1 ################################################################################
5 ## $Date: 2009/01/18 14:10:54 +0100 $
7 ################################################################################
9 ## Version 3.x, Copyright (C) 2004-2009, Marcus Holland-Moritz.
10 ## Version 2.x, Copyright (C) 2001, Paul Marquess.
11 ## Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
13 ## This program is free software; you can redistribute it and/or
14 ## modify it under the same terms as Perl itself.
16 ################################################################################
24 # Disable broken TRIE-optimization
25 BEGIN { eval '${^RE_TRIE_MAXBUF} = -1' if $] >= 5.009004 && $] <= 5.009005 }
27 my $VERSION = __VERSION__;
40 my($ppport) = $0 =~ /([\w.]+)$/;
41 my $LF = '(?:\r\n|[\r\n])'; # line feed
42 my $HS = "[ \t]"; # horizontal whitespace
44 # Never use C comments in this file!
47 my $rccs = quotemeta $ccs;
48 my $rcce = quotemeta $cce;
52 Getopt::Long::GetOptions(\%opt, qw(
53 help quiet diag! filter! hints! changes! cplusplus strip version
54 patch=s copy=s diff=s compat-version=s
55 list-provided list-unsupported api-info=s
59 if ($@ and grep /^-/, @ARGV) {
60 usage() if "@ARGV" =~ /^--?h(?:elp)?$/;
61 die "Getopt::Long not found. Please don't use any options.\n";
65 print "This is $0 $VERSION.\n";
69 usage() if $opt{help};
70 strip() if $opt{strip};
72 if (exists $opt{'compat-version'}) {
73 my($r,$v,$s) = eval { parse_version($opt{'compat-version'}) };
75 die "Invalid version number format: '$opt{'compat-version'}'\n";
77 die "Only Perl 5 is supported\n" if $r != 5;
78 die "Invalid version number: $opt{'compat-version'}\n" if $v >= 1000 || $s >= 1000;
79 $opt{'compat-version'} = sprintf "%d.%03d%03d", $r, $v, $s;
82 $opt{'compat-version'} = 5;
85 my %API = map { /^(\w+)\|([^|]*)\|([^|]*)\|(\w*)$/
87 ($2 ? ( base => $2 ) : ()),
88 ($3 ? ( todo => $3 ) : ()),
89 (index($4, 'v') >= 0 ? ( varargs => 1 ) : ()),
90 (index($4, 'p') >= 0 ? ( provided => 1 ) : ()),
91 (index($4, 'n') >= 0 ? ( nothxarg => 1 ) : ()),
93 : die "invalid spec: $_" } qw(
97 if (exists $opt{'list-unsupported'}) {
99 for $f (sort { lc $a cmp lc $b } keys %API) {
100 next unless $API{$f}{todo};
101 print "$f ", '.'x(40-length($f)), " ", format_version($API{$f}{todo}), "\n";
106 # Scan for possible replacement candidates
108 my(%replace, %need, %hints, %warnings, %depends);
110 my($hint, $define, $function);
116 / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]*)
117 | "[^"\\]*(?:\\.[^"\\]*)*"
118 | '[^'\\]*(?:\\.[^'\\]*)*' }{}egsx;
119 grep { exists $API{$_} } $code =~ /(\w+)/mg;
124 my $h = $hint->[0] eq 'Hint' ? \%hints : \%warnings;
125 if (m{^\s*\*\s(.*?)\s*$}) {
126 for (@{$hint->[1]}) {
127 $h->{$_} ||= ''; # suppress warning with older perls
134 $hint = [$1, [split /,?\s+/, $2]]
135 if m{^\s*$rccs\s+(Hint|Warning):\s+(\w+(?:,?\s+\w+)*)\s*$};
138 if ($define->[1] =~ /\\$/) {
142 if (exists $API{$define->[0]} && $define->[1] !~ /^DPPP_\(/) {
143 my @n = find_api($define->[1]);
144 push @{$depends{$define->[0]}}, @n if @n
150 $define = [$1, $2] if m{^\s*#\s*define\s+(\w+)(?:\([^)]*\))?\s+(.*)};
154 if (exists $API{$function->[0]}) {
155 my @n = find_api($function->[1]);
156 push @{$depends{$function->[0]}}, @n if @n
161 $function->[1] .= $_;
165 $function = [$1, ''] if m{^DPPP_\(my_(\w+)\)};
