(FILECREATED " 9-Dec-86 14:56:01" {QV}<NOTECARDS>1.3K>NEXT>RHTPATCH169.;2 23198  

      changes to:  (VARS RHTPATCH169COMS)
		   (FNS NC.MakeLink NC.CreateCrossFileLinkCard)

      previous date: " 9-Dec-86 12:39:07" {QV}<NOTECARDS>1.3K>NEXT>RHTPATCH169.;1)


(* Copyright (c) 1986 by Xerox Corporation. All rights reserved.)

(PRETTYCOMPRINT RHTPATCH169COMS)

(RPAQQ RHTPATCH169COMS ((* * Fixes to crossfilelinks bugs #312, 313 reported by John Tang.)
			  (* * Change to NCREPAIR)
			  (FNS NC.ScavengeDatabaseFile)
			  (* * Change to NCLINKS)
			  (FNS NC.MakeLink)
			  (* * Change to NCCROSSFILELINKS)
			  (FNS NC.CreateCrossFileLinkCard)))
(* * Fixes to crossfilelinks bugs #312, 313 reported by John Tang.)

(* * Change to NCREPAIR)

(DEFINEQ

(NC.ScavengeDatabaseFile
  (LAMBDA (NoteFileOrFileName BadLinkLabelsFlg ListOfBoxesToReconstruct 
			      ListOfCardsNeedingGlobalLinksReconstructed InterestedWindow)
                                                             (* rht: " 9-Dec-86 11:44")

          (* Scavenge the database FileName. Essentially throw away all of the information about From and ToLinks and 
	  recreate them by retrieving the link information from the substance of each card and from the list of global links 
	  from the card.)



          (* * rht 8/9/84: Now calls NC.OpenDatabaseFile to do the file open.)



          (* * rht 7/17/85: Changed so can take a stream argument. Also handles link labels. If BadLinkLabelsFlg is non-nil, 
	  then don't try to read current link labels. Just rebuild them from what's out there. Otherwise, only rebuild if 
	  find new any new ones.)



          (* * fgh 22-Jul-85 Takes a list of bad file box cards and reconstructs the file boxes from the From pointer lists 
	  of all the cards in the NoteFile.)



          (* * fgh 30-Jul-85 Takes a list of cards with bad global links and reconstructs the global links list from the From
	  pointer lists of all the cards in the NoteFile.)



          (* * rht 11/23/85: Updated to handle new notefile and card object formats.)



          (* * rht 12/1/85: Now calls NC.GetMainCardData and NC.GetLinks instead of NC.GetNoteCard.)



          (* * rht 12/19/85: Massive overhaul for sake of speed. Should be wizzier now.)



          (* * fgh 2/4/86 Now works on open NFs. No need to error check since this function should always be called from 
	  earlier phases of the inspect & repaier.)



          (* * fgh 5/21/86 Fixed bug in handling of global links.)



          (* * rht 7/16/86: Added InterestedWindow arg.)



          (* * rht 7/16/86: Now calls NC.PutLinks passing UseOldDatesFlg.)



          (* * rht 9/5/86: Now checks that link is valid before passing it to NC.DelReferencesToCard.)



          (* * rht 10/29/86: Now closes prompt win at end if no filing info to tell.)



          (* * rht 12/9/86: Now calls NC.CardNeedsFilingP to check whether any cards need to be filed in ToBeFiled box.)


    (PROG (NoteFile FileName CardTotal NoteCardNumber OldLinkLabels DiscoveredLinkLabels 
		      ReconstructLinks ReconstructGlobalLinks ToBeFiledCards)

          (* * First, take care of checking stream's validity, etc.)


	    (SETQ FileName (if (type? NoteFile NoteFileOrFileName)
				 then (SETQ NoteFile NoteFileOrFileName)
					(fetch (NoteFile FullFileName) of NoteFileOrFileName)
			       else NoteFileOrFileName))   (* Try to open notefile.)
	    (if (NULL (OPENP FileName))
		then (if (NULL (SETQ NoteFile
				       (NC.OpenDatabaseFile FileName NIL T NIL NIL NIL NIL T T NIL 
							      InterestedWindow)))
			   then (NC.PrintMsg InterestedWindow NIL "Couldn't open " FileName "."
						 (CHARACTER 13)
						 "Repair aborted.")
				  (RETURN NIL)))

          (* * If link labels aren't screwed up, then read them in.)


