break;
case EDBF_INVALIDKEY:
default:
errEGcode = EG_UNSUPPORTED;
break;
}
return errEGcode;
}
/*
* Converts memo block offset into ASCII.
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT ULONG hb_dbfGetMemoBlock( DBFAREAP pArea, USHORT uiIndex )
{
ULONG ulBlock= 0;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetMemoBlock(%p, %hu)", pArea, uiIndex));
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
ulBlock = HB_GET_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] );
}
else
{
USHORT uiCount;
BYTE bByte;
for( uiCount = 0; uiCount < 10; uiCount++ )
{
bByte = pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + uiCount ];
if( bByte >= '0' && bByte <= '9' )
{
ulBlock = ulBlock * 10 + ( bByte - '0' );
}
}
}
return ulBlock;
}
/*
* Converts ASCII data into memo block offset.
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT void hb_dbfPutMemoBlock( DBFAREAP pArea, USHORT uiIndex, ULONG ulBlock )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutMemoBlock(%p, %hu, %lu)", pArea, uiIndex, ulBlock));
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
HB_PUT_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], ulBlock );
}
else
{
SHORT iCount;
for( iCount = 9; iCount >= 0; iCount-- )
{
if( ulBlock > 0 )
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ( BYTE )( ulBlock % 10 ) + '0';
ulBlock /= 10;
}
else
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ' ';
}
}
}
}
/*
* Retrive memo field information stored in DBF file
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT ERRCODE hb_dbfGetMemoData( DBFAREAP pArea, USHORT uiIndex,
ULONG * pulBlock, ULONG * pulSize,
ULONG * pulType )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetMemoData(%p, %hu, %p, %p, %p)", pArea, uiIndex, pulBlock, pulSize, pulType));
*pulBlock = *pulSize = *pulType = 0;
if( uiIndex >= pArea->uiFieldCount ||
( pArea->lpFields[ uiIndex ].uiType != HB_FT_MEMO &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_IMAGE &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_BLOB &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_OLE ) )
return FAILURE;
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
*pulBlock = HB_GET_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] );
return SUCCESS;
}
else if( pArea->lpFields[ uiIndex ].uiLen == 10 )
{
ULONG ulValue;
if( pArea->bMemoType == DB_MEMO_SMT )
{
LPSMTFIELD pSMTFiled = ( LPSMTFIELD ) &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
ulValue = HB_GET_LE_UINT16( pSMTFiled->type );
if( ulValue != 0x2020 )
{
*pulType = ulValue;
*pulSize = HB_GET_LE_UINT32( pSMTFiled->length );
*pulBlock = HB_GET_LE_UINT32( pSMTFiled->block );
}
}
/*
* check for NULL fields created by Access, they have chr(0) set
* in the whole memo block address, [druzus]
*/
else if( pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] != 0 )
{
USHORT uiCount;
BYTE bByte;
ulValue = 0;
for( uiCount = 0; uiCount < 10; uiCount++ )
{
bByte = pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + uiCount ];
if( bByte >= '0' && bByte <= '9' )
ulValue = ulValue * 10 + ( bByte - '0' );
else if( bByte != ' ' || ulValue )
{
PHB_ITEM pError = hb_errNew();
ERRCODE uiError;
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANDEFAULT );
uiError = SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return uiError == E_DEFAULT ? SUCCESS : FAILURE;
}
}
*pulBlock = ulValue;
}
return SUCCESS;
}
return FAILURE;
}
/*
* Write memo data information into memo field in DBF file
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT ERRCODE hb_dbfSetMemoData( DBFAREAP pArea, USHORT uiIndex,
ULONG ulBlock, ULONG ulSize, ULONG ulType )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetMemoData(%p, %hu, %lu, %lu, %lu)", pArea, uiIndex, ulBlock, ulSize, ulType));
if( uiIndex >= pArea->uiFieldCount ||
( pArea->lpFields[ uiIndex ].uiType != HB_FT_MEMO &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_IMAGE &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_BLOB &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_OLE ) )
return FAILURE;
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
HB_PUT_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], ulBlock );
return SUCCESS;
}
else if( pArea->lpFields[ uiIndex ].uiLen == 10 )
{
if( pArea->bMemoType == DB_MEMO_SMT )
{
LPSMTFIELD pSMTFiled = ( LPSMTFIELD ) &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
HB_PUT_LE_UINT16( pSMTFiled->type, ulType );
HB_PUT_LE_UINT32( pSMTFiled->length, ulSize );
HB_PUT_LE_UINT32( pSMTFiled->block, ulBlock );
}
else
{
SHORT iCount;
for( iCount = 9; iCount >= 0; iCount-- )
{
if( ulBlock > 0 )
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ( BYTE )( ulBlock % 10 ) + '0';
ulBlock /= 10;
}
else
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ' ';
}
}
}
return SUCCESS;
}
return FAILURE;
}
/*
* Get information about locking schemes for additional files (MEMO, INDEX)
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT BOOL hb_dbfLockIdxGetData( BYTE bScheme, HB_FOFFSET *ulPos, HB_FOFFSET *ulPool )
{
switch( bScheme )
{
case DB_DBFLOCK_CLIP:
*ulPos = IDX_LOCKPOS_CLIP;
*ulPool = IDX_LOCKPOOL_CLIP;
break;
case DB_DBFLOCK_CL53:
*ulPos = IDX_LOCKPOS_CL53;
*ulPool = IDX_LOCKPOOL_CL53;
break;
case DB_DBFLOCK_CL53EXT:
*ulPos = IDX_LOCKPOS_CL53EXT;
*ulPool = IDX_LOCKPOOL_CL53EXT;
break;
case DB_DBFLOCK_VFP:
*ulPos = IDX_LOCKPOS_VFP;
*ulPool = IDX_LOCKPOOL_VFP;
break;
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
*ulPos = IDX_LOCKPOS_XHB64;
*ulPool = IDX_LOCKPOOL_XHB64;
break;
#endif
default:
return FALSE;
}
return TRUE;
}
/*
* Set lock using current locking schemes in additional files (MEMO, INDEX)
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_EXPORT BOOL hb_dbfLockIdxFile( HB_FHANDLE hFile, BYTE bScheme, USHORT usMode, HB_FOFFSET *pPoolPos )
{
HB_FOFFSET ulPos, ulPool, ulSize = 1;
BOOL fRet = FALSE, fWait;
if( !hb_dbfLockIdxGetData( bScheme, &ulPos, &ulPool ) )
{
return fRet;
}
do
{
switch( usMode & FL_MASK )
{
case FL_LOCK:
if( ulPool )
{
if( ( usMode & FLX_SHARED ) != 0 )
*pPoolPos = ( HB_FOFFSET ) ( hb_random_num() * ulPool ) + 1;
else
{
*pPoolPos = 0;
ulSize = ulPool + 1;
}
}
else
{
*pPoolPos = 0;
}
break;
case FL_UNLOCK:
if( ulPool )
{
if( ! *pPoolPos )
ulSize = ulPool + 1;
}
else
{
*pPoolPos = 0;
}
break;
default:
return FALSE;
}
fRet = hb_fsLockLarge( hFile, ulPos + *pPoolPos, ulSize, usMode );
fWait = ( !fRet && ( usMode & FLX_WAIT ) != 0 && ( usMode & FL_MASK ) == FL_LOCK );
/* TODO: call special error handler (LOCKHANDLER) here if fWait */
} while( fWait );
return fRet;
}
/*
* Get DBF locking parameters
*/
static ERRCODE hb_dbfLockData( DBFAREAP pArea,
HB_FOFFSET * ulPos, HB_FOFFSET * ulFlSize,
HB_FOFFSET * ulRlSize, int * iDir )
{
switch( pArea->bLockType )
{
case DB_DBFLOCK_CLIP:
*ulPos = DBF_LOCKPOS_CLIP;
*iDir = DBF_LOCKDIR_CLIP;
*ulFlSize = DBF_FLCKSIZE_CLIP;
*ulRlSize = DBF_RLCKSIZE_CLIP;
break;
case DB_DBFLOCK_CL53:
*ulPos = DBF_LOCKPOS_CL53;
*iDir = DBF_LOCKDIR_CL53;
*ulFlSize = DBF_FLCKSIZE_CL53;
*ulRlSize = DBF_RLCKSIZE_CL53;
break;
case DB_DBFLOCK_CL53EXT:
*ulPos = DBF_LOCKPOS_CL53EXT;
*iDir = DBF_LOCKDIR_CL53EXT;
*ulFlSize = DBF_FLCKSIZE_CL53EXT;
*ulRlSize = DBF_RLCKSIZE_CL53EXT;
break;
case DB_DBFLOCK_VFP:
if( pArea->fHasTags )
{
*ulPos = DBF_LOCKPOS_VFPX;
*iDir = DBF_LOCKDIR_VFPX;
*ulFlSize = DBF_FLCKSIZE_VFPX;
*ulRlSize = DBF_RLCKSIZE_VFPX;
}
else
{
*ulPos = DBF_LOCKPOS_VFP;
*iDir = DBF_LOCKDIR_VFP;
*ulFlSize = DBF_FLCKSIZE_VFP;
*ulRlSize = DBF_RLCKSIZE_VFP;
}
break;
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
*ulPos = DBF_LOCKPOS_XHB64;
*iDir = DBF_LOCKDIR_XHB64;
*ulFlSize = DBF_FLCKSIZE_XHB64;
*ulRlSize = DBF_RLCKSIZE_XHB64;
break;
#endif
default:
*ulPos = *ulFlSize = *ulRlSize = 0;
*iDir = 0;
return FAILURE;
}
return SUCCESS;
}
/*
* -- DBF METHODS --
*/
/*
* Determine logical beginning of file.
*/
static ERRCODE hb_dbfBof( DBFAREAP pArea, BOOL * pBof )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfBof(%p, %p)", pArea, pBof));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
* pBof = pArea->fBof;
return SUCCESS;
}
/*
* Determine logical end of file.
*/
static ERRCODE hb_dbfEof( DBFAREAP pArea, BOOL * pEof )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfEof(%p, %p)", pArea, pEof));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
* pEof = pArea->fEof;
return SUCCESS;
}
/*
* Determine outcome of the last search operation.
*/
static ERRCODE hb_dbfFound( DBFAREAP pArea, BOOL * pFound )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfFound(%p, %p)", pArea, pFound));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
* pFound = pArea->fFound;
return SUCCESS;
}
/*
* Position cursor at the last record.
*/
static ERRCODE hb_dbfGoBottom( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoBottom(%p)", pArea));
if( SELF_GOCOLD( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
pArea->fTop = FALSE;
pArea->fBottom = TRUE;
if( SELF_GOTO( ( AREAP ) pArea, pArea->ulRecCount ) != SUCCESS )
return FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, -1 );
}
/*
* Position cursor at a specific physical record.
*/
static ERRCODE hb_dbfGoTo( DBFAREAP pArea, ULONG ulRecNo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoTo(%p, %lu)", pArea, ulRecNo));
if( SELF_GOCOLD( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
if( pArea->lpdbPendingRel )
{
if( pArea->lpdbPendingRel->isScoped )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
else /* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
}
/* Update record count */
if( ulRecNo > pArea->ulRecCount && pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
if( ulRecNo <= pArea->ulRecCount && ulRecNo >= 1 )
{
pArea->ulRecNo = ulRecNo;
pArea->fBof = pArea->fEof = pArea->fValidBuffer = FALSE;
pArea->fPositioned = TRUE;
}
else /* Out of space */
{
pArea->ulRecNo = pArea->ulRecCount + 1;
pArea->fBof = pArea->fEof = pArea->fValidBuffer = TRUE;
pArea->fPositioned = pArea->fDeleted = pArea->fEncrypted = FALSE;
/* Clear record buffer */
hb_dbfSetBlankRecord( pArea, HB_BLANK_EOF );
}
pArea->fFound = FALSE;
/* Force relational movement in child WorkAreas */
if( pArea->lpdbRelations )
return SELF_SYNCCHILDREN( ( AREAP ) pArea );
else
return SUCCESS;
}
/*
* Position the cursor to a specific, physical identity.
*/
static ERRCODE hb_dbfGoToId( DBFAREAP pArea, PHB_ITEM pItem )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoToId(%p, %p)", pArea, pItem));
if( HB_IS_NUMERIC( pItem ) )
return SELF_GOTO( ( AREAP ) pArea, hb_itemGetNL( pItem ) );
else
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutSubCode( pError, EDBF_DATATYPE );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
}
/*
* Position cursor at the first record.
*/
static ERRCODE hb_dbfGoTop( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoTop(%p)", pArea));
pArea->fTop = TRUE;
pArea->fBottom = FALSE;
if( SELF_GOTO( ( AREAP ) pArea, 1 ) == FAILURE )
return FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, 1 );
}
/*
* Reposition cursor relative to current position.
*/
static ERRCODE hb_dbfSkip( DBFAREAP pArea, LONG lToSkip )
{
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSkip(%p, %ld)", pArea, lToSkip));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
pArea->fTop = pArea->fBottom = FALSE;
if( lToSkip == 0 || pArea->dbfi.itmCobExpr || pArea->dbfi.fFilter ||
hb_setGetDeleted() )
return SUPER_SKIP( ( AREAP ) pArea, lToSkip );
uiError = SELF_SKIPRAW( ( AREAP ) pArea, lToSkip );
/* TODO: remove this hack - it's not necessary if SKIPRAW works
as it should, Druzus */
/* Move first record and set Bof flag */
if( uiError == SUCCESS && pArea->fBof && lToSkip < 0 )
{
uiError = SELF_GOTOP( ( AREAP ) pArea );
pArea->fBof = TRUE;
}
/* Update Bof and Eof flags */
if( lToSkip < 0 )
pArea->fEof = FALSE;
else /* if( lToSkip > 0 ) */
pArea->fBof = FALSE;
return uiError;
}
/*
* Reposition cursor, regardless of filter.