167 $replace = $1 if m{^\s*$rccs\s+Replace:\s+(\d+)\s+$rcce\s*$};
168 $replace{$2} = $1 if $replace and m{^\s*#\s*define\s+(\w+)(?:\([^)]*\))?\s+(\w+)};
169 $replace{$2} = $1 if m{^\s*#\s*define\s+(\w+)(?:\([^)]*\))?\s+(\w+).*$rccs\s+Replace\s+$rcce};
170 $replace{$1} = $2 if m{^\s*$rccs\s+Replace (\w+) with (\w+)\s+$rcce\s*$};
172 if (m{^\s*$rccs\s+(\w+(\s*,\s*\w+)*)\s+depends\s+on\s+(\w+(\s*,\s*\w+)*)\s+$rcce\s*$}) {
173 my @deps = map { s/\s+//g; $_ } split /,/, $3;
175 for $d (map { s/\s+//g; $_ } split /,/, $1) {
176 push @{$depends{$d}}, @deps;
180 $need{$1} = 1 if m{^#if\s+defined\(NEED_(\w+)(?:_GLOBAL)?\)};
183 for (values %depends) {
185 $_ = [sort grep !$s{$_}++, @$_];
188 if (exists $opt{'api-info'}) {
191 my $match = $opt{'api-info'} =~ m!^/(.*)/$! ? $1 : "^\Q$opt{'api-info'}\E\$";
192 for $f (sort { lc $a cmp lc $b } keys %API) {
193 next unless $f =~ /$match/;
194 print "\n=== $f ===\n\n";
196 if ($API{$f}{base} || $API{$f}{todo}) {
197 my $base = format_version($API{$f}{base} || $API{$f}{todo});
198 print "Supported at least starting from perl-$base.\n";
201 if ($API{$f}{provided}) {
202 my $todo = $API{$f}{todo} ? format_version($API{$f}{todo}) : "__MIN_PERL__";
203 print "Support by $ppport provided back to perl-$todo.\n";
204 print "Support needs to be explicitly requested by NEED_$f.\n" if exists $need{$f};
205 print "Depends on: ", join(', ', @{$depends{$f}}), ".\n" if exists $depends{$f};
206 print "\n$hints{$f}" if exists $hints{$f};
207 print "\nWARNING:\n$warnings{$f}" if exists $warnings{$f};
210 print "No portability information available.\n" unless $info;
213 $count or print "Found no API matching '$opt{'api-info'}'.";
218 if (exists $opt{'list-provided'}) {
220 for $f (sort { lc $a cmp lc $b } keys %API) {
221 next unless $API{$f}{provided};
223 push @flags, 'explicit' if exists $need{$f};
224 push @flags, 'depend' if exists $depends{$f};
225 push @flags, 'hint' if exists $hints{$f};
226 push @flags, 'warning' if exists $warnings{$f};
227 my $flags = @flags ? ' ['.join(', ', @flags).']' : '';
234 my @srcext = qw( .xs .c .h .cc .cpp -c.inc -xs.inc );
235 my $srcext = join '|', map { quotemeta $_ } @srcext;
242 push @files, $_ unless $seen{$_}++;
244 else { warn "'$_' is not a file.\n" }
247 my @new = grep { -f } glob $_
248 or warn "'$_' does not exist.\n";
249 push @files, grep { !$seen{$_}++ } @new;
256 File::Find::find(sub {
257 $File::Find::name =~ /($srcext)$/i
258 and push @files, $File::Find::name;
262 @files = map { glob "*$_" } @srcext;
266 if (!@ARGV || $opt{filter}) {
268 my %xsc = map { /(.*)\.xs$/ ? ("$1.c" => 1, "$1.cc" => 1) : () } @files;
270 my $out = exists $xsc{$_} || /\b\Q$ppport\E$/i || !/($srcext)$/i;
271 push @{ $out ? \@out : \@in }, $_;
274 warning("Skipping the following files (use --nofilter to avoid this):\n| ", join "\n| ", @out);
279 die "No input files given!\n" unless @files;
281 my(%files, %global, %revreplace);
282 %revreplace = reverse %replace;
284 my $patch_opened = 0;
286 for $filename (@files) {
287 unless (open IN, "<$filename") {
288 warn "Unable to read from $filename: $!\n";
292 info("Scanning $filename ...");
294 my $c = do { local $/; <IN> };
297 my %file = (orig => $c, changes => 0);
299 # Temporarily remove C/XS comments and strings from the code
303 ( ^$HS*\#$HS*include\b[^\r\n]+\b(?:\Q$ppport\E|XSUB\.h)\b[^\r\n]*
