* HTML/JS Resource support

git-svn-id: trunk@43317 -

.gitattributes

@@ -8164,10 +8164,13 @@ packages/pastojs/src/pas2jsfileutilsunix.inc svneol=native#text/plain
 packages/pastojs/src/pas2jsfileutilswin.inc svneol=native#text/plain
 packages/pastojs/src/pas2jsfs.pp svneol=native#text/plain
 packages/pastojs/src/pas2jsfscompiler.pp svneol=native#text/plain
+packages/pastojs/src/pas2jshtmlresources.pp svneol=native#text/plain
+packages/pastojs/src/pas2jsjsresources.pp svneol=native#text/plain
 packages/pastojs/src/pas2jslibcompiler.pp svneol=native#text/plain
 packages/pastojs/src/pas2jslogger.pp svneol=native#text/plain
 packages/pastojs/src/pas2jspcucompiler.pp svneol=native#text/plain
 packages/pastojs/src/pas2jspparser.pp svneol=native#text/plain
+packages/pastojs/src/pas2jsresources.pp svneol=native#text/plain
 packages/pastojs/src/pas2jsresstrfile.pp svneol=native#text/plain
 packages/pastojs/src/pas2jsuseanalyzer.pp svneol=native#text/plain
 packages/pastojs/src/pas2jsutils.pp svneol=native#text/plain

packages/pastojs/src/pas2jscompiler.pp

@@ -38,7 +38,7 @@ uses
   Classes, SysUtils, contnrs,
   jsbase, jstree, jswriter, JSSrcMap, fpjson,
   PScanner, PParser, PasTree, PasResolver, PasResolveEval, PasUseAnalyzer,
-  pas2jsresstrfile,
+  pas2jsresstrfile, pas2jsresources, pas2jshtmlresources, pas2jsjsresources,
   FPPas2Js, FPPJsSrcMap, Pas2jsLogger, Pas2jsFS, Pas2jsPParser, Pas2jsUseAnalyzer;
 
 const
@@ -150,11 +150,14 @@ type
     rvcUnit
     );
   TP2JSResourceStringFile = (rsfNone,rsfUnit,rsfProgram);
+  TResourceMode = (rmNone,rmHTML,rmJS);
 
