* GenHTML.PRG - HTML Generator.
*
* Copyright (c) 1998 Microsoft Corp.
* 1 Microsoft Way
* Redmond, WA 98052
*
* Description:
* HTML generator using classes in _HTML.VCX.
*
* Parameter list:
* cOutFile:			Specifies the name of the output .HTM file.  If a file name without
*					an extention is specified, .HTM is used.
* vSource:			Specifies the source file name, alias or object.
* nShow: 			0/.F./Empty = Generate output file only.
*					1 = Create output file and view generated file.
*					2 = Create output file and show generated file in Internet Explorer.
*					3 = Create output file and show based on Save As HTML dialog selection.
*					4 = Create PUBLIC _oHTML object and generate file.
*					5 = Create PUBLIC _oHTML object without generating file.
* vIELink:			Specifies a link to Internet Explorer object or Web Browser control.
*					.F./Empty = No link is created.
*					.T. = Automatically create instance of Internet Explorer.
*					Object = Reference to Internet Explorer or Web Browser control.
* cStyle:			Specifies Style ID reference in GenHTML.dbf.
* cScope:			Specifies the scope of scan by setting .cScope.
* cHTMLClass:		Specifies the Class, and optionally, the class library and module,
*					that is	instantiated for HTML object.
*					Syntax: Class[,ClassLibrary[,Module]]


*-- Types
#DEFINE VFP_DEFAULT_ID				"VFPDefault"

*-- Messages
#DEFINE M_CLASS_LOC					"Class"
#DEFINE M_COULD_NOT_BE_INST_LOC		"could not be instantiated"
#DEFINE M_COULD_NOT_OPENED_EXCL_LOC	"could not be opened exclusively to update the table structure."
#DEFINE M_FILE_LOC					"File"
#DEFINE M_FILE_ALREADY_EXISTS_LOC	"This file already exists."
#DEFINE M_FILE_TYPE_LOC				"File type"
#DEFINE M_GENHTML_LOC				"GenHTML"
#DEFINE M_INVALID_SOURCE_REF_LOC	"Invalid source reference"
#DEFINE M_NOT_FOUND_LOC				"not found"
#DEFINE M_NOT_SUPPORTED_LOC			"not supported"
#DEFINE M_OF_LOC					"of"
#DEFINE M_PROPERTIES_LOC			"Properties"
#DEFINE M_STYLE_LOC					"style"
#DEFINE M_REPLACE_EXISTING_FILE_LOC	"Replace existing file"
#DEFINE M_UNABLE_TO_CREATE_FILE_LOC	"Unable to create file"
#DEFINE M_UNABLE_TO_FIND_LOC		"Unable to find"
#DEFINE M_UNABLE_TO_OPEN_FILE_LOC	"Unable to open file"

*-- ASCII codes
#DEFINE TAB		CHR(9)
#DEFINE LF		CHR(10)
#DEFINE CR		CHR(13)
#DEFINE CR_LF	CR+LF


LPARAMETERS tcOutFile,tvSource,tnShow,tvIELink,tcStyle,tcScope,tcHTMLClass
LOCAL lcOutFile,lvSource,oSource,lnShow,lcStyle,lcScope,lcHTMLClass,lcHTMLClassLib
LOCAL lcHTMLModule,lcHTMLVCX,lnSourceListCount,lcLastOnError,llSaveAsHTML,lcText