304 | ^$HS*\#$HS*(?:define|elif|if(?:def)?)\b[^\r\n]* )
306 | "[^"\\]*(?:\\.[^"\\]*)*"
307 | '[^'\\]*(?:\\.[^'\\]*)*'
308 | / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]* ) )
309 }{ defined $2 and push @ccom, $2;
310 defined $1 ? $1 : "$ccs$#ccom$cce" }mgsex;
312 $file{ccom} = \@ccom;
314 $file{has_inc_ppport} = $c =~ /^$HS*#$HS*include[^\r\n]+\b\Q$ppport\E\b/m;
318 for $func (keys %API) {
320 $match .= "|$revreplace{$func}" if exists $revreplace{$func};
321 if ($c =~ /\b(?:Perl_)?($match)\b/) {
322 $file{uses_replace}{$1}++ if exists $revreplace{$func} && $1 eq $revreplace{$func};
323 $file{uses_Perl}{$func}++ if $c =~ /\bPerl_$func\b/;
324 if (exists $API{$func}{provided}) {
325 $file{uses_provided}{$func}++;
326 if (!exists $API{$func}{base} || $API{$func}{base} > $opt{'compat-version'}) {
327 $file{uses}{$func}++;
328 my @deps = rec_depend($func);
330 $file{uses_deps}{$func} = \@deps;
332 $file{uses}{$_} = 0 unless exists $file{uses}{$_};
336 $file{needs}{$_} = 'static' if exists $need{$_};
340 if (exists $API{$func}{todo} && $API{$func}{todo} > $opt{'compat-version'}) {
341 if ($c =~ /\b$func\b/) {
342 $file{uses_todo}{$func}++;
348 while ($c =~ /^$HS*#$HS*define$HS+(NEED_(\w+?)(_GLOBAL)?)\b/mg) {
349 if (exists $need{$2}) {
350 $file{defined $3 ? 'needed_global' : 'needed_static'}{$2}++;
352 else { warning("Possibly wrong #define $1 in $filename") }
355 for (qw(uses needs uses_todo needed_global needed_static)) {
356 for $func (keys %{$file{$_}}) {
357 push @{$global{$_}{$func}}, $filename;
361 $files{$filename} = \%file;
364 # Globally resolve NEED_'s
366 for $need (keys %{$global{needs}}) {
367 if (@{$global{needs}{$need}} > 1) {
368 my @targets = @{$global{needs}{$need}};
369 my @t = grep $files{$_}{needed_global}{$need}, @targets;
371 @t = grep /\.xs$/i, @targets;
373 my $target = shift @targets;
374 $files{$target}{needs}{$need} = 'global';
375 for (@{$global{needs}{$need}}) {
376 $files{$_}{needs}{$need} = 'extern' if $_ ne $target;
381 for $filename (@files) {
382 exists $files{$filename} or next;
384 info("=== Analyzing $filename ===");
386 my %file = %{$files{$filename}};
391 for $func (sort keys %{$file{uses_Perl}}) {
392 if ($API{$func}{varargs}) {
393 unless ($API{$func}{nothxarg}) {
394 my $changes = ($c =~ s{\b(Perl_$func\s*\(\s*)(?!aTHX_?)(\)|[^\s)]*\))}
395 { $1 . ($2 eq ')' ? 'aTHX' : 'aTHX_ ') . $2 }ge);
397 warning("Doesn't pass interpreter argument aTHX to Perl_$func");
398 $file{changes} += $changes;
403 warning("Uses Perl_$func instead of $func");
404 $file{changes} += ($c =~ s{\bPerl_$func(\s*)\((\s*aTHX_?)?\s*}
409 for $func (sort keys %{$file{uses_replace}}) {
410 warning("Uses $func instead of $replace{$func}");
411 $file{changes} += ($c =~ s/\b$func\b/$replace{$func}/g);
414 for $func (sort keys %{$file{uses_provided}}) {
415 if ($file{uses}{$func}) {
416 if (exists $file{uses_deps}{$func}) {
417 diag("Uses $func, which depends on ", join(', ', @{$file{uses_deps}{$func}}));
423 $warnings += hint($func);
426 unless ($opt{quiet}) {
427 for $func (sort keys %{$file{uses_todo}}) {
428 print "*** WARNING: Uses $func, which may not be portable below perl ",
429 format_version($API{$func}{todo}), ", even with '$ppport'\n";
434 for $func (sort keys %{$file{needed_static}}) {
436 if (not exists $file{uses}{$func}) {
