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<TITLE>XML::PPD - PPD file format and XML parsing elements</TITLE>
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<STRONG><P CLASS=block> XML::PPD - PPD file format and XML parsing elements</P></STRONG>
</TD></TR>
</TABLE>
<A NAME="__index__"></A>
<!-- INDEX BEGIN -->
<UL>
<LI><A HREF="#name">NAME</A></LI><LI><A HREF="#supportedplatforms">SUPPORTED PLATFORMS</A></LI>
<LI><A HREF="#synopsis">SYNOPSIS</A></LI>
<LI><A HREF="#description">DESCRIPTION</A></LI>
<LI><A HREF="#major elements">MAJOR ELEMENTS</A></LI>
<UL>
<LI><A HREF="#softpkg">SOFTPKG</A></LI>
<LI><A HREF="#implementation">IMPLEMENTATION</A></LI>
<LI><A HREF="#dependency">DEPENDENCY</A></LI>
</UL>
<LI><A HREF="#minor elements">MINOR ELEMENTS</A></LI>
<UL>
<LI><A HREF="#title">TITLE</A></LI>
<LI><A HREF="#abstract">ABSTRACT</A></LI>
<LI><A HREF="#author">AUTHOR</A></LI>
<LI><A HREF="#language">LANGUAGE</A></LI>
<LI><A HREF="#license">LICENSE</A></LI>
<LI><A HREF="#os">OS</A></LI>
<LI><A HREF="#osversion">OSVERSION</A></LI>
<LI><A HREF="#perlcore">PERLCORE</A></LI>
<LI><A HREF="#processor">PROCESSOR</A></LI>
<LI><A HREF="#codebase">CODEBASE</A></LI>
<LI><A HREF="#install">INSTALL</A></LI>
<LI><A HREF="#uninstall">UNINSTALL</A></LI>
</UL>
<LI><A HREF="#document type definition">DOCUMENT TYPE DEFINITION</A></LI>
<LI><A HREF="#sample ppd file">SAMPLE PPD FILE</A></LI>
<LI><A HREF="#known bugs/issues">KNOWN BUGS/ISSUES</A></LI>
<LI><A HREF="#authors">AUTHORS</A></LI>
<LI><A HREF="#history">HISTORY</A></LI>
<LI><A HREF="#see also">SEE ALSO</A></LI>
</UL>
<!-- INDEX END -->
<HR>
<P>
<H1><A NAME="name">NAME</A></H1>
<P>XML::PPD - PPD file format and XML parsing elements</P>
<P>
<HR>
<H1><A NAME="supportedplatforms">SUPPORTED PLATFORMS</A></H1>
<UL>
<LI>Linux</LI>
<LI>Solaris</LI>
<LI>Windows</LI>
</UL>
<HR>
<H1><A NAME="synopsis">SYNOPSIS</A></H1>
<PRE>
use XML::Parser;
use XML::PPD;</PRE>
<PRE>
$p = new XML::Parser( Style => 'Objects', Pkg => 'XML::PPD' );
...</PRE>
<P>
<HR>
<H1><A NAME="description">DESCRIPTION</A></H1>
<P>This module provides a set of classes for parsing PPD files using the
<CODE>XML::Parser</CODE> module. Each of the classes is derived from
<CODE>XML::ValidatingElement</CODE>, with optional/required attributes/children
enforced.</P>
<P>
<HR>
<H1><A NAME="major elements">MAJOR ELEMENTS</A></H1>
<P>
<H2><A NAME="softpkg">SOFTPKG</A></H2>
<P>Defines a Perl Package. The root of a PPD document is <STRONG>always</STRONG> a SOFTPKG
element. The SOFTPKG element allows for the following attributes:</P>
<DL>
<DT><STRONG><A NAME="item_NAME">NAME</A></STRONG><BR>
<DD>
Required attribute. Name of the package (e.g. ``Foobar'').
<P></P>
<DT><STRONG><A NAME="item_VERSION">VERSION</A></STRONG><BR>
<DD>
Version number of the package, in comma-delimited format (e.g. ``1,0,0,0'').