 const
   DefaultP2jsCompilerOptions = [coShowErrors,coSourceMapXSSIHeader,coUseStrict];
   DefaultP2JSResourceStringFile = rsfProgram;
   DefaultP2jsRTLVersionCheck = rvcNone;
+  DefaultResourceMode = rmHTML;
+
   coShowAll = [coShowErrors..coShowDebug];
   coO1Enable = [coEnumValuesAsNumbers];
   coO1Disable = [coKeepNotUsedPrivates,coKeepNotUsedDeclarationsWPO];
@@ -350,6 +353,7 @@ type
     FPCUFilename: string;
     FPCUSupport: TPCUSupport;
     FReaderState: TPas2jsReaderState;
+    FResourceHandler: TPas2jsResourceHandler;
     FScanner: TPas2jsPasScanner;
     FShowDebug: boolean;
     FUnitFilename: string;
@@ -357,6 +361,7 @@ type
     FUsedBy: array[TUsedBySection] of TFPList; // list of TPas2jsCompilerFile
     function GetUsedBy(Section: TUsedBySection; Index: integer): TPas2jsCompilerFile;
     function GetUsedByCount(Section: TUsedBySection): integer;
+    procedure HandleResources(Sender: TObject; const aFileName: String; aOptions: TStrings);
     function OnConverterIsElementUsed(Sender: TObject; El: TPasElement): boolean;
     function OnConverterIsTypeInfoUsed(Sender: TObject; El: TPasElement): boolean;
     procedure OnPasResolverLog(Sender: TObject; const Msg: String);
@@ -403,6 +408,7 @@ type
     function GetModuleName: string;
     class function GetFile(aModule: TPasModule): TPas2jsCompilerFile;
   public
+    Property ResourceHandler : TPas2jsResourceHandler Read FResourceHandler Write FResourceHandler;
     property PasFileName: String Read FPasFileName;
     property PasUnitName: string read FPasUnitName write FPasUnitName;// unit name in source, initialized from UnitFilename
     property Converter: TPasToJSConverter read FConverter;
@@ -497,6 +503,8 @@ type
     FSrcMapSourceRoot: string;
     FUnits: TPasAnalyzerKeySet; // set of TPas2jsCompilerFile, key is PasUnitName
     FWPOAnalyzer: TPas2JSAnalyzer;
+    FResourceMode : TResourceMode;
+    FResources : TPas2JSResourceHandler;
     FResourceStrings : TResourceStringsFile;
     FResourceStringFile :  TP2JSResourceStringFile;
     procedure AddInsertJSFilename(const aFilename: string);
@@ -551,6 +559,7 @@ type
     procedure SetWriteMsgToStdErr(const AValue: boolean);
     procedure WriteJSToFile(const MapFileName: string; aFileWriter: TPas2JSMapper);
     procedure WriteResourceStrings(aFileName: String);
+    procedure WriteResources(aFileName: String);
     procedure WriteSrcMap(const MapFileName: string; aFileWriter: TPas2JSMapper);
   private
     procedure AddDefinesForTargetPlatform;
@@ -561,6 +570,7 @@ type
   private
     // params, cfg files
     FCurParam: string;
+    FResourceOutputFile: String;
     procedure LoadConfig(CfgFilename: string);
     procedure ReadEnvironment;
     procedure ReadParam(Param: string; Quick, FromCmdLine: boolean);
@@ -603,7 +613,7 @@ type
     procedure CreateJavaScript(aFile: TPas2jsCompilerFile;
       Checked: TPasAnalyzerKeySet { set of TPas2jsCompilerFile, key is UnitFilename });
     procedure FinishSrcMap(SrcMap: TPas2JSSrcMap); virtual;
-    // WriteSingleJSFile does not
+    // WriteSingleJSFile does not recurse
     procedure WriteSingleJSFile(aFile: TPas2jsCompilerFile; CombinedFileWriter: TPas2JSMapper);
     // WriteJSFiles recurses uses clause
     procedure WriteJSFiles(aFile: TPas2jsCompilerFile;
@@ -618,6 +628,8 @@ type
     function GetExitCode: Longint; virtual;
     procedure SetExitCode(Value: Longint); virtual;
     Procedure SetWorkingDir(const aDir: String); virtual;
+    Procedure CreateResourceSupport; virtual;
+
   public
     constructor Create; virtual;
     destructor Destroy; override;
@@ -698,6 +710,8 @@ type
     property SrcMapBaseDir: string read FSrcMapBaseDir write SetSrcMapBaseDir; // includes trailing pathdelim
     property Namespaces: TStringList read FNamespaces;
     property NamespacesFromCmdLine: integer read FNamespacesFromCmdLine;
+    Property ResourceMode : TResourceMode Read FResourceMode Write FResourceMode;
+    Property ResourceOutputFile : String Read FResourceOutputFile Write FResourceOutputFile;
     // can be set optionally, will be freed by compiler
     property ConfigSupport: TPas2JSConfigSupport Read FConfigSupport Write FConfigSupport;
     property PostProcessorSupport: TPas2JSPostProcessorSupport Read FPostProcessorSupport Write FPostProcessorSupport;
@@ -1052,6 +1066,7 @@ begin
   Scanner.LogEvents:=PascalResolver.ScannerLogEvents;
   Scanner.OnLog:=@OnScannerLog;
   Scanner.OnFormatPath:=@Compiler.FormatPath;
+  Scanner.RegisterResourceHandler('*',@HandleResources);
 
   // create parser (Note: this sets some scanner options to defaults)
   FParser := TPas2jsPasParser.Create(Scanner, FileResolver, PascalResolver);
@@ -1147,6 +1162,13 @@ begin
   Result:=FUsedBy[Section].Count;
 end;
 
+procedure TPas2jsCompilerFile.HandleResources(Sender: TObject; const aFileName: String; aOptions: TStrings);
+begin
+  // maybe emit message ?
+  FResourceHandler.StartUnit(PasModule.Name);
+  FResourceHandler.HandleResource(aFileName,aOptions);
+end;
+
 function TPas2jsCompilerFile.OnConverterIsElementUsed(Sender: TObject;
   El: TPasElement): boolean;
 begin
@@ -1506,6 +1528,8 @@ begin
     Converter.OnIsElementUsed:=@OnConverterIsElementUsed;
     Converter.OnIsTypeInfoUsed:=@OnConverterIsTypeInfoUsed;
     FJSModule:=Converter.ConvertPasElement(PasModule,PascalResolver);
+    if FResourceHandler.Outputmode=romJS then
+      FJSModule:=FResourceHandler.WriteJS(PasUnitName,FJSModule);
   except
     on E: ECompilerTerminate do
       raise;
@@ -2633,6 +2657,55 @@ begin
 
 end;
 
