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MVC 模式在網(wǎng)站架構(gòu)中十分常見。它允許我們建立一個(gè)三層結(jié)構(gòu)的應(yīng)用程式，從代碼中分離出有用的層，幫助設(shè)計(jì)師和開發(fā)者協(xié)同工作以及提高我們維護(hù)和擴(kuò)展既有程式的能力。
PHP 中有一個(gè)很著名的類庫 phpLib，其中有 Template 模板類。能夠很方便地實(shí)現(xiàn)代碼分離在 ASP 中是否也可以這樣做呢？當(dāng)然可以，這就是 aspTemplate 的初衷。它完全實(shí)現(xiàn)了 phpLib Template 的全部功能，你可以象使用 phpLib Template 一樣使用它，連習(xí)慣也基本不用改。:)
<%
'#######################################################################
'## NAME: aspTemplate
'## BY: BigHan
'## DATE: Nov. 28, 2003
'## SITE: http://aspTemplate.yeah.net/
'## EMAIL: aspTemplate@21cn.com
'##
'## (C) Copyright 2003-2004 bighan
'#######################################################################
Class aspTemplate
'####
'## name of this class
'## var string
'## @access Private
'## @see property: Name
'####
Private m_strName
'####
'## version of this class
'## var string
'## @access Private
'## @see property: Version
'####
Private m_strVersion
'####
'## Determines how much debugging output Template will produce.
'## This is a bitwise mask of available debug levels:
'## 0 = no debugging
'## 1 = debug variable assignments
'## 2 = debug calls to get variable
'## 4 = debug internals (outputs all function calls with parameters).
'##
'## @var int
'## @access Private
'## @see property: Debug
'####
Private m_intDebug
'####
'## The base directory from which template files are loaded.
'##
'## @var string
'## @access private
'## @see property: Root, Dir; method: SetRoot, set_root
'####
Private m_strRoot
'####
'## Determines how to output variable tags with no assigned value in templates.
'##
'## @var string
'## @access private
'## @see property Unknown; method: SetUnknowns, set_unknowns
'####
Private m_strUnknowns
'####
'## Determines how Template handles error conditions.
'## "yes" = the error is reported, then execution is halted
'## "report" = the error is reported, then execution continues by returning "false"
'## "no" = errors are silently ignored, and execution resumes reporting "false"
'##
'## @var string
'## @access private
'## @see property IsHalt; method: halt
'####
Private m_strHaltError
'####
'## The last error message is retained in this variable.
'##
'## @var string
'## @access private
'## @see property LastError
'##
Private m_strLastError
'####
'## Opening delimiter (usually "{")
'##
'## @var string
'## @access private
'## @see property BeginTag
'####
Private m_strBeginTag
'####
'## Closing delimiter (usually "}")
'##
'## @var string
'## @access private
'## @see private EndTag
'####
Private m_strEndTag
'####
'## A hash of strings forming a translation table which translates variable names
'## into names of files containing the variable content.
'## m_oFile.Item(varname) = "filename";
'##
'## @var object
'## @access private
'## @see method: SetFile, SetFiles, set_file
'####
Private m_oFile
'####
'## Regular Expression Object
'##
'## @var object
'## @access private
'####
Private m_oRegExp
'####
'## A hash of strings forming a translation table which translates variable names
'## into regular expressions for themselves.
'## m_oVarKeys.Item(varname) = "{varname}"
'##
'## @var object
'## @access private
'## @see method: SetVar, SetVars, SetAppendVar, SetAppendVars, set_var
'####
Private m_oVarKeys
'####
'## A hash of strings forming a translation table which translates variable names
'## into values for their respective varkeys.
'## m_oVarVals.Item(varname) = "value"
'##
'## @var object
'## @access private
'## @see method: SetVar, SetVars, SetAppendVar, SetAppendVars, set_var
'####
Private m_oVarVals
'####
'## get class name attribute.
'##
'## usage: oTemplate.Name
'## access public
'##
Public Property Get Name()
'############################################################
Name = m_strName
End Property
'####
'## get class version attribute.
'##
'## usage: oTemplate.Version
'## access public
'##
Public Property Get Version()
'############################################################
Version = m_strVersion
End Property
'####
'## get/set m_intDebug attribute.
'##
'## usage: oTemplate.Debug = A_intDebug
'## access public
'##
Public Property Let Debug(ByVal A_intDebug)
'############################################################
m_intDebug = CInt(A_intDebug)
End Property
Public Property Get Debug()
Debug = m_intDebug
End Property
'####
'## Sets the policy for dealing with unresolved variable names.
'##
'## unknowns defines what to do with undefined template variables
'## "remove" = remove undefined variables
'## "comment" = replace undefined variables with comments
'## "keep" = keep undefined variables
'##
'## Note: "comment" can cause unexpected results when the variable tag is embedded
'## inside an HTML tag, for example a tag which is expected to be replaced with a URL.
