--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtommath/helper.pl	Mon Sep 16 15:50:38 2019 +0200
@@ -0,0 +1,281 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+use Getopt::Long;
+use File::Find 'find';
+use File::Basename 'basename';
+use File::Glob 'bsd_glob';
+
+sub read_file {
+  my $f = shift;
+  open my $fh, "<", $f or die "FATAL: read_rawfile() cannot open file '$f': $!";
+  binmode $fh;
+  return do { local $/; <$fh> };
+}
+
+sub write_file {
+  my ($f, $data) = @_;
+  die "FATAL: write_file() no data" unless defined $data;
+  open my $fh, ">", $f or die "FATAL: write_file() cannot open file '$f': $!";
+  binmode $fh;
+  print $fh $data or die "FATAL: write_file() cannot write to '$f': $!";
+  close $fh or die "FATAL: write_file() cannot close '$f': $!";
+  return;
+}
+
+sub check_source {
+  my @all_files = (
+        bsd_glob("makefile*"),
+        bsd_glob("*.{h,c,sh,pl}"),
+        bsd_glob("*/*.{h,c,sh,pl}"),
+  );
+
+  my $fails = 0;
+  for my $file (sort @all_files) {
+    my $troubles = {};
+    my $lineno = 1;
+    my $content = read_file($file);
+    push @{$troubles->{crlf_line_end}}, '?' if $content =~ /\r/;
+    for my $l (split /\n/, $content) {
+      push @{$troubles->{merge_conflict}},     $lineno if $l =~ /^(<<<<<<<|=======|>>>>>>>)([^<=>]|$)/;
+      push @{$troubles->{trailing_space}},     $lineno if $l =~ / $/;
+      push @{$troubles->{tab}},                $lineno if $l =~ /\t/ && basename($file) !~ /^makefile/i;
+      push @{$troubles->{non_ascii_char}},     $lineno if $l =~ /[^[:ascii:]]/;
+      push @{$troubles->{cpp_comment}},        $lineno if $file =~ /\.(c|h)$/ && ($l =~ /\s\/\// || $l =~ /\/\/\s/);
+      # we prefer using XMALLOC, XFREE, XREALLOC, XCALLOC ...
+      push @{$troubles->{unwanted_malloc}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmalloc\s*\(/;
+      push @{$troubles->{unwanted_realloc}},   $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\brealloc\s*\(/;
+      push @{$troubles->{unwanted_calloc}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bcalloc\s*\(/;
+      push @{$troubles->{unwanted_free}},      $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bfree\s*\(/;
+      # and we probably want to also avoid the following
+      push @{$troubles->{unwanted_memcpy}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmemcpy\s*\(/;
+      push @{$troubles->{unwanted_memset}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmemset\s*\(/;
+      push @{$troubles->{unwanted_memcpy}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmemcpy\s*\(/;
+      push @{$troubles->{unwanted_memmove}},   $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmemmove\s*\(/;
+      push @{$troubles->{unwanted_memcmp}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bmemcmp\s*\(/;
+      push @{$troubles->{unwanted_strcmp}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bstrcmp\s*\(/;
+      push @{$troubles->{unwanted_strcpy}},    $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bstrcpy\s*\(/;
+      push @{$troubles->{unwanted_strncpy}},   $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bstrncpy\s*\(/;
+      push @{$troubles->{unwanted_clock}},     $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bclock\s*\(/;
+      push @{$troubles->{unwanted_qsort}},     $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bqsort\s*\(/;
+      push @{$troubles->{sizeof_no_brackets}}, $lineno if $file =~ /^[^\/]+\.c$/ && $l =~ /\bsizeof\s*[^\(]/;