+procedure TPas2jsCompiler.WriteResources(aFileName: String);
+
+Var
+  {$IFDEF Pas2js}
+  buf: TJSArray;
+  {$ELSE}
+  buf: TMemoryStream;
+  {$ENDIF}
+  S : TJSONStringType;
+begin
+    Log.LogMsg(nWritingFile,[FullFormatPath(aFilename)],'',0,0,False);
+    try
+      {$IFDEF Pas2js}
+      buf:=TJSArray.new;
+      {$ELSE}
+      buf:=TMemoryStream.Create;
+      {$ENDIF}
+      try
+        S:=FResources.AsString;
+        {$ifdef pas2js}
+        buf.push(S);
+        {$else}
+        buf.Write(S[1],length(S));
+        {$endif}
+        FS.SaveToFile(buf,aFilename);
+      finally
+        {$IFDEF Pas2js}
+        buf:=nil;
+        {$ELSE}
+        buf.Free;
+        {$ENDIF}
+      end;
+    except
+      on E: Exception do begin
+        if ShowDebug then
+          Log.LogExceptionBackTrace(E);
+        {$IFDEF FPC}
+        if E.Message<>SafeFormat(SFCreateError,[aFileName]) then
+        {$ENDIF}
+          Log.LogPlain('Error: '+E.Message);
+        Log.LogMsg(nUnableToWriteFile,[FullFormatPath(aFilename)]);
+        Terminate(ExitCodeWriteError);
+      end
+      {$IFDEF Pas2js}
+      else HandleJSException('[20181031190737] TPas2jsCompiler.WriteJSFiles',JSExceptValue);
+      {$ENDIF}
+    end;
+end;
+
 procedure TPas2jsCompiler.WriteSingleJSFile(aFile: TPas2jsCompilerFile; CombinedFileWriter: TPas2JSMapper);
 
   Procedure WriteToStandardOutput(aFileWriter : TPas2JSMapper);
@@ -2674,7 +2747,7 @@ procedure TPas2jsCompiler.WriteSingleJSFile(aFile: TPas2jsCompilerFile; Combined
 Var
   aFileWriter : TPas2JSMapper;
   isSingleFile : Boolean;
-  MapFilename : String;
+  ResFileName,MapFilename : String;
 
 begin
   aFileWriter:=CombinedFileWriter;
@@ -2685,11 +2758,16 @@ begin
       begin
       aFileWriter:=CreateFileWriter(aFile,'');
       if aFile.IsMainFile and Not AllJSIntoMainJS then
+        begin
         InsertCustomJSFiles(aFileWriter);
+        if FResources.OutputMode=romExtraJS then
+          aFileWriter.WriteFile(FResources.AsString,GetResolvedMainJSFile);
+        end;
       end;
 
     if FResourceStringFile<>rsfNone then
       AddUnitResourceStrings(aFile);
+    FResources.DoneUnit(aFile.isMainFile);
     EmitJavaScript(aFile,aFileWriter);
 
 
@@ -2719,6 +2797,16 @@ begin
       if (FResourceStringFile=rsfUnit) or (aFile.IsMainFile and (FResourceStringFile<>rsfNone)) then
         if FResourceStrings.StringsCount>0 then
           WriteResourceStrings(ChangeFileExt(aFileWriter.DestFileName,'.jrs'));
+//      Writeln('IsSingleFile ',isSingleFile,' mainfile: ',aFile.IsMainFile,' filename: ', aFileWriter.DestFileName);
+      if aFile.isMainFile and (FResources.OutputMode=romFile) and (FResources.ResourceCount>0) then
+        begin
+        ResFileName:=FResourceOutputFile;
+        if ResFileName='' then
+          // default is projectname-res.ext, to avoid projectname.html, used in web projects in Lazarus IDE
+          ResFileName:=ChangeFileExt(aFileWriter.DestFileName,'-res'+FResources.OutputFileExtension);
+        WriteResources(ResFileName);
+        end;
+
       // write source map
       if aFileWriter.SrcMap<>nil then
         WriteSrcMap(MapFileName,aFileWriter);
@@ -2759,17 +2847,21 @@ begin
   if Checked.ContainsItem(aFile) then exit;
   Checked.Add(aFile);
 
