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Top Forums UNIX for Beginners Questions & Answers Need to convert bytearray into text2pcap format Post 303036535 by RudiC on Monday 1st of July 2019 09:29:04 AM
Old 07-01-2019
Try
Code:
awk '{printf "%04x %s\n", counter, $0; counter += NF}'  file
0000 84 78 ac 54 99 e4 bc 05 1d a2 00 62 00 c0 a2 00
0010 00 fc 00 0c 29 15 6c c6 a8 9d 21 93 2b 90 81 00
0020 02 6c 08 00 45 00 05 98 e5 5a 00 00 fe 11 11 ed
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XML::LibXML::Devel(3)					User Contributed Perl Documentation				     XML::LibXML::Devel(3)

NAME
XML::LibXML::Devel - makes functions from LibXML.xs available SYNOPSIS
/********************************************** * C functions you want to access */ xmlNode *return_node(); void receive_node(xmlNode *); ############################################### # XS Code void * xs_return_node CODE: RETVAL = return_node(); OUTPUT: RETVAL void xs_receive_node void *n CODE: receive_node(n); ############################################### # Perl code use XML::LibXML::Devel; sub return_node { my $raw_node = xs_return_node(); my $node = XML::LibXML::Devel::node_to_perl($raw_node); XML::LibXML::Devel::refcnt_inc($raw_node); return $node; } sub receive_node { my ($node) = @_; my $raw_node = XML::LibXML::Devel::node_from_perl($node); xs_receive_node($raw_node); XML::LibXML::Devel::refcnt_inc($raw_node); } DESCRIPTION
"XML::LibXML::Devel" makes functions from LibXML.xs available that are needed to wrap libxml2 nodes in and out of XML::LibXML::Nodes. This gives cleaner dependencies than using LibXML.so directly. To XS a library that uses libxml2 nodes the first step is to do this so that xmlNodePtr is passed as void *. These raw nodes are then turned into libxml nodes by using this "Devel" functions. Be aware that this module is currently rather experimental. The function names may change if I XS more functions and introduce a reasonable naming convention. Be also aware that this module is a great tool to cause segfaults and introduce memory leaks. It does however provide a partial cure by making "xmlMemUsed" available as "mem_used". FUNCTIONS
NODE MANAGEMENT node_to_perl node_to_perl($raw_node); Returns a LibXML::Node object. This has a proxy node with a reference counter and an owner attached. The raw node will be deleted as soon as the reference counter reaches zero. If the C library is keeping a pointer to the raw node, you need to call refcnt_inc immediately. You also need to replace xmlFreeNode by a call to refcnt_dec. node_to_perl node_from_perl($node); Returns a raw node. This is a void * pointer and you can do nothing but passing it to functions that treat it as an xmlNodePtr. The raw node will be freed as soon as its reference counter reaches zero. If the C library is keeping a pointer to the raw node, you need to call refcnt_inc immediately. You also need to replace xmlFreeNode by a call to refcnt_dec. refcnt_inc refcnt_inc($raw_node); Increments the raw nodes reference counter. The raw node must already be known to perl to have a reference counter. refcnt_dec refcnt_dec($raw_node); Decrements the raw nodes reference counter and returns the value it had before. if the counter becomes zero or less, this method will free the proxy node holding the reference counter. If the node is part of a subtree, refcnt_dec will fix the reference counts and delete the subtree if it is not required any more. refcnt refcnt($raw_node); Returns the value of the reference counter. fix_owner fix_owner($raw_node, $raw_parent); This functions fixes the reference counts for an entire subtree. it is very important to fix an entire subtree after node operations where the documents or the owner node may get changed. this method is aware about nodes that already belong to a certain owner node. MEMORY DEBUGGING $ENV{DEBUG_MEMORY} BEGIN {$ENV{DEBUG_MEMORY} = 1;}; use XML::LibXML; This turns on libxml2 memory debugging. It must be set before XML::LibXML is loaded. mem_used mem_used(); Returns the number of bytes currently allocated. EXPORT None by default. SEE ALSO
This was created to support the needs of Apache2::ModXml2. So this can serve as an example. AUTHOR
Joachim Zobel <jz-2011@heute-morgen.de> COPYRIGHT AND LICENSE
Copyright (C) 2011 by Joachim Zobel This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.1 or, at your option, any later version of Perl 5 you may have available. perl v5.18.2 2014-02-01 XML::LibXML::Devel(3)
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