*/
static ERRCODE hb_dbfSkipRaw( DBFAREAP pArea, LONG lToSkip )
{
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSkipRaw(%p, %ld)", pArea, lToSkip));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
if( lToSkip == 0 )
{
BOOL bBof, bEof;
/* Save flags */
bBof = pArea->fBof;
bEof = pArea->fEof;
uiError = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo );
/* Restore flags */
pArea->fBof = bBof;
pArea->fEof = bEof;
}
else if( lToSkip < 0 && ( ULONG ) ( -lToSkip ) >= pArea->ulRecNo )
{
uiError = SELF_GOTO( ( AREAP ) pArea, 1 );
pArea->fBof = TRUE;
}
else
{
uiError = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo + lToSkip );
}
return uiError;
}
/*
* Add a field to the WorkArea.
*/
static ERRCODE hb_dbfAddField( DBFAREAP pArea, LPDBFIELDINFO pFieldInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfAddField(%p, %p)", pArea, pFieldInfo));
if( pArea->bMemoType == DB_MEMO_SMT &&
( pFieldInfo->uiType == HB_FT_MEMO ||
pFieldInfo->uiType == HB_FT_IMAGE ||
pFieldInfo->uiType == HB_FT_BLOB ||
pFieldInfo->uiType == HB_FT_OLE ) )
pFieldInfo->uiLen = 10;
/* Update field offset */
pArea->pFieldOffset[ pArea->uiFieldCount ] = pArea->uiRecordLen;
pArea->uiRecordLen += pFieldInfo->uiLen;
return SUPER_ADDFIELD( ( AREAP ) pArea, pFieldInfo );
}
/*
* Append a record to the WorkArea.
*/
static ERRCODE hb_dbfAppend( DBFAREAP pArea, BOOL bUnLockAll )
{
ULONG ulNewRecord;
PHB_ITEM pError;
BOOL bLocked;
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfAppend(%p, %d)", pArea, (int) bUnLockAll));
if( SELF_GOCOLD( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_APPEND, 0, NULL ) )
return FAILURE;
}
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( pArea->lpdbPendingRel->isScoped )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
else /* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
}
if( pArea->fShared )
{
bLocked = FALSE;
if( SELF_RAWLOCK( ( AREAP ) pArea, APPEND_LOCK, 0 ) == SUCCESS )
{
/* Update RecCount */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
ulNewRecord = pArea->ulRecCount + 1;
if( pArea->fFLocked || hb_dbfIsLocked( pArea, ulNewRecord ) )
bLocked = TRUE;
else if( hb_dbfLockRecord( pArea, ulNewRecord, &bLocked, bUnLockAll ) != SUCCESS )
{
if( bLocked )
hb_dbfUnlockRecord( pArea, ulNewRecord );
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
return FAILURE;
}
}
if( !bLocked )
{
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
pError = hb_errNew();
hb_errPutGenCode( pError, EG_APPENDLOCK );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_APPENDLOCK ) );
hb_errPutSubCode( pError, EDBF_APPENDLOCK );
hb_errPutFlags( pError, EF_CANDEFAULT );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
}
/* Clear record buffer and update pArea */
hb_dbfSetBlankRecord( pArea, HB_BLANK_APPEND );
pArea->fValidBuffer = pArea->fUpdateHeader = pArea->fRecordChanged =
pArea->fAppend = pArea->fPositioned = TRUE;
pArea->ulRecCount ++;
pArea->ulRecNo = pArea->ulRecCount;
pArea->fDeleted = pArea->fBof = pArea->fEof = pArea->fFound = FALSE;
pArea->fEncrypted = pArea->pCryptKey != NULL && !pArea->fHasMemo;
if( pArea->fShared )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
return uiError;
}
return SUCCESS;
}
/*
* Delete a record.
*/
static ERRCODE hb_dbfDeleteRec( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDeleteRec(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_DELETE, 0, NULL ) )
return FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
if( !pArea->fPositioned )
return SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
pArea->pRecord[ 0 ] = '*';
pArea->fDeleted = TRUE;
return SUCCESS;
}
/*
* Determine deleted status for a record.
*/
static ERRCODE hb_dbfDeleted( DBFAREAP pArea, BOOL * pDeleted )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDeleted(%p, %p)", pArea, pDeleted));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
* pDeleted = pArea->fDeleted;
return SUCCESS;
}
/*
* Write data buffer to the data store.
*/
static ERRCODE hb_dbfFlush( DBFAREAP pArea )
{
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfFlush(%p)", pArea));
uiError = SELF_GOCOLD( ( AREAP ) pArea );
if( uiError == SUCCESS )
{
if( pArea->fUpdateHeader )
uiError = SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
if( hb_setGetHardCommit() && uiError == SUCCESS )
{
if( pArea->fDataFlush )
{
hb_fsCommit( pArea->hDataFile );
pArea->fDataFlush = FALSE;
}
if( pArea->fHasMemo && pArea->hMemoFile != FS_ERROR && pArea->fMemoFlush )
{
hb_fsCommit( pArea->hMemoFile );
pArea->fMemoFlush = FALSE;
}
}
return uiError;
}
/*
* Retrieve current record buffer
*/
static ERRCODE hb_dbfGetRec( DBFAREAP pArea, BYTE ** pBuffer )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetRec(%p, %p)", pArea, pBuffer));
if( pBuffer != NULL )
{
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
*pBuffer = pArea->pRecord;
}
else
{
if( pArea->pRecord[ 0 ] == 'D' || pArea->pRecord[ 0 ] == 'E' )
{
pArea->fEncrypted = TRUE;
pArea->pRecord[ 0 ] = pArea->pRecord[ 0 ] == 'D' ? '*' : ' ';
if( pArea->pCryptKey && pArea->bCryptType == DB_CRYPT_SIX )
{
hb_sxDeCrypt( pArea->pRecord + 1, pArea->pRecord + 1,
pArea->pCryptKey, pArea->uiRecordLen - 1 );
}
}
else
{
pArea->fEncrypted = FALSE;
}
}
return SUCCESS;
}
/*
* Obtain the current value of a field.
*/
static ERRCODE hb_dbfGetValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
LPFIELD pField;
BOOL fError;
PHB_ITEM pError;
char szBuffer[24];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetValue(%p, %hu, %p)", pArea, uiIndex, pItem));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
fError = FALSE;
uiIndex--;
pField = pArea->lpFields + uiIndex;
switch( pField->uiType )
{
case HB_FT_STRING:
#ifndef HB_CDP_SUPPORT_OFF
if( pArea->cdPage != hb_vmCDP() )
{
char * pVal = ( char * ) hb_xgrab( pField->uiLen + 1 );
memcpy( pVal, pArea->pRecord + pArea->pFieldOffset[ uiIndex ], pField->uiLen );
pVal[ pField->uiLen ] = '\0';
hb_cdpnTranslate( pVal, pArea->cdPage, hb_vmCDP(), pField->uiLen );
hb_itemPutCLPtr( pItem, pVal, pField->uiLen );
}
else
#endif
{
hb_itemPutCL( pItem, ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen );
}
break;
case HB_FT_LOGICAL:
hb_itemPutL( pItem, pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'T' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 't' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'Y' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'y' );
break;
case HB_FT_DATE:
if( pField->uiLen == 3 )
{
hb_itemPutDL( pItem, HB_GET_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else if( pField->uiLen == 4 )
{
hb_itemPutDL( pItem, HB_GET_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else
{
hb_itemPutDS( pItem, ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
}
break;
case HB_FT_TIME:
if( pField->uiLen == 4 )
{
hb_itemPutC( pItem, hb_timeStampStr( szBuffer,
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) ) );
break;
}
/* no break */
case HB_FT_MODTIME:
case HB_FT_DAYTIME:
hb_itemPutC( pItem, hb_dateTimeStampStr( szBuffer,
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ),
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + 4 ) ) );
break;
case HB_FT_INTEGER:
case HB_FT_CURRENCY:
case HB_FT_AUTOINC:
case HB_FT_ROWVER:
if( pField->uiDec )
{
double dValue;
int iLen;
switch( pField->uiLen )
{
case 1:
dValue = ( SCHAR ) pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
iLen = 4;
break;
case 2:
dValue = HB_GET_LE_INT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 6;
break;
case 3:
dValue = HB_GET_LE_INT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 10;
break;
case 4:
dValue = HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 10;
break;
case 8:
dValue = ( double ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 20;
break;
default:
dValue = 0;
iLen = 0;
fError = TRUE;
break;
}
hb_itemPutNDLen( pItem, hb_numDecConv( dValue, ( int ) pField->uiDec ),
iLen, ( int ) pField->uiDec );
}
else
{
switch( pField->uiLen )
{
case 1:
hb_itemPutNILen( pItem, ( SCHAR ) pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], 4 );
break;
case 2:
hb_itemPutNILen( pItem, ( int ) HB_GET_LE_INT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 6 );
break;
case 3:
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
break;
case 4:
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
break;
case 8:
#ifndef HB_LONG_LONG_OFF
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 20 );
#else
hb_itemPutNLen( pItem, ( double ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 20, 0 );
#endif
break;
default:
fError = TRUE;
break;
}
}
break;
case HB_FT_DOUBLE:
case HB_FT_CURDOUBLE:
hb_itemPutNDLen( pItem, HB_GET_LE_DOUBLE( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ),
20 - ( pField->uiDec > 0 ? ( pField->uiDec + 1 ) : 0 ),
( int ) pField->uiDec );
break;
case HB_FT_LONG:
case HB_FT_FLOAT:
/* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I remove this
* limit, Druzus
*/
/*
if( pField->uiLen > 20 )
fError = TRUE;
else
*/
{
HB_LONG lVal;
double dVal;
BOOL fDbl;
fDbl = hb_strnToNum( (const char *) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen, &lVal, &dVal );
if( pField->uiDec )
{
hb_itemPutNDLen( pItem, fDbl ? dVal : ( double ) lVal,
( int ) ( pField->uiLen - pField->uiDec - 1 ),
( int ) pField->uiDec );
}
else if( fDbl )
{
hb_itemPutNDLen( pItem, dVal, ( int ) pField->uiLen, 0 );
}
else
{
hb_itemPutNIntLen( pItem, lVal, ( int ) pField->uiLen );
}
}
break;
case HB_FT_ANY:
if( pField->uiLen == 3 )
{
hb_itemPutDL( pItem, hb_sxPtoD( ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else if( pField->uiLen == 4 )
{
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
}
else
{
fError = TRUE;
}
break;
case HB_FT_MEMO:
default:
fError = TRUE;
break;
}
/* Any error? */
if( fError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutOperation( pError, hb_dynsymName( ( PHB_DYNS ) pField->sym ) );
hb_errPutSubCode( pError, EDBF_DATATYPE );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_GET, uiIndex + 1, pItem ) )
return FAILURE;
}
return SUCCESS;
}
/*
* Obtain the length of a field value.
*/
static ERRCODE hb_dbfGetVarLen( DBFAREAP pArea, USHORT uiIndex, ULONG * pLength )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetVarLen(%p, %hu, %p)", pArea, uiIndex, pLength));
* pLength = pArea->lpFields[ uiIndex - 1 ].uiLen;
return SUCCESS;
}
/*
* Perform a write of WorkArea memory to the data store.
*/
static ERRCODE hb_dbfGoCold( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoCold(%p)", pArea));
if( pArea->fRecordChanged )
{
if( pArea->fTrigger )
{
/* The pending relation may move the record pointer so we should
disable them for trigger evaluation */
LPDBRELINFO lpdbPendingRel = pArea->lpdbPendingRel;
pArea->lpdbPendingRel = NULL;
hb_dbfTriggerDo( pArea, EVENT_UPDATE, 0, NULL );
/* Restore disabled pending relation */
pArea->lpdbPendingRel = lpdbPendingRel;
}
if( pArea->fModStamp )
hb_dbfUpdateStampFields( pArea );
/* Write current record */
if( ! hb_dbfWriteRecord( pArea ) )
return FAILURE;
if( pArea->fAppend )
{
pArea->fUpdateHeader = TRUE;
pArea->fAppend = FALSE;
}
/* Update header */
if( pArea->fShared && pArea->fUpdateHeader )
return SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
return SUCCESS;
}
/*
* Mark the WorkArea data buffer as hot.
*/
static ERRCODE hb_dbfGoHot( DBFAREAP pArea )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoHot(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
else if( pArea->fShared && !pArea->fFLocked &&
!hb_dbfIsLocked( pArea, pArea->ulRecNo ) )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_UNLOCKED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_UNLOCKED ) );
hb_errPutSubCode( pError, EDBF_UNLOCKED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
pArea->fRecordChanged = TRUE;
return SUCCESS;
}
/*
* Replace the current record.
*/
static ERRCODE hb_dbfPutRec( DBFAREAP pArea, BYTE * pBuffer )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutRec(%p, %p)", pArea, pBuffer));
if( pBuffer != NULL )
{
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
if( !pArea->fPositioned )
return SUCCESS;
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
/* Copy data to buffer */
memcpy( pArea->pRecord, pBuffer, pArea->uiRecordLen );
/*
* TODO: such operation should be forbidden
* maybe it will be good to return FAILURE when
* pArea->pRecord[ 0 ] != '*' && pArea->pRecord[ 0 ] != ' '
*/
if( pArea->pRecord[ 0 ] == 'D' || pArea->pRecord[ 0 ] == 'E' )
{
if( !pArea->fHasMemo )
pArea->fEncrypted = TRUE;
pArea->pRecord[ 0 ] = pArea->pRecord[ 0 ] == 'D' ? '*' : ' ';
}
pArea->fDeleted = pArea->pRecord[ 0 ] == '*';
}
else /* if( pArea->fRecordChanged ) */
{
BYTE * pRecord = pArea->pRecord;
USHORT uiWritten;
if( pArea->pCryptKey )
{
/* This enables record encryption in update operation */
if( pArea->bCryptType == DB_CRYPT_SIX && !pArea->fHasMemo )
pArea->fEncrypted = TRUE;
if( pArea->bCryptType == DB_CRYPT_SIX && pArea->fEncrypted )
{
pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pRecord[ 0 ] = pArea->fDeleted ? 'D' : 'E';
hb_sxEnCrypt( pArea->pRecord + 1, pRecord + 1, pArea->pCryptKey,
pArea->uiRecordLen - 1 );
}
}
/* Write data to file */
hb_fsSeekLarge( pArea->hDataFile, ( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) ( pArea->ulRecNo - 1 ) *
( HB_FOFFSET ) pArea->uiRecordLen, FS_SET );
uiWritten = hb_fsWrite( pArea->hDataFile, pRecord, pArea->uiRecordLen );
if( pRecord != pArea->pRecord )
hb_xfree( pRecord );
if( uiWritten != pArea->uiRecordLen )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, EG_WRITE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_WRITE ) );
hb_errPutSubCode( pError, EDBF_WRITE );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, pArea->szDataFileName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
}
return SUCCESS;
}
/*
* Assign a value to a field.