LOCAL oRecord,lcGenHTMLTable,lcGenHTMLAlias,lnGenHTMLRecNo,oSaveEnvironment
LOCAL lcProgramPath,lcIELinkType,llIELink,oSaveAsHTMLForm,oSaveAsHTML,lnCount
LOCAL lcTitle,lcSourceVarType,lcSourceFileExt,ll_oHTMLPublic,llSuccessful,lnAtPos
LOCAL laSourceList[1,1],laSelObj[1],laLines[1]

oSaveEnvironment=NEWOBJECT("_SaveEnvironment")
lcProgramPath=JUSTPATH(LOWER(SYS(16)))+"\"
lcHTMLVCX=IIF(VERSION(2)=0,"",HOME()+"FFC\")+"_HTML.vcx"
lcOutFile=IIF(VARTYPE(tcOutFile)=="C",LOWER(ALLTRIM(tcOutFile)),"")
IF NOT EMPTY(lcOutFile) AND EMPTY(JUSTEXT(lcOutFile))
	lcOutFile=FORCEEXT(lcOutFile,"htm")
ENDIF
lnShow=IIF(VARTYPE(tnShow)=="N" OR VARTYPE(tnShow)=="I",MIN(MAX(INT(tnShow),0),5),0)
lcSourceVarType=VARTYPE(tvSource)
DO CASE
	CASE lcSourceVarType=="C"
		lvSource=ALLTRIM(tvSource)
	CASE lcSourceVarType=="O"
		lvSource=tvSource
	OTHERWISE
		lvSource=""
		lcSourceVarType="C"
ENDCASE
laSourceList=""
lnSourceListCount=0
IF lcSourceVarType=="C"
	IF EMPTY(lvSource) AND lnShow#5
		lvSource=LOWER(GETFILE("dbf;frx;lbx;mnx;scx"))
		IF EMPTY(lvSource)
			RETURN .NULL.
		ENDIF
	ELSE
		IF NOT CR$lvSource
			lvSource=STRTRAN(lvSource,",",CR)
		ENDIF
		IF MEMLINES(lvSource)>=2
			lnSourceListCount=ALINES(laLines,lvSource)
			lvSource=laLines[1]
			lnSourceListCount=lnSourceListCount-1
			ADEL(laLines,1)
			DIMENSION laLines[lnSourceListCount]
			lnCount=0
			DO WHILE .T.
				lnCount=lnCount+1
				IF lnCount>lnSourceListCount
					EXIT
				ENDIF
				IF NOT EMPTY(laLines[lnCount])
					LOOP
				ENDIF
				ADEL(laLines,lnCount)
				lnSourceListCount=lnSourceListCount-1
			ENDDO
			IF lnSourceListCount>=1
				DIMENSION laSourceList[lnSourceListCount,2]
				FOR lnCount = 1 TO lnSourceListCount
					lcText=ALLTRIM(laLines[lnCount])
					lnAtPos=AT("@",lcText)
					IF lnAtPos>0
						laSourceList[lnCount,1]=ALLTRIM(SUBSTR(lcText,lnAtPos+1))
						laSourceList[lnCount,2]=ALLTRIM(LEFT(lcText,lnAtPos-1))
					ELSE
						laSourceList[lnCount,1]=lcText
						laSourceList[lnCount,2]=""
					ENDIF
				ENDFOR
			ENDIF
		ENDIF
	ENDIF
	lcSourceFileExt=LOWER(JUSTEXT(lvSource))
	IF NOT "!"$lvSource AND NOT EMPTY(lcSourceFileExt)
		lvSource=LOWER(FULLPATH(lvSource))
	ENDIF
ENDIF
lcIELinkType=VARTYPE(tvIELink)
llIELink=INLIST(lcIELinkType,"L","O")
lcStyle=IIF(VARTYPE(tcStyle)=="C",LOWER(ALLTRIM(tcStyle)),"")	
lcScope=IIF(VARTYPE(tcScope)=="C",LOWER(ALLTRIM(tcScope)),"ALL")
lcHTMLClass=IIF(VARTYPE(tcHTMLClass)=="C",LOWER(ALLTRIM(tcHTMLClass)),"")
llSaveAsHTML=(lnShow=3)
lcGenHTMLTable=lcProgramPath+"GenHTML.dbf"
lcGenHTMLAlias=LOWER(SYS(2015))
SELECT 0
lcLastOnError=ON("ERROR")
ON ERROR =.F.
