Name
Data::Edit::Xml - Edit data held in Xml format
Synopsis
use Data::Edit::Xml;
say STDERR Data::Edit::Xml::new(inputString=>< # Docbook
Diagnose the problem
This can be quite difficult
Sometimes impossible
ls -la
drwxr-xr-x 2 phil phil 4096 Jun 15 2016 Desktop
drwxr-xr-x 2 phil phil 4096 Nov 9 20:26 Downloads
END
by(sub # Transform Docbook to Dita
{my ($o, $p) = @_;
if ($o->at(qw(pre p li sli)) and $o->isOnlyChild)
{$o->change($p->isFirst ? qw(cmd) : qw(stepresult));
$p->unwrap;
}
elsif ($o->at(qw(li sli)) and $o->over(qr(\Ap( p)+\Z)))
{$_->change($_->isFirst ? qw(cmd) : qw(info)) for $o->contents;
}
})->by(sub
{my ($o) = @_;
$o->change(qw(step)) if $o->at(qw(li sli));
$o->change(qw(steps)) if $o->at(qw(sli));
$o->id = 's'.($o->position+1) if $o->at(qw(step));
$o->id = 'i'.($o->index+1) if $o->at(qw(info));
$o->wrapWith(qw(screen)) if $o->at(qw(CDATA stepresult));
})->string =~ s/>>\n
#
# Diagnose the problem
# This can be quite difficult
# Sometimes impossible
#
#
# ls -la
#
#
# drwxr-xr-x 2 phil phil 4096 Jun 15 2016 Desktop
# drwxr-xr-x 2 phil phil 4096 Nov 9 20:26 Downloads
#
#
#
#
Description
Constructor
new()
New parse - call this method statically as in Data::Edit::Xml::new()
with keyword parameters=> chosen from:
inputString a string of xml to be parsed
inputFile a file of xml to be parsed
name a symbolic name for this parse used in messages about this parse and to name output files generated by this parse
output a directory into which to write output files
errors a sub directory of 'output' into which to write a copy of the string to be parsed in the event that an xml parse error is encountered while parsing this string
cdata()
The name of the command name to use to represent text
Stringification
Print the parse tree
string($node)
Build a string from a node of a parse tree and the nodes below it
Parameter Description
1 $node Start node
stringWithCondition($node, @conditions)
Build a string from a node of a parse tree and the nodes below it
subject to conditions to reject some nodes
Parameter Description
1 $node Start node
2 @conditions conditions in effect
addConditions($node, @conditions)
Add conditions to a node
Parameter Description
1 $node Node
2 @conditions conditions to add
deleteConditions($node, @conditions)
Delete conditions applied to a node
Parameter Description
1 $node Node
2 @conditions conditions to add
listConditions($node)
List conditions applied to a node
Parameter Description
1 $node Node
isText($node)
Is this a text node?
Parameter Description
1 $node Node to test
Attributes
Get or set attributes
attr :lvalue($node, $attribute)
Value of attribute in current command
Parameter Description
1 $node Node in parse tree
2 $attribute attribute name
setAttr($node, %values)
Set the value of an attribute in a command
Parameter Description
1 $node Node in parse tree
2 %values (attribute name=>new value)*
Contents
Contents of the current node
contents($node)
Get all the nodes contained by this node as an array (not an array
reference)
Parameter Description
1 $node Node
contentBeyond($node)
Get all the nodes beyond this node at the level of this node
Parameter Description
1 $node Node
contentBefore($node)
Get all the nodes before this node at the level of this node
Parameter Description
1 $node Node
contentAsTags($node)
Get the tags of all the nodes contained by this node as a string
Parameter Description
1 $node Node
contentBeyondAsTags($node)
Get the tags of all the nodes beyond this node as a string
Parameter Description
1 $node Node
contentBeforeAsTags($node)
Get the tags of all the nodes before this node as a string
Parameter Description
1 $node Node
position($node)
Find the position of a node in its parent's content
Parameter Description
1 $node Node
index($node)
Find the position of a node in its parent's index
Parameter Description
1 $node Node
Navigation
Move around in the parse tree
context($node)
Tags of this node and its ancestors joined to make a string
Parameter Description
1 $node Node
get($node, @position)
Get a sub node under the current node by its position in each index with
position zero assumed if no position is supplied
Parameter Description
1 $node Node
2 @position position specification: (index
c($node, $tag, $position)
Get all the nodes with the tag of the specified name below the current
node
Parameter Description
1 $node Node
2 $tag tag
3 $position
first($node)
Get the first node below this node
Parameter Description
1 $node Node
last($node)
Get the last node below this node
Parameter Description
1 $node Node
isFirst($node)
Is this node first under its parent?
Parameter Description
1 $node Node
isLast($node)
Is this node last under its parent?
Parameter Description
1 $node Node
isOnlyChild($node)
Is this the only child of its parent?