*/
static ERRCODE hb_dbfPutValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
USHORT uiSize;
LPFIELD pField;
/* this buffer is for date and number conversion,
* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I removed this
* limit [druzus]
*/
char szBuffer[ 256 ];
PHB_ITEM pError;
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutValue(%p, %hu, %p)", pArea, uiIndex, pItem));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PUT, uiIndex, pItem ) )
return FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
if( !pArea->fPositioned )
return SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
uiError = SUCCESS;
uiIndex--;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_MEMO ||
pField->uiType == HB_FT_IMAGE ||
pField->uiType == HB_FT_BLOB ||
pField->uiType == HB_FT_OLE )
uiError = EDBF_DATATYPE;
else
{
if( HB_IS_MEMO( pItem ) || HB_IS_STRING( pItem ) )
{
if( pField->uiType == HB_FT_STRING )
{
uiSize = ( USHORT ) hb_itemGetCLen( pItem );
if( uiSize > pField->uiLen )
uiSize = pField->uiLen;
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetCPtr( pItem ), uiSize );
#ifndef HB_CDP_SUPPORT_OFF
hb_cdpnTranslate( (char *) pArea->pRecord + pArea->pFieldOffset[ uiIndex ], hb_vmCDP(), pArea->cdPage, uiSize );
#endif
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + uiSize,
' ', pField->uiLen - uiSize );
}
else if( pField->uiType == HB_FT_DAYTIME )
{
LONG lJulian, lMillisec;
BYTE * ptr = pArea->pRecord + pArea->pFieldOffset[ uiIndex ];
hb_dateTimeStampStrGet( hb_itemGetCPtr( pItem ), &lJulian, &lMillisec );
HB_PUT_LE_UINT32( ptr, lJulian );
ptr += 4;
HB_PUT_LE_UINT32( ptr, lMillisec );
}
else
uiError = EDBF_DATATYPE;
}
/* Must precede HB_IS_NUMERIC() because a DATE is also a NUMERIC. (xHarbour) */
else if( HB_IS_DATE( pItem ) )
{
if( pField->uiType == HB_FT_DATE )
{
if( pField->uiLen == 3 )
{
HB_PUT_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else if( pField->uiLen == 4 )
{
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else
{
hb_itemGetDS( pItem, szBuffer );
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], szBuffer, 8 );
}
}
else if( pField->uiType == HB_FT_ANY && pField->uiLen == 3 )
{
hb_sxDtoP( ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else
uiError = EDBF_DATATYPE;
}
else if( HB_IS_NUMBER( pItem ) )
{
if( pField->uiType == HB_FT_LONG || pField->uiType == HB_FT_FLOAT )
{
if( hb_itemStrBuf( szBuffer, pItem, pField->uiLen, pField->uiDec ) )
{
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
szBuffer, pField->uiLen );
}
else
{
uiError = EDBF_DATAWIDTH;
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
'*', pField->uiLen );
}
}
else if( pField->uiType == HB_FT_INTEGER )
{
HB_LONG lVal;
double dVal;
int iSize;
if( pField->uiDec )
{
dVal = hb_numDecConv( hb_itemGetND( pItem ), - ( int ) pField->uiDec );
lVal = ( HB_LONG ) dVal;
if( ! HB_DBL_LIM_INT64( dVal ) )
iSize = 99;
else
#ifndef HB_LONG_LONG_OFF
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
#else
iSize = HB_DBL_LIM_INT8( dVal ) ? 1 :
( HB_DBL_LIM_INT16( dVal ) ? 2 :
( HB_DBL_LIM_INT24( dVal ) ? 3 :
( HB_DBL_LIM_INT32( dVal ) ? 4 : 8 ) ) );
#endif
}
else if( HB_IS_DOUBLE( pItem ) )
{
dVal = hb_itemGetND( pItem );
lVal = ( HB_LONG ) dVal;
if( ! HB_DBL_LIM_INT64( dVal ) )
iSize = 99;
else
#ifndef HB_LONG_LONG_OFF
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
#else
iSize = HB_DBL_LIM_INT8( dVal ) ? 1 :
( HB_DBL_LIM_INT16( dVal ) ? 2 :
( HB_DBL_LIM_INT24( dVal ) ? 3 :
( HB_DBL_LIM_INT32( dVal ) ? 4 : 8 ) ) );
#endif
}
else
{
lVal = ( HB_LONG ) hb_itemGetNInt( pItem );
#ifdef HB_LONG_LONG_OFF
dVal = ( double ) lVal;
#endif
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
}
if( iSize > pField->uiLen )
{
uiError = EDBF_DATAWIDTH;
}
else
{
switch( pField->uiLen )
{
case 1:
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] = ( signed char ) lVal;
break;
case 2:
HB_PUT_LE_UINT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT16 ) lVal );
break;
case 3:
HB_PUT_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
break;
case 4:
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
break;
case 8:
#ifndef HB_LONG_LONG_OFF
HB_PUT_LE_UINT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT64 ) lVal );
#else
HB_PUT_LE_UINT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], dVal );
#endif
break;
default:
uiError = EDBF_DATATYPE;
break;
}
}
}
else if( pField->uiType == HB_FT_DOUBLE )
{
HB_PUT_LE_DOUBLE( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], hb_itemGetND( pItem ) );
}
else if( pField->uiType == HB_FT_ANY && pField->uiLen == 4 )
{
HB_LONG lVal = hb_itemGetNInt( pItem );
if( HB_IS_DOUBLE( pItem ) ?
HB_DBL_LIM_INT32( hb_itemGetND( pItem ) ) :
HB_LIM_INT32( lVal ) )
{
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
}
else
{
uiError = EDBF_DATAWIDTH;
}
}
else
{
uiError = EDBF_DATATYPE;
}
}
else if( HB_IS_LOGICAL( pItem ) )
{
if( pField->uiType == HB_FT_LOGICAL )
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] = hb_itemGetL( pItem ) ? 'T' : 'F';
else
uiError = EDBF_DATATYPE;
}
else
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != SUCCESS )
{
pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutOperation( pError, hb_dynsymName( ( PHB_DYNS ) pField->sym ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
uiError = SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return uiError == E_DEFAULT ? SUCCESS : FAILURE;
}
return SUCCESS;
}
/*
* Undelete the current record.
*/
static ERRCODE hb_dbfRecall( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecall(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_RECALL, 0, NULL ) )
return FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
if( !pArea->fPositioned )
return SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
pArea->pRecord[ 0 ] = ' ';
pArea->fDeleted = FALSE;
return SUCCESS;
}
/*
* Obtain number of records in WorkArea.
*/
static ERRCODE hb_dbfRecCount( DBFAREAP pArea, ULONG * pRecCount )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecCount(%p, %p)", pArea, pRecCount));
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
* pRecCount = pArea->ulRecCount;
return SUCCESS;
}
/*
* Obtain physical row number at current WorkArea cursor position.
*/
static ERRCODE hb_dbfRecNo( DBFAREAP pArea, ULONG * ulRecNo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecNo(%p, %p)", pArea, ulRecNo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
*ulRecNo = pArea->ulRecNo;
return SUCCESS;
}
/*
* Obtain physical row ID at current WorkArea cursor position.
*/
static ERRCODE hb_dbfRecId( DBFAREAP pArea, PHB_ITEM pRecNo )
{
ERRCODE errCode;
ULONG ulRecNo;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecId(%p, %p)", pArea, pRecNo));
errCode = SELF_RECNO( ( AREAP ) pArea, &ulRecNo );
#ifdef HB_C52_STRICT
/* this is for strict Clipper compatibility but IMHO Clipper should not
do that and always set fixed size independent to the record number */
if( ulRecNo < 10000000 )
{
hb_itemPutNLLen( pRecNo, ulRecNo, 7 );
}
else
{
hb_itemPutNLLen( pRecNo, ulRecNo, 10 );
}
#else
hb_itemPutNInt( pRecNo, ulRecNo );
#endif
return errCode;
}
/*
* Establish the extent of the array of fields for a WorkArea.
*/
static ERRCODE hb_dbfSetFieldExtent( DBFAREAP pArea, USHORT uiFieldExtent )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetFieldExtent(%p, %hu)", pArea, uiFieldExtent));
if( SUPER_SETFIELDEXTENT( ( AREAP ) pArea, uiFieldExtent ) == FAILURE )
return FAILURE;
/* Alloc field offsets array */
if( uiFieldExtent )
{
pArea->pFieldOffset = ( USHORT * ) hb_xgrab( uiFieldExtent * sizeof( USHORT ) );
memset( pArea->pFieldOffset, 0, uiFieldExtent * sizeof( USHORT ) );
}
return SUCCESS;
}
/*
* Close the table in the WorkArea.
*/
static ERRCODE hb_dbfClose( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfClose(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PRECLOSE, 0, NULL ) )
return FAILURE;
}
/* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
/* Update record and unlock records */
if( pArea->hDataFile != FS_ERROR )
{
/* update buffers */
SELF_GOCOLD( ( AREAP ) pArea );
/* Unlock all records */
SELF_UNLOCK( ( AREAP ) pArea, NULL );
/* Update header */
if( pArea->fUpdateHeader )
SELF_WRITEDBHEADER( ( AREAP ) pArea );
/* It's not Clipper compatible but it reduces the problem with
byggy Windows network setting */
if( hb_setGetHardCommit() )
SELF_FLUSH( ( AREAP ) pArea );
}
SUPER_CLOSE( ( AREAP ) pArea );
if( pArea->hDataFile != FS_ERROR )
{
hb_fsClose( pArea->hDataFile );
pArea->hDataFile = FS_ERROR;
}
/* Close the memo file */
if( pArea->fHasMemo && pArea->hMemoFile != FS_ERROR )
{
hb_fsClose( pArea->hMemoFile );
pArea->hMemoFile = FS_ERROR;
}
/* Free field offset array */
if( pArea->pFieldOffset )
{
hb_xfree( pArea->pFieldOffset );
pArea->pFieldOffset = NULL;
}
/* Free buffer */
if( pArea->pRecord )
{
hb_xfree( pArea->pRecord );
pArea->pRecord = NULL;
}
/* Free encryption password key */
if( pArea->pCryptKey )
{
memset( pArea->pCryptKey, '\0', 8 );
hb_xfree( pArea->pCryptKey );
pArea->pCryptKey = NULL;
}
/* Free all filenames */
if( pArea->szDataFileName )
{
hb_xfree( pArea->szDataFileName );
pArea->szDataFileName = NULL;
}
if( pArea->szMemoFileName )
{
hb_xfree( pArea->szMemoFileName );
pArea->szMemoFileName = NULL;
}
if( pArea->fTrigger )
{
hb_dbfTriggerDo( pArea, EVENT_POSTCLOSE, 0, NULL );
pArea->fTrigger = FALSE;
}
return SUCCESS;
}
/*
* Create a data store in the specified WorkArea.
