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% Copyright (C) 2001-2023 Artifex Software, Inc. % All Rights Reserved. % % This software is provided AS-IS with no warranty, either express or % implied. % % This software is distributed under license and may not be copied, % modified or distributed except as expressly authorized under the terms % of the license contained in the file LICENSE in this distribution. % % Refer to licensing information at http://www.artifex.com or contact % Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco, % CA 94129, USA, for further information. % % A procset to redefine a resource category with a resource map. % Public entries : % Redefine - a procedure for redefining a resource category with a map. % Methods for interpreting the resource map to be provided by client % in the argument dictionary. % % Note that the procedure Redefine is idempotential : % consequtive calls to it will not replace the category methods, % but will merge resource maps. If an interleaving redefinition % needs to cancel the idempotentity, it must remove the entry % /.IsRedefinedWithMap from the category dictionary. % MakeResourceEnumerator - this procedure is useful for % redefining any category. It provides a proper order of instances % and proper stacks during resourceforall. % BindWithCurrentdict - a procedure for generating temporary procedures % from templates, binding them with a local dictionary. % execstack_lookup - a procedure for communicating through the execution stack. % It allows for a callee to get an information from an indirect caller. % The procedures are designed for exeution witout putting % the procset instance onto the dictionary stack. languagelevel 2 .setlanguagelevel currentglobal //true setglobal /MappedCategoryRedefiner 10 dict begin % The procset. currentpacking //false setpacking /InstanceEnumeratorPattern % - InstanceEnumeratorPattern ... { % This is a pattern for enumeration procedure to be built dynamically, % applying BindWithCurrentdict with a temporary dictionary. % The following names will be replaced with specific objects % during BindWithCurrentdict : % en_local_dict - a dictionary for storing the local integer variable 'status'. % scr - the scratch string argument of resourceforall; % proc - the procedure argument of resourceforall; % InstancesStatus - a dictionary that maps resource instance names to their status value; % Category - the category to be enumerated. % When this procedure is called from ResourceForAll, the category is the current dictionary. % We remove it from the dictionary stack before performing the enumeration % to provide the <proc> to write to the underlying dictionary, % and put it back after the enumeration is completed. end { 0 1 2 { en_local_dict exch /status exch put InstancesStatus { en_local_dict /status get eq { scr cvs % ... (Font) proc exec % } { pop } ifelse % ... } forall } for % ... } stopped Category begin { stop } if } bind def % An auxiliary proc for BindWithCurrentdict : /.BindAux % <proc> BindAux <proc> { 0 exec } bind def setpacking /BindWithCurrentdict % <proc> BindWithCurrentdict <proc> { % Make a copy of the given procedure, binding in the values of all names % defined in currentdict. % Caution1 : this code cannot handle procedures that were already % bound recursively. % Caution2 : this code don't bind packedarrays. This was done % intentionally for a termination of the procedure tree. dup length array copy dup length 1 sub -1 0 { 2 copy get % {precopy} i {elem} dup dup type /arraytype eq exch xcheck and { % {precopy} i {elem} //.BindAux exec % {precopy} i {elem_copy} 2 index 3 1 roll put % {precopy} } { dup dup type /nametype eq exch xcheck and { % {precopy} i {elem} currentdict exch .knownget { 2 index 3 1 roll put % {precopy} } { pop } ifelse } { pop pop } ifelse } ifelse % {precopy} } for % {copy} cvx } bind def //.BindAux 0 //BindWithCurrentdict put % bind the recursive call in 'Bind'. /MakeResourceEnumerator % <proc> <scr> <InstancesStatus> MakeResourceEnumerator <Enumerator> { % Build the enumeration procedure : % Since the resourceforall procedure may leave values on the operand stack, % we cannot simply store the enumerator's local data on the stack. % We also cannot use a static dictionary to store local variables, % because of possible recursion in the resourceforall procedure. % To work around this, we create a copy