'##
'## usage: oTemplate.Unknown = A_unknowns
'##
'## @param A_unknowns new value for unknowns
'## @see unknowns, SetUnknowns, set_unknowns
'## @access public
'##
Public Property Let Unknown(ByVal A_unknowns)
'############################################################
If Debug = 4 Then Response.Write "<p><b>Unknown:</b> unknown = " & A_unknowns & "</p>" & VbCrLf
A_unknowns = LCase(A_unknowns)
Select Case A_unknowns
Case "keep"
m_strUnknowns = "keep"
Case "remove"
m_strUnknowns = "remove"
Case "comment"
m_strUnknowns = "comment"
Case Else
m_strUnknowns = "remove"
End Select
End Property
Public Property Get Unknown()
Unknown = m_strUnknowns
End Property
'####
'## Checks that root is a valid directory and if so sets this directory as the
'## base directory from which templates are loaded by storing the value in
'## Root. Relative filenames are prepended with the path in Root.
'##
'## usage: oTemplate.Root = A_root
'##
'## @param A_root string containing new template directory
'## @see m_strRoot, SetRoot, set_root
'## @access public
'##
Public Property Let Root(ByVal A_root)
'############################################################
If Debug = 4 Then Response.Write "<p><b>Root:</b> root = " & A_root & "</p>" & VbCrLf
Dim MM_FSO
If Len(A_root) > 0 Then
Set MM_FSO = CreateObject("Scripting.FileSystemObject")
If MM_FSO.FolderExists(Server.MapPath(A_root)) Then
If Right(A_root, 1) <> "/" Then
m_strRoot = A_root & "/"
Else
m_strRoot = A_root
End If
Else
Call halt("The folder " & A_root & " does not exist.")
End If
End If
End Property
Public Property Get Root()
Root = m_strRoot
End Property
'####
'##
'## alias of Root
'##
Public Property Let Dir(ByVal A_root)
'############################################################
Root = A_root
End Property
Public Property Get Dir()
Dir = Root
End Property
'####
'## Set/Get class m_strHaltError attribute.
'##
'## "yes" = the error is reported, then execution is halted.
'## "no" = errors are silently ignored.
'## "report" = the error is reported, then execution continues.
'##
'## usage: oTemplate.IsHalt = A_strHalt
'##
'## @param A_strHalt new value for m_strHaltError
'## @see Halt
'## @access public
'##
Public Property Let IsHalt(ByVal A_strHalt)
'############################################################
A_strHalt = LCase(A_strHalt)
Select Case A_strHalt
Case "yes"
m_strHaltError = "yes"
Case "no"
m_strHaltError = "no"
Case "report"
m_strHaltError = "report"
End Select
End Property
Public Property Get IsHalt()
IsHalt = m_strHaltError
End Property
'####
'## Set/Get class m_strBeginTag attribute.
'##
'## Note: Don't conflict of HTML tag
'##
'## usage: oTemplate.BeginTag = A_tag
'##
'## @param A_tag new value for m_strBeginTag
'## @access public
'##
Public Property Let BeginTag(ByVal A_tag)
'############################################################
If Debug = 4 Then Response.Write "<p><b>BeginTag:</b> BeginTag = " & A_tag & "</p>" & VbCrLf
m_strBeginTag = A_tag
End Property
Public Property Get BeginTag()
BeginTag = m_strBeginTag
End Property
'####
'## Set/Get class m_strEndTag attribute.
'##
'## Note: Don't conflict of HTML tag
'##
'## usage: oTemplate.EndTag = A_tag
'##
'## @param A_tag new value for m_strEndTag
'## @access public
'##
Public Property Let EndTag(ByVal A_tag)
'############################################################
If Debug = 4 Then Response.Write "<p><b>EndTag:</b> EndTag = " & A_tag & "</p>" & VbCrLf
m_strEndTag = A_tag
End Property
Public Property Get EndTag()
EndTag = m_strEndTag
End Property
'####
'## Get class last error messages.
'##
'## usage: oTemplate.LastError
'##
'## @access public
'##
Public Property Get LastError()
'############################################################
LastError = m_strLastError
End Property
'####
'##
'## @see Root
'##
Public Sub SetRoot(ByVal A_root)
'############################################################
Root = A_root
End Sub
'## @same phplib::template->set_root
Public Sub set_root(ByVal A_root)
Root = A_root
End Sub
'####
'##
'## @see Unknown
'##
Public Sub SetUnknowns(ByVal A_unknowns)
'############################################################
Unknown = A_unknowns
End Sub
'## @same phplib::template->set_root
Public Sub set_unknowns(ByVal A_unknowns)
Unknown = A_unknowns
End Sub
'####
'## Defines a filename for the initial value of a variable.
'##
'## It may be passed either a varname and a file name as two strings or
'## a hash of strings with the key being the varname and the value
'## being the file name.
'##
'## The new mappings are stored in the object m_oFile.
'## The files are not loaded yet, but only when needed.
'##
'##
'## usage: oTemplate.SetFile A_varname, A_filename
'## or
'## usage: oTemplate.SetFile array(A_varname1, A_filename1 _
'## ,A_varname2, A_filename2 _
'## ,.... .... , ,,,. ,,,, ) _
'## , ""
'## @see SetFiles
'## @param A_varname either a string containing a varname or a hash of varname/file name pairs.
