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XSL: retrieve value inside special chars

Posted on 2014-09-11
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Last Modified: 2014-09-13
I want to retrieve text contained inside the special characters "Â" so that I can store in a variable.
How do I do this?

<Message>Error parsing response. The response was: ÂDISPLAY PROHIBITEDÂ</Message>


I want the variable to hold "DISPLAY PROHIBITED"
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Question by:badtz7229
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Assisted Solution

by:Geert Bormans
Geert Bormans earned 2000 total points
ID: 40317387
I have the impression that this happens only once in a Message

    <xsl:template match="Message">
        <xsl:variable name="display" select="substring-before(substring-after(., 'Â'), 'Â')"/>
        <xsl:value-of select="$display"/>
    </xsl:template>

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If it happens more in one Message, you will need some recursive processing.
Happy to provide an example in that case
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by:badtz7229
ID: 40317604
This works when I run it through debugger in Visual Studios. But for some reason fails when I run the transaction  I use to call this xsl.
It's as though the à isn't recognized.
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Accepted Solution

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Geert Bormans earned 2000 total points
ID: 40317711
I was going to warn you about a possible false interpretation of the "Ã"
XML commonly uses UTF-8 as character encoding.
UTF-8 uses 1 or more bytes for unicode characters (only 7 bits or used per byte)
The number of bytes used per character is dynamic and an indication of the numbertof bytes is found in the first byte
UTF-8 can cover the entire unicode spec using this technique
ISO-8859-1 uses always 1 byte (8 bits per byte) limiting this encoding to below 255 characters
WIN-1252 uses always 1 byte (8 bits per byte) limiting this encoding to below 255 characters, this windows encoding has all the ISO-8859-1 characters at the same location, but has some characters in a zone not used by ISO-8859-1
Now, if a tool interpretes an UTF-8 file falsely as being a ISO-8859-1 file (or WIN-1252) it would make two characters out of two bytes where the encoding actually specified this to be one UTF-8 character
If that is the case, you would spot a number of 'Ã' characters in your text

I think this is going on. Your XML does not specify the encoding, which indicates it is the default UTF-8. Visual Studio assumes it is WIN-1252 the windows default, so you see the 'Ã'
You should fix this interpretation by adding the XML encoding and take a different seperator in your substring expression
If you need to know which is the chararcter... send a original source file over
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Author Comment

by:badtz7229
ID: 40320300
Ur absolutely right about the false interpretation.
I caught it and used ur solution as well and it worked. Thanks
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Expert Comment

by:Geert Bormans
ID: 40320608
welcome
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