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|
#! /usr/bin/perl -w
#/*@@
# @file ConfigurationParser.pl
# @date Tue Feb 8 17:36:48 2000
# @author Tom Goodale
# @desc
# Parser for configuration.ccl files
# @enddesc
# @version $Header$
#@@*/
#/*@@
# @routine CreateConfigurationDatabase
# @date Tue Feb 8 17:47:26 2000
# @author Tom Goodale
# @desc
#
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub CreateConfigurationDatabase
{
my(%thorns) = @_;
my($thorn, @indata);
my(%configuration_data) = ();
my($filename);
# Loop through each thorn's interface file.
foreach $thorn (keys %thorns)
{
# Get the arrangement name for the thorn
$thorns{$thorn} =~ m:.*/arrangements/([^/]*)/[^/]*:;
$arrangement = $1;
$filename = "$thorns{$thorn}/configuration.ccl";
if(-r $filename)
{
print " $thorn\n";
# Read the data
@indata = &read_file($filename);
# Get the configuration data from it
&ParseConfigurationCCL($arrangement,$thorn, \%configuration_data, \@indata);
&PrintConfigurationStatistics($thorn, \%configuration_data);
}
}
return \%configuration_data;
}
#/*@@
# @routine ParseConfigurationCCL
# @date Tue Feb 8 19:23:18 2000
# @author Tom Goodale
# @desc
# Parses a configuration.ccl file and generates a database of the values
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub ParseConfigurationCCL
{
my($arrangement, $thorn, $rh_configuration_db, $ra_data) = @_;
my($line_number, $line);
my($provides, $script, $lang);
my($optional, $define);
# Initialise some stuff to prevent perl -w from complaining.
$rh_configuration_db->{"\U$thorn PROVIDES\E"} = "";
$rh_configuration_db->{"\U$thorn REQUIRES\E"} = "";
$rh_configuration_db->{"\U$thorn OPTIONAL\E"} = "";
$rh_configuration_db->{"\U$thorn OPTIONS\E"} = "";
for($line_number = 0; $line_number < @$ra_data; $line_number++)
{
$line = $ra_data->[$line_number];
# Parse the line
if($line =~ m/^\s*PROVIDES\s*/i)
{
($provides, $script, $lang, $line_number) = &ParseProvidesBlock($line_number, $ra_data);
$rh_configuration_db->{"\U$thorn PROVIDES\E"} .= "$provides";
$rh_configuration_db->{"\U$thorn PROVIDES $provides\E SCRIPT"} = "$script";
$rh_configuration_db->{"\U$thorn PROVIDES $provides\E LANG"} = "$lang";
next;
}
elsif($line =~ m/^\s*REQUIRES\s*(.*)/i)
{
$rh_configuration_db->{"\U$thorn REQUIRES\E"} .= "$1";
}
elsif($line =~ m/^\s*OPTIONAL\s*/i)
{
($optional, $define, $line_number) = &ParseOptionalBlock($line_number, $ra_data);
$rh_configuration_db->{"\U$thorn OPTIONAL\E"} .= "$provides";
$rh_configuration_db->{"\U$thorn OPTIONAL $optional\E DEFINE"} = "$define";
}
elsif($line =~ m/^\s*NO_SOURCE\s*/i)
{
$rh_configuration_db->{"\U$thorn OPTIONS\E"} .= "NO_SOURCE";
}
else
{
print STDERR "Error: Unrecognised line in configure.ccl '$line' \n";
$CST_errors++;
}
}
return;
}
#/*@@
# @routine ParseProvidesBlock
# @date Mon May 8 15:52:40 2000
# @author Tom Goodale
# @desc
# Parses the PROVIDES block in a configuration.ccl file.
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub ParseProvidesBlock
{
my ($line_number, $ra_data) = @_;
my ($provides, $script, $lang);
$provides = "";
$script = "";
$lang = "";
$ra_data->[$line_number] =~ m/^\s*PROVIDES\s*(.*)/i;
$provides = $1;
$line_number++;
if($ra_data->[$line_number] !~ m/^\s*\{\s*$/)
{
print STDERR "Error parsing provides block line '$ra_data->[$line_number]'\n";
print STDERR "Missing { at start of block\n";
$CST_errors++;
$line_number++ while($ra_data[$line_number] !~ m:\s*\}\s*:);
}
else
{
while($ra_data->[$line_number] !~ m:\s*\}\s*:)
{
$line_number++;
if($ra_data->[$line_number] =~ m/^\s*SCRIPT\s*(.*)$/i)
{
$script = $1;
next;
}
elsif($ra_data->[$line_number] =~ m/^\s*LANG[^\s]*\s*(.*)$/i)
{
$lang = $1;
next;
}
elsif($ra_data->[$line_number] =~ m:\s*\}\s*:)
{
# do nothing.
}
else
{
print STDERR "Error parsing provides block line '$ra_data->[$line_number]'\n";
print STDERR "Unrecognised statement\n";
$CST_errors++;
}
}
}
return ($provides, $script, $lang, $line_number);
}
#/*@@
# @routine ParseProvidesBlock
# @date Mon May 8 15:52:40 2000
# @author Tom Goodale
# @desc
# Parses the OPTIONAL block in a configuration.ccl file.
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub ParseOptionalBlock
{
my ($line_number, $ra_data) = @_;
my ($optional, $define);
$ra_data->[$line_number] =~ m/^\s*OPTIONAL\s*(.*)/i;
$optional = $1;
$define = "";
$line_number++;
if($ra_data->[$line_number] !~ m/^\s*\{\s*$/)
{
print STDERR "Error parsing optional block line '$ra_data->[$line_number]'\n";
print STDERR "Missing { at start of block\n";
$CST_errors++;
$line_number++ while($ra_data->[$line_number] !~ m:\s*\}\s*:);
}
else
{
while($ra_data->[$line_number] !~ m:\s*\}\s*:)
{
$line_number++;
if($ra_data->[$line_number] =~ m/^\s*DEFINE\s*(.*)$/i)
{
if($define eq "")
{
$define = $1;
next;
}
else
{
print STDERR "Error parsing optional block line '$ra_data->[$line_number]'\n";
print STDERR "Only one define allowed\n";
$CST_errors++;
}
}
elsif($ra_data->[$line_number] =~ m:\s*\}\s*:)
{
# do nothing.
}
else
{
print STDERR "Error parsing provides block line '$ra_data->[$line_number]'\n";
print STDERR "Unrecognised statement\n";
$CST_errors++;
}
}
}
return ($optional, $define, $line_number);
}
#/*@@
# @routine PrintConfigurationDatabase
# @date Mon May 8 15:53:23 2000
# @author Tom Goodale
# @desc
# Prints out the configuration database.
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub PrintConfigurationDatabase
{
my($configuration_data) = @_;
my($field);
foreach $field ( sort keys %$configuration_data)
{
print "$field has value $configuration_data->{$field}\n";
}
}
#/*@@
# @routine PrintConfigurationStatistics
# @date Mon May 8 15:53:23 2000
# @author Tom Goodale
# @desc
# Prints out the configuration statistics.
# @enddesc
# @calls
# @calledby
# @history
#
# @endhistory
#
#@@*/
sub PrintConfigurationStatistics
{
my($thorn, $configuration_data) = @_;
print " " . "Provides: " . $configuration_data->{"\U$thorn\E PROVIDES"} . ".\n";
return;
}
1;
|