*/
static ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
{
ERRCODE errCode = SUCCESS;
USHORT uiSize, uiCount;
BOOL fRetry, fError, fRawBlob;
DBFFIELD * pBuffer, *pThisField;
PHB_FNAME pFileName;
PHB_ITEM pItem = NULL, pError;
BYTE szFileName[ _POSIX_PATH_MAX + 1 ];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCreate(%p, %p)", pArea, pCreateInfo));
pArea->lpdbOpenInfo = pCreateInfo;
pFileName = hb_fsFNameSplit( ( char * ) pCreateInfo->abName );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
pItem = hb_itemPutC( pItem, NULL );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLEEXT, pItem ) != SUCCESS )
{
hb_itemRelease( pItem );
hb_xfree( pFileName );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pFileName->szExtension = hb_itemGetCPtr( pItem );
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
}
else
{
hb_strncpy( ( char * ) szFileName, ( char * ) pCreateInfo->abName, sizeof( szFileName ) - 1 );
}
hb_xfree( pFileName );
pItem = hb_itemPutL( pItem, FALSE );
fRawBlob = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_BLOB_SUPPORT, pCreateInfo->ulConnection, pItem ) == SUCCESS &&
hb_itemGetL( pItem );
if( pArea->bTableType == 0 )
{
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLETYPE, pItem ) != SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pArea->bTableType = hb_itemGetNI( pItem );
}
if( pArea->bLockType == 0 )
{
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_LOCKSCHEME, pItem ) != SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pArea->bLockType = hb_itemGetNI( pItem );
if( pArea->bLockType == 0 )
{
pArea->bLockType = DB_DBFLOCK_CLIP;
}
}
if( pArea->bTableType == DB_DBF_VFP && !fRawBlob )
{
pArea->bMemoType = DB_MEMO_FPT;
}
else if( pArea->bMemoType == 0 )
{
/* get memo type */
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_MEMOTYPE, pItem ) != SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pArea->bMemoType = ( BYTE ) hb_itemGetNI( pItem );
}
pArea->bCryptType = DB_CRYPT_NONE;
if( pItem )
hb_itemRelease( pItem );
if( pArea->uiFieldCount * sizeof( DBFFIELD ) + sizeof( DBFHEADER ) +
( pArea->bTableType == DB_DBF_VFP ? 1 : 2 ) > UINT16_MAX )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATAWIDTH );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
if( !fRawBlob )
{
pError = NULL;
/* Try create */
do
{
pArea->hDataFile = hb_fsExtOpen( szFileName, NULL,
FO_READWRITE | FO_EXCLUSIVE | FXO_TRUNCATE |
FXO_DEFAULTS | FXO_SHARELOCK | FXO_COPYNAME,
NULL, pError );
if( pArea->hDataFile == FS_ERROR )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_CREATE_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) szFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
hb_errPutOsCode( pError, hb_fsError() );
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
}
if( pArea->hDataFile == FS_ERROR )
{
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
}
pArea->szDataFileName = hb_strdup( ( char * ) szFileName );
uiSize = pArea->uiFieldCount * sizeof( DBFFIELD );
if( pArea->uiFieldCount )
{
pBuffer = ( DBFFIELD * ) hb_xgrab( uiSize );
memset( pBuffer, 0, uiSize );
}
else
{
pBuffer = NULL;
}
pThisField = pBuffer;
pArea->fHasMemo = fError = FALSE;
/* Size for deleted flag */
pArea->uiRecordLen = 1;
for( uiCount = 0; uiCount < pArea->uiFieldCount; uiCount++ )
{
LPFIELD pField = pArea->lpFields + uiCount;
hb_strncpy( ( char * ) pThisField->bName,
hb_dynsymName( ( PHB_DYNS ) pField->sym ), sizeof( pThisField->bName ) - 1 );
pArea->pFieldOffset[ uiCount ] = pArea->uiRecordLen;
/* field offset */
if( pArea->bTableType == DB_DBF_VFP )
HB_PUT_LE_UINT16( pThisField->bReserved1, pArea->uiRecordLen );
switch( pField->uiType )
{
case HB_FT_STRING:
pThisField->bType = 'C';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) ( pField->uiLen >> 8 );
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_LOGICAL:
pThisField->bType = 'L';
pThisField->bLen = 1;
pArea->uiRecordLen++;
break;
case HB_FT_MEMO:
pThisField->bType = 'M';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_BLOB:
pThisField->bType = 'W';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_IMAGE:
pThisField->bType = 'P';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_OLE:
pThisField->bType = 'G';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_ANY:
pThisField->bType = 'V';
if( pField->uiLen < 3 || pField->uiLen == 5 )
{
pField->uiLen = 6;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) ( pField->uiLen >> 8 );
pArea->uiRecordLen += pField->uiLen;
if( pThisField->bLen >= 6 )
{
pArea->uiMemoVersion = DB_MEMOVER_SIX;
pArea->fHasMemo = TRUE;
}
/*
if( pArea->bTableType == DB_DBF_VFP )
fError = TRUE;
*/
break;
case HB_FT_DATE:
pThisField->bType = 'D';
if( pField->uiLen != 3 && pField->uiLen != 4 )
{
pField->uiLen = pThisField->bLen = 8;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_LONG:
pThisField->bType = 'N';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_FLOAT:
pThisField->bType = 'F';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_DOUBLE:
case HB_FT_CURDOUBLE:
pThisField->bType = 'B';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_INTEGER:
case HB_FT_CURRENCY:
pThisField->bType = ( pArea->bTableType == DB_DBF_VFP &&
pField->uiLen == 8 && pField->uiDec == 4 ) ?
'Y' : 'I';
if( ( pField->uiLen > 4 && pField->uiLen != 8 ) ||
pField->uiLen == 0 )
{
pField->uiLen = 4;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_TIME:
pThisField->bType = 'T';
pField->uiLen = 4;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_DAYTIME:
pThisField->bType = pArea->bTableType == DB_DBF_VFP ? 'T' : '@';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_MODTIME:
pThisField->bType = '=';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
pArea->fModStamp = TRUE;
break;
case HB_FT_ROWVER:
pThisField->bType = '^';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
HB_PUT_LE_UINT32( pThisField->bCounter, 1 );
pThisField->bStep = 1;
pArea->uiRecordLen += pField->uiLen;
pArea->fModStamp = TRUE;
break;
case HB_FT_AUTOINC:
pThisField->bType = '+';
pField->uiLen = 4;
pThisField->bLen = ( BYTE ) pField->uiLen;
HB_PUT_LE_UINT32( pThisField->bCounter, 1 );
pThisField->bStep = 1;
pArea->uiRecordLen += pField->uiLen;
pArea->fAutoInc = TRUE;
break;
default:
fError = TRUE;
}
if( fError )
{
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pThisField++;
}
pArea->fShared = FALSE; /* pCreateInfo->fShared; */
pArea->fReadonly = FALSE; /* pCreateInfo->fReadonly */
pArea->ulRecCount = 0;
pArea->uiHeaderLen = sizeof( DBFHEADER ) + uiSize +
( pArea->bTableType == DB_DBF_VFP ? 1 : 2 );
if( fRawBlob )
{
pArea->fHasMemo = TRUE;
}
if( !pArea->fHasMemo )
{
pArea->bMemoType = DB_MEMO_NONE;
}
pArea->uiMemoBlockSize = 0;
#ifndef HB_CDP_SUPPORT_OFF
if( pCreateInfo->cdpId )
{
pArea->cdPage = hb_cdpFind( (char *) pCreateInfo->cdpId );
if( !pArea->cdPage )
pArea->cdPage = hb_vmCDP();
}
else
pArea->cdPage = hb_vmCDP();
#endif
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGPASSWORD,
pCreateInfo->ulConnection, pItem ) == SUCCESS )
{
if( hb_dbfPasswordSet( pArea, pItem, FALSE ) )
pArea->fTableEncrypted = TRUE;
}
else
{
hb_itemClear( pItem );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PASSWORD,
pCreateInfo->ulConnection, pItem ) == SUCCESS )
{
if( hb_dbfPasswordSet( pArea, pItem, FALSE ) )
pArea->fTableEncrypted = TRUE;
}
}
hb_itemRelease( pItem );
if( !fRawBlob )
{
/* Force write new header */
pArea->fUpdateHeader = TRUE;
/* Write header */
errCode = SELF_WRITEDBHEADER( ( AREAP ) pArea );
if( errCode != SUCCESS )
{
if( pBuffer )
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Write fields and eof mark */
if( hb_fsWrite( pArea->hDataFile, ( BYTE * ) pBuffer, uiSize ) != uiSize ||
( pArea->bTableType == DB_DBF_VFP ?
hb_fsWrite( pArea->hDataFile, ( BYTE * ) "\r\032", 2 ) != 2 :
hb_fsWrite( pArea->hDataFile, ( BYTE * ) "\r\0\032", 3 ) != 3 ) )
{
/* TODO: add RT error */
if( pBuffer )
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pArea->fDataFlush = TRUE;
if( pBuffer )
hb_xfree( pBuffer );
}
/* Create memo file */
if( pArea->fHasMemo )
{
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
pFileName->szExtension = NULL;
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
hb_xfree( pFileName );
pCreateInfo->abName = szFileName;
errCode = SELF_CREATEMEMFILE( ( AREAP ) pArea, pCreateInfo );
}
/* If successful call SUPER_CREATE to finish system jobs */
if( errCode == SUCCESS )
{
errCode = SUPER_CREATE( ( AREAP ) pArea, pCreateInfo );
}
if( errCode != SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Alloc buffer */
pArea->pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pArea->fValidBuffer = FALSE;
/* Update the number of record for corrupted headers */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
pArea->lpdbOpenInfo = NULL;
/* Position cursor at the first record */
return SELF_GOTOP( ( AREAP ) pArea );
}
/*
* Retrieve information about the current driver.
*/
static ERRCODE hb_dbfInfo( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
ERRCODE errCode = SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfInfo(%p, %hu, %p)", pArea, uiIndex, pItem));
switch( uiIndex )
{
case DBI_ISDBF:
case DBI_CANPUTREC:
hb_itemPutL( pItem, TRUE );
break;
case DBI_GETHEADERSIZE:
hb_itemPutNL( pItem, pArea->uiHeaderLen );
break;
case DBI_LASTUPDATE:
hb_itemPutD( pItem, 1900 + pArea->dbfHeader.bYear,
pArea->dbfHeader.bMonth,
pArea->dbfHeader.bDay );
break;
case DBI_GETRECSIZE:
hb_itemPutNL( pItem, pArea->uiRecordLen );
break;
case DBI_GETLOCKARRAY:
hb_dbfGetLockArray( pArea, pItem );
break;
case DBI_TABLEEXT:
hb_itemClear( pItem );
return SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TABLEEXT, 0, pItem );
case DBI_FULLPATH:
hb_itemPutC( pItem, pArea->szDataFileName);
break;
case DBI_MEMOTYPE:
hb_itemPutNI( pItem, DB_MEMO_NONE );
break;
case DBI_TABLETYPE:
if( pArea->hDataFile == FS_ERROR )
{
hb_itemClear( pItem );
return SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TABLETYPE, 0, pItem );
}
hb_itemPutNI( pItem, pArea->bTableType );
break;
case DBI_FILEHANDLE:
hb_itemPutNL( pItem, ( LONG ) pArea->hDataFile );
break;
case DBI_MEMOHANDLE:
hb_itemPutNL( pItem, ( LONG ) pArea->hMemoFile );
break;
case DBI_SHARED:
{
BOOL fShared = pArea->fShared;
if( HB_IS_LOGICAL( pItem ) )
{
pArea->fShared = hb_itemGetL( pItem );
}
hb_itemPutL( pItem, fShared );
break;
}
case DBI_ISFLOCK:
hb_itemPutL( pItem, pArea->fFLocked );
break;
case DBI_ISREADONLY:
hb_itemPutL( pItem, pArea->fReadonly );
break;
case DBI_VALIDBUFFER:
hb_itemPutL( pItem, pArea->fValidBuffer );
break;
case DBI_POSITIONED:
hb_itemPutL( pItem, pArea->fPositioned );
break;
case DBI_ISENCRYPTED:
hb_itemPutL( pItem, pArea->fTableEncrypted );
break;
case DBI_DECRYPT:
hb_dbfTableCrypt( pArea, pItem, FALSE );
hb_itemPutL( pItem, !pArea->fTableEncrypted );
break;
case DBI_ENCRYPT:
hb_dbfTableCrypt( pArea, pItem, TRUE );
hb_itemPutL( pItem, pArea->fTableEncrypted );
break;
case DBI_LOCKCOUNT:
hb_itemPutNL( pItem, pArea->ulNumLocksPos );
break;
case DBI_LOCKOFFSET:
{
HB_FOFFSET ulPos, ulFlSize, ulRlSize;
int iDir;
hb_dbfLockData( pArea, &ulPos, &ulFlSize, &ulRlSize, &iDir );
hb_itemPutNInt( pItem, ulPos );
break;
}
case DBI_LOCKSCHEME:
{
int iScheme = hb_itemGetNI( pItem );
if( pArea->bLockType )
{
hb_itemPutNI( pItem, pArea->bLockType );
}
else
{
hb_itemClear( pItem );
errCode = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_LOCKSCHEME, 0, pItem );
}
switch( iScheme )
{
case DB_DBFLOCK_CLIP:
case DB_DBFLOCK_CL53:
case DB_DBFLOCK_CL53EXT:
case DB_DBFLOCK_VFP:
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
#endif
pArea->bLockType = ( BYTE ) iScheme;
}
break;
}
case DBI_ROLLBACK:
if( pArea->fRecordChanged )
{
if( pArea->fAppend )
{
hb_dbfSetBlankRecord( pArea, HB_BLANK_ROLLBACK );
pArea->fDeleted = FALSE;
}
else
{
pArea->fRecordChanged = pArea->fValidBuffer = FALSE;
}
}
break;
case DBI_PASSWORD:
hb_dbfPasswordSet( pArea, pItem, FALSE );
break;
case DBI_TRIGGER:
if( HB_IS_LOGICAL( pItem ) )
pArea->fTrigger = pArea->pTriggerSym && hb_itemGetL( pItem );
else
{
PHB_DYNS pTriggerSym = pArea->pTriggerSym;
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
hb_itemPutC( pItem, pTriggerSym ? hb_dynsymName( pTriggerSym ) : NULL );
}
break;
case DBI_OPENINFO:
hb_itemPutPtr( pItem, pArea->lpdbOpenInfo );
break;
case DBI_DIRTYREAD:
{
BOOL fDirty = HB_DIRTYREAD( pArea );
if( HB_IS_LOGICAL( pItem ) )
pArea->uiDirtyRead = hb_itemGetL( pItem ) ?