<P></P></DL>
<P>
<H2><A NAME="implementation">IMPLEMENTATION</A></H2>
<P>Child of SOFTPKG, used to describe a particular implementation of the Perl
Package. Multiple instances are valid, and should be used to describe
different implementations/ports for different operating systems or
architectures.</P>
<P>
<H2><A NAME="dependency">DEPENDENCY</A></H2>
<P>Child of SOFTPKG or IMPLEMENTATION, used to indicate a dependency this Perl
Package has on another Perl Package. Multiple instances are valid. The
DEPENDENCY element allows for the following attributes:</P>
<DL>
<DT><STRONG>NAME</STRONG><BR>
<DD>
Name of the package that this implementation is dependant upon.
<P></P>
<DT><STRONG>VERSION</STRONG><BR>
<DD>
Version number of the dependency, in comma-delimited format (e.g. ``1,0,0,0'').
<P></P></DL>
<P>
<HR>
<H1><A NAME="minor elements">MINOR ELEMENTS</A></H1>
<P>
<H2><A NAME="title">TITLE</A></H2>
<P>Child of SOFTPKG, used to state the title of the Perl Package. Only one
instance should be present.</P>
<P>
<H2><A NAME="abstract">ABSTRACT</A></H2>
<P>Child of SOFTPKG, used to provide a short description outlining the nature and
purpose of the Perl Package. Only one instance should be present.</P>
<P>
<H2><A NAME="author">AUTHOR</A></H2>
<P>Child of SOFTPKG, used to provide information about the <CODE>author(s)</CODE> of the Perl
Package. Multiple instances are valid.</P>
<P>
<H2><A NAME="language">LANGUAGE</A></H2>
<P>Child of IMPLEMENTATION, used to specify the language used within the given
implementation of the Perl Package. Only one instance should be present.</P>
<P>
<H2><A NAME="license">LICENSE</A></H2>
<P>Child of SOFTPKG, indicating the location of the appropriate license agreement
or copyright notice for the Perl Package. Only one instance should be
present. The LICENSE element allows for the following attributes:</P>
<DL>
<DT><STRONG><A NAME="item_HREF">HREF</A></STRONG><BR>
<DD>
Required attribute. A reference to the location of the license agreement or
copyright notice for this package.
<P></P></DL>
<P>
<H2><A NAME="os">OS</A></H2>
<P>Child of IMPLEMENTATION, used to outline the operating system required for this
implementation of the Perl Package. Multiple instances are valid. Valid
values can be taken from the OSD Specification and it's OS element. The OS
element allows for the following attributes:</P>
<DL>
<DT><STRONG><A NAME="item_VALUE">VALUE</A></STRONG><BR>
<DD>
The name of the operating system required for this implementation of the Perl
Package. This value should be obtained from Config.pm as 'osname'.
<P></P></DL>
<P>Note that previous versions of the PPD format used a 'NAME' attribute. It's
use has been deprecated in preference of the 'VALUE' attribute. Also note that
during validation, this element will automatically convert any existing 'NAME'
attribute to be a 'VALUE' attribute.</P>
<P>
<H2><A NAME="osversion">OSVERSION</A></H2>
<P>Child of IMPLEMENTATION, used to outline the required version of the operating
system required for this implementation of the Perl Package. Only one instance
should be present. The OSVERSION element allows for the following attributes:</P>
<DL>
<DT><STRONG>VALUE</STRONG><BR>
<DD>
The version of the operating system required for installation of this
implementation of the package, in a comma-delimited format (e.g. ``3,1,0,0'').
<P></P></DL>
<P>Note that previous versions of the PPD format used a 'NAME' attribute. It's
use has been deprecated in preference of the 'VALUE' attribute. Also note that
during validation, this element will automatically convert any existing 'NAME'
attribute to be a 'VALUE' attribute.</P>
<P>
<H2><A NAME="perlcore">PERLCORE</A></H2>
<P>Child of IMPLEMENTATION, used to specify the minimum version of the Perl core
distribution that this Perl Package is to be used with. Only one instance
should be present. The PERLCORE element allows for the following attributes:</P>
<DL>
<DT><STRONG>VERSION</STRONG><BR>
<DD>
Version of the Perl core that is required for this implementation of the Perl
Package.
<P></P></DL>
<P>
<H2><A NAME="processor">PROCESSOR</A></H2>
<P>Child of IMPLEMENTATION, outlining the cpu required for this implementation
of the Perl Package. Only one instance should be present. The PROCESSOR
element allows for the following attributes:</P>
<DL>
<DT><STRONG>VALUE</STRONG><BR>
<DD>
CPU required for the installation of this implementation of the Perl Package.
