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#____________________________________________________________________ |
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# File: Architecture.pm |
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#____________________________________________________________________ |
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# |
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# Author: Shaun Ashby <Shaun.Ashby@cern.ch> |
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# Update: 2003-10-23 17:20:41+0200 |
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# Revision: $Id$ |
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# |
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# Provide machine/architecture information services |
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# simply set the architecture variable based on uname |
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# Copyright: 2003 (C) Shaun Ashby |
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# |
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# --------- |
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# Interface |
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# --------- |
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# new() : new object - will autoinitialise to architecture |
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# getarch() : return the current (assumed) architecture |
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# archfile($filename,$base) : Will check various relevant architecture specific |
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# dirs in search for an architecture specific $file |
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# starting from base |
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|
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#-------------------------------------------------------------------- |
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package Architecture; |
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require 5.001; |
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require 5.004; |
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use Exporter; |
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|
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@ISA=qw(Exporter); |
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@EXPORT_OK=qw( ); |
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|
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sub new() |
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{ |
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############################################################### |
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# new() # |
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############################################################### |
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# modified : Thu Oct 23 17:21:05 2003 / SFA # |
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# params : # |
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# : # |
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# function : # |
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# : # |
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############################################################### |
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my $proto=shift; |
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my $class=ref($proto) || $proto; |
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my $self={}; |
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|
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bless $self,$class; |
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|
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$self->_initarch(); |
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|
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return $self; |
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} |
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|
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sub arch() |
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{ |
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my $self=shift; |
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|
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@_ ? $self->{arch} = shift |
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: $self->{arch}; |
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} |
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|
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# A subroutine to determine the architecture. This |
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# is done by parsing the architecture map contained as |
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# data inside SCRAM_SITE.pm and looking for an appropriate |
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# match for our platform: |
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sub _initarch() |
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{ |
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my $self=shift; |
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$self->parse_architecture_map(); |
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return $self; |
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} |
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|
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# Parse the map data: |
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sub parse_architecture_map() |
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{ |
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my $self=shift; |
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my $matches={}; |
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|
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require Installation::SCRAM_SITE; |
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my $architectures = &Installation::SCRAM_SITE::read_architecture_map(); |
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|
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while (my ($archstring,$archtest) = each %{$architectures}) |
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{ |
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my $rval = eval join(" ",@$archtest); |
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|
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if ($rval) |
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{ |
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# Store the matched string: |
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$matches->{$archstring}=1; |
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|
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if ((my $nkeys = keys %{$matches}) > 1) |
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{ |
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print "\n"; |
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print "SCRAM: WARNING: more than one architecture definition in ","\n"; |
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print " SCRAM_SITE matches current platform!","\n"; |
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print "Unable to set the architecture correctly!","\n"; |
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print "\n"; |
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exit(1); |
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} |
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# Store the match (only the *first* match in the case |
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# of multiple matches): |
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$self->arch($archstring); |
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} |
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else |
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{ |
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next; |
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} |
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} |
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} |
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|
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sub new { |
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my $class=shift; |
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$self={}; |
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bless $self, $class; |
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$self->_initarch(); |
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return $self; |
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} |
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|
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sub getarch { |
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my $self=shift; |
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return $self->{arch}; |
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} |
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|
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sub archfile { |
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my $self=shift; |
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my $filename=shift; |
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my $base=shift; |
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|
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my $archdir; |
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|
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foreach $dir ( @{$self->{archdirs}} ) { |
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$archdir=$base."/".$dir."/".$filename; |
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if ( -f $archdir ) { |
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return $self->{archdir}; |
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} |
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} |
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} |
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|
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# ------------ Support Routines --------------------------------- |
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|
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sub _initarch { |
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my $self=shift; |
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|
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$self->{realarch}=$; |
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# Seperate Variables means we can pretend to be other architectures |
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$self->{arch}=$self->{realarch}; |
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|
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# get the hostname |
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use Sys::Hostname; |
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$self->{host}=hostname(); |
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|
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# Architecture directory search path |
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@{$self->{archdirs}}=( $self->{arch}."/".$self->{host}, "$self->{arch}" ); |
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} |
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1; |