+
   aFileWriter:=CombinedFileWriter;
   if AllJSIntoMainJS and (aFileWriter=nil) then
     begin
     // create CombinedFileWriter
     aFileWriter:=CreateFileWriter(aFile,GetResolvedMainJSFile);
     InsertCustomJSFiles(aFileWriter);
+    if FResources.OutputMode=romExtraJS then
+      aFileWriter.WriteFile(FResources.AsString,GetResolvedMainJSFile);
     end;
   Try
     // convert dependencies
     CheckUsesClause(aFileWriter,aFile.GetPasMainUsesClause);
     CheckUsesClause(aFileWriter,aFile.GetPasImplUsesClause);
+
     // Write me...
     WriteSingleJSFile(aFile,aFileWriter);
   finally
@@ -2879,6 +2971,15 @@ begin
   if aDir='' then ;
 end;
 
+procedure TPas2jsCompiler.CreateResourceSupport;
+begin
+  Case FResourceMode of
+    rmNone : FResources:=TNoResources.Create(FS);
+    rmHTML : FResources:=THTMLResourceLinkHandler.Create(FS);
+    rmJS : FResources:=TJSResourceHandler.Create(FS);
+  end;
+end;
+
 procedure TPas2jsCompiler.Terminate(TheExitCode: integer);
 begin
   ExitCode:=TheExitCode;
@@ -3442,6 +3543,27 @@ begin
     else
       ParamFatal('invalid resource string file format (-Jr) "'+aValue+'"');
     end;
+  'R': // -JR<...>
+    begin
+    I:=Pos('=',aValue);
+    if I=0 then
+      I:=Length(aValue)+1;
+    S:=Copy(aValue,1,I-1);
+    if S='' then
+      ParamFatal('missing value for -JR option')
+    else if (S='none') then
+      FResourceMode:=rmNone
+    else if (S='js') then
+      FResourceMode:= rmJS
+    else if (S='html') then
+      begin
+      FResourceMode:=rmHTML;
+      S:=Copy(aValue,I+1,Length(aValue)-I);
+      FResourceOutputFile:=S;
+      if (FResourceOutputFile<>'') and (ExtractFileExt(FResourceOutputFile)='') then
+        FResourceOutputFile:=FResourceOutputFile+'.html';
+      end;
+    end;
   'u': // -Ju<foreign path>
     if not Quick then
       begin
@@ -4028,6 +4150,7 @@ begin
 
   FFiles:=CreateSetOfCompilerFiles(kcFilename);
   FUnits:=CreateSetOfCompilerFiles(kcUnitName);
+  FResourceMode:=DefaultResourceMode;
   FResourceStrings:=TResourceStringsFile.Create;
   FReadingModules:=TFPList.Create;
   InitParamMacros;
@@ -4323,6 +4446,9 @@ begin
     for i:=0 to ParamList.Count-1 do
       ReadParam(ParamList[i],false,true);
 
+    // At this point we know what kind of resources we must use
+    CreateResourceSupport;
+
     // now we know, if the logo can be displayed
     if ShowLogo then
       WriteLogo;
@@ -4514,6 +4640,10 @@ begin
   w('     -Jrnone: Do not write resource string file');
   w('     -Jrunit: Write resource string file per unit with all resource strings');
   w('     -Jrprogram: Write resource string file per program with all used resource strings in program');
+  w('   -Jr<x> Control writing of linked resources');
+  w('     -JRnone: Do not write resources');
+  w('     -JRjs: Write resources in Javascript structure');
+  w('     -JRhtml[=filename] : Write resources as preload links in HTML file (default is projectfile-res.html)');
   w('   -Jpcmd<command>: Run postprocessor. For each generated js execute command passing the js as stdin and read the new js from stdout. This option can be added multiple times to call several postprocessors in succession.');
   w('   -Ju<x>: Add <x> to foreign unit paths. Foreign units are not compiled.');
   WritePrecompiledFormats;
@@ -4809,6 +4939,7 @@ begin
     aPasTree.ParserLogEvents:=aPasTree.ParserLogEvents+[pleInterface,pleImplementation];
 