of the enumeration procedure and % bind it dynamically with a temporary dictionary, which contains % local variables for the currently executing instance of resourceforall. % Always place the enumerator in local VM, % because its elements may be in local VM. currentglobal 4 1 roll //false setglobal currentdict % Category 6 dict begin % the temporary dictionary /Category exch def /InstancesStatus exch def /scr exch def /proc exch def /en_local_dict currentdict def //InstanceEnumeratorPattern //BindWithCurrentdict exec % Enumerator /status 0 def % variable for the current status to enumerate - do not bind with it ! end exch setglobal } bind def /execstack_lookup % <object> execstack_lookup <object1> % <object> execstack_lookup null { % Checks whether execution stack contains a procedure starting with <object>, % and retrives the 2nd element of the procedure, % or null if the procedure was not found. % % Since 'execstack' actually renders subarrays of procedures, % the pattern for recognition must be like this : % % { <object> <object1> % CallSomething % } loop % % The solution with 'loop' depends on how GS implements cycles, % so it must not appear in documents, which are required to be interpreter independent. % Any other type of cycles are also acceptable. % If no repitition is really needed, just insert 'exit' into its body. % If <object> <object1> are not needed for the caller, insert "pop pop" after them. % If <object1> is really unuseful, the pattern may be simplified : % % { <object> pop % CallSomething % exit % } loop % % It will retrieve 'pop' or 'null'. % % Note that 2 topmost execstack elements are the execstack_lookup procedure and its caller. % We don't check them. currentglobal //false setglobal % <object> bGlobal //false .countexecstack array //false .execstack % <object> bGlobal [execstack] dup //null exch % <object> bGlobal [execstack] null [execstack] length 3 sub -1 0 { % <object> bGlobal [execstack] null i 2 index exch get % <object> bGlobal [execstack] null proc dup type dup /packedarraytype eq exch /arraytype eq or { dup rcheck { dup length 1 gt { % <object> bGlobal [execstack] null proc dup 0 get % <object> bGlobal [execstack] null proc elem0 5 index eq { % <object> bGlobal [execstack] null proc 1 get % <object> bGlobal [execstack] null object1 exch pop exit % <object> bGlobal [execstack] object1 } { pop } ifelse } { pop % <object> bGlobal [execstack] false } ifelse } { pop % <object> bGlobal [execstack] false } ifelse } { pop % <object> bGlobal [execstack] false } ifelse } for % <object> bGlobal [execstack] bResult exch pop exch setglobal exch pop % bResult } bind def currentpacking //false setpacking /MethodsToRedefine 5 dict begin % Procedures in this dictionary really are patterns for new category methods. % The following names will be replaced with specific objects during BindWithCurrentdict : % .map - the map dictionary; % DefineResource, ResourceStatus, ResourceFileName, FindResource, ResourceForAll % - procedures from the original resource category. /FindResource % <Name> FindResource <dict> { RESMPDEBUG { (resmp FindResource beg ) print dup = } if dup ResourceStatus exec { pop 2 lt } { //false } ifelse % bInVirtualMemory { FindResource exec } { dup dup .map exch .knownget { % /Name /Name <<record>> dup dup /RecordVirtualMethods get /IsActive get exec { 1 index //.getvminstance exec { % /Name /Name <<record>> holder 1 get 1 eq } { //true } ifelse % /Name /Name <<record>> bStatusIs1 4 1 roll % bStatusIs1 /Name /Name <<record>> dup /RecordVirtualMethods get /MakeInstance get exec % bStatusIs1 /Name /Name Instance size 5 1 roll % size bStatusIs1 /Name /Name Instance DefineResource exec % size bStatusIs1 /Name Instance % Make ResourceStatus to return correct values for this instance : % Hack: we replace status values in the instance holder : exch //.getvminstance exec pop % size bStatusIs1 Instance holder dup 5 -1 roll 2 exch put % bStatusIs1 Instance holder 3 2 roll { % Instance holder 1 1 put % Instance } { pop } ifelse % Instance } { % /Name /Name <<record>> pop pop FindResource exec } ifelse } { % /Name /Name pop FindResource exec } ifelse } ifelse RESMPDEBUG { (resmp FindResource end) = } if } .bind def /ResourceStatus % <Name> ResourceStatus <status> <size> true % <Name> ResourceStatus false { RESMPDEBUG { (resmp ResourceStatus beg ) print dup //== exec } if dup ResourceStatus exec { % /Name