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#____________________________________________________________________
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# File: RuntimeFile.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: 2004-05-19 15:40:10+0200
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# Revision: $Id: RuntimeFile.pm,v 1.1.2.2 2004/05/28 15:49:07 sashby Exp $
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#
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# Copyright: 2004 (C) Shaun Ashby
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#
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#--------------------------------------------------------------------
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package RuntimeFile;
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require 5.004;
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use ActiveDoc::SimpleDoc;
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use Exporter;
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@ISA=qw(Exporter);
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@EXPORT_OK=qw( );
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sub new()
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###############################################################
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# new() #
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###############################################################
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# modified : Wed May 19 15:40:33 2004 / 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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{
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my $proto=shift;
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my $class=ref($proto) || $proto;
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my $self={};
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$self->{runtimefile} = shift;
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$self->{content} = {};
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$self->{varstore} = {};
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$self->{thisrtinfo} = [];
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bless $self,$class;
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return $self;
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}
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sub read()
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{
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my $self=shift;
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use Cwd;
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# Check to see that the rt file exists:
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if ( ! -f cwd()."/".$self->{runtimefile} )
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{
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$::scram->scramfatal("Runtime file \"".$self->{runtimefile}."\" does not exist or is not readable!.");
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}
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else
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{
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print "Reading RT environment from file ",$self->{runtimefile},"\n", if ($ENV{SCRAM_DEBUG});
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}
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# A new SimpleDoc object to parse the file:
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$self->{simpledoc} = ActiveDoc::SimpleDoc->new();
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$self->{simpledoc}->newparse("RUNTIME");
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$self->{simpledoc}->filetoparse($self->{runtimefile});
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$self->{simpledoc}->addtag("RUNTIME","Runtime",
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\&runtimetagOpen, $self,
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\&runtimetagInfo, $self,
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\&runtimetagClose, $self);
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# Parse the file:
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$self->{simpledoc}->parse("RUNTIME");
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delete $self->{simpledoc};
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}
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sub content()
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{
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my $self = shift;
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return $self->{content};
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}
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sub info()
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{
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my $self=shift;
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my ($rtname) = @_;
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if (exists ($self->{content}->{$rtname}))
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{
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if (exists ($self->{content}->{$rtname}->{'info'}))
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{
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print $rtname,":\n";
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foreach my $iline (@{$self->{content}->{$rtname}->{'info'}})
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{
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print $iline,"\n";
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}
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}
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else
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{
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print "No description for runtime variable \"",$rtname,"\" in file ".$self->{runtimefile}."!\n";
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}
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}
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else
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{
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$::scram->scramerror("Runtime variable ".$rtname." is not defined in ".$self->{runtimefile}."!");
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exit(1);
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}
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}
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sub runtimetagOpen()
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{
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my ($self, $name, $hashref) = @_;
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$self->{simpledoc}->checktag($name, $hashref, "name");
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$self->{thisrtname} = $hashref->{'name'};
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# Check for values (as value or default):
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foreach my $t (qw(value)) # Only support "value"
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{
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if (exists ($hashref->{$t}))
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{
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# Try to expand the value:
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my $thisvalue = $self->_expandvars($self->{varstore},$hashref->{$t});
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# There were no dollar signs so we can assume
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# that everything was evaluated properly:
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if ($thisvalue !~ /\$/)
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{
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$self->{varstore}->{$hashref->{'name'}} = $thisvalue;
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$self->{content}->{$hashref->{'name'}} = { value => $thisvalue };
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}
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}
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}
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}
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sub runtimetagInfo()
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{
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my ($self, $name, @infotext) = @_;
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push(@{$self->{thisrtinfo}},@infotext);
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}
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sub runtimetagClose()
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{
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my ($self, $name, $hashref) = @_;
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$self->{content}->{$self->{thisrtname}}->{'info'} = $self->{thisrtinfo};
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delete $self->{thisrtname};
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$self->{thisrtinfo} = [];
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}
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sub _expandvars
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{
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my $self=shift;
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# $dataenvref is the store of tags already parsed (e.g., X_BASE, LIBDIR etc.):
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my ($dataenvref,$string) = @_;
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return "" , if ( ! defined $string );
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# To evaluate variables in brackets, like $(X):
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$string =~ s{\$\((\w+)\)}
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{
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if (defined $dataenvref->{$1})
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{
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$self->_expandvars($dataenvref, $dataenvref->{$1});
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}
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elsif (defined $ENV{$1})
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{
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$self->_expandvars($dataenvref, $ENV{$1});
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}
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else
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{
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"\$$1";
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}
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}egx;
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# To evaluate variables like $X:
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$string =~ s{\$(\w+)}
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{
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if (defined $dataenvref->{$1})
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{
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$self->_expandvars($dataenvref, $dataenvref->{$1});
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}
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elsif (defined $ENV{$1})
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{
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$self->_expandvars($dataenvref, $ENV{$1});
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}
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else
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{
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"\$$1";
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}
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}egx;
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# Now return false if the string wasn't properly evaluated (i.e. some $ remain), otherwise
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# return the expanded string:
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($string =~ /\$/) ? return undef : return $string;
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}
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1;
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