	    (OR BadLinkLabelsFlg (SETQ OldLinkLabels (NC.RetrieveLinkLabels NoteFile T)))

          (* * Mark every card that needs its global links or substance reconstructed so we don't have to search the lists so
	  much.)


	    (for Card in ListOfCardsNeedingGlobalLinksReconstructed do (NC.SetUserDataProp
									       Card
									       (QUOTE 
								 NeedsGlobalLinksReconstructedFlg)
									       T))
	    (for Box in ListOfBoxesToReconstruct do (NC.SetUserDataProp Box (QUOTE 
									   NeedsReconstructingFlg)
										T))

          (* Read through all NoteCard substances to find actual pointers. Use this to create the To Links list.
	  The list collection function checks to make sure each link is valid.)


	    (SETQ CardTotal (SUB1 (fetch (NoteFile NextIndexNum)
					       NoteFile)))
	    (NC.PrintMsg InterestedWindow T "Rebuilding notefile links." (CHARACTER 13)
			   "Collecting Links for item " 1 " out of " CardTotal ".")
	    (SETQ NoteCardNumber 0)
	    (NC.MapCards
	      NoteFile
	      (FUNCTION (LAMBDA (Card)
		  (BLOCK)
		  (SETQ NoteCardNumber (ADD1 NoteCardNumber))
		  (AND (ZEROP (REMAINDER NoteCardNumber 10))
			 (NC.PrintMsg InterestedWindow T "Rebuilding notefile links." (CHARACTER
					  13)
					"Collecting Links for item " NoteCardNumber " out of " 
					CardTotal "."))
		  (if (NC.FetchUserDataProp Card (QUOTE NeedsReconstructingFlg))
		      then                                 (* Card substance and links will be reconstructed so 
							     no need to try to read substance.)
			     (NC.GetLinks Card)
			     (if (NOT (NC.FetchUserDataProp Card (QUOTE 
								 NeedsGlobalLinksReconstructedFlg)))
				 then (NC.SetUserDataProp Card (QUOTE ScavengerToLinks)
							      (NC.FetchGlobalLinks Card))
					(NC.SetUserDataProp Card (QUOTE ScavengerGlobalLinks)
							      (NC.FetchGlobalLinks Card)))
			     (NC.DeactivateCard Card T)
		    else (NC.GetMainCardData Card)
			   (NC.GetLinks Card)
			   (NC.ActivateCard Card)
			   (if (EQ (NC.FetchStatus Card)
				       (QUOTE ACTIVE))
			       then                        (* Collect links having active destinations.
							     Delete the others.)
				      (NC.SetUserDataProp
					Card
					(QUOTE ScavengerToLinks)
					(NCONC (for Link in (CAR (NC.CollectReferences
									   Card))
						    eachtime (BLOCK)
						    when (if (EQ (NC.FetchStatus
									 (fetch (Link 
										  DestinationCard)
									    of Link))
								       (QUOTE ACTIVE))
							     else (AND (type? Link Link)
									   (NC.DelReferencesToCard
									     Card Link))
								    NIL)
						    collect Link)
						 (if (NC.FetchUserDataProp Card (QUOTE 
								 NeedsGlobalLinksReconstructedFlg))
						   else (NC.SetUserDataProp Card (QUOTE 
									     ScavengerGlobalLinks)
										(NC.FetchGlobalLinks
										  Card))
							  (NC.FetchGlobalLinks Card))))
				      (if (NC.FetchUserDataProp Card (QUOTE 
								 NeedsGlobalLinksReconstructedFlg))
					else (NC.SetUserDataProp Card (QUOTE 
									     ScavengerGlobalLinks)
								     (NC.FetchGlobalLinks Card)))

          (* If there are file boxes to be reconstructed, then look thru the From links to see if this card was filed in one 
	  of the to-be-reconstructed boxes)


				      (AND ListOfBoxesToReconstruct
					     (for Link in (NC.FetchFromLinks Card)
						eachtime (BLOCK)
						when (AND (NC.ChildLinkP Link)
							      (NC.FetchUserDataProp
								(fetch (Link SourceCard)
								   of Link)
								(QUOTE NeedsReconstructingFlg)))
						do (push ReconstructLinks Link)))

          (* If there are global links to be reconstructed, then look thru the From links to see if this card had a global 
	  link from a card whose global links need reconstructing.)


