NAME
XML::PPMConfig - PPMConfig file format and XML parsing elements
SYNOPSIS
use XML::Parser;
use XML::PPMConfig;
$p = new XML::Parser( Style => 'Objects', Pkg => 'XML::PPMConfig' );
...DESCRIPTION
This module provides a set of classes for parsing PPM configuration files using the XML::Parser module. All of the elements unique to a PPM configuration file are derived from XML::ValidatingElement. There are also several classes rebuilt here which are derived from elements in XML::PPD as we can include a PPD file within our own INSTPPD element.
MAJOR ELEMENTS
PPMCONFIG
Defines a PPM configuration file. The root of a PPMConfig document is always a PPMCONFIG element.
PACKAGE
Child of PPMCONFIG, used to describe a Perl Package which has already been installed. Multiple instances are valid. The PACKAGE element allows for the following attributes:
- NAME
-
Name of the package as given in it's PPD
MINOR ELEMENTS
PPMVER
Child of PPMCONFIG, used to state the version of PPM for which this configuration file is valid. A single instance should be present.
PLATFORM
Child of PPMCONFIG, used to specify the platform of the target machine. A single instance should be present. The PLATFORM element allows for the following attributes:
- OSVALUE
-
Description of the local operating system as defined in the Config.pm file under 'osname'.
- OSVERSION
-
Version of the local operating system.
- CPU
-
Description of the CPU in the local system. The following list of possible values was taken from the OSD Specification:
x86 mips alpha ppc sparc 680x0 - LANGUAGE
-
Description of the language used on the local system as specified by the language codes in ISO 639.
REPOSITORY
Child of PPMCONFIG, used to specify a repository where Perl Packages can be found. Multiple instances are valid. The REPOSITORY element allows for the following attributes:
- NAME
-
Name by which the repository will be known (e.g. "ActiveState").
- LOCATION
-
An URL or directory where the repository can be found.
- USERNAME
-
Optional username for a repository requiring authenticated connection.
- PASSWORD
-
Optional password for a repository requiring authenticated connection.
- SUMMARYFILE
-
Optional package summary filename.
If this file exists on the repository, its contents can be retrieved using PPM::RepositorySummary(). The contents are not strictly enforced by PPM.pm, however ppm.pl expects this to be a file with the following format (for display with the 'summary' command):
Agent [2.91]: supplies agentspace methods for perl5. Apache-OutputChain [0.06]: chain stacked Perl handlers [etc.]
OPTIONS
Child of PPMCONFIG, used to specify the current configuration options for PPM. A single instance should be present. The OPTIONS element allows for the following attributes:
- IGNORECASE
-
Sets case-sensitive searching. Can be either '1' or '0'.
- CLEAN
-
Sets removal of temporarily files. Can be either '1' or '0'.
- CONFIRM
-
Sets confirmation of all installs/removals/upgrades. Can be either '1' or '0'.
- BUILDDIR
-
Directory in which packages will be unpacked before their installation.
- ROOT
-
Directory under which packages should be installed on the local system.
- TRACE
-
Level of tracing (0 is no tracing, 4 is max tracing).
- TRACEFILE
-
File to which trace information will be written.
- VERBOSE
-
Controls whether query and search results are verbose (1 == verbose, 0 == no).
PPMPRECIOUS
Child of PPMCONFIG, used to specify the modules which PPM itself is dependant upon. A single instance should be present.
LOCATION
Child of PACKAGE, used to specify locations at which to search for updated versions of the PPD file for this package. Its value can be either a directory or an Internet address. A single instance should be present.
INSTDATE
Child of PACKAGE, used to specify the date on which the Perl Package was installed. A single instance should be present.
INSTROOT
Child of PACKAGE, used to specify the root directory that the Perl Package was installed into. A single instance should be present.
INSTPACKLIST
Child of PACKAGE, used to specify a reference to the packlist for this Perl Package; a file containing a list of all of the files which were installed. A single instance should be present.
INSTPPD
Child of PACKAGE, used to hold a copy of the PPD from which Perl Packages were installed. Multiple instances are valid.