'## @param A_filename if varname is a string this is the filename otherwise filename is not required
'## @access public
'##
Public Sub SetFile(ByVal A_varname, ByVal A_filename)
'############################################################
Dim MM_strFiles
If Not IsArray(A_varname) Then
If Debug = 4 Then Response.Write "<p><b>SetFile:</b> (with scalar) varname = "& A_varname &", filename = "& A_filename &"</p>" & VbCrLf
If A_filename = "" Then
Call halt("SetFile: For varname " & A_filename & " filename is empty.")
Exit Sub
End If
MM_strFiles = filename(A_filename)
m_oFile.Add A_varname, MM_strFiles
Else
Call SetFiles(A_varname)
End If
End Sub
'####
'## Defines a multi-filename for the initial value of a variable.
'##
'## usage: oTemplate.SetFiles array(A_varname1, A_filename1 _
'## ,A_varname2, A_filename2 _
'## ,.... .... , ,,,. ,,,, )
'## @param array A_varname
'## @access public
'## @see SetFile
'##
Public Sub SetFiles(ByVal A_varname)
'############################################################
Dim i, num
If IsArray(A_varname) Then
num = Ubound(A_varname)
if ((num +1) mod 2) <> 0 Then
Call halt("SetFiles: For varname array's element not gemination.")
Exit Sub
Else
For i = 0 To num Step 2
Call SetFile(A_varname(i), A_varname(i+1))
Next
End If
Else
Call SetFile(A_varname, "")
End If
End Sub
'## @same phplib::template->set_file
Public Sub set_file(ByVal A_varname, ByVal A_filename)
Call SetFile(A_varname, A_filename)
End Sub
'####
'## A variable $parent may contain a variable block defined by:
'## <!-- BEGIN A_varname --> content <!-- END A_varname -->. This function removes
'## that block from $parent and replaces it with a variable reference named $name.
'## The block is inserted into the varkeys and varvals hashes. If A_name is
'## omitted, it is assumed to be the same as A_varname.
'##
'## Blocks may be nested but care must be taken to extract the blocks in order
'## from the innermost block to the outermost block.
'##
'## usage: oTemplate.SetBlock string A_parent, string A_parent, string A_name
'##
'## @param A_parent a string containing the name of the parent variable
'## @param A_varname a string containing the name of the block to be extracted
'## @param A_name the name of the variable in which to store the block
'## @access public
'##
Public Sub SetBlock(ByVal A_parent, ByVal A_varname, ByVal A_name)
'############################################################
Dim MM_String, MM_MatchString
If Debug = 4 Then Response.Write "<p><b>SetBlock:</b> parent = " & A_parent & ", varname = " & A_varname & ", name = " & A_name & "</p>" & VbCrLf
If Not loadfile(A_parent) Then
Call halt("SetBlock: unable to load " & A_parent & ".")
Exit Sub
End If
if A_name = "" Then A_name = A_varname
MM_String = GetVar(A_parent)
m_oRegExp.IgnoreCase = True
m_oRegExp.Global = True
m_oRegExp.Pattern = "<!--\s+BEGIN\s+(" & A_varname & ")\s+-->([\s\S.]*)<!--\s+END\s+\1\s+-->"
Set Matches = m_oRegExp.Execute(MM_String)
For Each Match In Matches
MM_MatchString = Match.SubMatches(1)
MM_String = m_oRegExp.Replace(MM_String, BeginTag & A_name & EndTag)
Call SetVar(A_varname,MM_MatchString)
Call SetVar(A_parent,MM_String)
Next
End Sub
'## @same phplib::template->set_block
Public Sub set_block(ByVal A_parent, ByVal A_varname, ByVal A_name)
Call SetBlock(A_parent, A_varname, A_name)
End Sub
'####
'## This functions sets the value of a variable.
'##
'## It may be called with either a varname and a value as two strings or an
'## an associative array with the key being the varname and the value being
'## the new variable value.
'##
'## The function inserts the new value of the variable into the $varkeys and
'## $varvals hashes. It is not necessary for a variable to exist in these hashes
'## before calling this function.
'##
'## usage: oTemplate.SetVar string A_varname, string A_value
'## or
'## usage: oTemplate.SetVar array( A_varname1, A_value1 _
'## ,A_varname2, A_value2 _
'## , ... , ... ) _
'## , ""
'##
'## @param A_varname either a string containing a varname or a hash of varname/value pairs.
'## @param A_value if A_varname is a string this contains the new value for the variable otherwise this parameter is ignored
'## @access public
'##
Public Sub SetVar(ByVal A_varname, ByVal A_value)
'############################################################
Dim MM_varname
If Not IsArray(A_varname) Then
If A_varname <> "" Then
If Debug = 1 Then Response.Write "<b>SetVar:</b> (with scalar) <b>" & A_varname & "</b> = " & Server.HTMLEncode(A_value) & "<br>" & VbCrLf
MM_varname = varname(A_varname)
if m_oVarKeys.Exists(A_varname) Then
m_oVarKeys.Remove A_varname
m_oVarKeys.Add A_varname, MM_varname
Else
m_oVarKeys.Add A_varname, MM_varname
End If
If m_oVarVals.Exists(A_varname) Then
m_oVarVals.Remove A_varname
m_oVarVals.Add A_varname, A_value
Else
m_oVarVals.Add A_varname, A_value
End If
End If
Else
Call SetVars(A_varname)
End If
End Sub
'####
'## usage: oTemplate.SetVar array( A_varname1, A_value1 _
'## ,A_varname2, A_value2 _
'## , ... , ... )
'## @param A_varname a hash of varname/value pairs.
