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#!/usr/bin/perl
#
# compile.pl - AFT element file compiler.
#
# Copyright (C) 1996-2003 Todd Coram. All rights reserved.
my $VERSION="2.07";
# Hash of elements
my %element = ();
# Hash of variables
my %postvar = ();
my $preamble;
my $postamble;
my $subs = '';
my $postfilter;
my $prefilter;
$date = scalar localtime;
(@ARGV == 0) && do {
print (STDERR "Usage: aft-compile element_file.dat \n");
exit 2;
};
$infile = $ARGV[0];
$outfile = $ARGV[0];
$outfile =~ s/([^.])\.dat$/$1\.pm/;
open(OUT, ">$outfile") || die "Can't open $outfile for output!";
select(OUT);
print (STDERR "Compiling $infile into $outfile ...\n");
print "# AFT Output Elements.\n";
print "# !!DO NOT EDIT!! This file was automatically generated by aft-compile ";
print "v$VERSION on $date\n";
print "# See http://www.maplefish.com/todd/aft.html for details.\n";
&processFile($infile);
sub processFile {
my ($fname) = @_;
local *IN;
open(IN, $fname) || die "Can't open data file: $fname";
my $inPreamble = 0;
while (<IN>) {
chop;
# Skip comment lines
next if (/^(\s*\#|\Z)/ && !$inPreamble && !$inPostamble && !$inSubs);
# Single line sub
/^sub (.+)/ && do {
$subs .= "sub $1\n";
};
/^use (.+)/ && do {
print STDERR "Using features from $1...\n";
print "\n# Using features from $1.\n";
&processFile($1);
};
# Enter and exit preambles and postambles states.
#
/^\s*Preamble\s*\{/ && ($inPreamble = 1, $preamble = '', next);
/^\s*\}\s*Preamble/ && ($inPreamble = 0, next);
/^\s*Postamble\s*\{/ && ($inPostamble = 1, $postamble = '', next);
/^\s*\}\s*Postamble/ && ($inPostamble = 0, next);
/^\s*Subs\s*\{/ && ($inSubs = 1, next);
/^\s*\}\s*Subs/ && ($inSubs = 0, next);
# Read in the preamble and postamble text.
#
$inPreamble && ($preamble .= $_."\n", next);
$inPostamble && ($postamble .= $_."\n", next);
$inSubs && ($sub .= $_."\n", next);
# Parse: preFilter into pairs (stored one after other in the array).
#
/^\s*(preFilter)\s+([^\s]+)\s*([^\s]*)/ && do {
push(@prefilter, "\$line=~s/$2/$3/g;");
next;
};
/^\s*(preFilter\/e)\s+([^\s]+)\s*([^\s]*)/ && do {
push(@prefilter, "\$line=~s/$2/$3/ge;");
next;
};
# Parse: postFilter into pairs (stored one after other in the array).
#
/^\s*(postFilter)\s+([^\s]+)\s+([^\s]+)/ && do {
push(@postfilter, "\$line=~s/$2/$3/g;");
next;
};
/^\s*(postFilter\/e)\s+([^\s]+)\s+([^\s]+)/ && do {
push(@postfilter, "\$line=~s/$2/$3/ge;");
next;
};
# Post filtering variables
#
/^SET\s+(\w+)\s*=\s*/ && ($postvar{$1} = $', next);
# Elements
#
/^\s*([^\s]+)\s*/ && ($element{$1} = $');
}
close(IN);
}
print "package AFT_OUTPUT;\n\n";
print 'use vars qw ($file_preamble $file_postamble %elem %pragma_postvar);'."\n\n";
print '$file_preamble = \'\'; # Holds preamble for output file.'."\n";
print '$file_postamble = \'\'; # Holds postamble for output file.'."\n";
print '%elem = (); # Element commands for producing output file.';
print '%pragma_postvar = (); # Variables for substitution post-filtering.'."\n";
print "\n\nsub init_elements {\n";
$interpolate = ($element{"interpolate"} =~ 'no') ? 0 : 1;
print "\t\%pragma_postvar = (\n";
foreach $item (keys %postvar) {
print "\t\t'$item' =>\t '$postvar{$item}',\n";
}
print "\t);\n";
print "\t\%elem = (\n";
foreach $item (keys %element) {
if ($element{$item} =~ /^\<Undefined/) {
print (STDERR "Undefined element: [$item]\n");
}
if ($interpolate && $item ne "PostProcessor") {
# Quote nasty things they may get in the way
$element{$item} =~ s/([\'\@\$\%])/\\$1/g;
print "\t\t'$item' =>\t qq'$element{$item}',\n";
} else {
$element{$item} =~ s/([\'])/\\$1/g;
print "\t\t'$item' =>\t '$element{$item}',\n";
}
}
print "\t);\n";
print "\n## Preamble:\n\n";
$preamble =~ s/([\'])/\\$1/g;
print "\$file_preamble = '$preamble';\n";
print "\n## Postamble:\n\n";
$postamble =~ s/([\'])/\\$1/g;
print "\$file_postamble = '$postamble';\n";
print "}\n\n";
print "\n## Prefilter subroutine:\n\n";
print "sub prefilter {\n";
print " my (\$line) = \@_;\n";
print " ".join("\n ", @prefilter);
print "\n return \$line;\n}\n";
print "\n## Postfilter subroutine:\n\n";
print "sub postfilter {\n";
print " my (\$line) = \@_;\n";
print " ".join("\n ", @postfilter);
print "\n return \$line;\n}\n";
print "\n $subs\n";
print "\n1;\n";
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