DOCUMENT TYPE DEFINITION
The DTD for PPMConfig documents is available from the ActiveState website and the latest version can be found at: http://www.ActiveState.com/PPM/DTD/ppmconfig.dtd
This revision of the XML::PPMConfig module implements the following DTD:
<!ELEMENT PPMCONFIG (PPMVER | PLATFORM | REPOSITORY | OPTIONS |
PPMPRECIOUS | PACKAGE)*>
<!ELEMENT PPMVER (#PCDATA)>
<!ELEMENT PLATFORM EMPTY>
<!ATTLIST PLATFORM OSVALUE CDATA #REQUIRED
OSVERSION CDATA #REQUIRED
CPU CDATA #REQUIRED
LANGUAGE CDATA #IMPLIED>
<!ELEMENT REPOSITORY EMPTY>
<!ATTLIST REPOSITORY NAME CDATA #REQUIRED
LOCATION CDATA #REQUIRED
USERNAME CDATA #IMPLIED
PASSWORD CDATA #IMPLIED
SUMMARYFILE CDATA #IMPLIED>
<!ELEMENT OPTIONS EMPTY>
<!ATTLIST OPTIONS IGNORECASE CDATA #REQUIRED
CLEAN CDATA #REQUIRED
CONFIRM CDATA #REQUIRED
FORCEINSTALL CDATA #REQUIRED
ROOT CDATA #REQUIRED
BUILDDIR CDATA #REQUIRED
MORE CDATA #REQUIRED
TRACE CDATA #IMPLIED
TRACEFILE CDATA #IMPLIED>
<!ELEMENT PPMPRECIOUS (#PCDATA)>
<!ELEMENT PACKAGE (LOCATION | INSTDATE | INSTROOT | INSTPACKLIST |
INSTPPD)*>
<!ATTLIST PACKAGE NAME CDATA #REQUIRED>
<!ELEMENT LOCATION (#PCDATA)>
<!ELEMENT INSTDATE (#PCDATA)>
<!ELEMENT INSTROOT (#PCDATA)>
<!ELEMENT INSTPACKLIST (#PCDATA)>
<!ELEMENT INSTPPD (#PCDATA)>SAMPLE PPMConfig FILE
The following is a sample PPMConfig file. Note that this may not be a current description of this module and is for sample purposes only.
<PPMCONFIG>
<PPMVER>1,0,0,0</PPMVER>
<PLATFORM CPU="x86" OSVALUE="MSWin32" OSVERSION="4,0,0,0" />
<OPTIONS BUILDDIR="/tmp" CLEAN="1" CONFIRM="1" FORCEINSTALL="1"
IGNORECASE="0" MORE="0" ROOT="/usr/local" TRACE="0" TRACEFILE="" />
<REPOSITORY LOCATION="http://www.ActiveState.com/packages"
NAME="ActiveState Package Repository" SUMMARYFILE="package.lst" />
<PPMPRECIOUS>PPM;libnet;Archive-Tar;Compress-Zlib;libwww-perl</PPMPRECIOUS>
<PACKAGE NAME="AtExit">
<LOCATION>g:/packages</LOCATION>
<INSTPACKLIST>c:/perllib/lib/site/MSWin32-x86/auto/AtExit/.packlist</INSTPACKLIST>
<INSTROOT>c:/perllib</INSTROOT>
<INSTDATE>Sun Mar 8 02:56:31 1998</INSTDATE>
<INSTPPD>
<SOFTPKG NAME="AtExit" VERSION="1,02,0,0">
<TITLE>AtExit</TITLE>
<ABSTRACT>Register a subroutine to be invoked at program -exit time.</ABSTRACT>
<AUTHOR>Brad Appleton (Brad_Appleton-GBDA001@email.mot.com)</AUTHOR>
<IMPLEMENTATION>
<CODEBASE HREF="x86/AtExit.tar.gz" />
</IMPLEMENTATION>
</SOFTPKG>
</INSTPPD>
</PACKAGE>
</PPMCONFIG>KNOWN BUGS/ISSUES
Elements which are required to be empty (e.g. REPOSITORY) are not enforced as such.
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.
Currently, this module creates new classes within it's own namespace for all of the PPD elements which can be contained within the INSTPPD element. A suitable method for importing the entire XML::PPD:: namespace should be found in order to make this cleaner.
AUTHORS
Graham TerMarsch <grahamt@ActiveState.com>
Murray Nesbitt <murrayn@ActiveState.com>
Dick Hardt <dick_hardt@ActiveState.com>
HISTORY
v0.1 - Initial release