libapache2-mod-plibapache2-mod-perl2-2.0.4::docs::api::Apache2::Directive(3pm)NAMEApache2::Directive - Perl API for manipulating the Apache configuration
tree
Synopsis
use Apache2::Directive ();
my $tree = Apache2::Directive::conftree();
my $documentroot = $tree->lookup('DocumentRoot');
my $vhost = $tree->lookup('VirtualHost', 'localhost:8000');
my $servername = $vhost->{'ServerName'};
use Data::Dumper;
print Dumper $tree->as_hash;
my $node = $tree;
while ($node) {
print $node->as_string;
#do something with $node
my $directive = $node->directive;
my $args = $node->args;
my $filename = $node->filename;
my $line_num = $node->line_num;
if (my $kid = $node->first_child) {
$node = $kid;
}
elsif (my $next = $node->next) {
$node = $next;
}
else {
if (my $parent = $node->parent) {
$node = $parent->next;
}
else {
$node = undef;
}
}
}
Description
"Apache2::Directive" provides the Perl API for manipulating the Apache
configuration tree
API
"Apache2::Directive" provides the following functions and/or methods:
"args"
Get the arguments for the current directive:
$args = $node->args();
obj: $node ( "Apache2::Directive object" )
ret: $args ( string )
Arguments are separated by a whitespace in the string.
since: 2.0.00
For example, in httpd.conf:
PerlSwitches -M/opt/lib -M/usr/local/lib -wT
And later:
my $tree = Apache2::Directive::conftree();
my $node = $tree->lookup('PerlSwitches');
my $args = $node->args;
$args now contains the string "-M/opt/lib -M/usr/local/lib -wT"
"as_hash"
Get a hash representation of the configuration tree, in a format
suitable for inclusion in <Perl> sections.
$config_hash = $conftree->as_hash();
obj: $conftree ( "Apache2::Directive object" )
The config tree to stringify
ret: $config_hash ( HASH reference )
since: 2.0.00
For example: in httpd.conf:
<Location /test>
SetHandler perl-script
PerlHandler Test::Module
</Location>
And later:
my $tree = Apache2::Directive::conftree();
my $node = $tree->lookup('Location', '/test/');
my $hash = $node->as_hash;
$hash now is:
{
'SetHandler' => 'perl-script',
'PerlHandler' => 'Test::Module',
}
"as_string"
Get a string representation of the configuration node, in httpd.conf
format.
$string = $node->as_string();
obj: $node ( "Apache2::Directive object" )
The config tree to stringify
ret: $string ( string )
since: 2.0.00
For example: in httpd.conf:
<Location /test>
SetHandler perl-script
PerlHandler Test::Module
</Location>
And later:
my $tree = Apache2::Directive::conftree();
my $node = $tree->lookup('Location', '/test/');
my $string = $node->as_string;
$string is now:
SetHandler perl-script
PerlHandler Test::Module
"conftree"
Get the root of the configuration tree:
$conftree = Apache2::Directive::conftree();
obj: "Apache2::Directive" ( class name )
ret: $conftree ( "Apache2::Directive object" )
since: 2.0.00
"directive"
Get the name of the directive in $node:
$name = $node->directive();
obj: $node ( "Apache2::Directive object" )
ret: $name ( string )
since: 2.0.00
"filename"
Get the filename the configuration node was created from:
$filename = $node->filename();
obj: $node ( "Apache2::Directive object" )
ret: $filename ( string )
since: 2.0.00
For example:
my $tree = Apache2::Directive::conftree();
my $node = $tree->lookup('VirtualHost', 'example.com');
my $filename = $node->filename;
$filename is now the full path to the httpd.conf that VirtualHost was
defined in.
If the directive was added with "add_config()", the filename will be
the path to the httpd.conf that trigerred that Perl code.
"first_child"
Get the first child node of this directive:
$child_node = $node->first_child;
obj: $node ( "Apache2::Directive object" )
ret: $child_node ( "Apache2::Directive object" )
Returns the first child node of $node, "undef" if there is none
since: 2.0.00
"line_num"
Get the line number in a filename this node was created at:
$lineno = $node->line_num();
obj: $node ( "Apache2::Directive object" )
arg1: $lineno (integer)
since: 2.0.00
"lookup"
Get the node(s) matching a certain value.
$node = $conftree->lookup($directive, $args);
@nodes = $conftree->lookup($directive, $args);
obj: $conftree ( "Apache2::Directive object" )
The config tree to stringify
arg1: $directive ( string )
The name of the directive to search for
opt arg2: "args" ( string )
Optional args to the directive to filter for
ret: $string ( string / ARRAY of HASH refs )
In LIST context, it returns all matching nodes.
In SCALAR context, it returns only the first matching node.
If called with only $directive value, this method returns all nodes
from that directive. For example:
@Alias = $conftree->lookup('Alias');
returns all nodes for "Alias" directives.
If called with an extra $args argument, it returns only nodes where
both the directive and the args matched. For example:
$VHost = $tree->lookup('VirtualHost', '_default_:8000');
since: 2.0.00
"next"
Get the next directive node in the tree:
$next_node = $node->next();
obj: $node ( "Apache2::Directive object" )
ret: $next_node ( "Apache2::Directive object" )
Returns the next sibling of $node, "undef" if there is none
since: 2.0.00
"parent"
Get the parent node of this directive:
$parent_node = $node->parent();
obj: $node ( "Apache2::Directive object" )
ret: "parent_node" ( "Apache2::Directive object" )
Returns the parent of $node, "undef" if this node is the root node
since: 2.0.00
See Also
mod_perl 2.0 documentation.
Copyright
mod_perl 2.0 and its core modules are copyrighted under The Apache
Software License, Version 2.0.
Authors
The mod_perl development team and numerous contributors.
perl v5.10.1libapache2-mod-perl2-2.0.4::docs::api::Apache2::Directive(3pm)