Parameter Description
1 $node Node
next($node)
Get the node next to the current node
Parameter Description
1 $node Node
prev($node)
Get the node previous to the current node
Parameter Description
1 $node Node
by($node, $sub, @context)
Post-order traversal of a parse tree or sub tree
Parameter Description
1 $node Starting node
2 $sub sub to call for each sub node
3 @context accumulated context
down($node, $sub, @context)
Pre-order traversal down through a parse tree or sub tree
Parameter Description
1 $node Starting node
2 $sub sub to call for each sub node
3 @context accumulated context
at()
Check the node is in the context specified by the array of tags from the
ancestors going up the parse tree from the node
over($node, $re)
Match the tags at the level below a node against a regular expression
Parameter Description
1 $node Node
2 $re regular expression
after($node, $re)
Match the tags in the current level after a node against a regular
expression
Parameter Description
1 $node Node
2 $re regular expression
before($node, $re)
Match the tags in the current level before a node against a regular
expression
Parameter Description
1 $node Node
2 $re regular expression
up($node, @tags)
Go up to a specified context
Parameter Description
1 $node Start node
2 @tags tags identifying context
Editing
Edit the data in the parse tree
change($node, $name, @tags)
Change the name of a node in an optional tag context
Parameter Description
1 $node Node
2 $name new name
3 @tags tags defining the context
deleteAttr($node, $attr, $value)
Delete the attribute, optionally checking its value first
Parameter Description
1 $node Node
2 $attr attribute name
3 $value optional attribute value to check first
renameAttr($node, $old, $new)
Change the name of an attribute regardless of whether the new attribute
already exists
Parameter Description
1 $node Node
2 $old existing attribute name
3 $new new attribute name
changeAttr($node, $old, $new)
Change the name of an attribute unless it is already there
Parameter Description
1 $node Node
2 $old existing attribute name
3 $new new attribute name
renameAttrValue($node, $old, $oldValue, $new, $newValue)
Change the name and value of an attribute regardless of whether the new
attribute already exists
Parameter Description
1 $node Node
2 $old existing attribute name and value
3 $oldValue new attribute name and value
4 $new
5 $newValue
changeAttrValue($node, $old, $oldValue, $new, $newValue)
Change the name and value of an attribute unless it is already there
Parameter Description
1 $node Node
2 $old existing attribute name and value
3 $oldValue new attribute name and value
4 $new
5 $newValue
Structure
Change the structure of the parse tree
wrapWith($old, $tag)
Wrap the original node in a new node forcing the original node down
deepening the parse tree
Parameter Description
1 $old Node
2 $tag tag for new node
wrapContentWith($old, $tag)
Wrap the content of a node in a new node, the original content then
contains the new node which contains the original node's content
Parameter Description
1 $old Node
2 $tag tag for new node
unwrap($node)
Unwrap a node by inserting its content into its parent at the point
containing the node
Parameter Description
1 $node Node to unwrap
replaceWith($old, $new)
Replace a node (and all its content) with a new node (and all its
content)
Parameter Description
1 $old Old node
2 $new new node
Cut and Put
Move nodes around in the parse tree
cut($node)
Cut out a node - remove the node from the parse tree and return it so
that it can be put else where
Parameter Description
1 $node Node to cut out
putNext($old, $new)
Place the new node just after the original node in the content of the
parent
Parameter Description
1 $old Original node
2 $new new node
putPrev($old, $new)
Place the new node just before the original node in the content of the
parent
Parameter Description
1 $old Original node
2 $new new node
putFirst($old, $new)
Place the new node at the front of the content of the original node
Parameter Description
1 $old Original node
2 $new new node
putLast($old, $new)
Place the new node at the end of the content of the original node
Parameter Description
1 $old Original node
2 $new new node
Index of methods by name
"addConditions($node, @conditions)" "after($node, $re)" "at()" "attr
:lvalue($node, $attribute)" "before($node, $re)" "by($node, $sub,
@context)" "c($node, $tag, $position)" "cdata()" "change($node, $name,
@tags)" "changeAttr($node, $old, $new)" "changeAttrValue($node, $old,
$oldValue, $new, $newValue)" "contentAsTags($node)"
"contentBefore($node)" "contentBeforeAsTags($node)"
"contentBeyond($node)" "contentBeyondAsTags($node)" "contents($node)"
"context($node)" "cut($node)" "deleteAttr($node, $attr, $value)"
"deleteConditions($node, @conditions)" "first($node)" "get($node,
@position)" "index($node)" "isFirst($node)" "isLast($node)"
"isOnlyChild($node)" "isText($node)" "last($node)"
"listConditions($node)" "new()" "next($node)" "over($node, $re)"
"position($node)" "prev($node)" "putFirst($old, $new)" "putLast($old,
$new)" "putNext($old, $new)" "putPrev($old, $new)" "renameAttr($node,
$old, $new)" "renameAttrValue($node, $old, $oldValue, $new, $newValue)"
"replaceWith($old, $new)" "setAttr($node, %values)" "string($node)"
"stringWithCondition($node, @conditions)" "unwrap($node)" "up($node,
@tags)" "wrapContentWith($old, $tag)" "wrapWith($old, $tag)"
Installation
This module is written in 100% Pure Perl and is thus easy to read,
modify and install.
Standard Module::Build process for building and installing modules:
perl Build.PL
./Build
./Build test
./Build install
Author
philiprbrenan@gmail.com
http://www.appaapps.com
Copyright
Copyright (c) 2016 Philip R Brenan.
This module is free software. It may be used, redistributed and/or
modified under the same terms as Perl itself.