在解决Iif问题时,为了判断iif语句是否合法,同时找出其中的条件,返回值True及返回值False。却不自然中写出了一个通用的函数模块,该函数能解决闭合符号形式中的一串文字。如”( … )”、”[ … ]”等,看官也可以自己设定一个闭合符号或字符串,但必须是对称出现,如“AVB”和“Def”便可以组合成一对,这样对于字符串AVBCdeOkDef的闭合符号中。现将这些函数整理如下,参数、返回值及函数功用都已经在注释中说明,希望本函数模块能对VB忠实爱好者有所帮助。
' --------------------------------------------------------------------------
' 从某一段文字中查找某一个符号(须考虑大小写),并且返回该符号的所有位置索引
' douhapy 2005-01-31
'
' 参数:
' strSentence :任意一段文字
' strSymbol :需要查找的特殊符号,或字符串
' SymbolIndex() :返回该符号在文字中的所处位置索引
' blCaseMatch :是否必须大小写匹配 (True 大小写必须匹配)
' blDesc :是否降序排列SymbolIndex中的数据(True 为降序排列索引)
'
' 返回值:
' True 成功找到该符号,同时SymbolIndex有相应的值
' --------------------------------------------------------------------------
Function CheckSymbolFromSentence(ByVal strSentence As String, ByVal strSymbol As String, _
ByRef symbolIndex() As Integer, Optional ByVal blCaseMatch = True, Optional ByVal blDesc = False) As Boolean
Dim intSymbolIndex() As Integer
Dim strTmp As String
Dim intTmp As Integer
Dim blReturn As Boolean
Dim i As Integer
strTmp = strSentence: blReturn = False: i = 0
If blDesc Then
If blCaseMatch Then
intTmp = InStrRev(strTmp, strSymbol)
Else
intTmp = InStrRev(strTmp, strSymbol, -1, vbTextCompare)
End If
Else
If blCaseMatch Then
intTmp = InStr(strTmp, strSymbol)
Else
intTmp = InStr(1, strTmp, strSymbol, vbTextCompare)
End If
End If
Do While intTmp <> 0
blReturn = True
ReDim Preserve intSymbolIndex(i)
intSymbolIndex(i) = intTmp
intTmp = intTmp - 1
If intTmp <> 0 Then
If blDesc Then
If blCaseMatch Then
intTmp = InStrRev(strTmp, strSymbol, intTmp)
Else
intTmp = InStrRev(strTmp, strSymbol, intTmp, vbTextCompare)
End If
Else
If blCaseMatch Then
intTmp = InStr(intTmp + 1, strTmp, strSymbol)
Else
intTmp = InStr(intTmp + 1, strTmp, strSymbol, vbTextCompare)
End If
End If
End If
i = i + 1
Loop
CheckSymbolFromSentence = blReturn
symbolIndex = intSymbolIndex
Erase intSymbolIndex
End Function
' --------------------------------------------------------------------------
' 获取任意一段文字"( ... )"闭合符号中的字符串数据
' douhapy 2005-01-31
'
' 参数:
' strSentence :任意一段文字
' LeftBracketIndex:该段文字中闭合符号左符号的索引
' LeftCloseSymbol :闭合符号的左符号
' RightCloseSymbol:闭合符号的右符号
' blCaseMatch :是否必须大小写匹配 (True 大小写必须匹配)
'
' 返回值
' 若成功 则返回闭合括号中的字符串
' 否则 返回空字符串
' --------------------------------------------------------------------------
Function GetCloseString(ByVal strSentence As String, ByVal LeftBracketIndex As Integer, _
Optional ByVal LeftCloseSymbol As String = "(", Optional ByVal RightCloseSymbol As String = ")", _
Optional ByVal blCaseMatch As Boolean = True) As String
Dim strReturn As String