tommath/dep.pl

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Perl
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#!/usr/bin/perl
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#
# Walk through source, add labels and make classes
#
use strict;
use warnings;
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my %deplist;
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#open class file and write preamble
open(my $class, '>', 'tommath_class.h') or die "Couldn't open tommath_class.h for writing\n";
print {$class} << 'EOS';
#if !(defined(LTM1) && defined(LTM2) && defined(LTM3))
#if defined(LTM2)
# define LTM3
#endif
#if defined(LTM1)
# define LTM2
#endif
#define LTM1
#if defined(LTM_ALL)
EOS
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foreach my $filename (glob 'bn*.c') {
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my $define = $filename;
print "Processing $filename\n";
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# convert filename to upper case so we can use it as a define
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$define =~ tr/[a-z]/[A-Z]/;
$define =~ tr/\./_/;
print {$class} << "EOS";
# define $define
EOS
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# now copy text and apply #ifdef as required
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my $apply = 0;
open(my $src, '<', $filename);
open(my $out, '>', 'tmp');
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# first line will be the #ifdef
my $line = <$src>;
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if ($line =~ /include/) {
print {$out} $line;
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} else {
print {$out} << "EOS";
#include "tommath_private.h"
#ifdef $define
$line
EOS
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$apply = 1;
}
while (<$src>) {
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if (!($_ =~ /tommath\.h/)) {
print {$out} $_;
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}
}
if ($apply == 1) {
print {$out} << 'EOS';
#endif
EOS
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}
close $src;
close $out;
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unlink $filename;
rename 'tmp', $filename;
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}
print {$class} << 'EOS';
#endif
EOS
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# now do classes
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foreach my $filename (glob 'bn*.c') {
open(my $src, '<', $filename) or die "Can't open source file!\n";
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# convert filename to upper case so we can use it as a define
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$filename =~ tr/[a-z]/[A-Z]/;
$filename =~ tr/\./_/;
print {$class} << "EOS";
#if defined($filename)
EOS
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my $list = $filename;
# scan for mp_* and make classes
while (<$src>) {
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my $line = $_;
while ($line =~ m/(fast_)*(s_)*mp\_[a-z_0-9]*/) {
$line = $';
# now $& is the match, we want to skip over LTM keywords like
# mp_int, mp_word, mp_digit
if (!($& eq 'mp_digit') && !($& eq 'mp_word') && !($& eq 'mp_int') && !($& eq 'mp_min_u32')) {
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my $a = $&;
$a =~ tr/[a-z]/[A-Z]/;
$a = 'BN_' . $a . '_C';
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if (!($list =~ /$a/)) {
print {$class} << "EOS";
# define $a
EOS
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}
$list = $list . ',' . $a;
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}
}
}
$deplist{$filename} = $list;
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print {$class} << 'EOS';
#endif
EOS
close $src;
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}
print {$class} << 'EOS';
#ifdef LTM3
# define LTM_LAST
#endif
#include <tommath_superclass.h>
#include <tommath_class.h>
#else
# define LTM_LAST
#endif
EOS
close $class;
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#now let's make a cool call graph...
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open(my $out, '>', 'callgraph.txt');
my $indent = 0;
my $list;
foreach (sort keys %deplist) {
$list = '';
draw_func($deplist{$_});
print {$out} "\n\n";
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}
close $out;
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sub draw_func
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{
my @funcs = split ',', $_[0];
if ($list =~ /$funcs[0]/) {
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return;
} else {
$list = $list . $funcs[0];
}
if ($indent == 0) {
} elsif ($indent >= 1) {
print {$out} '| ' x ($indent - 1) . '+--->';
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}
print {$out} $funcs[0] . "\n";
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shift @funcs;
my $temp = $list;
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foreach my $i (@funcs) {
++$indent;
draw_func($deplist{$i}) if exists $deplist{$i};
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--$indent;
}
$list = $temp;
return;
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}