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.\" ========================================================================
.\"
.IX Title "docs::api::Apache2::Directive 3"
.TH docs::api::Apache2::Directive 3 "2013-04-16" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Apache2::Directive \- Perl API for manipulating the Apache configuration tree
.SH "Synopsis"
.IX Header "Synopsis"
.Vb 1
\& use Apache2::Directive ();
\&
\& my $tree = Apache2::Directive::conftree();
\&
\& my $documentroot = $tree\->lookup(\*(AqDocumentRoot\*(Aq);
\&
\& my $vhost = $tree\->lookup(\*(AqVirtualHost\*(Aq, \*(Aqlocalhost:8000\*(Aq);
\& my $servername = $vhost\->{\*(AqServerName\*(Aq};
\&
\& 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;
\& }
\& }
\& }
.Ve
.SH "Description"
.IX Header "Description"
\&\f(CW\*(C`Apache2::Directive\*(C'\fR provides the Perl \s-1API\s0 for manipulating the Apache
configuration tree
.SH "API"
.IX Header "API"
\&\f(CW\*(C`Apache2::Directive\*(C'\fR provides the following functions and/or methods:
.ie n .SS """args"""
.el .SS "\f(CWargs\fP"
.IX Subsection "args"
Get the arguments for the current directive:
.PP
.Vb 1
\& $args = $node\->args();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: $args ( string )" 4
.el .IP "ret: \f(CW$args\fR ( string )" 4
.IX Item "ret: $args ( string )"
.PD
Arguments are separated by a whitespace in the string.
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PP
For example, in \fIhttpd.conf\fR:
.PP
.Vb 1
\& PerlSwitches \-M/opt/lib \-M/usr/local/lib \-wT
.Ve
.PP
And later:
.PP
.Vb 3
\& my $tree = Apache2::Directive::conftree();
\& my $node = $tree\->lookup(\*(AqPerlSwitches\*(Aq);
\& my $args = $node\->args;
.Ve
.PP
\&\f(CW$args\fR now contains the string \*(L"\-M/opt/lib \-M/usr/local/lib \-wT\*(R"
.ie n .SS """as_hash"""
.el .SS "\f(CWas_hash\fP"
.IX Subsection "as_hash"
Get a hash representation of the configuration tree, in a format
suitable for inclusion in <Perl> sections.
.PP
.Vb 1
\& $config_hash = $conftree\->as_hash();
.Ve
.ie n .IP "obj: $conftree ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$conftree\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $conftree ( Apache2::Directive object )"
The config tree to stringify
.ie n .IP "ret: $config_hash ( \s-1HASH\s0 reference )" 4
.el .IP "ret: \f(CW$config_hash\fR ( \s-1HASH\s0 reference )" 4
.IX Item "ret: $config_hash ( HASH reference )"
.PD 0
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.PP
For example: in \fIhttpd.conf\fR:
.PP
.Vb 4
\& <Location /test>
\& SetHandler perl\-script
\& PerlHandler Test::Module
\& </Location>
.Ve
.PP
And later:
.PP
.Vb 3
\& my $tree = Apache2::Directive::conftree();
\& my $node = $tree\->lookup(\*(AqLocation\*(Aq, \*(Aq/test/\*(Aq);
\& my $hash = $node\->as_hash;
.Ve
.PP
\&\f(CW$hash\fR now is:
.PP
.Vb 4
\& {
\& \*(AqSetHandler\*(Aq => \*(Aqperl\-script\*(Aq,
\& \*(AqPerlHandler\*(Aq => \*(AqTest::Module\*(Aq,
\& }
.Ve
.ie n .SS """as_string"""
.el .SS "\f(CWas_string\fP"
.IX Subsection "as_string"
Get a string representation of the configuration node, in
\&\fIhttpd.conf\fR format.
.PP
.Vb 1
\& $string = $node\->as_string();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
The config tree to stringify
.ie n .IP "ret: $string ( string )" 4
.el .IP "ret: \f(CW$string\fR ( string )" 4
.IX Item "ret: $string ( string )"
.PD 0
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.PP
For example: in \fIhttpd.conf\fR:
.PP
.Vb 4
\& <Location /test>
\& SetHandler perl\-script
\& PerlHandler Test::Module
\& </Location>
.Ve
.PP
And later:
.PP
.Vb 3
\& my $tree = Apache2::Directive::conftree();
\& my $node = $tree\->lookup(\*(AqLocation\*(Aq, \*(Aq/test/\*(Aq);
\& my $string = $node\->as_string;
.Ve
.PP
\&\f(CW$string\fR is now:
.PP
.Vb 2
\& SetHandler perl\-script
\& PerlHandler Test::Module
.Ve
.ie n .SS """conftree"""
.el .SS "\f(CWconftree\fP"
.IX Subsection "conftree"
Get the root of the configuration tree:
.PP
.Vb 1
\& $conftree = Apache2::Directive::conftree();
.Ve
.ie n .IP "obj: ""Apache2::Directive"" ( class name )" 4
.el .IP "obj: \f(CWApache2::Directive\fR ( class name )" 4
.IX Item "obj: Apache2::Directive ( class name )"
.PD 0
.ie n .IP "ret: $conftree ( ""Apache2::Directive object"" )" 4
.el .IP "ret: \f(CW$conftree\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "ret: $conftree ( Apache2::Directive object )"
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.ie n .SS """directive"""
.el .SS "\f(CWdirective\fP"
.IX Subsection "directive"
Get the name of the directive in \f(CW$node\fR:
.PP
.Vb 1
\& $name = $node\->directive();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: $name ( string )" 4
.el .IP "ret: \f(CW$name\fR ( string )" 4
.IX Item "ret: $name ( string )"
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.ie n .SS """filename"""
.el .SS "\f(CWfilename\fP"
.IX Subsection "filename"
Get the \fIfilename\fR the configuration node was created from:
.PP
.Vb 1
\& $filename = $node\->filename();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: $filename ( string )" 4
.el .IP "ret: \f(CW$filename\fR ( string )" 4
.IX Item "ret: $filename ( string )"
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.PP
For example:
.PP
.Vb 3
\& my $tree = Apache2::Directive::conftree();
\& my $node = $tree\->lookup(\*(AqVirtualHost\*(Aq, \*(Aqexample.com\*(Aq);
\& my $filename = $node\->filename;
.Ve
.PP
\&\f(CW$filename\fR is now the full path to the \fIhttpd.conf\fR that
VirtualHost was defined in.
