#! /usr/bin/perl -w
### lbl2cmp_txt2m
## Creates _cmp.m from _lbl.txt
## Copyright (C) 2004 by Geraint Paul Bevan
######################################
##### Model Transformation Tools #####
######################################
use strict;
use diagnostics;
use Getopt::Long;
sub usage;
sub read_cmp_file;
sub read_cmp_line;
sub name_anonymous_component;
sub port_or_component_or_junction;
sub read_lbl_file;
sub read_lbl_line;
sub sort_components;
sub write_header;
sub write_body;
sub write_component;
my $debug = 0;
## fields to write to cmp.m
my (@component_name,
%component_type,
%component_cr,
%component_arg,
%component_rep);
my (@component_name_lbl_index,
%sorted_component_list,
%component_class,
%anonymous_component_type_index);
## files to read/write
my ($cmp, $lbl, $out);
my $sys = '';
GetOptions ('sys=s' => \$sys,
'debug' => \$debug);
die usage() if ($sys eq '');
$cmp = "${sys}_cmp.txt";
$lbl = "${sys}_lbl.txt";
$out = "${sys}_cmp.m";
read_cmp_file();
read_lbl_file();
sort_components();
write_header();
write_body();
sub usage() {
return "Usage: lbl2cmp_txt2m --sys=<sys>\n";
}
sub read_cmp_file() {
my ($line, $name, $type, $class, $rep, $i);
open (CMP, $cmp) or die ("MTT: lbl2cmp_txt2m, cannot open $cmp");
$i = 0;
while (<CMP>) {
chomp;
# skip blank lines
next if (/^(\s)*$/);
# skip comments
next if (/^(\s)*[%\#]/);
# remove leading and trailing whitespace
s/^\s*(\S.*\S)\s*$/$1/;
$line = $_;
print "read_cmp_file: line='${line}'\n" if ($debug);
# cmp provides type, name and repetition information
# class is inferred from type and name
# (cr and args are placeholders)
($type, $name, $rep) = read_cmp_line($line);
$name = name_anonymous_component($type) if ($name eq '');
$class = port_or_component_or_junction ($type, $name);
$component_name [++$i] = $name;
$component_type {$name} = $type;
$component_rep {$name} = $rep;
$component_cr {$name} = '';
$component_arg {$name} = '';
$component_class {$name} = $class;
}
close (CMP);
}
sub read_cmp_line() {
my $line = $_;
my ($type, $name, $rep, $misc);
($type, $misc) = split (/:/, $line);
$type = $line unless defined ($type);
if (defined ($misc)) {
($name, $rep) = split (/\*/, $misc);
$name = $misc unless defined ($name);
}
$name = '' unless defined $name;
$rep = 1 unless defined $rep;
print "read_cmp_line: type='$type', name='$name', rep='$rep'\n" if ($debug);
return ($type, $name, $rep);
}
sub name_anonymous_component() {
my $type = $_;
my ($name, $num);
if (defined ($anonymous_component_type_index{$type})) {
$num = ++$anonymous_component_type_index{$type};
$name = "mtt${type}_${num}";
} else {
$anonymous_component_type_index{$type} = 1;
$name = "mtt${type}";
}
print "name_anonymous_component: type='${type}', name='${name}'\n" if ($debug);
return ($name);
}
sub port_or_component_or_junction() {
# ports are internal SS components (SS:[...])
# junctions are '0' and '1' types
# everything else is a component, including external SS types.
my ($type, $name) = @_;
my $retval;
if ($type eq "SS") {
$_ = $name;
if (/\[.+\]/) {
$retval = "port";
} else {
$retval = "component";
}
} elsif ($type eq "0") {
$retval = "0junction";
} elsif ($type eq "1") {
$retval = "1junction";
} else {
$retval = "component";
}
print "port_or_component_or_junction: type='$type', name='$name' class='$retval'\n" if ($debug);
return ($retval);
}
sub read_lbl_file() {
my (@line, $name, $type, $cr, $arg, $i);
open (LBL, $lbl) or die ("MTT: lbl2cmp_txt2m, cannot open $lbl");
$i = 0;
while (<LBL>) {
chomp;
# skip blank lines
next if (/^(\s)*$/);
# skip comments
next if (/^(\s)*[%\#]/);
# remove leading and trailing whitespace
s/^\s*(\S.*\S)\s*$/$1/;
# lbl provides name, cr and arg information
($name, $cr, $arg) = read_lbl_line (@line);
$component_cr{$name} = $cr;
$component_arg{$name} = $arg;
$component_name_lbl_index[++$i] = $name;
}
close (LBL);
}
sub read_lbl_line() {
my @line = @_;
my ($name, $cr, $arg);
@line = split (/\s+/);
$name = shift (@line);
# strip repetitions (if any)
$name =~ s/([^\*]*)\*.*/$1/;
$cr = shift (@line);
$arg = shift (@line);
$cr = '' unless defined ($cr);
$arg = '' unless defined ($arg);
print "read_lbl_line: name='$name' cr='$cr' arg='$arg'\n" if ($debug);
return ($name, $cr, $arg);
}
sub write_header() {
my $date = `date`;
chomp ($date);
open (OUT, ">$out") or
die "MTT: cannot open $out for writing.\n";
print OUT << "EOF";
## $out -*-octave-*-
## Generated by MTT on $date
function [comp_type, name, cr, arg, repetitions] = ${sys}_cmp(i)
EOF
close (OUT);
}
sub sort_components ()
{
# sorts components into the order in which they are found in the label
# file within the classes: ports, components then junctions.
my ($name, $class, $i, $j, $target);
$i = 0;
foreach $target ("port", "component", "0junction", "1junction") {
# get targets in lbl
for ($j = 1; $j < scalar @component_name_lbl_index; $j++) {
$name = $component_name_lbl_index[$j];
$class = $component_class{$name};
if ($class eq $target) {
$sorted_component_list{$name} = ++$i;
print "sorted: '$name' '$i'\n" if ($debug);
}
}
# get targets not in lbl
for ($j = 1; $j < scalar @component_name; $j++) {
$name = $component_name[$j];
$class = $component_class{$name};
if ($class eq $target) {
if (! defined ($sorted_component_list{$name})) {
$sorted_component_list{$name} = ++$i;
print "sorted: '$name' '$i'\n" if ($debug);
}
}
}
}
}
sub write_body() {
my (%reverse_sorted_component_list, $name);
%reverse_sorted_component_list = reverse (%sorted_component_list);
for (my $key = 1; $key < scalar @component_name; $key++) {
$name = $reverse_sorted_component_list{$key};
write_component ($name);
}
}
sub write_component() {
my ($name) = @_;
my $i = $sorted_component_list{$name};
open (OUT, ">>$out") or
die "MTT: cannot open $out for writing.\n";
print OUT
"if (i == $i)\n" .
"\tcomp_type = '$component_type{$name}';\n" .
"\tname = '$name'\n" .
"\tcr = '$component_cr{$name}';\n" .
"\targ = '$component_arg{$name}';\n" .
"\trepetitions = $component_rep{$name} ;\n" .
"end\n";
close (OUT);
}