   // scanner
+  aFile.ResourceHandler:=FResources;;
   aFile.CreateScannerAndParser(FS.CreateResolver);
 
   if ShowDebug then

packages/pastojs/src/pas2jsfilecache.pp

@@ -228,6 +228,7 @@ type
     FOnReadFile: TPas2jsReadFileEvent;
     FOnWriteFile: TPas2jsWriteFileEvent;
     FResetStamp: TChangeStamp;
+    FResourcePaths: TStringList;
     FUnitPaths: TStringList;
     FUnitPathsFromCmdLine: integer;
     FPCUPaths: TStringList;
@@ -257,6 +258,7 @@ type
     function FindCustomJSFileName(const aFilename: string): String; override;
     function FindUnitJSFileName(const aUnitFilename: string): String; override;
     function FindUnitFileName(const aUnitname, InFilename, ModuleDir: string; out IsForeign: boolean): String; override;
+    function FindResourceFileName(const aFilename, ModuleDir: string): String; override;
     function FindIncludeFileName(const aFilename, ModuleDir: string): String; override;
     function AddIncludePaths(const Paths: string; FromCmdLine: boolean; out ErrorMsg: string): boolean;
     function AddUnitPaths(const Paths: string; FromCmdLine: boolean; out ErrorMsg: string): boolean;
@@ -286,6 +288,7 @@ type
   public
     property BaseDirectory: string read FBaseDirectory write SetBaseDirectory; // includes trailing pathdelim
     property ForeignUnitPaths: TStringList read FForeignUnitPaths;
+    property ResourcePaths : TStringList read FResourcePaths;
     property ForeignUnitPathsFromCmdLine: integer read FForeignUnitPathsFromCmdLine;
     property IncludePaths: TStringList read FIncludePaths;
     property IncludePathsFromCmdLine: integer read FIncludePathsFromCmdLine;
@@ -1453,6 +1456,7 @@ begin
   FIncludePaths:=TStringList.Create;
   FForeignUnitPaths:=TStringList.Create;
   FUnitPaths:=TStringList.Create;
+  FResourcePaths:=TStringList.Create;
   FFiles:=TPasAnalyzerKeySet.Create(
     {$IFDEF Pas2js}
     @Pas2jsCachedFileToKeyName,@PtrFilenameToKeyName
@@ -1977,6 +1981,50 @@ begin
   Result:='';
 end;
 
+function TPas2jsFilesCache.FindResourceFileName(const aFilename, ModuleDir: string): String;
+
+var
+  SearchedDirs: TStringList;
+
+  function SearchInDir(Dir: string; var Filename: string): boolean;
+  // search in Dir for pp, pas, p times given case, lower case, upper case
+  begin
+    Dir:=IncludeTrailingPathDelimiter(Dir);
+    if IndexOfFile(SearchedDirs,Dir)>=0 then exit(false);
+    SearchedDirs.Add(Dir);
+    if SearchLowUpCase(Filename) then exit(true);
+    Result:=false;
+  end;
+
+var
+  i: Integer;
+
+begin
+  //writeln('TPas2jsFilesCache.FindUnitFileName "',aUnitname,'" ModuleDir="',ModuleDir,'"');
+  Result:='';
+  SearchedDirs:=TStringList.Create;
+  try
+    Result:=SetDirSeparators(aFilename);
+
+    // First search in ModuleDir
+    if SearchInDir(ModuleDir,Result) then
+      exit;
+
+    // Then in resource paths
+    for i:=0 to ResourcePaths.Count-1 do
+      if SearchInDir(ResourcePaths[i],Result) then
+        exit;
+    // Not sure
+    // finally search in unit paths
+    // for i:=0 to UnitPaths.Count-1 do
+    //  if SearchInDir(UnitPaths[i],Result) then exit;
+  finally
+    SearchedDirs.Free;
+  end;
+
+  Result:='';
+end;
+
 function TPas2jsFilesCache.FindUnitJSFileName(const aUnitFilename: string): String;
 