				      (AND ListOfCardsNeedingGlobalLinksReconstructed
					     (for Link in (NC.FetchFromLinks Card)
						eachtime (BLOCK)
						when (AND (NC.GlobalLinkP Link)
							      (NC.FetchUserDataProp
								(fetch (Link SourceCard)
								   of Link)
								(QUOTE 
								 NeedsGlobalLinksReconstructedFlg)))
						do (push ReconstructGlobalLinks Link)))
				      (NC.DeactivateCard Card T))))))

          (* * Reconstruct any cards as requested)


	    (for BoxToReconstruct in ListOfBoxesToReconstruct eachtime (BLOCK)
	       do                                          (* Make a new file box using the given card.)
		    (NC.MakeNoteCard (QUOTE FileBox)
				       NoteFile "Untitled: Reconstructed during repair" T NIL 
				       BoxToReconstruct)

          (* File cards whose from links indicate that they used to be filed in this file box. Also add these new links to 
	  collected ToLinks.)


		    (NC.SetUserDataProp BoxToReconstruct (QUOTE ScavengerToLinks)
					  (APPEND (NC.FetchUserDataProp BoxToReconstruct
									    (QUOTE ScavengerToLinks)
									    )
						    (for Link in ReconstructLinks
						       eachtime (BLOCK)
						       when (NC.SameCardP BoxToReconstruct
									      (fetch (Link 
										       SourceCard)
										 of Link))
						       collect (NC.MakeChildLink
								   (fetch (Link DestinationCard)
								      of Link)
								   BoxToReconstruct NIL))))
                                                             (* Put the card away)
		    (NC.PutMainCardData BoxToReconstruct)
		    (NC.DeactivateCard BoxToReconstruct T))

          (* * Reconstruct any global link lists as required)


	    (for Link in ReconstructGlobalLinks bind ThisCardsToLinks ThisCardsGlobalLinks 
							   SourceCard
	       eachtime (BLOCK)
	       do (SETQ SourceCard (fetch (Link SourceCard) of Link)) 
                                                             (* Add it to the GlobalLinks list for its source card 
							     unless it's already there.)
		    (if (for GlobalLink in (SETQ ThisCardsGlobalLinks (NC.FetchUserDataProp
						     SourceCard
						     (QUOTE ScavengerGlobalLinks)))
			     eachtime (BLOCK) never (NC.SameLinkP Link GlobalLink))
			then (NC.SetUserDataProp SourceCard (QUOTE ScavengerGlobalLinks)
						     (CONS Link ThisCardsGlobalLinks)))
                                                             (* Add it to the source card's ToLinks list unless 
							     it's already there)
		    (if (for ToLink in (SETQ ThisCardsToLinks (NC.FetchUserDataProp
						 SourceCard
						 (QUOTE ScavengerToLinks)))
			     eachtime (BLOCK) never (NC.SameLinkP Link ToLink))
			then (NC.SetUserDataProp SourceCard (QUOTE ScavengerToLinks)
						     (CONS Link ThisCardsToLinks))))

          (* * Compute the From Links list by "inverting" the To Links list)