'## @access public
'## @see SetVar
'##
Public Sub SetVars(ByVal A_varname)
'############################################################
Dim i, num
If IsArray(A_varname) Then
num = Ubound(A_varname)
if ((num +1) mod 2) <> 0 Then
Call halt("SetVars: For varname array's element not gemination.")
Exit Sub
Else
For i = 0 To num Step 2
Call SetVar(A_varname(i), A_varname(i+1))
Next
End If
Else
Call SetVar(A_varname, "")
End If
End Sub
'####
'## usage: oTemplate.SetAppendVar string A_varname, string A_value
'## or
'## usage: oTemplate.SetAppendVar array( A_varname1, A_value1 _
'## ,A_varname2, A_value2 _
'## , ... , ... ) _
'## , ""
'## @param A_varname either a string containing a varname or a hash of varname/value pairs.
'## @param A_value if A_varname is a string this contains the new value for the variable otherwise this parameter is ignored
'## @access public
'## @see SetVar
'##
Public Sub SetAppendVar(ByVal A_varname, ByVal A_value)
'############################################################
Dim MM_varname, MM_string
If Not IsArray(A_varname) Then
If A_varname <> "" Then
If Debug = 1 Then Response.Write "<b>SetAppendVar:</b> (with scalar) <b>" & A_varname & "</b> = " & Server.HTMLEncode(A_value) & "<br>" & VbCrLf
MM_varname = varname(A_varname)
if m_oVarKeys.Exists(A_varname) Then
m_oVarKeys.Remove A_varname
m_oVarKeys.Add A_varname, MM_varname
Else
m_oVarKeys.Add A_varname, MM_varname
End If
If m_oVarVals.Exists(A_varname) Then
MM_string = m_oVarVals.Item(A_varname) & A_value
m_oVarVals.Remove A_varname
m_oVarVals.Add A_varname, MM_string
Else
m_oVarVals.Add A_varname, A_value
End If
End If
Else
Call SetAppendVars(A_varname)
End If
End Sub
'####
'## usage: oTemplate.SetAppendVars array( A_varname1, A_value1 _
'## ,A_varname2, A_value2 _
'## , ... , ... )
'## @param A_varname a hash of varname/value pairs.
'## @access public
'## @see SetVar
'##
Public Sub SetAppendVars(ByVal A_varname)
'############################################################
Dim i, num
If IsArray(A_varname) Then
num = Ubound(A_varname)
if ((num +1) mod 2) <> 0 Then
Call halt("SetVars: For varname array's element not gemination.")
Exit Sub
Else
For i = 0 To num Step 2
Call SetAppendVar(A_varname(i), A_varname(i+1))
Next
End If
Else
Call SetAppendVar(A_varname, "")
End If
End Sub
'####
'##
'## @same phplib::template->set_var
'##
Public Sub set_var(ByVal A_varname, ByVal A_value, ByVal A_append)
'############################################################
If CBool(A_append) = True Then
If Not IsArray(A_varname) Then
Call SetAppendVar(A_varname, A_value)
Else
Call SetAppendVars(A_varname, A_value)
End If
Else
If Not IsArray(A_varname) Then
Call SetVar(A_varname, A_value)
Else
Call SetVars(A_varname, A_value)
End If
End If
End Sub
'####
'## This function fills in all the variables contained within the variable named
'## A_varname. The resulting value is returned as the function result and the
'## original value of the variable varname is not changed. The resulting string
'## is not "finished", that is, the unresolved variable name policy has not been
'## applied yet.
'##
'## Returns: the value of the variable $varname with all variables substituted.
'##
'## usage: SubString(string A_varname)
'##
'## @param A_varname the name of the variable within which variables are to be substituted
'## @access public
'## @return string
'##
Public Function SubString(ByVal A_varname)
'############################################################
Dim MM_String
If Debug = 4 Then Response.Write "<p><b>SubString:</b> varname = " & A_varname & "</p>" & VbCrLf
If Not loadfile(A_varname) Then
Call halt("SubString: unable to load " & A_varname & ".")
End If
MM_String = GetVar(A_varname)
m_oRegExp.IgnoreCase = True
m_oRegExp.Global = True
m_oRegExp.Pattern = "(" & BeginTag & ")([^ \t\r\n" & EndTag &"]+)" & EndTag
Set Matches = m_oRegExp.Execute(MM_String)
For Each Match In Matches
if m_oVarVals.Exists(Match.SubMatches(1)) Then
m_oRegExp.Pattern = Match.Value
MM_String = m_oRegExp.Replace(MM_String, m_oVarVals.Item(Match.SubMatches(1)))
End If
Next
SubString = MM_String
End Function
'####
'##
'## @same phplib::template->subst
'##
Public Function subst(ByVal A_varname)
subst = SubString(A_varname)
End Function
'####
'## This is shorthand for print SubString(A_varname). See SubString for further
'## details.
