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.IX Title "XML::PatAct::Amsterdam 3"
.TH XML::PatAct::Amsterdam 3 2024-07-12 "perl v5.38.2" "User Contributed Perl Documentation"
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.SH NAME
XML::PatAct::Amsterdam \- An action module for simplistic style\-sheets
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& use XML::PatAct::Amsterdam;
\&
\& my $patterns = [ PATTERN => { Before => \*(Aqbefore\*(Aq,
\&                               After => \*(Aqafter\*(Aq },
\&                  ... ];
\&
\& my $matcher = XML::PatAct::Amsterdam\->new( I<OPTIONS> );
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
XML::PatAct::Amsterdam is a PerlSAX handler for applying
pattern-action lists to XML parses or trees.  XML::PatAct::Amsterdam
applies a very simple style sheet to an instance and outputs the
result.  Amsterdam gets it's name from the Amsterdam SGML Parser (ASP)
which inspired this module.
.PP
CAUTION: Amsterdam is a very simple style module, you will run into
it's limitations quickly with even moderately complex XML instances,
be aware of and prepared to switch to more complete style modules.
.PP
New XML::PatAct::Amsterdam instances are creating by calling `\fBnew()\fR'.
Parameters can be passed as a list of key, value pairs or a hash.  A
Patterns and Matcher options are required.  The following \fIOPTIONS\fR
are supported:
.IP Patterns 4
.IX Item "Patterns"
The pattern-action list to apply.  The list is an anonymous array of
pattern, action pairs.  Each action in the list contains either or
both a Before and an After string to copy to the output before and
after processing an XML element.  The Before and After strings may
contain attribute names enclosed in square brackets (`\f(CW\*(C`[\*(C'\fR' \fINAME\fR
`\f(CW\*(C`]\*(C'\fR'), these are replaced with the value of the attribute with that
name.  The special \fINAME\fR `\f(CW\*(C`_element\*(C'\fR' will be replaced with the
element's name.
.IP Matcher 4
.IX Item "Matcher"
An instance of the pattern or query matching module.
.IP Output 4
.IX Item "Output"
An IO::Handle or one of it's subclasses (such as IO::File), if this
parameter is not present and the AsString option is not used, the
module will write to standard output.
.IP AsString 4
.IX Item "AsString"
Return the generated output as a string from the `\f(CWparse()\fR' method
of the PerlSAX event generator.
.SH AUTHOR
.IX Header "AUTHOR"
Ken MacLeod, ken@bitsko.slc.ut.us
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBperl\fR\|(1)
.PP
``Using PatAct Modules'' and ``Creating PatAct Modules'' in libxml-perl.