<%
public include, include_vars
set include = new cls_include

class cls_include

    private sub class_initialize()
        set include_vars = server.createobject("scripting.dictionary")
    end sub

    private sub class_deactivate()
        arr_variables.removeall
        set include_vars = nothing
        set include = nothing
    end sub

    public default function include(byval str_path)
        dim str_source
        if str_path <> "" then
            str_source = readfile(str_path)
            if str_source <> "" then
                processincludes str_source
                convert2code str_source
                formatcode str_source
                if str_source <> "" then
                    if request.querystring("debug") = 1 then
                        response.write str_source
                        response.end
                    else
                        executeglobal str_source
                        include_vars.removeall
                    end if
                end if
            end if
        end if
    end function

    private sub convert2code(str_source)
        dim i, str_temp, arr_temp, int_len
        dim str_separator
        str_separator = "$|"
        if str_source <> "" then
            if instr(str_source,"%" & ">") > instr(str_source,"<" & "%") then
                str_temp = replace(str_source,"<" & "%",str_separator & "%")
                str_temp = replace(str_temp,"%" & ">",str_separator)
                if left(str_temp,1) = str_separator then str_temp = right(str_temp,len(str_temp) - len(str_separator))
                if right(str_temp,1) = str_separator then str_temp = left(str_temp,len(str_temp) - len(str_separator))
                arr_temp = split(str_temp,str_separator)
                int_len = ubound(arr_temp)
                if (int_len + 1) > 0 then
                    for i = 0 to int_len
                        str_temp = trim(arr_temp(i))
                        str_temp = replace(str_temp,vbcrlf & vbcrlf,vbcrlf)
                        if left(str_temp,2) = vbcrlf then str_temp = right(str_temp,len(str_temp) - 2)
                        if right(str_temp,2) = vbcrlf then str_temp = left(str_temp,len(str_temp) - 2)
                        if left(str_temp,1) = "%" then
                            str_temp = right(str_temp,len(str_temp) - 1)
                            if left(str_temp,1) = "=" then
                                str_temp = right(str_temp,len(str_temp) - 1)
                                str_temp = "response.write " & str_temp
                            end if
                        else
                            if str_temp <> "" then
                                include_vars.add i, str_temp
                                str_temp = "response.write include_vars.item(" & i & ")"
                            end if
                        end if
                        str_temp = replace(str_temp,chr(34) & chr(34) & " & ","")
                        str_temp = replace(str_temp," & " & chr(34) & chr(34),"")
                        if right(str_temp,2) <> vbcrlf then str_temp = str_temp
                        arr_temp(i) = str_temp
                    next
                    str_source = join(arr_temp,vbcrlf)
                end if
            else
                if str_source <> "" then
                    include_vars.add "var", str_source
                    str_source = "response.write include_vars.item(""var"")"
                end if
            end if
        end if
    end sub

    private sub processincludes(str_source)
        dim int_start, str_path, str_mid, str_temp
        str_source = replace(str_source,"<!-- #","<!--#")
        int_start = instr(str_source,"<!--#include")
        str_mid = lcase(getbetween(str_source,"<!--#include","-->"))
        do until int_start = 0
            str_mid = lcase(getbetween(str_source,"<!--","-->"))
            int_start = instr(str_mid,"#include")
            if int_start >  0 then
                if instr(str_mid,chr(34))=0 then
                    str_temp = replace(replace(str_mid,"#include",""),"file=","")
                else
                    str_temp = lcase(getbetween(str_mid,chr(34),chr(34)))
                end if
                str_temp = trim(str_temp)
                str_path = readfile(str_temp)
                str_source = replace(str_source,"<!--" & str_mid & "-->",str_path & vbcrlf)
            end if
            int_start = instr(str_source,"#include")
        loop
    end sub

    private sub formatcode(str_code)
        dim i, arr_temp, int_len
        str_code = replace(str_code,vbcrlf & vbcrlf,vbcrlf)
        if left(str_code,2) = vbcrlf then str_code = right(str_code,len(str_code) - 2)
        str_code = trim(str_code)
        if instr(str_code,vbcrlf) > 0 then
            arr_temp = split(str_code,vbcrlf)
            for i = 0 to ubound(arr_temp)
                arr_temp(i) = ltrim(arr_temp(i))
                if arr_temp(i) <> "" then arr_temp(i) = arr_temp(i) & vbcrlf
            next
            str_code = join(arr_temp,"")
            arr_temp = vbnull
        end if
    end sub

    private function readfile(str_path)
        dim objfso, objfile
        if str_path <> "" then
            if instr(str_path,":") = 0 then str_path = server.mappath(str_path)
            set objfso = server.createobject("scripting.filesystemobject")
            if objfso.fileexists(str_path) then
                set objfile = objfso.opentextfile(str_path, 1, false)
                if err.number = 0 then
                    readfile = objfile.readall
                    objfile.close
                end if
                set objfile = nothing
            end if
            set objfso = nothing
        end if
    end function

    private function getbetween(strdata, strstart, strend)
        dim lngstart, lngend
        lngstart = instr(strdata, strstart) + len(strstart)
        if (lngstart <> 0) then
            lngend = instr(lngstart, strdata, strend)
            if (lngend <> 0) then
                getbetween = mid(strdata, lngstart, lngend - lngstart)
            end if
        end if
    end function
    
end class
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