Subject: [xsl] Create a bit mask ? From: Saba <saba_emailme-xslt@xxxxxxxxx> Date: Tue, 9 Nov 2004 13:54:09 -0800 (PST) |
I need to convert a number of elements into a single element with a bit mask as its value. Here is a some sample source XML snippet: <Rule Name="Rule1"> <Tag Name="Tag1"/> <Tag Name="Tag2"/> </Rule> <Rule Name="Rule2"> <Tag Name="Tag1"/> <Tag Name="Tag3"/> </Rule> <Tags> <Tag Name="Tag1"> <Id>0</Id> </Tag> <Tag Name="Tag2"> <Id>1</Id> </Tag> <Tag Name="Tag3"> <Id>2</Id> </Tag> </Tags> I need to convert this into: <Rule Name="Rule1"> <TagMap>-4</TagMap> </Rule> <Rule Name="Rule2"> <TagMap>-6</TagMap> </Rule> The value in TagMap is a 32 bit bit-mask which contains a 0 if the Tag applies to the rule and a 1 if it does not. The bit position for a tag is determined by the Tag's ID value (Starting from the right most bit) So the map for Rule1 is -4 which is 11111111111111111111111111111100 in binary. The two zeros correspond to Tag1 (Id 0) and Tag2 (Id 1). Map value for Rule2 is -6 which is 11111111111111111111111111111010 corresponding to Tag1 (Id 0) and Tag3 (Id 2). Can anyone help with this? I feel handicapped without a processing loop construct and being able to redefine the value of a variable! I am limited to using XSLT 1.0 Thanks in advance. -Saba
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