437 $message = "No need to define NEED_$func if $func is never used";
439 elsif (exists $file{needs}{$func} && $file{needs}{$func} ne 'static') {
440 $message = "No need to define NEED_$func when already needed globally";
444 $file{changes} += ($c =~ s/^$HS*#$HS*define$HS+NEED_$func\b.*$LF//mg);
448 for $func (sort keys %{$file{needed_global}}) {
450 if (not exists $global{uses}{$func}) {
451 $message = "No need to define NEED_${func}_GLOBAL if $func is never used";
453 elsif (exists $file{needs}{$func}) {
454 if ($file{needs}{$func} eq 'extern') {
455 $message = "No need to define NEED_${func}_GLOBAL when already needed globally";
457 elsif ($file{needs}{$func} eq 'static') {
458 $message = "No need to define NEED_${func}_GLOBAL when only used in this file";
463 $file{changes} += ($c =~ s/^$HS*#$HS*define$HS+NEED_${func}_GLOBAL\b.*$LF//mg);
467 $file{needs_inc_ppport} = keys %{$file{uses}};
469 if ($file{needs_inc_ppport}) {
472 for $func (sort keys %{$file{needs}}) {
473 my $type = $file{needs}{$func};
474 next if $type eq 'extern';
475 my $suffix = $type eq 'global' ? '_GLOBAL' : '';
476 unless (exists $file{"needed_$type"}{$func}) {
477 if ($type eq 'global') {
478 diag("Files [@{$global{needs}{$func}}] need $func, adding global request");
481 diag("File needs $func, adding static request");
483 $pp .= "#define NEED_$func$suffix\n";
487 if ($pp && ($c =~ s/^(?=$HS*#$HS*define$HS+NEED_\w+)/$pp/m)) {
492 unless ($file{has_inc_ppport}) {
493 diag("Needs to include '$ppport'");
494 $pp .= qq(#include "$ppport"\n)
498 $file{changes} += ($c =~ s/^($HS*#$HS*define$HS+NEED_\w+.*?)^/$1$pp/ms)
499 || ($c =~ s/^(?=$HS*#$HS*include.*\Q$ppport\E)/$pp/m)
500 || ($c =~ s/^($HS*#$HS*include.*XSUB.*\s*?)^/$1$pp/m)
505 if ($file{has_inc_ppport}) {
506 diag("No need to include '$ppport'");
507 $file{changes} += ($c =~ s/^$HS*?#$HS*include.*\Q$ppport\E.*?$LF//m);
511 # put back in our C comments
514 my @ccom = @{$file{ccom}};
515 for $ix (0 .. $#ccom) {
516 if (!$opt{cplusplus} && $ccom[$ix] =~ s!^//!!) {
518 $file{changes} += $c =~ s/$rccs$ix$rcce/$ccs$ccom[$ix] $cce/;
521 $c =~ s/$rccs$ix$rcce/$ccom[$ix]/;
526 my $s = $cppc != 1 ? 's' : '';
527 warning("Uses $cppc C++ style comment$s, which is not portable");
530 my $s = $warnings != 1 ? 's' : '';
531 my $warn = $warnings ? " ($warnings warning$s)" : '';
532 info("Analysis completed$warn");
534 if ($file{changes}) {
535 if (exists $opt{copy}) {
536 my $newfile = "$filename$opt{copy}";
538 error("'$newfile' already exists, refusing to write copy of '$filename'");
542 if (open F, ">$newfile") {
543 info("Writing copy of '$filename' with changes to '$newfile'");
548 error("Cannot open '$newfile' for writing: $!");
552 elsif (exists $opt{patch} || $opt{changes}) {
553 if (exists $opt{patch}) {
554 unless ($patch_opened) {
555 if (open PATCH, ">$opt{patch}") {
559 error("Cannot open '$opt{patch}' for writing: $!");
565 mydiff(\*PATCH, $filename, $c);
569 info("Suggested changes:");
570 mydiff(\*STDOUT, $filename, $c);
574 my $s = $file{changes} == 1 ? '' : 's';
575 info("$file{changes} potentially required change$s detected");
583 close PATCH if $patch_opened;
587 #######################################################################
589 sub try_use { eval "use @_;"; return $@ eq '' }
594 my($file, $str) = @_;
597 if (exists $opt{diff}) {
