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Full Discussion: How to remove /*...*/ ?
Top Forums UNIX for Beginners Questions & Answers How to remove /*...*/ ? Post 303032531 by bakunin on Tuesday 19th of March 2019 07:12:17 PM
Old 03-19-2019
Quote:
Originally Posted by MadeInGermany
This is a case for a mimimum match.
You are right: non-greedy matching takes care of a few cases. Still, what i said about regexps being unable to parse still stands. For instance, your perl-program would have problems with:

Code:
char foo[3]="/*"; char bar[3]="*/"; /* comment */

I admit, this (and some more cases i could cite) are fringe. Maybe the thread-O/P will never encounter any of these. But again, it is - in a strict sense - impossible to overcome all of these problems (some of them, yes, but not all) because a regexp engine cannot work as a parser.

I hope this helps.

bakunin
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XML::Parser::Lite(3)					User Contributed Perl Documentation				      XML::Parser::Lite(3)

NAME
XML::Parser::Lite - Lightweight regexp-based XML parser SYNOPSIS
use XML::Parser::Lite; $p1 = new XML::Parser::Lite; $p1->setHandlers( Start => sub { shift; print "start: @_ " }, Char => sub { shift; print "char: @_ " }, End => sub { shift; print "end: @_ " }, ); $p1->parse('<foo id="me">Hello World!</foo>'); $p2 = new XML::Parser::Lite Handlers => { Start => sub { shift; print "start: @_ " }, Char => sub { shift; print "char: @_ " }, End => sub { shift; print "end: @_ " }, } ; $p2->parse('<foo id="me">Hello <bar>cruel</bar> World!</foo>'); DESCRIPTION
This Perl implements an XML parser with a interface similar to XML::Parser. Though not all callbacks are supported, you should be able to use it in the same way you use XML::Parser. Due to using experimantal regexp features it'll work only on Perl 5.6 and above and may behave differently on different platforms. Note that you cannot use regular expressions or split in callbacks. This is due to a limitation of perl's regular expression implementation (which is not re-entrant). SUBROUTINES
/METHODS new Constructor. As (almost) all SOAP::Lite constructors, new() returns the object called on when called as object method. This means that the following effectifely is a no-op if $obj is a object: $obj = $obj->new(); New accepts a single named parameter, "Handlers" with a hash ref as value: my $parser = XML::Parser::Lite->new( Handlers => { Start => sub { shift; print "start: @_ " }, Char => sub { shift; print "char: @_ " }, End => sub { shift; print "end: @_ " }, } ); The handlers given will be passed to setHandlers. setHandlers Sets (or resets) the parsing handlers. Accepts a hash with the handler names and handler code references as parameters. Passing "undef" instead of a code reference replaces the handler by a no-op. The following handlers can be set: Init Start Char End Final All other handlers are ignored. Calling setHandlers without parameters resets all handlers to no-ops. parse Parses the XML given. In contrast to XML::Parser's parse method, parse() only parses strings. Handler methods Init Called before parsing starts. You should perform any necessary initializations in Init. Start Called at the start of each XML node. See XML::Parser for details. Char Called for each character sequence. May be called multiple times for the characters contained in an XML node (even for every single character). Your implementation has to make sure that it captures all characters. End Called at the end of each XML node. See XML::Parser for details Comment See XML::Parser for details XMLDecl See XML::Parser for details Doctype See XML::Parser for details Final Called at the end of the parsing process. You should perform any neccessary cleanup here. SEE ALSO
XML::Parser COPYRIGHT
Copyright (C) 2000-2007 Paul Kulchenko. All rights reserved. Copyright (C) 2008- Martin Kutter. All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. This parser is based on "shallow parser" http://www.cs.sfu.ca/~cameron/REX.html Copyright (c) 1998, Robert D. Cameron. AUTHOR
Paul Kulchenko (paulclinger@yahoo.com) Martin Kutter (martin.kutter@fen-net.de) Additional handlers supplied by Adam Leggett. perl v5.12.1 2010-03-18 XML::Parser::Lite(3)
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