	    (NC.PrintMsg InterestedWindow T "Repairing NoteFile." (CHARACTER 13)
			   "Inverting links for item " 1 " out of " CardTotal ".")
	    (SETQ NoteCardNumber 0)
	    (NC.MapCards NoteFile (FUNCTION (LAMBDA (Card)
			     (SETQ NoteCardNumber (ADD1 NoteCardNumber))
			     (AND (ZEROP (REMAINDER NoteCardNumber 100))
				    (NC.PrintMsg InterestedWindow T "Repairing NoteFile."
						   (CHARACTER 13)
						   "Inverting links for item " NoteCardNumber 
						   " out of "
						   CardTotal "."))
			     (if (EQ (NC.FetchStatus Card)
					 (QUOTE ACTIVE))
				 then (for Link in (NC.FetchUserDataProp Card (QUOTE 
										 ScavengerToLinks))
					   bind DestinationCard LinkLabel eachtime (BLOCK)
					   do              (* Add this ToLink as a FromLink for the link's 
							     destination card.)
						(NC.SetUserDataProp (SETQ DestinationCard
									(fetch (Link 
										  DestinationCard)
									   of Link))
								      (QUOTE ScavengerFromLinks)
								      (CONS Link
									      (NC.FetchUserDataProp
										DestinationCard
										(QUOTE 
									       ScavengerFromLinks))))
                                                             (* Accumulate the link labels into a list.)
						(if (NOT (FMEMB (SETQ LinkLabel
									(fetch (Link Label)
									   of Link))
								      DiscoveredLinkLabels))
						    then (push DiscoveredLinkLabels LinkLabel)))))
			   ))

          (* * Reset all of the To and From Links lists in the database)


	    (NC.PrintMsg InterestedWindow T "Repairing NoteFile." (CHARACTER 13)
			   "Rewriting links for item " 1 " out of " CardTotal ".")
	    (SETQ NoteCardNumber 0)
	    (NC.MapCards NoteFile (FUNCTION (LAMBDA (Card)
			     (SETQ NoteCardNumber (ADD1 NoteCardNumber))
			     (AND (ZEROP (REMAINDER NoteCardNumber 10))
				    (NC.PrintMsg InterestedWindow T "Repairing NoteFile."
						   (CHARACTER 13)
						   "Rewriting links for item " NoteCardNumber 
						   " out of "
						   CardTotal "."))
			     (if (EQ (NC.FetchStatus Card)
					 (QUOTE ACTIVE))
				 then (NC.SetGlobalLinks Card (NC.FetchUserDataProp
							       Card
							       (QUOTE ScavengerGlobalLinks)))
					(NC.SetToLinks Card (NC.FetchUserDataProp Card
										      (QUOTE 
										 ScavengerToLinks)))
					(NC.SetFromLinks Card (NC.FetchUserDataProp Card
											(QUOTE
											  
									       ScavengerFromLinks)))
                                                             (* Check whether this card isn't filed anywhere.)
					(if (NC.CardNeedsFilingP Card)
					    then (push ToBeFiledCards Card))
					(NC.PutLinks Card T))
                                                             (* Clean any junk off the card.)
			     (NC.DeactivateCard Card T)
			     (NC.SetUserDataPropList Card NIL))))

          (* * File any unfiled cards in the ToBeFiled box.)


	    (if ToBeFiledCards
		then (NC.PrintMsg InterestedWindow T "Filing " (LENGTH ToBeFiledCards)
				      " cards in ToBeFiled box ...")
		       (NCP.FileCards ToBeFiledCards (fetch (NoteFile ToBeFiledCard)
							  of NoteFile)))
                                                             (* Rewrite link labels if we've found any new ones.)
	    (if (LDIFFERENCE DiscoveredLinkLabels OldLinkLabels)
		then (NC.StoreLinkLabels NoteFile (UNION DiscoveredLinkLabels OldLinkLabels)))
                                                             (* Clean up and get out.)
	    (NC.CheckpointDatabase NoteFile T)
	    (NC.ForceDatabaseClose NoteFile)
	    (NC.PrintMsg InterestedWindow T "Repair Completed for " (FULLNAME FileName)
			   ".")
	    (if ToBeFiledCards
		then (NC.PrintMsg InterestedWindow NIL "Filed " (LENGTH ToBeFiledCards)
				      " cards in ToBeFiled box.")
	      else (NC.ClearMsg InterestedWindow T)))))
)
(* * Change to NCLINKS)

(DEFINEQ

(NC.MakeLink
  (LAMBDA (Window LinkLabel DestinationCard SourceCard DisplayMode AnchorMode Message NoDisplayFlg 
		  LinkToInsertAfter CrossFileLinksMode)      (* rht: " 9-Dec-86 14:50")

          (* * Make a link from (OR Window SourceCard) to DestinationCard with linklabel of LinkLabel)



          (* * rht 1/12/85: If need to create a new card, then now shows card type menu near window of SourceID.)