+      if ($file =~ m|^[^\/]+\.c$| && $l =~ /^static(\s+[a-zA-Z0-9_]+)+\s+([a-zA-Z0-9_]+)\s*\(/) {
+        my $funcname = $2;
+        # static functions should start with s_
+        push @{$troubles->{staticfunc_name}}, "$lineno($funcname)" if $funcname !~ /^s_/;
+      }
+      $lineno++;
+    }
+    for my $k (sort keys %$troubles) {
+      warn "[$k] $file line:" . join(",", @{$troubles->{$k}}) . "\n";
+      $fails++;
+    }
+  }
+
+  warn( $fails > 0 ? "check-source:    FAIL $fails\n" : "check-source:    PASS\n" );
+  return $fails;
+}
+
+sub check_comments {
+  my $fails = 0;
+  my $first_comment = <<'MARKER';
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * SPDX-License-Identifier: Unlicense
+ */
+MARKER
+  my $last_comment = <<'MARKER';
+/* ref:         HEAD -> master, tag: v1.1.0 */
+/* git commit:  08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
+/* commit time: 2019-01-28 20:32:32 +0100 */
+MARKER
+  #my @all_files = (bsd_glob("*.{h,c}"), bsd_glob("*/*.{h,c}"));
+  my @all_files = (bsd_glob("*.{h,c}"));
+  for my $f (@all_files) {
+    my $txt = read_file($f);
+    if ($txt !~ /\Q$first_comment\E/s) {
+      warn "[first_comment] $f\n";
+      $fails++;
+    }
+    if ($txt !~ /\Q$last_comment\E\s*$/s) {
+      warn "[last_comment] $f\n";
+      $fails++;
+    }
+  }
+  warn( $fails > 0 ? "check-comments:  FAIL $fails\n" : "check-comments:  PASS\n" );
+  return $fails;
+}
+
+sub prepare_variable {
+  my ($varname, @list) = @_;
+  my $output = "$varname=";
+  my $len = length($output);
+  foreach my $obj (sort @list) {
+    $len = $len + length $obj;
+    $obj =~ s/\*/\$/;
+    if ($len > 100) {
+      $output .= "\\\n";
+      $len = length $obj;
+    }
+    $output .= $obj . ' ';
+  }
+  $output =~ s/ $//;
+  return $output;
+}
+
+sub prepare_msvc_files_xml {
+  my ($all, $exclude_re, $targets) = @_;
+  my $last = [];
+  my $depth = 2;
+
+  # sort files in the same order as visual studio (ugly, I know)
+  my @parts = ();
+  for my $orig (@$all) {
+    my $p = $orig;
+    $p =~ s|/|/~|g;
+    $p =~ s|/~([^/]+)$|/$1|g;
+    my @l = map { sprintf "% -99s", $_ } split /\//, $p;
+    push @parts, [ $orig, join(':', @l) ];
+  }
+  my @sorted = map { $_->[0] } sort { $a->[1] cmp $b->[1] } @parts;
+
+  my $files = "<Files>\r\n";
+  for my $full (@sorted) {
+    my @items = split /\//, $full; # split by '/'
+    $full =~ s|/|\\|g;             # replace '/' bt '\'
+    shift @items; # drop first one (src)
+    pop @items;   # drop last one (filename.ext)
+    my $current = \@items;
+    if (join(':', @$current) ne join(':', @$last)) {
+      my $common = 0;
+      $common++ while ($last->[$common] && $current->[$common] && $last->[$common] eq $current->[$common]);
+      my $back = @$last - $common;
+      if ($back > 0) {
+        $files .= ("\t" x --$depth) . "</Filter>\r\n" for (1..$back);
+      }
+      my $fwd = [ @$current ]; splice(@$fwd, 0, $common);
+      for my $i (0..scalar(@$fwd) - 1) {
+        $files .= ("\t" x $depth) . "<Filter\r\n";
+        $files .= ("\t" x $depth) . "\tName=\"$fwd->[$i]\"\r\n";
+        $files .= ("\t" x $depth) . "\t>\r\n";
+        $depth++;
+      }
+      $last = $current;
+    }
+    $files .= ("\t" x $depth) . "<File\r\n";
+    $files .= ("\t" x $depth) . "\tRelativePath=\"$full\"\r\n";
+    $files .= ("\t" x $depth) . "\t>\r\n";
+    if ($full =~ $exclude_re) {
+      for (@$targets) {