status size 1 index 2 lt { % In VM - return with it. 3 2 roll pop //true } { % Not in VM. exch pop exch % size /Name dup .map exch .knownget { % size /Name <<record>> dup dup /RecordVirtualMethods get /IsActive get exec { 3 2 roll pop % /Name <<record>> dup /RecordVirtualMethods get /GetSize get exec 2 exch //true } { % size /Name <<record>> pop pop 2 exch //true } ifelse } { % size /Name pop 2 exch //true } ifelse } ifelse } { % /Name dup .map exch .knownget { % /Name <<record>> dup dup /RecordVirtualMethods get /IsActive get exec { dup /RecordVirtualMethods get /GetSize get exec 2 exch //true } { % /Name <<record>> pop pop //false } ifelse } { % /Name pop //false } ifelse } ifelse RESMPDEBUG { (resmp ResourceStatus end) = } if } .bind def /ResourceFileName % <Name> <scratch> ResourceFileName <string> { RESMPDEBUG { (resmp ResourceFileName beg ) print 1 index = } if exch % (scratch) /Name .map 1 index .knownget { % (scratch) /Name <<record>> RESMPDEBUG { (resmp ResourceFileName : have a map record.) = } if dup dup /RecordVirtualMethods get /IsActive get exec { RESMPDEBUG { (resmp ResourceFileName : record is active.) = } if dup /RecordVirtualMethods get /GetFilePath get exec % (string) RESMPDEBUG { (resmp ResourceFileName : retrieving ) print dup = } if } { % (scratch) /Name <<record>> RESMPDEBUG { (resmp ResourceFileName : record is NOT active.) = } if pop exch ResourceFileName exec RESMPDEBUG { (resmp ResourceFileName : retrieving ) print dup = } if } ifelse } { RESMPDEBUG { (resmp ResourceFileName : have NO map record.) = } if exch ResourceFileName exec RESMPDEBUG { (resmp ResourceFileName : retrieving ) print dup = } if } ifelse RESMPDEBUG { (resmp ResourceFileName end) = } if } .bind def /ResourceForAll % <template> <proc> <scratch> ResourceForAll - { RESMPDEBUG { (resmp ResourceForAll beg ) print CategoryName =string cvs print ( ) print 2 index = } if % Create InstancesStatus dictionary : 20 dict % IS - Instances Status 4 1 roll % <<IS>> (templ) {proc} (sctarch) % Check if we are under another ResourceForAll : /.DisableResourceOrdering //execstack_lookup exec //null eq 4 1 roll % <<IS>> bOrder (templ) {proc} (sctarch) % Put underlying resources to the InstancesStatus dictionary : currentdict % the category begin % ResourceForAll removes it locally. 2 index { cvn % <<IS>> bOrder (templ) {proc} (sctarch) /Name 4 index { dup ResourceStatus exec {pop 6 index 3 1 roll put} {pop} ifelse } { 5 index exch 2 put % Don't need the ordering, put '2' as a scratch. } ifelse } 2 index ResourceForAll exec % <<IS>> bOrder (templ) {proc} (sctarch) 4 3 roll pop % <<IS>> (templ) {proc} (sctarch) end % Put .map entries to the InstancesStatus dictionary : 4 -1 roll begin % (templ) {proc} (sctarch) .map { % (templ) {proc} (sctarch) /Name record dup dup /RecordVirtualMethods get /IsActive get exec { pop % (templ) {proc} (sctarch) /Name dup currentdict exch known { pop } { dup 2 index cvs % (templ) {proc} (sctarch) /Name (Name) 4 index .stringmatch { % (templ) {proc} (sctarch) /Name 2 def % It is not in VM. } { pop } ifelse } ifelse } { % (templ) {proc} (sctarch) /Name record pop pop } ifelse } forall % (templ) {proc} (sctarch) % prepare stacks for the enumeration : 3 2 roll pop % {proc} (sctarch) currentdict end % {proc} (scratch) <<IS>> % Make the enumerator and apply it : //MakeResourceEnumerator exec exec RESMPDEBUG { (resmp ResourceForAll end)= } if } .bind def /GetCIDSystemInfoFromMap % <Name> GetCIDSystemInfoFromMap <Name> % <Name> GetCIDSystemInfoFromMap <dict> { RESMPDEBUG { (resmp GetCIDSystemInfoFromMap beg ) print dup = } if % This is a special function for communicating with GetCIDSystemInfo in gs_cidcm.ps . dup .map exch .knownget { RESMPDEBUG { (resmp GetCIDSystemInfoFromMap : have a map record.) = } if dup /RecordVirtualMethods get /GetCSI get exec dup //null ne { RESMPDEBUG { (resmp GetCIDSystemInfoFromMap : retrieving a dict.) = } if exch } if pop } if RESMPDEBUG { (resmp GetCIDSystemInfoFromMap end) = } if } bind def currentdict end def setpacking /Redefine % <OptionsDict> Redefine - { % Before calling this proc, the OptionsDict must specify options for % the catregory to be redefined : % CategoryName - a name of category to redefine; % MapFileName - a string for the resource map file name; % VerifyMap - a procedure : % <raw_map> VerifyMap - % - checks the map for consistency % PreprocessRecord - a procedure : % <map> <Name> <raw_record> PreprocessRecord <map> <Name> <record> true % <map> <Name> <raw_record> PreprocessRecord <map> <Name> <raw_record> false % - converts a map record into a dictionary; % It must add RecordVirtualMethods dictionary to the record : % MakeInstance - a procedure : % <Name> <record> MakeInstance <Name> <Instance> <size> % - converts the record to resource instance; % GetFilePath - a procedure for ResourceFileName : % <scratch> <Name> <record> GetFilePath <filepath> % GetSize - a procedure for ResourceStatus : % <Name> <record> GetSize <size> % GetCSI - a procedure for obtaining CIDSystemInfo dictionary from the record : % <record> GetCSI <CSI> % <record> GetCSI null % IsActive - a procedure for skipping records depending on the current device : % <record> IsActive <bool> % Also it is allowed to contain additional entries for client's needs. % The OptionsDict is also used for storing some local variables. % If a category is being redefined several times with this function, % each redefinition must either use an unique map file, % or the map file should be scanned by the last redefinition % (and must be defined in the last one with /MapFileName). % This happens so because we must accumulate all variants of % methods before scanning the map. We would like to delay % the scanning until all redefinitions are done, but it requires % to implement a queue of "refinish" methods and execute it % at very end of the prelude. begin % OptionsDict CategoryName /Category findresource /OldCategory exch def OldCategory /.IsRedefinedWithMap known { % Already redefined with map - don't redefine, but enhance the map. OldCategory /NewCategory exch def } { % Redefine with a new category instance. OldCategory dup length dict dup /.PreprocessRecord 4 dict put copy /NewCategory exch def } ifelse % Provide the 'or' logic for PreprocessRecord, % to allow different record types to be mixed in a single map file. % We do this with building a dictionary of PreprocessRecord procedures, % which come from different calls to Redefine : NewCategory /.PreprocessRecord get dup length % <<pr>> l currentdict /PreprocessRecord get .growput currentdict /MapFileName known { MapFileName .libfile { 1 dict begin /; {} def mark exch cvx exec .dicttomark % <<map>> end dup VerifyMap % <<map>> } { QUIET not { currentdict /IsMapFileOptional .knownget not { //false } if not { (Warning: the map file ) print dup =string cvs print ( was not found.) = } if } if pop 0 dict % <<map>> } ifelse } { currentdict /.map .knownget not { 0 dict % <<map>> } if } ifelse % Preprocess entries : dup NewCategory /.PreprocessRecord get % <<map>> <<map>> <<pr>> 3 1 roll { % <<pr>> <<map>> /Name raw_record //false 3 1 roll % <<pr>> <<map>> false /Name raw_record 4 index { % <<pr>> <<map>> false /Name raw_record i {pr} exch pop % <<pr>> <<map>> false /Name raw_record {pr} exec { % <<pr>> <<map>> false /Name record 3 -1 roll pop //true 3 1 roll % <<pr>> <<map>> true /Name record exit } if % <<pr>> <<map>> false /Name raw_record } forall 3 2 roll { % <<pr>> <<map>> /Name record 2 index 3 1 roll put % <<pr>> <<map>> } { exch % <<pr>> <<map>> raw_record /Name (Incorrect record ) print =string cvs print ( of the map file ) print MapFileName =string cvs print (.) = end % Pops OptionsDict from dstack. pop pop pop % /Redefine cvx /undefinedresource signalerror } ifelse } forall % <<pr>> <<map>> exch pop % <<map>> % Add the map : OldCategory /.IsRedefinedWithMap known { % <<map>> % Just add to the old map : OldCategory /.map get copy pop % } { % <<map>> % Store the map to both the category and OptionsDict : dup NewCategory exch /.map exch put /.map exch def % } ifelse OldCategory /.IsRedefinedWithMap known not { % Copy old methods to OptionsDict : [ /DefineResource /ResourceStatus /ResourceFileName /FindResource /ResourceForAll ] { dup OldCategory exch get def } forall % Build new methods : //MethodsToRedefine { //BindWithCurrentdict exec NewCategory 3 1 roll put } forall CategoryName /CIDFont ne { NewCategory /GetCIDSystemInfoFromMap undef % This is some ugly, sorry. } if % Redefine the category : NewCategory /.IsRedefinedWithMap //true put CategoryName NewCategory /Category defineresource pop } if end % OptionsDict } bind executeonly def currentdict /PutPreprocessRecord .undef currentdict end /ProcSet defineresource pop setglobal .setlanguagelevel
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