          (* * rht 1/13/85: Added extra args Message and NoDisplayFlg.)



          (* * rht 3/26/85: Added LinkToInsertAfter arg which should be NIL or a link to insert the new To link after.
	  If NIL, then insert at front of ToLinks.)



          (* * kirk 9/23/85: took out GETPROMPTWINDOW call for asknotecardtype)



          (* * kirk: 14Nov85: changed NC.CoerceToID to to NC.CoerceToCard)



          (* * fgh 11/16/85 Changed from PROG to LET and used COND to contyrol returnmed value.)



          (* * fgh 2/5/86 Changed call DefaultLinkDisplayMode to FetchLinkDisplayMode)



          (* * fgh 6/5/86 Now calls AskLinkLabel if LinkLabel arg is NIL)



          (* * rht 7/4/86: Added check for readonly card.)



          (* * kef 7/17/86: Added calls to grab the write permission on the appropriate card parts.)



          (* * kef 7/22/86: Saves the links on the Destination Card now right away, while still holding onto the FROMLINKS 
	  write lock.)



          (* * fgh 8/30/86 Adpated to use NC.IfCardPartNotBusy.)



          (* * rht 9/29/86: Tossed Ken's call to NC.PutFromLinks; It was the cause of too many nasty breaks.
	  Also made syntactic fixes.)



          (* * rht 10/4/86: Now handles cross file links. New arg CrossFileLinksMode determines whether cross-file link will 
	  be two-way, i.e. will destination card know it's being linked to.)



          (* * rht 11/10/86: Now creates new crossfile link if Destination card is a CrossFileLink card that we didn't just 
	  create.)



          (* * rht 11/14/86: Now checks if non-nil DestinationCard before trying to do cross-filelink stuff.)



          (* * pmi 12/5/86: Modified message to NC.SelectNoteCards to mention SHIFT-selection.)



          (* * rht 12/9/86: Throws out JustCreatedFlg marker stuff.)


    (DECLARE (GLOBALVARS NC.SelectingSingleCardMenu NC.NewCrossFileLinksTwoWayFlg))
    (OR SourceCard (SETQ SourceCard (NC.CoerceToCard Window)))
    (AND (NC.CheckForNotReadOnly SourceCard Window "Can't make links in ")
	   (LET (Link Type)
	        (OR Window (SETQ Window (NC.FetchWindow SourceCard)))
	        (OR Message (SETQ Message "Please shift-select the Card or Box to be linked to."))
	        (OR LinkLabel (SETQ LinkLabel (NC.AskLinkLabel Window NIL NIL T NIL)))
	        (OR DestinationCard (SETQ DestinationCard
			(NC.SelectNoteCards T (FUNCTION (LAMBDA (Card)
						  (COND
						    ((NOT (NC.SameCardP Card SourceCard))
						      T)
						    (T (NC.PrintMsg Window T 
							     "A Card/Box cannot link to itself. "
								      (CHARACTER 13)
								      "Selection ignored."
								      (CHARACTER 13))
						       NIL))))
					      NC.SelectingSingleCardMenu SourceCard NIL Message)))
	        (if (EQ DestinationCard (QUOTE *New% Card*))
		    then (SETQ DestinationCard (AND (SETQ Type (NC.AskNoteCardType
							      (WINDOWREGION Window)))
							  (NC.CoerceToCard
							    (NC.MakeNoteCard Type
									       (fetch (Card 
											 NoteFile)
										  of SourceCard)
									       NIL NoDisplayFlg)))))

          (* * If we're trying to link to a CrossFileLink card, then check whether card was just created.
	  If so, then it's the first link, otherwise we make a new CrossFileLink.)