HB_IDXREAD_DIRTY : HB_IDXREAD_CLEAN;
else if( !HB_IS_NIL( pItem ) )
pArea->uiDirtyRead = HB_IDXREAD_DEFAULT;
hb_itemPutL( pItem, fDirty );
break;
}
case DBI_DB_VERSION:
case DBI_RDD_VERSION:
{
char szBuf[ 64 ];
int iSub = hb_itemGetNI( pItem );
if( iSub == 1 )
snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s)", 0, 1, "DBF" );
else if( iSub == 2 )
snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, "DBF", pArea->rddID );
/*
snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, pArea->pRddNode->szName, pArea->rddID );
*/
else
snprintf( szBuf, sizeof( szBuf ), "%d.%d", 0, 1 );
hb_itemPutC( pItem, szBuf );
break;
}
default:
return SUPER_INFO( ( AREAP ) pArea, uiIndex, pItem );
}
return errCode;
}
/*
* Retrieve information about a raw
*/
static ERRCODE hb_dbfRecInfo( DBFAREAP pArea, PHB_ITEM pRecID, USHORT uiInfoType, PHB_ITEM pInfo )
{
ULONG ulRecNo = hb_itemGetNL( pRecID ), ulPrevRec = 0;
ERRCODE errResult = SUCCESS;
BOOL bDeleted;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecInfo(%p, %p, %hu, %p)", pArea, pRecID, uiInfoType, pInfo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
if( ulRecNo == 0 )
{
ulRecNo = pArea->ulRecNo;
}
else if( ulRecNo != pArea->ulRecNo )
{
switch( uiInfoType )
{
case DBRI_DELETED:
case DBRI_ENCRYPTED:
case DBRI_RAWRECORD:
case DBRI_RAWMEMOS:
case DBRI_RAWDATA:
ulPrevRec = pArea->ulRecNo;
errResult = SELF_GOTO( ( AREAP ) pArea, ulRecNo );
if( errResult != SUCCESS )
return errResult;
break;
}
}
switch( uiInfoType )
{
case DBRI_DELETED:
errResult = SELF_DELETED( ( AREAP ) pArea, &bDeleted );
if( errResult == SUCCESS )
hb_itemPutL( pInfo, bDeleted );
break;
case DBRI_LOCKED:
/* Clipper also checks only fShared and RLOCK and ignore FLOCK */
hb_itemPutL( pInfo, !pArea->fShared || /* pArea->fFLocked || */
hb_dbfIsLocked( pArea, ulRecNo ) );
break;
case DBRI_RECSIZE:
hb_itemPutNL( pInfo, pArea->uiRecordLen );
break;
case DBRI_RECNO:
hb_itemPutNL( pInfo, ulRecNo );
break;
case DBRI_UPDATED:
hb_itemPutL( pInfo, ulRecNo == pArea->ulRecNo && pArea->fRecordChanged );
break;
case DBRI_ENCRYPTED:
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
errResult = FAILURE;
else
hb_itemPutL( pInfo, pArea->fEncrypted );
break;
case DBRI_RAWRECORD:
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
errResult = FAILURE;
else
hb_itemPutCL( pInfo, ( char * ) pArea->pRecord, pArea->uiRecordLen );
break;
case DBRI_RAWMEMOS:
case DBRI_RAWDATA:
{
USHORT uiFields;
BYTE *pResult;
ULONG ulLength, ulLen;
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
{
errResult = FAILURE;
break;
}
ulLength = uiInfoType == DBRI_RAWDATA ? pArea->uiRecordLen : 0;
pResult = ( BYTE * ) hb_xgrab( ulLength + 1 );
if( ulLength )
{
memcpy( pResult, pArea->pRecord, ulLength );
}
if( pArea->fHasMemo )
{
for( uiFields = 0; uiFields < pArea->uiFieldCount; uiFields++ )
{
if( pArea->lpFields[ uiFields ].uiType == HB_FT_MEMO ||
pArea->lpFields[ uiFields ].uiType == HB_FT_IMAGE ||
pArea->lpFields[ uiFields ].uiType == HB_FT_BLOB ||
pArea->lpFields[ uiFields ].uiType == HB_FT_OLE )
{
errResult = SELF_GETVALUE( ( AREAP ) pArea, uiFields + 1, pInfo );
if( errResult != SUCCESS )
break;
ulLen = hb_itemGetCLen( pInfo );
if( ulLen > 0 )
{
pResult = ( BYTE * ) hb_xrealloc( pResult, ulLength + ulLen + 1 );
memcpy( pResult + ulLength, hb_itemGetCPtr( pInfo ), ulLen );
ulLength += ulLen;
}
}
}
}
hb_itemPutCLPtr( pInfo, ( char * ) pResult, ulLength );
break;
}
default:
errResult = SUPER_RECINFO( ( AREAP ) pArea, pRecID, uiInfoType, pInfo );
}
if( ulPrevRec != 0 )
{
if( SELF_GOTO( ( AREAP ) pArea, ulPrevRec ) != SUCCESS &&
errResult == SUCCESS )
errResult = FAILURE;
}
return errResult;
}
/*
* Clear the WorkArea for use.
*/
static ERRCODE hb_dbfNewArea( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfNewArea(%p)", pArea));
if( SUPER_NEW( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
pArea->hDataFile = pArea->hMemoFile = pArea->hMemoTmpFile = FS_ERROR;
pArea->fDataFlush = pArea->fMemoFlush = FALSE;
/* Index dirty read flag initialized to global RDD setting */
pArea->uiDirtyRead = HB_IDXREAD_DEFAULT;
/* Size for deleted records flag */
pArea->uiRecordLen = 1;
return SUCCESS;
}
/*
* Open a data store in the WorkArea.
*/
static ERRCODE hb_dbfOpen( DBFAREAP pArea, LPDBOPENINFO pOpenInfo )
{
ERRCODE errCode;
USHORT uiFlags, uiFields, uiSize, uiCount, uiSkip;
BOOL fRetry, fRawBlob;
PHB_ITEM pError, pItem;
PHB_FNAME pFileName;
BYTE * pBuffer;
LPDBFFIELD pField;
DBFIELDINFO dbFieldInfo;
BYTE szFileName[ _POSIX_PATH_MAX + 1 ];
char szAlias[ HB_RDD_MAX_ALIAS_LEN + 1 ];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfOpen(%p, %p)", pArea, pOpenInfo));
pArea->lpdbOpenInfo = pOpenInfo;
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGTRIGGER,
pOpenInfo->ulConnection, pItem ) == SUCCESS )
{
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
}
if( !pArea->fTrigger )
{
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TRIGGER,
pOpenInfo->ulConnection, pItem ) == SUCCESS )
{
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
}
}
if( pArea->fTrigger )
{
hb_itemPutC( pItem, ( char * ) pOpenInfo->abName );
if( !hb_dbfTriggerDo( pArea, EVENT_PREUSE, 0, pItem ) )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
hb_strncpy( ( char * ) szFileName, hb_itemGetCPtr( pItem ), sizeof( szFileName ) - 1 );
}
else
hb_strncpy( ( char * ) szFileName, ( char * ) pOpenInfo->abName, sizeof( szFileName ) - 1 );
if( !pArea->bLockType )
{
hb_itemClear( pItem );
if( SELF_INFO( ( AREAP ) pArea, DBI_LOCKSCHEME, pItem ) != SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pArea->bLockType = hb_itemGetNI( pItem );
if( !pArea->bLockType )
pArea->bLockType = DB_DBFLOCK_CLIP;
}
#ifndef HB_CDP_SUPPORT_OFF
if( pOpenInfo->cdpId )
{
pArea->cdPage = hb_cdpFind( (char *) pOpenInfo->cdpId );
if( !pArea->cdPage )
pArea->cdPage = hb_vmCDP();
}
else
pArea->cdPage = hb_vmCDP();
#endif
pArea->fShared = pOpenInfo->fShared;
pArea->fReadonly = pOpenInfo->fReadonly;
/* Force exclusive mode
* 0: AUTOSHARE disabled.
* 1: AUTOSHARE enabled.
* 2: force exclusive mode.
* */
if( hb_setGetAutoShare() == 2 )
pArea->fShared = FALSE;
uiFlags = (pArea->fReadonly ? FO_READ : FO_READWRITE) |
(pArea->fShared ? FO_DENYNONE : FO_EXCLUSIVE);
pError = NULL;
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
/* Add default file name extension if necessary */
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
hb_itemClear( pItem );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLEEXT, pItem ) != SUCCESS )
{
hb_xfree( pFileName );
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
pFileName->szExtension = hb_itemGetCPtr( pItem );
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
}
/* Create default alias if necessary */
if( !pOpenInfo->atomAlias && pFileName->szName )
{
hb_strncpyUpperTrim( szAlias, pFileName->szName, sizeof( szAlias ) - 1 );
pOpenInfo->atomAlias = ( BYTE * ) szAlias;
}
hb_xfree( pFileName );
hb_itemClear( pItem );
fRawBlob = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_BLOB_SUPPORT, pOpenInfo->ulConnection, pItem ) == SUCCESS &&
hb_itemGetL( pItem );
hb_itemRelease( pItem );
if( fRawBlob )
{
uiFields = uiSkip = 0;
pBuffer = NULL;
pArea->fHasMemo = TRUE;
}
else
{
/* Try open */
do
{
pArea->hDataFile = hb_fsExtOpen( szFileName, NULL, uiFlags |
FXO_DEFAULTS | FXO_SHARELOCK | FXO_COPYNAME,
NULL, pError );
if( pArea->hDataFile == FS_ERROR )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_OPEN );
hb_errPutSubCode( pError, EDBF_OPEN_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_OPEN ) );
hb_errPutFileName( pError, ( char * ) szFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
hb_errPutOsCode( pError, hb_fsError() );
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
pError = NULL;
}
/* Exit if error */
if( pArea->hDataFile == FS_ERROR )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
/* Allocate only after succesfully open file */
pArea->szDataFileName = hb_strdup( ( char * ) szFileName );
/* Read file header and exit if error */
errCode = SELF_READDBHEADER( ( AREAP ) pArea );
if( errCode != SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Add fields */
uiSkip = 0;
uiFields = ( pArea->uiHeaderLen - sizeof( DBFHEADER ) ) / sizeof( DBFFIELD );
uiSize = uiFields * sizeof( DBFFIELD );
pBuffer = uiFields ? ( BYTE * ) hb_xgrab( uiSize ) : NULL;
/* Read fields and exit if error */
do
{
hb_fsSeek( pArea->hDataFile, sizeof( DBFHEADER ), FS_SET );
if( hb_fsRead( pArea->hDataFile, pBuffer, uiSize ) != uiSize )
{
errCode = FAILURE;
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
{
errCode = SUCCESS;
break;
}
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
}
/* Exit if error */
if( errCode != SUCCESS )
{
if( pBuffer )
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* some RDDs use the additional space in the header after field arrray
for private data we should check for 0x0D marker to not use this
data as fields description */
for( uiCount = 0; uiCount < uiFields; uiCount++ )
{
pField = ( LPDBFFIELD ) ( pBuffer + uiCount * sizeof( DBFFIELD ) );
if( pField->bName[ 0 ] == 0x0d )
{
uiFields = uiCount;
break;
}
else if( pArea->bTableType == DB_DBF_VFP &&
pField->bFieldFlags & 0x01 )
{
uiSkip++;
}
}
uiFields -= uiSkip;
}
/* CL5.3 allow to create and open DBFs without fields */
#ifdef HB_C52_STRICT
if( uiFields == 0 )
{
errCode = FAILURE;
}
else
#endif
{
errCode = SELF_SETFIELDEXTENT( ( AREAP ) pArea, uiFields );
if( errCode != SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
}
/* Clear dbFieldInfo structure */
memset( &dbFieldInfo, 0, sizeof( dbFieldInfo ) );
/* Size for deleted flag */
pArea->uiRecordLen = 1;
for( uiCount = 0; uiCount < uiFields + uiSkip; uiCount++ )
{
pField = ( LPDBFFIELD ) ( pBuffer + uiCount * sizeof( DBFFIELD ) );
dbFieldInfo.atomName = pField->bName;
dbFieldInfo.atomName[10] = '\0';
/* hb_strUpper( (char *) dbFieldInfo.atomName, 11 ); */
dbFieldInfo.uiLen = pField->bLen;
dbFieldInfo.uiDec = 0;
dbFieldInfo.uiTypeExtended = 0;
/* We cannot accept bFieldFlags as is because Clipper
* creates tables where this field is random so we have to
* try to guess the flags ourself. But if we know that table
* was created by VFP which uses field flags then we can
* retrive information from bFieldFlags.
*/
if( pArea->bTableType == DB_DBF_VFP )
dbFieldInfo.uiFlags = pField->bFieldFlags;
else
dbFieldInfo.uiFlags = 0;
switch( pField->bType )
{
case 'C':
dbFieldInfo.uiType = HB_FT_STRING;
dbFieldInfo.uiLen = pField->bLen + pField->bDec * 256;
break;
case 'L':
dbFieldInfo.uiType = HB_FT_LOGICAL;
dbFieldInfo.uiLen = 1;
break;
case 'D':
dbFieldInfo.uiType = HB_FT_DATE;
if( dbFieldInfo.uiLen != 3 && dbFieldInfo.uiLen != 4 )
dbFieldInfo.uiLen = 8;
break;
case 'I':
dbFieldInfo.uiType = HB_FT_INTEGER;
if( ( dbFieldInfo.uiLen > 4 && dbFieldInfo.uiLen != 8 ) ||
dbFieldInfo.uiLen == 0 )
dbFieldInfo.uiLen = 4;
dbFieldInfo.uiDec = pField->bDec;
break;
case 'Y':
dbFieldInfo.uiType = HB_FT_CURRENCY;
if( ( dbFieldInfo.uiLen > 4 && dbFieldInfo.uiLen != 8 ) ||
dbFieldInfo.uiLen == 0 )
dbFieldInfo.uiLen = 8;
dbFieldInfo.uiDec = pField->bDec;
break;
case '2':
case '4':
dbFieldInfo.uiType = HB_FT_INTEGER;
dbFieldInfo.uiLen = pField->bType - '0';
break;
case 'N':
dbFieldInfo.uiType = HB_FT_LONG;
dbFieldInfo.uiDec = pField->bDec;
/* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I removed this
* limit, Druzus
*/
/*
if( pField->bLen > 20 )
errCode = FAILURE;
*/
break;
case 'F':
dbFieldInfo.uiType = HB_FT_FLOAT;
dbFieldInfo.uiDec = pField->bDec;
/* See note above */
break;
case '8':
case 'B':
dbFieldInfo.uiType = HB_FT_DOUBLE;
dbFieldInfo.uiDec = pField->bDec;
if( dbFieldInfo.uiLen != 8 )
errCode = FAILURE;
break;
/* types which are not supported by VM - mapped to different ones */
case 'T':
if( dbFieldInfo.uiLen == 8 )
dbFieldInfo.uiType = HB_FT_DAYTIME;
else if( dbFieldInfo.uiLen == 4 )
dbFieldInfo.uiType = HB_FT_TIME;
else
errCode = FAILURE;
break;
case '@':
dbFieldInfo.uiType = HB_FT_DAYTIME;
if( dbFieldInfo.uiLen != 8 )
errCode = FAILURE;
break;
case '=':
dbFieldInfo.uiType = HB_FT_MODTIME;
if( dbFieldInfo.uiLen != 8 )
errCode = FAILURE;
pArea->fModStamp = TRUE;
break;
case '^':
dbFieldInfo.uiType = HB_FT_ROWVER;
if( dbFieldInfo.uiLen != 8 )
errCode = FAILURE;
pArea->fModStamp = TRUE;
break;
case '+':
dbFieldInfo.uiType = HB_FT_AUTOINC;
if( dbFieldInfo.uiLen != 4 )
errCode = FAILURE;
pArea->fAutoInc = TRUE;
break;
case 'Q':
dbFieldInfo.uiType = HB_FT_VARLENGTH;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
break;
case 'V':
if( pArea->bTableType == DB_DBF_VFP )
{
dbFieldInfo.uiType = HB_FT_VARLENGTH;
}
else
{
dbFieldInfo.uiType = HB_FT_ANY;
if( dbFieldInfo.uiLen >= 6 )
{
pArea->uiMemoVersion = DB_MEMOVER_SIX;
pArea->fHasMemo = TRUE;
}
}
break;
case 'M':
dbFieldInfo.uiType = HB_FT_MEMO;
pArea->fHasMemo = TRUE;
break;
case 'P':
dbFieldInfo.uiType = HB_FT_IMAGE;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case 'W':
dbFieldInfo.uiType = HB_FT_BLOB;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case 'G':
dbFieldInfo.uiType = HB_FT_OLE;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case '0':
if( pArea->bTableType == DB_DBF_VFP && pField->bFieldFlags & 0x01 )
{
if( memcmp( dbFieldInfo.atomName, "_NullFlags", 10 ) == 0 )
{
/* TODO: NULLABLE and VARLENGTH support */
}
pArea->uiRecordLen += dbFieldInfo.uiLen;
continue;
}
default:
errCode = FAILURE;
break;
}
/* Add field */
if( errCode == SUCCESS )
errCode = SELF_ADDFIELD( ( AREAP ) pArea, &dbFieldInfo );
/* Exit if error */
if( errCode != SUCCESS )
break;
}
if( pBuffer )
hb_xfree( pBuffer );
/* Exit if error */
if( errCode != SUCCESS )
{
if( hb_vmRequestQuery() == 0 )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANDEFAULT );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGPASSWORD,
pOpenInfo->ulConnection, pItem ) == SUCCESS )
{
hb_dbfPasswordSet( pArea, pItem, FALSE );
}
else
{
hb_itemClear( pItem );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PASSWORD,
pOpenInfo->ulConnection, pItem ) == SUCCESS )
{
hb_dbfPasswordSet( pArea, pItem, FALSE );
}
}
hb_itemRelease( pItem );
/* Open memo file if exists */
if( pArea->fHasMemo )
{
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
pFileName->szExtension = NULL;
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
hb_xfree( pFileName );
pOpenInfo->abName = szFileName;
errCode = SELF_OPENMEMFILE( ( AREAP ) pArea, pOpenInfo );
}
if( errCode == SUCCESS )
{
/* If successful call SUPER_OPEN to finish system jobs */
errCode = SUPER_OPEN( ( AREAP ) pArea, pOpenInfo );
}
if( errCode != SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return FAILURE;
}
/* Alloc buffer */
pArea->pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pArea->fValidBuffer = FALSE;
/* Update the number of record for corrupted headers */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
/* Position cursor at the first record */
errCode = SELF_GOTOP( ( AREAP ) pArea );
if( pArea->fTrigger )
hb_dbfTriggerDo( pArea, EVENT_POSTUSE, 0, NULL );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/*
* Retrieve the size of the WorkArea structure.