USE (lcGenHTMLTable) AGAIN SHARED ALIAS (lcGenHTMLAlias)
IF EMPTY(lcLastOnError)
	ON ERROR
ELSE
	ON ERROR &lcLastOnError
ENDIF
IF NOT _CheckGenHTMLTableStructure(lcGenHTMLTable,lcGenHTMLAlias,lcHTMLVCX)
	RETURN .NULL.
ENDIF
SET FILTER TO NOT DELETED()
LOCATE
oSaveEnvironment.cGenHTMLTable=lcGenHTMLTable
oSaveEnvironment.cGenHTMLAlias=lcGenHTMLAlias
IF EMPTY(lcStyle)
	lcStyle=LOWER(VFP_DEFAULT_ID)
ENDIF
LOCATE FOR LOWER(ALLTRIM(ID))==lcStyle
IF EOF()
	USE
	_MsgBox(M_UNABLE_TO_FIND_LOC+[ ]+M_STYLE_LOC+[ "]+lcStyle+[".])
	RETURN .NULL.
ENDIF
lnGenHTMLRecNo=RECNO()
oSaveEnvironment.nGenHTMLRecNo=lnGenHTMLRecNo
SCATTER MEMO NAME oRecord
_EvalLinks(Links,oRecord)
GO lnGenHTMLRecNo
SELECT 0
IF EMPTY(lcHTMLClass) AND NOT EMPTY(oRecord.ClassName)
	lcHTMLClass=LOWER(ALLTRIM(MLINE(oRecord.ClassName,1)))
ENDIF
IF EMPTY(lcHTMLClassLib) AND NOT EMPTY(oRecord.ClassLib)
	lcHTMLClassLib=LOWER(ALLTRIM(MLINE(oRecord.ClassLib,1)))
ENDIF
IF EMPTY(lcHTMLModule) AND NOT EMPTY(oRecord.Module)
	lcHTMLModule=LOWER(ALLTRIM(MLINE(oRecord.Module,1)))
ENDIF
IF lnShow=3
	oSaveAsHTMLForm=NEWOBJECT("_HTMLSaveAsDialog",lcHTMLVCX)
	IF VARTYPE(oSaveAsHTMLForm)#"O"
		RETURN .NULL.
	ENDIF
	oSaveAsHTML=NEWOBJECT("Custom")
	oSaveAsHTML.AddProperty("cOutFile","")
	oSaveAsHTML.AddProperty("nShow",0)
	WITH oSaveAsHTMLForm
		.oSaveAsHTML=oSaveAsHTML
		.txtOutFile.Value=lcOutFile
		.Show
		lcOutFile=.oSaveAsHTML.cOutFile
		lnShow=.oSaveAsHTML.nShow
		IF EMPTY(lcOutFile)
			RETURN .NULL.
		ENDIF
	ENDWITH
	IF EMPTY(lcOutFile)
		RETURN .NULL.
	ENDIF
ENDIF
IF (llSaveAsHTML OR oSaveEnvironment.cLastSetSafety=="ON") AND ;
		NOT EMPTY(lcOutFile) AND FILE(lcOutFile) AND ;
	_MsgBox(lcOutFile+CR_LF+M_FILE_ALREADY_EXISTS_LOC+CR_LF+CR_LF+ ;
			M_REPLACE_EXISTING_FILE_LOC+"?",292)#6
	RETURN .NULL.
ENDIF
ll_oHTMLPublic=(TYPE("_oHTML")#"U")
IF ll_oHTMLPublic AND VARTYPE(_oHTML)=="O" AND PEMSTATUS(_oHTML,"Release",5)
	_oHTML.Release
ENDIF
RELEASE _oHTML
IF ll_oHTMLPublic OR lnShow=4 OR lnShow=5
	ll_oHTMLPublic=.T.