'##
'## usage: oTemplate.WriteSubString string A_varname
'##
'## @param A_varname the name of the variable within which variables are to be substituted
'## @access public
'## @see SubString
'##
Public Sub WriteSubString(ByVal A_varname)
'############################################################
If Debug = 4 Then Response.Write "<p><b>WriteSubString:</b> varname = " & A_varname & "</p>" & VbCrLf
Response.Write SubString(A_varname)
End Sub
'####
'##
'## @same phplib::template->psubst
'##
Public Sub psubst(ByVal A_varname)
Call WriteSubString(A_varname)
End Sub
'####
'## The function substitutes the values of all defined variables in the variable
'## named A_varname and stores or appends the result in the variable named A_target.
'##
'## It may be called with either a target and a varname as two strings or a
'## target as a string and an array of variable names in varname.
'##
'## The function inserts the new value of the variable into the oVarVeys and
'## $varvals hashes. It is not necessary for a variable to exist in these hashes
'## before calling this function.
'##
'## An optional third parameter allows the value for each varname to be appended
'## to the existing target variable instead of replacing it. The default is to
'## replace.
'##
'## If A_target and A_varname are both strings, the substituted value of the
'## variable A_varname is inserted into or appended to A_target.
'##
'## Returns: the last value assigned to A_target.
'##
'## usage: oTemplate.Parse string A_target, string A_varname, boolean A_append
'## usage: string = oTemplate.Parse( string A_target, string A_varname, boolean A_append )
'## or
'## usage: oTemplate.Parse string A_target, array(A_varname1, A_varname2, ...) , boolean A_append
'## usage: string = oTemplate.Parse( string A_target, array(A_varname1, A_varname2, ...), boolean A_append)
'##
'## @param A_target a string containing the name of the variable into which substituted $varnames are to be stored
'## @param A_varname if a string, the name the name of the variable to substitute or if an array a list of variables to be substituted
'## @param A_append if true, the substituted variables are appended to $target otherwise the existing value of $target is replaced
'## @access public
'## @return string
'## @see SubString
'##
'## @same phplib::template->pparse
'##
Public Function Parse(ByVal A_target, ByVal A_varname, ByVal A_append)
'############################################################
Dim MM_String, i, num
If Not IsArray(A_varname) Then
If Debug = 4 Then Response.Write "<p><b>Parse:</b> (with scalar) target = " & A_target & ", varname = " & A_varname & ", append = " & A_append & "</p>" & VbCrLf
MM_String = SubString(A_varname)
if A_append = True Then
MM_String = GetVar(A_target) & MM_String
Call SetVar(A_target, MM_String)
Else
Call SetVar(A_target, MM_String)
End If
Else
num = Ubound(A_varname)
For i = 0 To num
If Debug = 4 Then Response.Write "<p><b>Parse:</b> (with array) target = " & A_target & ", varname = " & A_varname(i) & ", append = " & A_append & "</p>" & VbCrLf
MM_String = SubString(A_varname(i))
if A_append = True Then
MM_String = GetVar(A_target) & MM_String
Call SetVar(A_target, MM_String)
Else
Call SetVar(A_target, MM_String)
End If
Next
End If
If Debug = 4 Then Response.Write "<p><b>Parse:</b> completed</p>" & VbCrLf
Parse = MM_String
End Function
'####
'## This is shorthand for print Parse(...) and is functionally identical.
'## See Parse for further details.
'##
'## Returns: always returns void.
'##
'## usage: oTemplate.Write string A_target, string A_varname
'##
'## @param A_target a string containing the name of the variable into which substituted $varnames are to be stored
'## @param A_varname if a string, the name the name of the variable to substitute or if an array a list of variables to be substituted
'## @access public
'## @return void
'## @see Parse
'##
Public Sub Write(ByVal A_target, ByVal A_varname)
'############################################################
Dim MM_string
If Debug = 4 Then Response.Write "<p><b>Write:</b> passing parameters to parse...</p>" & VbCrLf
MM_string = Parse(A_target, A_varname, False)
MM_string = Finish(MM_string)
Response.Write MM_string
End Sub
'####
'##
'## @see Write
'##
Public Sub AppendWrite(ByVal A_target, ByVal A_varname)
'############################################################
Dim MM_string
If Debug = 4 Then Response.Write "<p><b>Write:</b> passing parameters to parse...</p>" & VbCrLf
MM_string = Parse(A_target, A_varname, True)
MM_string = Finish(MM_string)
Response.Write MM_string
End Sub
'####
'##
'## @same phplib::template->pparse
'##
Public Sub pparse(ByVal A_target, ByVal A_varname, ByVal A_append)
'############################################################
If CBool(A_append) = True Then
Call AppendWrite(A_target, A_varname)
Else
Call Write(A_target, A_varname)
End If
End Sub
'####
'## This function returns an associative object of all defined variables with the
'## name as the key and the value of the variable as the value.
'##
'## This is mostly useful for debugging. Also note that $this->debug can be used
'## to echo all variable assignments as they occur and to trace execution.
'##
'## Returns: a hash of all defined variable values keyed by their names.
'##
'## usage: oTemplate.get_vars()
'##
'## @access public
'## @return object
'##
Public Function GetVars()
'############################################################
If Debug = 4 Then Response.Write "<p><b>GetVars:</b> constructing dictionary of vars...</p>" & VbCrLf
Set GetVars = m_oVarVals
End Function
'####
'##
'## @same phplib::template->get_vars
'##
Public Function get_vars()
Set get_vars = GetVars()
End Function
'####
'## This function returns the value of the variable named by A_varname.