+        $files .= ("\t" x $depth) . "\t<FileConfiguration\r\n";
+        $files .= ("\t" x $depth) . "\t\tName=\"$_\"\r\n";
+        $files .= ("\t" x $depth) . "\t\tExcludedFromBuild=\"true\"\r\n";
+        $files .= ("\t" x $depth) . "\t\t>\r\n";
+        $files .= ("\t" x $depth) . "\t\t<Tool\r\n";
+        $files .= ("\t" x $depth) . "\t\t\tName=\"VCCLCompilerTool\"\r\n";
+        $files .= ("\t" x $depth) . "\t\t\tAdditionalIncludeDirectories=\"\"\r\n";
+        $files .= ("\t" x $depth) . "\t\t\tPreprocessorDefinitions=\"\"\r\n";
+        $files .= ("\t" x $depth) . "\t\t/>\r\n";
+        $files .= ("\t" x $depth) . "\t</FileConfiguration>\r\n";
+      }
+    }
+    $files .= ("\t" x $depth) . "</File>\r\n";
+  }
+  $files .= ("\t" x --$depth) . "</Filter>\r\n" for (@$last);
+  $files .= "\t</Files>";
+  return $files;
+}
+
+sub patch_file {
+  my ($content, @variables) = @_;
+  for my $v (@variables) {
+    if ($v =~ /^([A-Z0-9_]+)\s*=.*$/si) {
+      my $name = $1;
+      $content =~ s/\n\Q$name\E\b.*?[^\\]\n/\n$v\n/s;
+    }
+    else {
+      die "patch_file failed: " . substr($v, 0, 30) . "..";
+    }
+  }
+  return $content;
+}
+
+sub version_from_tomcrypt_h {
+  my $h = read_file(shift);
+  if ($h =~ /\n#define\s*SCRYPT\s*"([0-9]+)\.([0-9]+)\.([0-9]+)(.*)"/s) {
+    return "VERSION_PC=$1.$2.$3", "VERSION_LT=1:1", "VERSION=$1.$2.$3$4", "PROJECT_NUMBER=$1.$2.$3$4";
+  }
+  else {
+    die "#define SCRYPT not found in tomcrypt.h";
+  }
+}
+
+sub process_makefiles {
+  my $write = shift;
+  my $changed_count = 0;
+  my @o = map { my $x = $_; $x =~ s/\.c$/.o/; $x } bsd_glob("*.c");
+  my @all = bsd_glob("*.{c,h}");
+
+  my $var_o = prepare_variable("OBJECTS", @o);
+  (my $var_obj = $var_o) =~ s/\.o\b/.obj/sg;
+
+  # update OBJECTS + HEADERS in makefile*
+  for my $m (qw/ Makefile.in /) {
+    my $old = read_file($m);
+    my $new = $m eq 'makefile.msvc' ? patch_file($old, $var_obj)
+                                    : patch_file($old, $var_o);
+    if ($old ne $new) {
+      write_file($m, $new) if $write;
+      warn "changed: $m\n";
+      $changed_count++;
+    }
+  }
+
+  if ($write) {
+    return 0; # no failures
+  }
+  else {
+    warn( $changed_count > 0 ? "check-makefiles: FAIL $changed_count\n" : "check-makefiles: PASS\n" );
+    return $changed_count;
+  }
+}
+
+sub die_usage {
+  die <<"MARKER";
+usage: $0 -s   OR   $0 --check-source
+       $0 -o   OR   $0 --check-comments
+       $0 -m   OR   $0 --check-makefiles
+       $0 -a   OR   $0 --check-all
+       $0 -u   OR   $0 --update-makefiles
+MARKER
+}
+
+GetOptions( "s|check-source"        => \my $check_source,
+            "o|check-comments"      => \my $check_comments,
+            "m|check-makefiles"     => \my $check_makefiles,
+            "a|check-all"           => \my $check_all,
+            "u|update-makefiles"    => \my $update_makefiles,
+            "h|help"                => \my $help
+          ) or die_usage;
+
+my $failure;
+$failure ||= check_source()       if $check_all || $check_source;
+$failure ||= check_comments()     if $check_all || $check_comments;
+$failure ||= process_makefiles(0) if $check_all || $check_makefiles;
+$failure ||= process_makefiles(1) if $update_makefiles;
+
+die_usage unless defined $failure;
+exit $failure ? 1 : 0;
+
+# ref:         HEAD -> master, tag: v1.1.0
+# git commit:  08549ad6bc8b0cede0b357a9c341c5c6473a9c55
+# commit time: 2019-01-28 20:32:32 +0100