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.\" ========================================================================
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.IX Title "XML::PatAct::Amsterdam 3pm"
.TH XML::PatAct::Amsterdam 3pm "2022-12-13" "perl v5.36.0" "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 \s-1XML\s0 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 \s-1SGML\s0 Parser (\s-1ASP\s0)
which inspired this module.
.PP
\&\s-1CAUTION:\s0 Amsterdam is a very simple style module, you will run into
it's limitations quickly with even moderately complex \s-1XML\s0 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 \fI\s-1OPTIONS\s0\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 \s-1XML\s0 element.  The Before and After strings may
contain attribute names enclosed in square brackets (`\f(CW\*(C`[\*(C'\fR' \fI\s-1NAME\s0\fR
`\f(CW\*(C`]\*(C'\fR'), these are replaced with the value of the attribute with that
name.  The special \fI\s-1NAME\s0\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(CW\*(C`parse()\*(C'\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.