*/
static ERRCODE hb_dbfStructSize( DBFAREAP pArea, USHORT * uiSize )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfStrucSize(%p, %p)", pArea, uiSize));
HB_SYMBOL_UNUSED( pArea );
* uiSize = sizeof( DBFAREA );
return SUCCESS;
}
/*
* Pack helper function called for each packed record
*/
static ERRCODE hb_dbfPackRec( DBFAREAP pArea, ULONG ulRecNo, BOOL *fWritten )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPackRec(%p, %lu, %p)", pArea, ulRecNo, fWritten));
HB_SYMBOL_UNUSED( ulRecNo );
*fWritten = !pArea->fDeleted;
return SUCCESS;
}
/*
* Remove records marked for deletion from a database.
*/
static ERRCODE hb_dbfPack( DBFAREAP pArea )
{
ULONG ulRecIn, ulRecOut, ulEvery, ulUserEvery;
PHB_ITEM pError, pBlock;
BOOL fWritten;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPack(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->fShared )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_SHARED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_SHARED ) );
hb_errPutSubCode( pError, EDBF_SHARED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PACK, 0, NULL ) )
return FAILURE;
}
if( SELF_GOCOLD( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
if( HB_IS_ARRAY( pArea->valResult ) && hb_arrayLen( pArea->valResult ) == 2 )
{
pBlock = hb_arrayGetItemPtr( pArea->valResult, 1 );
ulUserEvery = hb_arrayGetNL( pArea->valResult, 2 );
if( ulUserEvery < 1 )
ulUserEvery = 1;
}
else
{
pBlock = NULL;
ulUserEvery = 1;
}
ulRecOut = ulEvery = 0;
ulRecIn = 1;
while( ulRecIn <= pArea->ulRecCount )
{
if( SELF_GOTO( ( AREAP ) pArea, ulRecIn ) != SUCCESS )
return FAILURE;
if( !hb_dbfReadRecord( pArea ) )
return FAILURE;
/* Execute the Code Block */
if( pBlock )
{
if( ++ulEvery >= ulUserEvery )
{
ulEvery = 0;
if( SELF_EVALBLOCK( ( AREAP ) pArea, pBlock ) != SUCCESS )
return FAILURE;
}
}
if( SELF_PACKREC( ( AREAP ) pArea, ulRecOut + 1, &fWritten ) != SUCCESS )
return FAILURE;
if( fWritten )
{
ulRecOut++;
if( pArea->ulRecNo != ulRecOut || pArea->fRecordChanged )
{
pArea->ulRecNo = ulRecOut;
pArea->fRecordChanged = TRUE;
if( ! hb_dbfWriteRecord( pArea ) )
return FAILURE;
}
}
ulRecIn++;
}
/* Execute the Code Block for pending record */
if( pBlock && ulEvery > 0 )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pBlock ) != SUCCESS )
return FAILURE;
}
if( pArea->ulRecCount != ulRecOut )
{
pArea->ulRecCount = ulRecOut;
/* Force write new header */
pArea->fUpdateHeader = TRUE;
if( SELF_WRITEDBHEADER( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
return SELF_GOTO( ( AREAP ) pArea, 1 );
}
#ifndef HB_CDP_SUPPORT_OFF
HB_EXPORT void hb_dbfTranslateRec( DBFAREAP pArea, BYTE * pBuffer, PHB_CODEPAGE cdp_src, PHB_CODEPAGE cdp_dest )
{
USHORT uiIndex;
LPFIELD pField;
for( uiIndex = 0, pField = pArea->lpFields; uiIndex < pArea->uiFieldCount; uiIndex++, pField++ )
{
if( pField->uiType == HB_FT_STRING && ( pField->uiFlags && HB_FF_BINARY ) == 0 )
{
hb_cdpnTranslate( ( char * ) pBuffer + pArea->pFieldOffset[ uiIndex ], cdp_src, cdp_dest, pField->uiLen );
}
}
}
#endif
/*
* Physically reorder a database.
*/
static ERRCODE hb_dbfSort( DBFAREAP pArea, LPDBSORTINFO pSortInfo )
{
ULONG ulRecNo;
USHORT uiCount;
BOOL bMoreRecords, bLimited, bValidRecord;
ERRCODE uiError;
DBQUICKSORT dbQuickSort;
BYTE * pBuffer;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSort(%p, %p)", pArea, pSortInfo));
if( SELF_GOCOLD( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
if( !hb_dbQSortInit( &dbQuickSort, pSortInfo, pArea->uiRecordLen ) )
return FAILURE;
uiError = SUCCESS;
uiCount = 0;
pBuffer = dbQuickSort.pBuffer;
ulRecNo = 1;
if( pSortInfo->dbtri.dbsci.itmRecID )
{
uiError = SELF_GOTOID( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmRecID );
bMoreRecords = bLimited = TRUE;
}
else if( pSortInfo->dbtri.dbsci.lNext )
{
ulRecNo = hb_itemGetNL( pSortInfo->dbtri.dbsci.lNext );
bLimited = TRUE;
bMoreRecords = ( ulRecNo > 0 );
}
else
{
if( !pSortInfo->dbtri.dbsci.itmCobWhile &&
( !pSortInfo->dbtri.dbsci.fRest ||
!hb_itemGetL( pSortInfo->dbtri.dbsci.fRest ) ) )
uiError = SELF_GOTOP( ( AREAP ) pArea );
bMoreRecords = TRUE;
bLimited = FALSE;
}
while( uiError == SUCCESS && !pArea->fEof && bMoreRecords )
{
if( pSortInfo->dbtri.dbsci.itmCobWhile )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmCobWhile ) != SUCCESS )
{
hb_dbQSortExit( &dbQuickSort );
return FAILURE;
}
bMoreRecords = hb_itemGetL( pArea->valResult );
}
if( bMoreRecords && pSortInfo->dbtri.dbsci.itmCobFor )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmCobFor ) != SUCCESS )
{
hb_dbQSortExit( &dbQuickSort );
return FAILURE;
}
bValidRecord = hb_itemGetL( pArea->valResult );
}
else
bValidRecord = bMoreRecords;
if( bValidRecord )
{
if( uiCount == dbQuickSort.uiMaxRecords )
{
if( !hb_dbQSortAdvance( &dbQuickSort, uiCount ) )
{
hb_dbQSortExit( &dbQuickSort );
return FAILURE;
}
pBuffer = dbQuickSort.pBuffer;
uiCount = 0;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
{
hb_dbQSortExit( &dbQuickSort );
return FAILURE;
}
/* Copy data */
memcpy( pBuffer, pArea->pRecord, pArea->uiRecordLen );
#ifndef HB_CDP_SUPPORT_OFF
if( pArea->cdPage != hb_vmCDP() )
{
hb_dbfTranslateRec( pArea, pBuffer, pArea->cdPage, hb_vmCDP() );
}
#endif
pBuffer += pArea->uiRecordLen;
uiCount++;
}
if( bMoreRecords && bLimited )
bMoreRecords = ( --ulRecNo > 0 );
if( bMoreRecords )
uiError = SELF_SKIP( ( AREAP ) pArea, 1 );
}
/* Copy last records */
if( uiCount > 0 )
{
if( !hb_dbQSortAdvance( &dbQuickSort, uiCount ) )
{
hb_dbQSortExit( &dbQuickSort );
return FAILURE;
}
}
/* Sort records */
hb_dbQSortComplete( &dbQuickSort );
return SUCCESS;
}
/*
* Copy one or more records from one WorkArea to another.
*/
static ERRCODE hb_dbfTrans( DBFAREAP pArea, LPDBTRANSINFO pTransInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTrans(%p, %p)", pArea, pTransInfo));
if( pTransInfo->uiFlags & DBTF_MATCH )
{
if( pArea->fHasMemo || pArea->cdPage != pTransInfo->lpaDest->cdPage )
pTransInfo->uiFlags &= ~DBTF_PUTREC;
else if( pArea->rddID == pTransInfo->lpaDest->rddID )
pTransInfo->uiFlags |= DBTF_PUTREC;
else
{
PHB_ITEM pPutRec = hb_itemPutL( NULL, FALSE );
if( SELF_INFO( ( AREAP ) pTransInfo->lpaDest, DBI_CANPUTREC, pPutRec ) != SUCCESS )
{
hb_itemRelease( pPutRec );
return FAILURE;
}
if( hb_itemGetL( pPutRec ) )
pTransInfo->uiFlags |= DBTF_PUTREC;
else
pTransInfo->uiFlags &= ~DBTF_PUTREC;
hb_itemRelease( pPutRec );
}
}
return SUPER_TRANS( ( AREAP ) pArea, pTransInfo );
}
/*
* Physically remove all records from data store.
*/
static ERRCODE hb_dbfZap( DBFAREAP pArea )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfZap(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->fShared )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_SHARED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_SHARED ) );
hb_errPutSubCode( pError, EDBF_SHARED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_ZAP, 0, NULL ) )
return FAILURE;
}
if( SELF_GOCOLD( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
pArea->fUpdateHeader = TRUE;
pArea->ulRecCount = 0;
if( SELF_WRITEDBHEADER( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
if( SELF_GOTO( ( AREAP ) pArea, 0 ) != SUCCESS )
return FAILURE;
/* Zap memo file */
if( pArea->fHasMemo )
{
if( SELF_CREATEMEMFILE( ( AREAP ) pArea, NULL ) != SUCCESS )
return FAILURE;
}
return SUCCESS;
}
/*
* Report end of relation.
*/
static ERRCODE hb_dbfChildEnd( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildEnd(%p, %p)", pArea, pRelInfo));
if( pArea->lpdbPendingRel == pRelInfo )
uiError = SELF_FORCEREL( ( AREAP ) pArea );
else
uiError = SUCCESS;
SUPER_CHILDEND( ( AREAP ) pArea, pRelInfo );
return uiError;
}
/*
* Report initialization of a relation.
*/
static ERRCODE hb_dbfChildStart( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildStart(%p, %p)", pArea, pRelInfo));
if( SELF_CHILDSYNC( ( AREAP ) pArea, pRelInfo ) != SUCCESS )
return FAILURE;
return SUPER_CHILDSTART( ( AREAP ) pArea, pRelInfo );
}
/*
* Post a pending relational movement.
*/
static ERRCODE hb_dbfChildSync( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildSync(%p, %p)", pArea, pRelInfo));
/*
* !!! The side effect of calling GOCOLD() inside CHILDSYNC() is
* evaluation of index expressions (index KEY and FOR condition)
* when the pArea is not the current one - it means that the
* used RDD has to set proper work area before eval.
* IMHO GOCOLD() could be safely removed from this place but I'm not
* sure it's Clipper compatible - I will have to check it, Druzus.
*/
/*
* I've checked in CL5.3 Technical Reference Guide that only
* FORCEREL() should ensure that the work area buffer is not HOT
* and then call RELEVAL() - I hope it describes the CL5.3 DBF* RDDs
* behavior so I replicate it - the GOCOLD() is moved from CHILDSYNC()
* to FORCEREL(), Druzus.