'## If A_varname references a file and that file has not been loaded yet, the
'## variable will be reported as empty.
'##
'## When called with an array of variable names this function will return a a
'## hash of variable values keyed by their names.
'##
'## Returns: a string or an array containing the value of $varname.
'##
'## usage: GetVar(string A_varname)
'## or
'## usage: GetVar(array A_varname)
'##
'## @param A_varname if a string, the name the name of the variable to get the value of, or if an array a list of variables to return the value of
'## @access public
'## @return string or object
'##
Public Function GetVar(ByVal A_varname)
'############################################################
Dim MM_String, MM_oVars, i, num
If Not IsArray(A_varname) Then
'MM_String = ""
if A_varname <> "" Then
If m_oVarVals.Exists(A_varname) Then
MM_String = m_oVarVals.Item(A_varname)
End If
End If
If Debug = 2 Then Response.Write "<b>GetVar:</b> (with scalar) <b>" & A_varname & "</b> = " & Server.HTMLEncode(MM_String) & "<br>" & VbCrLf
GetVar = MM_String
Else
Set MM_oVars = CreateObject("Scripting.Dictionary")
num = UBound(A_varname)
For i=0 To num
If m_oVarVals.Exists(A_varname(i)) Then
MM_String = m_oVarVals.Item(A_varname(i))
MM_oVars.Add A_varname(i), MM_String
End If
If Debug = 2 Then Response.Write "<b>GetVar:</b> (with array) <b>" & A_varname(i) & "</b> = " & Server.HTMLEncode(MM_String) & "<br>" & VbCrLf
Next
Set GetVar = MM_oVars
End If
End Function
'####
'##
'## @same phplib::template->get_var
'##
Public Function get_var(ByVal A_varname)
If Not IsArray(A_varname) Then
get_var = GetVar(A_varname)
Else
Set get_var = GetVar(A_varname)
End If
End Function
'####
'## This functions clears the value of a variable.
'##
'## It may be called with either a varname as a string or an array with the
'## values being the varnames to be cleared.
'##
'## The function sets the value of the variable in the oVarKeys and oVarVals
'## hashes to "". It is not necessary for a variable to exist in these hashes
'## before calling this function.
'##
'##
'## usage: oTemplate.ClearVar string A_varname
'## or
'## usage: oTemplate.ClearVar array (A_varname1, A_varname2, ...)
'##
'## @param $varname either a string containing a varname or an array of varnames.
'## @access public
'## @return void
'##
Public Sub ClearVar(ByVal A_varname)
'############################################################
Dim i, num
If Not IsArray(A_varname) Then
If A_varname <> "" Then
If Debug = 1 Then Response.Write "<b>clear_var:</b> (with scalar) <b>" & A_varname & "</b><br>" & VbCrLf
Call SetVar(A_varname, "")
End If
Else
num = UBound(A_varname)
For i=0 To num
If Debug = 1 Then Response.Write "<b>clear_var:</b> (with array) <b>" & A_varname(i) & "</b><br>" & VbCrLf
Call SetVar(A_varname(i), "")
Next
End If
End Sub
'####
'##
'## @same phplib::template->clear_var
'##
Public Sub clear_var(ByVal A_varname)
Call ClearVar(A_varname)
End Sub
'####
'## This functions unsets a variable completely.
'##
'## It may be called with either a varname as a string or an array with the
'## values being the varnames to be cleared.
'##
'## The function removes the variable from the oVarKeys and oVarVals hashes.
'## It is not necessary for a variable to exist in these hashes before calling
'## this function.
'##
'##
'## usage: oTemplate.unSetVar string A_varname
'## or
'## usage: oTemplate.unSetVar array(A_varname1, A_varname2, ...)
'##
'## @param A_varname either a string containing a varname or an array of varnames.
'## @access public
'##
Public Sub unSetVar(ByVal A_varname)
'############################################################
Dim i, num
If Not IsArray(A_varname) Then
If A_varname <> "" Then
If Debug = 1 Then Response.Write "<b>unSetVar:</b> (with scalar) <b>" & A_varname & "</b><br>" & VbCrLf
If m_oVarKeys.Exists(A_varname) Then
m_oVarKeys.Remove A_varname
End If
If m_oVarVals.Exists(A_varname) Then
m_oVarVals.Remove A_varname
End If
End If
Else
num = UBound(A_varname)
For i=0 To num
If A_varname(i) <> "" Then
If Debug = 1 Then Response.Write "<b>unSetVar:</b> (with array) <b>" & A_varname & "</b><br>" & VbCrLf
If m_oVarKeys.Exists(A_varname(i)) Then
m_oVarKeys.Remove A_varname(i)
End If
If m_oVarVals.Exists(A_varname(i)) Then
m_oVarVals.Remove A_varname(i)
End If
End If
Next
End If
End Sub
'####
'##
'## @same phplib::template->unset_var
'##
Public Sub unset_var(ByVal A_varname)
Call unSetVar(A_varname)
End Sub
'####
'## This function returns a hash of unresolved variable names in A_varname, keyed
'## by their names.
