RE: [xsl] [XSL] Calculating Length of String Variables

["Michael Kay" <mike@xxxxxxxxxxxx>]

string-length($image_src) = '4' or '5'

You're trying to guess the syntax of XPath here, and you've guessed
something that's meaningful in the language but doesn't mean what you think.
It means

(string-length($image_src) = '4') or (boolean('5'))

and boolean('5') is true.

In XPath 2.0 you can write

string-length($image_src) = (4, 5)

In 1.0, write

string-length($image_src) = 4 or string-length($image_src) = 5

Michael Kay
http://www.saxonica.com/



> -----Original Message-----
> From: Alice Ju-Hsuan Wei [mailto:ajwei@xxxxxxxxxxx] 
> Sent: 13 September 2007 12:23
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] [XSL] Calculating Length of String Variables
> 
> Thanks to Michael and Jing. This part is now working and 
> prints out the "value of the string length" accurately.
> 
> However, when I tried to use the node with the result of 
> "123456," it prints out the "string-length" as a 6 preperly. 
> But when I try to run a "test" of action according to this 
> result, it does not perform any of the actionsth as in 
> <xsl:when test="string-length($image_src_ ='6'">, but 
> performs the actions as in 
> <xsl:when-test="string-length($image_src)='4' or '5'"> as shown below:
> 
> <xsl:when test="string-length($image_src) = '4' or '5'">
>                 <img>
>                     <xsl:attribute 
> name="src">images/<xsl:value-of select="./@url"/>.gif</xsl:attribute>
>                     <xsl:attribute name="alt"> Picture No. 
> <xsl:value-of select="./@url"/>
>                     </xsl:attribute>
>               </img>
>             </xsl:when>
> <xsl:when test="string-length($image_src) = '6' ">
>                 <img>
>                     <xsl:attribute 
> name="src">images/<xsl:value-of select="substring($image_src,1,4)"
>                         />.gif</xsl:attribute>
>                     <xsl:attribute name="alt"> Picture No.  
> <xsl:value-of select="substring($src,1,4)"/>
>                     </xsl:attribute>
>                </img>
>             </xsl:when>
> 
>   Does anyone know if there is something I should have done 
> that I have not?
> 
> Thank again.