The following values are all valid according to the OSD Specification:
<PRE>
x86 alpha mips sparc 680x0</PRE>
<P></P></DL>
<P>Note that previous versions of the PPD format used a 'NAME' attribute. It's
use has been deprecated in preference of the 'VALUE' attribute. Also note that
during validation, this element will automatically convert any existing 'NAME'
attribute to be a 'VALUE' attribute.</P>
<P>
<H2><A NAME="codebase">CODEBASE</A></H2>
<P>Child of IMPLEMENTATION, indicating a location where an archive of the Perl
Package can be retrieved. Multiple instances are valid, and can be used to
indicate multiple possible locations where the same version of the Perl Package
can be retrieved. The CODEBASE element allows for the following attributes:</P>
<DL>
<DT><STRONG><A NAME="item_FILENAME">FILENAME</A></STRONG><BR>
<DD>
???
<P></P>
<DT><STRONG>HREF</STRONG><BR>
<DD>
Required attribute. A reference to the location of the Perl Package
distribution.
<P></P></DL>
<P>
<H2><A NAME="install">INSTALL</A></H2>
<P>Child of IMPLEMENTATION, used to provide either a reference to an
installation script or a series of commands which can be used to install
the Perl Package once it has been retrieved. If the EXEC attribute is not
specified, the value is assumed to be one or more commands, separated by
`;;'. Each such command will be executed by the Perl `system()' function.
Only one instance should be present. The INSTALL element allows for
the following attributes:</P>
<DL>
<DT><STRONG>HREF</STRONG><BR>
<DD>
Reference to an external script which should be retrieved and run as part
of the installation process. Both filenames and URLs should be considered
valid.
<P></P>
<DT><STRONG><A NAME="item_EXEC">EXEC</A></STRONG><BR>
<DD>
Name of interpreter/shell used to execute the installation script.
If the value of EXEC is `PPM_PERL', the copy of Perl that is executing
PPM itself ($^X) is used to execute the install script.
<P></P></DL>
<P>
<H2><A NAME="uninstall">UNINSTALL</A></H2>
<P>Child of IMPLEMENTATION, used to provide either a reference to an
uninstallation script or a raw Perl script which can be used to uninstall the
Perl Package at a later point. Only one instance should be present. The
UNINSTALL element allows for the following attributs:</P>
<DL>
<DT><STRONG>HREF</STRONG><BR>
<DD>
Reference to an external script which should be retrieved and run as part of
the removal process. Both filenames and URLs should be considered valid.
<P></P>
<DT><STRONG>EXEC</STRONG><BR>
<DD>
Name of interpreter/shell used to execute the uninstallation script.
If the value of EXEC is `PPM_PERL', the copy of Perl that is executing
PPM itself ($^X) is used to execute the install script.
<P></P></DL>
<P>
<HR>
<H1><A NAME="document type definition">DOCUMENT TYPE DEFINITION</A></H1>
<P>The DTD for PPD documents is available from the ActiveState website and the
latest version can be found at <A HREF="http://www.ActiveState.com/PPM/DTD/ppd.dtd">http://www.ActiveState.com/PPM/DTD/ppd.dtd</A></P>
<P>This revision of the <CODE>XML::PPD</CODE> module implements the following DTD:</P>
<PRE>
<!ELEMENT SOFTPKG (ABSTRACT | AUTHOR | IMPLEMENTATION | LICENSE | TITLE)*>
<!ATTLIST SOFTPKG NAME CDATA #REQUIRED
VERSION CDATA #IMPLIED></PRE>
<PRE>
<!ELEMENT TITLE (#PCDATA)></PRE>
<PRE>
<!ELEMENT ABSTRACT (#PCDATA)></PRE>
<PRE>
<!ELEMENT AUTHOR (#PCDATA)></PRE>
<PRE>
<!ELEMENT LICENSE EMPTY>
<!ATTLIST LICENSE HREF CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT IMPLEMENTATION (CODEBASE | DEPENDENCY | LANGUAGE | OS |
OSVERSION | PERLCORE | PROCESSOR | INSTALL |
UNINSTALL) *></PRE>
<PRE>
<!ELEMENT CODEBASE EMPTY>
<!ATTLIST CODEBASE FILENAME CDATA #IMPLIED
HREF CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT DEPENDENCY EMPTY>
<!ATTLIST DEPENDENCY VERSION CDATA #IMPLIED
NAME CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT LANGUAGE EMPTY>
<!ATTLIST LANGUAGE VALUE CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT OS EMPTY>
<!ATTLIST OS VALUE CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT OSVERSION EMPTY>
<!ATTLIST OSVERSION VALUE CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT PERLCORE EMPTY>
<!ATTLIST PERLCORE VERSION CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT PROCESSOR EMPTY>
<!ATTLIST PROCESSOR VALUE CDATA #REQUIRED></PRE>
<PRE>
<!ELEMENT INSTALL (#PCDATA)>
<!ATTLIST INSTALL HREF CDATA #IMPLIED
EXEC CDATA #IMPLIED></PRE>
<PRE>
<!ELEMENT UNINSTALL (#PCDATA)>
<!ATTLIST UNINSTALL HREF CDATA #IMPLIED
EXEC CDATA #IMPLIED></PRE>
<P>
<HR>
<H1><A NAME="sample ppd file">SAMPLE PPD FILE</A></H1>
<P>The following is a sample PPD file describing the <CODE>Math-MatrixBool</CODE> module.