*/
/*
* After some cleanups, the core DBF* code can work with GOCOLD() here
* and in FORCEREL() without any problems. Because calling GOCOLD() in
* FORCEREL() may interacts with badly written users RDD which inherits
* from DBF* RDDs and/or user triggers then I decided to keep it here,
* Druzus.
*/
if( SELF_GOCOLD( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
pArea->lpdbPendingRel = pRelInfo;
if( pArea->lpdbRelations )
return SELF_SYNCCHILDREN( ( AREAP ) pArea );
return SUCCESS;
}
/*
* Force relational seeks in the specified WorkArea.
*/
static ERRCODE hb_dbfForceRel( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfForceRel(%p)", pArea));
if( pArea->lpdbPendingRel )
{
LPDBRELINFO lpdbPendingRel;
lpdbPendingRel = pArea->lpdbPendingRel;
pArea->lpdbPendingRel = NULL;
/* update buffers */
/* commented out - see comment above in CHILDSYNC() method, Druzus */
/* SELF_GOCOLD( ( AREAP ) pArea ); */
return SELF_RELEVAL( ( AREAP ) pArea, lpdbPendingRel );
}
return SUCCESS;
}
/*
* Set the filter condition for the specified WorkArea.
*/
static ERRCODE hb_dbfSetFilter( DBFAREAP pArea, LPDBFILTERINFO pFilterInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetFilter(%p, %p)", pArea, pFilterInfo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
return SUPER_SETFILTER( ( AREAP ) pArea, pFilterInfo );
}
/*
* Perform a network lowlevel lock in the specified WorkArea.
*/
static ERRCODE hb_dbfRawLock( DBFAREAP pArea, USHORT uiAction, ULONG ulRecNo )
{
ERRCODE uiErr = SUCCESS;
HB_FOFFSET ulPos, ulFlSize, ulRlSize;
int iDir;
BOOL fLck;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRawLock(%p, %hu, %lu)", pArea, uiAction, ulRecNo));
if( pArea->fShared )
{
if( hb_dbfLockData( pArea, &ulPos, &ulFlSize, &ulRlSize, &iDir ) == FAILURE )
return FAILURE;
switch( uiAction )
{
case FILE_LOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos - ulFlSize, ulFlSize, FL_LOCK );
else
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + 1, ulFlSize, FL_LOCK );
if( !fLck )
uiErr = FAILURE;
else
pArea->fFLocked = TRUE;
}
break;
case FILE_UNLOCK:
if( pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos - ulFlSize, ulFlSize, FL_UNLOCK );
else
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + 1, ulFlSize, FL_UNLOCK );
if( !fLck )
uiErr = FAILURE;
pArea->fFLocked = FALSE;
}
break;
case REC_LOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos - ulRecNo, ulRlSize, FL_LOCK );
else if( iDir == 2 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + ( ulRecNo - 1 ) * pArea->uiRecordLen + pArea->uiHeaderLen, ulRlSize, FL_LOCK );
else
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + ulRecNo, ulRlSize, FL_LOCK );
if( !fLck )
uiErr = FAILURE;
}
break;
case REC_UNLOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos - ulRecNo, ulRlSize, FL_UNLOCK );
else if( iDir == 2 )
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + ( ulRecNo - 1 ) * pArea->uiRecordLen + pArea->uiHeaderLen, ulRlSize, FL_UNLOCK );
else
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos + ulRecNo, ulRlSize, FL_UNLOCK );
if( !fLck )
uiErr = FAILURE;
}
break;
case APPEND_LOCK:
case HEADER_LOCK:
if( !pArea->fHeaderLocked )
{
do
{
fLck = hb_fsLockLarge( pArea->hDataFile, ulPos, 1, FL_LOCK | FLX_WAIT );
/* TODO: call special error handler (LOCKHANDLER) hiere if !fLck */
} while( !fLck );
if( !fLck )
uiErr = FAILURE;
else
pArea->fHeaderLocked = TRUE;
}
break;
case APPEND_UNLOCK:
case HEADER_UNLOCK:
if( pArea->fHeaderLocked )
{
if( !hb_fsLockLarge( pArea->hDataFile, ulPos, 1, FL_UNLOCK ) )
uiErr = FAILURE;
pArea->fHeaderLocked = FALSE;
}
break;
}
}
return uiErr;
}
/*
* Perform a network lock in the specified WorkArea.
*/
static ERRCODE hb_dbfLock( DBFAREAP pArea, LPDBLOCKINFO pLockInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLock(%p, %p)", pArea, pLockInfo));
if( pArea->fShared )
{
switch( pLockInfo->uiMethod )
{
case DBLM_EXCLUSIVE:
return hb_dbfLockRecord( pArea, 0, &pLockInfo->fResult, TRUE );
case DBLM_MULTIPLE:
return hb_dbfLockRecord( pArea, hb_itemGetNL( pLockInfo->itmRecID ),
&pLockInfo->fResult, FALSE );
case DBLM_FILE:
return hb_dbfLockFile( pArea, &pLockInfo->fResult );
default:
pLockInfo->fResult = FALSE;
}
}
else
pLockInfo->fResult = TRUE;
return SUCCESS;
}
/*
* Release network locks in the specified WorkArea.
*/
static ERRCODE hb_dbfUnLock( DBFAREAP pArea, PHB_ITEM pRecNo )
{
ERRCODE uiError;
ULONG ulRecNo;
HB_TRACE(HB_TR_DEBUG, ("dbfUnLock(%p, %p)", pArea, pRecNo));
ulRecNo = hb_itemGetNL( pRecNo );
uiError = SUCCESS;
if( pArea->fShared )
{
if( pArea->ulNumLocksPos > 0 )
{
/* Unlock all records? */
if( ulRecNo == 0 )
uiError = hb_dbfUnlockAllRecords( pArea );
else if( hb_dbfIsLocked( pArea, ulRecNo ) )
uiError = hb_dbfUnlockRecord( pArea, ulRecNo );
}
if( pArea->fFLocked )
{
uiError = hb_dbfUnlockFile( pArea );
}
}
return uiError;
}
/*
* Create a memo file in the WorkArea.
*/
static ERRCODE hb_dbfCreateMemFile( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCreateMemFile(%p, %p)", pArea, pCreateInfo));
if( pCreateInfo )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
pArea->fHasMemo = FALSE;
return FAILURE;
}
/*
* BLOB2FILE - retrieve memo contents into file
*/
static ERRCODE hb_dbfGetValueFile( DBFAREAP pArea, USHORT uiIndex, BYTE * szFile, USHORT uiMode )
{
USHORT uiError = SUCCESS;
LPFIELD pField;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetValueFile(%p, %hu, %s, %hu)", pArea, uiIndex, szFile, uiMode));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
if( --uiIndex >= pArea->uiFieldCount )
return FAILURE;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_STRING )
{
HB_FHANDLE hFile;
hFile = hb_fsExtOpen( szFile, NULL, FO_WRITE | FO_EXCLUSIVE |
FXO_DEFAULTS | FXO_SHARELOCK |
( uiMode == FILEGET_APPEND ? FXO_APPEND : FXO_TRUNCATE ),
NULL, NULL );
if( hFile == FS_ERROR )
{
uiError = uiMode != FILEGET_APPEND ? EDBF_CREATE : EDBF_OPEN_DBF;
}
else
{
hb_fsSeekLarge( hFile, 0, FS_END );
if( hb_fsWrite( hFile, pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen ) != pField->uiLen )
{
uiError = EDBF_WRITE;
}
hb_fsClose( hFile );
}
}
else
{
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != SUCCESS )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
if( uiError != EDBF_DATATYPE )
{
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, ( char * ) szFile );
}
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
return SUCCESS;
}
/*
* Open a memo file in the specified WorkArea.
*/
static ERRCODE hb_dbfOpenMemFile( DBFAREAP pArea, LPDBOPENINFO pOpenInfo )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfOpenMemFile(%p, %p)", pArea, pOpenInfo));
pError = hb_errNew();
hb_errPutGenCode( pError, EG_OPEN );
hb_errPutSubCode( pError, EDBF_OPEN_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_OPEN ) );
hb_errPutFileName( pError, ( char * ) pOpenInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
/*
* FILE2BLOB - store file contents in MEMO
*/
static ERRCODE hb_dbfPutValueFile( DBFAREAP pArea, USHORT uiIndex, BYTE * szFile, USHORT uiMode )
{
USHORT uiError = SUCCESS, uiRead;
LPFIELD pField;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutValueFile(%p, %hu, %s, %hu)", pArea, uiIndex, szFile, uiMode));
HB_SYMBOL_UNUSED( uiMode );
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != SUCCESS )
return FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return FAILURE;
if( --uiIndex >= pArea->uiFieldCount )
return FAILURE;
if( !pArea->fPositioned )
return FAILURE;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == FAILURE )
return FAILURE;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_STRING )
{
HB_FHANDLE hFile;
hFile = hb_fsExtOpen( szFile, NULL, FO_READ | FO_DENYNONE |
FXO_DEFAULTS | FXO_SHARELOCK, NULL, NULL );
if( hFile == FS_ERROR )
{
uiError = EDBF_OPEN_DBF;
}
else
{
uiRead = hb_fsRead( hFile, pArea->pRecord +
pArea->pFieldOffset[ uiIndex ], pField->uiLen );
if( uiRead != ( USHORT ) FS_ERROR && uiRead < pField->uiLen )
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + uiRead,
' ', pField->uiLen - uiRead );
hb_fsClose( hFile );
}
}
else
{
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != SUCCESS )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
if( uiError != EDBF_DATATYPE )
{
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, ( char * ) szFile );
}
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
return SUCCESS;
}
/*
* Read the database file header record in the WorkArea.
*/
static ERRCODE hb_dbfReadDBHeader( DBFAREAP pArea )
{
BOOL fRetry, fError;
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfReadDBHeader(%p)", pArea));
pError = NULL;
/* Try read */
do
{
fError = FALSE;
hb_fsSeek( pArea->hDataFile, 0, FS_SET );
if( hb_fsRead( pArea->hDataFile, ( BYTE * ) &pArea->dbfHeader,
sizeof( DBFHEADER ) ) != sizeof( DBFHEADER ) )
{
fError = TRUE;
}
else
{
pArea->fAutoInc = pArea->fModStamp =
pArea->fTableEncrypted = pArea->fHasMemo = FALSE;
pArea->bTableType = DB_DBF_STD;
pArea->bMemoType = DB_MEMO_NONE;
pArea->bCryptType = DB_CRYPT_NONE;
pArea->fHasTags = ( pArea->dbfHeader.bHasTags & 0x01 ) != 0;
switch( pArea->dbfHeader.bVersion )
{
case 0x31:
pArea->fAutoInc = TRUE;
case 0x30:
pArea->bTableType = DB_DBF_VFP;
if( pArea->dbfHeader.bHasTags & 0x02 )
{
pArea->bMemoType = DB_MEMO_FPT;
pArea->fHasMemo = TRUE;
}
break;
case 0x03:
break;
case 0x83:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_DBT;
break;
case 0xE5:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_SMT;
break;
case 0xF5:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_FPT;
break;
case 0x06:
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
break;
case 0x86:
pArea->fTableEncrypted = TRUE;
pArea->fHasMemo = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_DBT;
break;
case 0xE6:
pArea->fHasMemo = TRUE;
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_SMT;
break;
case 0xF6:
pArea->fHasMemo = TRUE;
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_FPT;
break;
default:
fError = TRUE;
}
}
if( fError )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
hb_itemRelease( pError );
/* Read error? */
if( fError )
return FAILURE;
pArea->uiHeaderLen = HB_GET_LE_UINT16( pArea->dbfHeader.uiHeaderLen );
pArea->ulRecCount = HB_GET_LE_UINT32( pArea->dbfHeader.ulRecCount );
return SUCCESS;
}
/*
* Write the database file header record in the WorkArea.