 begin

packages/pastojs/src/pas2jsfs.pp

@@ -97,6 +97,7 @@ Type
     function FindSourceFileName(const aFilename: string): String; virtual; abstract;
   Public
     // Public Abstract. Must be overridden
+    function FindResourceFileName(const aFilename, ModuleDir: string): String; virtual; abstract;
     function FindIncludeFileName(const aFilename, ModuleDir: string): String; virtual; abstract;
     function LoadFile(Filename: string; Binary: boolean = false): TPas2jsFile; virtual; abstract;
     Function FileExists(Const aFileName: String): Boolean; virtual; abstract;
@@ -164,6 +165,7 @@ Type
   public
     constructor Create(aFS: TPas2jsFS); reintroduce;
     // Redirect all calls to FS.
+    function FindResourceFileName(const aFilename: string): String; override;
     function FindIncludeFileName(const aFilename: string): String; override;
     function FindIncludeFile(const aFilename: string): TLineReader; override;
     function FindSourceFile(const aFilename: string): TLineReader; override;
@@ -430,9 +432,15 @@ end;
 
 constructor TPas2jsFSResolver.Create(aFS: TPas2jsFS);
 begin
+  Inherited Create;
   FFS:=aFS;
 end;
 
+function TPas2jsFSResolver.FindResourceFileName(const aFilename: string): String;
+begin
+  Result:=FS.FindResourceFileName(aFilename,BaseDirectory);
+end;
+
 function TPas2jsFSResolver.FindIncludeFileName(const aFilename: string): String;
 
 begin

packages/pastojs/src/pas2jshtmlresources.pp

@@ -0,0 +1,110 @@
+unit pas2jshtmlresources;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, pas2jsResources, pas2jsFS;
+
+Type
+
+  { THTMLResourceLinkHandler }
+
+  THTMLResourceLinkHandler = Class(TPas2jsResourceHandler)
+  Private
+    FLinkType: string;
+    FPrefix: String;
+    FResources : tstrings;
+  Protected
+    function GetResourceCount: Integer; override;
+    function GetAsString: String; override;
+    Function CreateDataLink(Const aResourceName,aFormat,aData : String) : String;
+  Public
+    Constructor Create(aFS : TPas2JSFS); override;
+    Class Function OutputMode : TResourceOUtputMode; override;
+    Class Function OutputFileExtension : String; override;
+    Procedure HandleResource (aFileName : string; Options : TStrings); override;
+    Procedure ClearUnit; override;
+    Procedure DoneUnit(IsMainFile : Boolean); override;
+    destructor Destroy; override;
+    // ID is IDPrefix-resourcename. The default Prefix is 'resource'
+    Property IDPrefix : String Read FPrefix Write FPrefix;
+    Property LinkType : string Read FLinkType Write FLinkType;
+    Property Resources : TStrings Read FResources;
+  end;
+
+implementation
+
+{ THTMLResourceLinkHandler }
+
+function THTMLResourceLinkHandler.GetResourceCount: Integer;
+begin
+  Result:=FResources.Count;
+end;
+
+function THTMLResourceLinkHandler.GetAsString: String;
+begin
+  Result:=FResources.Text;
+end;
+
+function THTMLResourceLinkHandler.CreateDataLink(const aResourceName, aFormat, aData: String): String;
+begin
+  Result:=Format('<link rel="%s" id="%s-%s" data-unit="%s" href="data:%s;base64,%s" />',[linkType,IDPrefix,aResourceName,CurrentUnitName,aFormat,aData]);
+end;
+
+procedure THTMLResourceLinkHandler.HandleResource(aFileName: string; Options: TStrings);
+
+Var
+  S : String;
+  aFormat,ResourceName : String;
+
+
+begin
+  S:=GetFileAsBase64(aFileName);
+  aFormat:=GetFormat(aFileName,Options);
+  ResourceName:=Options.Values['name'];
+  if ResourceName='' then
+    ResourceName:=ChangeFileExt(ExtractFileName(aFileName),'');
+  Resources.Add(CreateDataLink(ResourceName,aFormat,S))
+end;
+
+constructor THTMLResourceLinkHandler.Create(aFS: TPas2JSFS);
+begin
+  inherited Create(aFS);
+  FResources:=TStringList.Create;
+  IDPrefix:='resource';
+  LinkType:='preload';
+end;
+
+class function THTMLResourceLinkHandler.OutputMode: TResourceOutputMode;
+begin
+  Result:=romFile;
+end;
+
+
+class function THTMLResourceLinkHandler.OutputFileExtension: String;
+begin
+  Result:='.html';
+end;
+
+procedure THTMLResourceLinkHandler.ClearUnit;
+begin
+  inherited ClearUnit;
+  FResources.Clear;
+end;
+
+procedure THTMLResourceLinkHandler.DoneUnit(IsMainFile : Boolean);
+begin
+  // Do no call inherited, it will clear the list
+end;
+
+
+destructor THTMLResourceLinkHandler.Destroy;
+begin
+  FreeAndNil(FResources);
+  inherited Destroy;
+end;
+
+end.
+