598 $diff = run_diff($opt{diff}, $file, $str);
601 if (!defined $diff and try_use('Text::Diff')) {
602 $diff = Text::Diff::diff($file, \$str, { STYLE => 'Unified' });
603 $diff = <<HEADER . $diff;
609 if (!defined $diff) {
610 $diff = run_diff('diff -u', $file, $str);
613 if (!defined $diff) {
614 $diff = run_diff('diff', $file, $str);
617 if (!defined $diff) {
618 error("Cannot generate a diff. Please install Text::Diff or use --copy.");
627 my($prog, $file, $str) = @_;
628 my $tmp = 'dppptemp';
633 while (-e "$tmp.$suf") { $suf++ }
636 if (open F, ">$tmp") {
640 if (open F, "$prog $file $tmp |") {
642 s/\Q$tmp\E/$file.patched/;
653 error("Cannot open '$tmp' for writing: $!");
661 my($func, $seen) = @_;
662 return () unless exists $depends{$func};
663 $seen = {%{$seen||{}}};
664 return () if $seen->{$func}++;
666 grep !$s{$_}++, map { ($_, rec_depend($_, $seen)) } @{$depends{$func}};
673 if ($ver =~ /^(\d+)\.(\d+)\.(\d+)$/) {
676 elsif ($ver !~ /^\d+\.[\d_]+$/) {
677 die "cannot parse version '$ver'\n";
683 my($r,$v,$s) = $ver =~ /(\d+)\.(\d{3})(\d{3})/;
688 if ($r < 5 || ($r == 5 && $v < 6)) {
690 die "cannot parse version '$ver'\n";
702 my($r,$v,$s) = $ver =~ /(\d+)\.(\d{3})(\d{3})/;
707 if ($r < 5 || ($r == 5 && $v < 6)) {
709 die "invalid version '$ver'\n";
713 $ver = sprintf "%d.%03d", $r, $v;
714 $s > 0 and $ver .= sprintf "_%02d", $s;
719 return sprintf "%d.%d.%d", $r, $v, $s;
724 $opt{quiet} and return;
730 $opt{quiet} and return;
731 $opt{diag} and print @_, "\n";
736 $opt{quiet} and return;
737 print "*** ", @_, "\n";
742 print "*** ERROR: ", @_, "\n";
749 $opt{quiet} and return;
752 if (exists $warnings{$func} && !$given_warnings{$func}++) {
753 my $warn = $warnings{$func};
754 $warn =~ s!^!*** !mg;
755 print "*** WARNING: $func\n", $warn;
758 if ($opt{hints} && exists $hints{$func} && !$given_hints{$func}++) {
759 my $hint = $hints{$func};
761 print " --- hint for $func ---\n", $hint;
768 my($usage) = do { local(@ARGV,$/)=($0); <> } =~ /^=head\d$HS+SYNOPSIS\s*^(.*?)\s*^=/ms;
769 my %M = ( 'I' => '*' );
770 $usage =~ s/^\s*perl\s+\S+/$^X $0/;
771 $usage =~ s/([A-Z])<([^>]+)>/$M{$1}$2$M{$1}/g;
777 See perldoc $0 for details.
786 my $self = do { local(@ARGV,$/)=($0); <> };
787 my($copy) = $self =~ /^=head\d\s+COPYRIGHT\s*^(.*?)^=\w+/ms;
788 $copy =~ s/^(?=\S+)/ /gms;
789 $self =~ s/^$HS+Do NOT edit.*?(?=^-)/$copy/ms;
790 $self =~ s/^SKIP.*(?=^__DATA__)/SKIP
791 if (\@ARGV && \$ARGV[0] eq '--unstrip') {
792 eval { require Devel::PPPort };
793 \$@ and die "Cannot require Devel::PPPort, please install.\\n";
794 if (eval \$Devel::PPPort::VERSION < $VERSION) {
795 die "$0 was originally generated with Devel::PPPort $VERSION.\\n"
796 . "Your Devel::PPPort is only version \$Devel::PPPort::VERSION.\\n"
797 . "Please install a newer version, or --unstrip will not work.\\n";
799 Devel::PPPort::WriteFile(\$0);
804 Sorry, but this is a stripped version of \$0.
806 To be able to use its original script and doc functionality,
807 please try to regenerate this file using:
813 my($pl, $c) = $self =~ /(.*^__DATA__)(.*)/ms;
815 / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]*)
816 | ( "[^"\\]*(?:\\.[^"\\]*)*"
817 | '[^'\\]*(?:\\.[^'\\]*)*' )
818 | ($HS+) }{ defined $2 ? ' ' : ($1 || '') }gsex;
821 $c =~ s!^\s*#\s*!#!mg;
824 open OUT, ">$0" or die "cannot strip $0: $!\n";