	PUBLIC _oHTML
ELSE
	PRIVATE _oHTML
ENDIF
_oHTML=.NULL.
lcHTMLModule=""
lnAtPos=AT(",",lcHTMLClass)
IF lnAtPos>0
	lcHTMLClassLib=ALLTRIM(SUBSTR(lcHTMLClass,lnAtPos+1))
	lcHTMLClass=ALLTRIM(LEFT(lcHTMLClass,lnAtPos-1))
	lnAtPos=AT(",",lcHTMLClassLib)
	IF lnAtPos>0
		lcHTMLModule=ALLTRIM(SUBSTR(lcHTMLClassLib,lnAtPos+1))
		lcHTMLClassLib=ALLTRIM(LEFT(lcHTMLClassLib,lnAtPos-1))
	ENDIF
ELSE
	IF EMPTY(lcHTMLClassLib)
		lcHTMLClassLib=LOWER(lcHTMLVCX)
	ENDIF
ENDIF
IF LEFT(lcHTMLClass,1)=="(" AND RIGHT(lcHTMLClass,1)==")"
	lcHTMLClass=EVALUATE(SUBSTR(lcHTMLClass,2,LEN(lcHTMLClass)-2))
ENDIF
IF LEFT(lcHTMLClassLib,1)=="(" AND RIGHT(lcHTMLClassLib,1)==")"
	lcHTMLClassLib=EVALUATE(SUBSTR(lcHTMLClassLib,2,LEN(lcHTMLClassLib)-2))
ENDIF
IF LEFT(lcHTMLModule,1)=="(" AND RIGHT(lcHTMLModule,1)==")"
	lcHTMLModule=EVALUATE(SUBSTR(lcHTMLModule,2,LEN(lcHTMLModule)-2))
ENDIF
IF NOT EMPTY(lcHTMLClassLib) AND EMPTY(JUSTEXT(lcHTMLClassLib))
	lcHTMLClassLib=FORCEEXT(lcHTMLClassLib,"vcx")
ENDIF
IF NOT EMPTY(lcHTMLModule) AND EMPTY(JUSTEXT(lcHTMLModule))
	lcHTMLModule=FORCEEXT(lcHTMLModule,"app")
ENDIF
IF NOT EMPTY(lcHTMLClassLib) AND NOT FILE(lcHTMLClassLib)
	_MsgBox(M_FILE_LOC+[ "]+lcHTMLClassLib+[" ]+M_NOT_FOUND_LOC+[.])
	RETURN .NULL.
ENDIF
IF NOT EMPTY(lcHTMLModule) AND NOT FILE(lcHTMLModule)
	_MsgBox(M_FILE_LOC+[ "]+lcHTMLModule+[" ]+M_NOT_FOUND_LOC+[.])
	RETURN .NULL.
ENDIF
oSource=.NULL.
DO CASE
	CASE NOT EMPTY(lcHTMLClass)
		=.F.
	CASE lcSourceVarType=="O"
		oSource=lvSource
		lcHTMLClass="_HTMLObject"
	CASE lcSourceVarType=="C" AND NOT EMPTY(lvSource)
		DO CASE
			CASE EMPTY(lcSourceFileExt) AND NOT EMPTY(lvSource)
				lcHTMLClass="_HTMLTable"
			CASE NOT FILE(lvSource)
				_MsgBox([File "]+lvSource+[" not found.])
				RETURN .NULL.