packages/pastojs/src/pas2jsjsresources.pp

@@ -0,0 +1,103 @@
+unit pas2jsjsresources;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, pas2jsResources, pas2jsFS;
+
+Type
+
+  { TJSResourceLinkHandler }
+
+  { TJSResourceHandler }
+
+  TJSResourceHandler = Class(TPas2jsResourceHandler)
+  Private
+    FResources : TStrings;
+    function GetResourceJSStatement(aFileName: String; Options: TStrings): String;
+  Protected
+    function GetResourceCount: Integer; override;
+    function GetAsString: String; override;
+  Public
+    Constructor Create(aFS : TPas2JSFS); override;
+    Class Function OutputMode : TResourceOutputMode; override;
+    Class Function OutputFileExtension : String; override;
+    Procedure HandleResource (aFileName : string; Options : TStrings); override;
+    destructor Destroy; override;
+    Property Resources : TStrings Read FResources;
+  end;
+
+implementation
+
+{ TJSResourceHandler }
+
+function TJSResourceHandler.GetResourceCount: Integer;
+begin
+  Result:=FResources.Count;
+end;
+
+function TJSResourceHandler.GetAsString: String;
+
+Var
+  I : Integer;
+  N,V : String;
+
+begin
+  Result:='';
+  For I:=0 to FResources.Count-1 do
+    begin
+    FResources.GetNameValue(I,N,V);
+    Result:=Result+V+#10;
+    end;
+end;
+
+constructor TJSResourceHandler.Create(aFS: TPas2JSFS);
+begin
+  inherited Create(aFS);
+  FResources:=TStringList.Create;
+end;
+
+class function TJSResourceHandler.OutputMode: TResourceOutputMode;
+begin
+  Result:=romExtraJS;
+end;
+
+class function TJSResourceHandler.OutputFileExtension: String;
+begin
+  Result:='.js';
+end;
+
+Function TJSResourceHandler.GetResourceJSStatement(aFileName : String; Options: TStrings) : String;
+
+Const
+  SAddResource = 'rtl.addResource({name: "%s", unit: "%s", format: "%s", encoding: "base64", data: "%s"});';
+
+Var
+  aFormat,aName,aData : String;
+
+begin
+  aData:=GetFileAsBase64(aFileName);
+  aFormat:=GetFormat(aFileName,Options);
+  aName:=Options.Values['name'];
+  if aName='' then
+    aName:=ChangeFileExt(ExtractFileName(aFileName),'');
+  Result:=Format(SAddResource,[aName,CurrentUnitName,aFormat,aData]);
+end;
+
+procedure TJSResourceHandler.HandleResource(aFileName: string; Options: TStrings);
+begin
+  // PRepending unit name allows to extract easier all resources for a single unit
+  FResources.Add(CurrentUnitName+'='+GetResourceJSStatement(aFileName,Options));
+end;
+
+
+destructor TJSResourceHandler.Destroy;
+begin
+  FreeAndNil(FResources);
+  inherited Destroy;
+end;
+
+end.
+

