Re: [docbook-apps] <xsl:call-template name="fo-external-image"> returns error ':1:1: Content is not allowed in prolog'

["Bob Stayton" <bobs@sagehill.net>]

Well, fop.extensions should be set when using FOP 0.20.5.  Then the
fo-external-graphic template will output the correct syntax for FOP 0.20.5.
Is there some reason fop.extensions is not being set?  You will likely run
into other problems if you don't use it.

Bob Stayton
bobs@sagehill.net


Àg-
----- Original Message ----- 
From: "Jörg Möbius" <joerg.moebius@hamburg.de>
To: "'docbook-apps List'" <docbook-apps@lists.oasis-open.org>
Sent: Saturday, March 11, 2006 10:28 PM
Subject: [docbook-apps] <xsl:call-template name="fo-external-image"> returns
error ':1:1: Content is not allowed in prolog'


Hi,
I solved the problem so this is just to inform/discuss.

My issue was/is to place a graphic within the page header. I am using FOP
('fop.extensions' is not set) in an eclipse environment. When I have to
reference files I try to use only relative paths like
'figures/xsdtrans-logo-small.gif'.

According Chapter 12. Print customizations/../Graphic in header or footer) I
tried to do within
my customizing layer with

<xsl:when test="($sequence='odd' or $sequence='even') and $position='left'">
  <xsl:if test="$pageclass != 'titlepage'">
    <fo:external-graphic content-height="30%">
      <xsl:attribute name="src">
        <xsl:call-template name="fo-external-image">
          <xsl:with-param name="filename"
select="figures/xsdtrans-logo-small.gif"/>
        </xsl:call-template>
      </xsl:attribute>
    </fo:external-graphic>
  </xsl:if>
</xsl:when>

and FOP aborted processing with error: ':1:1: Content is not allowed in
prolog'

When I do without <xsl:call-template name="fo-external-image"> like

<xsl:when test="($sequence='odd' or $sequence='even') and $position='left'">
  <xsl:if test="$pageclass != 'titlepage'">
    <fo:external-graphic content-height="30%">
      <xsl:attribute name="src">
        figures/xsdtrans-logo-small.gif
      </xsl:attribute>
    </fo:external-graphic>
  </xsl:if>
</xsl:when>

I get the intended result.

Casting a glance at <xsl:call-template name="fo-external-image"> it seems
that - without using processor extensions - the template expects the
filename in a valid url-format.

Regards

Joerg Moebius


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