Re: [xsl] Truncate input

[Abel Braaksma <abel.online@xxxxxxxxx>]

Hi M Core,

Not sure if your question is about XSLT or XSL, since there's no mention 
of either in your post.

If you want to format a number, you can use <xsl:decimal-format /> with 
format-number(value, format, name). The name in format-number refers to 
a name you predefined with <xsl:decimal-format />. Recall that 
<xsl:decimal-number /> is a top-level element. This means it must be 
right under your <xsl:stylesheet> instruction.

You may also choose to format your number using the <xsl:number /> 
instruction or using string concatenation functions.

If you need rounding, you can use the round(number) xpath function, but 
since you say that 3,45678 must become 3,45, I guess you need 
truncating. If you use round(), be aware that it only returns integers.

-- using <xsl:number />
<xsl:number value="$yourinput" format="1.00" />

-- using round()
<xsl:value-of select="round($yourinput * 100) div 100" />

-- using fixed() (will truncate)
<xsl:value-of select="fixed($yourinput * 100) div 100" />

-- using string functions:
<xsl:value-of select="concat ( substring-before( $yourinput, '.' ) , '.' 
, substring ( substring-after ( $yourinput, '.' ) , 1 , 2 ) )" />

You may have noticed that all these functions take input as a number 
that has a dot for decimal. You use a comma for decimal, so you may need 
to convert it. The easy thing to do that is using translate(string, tr, 
repl), I think:

-- converting your number:
<xsl:value-of select="translate ( $yournumber , ',' , '.' )" />

All the above snippets work with XSLT 1.0. But you can use them with 2.0 
if you like or need it. There are many more possibilities.

Cheers,
Abel Braaksma
http://abelleba.metacarpus.com


m.core@xxxxxxxxxxxxxxxx wrote:
> Hi all,
>
> i need to truncate input that can be write in a box i have a var v1=2 if after coma there is more then v1 numbers then it must be truncate to v1 es...
>
> if i insert 3,45678 in the input it let me write only 3,45 because v1=2 
>
> i think this must be done in the tags <input > </input>
> i'm already in the case that the number is real ecc..
>
> How can i do?..is there an option like <input format="">?
>
> thx for replies