			CASE lcSourceFileExt=="dbf"
				lcHTMLClass="_HTMLTable"
			CASE lcSourceFileExt=="frx"
				lcHTMLClass="_HTMLReport"
			CASE lcSourceFileExt=="lbx"
				lcHTMLClass="_HTMLLabel"
			CASE lcSourceFileExt=="mnx"
				lcHTMLClass="_HTMLMenu"
			CASE lcSourceFileExt=="scx"
				lcHTMLClass="_HTMLObject"
				oSaveEnvironment.cWindow=LOWER(SYS(2015))
				DEFINE WINDOW (oSaveEnvironment.cWindow) FROM 0,0 TO 0,0 NONE
				MODIFY FORM (lvSource) IN WINDOW (oSaveEnvironment.cWindow) NOWAIT
				IF ASELOBJ(laSelObj,1)#1
					RELEASE WINDOW (oSaveEnvironment.cWindow)
					_MsgBox(M_UNABLE_TO_OPEN_FILE_LOC+[ "]+lvSource+[".])
					RETURN .NULL.
				ENDIF
				oSource=laSelObj[1]
				IF WVISIBLE(M_PROPERTIES_LOC)
					oSaveEnvironment.lWindow=.T.
					HIDE WINDOW (M_PROPERTIES_LOC)
				ENDIF
			OTHERWISE
				IF EMPTY(lvSource)
					_MsgBox(M_INVALID_SOURCE_REF_LOC+".")
				ELSE
					_MsgBox(M_FILE_TYPE_LOC+" "+lvSource+" "+M_NOT_SUPPORTED_LOC+".")
				ENDIF
				RETURN .NULL.
		ENDCASE
	OTHERWISE
		lcHTMLClass="_HTMLDocument"
ENDCASE
lcLastOnError=ON("ERROR")
ON ERROR =.F.
_oHTML=NEWOBJECT(lcHTMLClass,lcHTMLClassLib)
IF EMPTY(lcLastOnError)
	ON ERROR
ELSE
	ON ERROR &lcLastOnError
ENDIF
IF VARTYPE(_oHTML)#"O"
	_oHTML=.NULL.
	_MsgBox(M_CLASS_LOC+[ (]+lcHTMLClass+[) ]+M_OF_LOC+[ "]+LOWER(lcHTMLClassLib)+ ;
			[" ]+M_COULD_NOT_BE_INST_LOC+[.])
	RETURN .NULL.
ENDIF
IF lnShow#5 AND EMPTY(lcOutFile)
	lcOutFile=_oHTML.GetFile()
	IF EMPTY(lcOutFile)
		IF VARTYPE(_oHTML)=="O"
			_oHTML.Release
		ENDIF
		_oHTML=.NULL.
		RETURN .NULL.
	ENDIF
ENDIF
IF llIELink
	DO CASE
		CASE lcIELinkType=="L" AND tvIELink
			_oHTML.CreateIELink
		CASE lcIELinkType=="O"
			_oHTML.IE=tvIELink
	ENDCASE
ENDIF
_oHTML.oRecord=oRecord
_oHTML.cGenHTMLTable=lcGenHTMLTable
_oHTML.cGenHTMLAlias=lcGenHTMLAlias
_oHTML.lMessageBar=.T.
_oHTML.cOutFile=lcOutFile
_oHTML.oSource=oSource
_oHTML.cSourceFile=IIF(VARTYPE(lvSource)=="C",lvSource,"")
_oHTML.nSourceListCount=lnSourceListCount
ACOPY(laSourceList,_oHTML.aSourceList)
_oHTML.cScope=lcScope
_oHTML.oProperties=_oHTML.NewTag()
_oHTML.oProperties.SetProperties(oRecord.Properties)
_oHTML.RunCode(_oHTML.oRecord.PreScript)
IF PEMSTATUS(_oHTML,"Head",5)
	_oHTML.Head.AddItem(_oHTML.oRecord.HeadStart)
	IF EMPTY(_oHTML.cSourceFile)
		IF VARTYPE(lvSource)=="O" AND PEMSTATUS(lvSource,"Name",5)
			lcTitle=ALLTRIM(TRANSFORM(lvSource.Name))
		ELSE
			lcTitle=""
		ENDIF
	ELSE
		lcTitle=_oHTML.cSourceFile
	ENDIF
	_oHTML.Head.Title.Item=lcTitle
ENDIF