.PP
If the directive was added with
\&\f(CW\*(C`add_config()\*(C'\fR,
the filename will be the path to the \fIhttpd.conf\fR that trigerred
that Perl code.
.ie n .SS """first_child"""
.el .SS "\f(CWfirst_child\fP"
.IX Subsection "first_child"
Get the first child node of this directive:
.PP
.Vb 1
\& $child_node = $node\->first_child;
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: $child_node ( ""Apache2::Directive object"" )" 4
.el .IP "ret: \f(CW$child_node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "ret: $child_node ( Apache2::Directive object )"
.PD
Returns the first child node of \f(CW$node\fR, \f(CW\*(C`undef\*(C'\fR if there is none
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.ie n .SS """line_num"""
.el .SS "\f(CWline_num\fP"
.IX Subsection "line_num"
Get the line number in a \fIfilename\fR this node was created at:
.PP
.Vb 1
\& $lineno = $node\->line_num();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "arg1: $lineno (integer)" 4
.el .IP "arg1: \f(CW$lineno\fR (integer)" 4
.IX Item "arg1: $lineno (integer)"
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.PD
.ie n .SS """lookup"""
.el .SS "\f(CWlookup\fP"
.IX Subsection "lookup"
Get the node(s) matching a certain value.
.PP
.Vb 2
\& $node = $conftree\->lookup($directive, $args);
\& @nodes = $conftree\->lookup($directive, $args);
.Ve
.ie n .IP "obj: $conftree ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$conftree\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $conftree ( Apache2::Directive object )"
The config tree to stringify
.ie n .IP "arg1: $directive ( string )" 4
.el .IP "arg1: \f(CW$directive\fR ( string )" 4
.IX Item "arg1: $directive ( string )"
The name of the directive to search for
.ie n .IP "opt arg2: ""args"" ( string )" 4
.el .IP "opt arg2: \f(CWargs\fR ( string )" 4
.IX Item "opt arg2: args ( string )"
Optional args to the directive to filter for
.ie n .IP "ret: $string ( string / \s-1ARRAY\s0 of \s-1HASH\s0 refs )" 4
.el .IP "ret: \f(CW$string\fR ( string / \s-1ARRAY\s0 of \s-1HASH\s0 refs )" 4
.IX Item "ret: $string ( string / ARRAY of HASH refs )"
In \s-1LIST\s0 context, it returns all matching nodes.
.Sp
In \s-1SCALAR\s0 context, it returns only the first matching node.
.Sp
If called with only \f(CW$directive\fR value, this method returns all nodes
from that directive. For example:
.Sp
.Vb 1
\& @Alias = $conftree\->lookup(\*(AqAlias\*(Aq);
.Ve
.Sp
returns all nodes for \f(CW\*(C`Alias\*(C'\fR directives.
.Sp
If called with an extra \f(CW$args\fR argument, it returns only nodes where
both the directive and the args matched. For example:
.Sp
.Vb 1
\& $VHost = $tree\->lookup(\*(AqVirtualHost\*(Aq, \*(Aq_default_:8000\*(Aq);
.Ve
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.ie n .SS """next"""
.el .SS "\f(CWnext\fP"
.IX Subsection "next"
Get the next directive node in the tree:
.PP
.Vb 1
\& $next_node = $node\->next();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: $next_node ( ""Apache2::Directive object"" )" 4
.el .IP "ret: \f(CW$next_node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "ret: $next_node ( Apache2::Directive object )"
.PD
Returns the next sibling of \f(CW$node\fR, \f(CW\*(C`undef\*(C'\fR if there is none
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.ie n .SS """parent"""
.el .SS "\f(CWparent\fP"
.IX Subsection "parent"
Get the parent node of this directive:
.PP
.Vb 1
\& $parent_node = $node\->parent();
.Ve
.ie n .IP "obj: $node ( ""Apache2::Directive object"" )" 4
.el .IP "obj: \f(CW$node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "obj: $node ( Apache2::Directive object )"
.PD 0
.ie n .IP "ret: ""parent_node"" ( ""Apache2::Directive object"" )" 4
.el .IP "ret: \f(CWparent_node\fR ( \f(CWApache2::Directive object\fR )" 4
.IX Item "ret: parent_node ( Apache2::Directive object )"
.PD
Returns the parent of \f(CW$node\fR, \f(CW\*(C`undef\*(C'\fR if this node is the root node
.IP "since: 2.0.00" 4
.IX Item "since: 2.0.00"
.SH "See Also"
.IX Header "See Also"
mod_perl 2.0 documentation.
.SH "Copyright"
.IX Header "Copyright"
mod_perl 2.0 and its core modules are copyrighted under
The Apache Software License, Version 2.0.
.SH "Authors"
.IX Header "Authors"
The mod_perl development team and numerous
contributors.
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