*/
static ERRCODE hb_dbfWriteDBHeader( DBFAREAP pArea )
{
int iYear, iMonth, iDay;
BOOL fLck = FALSE;
ERRCODE errCode;
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfWriteDBHeader(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FAILURE;
}
pArea->dbfHeader.bHasTags = pArea->fHasTags ? 0x01 : 0x00;
if( pArea->bTableType == DB_DBF_VFP )
{
pArea->dbfHeader.bVersion = ( pArea->fAutoInc ? 0x31 : 0x30 );
if( pArea->fHasMemo && pArea->bMemoType == DB_MEMO_FPT )
pArea->dbfHeader.bHasTags |= 0x02;
}
else
{
pArea->dbfHeader.bVersion = 0x03;
if( pArea->fHasMemo )
{
if( pArea->bMemoType == DB_MEMO_DBT )
pArea->dbfHeader.bVersion = 0x83;
else if( pArea->bMemoType == DB_MEMO_FPT )
pArea->dbfHeader.bVersion = 0xF5;
else if( pArea->bMemoType == DB_MEMO_SMT )
pArea->dbfHeader.bVersion = 0xE5;
}
if( pArea->fTableEncrypted && pArea->bCryptType == DB_CRYPT_SIX )
pArea->dbfHeader.bVersion = ( pArea->dbfHeader.bVersion & 0xf0 ) | 0x06;
}
hb_dateToday( &iYear, &iMonth, &iDay );
pArea->dbfHeader.bYear = ( BYTE ) ( iYear - 1900 );
pArea->dbfHeader.bMonth = ( BYTE ) iMonth;
pArea->dbfHeader.bDay = ( BYTE ) iDay;
/* Update record count */
if( pArea->fShared )
{
if( !pArea->fHeaderLocked )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_LOCK, 0 ) != SUCCESS )
return FAILURE;
fLck = TRUE;
}
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
}
else
{
/* Exclusive mode */
/* Seek to logical eof and write eof mark */
hb_fsSeekLarge( pArea->hDataFile, ( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) pArea->uiRecordLen *
( HB_FOFFSET ) pArea->ulRecCount, FS_SET );
hb_fsWrite( pArea->hDataFile, ( BYTE * ) "\032", 1 );
hb_fsWrite( pArea->hDataFile, NULL, 0 );
}
HB_PUT_LE_UINT32( pArea->dbfHeader.ulRecCount, pArea->ulRecCount );
HB_PUT_LE_UINT16( pArea->dbfHeader.uiHeaderLen, pArea->uiHeaderLen );
HB_PUT_LE_UINT16( pArea->dbfHeader.uiRecordLen, pArea->uiRecordLen );
hb_fsSeek( pArea->hDataFile, 0, FS_SET );
if( hb_fsWrite( pArea->hDataFile, ( BYTE * ) &pArea->dbfHeader,
sizeof( DBFHEADER ) ) == sizeof( DBFHEADER ) )
{
errCode = SUCCESS;
}
else
{
errCode = FAILURE;
}
/* TODO: add RT error */
pArea->fDataFlush = TRUE;
pArea->fUpdateHeader = FALSE;
if( fLck )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_UNLOCK, 0 ) != SUCCESS )
return FAILURE;
}
if( errCode != SUCCESS )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_WRITE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_WRITE ) );
hb_errPutSubCode( pError, EDBF_WRITE );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutOsCode( pError, hb_fsError() );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
return errCode;
}
static ERRCODE hb_dbfDrop( LPRDDNODE pRDD, PHB_ITEM pItemTable, PHB_ITEM pItemIndex, ULONG ulConnect )
{
char szFileName[ _POSIX_PATH_MAX + 1 ], * szFile, * szExt;
PHB_ITEM pFileExt = NULL;
PHB_FNAME pFileName;
BOOL fTable = FALSE, fResult = FALSE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDrop(%p,%p,%p,%lu)", pRDD, pItemTable, pItemIndex, ulConnect));
szFile = hb_itemGetCPtr( pItemIndex );
if( !szFile[ 0 ] )
{
/* Try to delete index file */
szFile = hb_itemGetCPtr( pItemTable );
if( !szFile[ 0 ] )
return FALSE;
fTable = TRUE;
}
pFileName = hb_fsFNameSplit( szFile );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
/* Add default extension if missing */
pFileExt = hb_itemPutC( NULL, NULL );
if( SELF_RDDINFO( pRDD, fTable ? RDDI_TABLEEXT : RDDI_ORDBAGEXT, ulConnect, pFileExt ) == SUCCESS )
pFileName->szExtension = hb_itemGetCPtr( pFileExt );
}
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
/* Use hb_spFile first to locate table which can be in differ path */
if( hb_spFile( ( BYTE * ) szFileName, ( BYTE * ) szFileName ) )
{
fResult = hb_fsDelete( ( BYTE * ) szFileName );
if( fResult && fTable )
{
/*
* Database table file has been deleted, now check if memo is
* supported and if yes then try to delete memo file if it exists
* in the same directory as table file
* hb_fsFNameSplit() repeated intentionally to respect
* the path set by hb_spFile()
*/
pFileName = hb_fsFNameSplit( szFileName );
pFileExt = hb_itemPutC( pFileExt, NULL );
if( SELF_RDDINFO( pRDD, RDDI_MEMOEXT, ulConnect, pFileExt ) == SUCCESS )
{
szExt = hb_itemGetCPtr( pFileExt );
if( szExt[ 0 ] )
{
pFileName->szExtension = szExt;
hb_fsFNameMerge( szFileName, pFileName );
hb_fsDelete( ( BYTE * ) szFileName );
}
}
/*
* and try to delete production index also if it exists
* in the same directory as table file
*/
pFileExt = hb_itemPutC( pFileExt, NULL );
if( SELF_RDDINFO( pRDD, RDDI_ORDSTRUCTEXT, ulConnect, pFileExt ) == SUCCESS )
{
szExt = hb_itemGetCPtr( pFileExt );
if( szExt[ 0 ] )
{
pFileName->szExtension = szExt;
hb_fsFNameMerge( szFileName, pFileName );
hb_fsDelete( ( BYTE * ) szFileName );
}
}
hb_xfree( pFileName );
}
}
if( pFileExt )
{
hb_itemRelease( pFileExt );
}
return fResult ? SUCCESS : FAILURE;
}
static ERRCODE hb_dbfExists( LPRDDNODE pRDD, PHB_ITEM pItemTable, PHB_ITEM pItemIndex, ULONG ulConnect )
{
char szFileName[ _POSIX_PATH_MAX + 1 ], * szFile;
PHB_ITEM pFileExt = NULL;
PHB_FNAME pFileName;
BOOL fTable = FALSE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfExists(%p,%p,%p,%lu)", pRDD, pItemTable, pItemIndex, ulConnect));
szFile = hb_itemGetCPtr( pItemIndex );
if( !szFile[ 0 ] )
{
szFile = hb_itemGetCPtr( pItemTable );
if( !szFile[ 0 ] )
return FALSE;
fTable = TRUE;
}
pFileName = hb_fsFNameSplit( szFile );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
pFileExt = hb_itemPutC( NULL, NULL );
if( SELF_RDDINFO( pRDD, fTable ? RDDI_TABLEEXT : RDDI_ORDBAGEXT, ulConnect, pFileExt ) == SUCCESS )
pFileName->szExtension = hb_itemGetCPtr( pFileExt );
}
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
if( pFileExt )
{
hb_itemRelease( pFileExt );
}
return hb_spFile( ( BYTE * ) szFileName, NULL ) ? SUCCESS : FAILURE;
}
static ERRCODE hb_dbfInit( LPRDDNODE pRDD )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfInit(%p)", pRDD));
pRDD->lpvCargo = hb_xgrab( sizeof( DBFDATA ) );
memset( pRDD->lpvCargo, 0, sizeof( DBFDATA ) );
( ( LPDBFDATA ) pRDD->lpvCargo )->bTableType = DB_DBF_STD;
( ( LPDBFDATA ) pRDD->lpvCargo )->bCryptType = DB_CRYPT_NONE;
( ( LPDBFDATA ) pRDD->lpvCargo )->uiDirtyRead = HB_IDXREAD_CLEANMASK;
return SUCCESS;
}
static ERRCODE hb_dbfExit( LPRDDNODE pRDD )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfExit(%p)", pRDD));
if( pRDD->lpvCargo )
{
LPDBFDATA pData = ( LPDBFDATA ) pRDD->lpvCargo;
if( pData->szTrigger )
hb_xfree( pData->szTrigger );
if( pData->szPendingTrigger )
hb_xfree( pData->szPendingTrigger );
if( pData->szPasswd )
hb_xfree( pData->szPasswd );
if( pData->szPendingPasswd )
hb_xfree( pData->szPendingPasswd );
hb_xfree( pRDD->lpvCargo );
pRDD->lpvCargo = NULL;
}
s_uiRddId = ( USHORT ) -1;
return SUCCESS;
}
static ERRCODE hb_dbfRddInfo( LPRDDNODE pRDD, USHORT uiIndex, ULONG ulConnect, PHB_ITEM pItem )
{
LPDBFDATA pData;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRddInfo(%p, %hu, %lu, %p)", pRDD, uiIndex, ulConnect, pItem));
pData = ( LPDBFDATA ) pRDD->lpvCargo;
switch( uiIndex )
{
case RDDI_ISDBF:
case RDDI_CANPUTREC:
case RDDI_LOCAL:
hb_itemPutL( pItem, TRUE );
break;
case RDDI_TABLEEXT:
{
char * szNew = hb_itemGetCPtr( pItem );
if( szNew[0] == '.' && szNew[1] )
szNew = hb_strdup( szNew );
else
szNew = NULL;
hb_itemPutC( pItem, pData->szTableExt[ 0 ] ? pData->szTableExt : DBF_TABLEEXT );
if( szNew )
{
hb_strncpy( pData->szTableExt, szNew, sizeof( pData->szTableExt ) - 1 );
hb_xfree( szNew );
}
break;
}
case RDDI_TABLETYPE:
{
int iType = hb_itemGetNI( pItem );
hb_itemPutNI( pItem, pData->bTableType ? pData->bTableType : DB_DBF_STD );
switch( iType )
{
case DB_DBF_STD: /* standard dBase/Clipper DBF file */
case DB_DBF_VFP: /* VFP DBF file */
pData->bTableType = iType;
}
break;
}
case RDDI_LOCKSCHEME:
{
int iScheme = hb_itemGetNI( pItem );
hb_itemPutNI( pItem, pData->bLockType ? pData->bLockType :
hb_setGetDBFLockScheme() );
switch( iScheme )
{
case DB_DBFLOCK_CLIP:
case DB_DBFLOCK_CL53:
case DB_DBFLOCK_CL53EXT:
case DB_DBFLOCK_VFP:
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
#endif
pData->bLockType = ( int ) iScheme;
}
break;
}
case RDDI_DIRTYREAD:
{
BOOL fDirty = ( pData->uiDirtyRead == HB_IDXREAD_DIRTYMASK );
if( HB_IS_LOGICAL( pItem ) )
{
pData->uiDirtyRead = hb_itemGetL( pItem ) ?
HB_IDXREAD_DIRTYMASK : HB_IDXREAD_CLEANMASK;
}
hb_itemPutL( pItem, fDirty );
break;
}
case RDDI_TRIGGER:
{
char * szTrigger = pData->szTrigger;
BOOL fFree = FALSE;
if( HB_IS_STRING( pItem ) )
{
fFree = TRUE;
pData->szTrigger = hb_itemGetCLen( pItem ) > 0 ?
hb_itemGetC( pItem ) : NULL;
}
if( fFree && szTrigger )
hb_itemPutCPtr2( pItem, szTrigger );
else
hb_itemPutC( pItem, szTrigger );
if( !szTrigger && !fFree )
return FAILURE;
break;
}
case RDDI_PENDINGTRIGGER:
if( HB_IS_STRING( pItem ) )
{
if( pData->szPendingTrigger )
{
hb_xfree( pData->szPendingTrigger );
pData->szPendingTrigger = NULL;
}
if( hb_itemGetCLen( pItem ) > 0 )
pData->szPendingTrigger = hb_itemGetC( pItem );
}
else if( pData->szPendingTrigger )
{
hb_itemPutCPtr2( pItem, pData->szPendingTrigger );
pData->szPendingTrigger = NULL;
}
else
return FAILURE;
break;
case RDDI_PASSWORD:
{
char * szPasswd = pData->szPasswd;
BOOL fFree = FALSE;
if( HB_IS_STRING( pItem ) )
{
fFree = TRUE;
pData->szPasswd = hb_itemGetCLen( pItem ) > 0 ?
hb_itemGetC( pItem ) : NULL;
}
if( fFree && szPasswd )
hb_itemPutCPtr2( pItem, szPasswd );
else
hb_itemPutC( pItem, szPasswd );
if( !szPasswd && !fFree )
return FAILURE;
break;
}
case RDDI_PENDINGPASSWORD:
if( HB_IS_STRING( pItem ) )
{
if( pData->szPendingPasswd )
{
hb_xfree( pData->szPendingPasswd );
pData->szPendingPasswd = NULL;
}
if( hb_itemGetCLen( pItem ) > 0 )
pData->szPendingPasswd = hb_itemGetC( pItem );
}
else if( pData->szPendingPasswd )
{
hb_itemPutCPtr2( pItem, pData->szPendingPasswd );
pData->szPendingPasswd = NULL;
}
else
return FAILURE;
break;
default:
return SUPER_RDDINFO( pRDD, uiIndex, ulConnect, pItem );
}
return SUCCESS;
}
HB_FUNC( _DBF ) { ; }
HB_FUNC( DBF_GETFUNCTABLE )
{
RDDFUNCS * pTable;
USHORT * uiCount, uiRddId;
uiCount = ( USHORT * ) hb_parptr( 1 );
pTable = ( RDDFUNCS * ) hb_parptr( 2 );
uiRddId = hb_parni( 4 );
HB_TRACE(HB_TR_DEBUG, ("DBF_GETFUNCTABLE(%p, %p)", uiCount, pTable));
if( pTable )
{
ERRCODE errCode;
if( uiCount )
* uiCount = RDDFUNCSCOUNT;
errCode = hb_rddInherit( pTable, &dbfTable, &dbfSuper, NULL );
hb_retni( errCode );
if( errCode == SUCCESS )
{
/*
* we successfully register our RDD so now we can initialize it
* You may think that this place is RDD init statement, Druzus
*/
s_uiRddId = uiRddId;
}
}
else
hb_retni( FAILURE );
}
#define __PRG_SOURCE__ __FILE__
#ifdef HB_PCODE_VER
#undef HB_PRG_PCODE_VER
#define HB_PRG_PCODE_VER HB_PCODE_VER
#endif
static void hb_dbfRddInit( void * cargo )
{
HB_SYMBOL_UNUSED( cargo );
if( hb_rddRegister( "DBF", RDT_FULL ) > 1 )
{
hb_errInternal( HB_EI_RDDINVALID, NULL, NULL, NULL );
}
}
HB_INIT_SYMBOLS_BEGIN( dbf1__InitSymbols )
{ "_DBF", {HB_FS_PUBLIC|HB_FS_LOCAL}, {HB_FUNCNAME( _DBF )}, NULL },
{ "DBF_GETFUNCTABLE", {HB_FS_PUBLIC|HB_FS_LOCAL}, {HB_FUNCNAME( DBF_GETFUNCTABLE )}, NULL }
HB_INIT_SYMBOLS_END( dbf1__InitSymbols )
HB_CALL_ON_STARTUP_BEGIN( _hb_dbf_rdd_init_ )
hb_vmAtInit( hb_dbfRddInit, NULL );
HB_CALL_ON_STARTUP_END( _hb_dbf_rdd_init_ )
#if defined( HB_PRAGMA_STARTUP )
#pragma startup dbf1__InitSymbols
#pragma startup _hb_dbf_rdd_init_
#elif defined( HB_MSC_STARTUP )
#if defined( HB_OS_WIN_64 )
#pragma section( HB_MSC_START_SEGMENT, long, read )
#endif
#pragma data_seg( HB_MSC_START_SEGMENT )
static HB_$INITSYM hb_vm_auto_dbf1__InitSymbols = dbf1__InitSymbols;
static HB_$INITSYM hb_vm_auto_dbf_rdd_init = _hb_dbf_rdd_init_;
#pragma data_seg()
#endif
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