This was an XSLT 1.0 recursive solution:
https://stackoverflow.com/a/5283744/36305
Based on this algorithm one can produce a non-recursive XSLT 2.0 solution
(and even a single XPath 2 expression).
Here is a first, non-polished but working non-recursive MultiReplace
implementation in XSLT 2.0 -- just 58 lines and well-formatted. This
implementation also solves the problem of overlapping replacement patterns:
<xsl:stylesheet version="2.0" xmlns:xsl="
http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema"; xmlns:my="my:my">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<my:params xml:space="preserve">
<pattern>
<old>corelation</old>
<new>dependency</new>
</pattern>
<pattern>
<old>relation</old>
<new>tie</new>
</pattern>
<pattern>
<old>
</old>
<new><br/></new>
</pattern>
<pattern>
<old>quick</old>
<new>slow</new>
</pattern>
<pattern>
<old>fox</old>
<new>elephant</new>
</pattern>
<pattern>
<old>brown</old>
<new>white</new>
</pattern>
</my:params>
<xsl:variable name="vPatterns"
select="document('')/*/my:params/*"/>
<xsl:template match="/">
<xsl:sequence select="my:MultuReplace(/*)"/>
</xsl:template>
<xsl:function name="my:MultuReplace">
<xsl:param name="pText" as="xs:string*"/>
<xsl:variable name="vStartingIndexes" select=
"for $ind in 1 to string-length($pText),
$hasMatchingPattern in
exists($vPatterns[starts-with(substring($pText, $ind), old)])
return
$ind[$hasMatchingPattern]
"/>
<xsl:variable name="actualIndexes" select=
"for $ind in $vStartingIndexes
return $ind
[position() = 1
or
(for $pos in position()[position() > 1],
$prevInd in $vStartingIndexes[$pos -1],
$prevReplacementLength in
string-length($vPatterns[starts-with(substring($pText, $prevInd),
old)][1]/old)
return
$prevReplacementLength le $ind - $prevInd
)
]
"/>
<xsl:variable name="vResultSequence" as="xs:string*">
<xsl:sequence select=
"for $pos in 1 to count($actualIndexes),
$indRepl in $actualIndexes[$pos],
$startUnprocessedText in
(if($pos = 1)
then 1
else
(for $indLastReplacedText in $actualIndexes[$pos -1],
$last-replacedText in
$vPatterns[starts-with(substring($pText, $indLastReplacedText),
old)][1]/old,
$lastReplacementLength in
string-length($last-replacedText)
return
$actualIndexes[$pos -1] +
string-length($last-replacedText)
)
)
return
( concat(
substring($pText, $startUnprocessedText, $indRepl -
$startUnprocessedText),
$vPatterns[starts-with(substring($pText, $indRepl),
old)][1]/new/string()
)
)
"/>
<xsl:sequence select=
"for $lastReplIndex in $actualIndexes[last()],
$last-replacedText in $vPatterns[starts-with(substring($pText,
$lastReplIndex), old)][1]/old,
$lastReplacementLength in string-length($last-replacedText)
return
substring($pText, $lastReplIndex + $lastReplacementLength)
"/>
</xsl:variable>
<xsl:sequence select="string-join($vResultSequence, '')"/>
</xsl:function>
</xsl:stylesheet>
When this transformation is applied on this source XML document:
<t>a corelation between a quick brown fox and a dog</t>
the wanted result is produced:
*a dependency between a slow white elephant and a dog*
Cheers,
Dimitre
On Thu, May 16, 2019 at 12:49 PM Dimitre Novatchev
dnovatchev(_at_)gmail(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
https://stackoverflow.com/a/5283744/36305
Cheers,
Dimitre
On Thu, May 16, 2019 at 11:59 AM Rick Quatro rick(_at_)rickquatro(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hi,
I have a look up file of find/change pairs that I have to apply to a text
node in my XML document. I am using XSLT 2. Here is an example of the
lookup file:
<?xml version="1.0" encoding="UTF-8"?>
<findchange_lookup>
<findchange find="Eicas" change="EICAS"/>
<findchange find="Ulb" change="ULB"/>
</findchange_lookup>
I am reading this in as a global variable, but I am not sure the best
approach for doing multiple replacements on the node. I can use recursion
like in XSLT 1, but I can't think of how to do this in XSLT 2. There could
be any number of <findchange> elements in my lookup file. Any pointers
would be appreciated. Thank you very much.
Rick
Rick Quatro
Carmen Publishing Inc.
rick(_at_)frameexpert(_dot_)com
585-729-6746
www.frameexpert.com/store/
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Cheers,
Dimitre Novatchev
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