	        (if (AND DestinationCard (NC.CrossFileLinkCardP DestinationCard))
		    then (SETQ DestinationCard (NC.GetCrossFileLinkDestCard DestinationCard))
			   (NC.SetUserDataProp DestinationCard (QUOTE JustCreatedFlg)
						 NIL))
	        (if DestinationCard
		    then (NC.IfCardPartNotBusy
			     DestinationCard
			     (QUOTE FROMLINKS)
			     (NC.IfCardPartNotBusy SourceCard (QUOTE TOLINKS)

          (* * If have cross-file link, then make two new crossfilelink cards, one per notefile. Make global link over there 
	  from crossfilelink card to DestinationCard and local link here from SourceCard to crossfilelink card.)


						   (if (NOT (NC.SameNoteFileP
								  (fetch (Card NoteFile)
								     of SourceCard)
								  (fetch (Card NoteFile)
								     of DestinationCard)))
						       then
							(LET ((CrossFileLinksTwoWayFlg
								(OR (EQ CrossFileLinksMode
									    (QUOTE TWOWAY))
								      (AND (NULL 
									       CrossFileLinksMode)
									     
								    NC.NewCrossFileLinksTwoWayFlg))))
							     (if CrossFileLinksTwoWayFlg
								 then (NC.MakeGlobalLink
									  Window LinkLabel 
									  DestinationCard
									  (
								       NC.CreateCrossFileLinkCard
									    DestinationCard 
									    SourceCard T)
									  DisplayMode))
							     (SETQ DestinationCard
							       (NC.CreateCrossFileLinkCard 
										       SourceCard 
										  DestinationCard 
									  CrossFileLinksTwoWayFlg))))
						   (SETQ Link (create Link
									  UID ←(NC.MakeUID)
									  SourceCard ← SourceCard
									  DestinationCard ← 
									  DestinationCard
									  AnchorMode ← AnchorMode
									  Label ← LinkLabel
									  DisplayMode ←(OR
									    DisplayMode
									    (NC.FetchLinkDisplayMode
									      SourceCard))))
						   (NC.AddToLink Link LinkToInsertAfter)
						   (NC.AddFromLink Link)
						   Link))
		  else NIL)))))
)
(* * Change to NCCROSSFILELINKS)

(DEFINEQ

(NC.CreateCrossFileLinkCard
  (LAMBDA (SourceCard DestCard TwoWayFlg)                    (* rht: " 9-Dec-86 14:50")

          (* * Create a cross file link card in SourceCard's notefile.)



          (* * rht 11/19/86: Now rips off version number from destination notefile hint.)



          (* * rht 12/9/86: No longer records fact that card was "just created.")


    (LET ((DestNoteFile (fetch (Card NoteFile) of DestCard))
	  CrossFileLinkCard)
         (SETQ CrossFileLinkCard (NC.MakeNoteCard (QUOTE CrossFileLink)
						      (fetch (Card NoteFile) of SourceCard)
						      (NC.FetchTitle DestCard)
						      T
						      (create CrossFileLinkSubstance
								CrossFileLinkDestCardUID ←(fetch
								  (Card UID) of DestCard)
								CrossFileLinkDestNoteFileUID ←(fetch
								  (NoteFile UID) of DestNoteFile)
								CrossFileLinkDestFileHint ←(
								  PACKFILENAME (QUOTE VERSION)
										 NIL
										 (QUOTE BODY)
										 (fetch
										   (NoteFile 
										     FullFileName)
										    of DestNoteFile)
										 )
								CrossFileLinkTwoWayFlg ← TwoWayFlg)))
                                                             (* Indicate that card was just created.)
     CrossFileLinkCard)))
)
(PUTPROPS RHTPATCH169 COPYRIGHT ("Xerox Corporation" 1986))
(DECLARE: DONTCOPY
  (FILEMAP (NIL (764 15657 (NC.ScavengeDatabaseFile 774 . 15655)) (15688 21731 (NC.MakeLink 15698 . 
21729)) (21771 23116 (NC.CreateCrossFileLinkCard 21781 . 23114)))))
STOP