Note that this may <STRONG>not</STRONG> be a current/proper description of this module and is
for sample purposes only.</P>
<PRE>
<SOFTPKG NAME="Math-MatrixBool" VERSION="4,2,0,0">
<TITLE>Math-MatrixBool</TITLE>
<ABSTRACT>Easy manipulation of matrices of booleans (Boolean Algebra)</ABSTRACT>
<AUTHOR>Steffen Beyer (sb@sdm.de)</AUTHOR>
<LICENSE HREF="<A HREF="http://www.ActiveState.com/packages/Math-MatrixBool/license.html"">http://www.ActiveState.com/packages/Math-MatrixBool/license.html"</A>; />
<IMPLEMENTATION>
<OS VALUE="WinNT" />
<OS VALUE="Win95" />
<PROCESSOR VALUE="x86" />
<CODEBASE HREF="<A HREF="http://www.ActiveState.com/packages/Math-MatrixBool/Math-MatrixBool-4.2-bin-1-Win32.tar.gz"">http://www.ActiveState.com/packages/Math-MatrixBool/Math-MatrixBool-4.2-bin-1-Win32.tar.gz"</A>; />
<DEPENDENCY NAME="Bit-Vector" />
<INSTALL>
</INSTALL>
<UNINSTALL>
</UNINSTALL>
</IMPLEMENTATION></PRE>
<PRE>
<IMPLEMENTATION>
<DEPENDENCY NAME="Bit-Vector" />
<CODEBASE HREF="&CPAN;/CPAN/modules/by-module/Math/Math-MatrixBool-4.2.tar.gz" />
<INSTALL>
system("make"); ;;
system("make test"); ;;
system("make install"); ;;
</INSTALL>
</IMPLEMENTATION>
</SOFTPKG></PRE>
<P>
<HR>
<H1><A NAME="known bugs/issues">KNOWN BUGS/ISSUES</A></H1>
<P>Elements which are required to be empty (e.g. LICENSE) are not enforced as
such.</P>
<P>Notations above about elements for which ``only one instance'' or ``multiple
instances'' are valid are not enforced; this primarily a guideline for
generating your own PPD files.</P>
<P>
<HR>
<H1><A NAME="authors">AUTHORS</A></H1>
<P>Graham TerMarsch <<A HREF="mailto:grahamt@activestate.com">grahamt@activestate.com</A>></P>
<P>Murray Nesbitt <<A HREF="mailto:murrayn@activestate.com">murrayn@activestate.com</A>></P>
<P>Dick Hardt <<A HREF="mailto:dick_hardt@activestate.com">dick_hardt@activestate.com</A>></P>
<P>
<HR>
<H1><A NAME="history">HISTORY</A></H1>
<P>v0.1 - Initial release</P>
<P>
<HR>
<H1><A NAME="see also">SEE ALSO</A></H1>
<P><A HREF="../../../site/lib/XML/ValidatingElement.html">the XML::ValidatingElement manpage</A>,
<A HREF="../../../site/lib/XML/Element.html">the XML::Element manpage</A>,
<A HREF="../../../site/lib/XML/Parser.html">the XML::Parser manpage</A>,
OSD Specification (http://www.microsoft.com/standards/osd/)</P>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH=100%>
<TR><TD CLASS=block VALIGN=MIDDLE WIDTH=100% BGCOLOR="#cccccc">
<STRONG><P CLASS=block> XML::PPD - PPD file format and XML parsing elements</P></STRONG>
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