'##
'## Returns: a hash of varname/varname pairs or false on error.
'##
'## usage: GetUndefined(string A_varname)
'##
'## @param A_varname a string containing the name the name of the variable to scan for unresolved variables
'## @access public
'## @return array
'##
Public Function GetUndefined(ByVal A_varname)
'############################################################
Dim MM_String, MM_result
If Debug = 4 Then Response.Write "<p><b>GetUndefined:</b> varname = " & A_varname & "</p>" & VbCrLf
If Not loadfile(A_varname) Then
Call halt("get_undefined: unable to load " & A_varname & ".")
GetUndefined = False
Exit Function
End If
MM_String = GetVar(A_varname)
'Set MM_result = CreateObject("Scripting.Dictionary")
m_oRegExp.IgnoreCase = True
m_oRegExp.Global = True
m_oRegExp.Pattern = "(" & BeginTag & ")([^ \t\r\n" & EndTag &"]+)" & EndTag
Set Matches = m_oRegExp.Execute(MM_String)
i = 0
For Each Match In Matches
if Not m_oVarVals.Exists(Match.SubMatches(1)) Then
If Debug = 4 Then Response.Write "<p><b>get_undefined:</b> undefined: " & SubMatches(1) & "</p>" & VbCrLf
'MM_result.Add Match.SubMatches(1), Match.SubMatches(1)
MM_result(i) = Match.SubMatches(1)
i = i + 1
End If
Next
'if MM_result.Count > 0 Then
' Set GetUndefined = MM_result
If IsArray(MM_result) Then
GetUndefined = MM_result
Else
GetUndefined = False
End If
End Function
'####
'##
'## @same phplib::template->get_undefined
'##
Public Function get_undefined(ByVal A_varname)
'############################################################
get_undefined = GetUndefined
End Function
'============================================================
'方法: finish (兼容 phplib)
'目的: 檢查完成
'參數(shù): A_varname - string
'返回: string
'############################################################
Public Function Finish(ByVal A_String)
'############################################################
Dim MM_String
Select Case Unknown
case "keep"
MM_String = A_String
case "remove"
m_oRegExp.IgnoreCase = True
m_oRegExp.Global = True
m_oRegExp.Pattern = "(" & BeginTag & ")([^ \t\r\n" & EndTag &"]+)" & EndTag
MM_String = m_oRegExp.Replace(A_String, "")
case "comment"
m_oRegExp.IgnoreCase = True
m_oRegExp.Global = True
m_oRegExp.Pattern = "(" & BeginTag & ")([^ \t\r\n" & EndTag &"]+)" & EndTag
Set Matches = m_oRegExp.Execute(A_String)
For Each Match In Matches
MM_String = m_oRegExp.Replace(A_String, "<!-- Template variable " & Match.SubMatches(1) &" undefined -->")
Next
End Select
Finish = MM_String
End Function
'####
'## This function returns the finished version of the value of the variable named
'## by $varname. That is, the policy regarding unresolved variable names will be
'## applied to the variable A_varname and the result returned.
'##
'## Returns: a finished string derived from the variable A_varname.
'##
'## usage: oTemplate.GetVariable(string A_varname)
'##
'## @param A_varname a string containing the name of the variable to finish
'## @access public
'## @return string
'## @see SetUnknowns
'## @see Finish
'##
Public Function GetVariable(ByVal A_varname)
'############################################################
GetVariable = Finish(GetVar(A_varname))
End Function
'Public Function get(ByVal A_varname)
'沖突不支持
'End Function
'####
'## This function prints the finished version of the value of the variable named
'## by $varname. That is, the policy regarding unresolved variable names will be
'## applied to the variable A_varname then it will be printed.
'##
'## usage: oTemplate.WriteVariable string A_varname
'##
'## @param A_varname a string containing the name of the variable to finish and print
'## @access public
'## @see SetUnknowns
'## @see Finish
'##
Public Sub WriteVariable(ByVal A_varname)
'############################################################
Response.Write Finish(GetVal(A_varname))
End Sub
'####
'##
'## @see WriteVariable
'## @same phplib::template->p
'##
Public Sub p(ByVal A_varname)
Call WriteVariable(A_varname)
End Sub
'####
'## When called with a relative pathname, this function will return the pathname
'## with Root prepended. Absolute pathnames are returned unchanged.
'##
'## Returns: a string containing an absolute pathname.
'##
'## usage: filename(string A_filename)
'##
'## @param A_filename a string containing a filename
'## @access private
'## @return string
'## @see Root, SetRoot
'##
'## @same phplib::template->filename
'##
Private Function filename(ByVal A_filename)
'############################################################
Dim MM_FSO
If Debug = 4 Then Response.Write "<p><b>filename:</b> filename = " & A_filename & "</p>" & VbCrLf
'If Len(A_filename) > 0 Then
Set MM_FSO = CreateObject("Scripting.FileSystemObject")
If Left(A_filename, 1) = "/" Then
A_filename = Right(A_filename, len(A_filename) - 1)
End If
A_filename = Root & A_filename
A_filename = Server.MapPath(A_filename)
If Not MM_FSO.FileExists(A_filename) Then
Call halt("filename: file " & A_filename & " does not exist.")