packages/pastojs/src/pas2jsresources.pp

@@ -0,0 +1,164 @@
+unit pas2jsresources;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, pas2jsfs, jsTree;
+
+Type
+  TResourceScopeMode = (rmProgram,rmUnit);
+
+  { TPas2jsResourceHandler }
+  TResourceOutputMode = (romNone,romJS,romFile,romExtraJS);
+  TPas2jsResourceHandler = class(TObject)
+  private
+    FCurrentUnitName: String;
+    FFS: TPas2JSFS;
+  Protected
+    // Must be overridden
+    function GetResourceCount: Integer; virtual; abstract;
+    // Content of file, if file based.
+    function GetAsString: String; virtual; abstract;
+    // Detect some common formats
+    Function GetFormat(const aFileName : string; aOptions : TStrings) : string; virtual;
+  Public
+    Constructor Create(aFS : TPas2JSFS); virtual;
+    // Called for every found resource
+    Procedure HandleResource (aFileName : string; Options : TStrings); virtual; abstract;
+    // Extension of output file, if file based
+    Class Function OutputFileExtension : String; virtual;
+    // True if output is file based (i.e. written to separate file)
+    Class Function OutputMode : TResourceOutputMode; virtual; abstract;
+    // Load resource file. Can be used in descendents
+    Function LoadFile(aFileName : string) : TPas2jsFile;
+    // Load resource file and encode as base64 string. Can be used in descendents
+    Function GetFileAsBase64(aFileName : string)  : string;
+    // This is called for every unit.
+    Procedure StartUnit(Const aUnitName : String); virtual;
+    // This is called at the start of every unit if OutputIsUnitBased is true.
+    Procedure ClearUnit; virtual;
+    // This is called at the end of every unit if OutputIsUnitBased is true. Only once if not.
+    Procedure DoneUnit(isMainFile : Boolean); virtual;
+    // This is called when Javascript is written for a unit
+    Function WriteJS(const aUnitName : String; aModule : TJSElement) : TJSElement; virtual;
+    // Current unit.
+    Property CurrentUnitName : String Read FCurrentUnitName;
+    // Passed at create
+    property FS : TPas2JSFS Read FFS;
+    // Return file content for writing to file if IsFileBased
+    Property AsString : String Read GetAsString;
+    // Number of resources
+    Property ResourceCount : Integer Read GetResourceCount;
+  end;
+
+  { TNoResources }
+
+  TNoResources = Class(TPas2jsResourceHandler)
+  Public
+    Procedure HandleResource (aFileName : string; Options : TStrings); override;
+    Class Function OutputMode : TResourceOutputMode; override;
+  end;
+implementation
+
+{$IFNDEF PAS2JS}
+uses base64;
+
+{ TNoResources }
+
+procedure TNoResources.HandleResource(aFileName: string; Options: TStrings);
+begin
+  // Do nothing
+end;
+
+
+class function TNoResources.OutputMode: TResourceOutputMode;
+begin
+  result:=romNone;
+end;
+
+{$ENDIF}
+
+{ TPas2jsResourceHandler }
+
+
+function TPas2jsResourceHandler.GetFormat(const aFileName: string; aOptions: TStrings): string;
+
+Var
+  E : String;
+
+begin
+  Result:=aOptions.Values['format'];
+  if Result='' then
+    begin
+    E:=ExtractFileExt(aFileName);
+    if (E<>'') and (E[1]='.') then
+      E:=Copy(E,2,Length(E)-1);
+    if Pos(LowerCase(E),';png;jpg;jpeg;bmp;ico;')>0 then
+      Result:='image/'+E
+    else if Pos(LowerCase(E),';htm;html;')>0 then
+      Result:='text/html'
+    else if Pos(LowerCase(E),';txt;lpr;pas;pp;')>0 then
+      Result:='text/text'
+    else if Pos(LowerCase(E),';js;')>0 then
+      Result:='application/javascript'
+    else if Pos(LowerCase(E),';json;')>0 then
+      Result:='application/javascript'
+    else
+      Result:='application/octet-stream';
+    end;
+end;
+
+constructor TPas2jsResourceHandler.Create(aFS: TPas2JSFS);
+begin
+  FFS:=aFS;
+end;
+
+
+class function TPas2jsResourceHandler.OutputFileExtension: String;
+begin
+  Result:='';
+end;
+
+
+function TPas2jsResourceHandler.LoadFile(aFileName: string): TPas2jsFile;
+begin
+  Result:=FS.LoadFile(aFileName,True);
+end;
+
+function TPas2jsResourceHandler.GetFileAsBase64(aFileName: string): string;
+
+Var
+  F : TPas2JSFile;
+
+begin
+  F:=LoadFile(aFileName);
+  Result:=EncodeStringBase64(F.Source);
+  // Do not release, FS will release all files
+end;
+
+procedure TPas2jsResourceHandler.ClearUnit;
+begin
+  FCurrentUnitName:='';
+end;
+
+procedure TPas2jsResourceHandler.StartUnit(const aUnitName: String);
+begin
+  FCurrentUnitName:=aUnitName;
+end;
+
+procedure TPas2jsResourceHandler.DoneUnit(isMainFile: Boolean);
+begin
+  if not isMainFile then
+    ClearUnit;
+end;
+
+function TPas2jsResourceHandler.WriteJS(const aUnitName: String; aModule: TJSElement): TJSElement;
+begin
+  Result:=aModule;
+end;
+
+
+end.
+