End If
filename = A_filename
'Else
' Call halt("filename: filename is empty")
'End If
End Function
'####
'## If a variable's value is undefined and the variable has a filename stored in
'## ofile.Item(A_varname) then the backing file will be loaded and the file's
'## contents will be assigned as the variable's value.
'##
'## Note that the behaviour of this function changed slightly after the 7.2d
'## release. Where previously a variable was reloaded from file if the value
'## was empty, now this is not done. This allows a variable to be loaded then
'## set to "", and also prevents attempts to load empty variables. Files are
'## now only loaded if oVarVals.Item(A_varname) is unset.
'##
'## Returns: true on success, false on error.
'##
'## usage: loadfile(string A_varname)
'##
'## @param A_varname a string containing the name of a variable to load
'## @access private
'## @return boolean
'## @see SetFile, SetFiles
'##
'## @same phplib::template->loadfile
'##
Private Function loadfile(ByVal A_varname)
'############################################################
Dim MM_FSO, MM_oFile, MM_filename, MM_FileSting, MM_bool
If Debug = 4 Then Response.Write "<p><b>loadfile:</b> varname = " & A_varname & "</p>" & VbCrLf
MM_bool = true
If Not m_oFile.Exists(A_varname) Then
loadfile = MM_bool
If Debug = 4 Then Response.Write "<p><b>loadfile:</b> varname " & A_varname & " does not reference a file</p>" & VbCrLf
Exit Function
End If
If m_oVarVals.Exists(A_varname) Then
loadfile = MM_bool
If Debug = 4 Then Response.Write "<p><b>loadfile:</b> varname " & A_varname & " is already loaded</p>" & VbCrLf
Exit Function
End If
MM_filename = m_oFile.Item(A_varname)
Set MM_FSO = CreateObject("Scripting.FileSystemObject")
Set MM_oFile = MM_FSO.OpenTextFile(MM_filename)
MM_FileSting = MM_oFile.ReadAll
'MM_FileSting = Trim(MM_FileSting)
If MM_FileSting = "" Then
MM_bool = false
Call halt("loadfile: While loading " & A_varname & ", " & MM_filename & " does not exist or is empty.")
Else
If Debug = 4 Then Response.Write "<b>loadfile:</b> loaded " & MM_filename & " into " & A_varname & "<br>" & VbCrLf
Call SetVar(A_varname, MM_FileSting)
End If
MM_oFile.Close
Set MM_oFile = Nothing
set FSO = nothing
loadfile = MM_bool
End Function
'####
'## This function will construct a regexp for a given variable name with any
'## special chars quoted.
'##
'## Returns: a string containing an escaped variable name.
'##
'## usage: varname(string A_varname)
'##
'## @param A_varname a string containing a variable name
'## @access private
'## @return string
'## @same phplib::template->varname
'##
Private Function varname(ByVal A_varname)
'############################################################
varname = BeginTag & A_varname & EndTag
End Function
'####
'## This function is called whenever an error occurs and will handle the error
'## according to the policy defined in IsHalt. Additionally the
'## error message will be saved in m_strLastError.
'##
'## Returns: always returns false.
'##
'## usage: halt(string A_message)
'##
'## @param $msg a string containing an error message
'## @access private
'## @return void
'## @see IsHalt
'##
Private Sub halt(ByVal A_message)
'############################################################
m_strLastError = A_message
If IsHalt <> "no" Then Call haltmsg(A_message)
If IsHalt = "yes" Then
Response.Write "<b>Halted.</b>"
Response.End
End If
End Sub
'####
'## This function prints an error message.
'## It can be overridden by your subclass of Template. It will be called with an
'## error message to display.
'##
'## usage: haltmsg(string A_message)
'##
'## @param A_message a string containing the error message to display
'## @access public
'## @return void
'## @see halt
'##
Public Sub haltmsg(ByVal A_message)
'############################################################
Response.Write "<b>Template Error:</b>" & A_message & "<br>"
End Sub
'####
'## Class constructor, set class default attributes, you can change it
'## @see Property Let Debug
'## @see Property Let Unknown
'## @see Property Let IsHalt
'## @see Property Let BeginTag
'## @see Property Let EndTag
'####
Private Sub class_Initialize
Debug = 0
Unknown = "remove"
IsHalt = "yes"
m_strLastError = ""
BeginTag = "{"
EndTag = "}"
m_strRoot = "templates/"
Set m_oFile = CreateObject("Scripting.Dictionary")
Set m_oVarKeys = CreateObject("Scripting.Dictionary")
Set m_oVarVals = CreateObject("Scripting.Dictionary")
Set m_oRegExp = New RegExp
m_strName = "aspTemplate"
m_strVersion = "1.0.0"
If Debug = 4 Then Response.Write "<p><b>Template:</b> root = " & m_strRoot & ", unknowns = " & Unknown & "</p>" & VbCrLf
End Sub
'####
'## Class destructor, free memory.
'####
Private Sub class_Terminate
Set m_oFile = Nothing
Set m_oVarKeys = Nothing
Set m_oVarVals = Nothing
Set m_oRegExp = Nothing
End Sub
End Class
%>
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