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Upgrade to Devel::PPPort 3.11_05
[p5sagit/p5-mst-13.2.git] / ext / Devel / PPPort / parts / inc / ppphbin
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adfe19db 1################################################################################
2##
c83e6f19 3## $Revision: 44 $
adfe19db 4## $Author: mhx $
c83e6f19 5## $Date: 2007/08/20 18:21:09 +0200 $
adfe19db 6##
7################################################################################
8##
d2dacc4f 9## Version 3.x, Copyright (C) 2004-2007, Marcus Holland-Moritz.
adfe19db 10## Version 2.x, Copyright (C) 2001, Paul Marquess.
11## Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
12##
13## This program is free software; you can redistribute it and/or
14## modify it under the same terms as Perl itself.
15##
16################################################################################
17
18=provides
19
20=implementation
21
adfe19db 22use strict;
23
c83e6f19 24# Disable broken TRIE-optimization
25BEGIN { eval '${^RE_TRIE_MAXBUF} = -1' if $] >= 5.009004 && $] <= 5.009005 }
26
78b4ff79 27my $VERSION = __VERSION__;
28
adfe19db 29my %opt = (
30 quiet => 0,
31 diag => 1,
32 hints => 1,
33 changes => 1,
34 cplusplus => 0,
4a582685 35 filter => 1,
0d0f8426 36 strip => 0,
78b4ff79 37 version => 0,
adfe19db 38);
39
40my($ppport) = $0 =~ /([\w.]+)$/;
41my $LF = '(?:\r\n|[\r\n])'; # line feed
42my $HS = "[ \t]"; # horizontal whitespace
43
c83e6f19 44# Never use C comments in this file!
45my $ccs = '/'.'*';
46my $cce = '*'.'/';
47my $rccs = quotemeta $ccs;
48my $rcce = quotemeta $cce;
49
adfe19db 50eval {
51 require Getopt::Long;
52 Getopt::Long::GetOptions(\%opt, qw(
78b4ff79 53 help quiet diag! filter! hints! changes! cplusplus strip version
adfe19db 54 patch=s copy=s diff=s compat-version=s
04fc8b94 55 list-provided list-unsupported api-info=s
adfe19db 56 )) or usage();
57};
58
59if ($@ and grep /^-/, @ARGV) {
60 usage() if "@ARGV" =~ /^--?h(?:elp)?$/;
61 die "Getopt::Long not found. Please don't use any options.\n";
62}
63
78b4ff79 64if ($opt{version}) {
65 print "This is $0 $VERSION.\n";
66 exit 0;
67}
68
adfe19db 69usage() if $opt{help};
0d0f8426 70strip() if $opt{strip};
adfe19db 71
72if (exists $opt{'compat-version'}) {
73 my($r,$v,$s) = eval { parse_version($opt{'compat-version'}) };
74 if ($@) {
75 die "Invalid version number format: '$opt{'compat-version'}'\n";
76 }
77 die "Only Perl 5 is supported\n" if $r != 5;
4a582685 78 die "Invalid version number: $opt{'compat-version'}\n" if $v >= 1000 || $s >= 1000;
adfe19db 79 $opt{'compat-version'} = sprintf "%d.%03d%03d", $r, $v, $s;
80}
81else {
82 $opt{'compat-version'} = 5;
83}
84
adfe19db 85my %API = map { /^(\w+)\|([^|]*)\|([^|]*)\|(\w*)$/
4a582685 86 ? ( $1 => {
adfe19db 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 ) : ()),
92 } )
93 : die "invalid spec: $_" } qw(
94__PERL_API__
95);
96
97if (exists $opt{'list-unsupported'}) {
98 my $f;
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";
102 }
103 exit 0;
104}
105
106# Scan for possible replacement candidates
107
679ad62d 108my(%replace, %need, %hints, %warnings, %depends);
adfe19db 109my $replace = 0;
679ad62d 110my($hint, $define, $function);
adfe19db 111
af36fda7 112sub find_api
113{
114 my $code = shift;
115 $code =~ s{
c83e6f19 116 / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]*)
117 | "[^"\\]*(?:\\.[^"\\]*)*"
118 | '[^'\\]*(?:\\.[^'\\]*)*' }{}egsx;
af36fda7 119 grep { exists $API{$_} } $code =~ /(\w+)/mg;
120}
121
adfe19db 122while (<DATA>) {
123 if ($hint) {
679ad62d 124 my $h = $hint->[0] eq 'Hint' ? \%hints : \%warnings;
adfe19db 125 if (m{^\s*\*\s(.*?)\s*$}) {
679ad62d 126 for (@{$hint->[1]}) {
127 $h->{$_} ||= ''; # suppress warning with older perls
128 $h->{$_} .= "$1\n";
129 }
130 }
c83e6f19 131 else { undef $hint }
679ad62d 132 }
133
c83e6f19 134 $hint = [$1, [split /,?\s+/, $2]]
135 if m{^\s*$rccs\s+(Hint|Warning):\s+(\w+(?:,?\s+\w+)*)\s*$};
679ad62d 136
137 if ($define) {
138 if ($define->[1] =~ /\\$/) {
139 $define->[1] .= $_;
140 }
141 else {
142 if (exists $API{$define->[0]} && $define->[1] !~ /^DPPP_\(/) {
af36fda7 143 my @n = find_api($define->[1]);
679ad62d 144 push @{$depends{$define->[0]}}, @n if @n
145 }
146 undef $define;
147 }
148 }
149
150 $define = [$1, $2] if m{^\s*#\s*define\s+(\w+)(?:\([^)]*\))?\s+(.*)};
151
152 if ($function) {
153 if (/^}/) {
154 if (exists $API{$function->[0]}) {
af36fda7 155 my @n = find_api($function->[1]);
679ad62d 156 push @{$depends{$function->[0]}}, @n if @n
157 }
158 undef $define;
adfe19db 159 }
160 else {
679ad62d 161 $function->[1] .= $_;
adfe19db 162 }
163 }
679ad62d 164
165 $function = [$1, ''] if m{^DPPP_\(my_(\w+)\)};
adfe19db 166
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+$rcce\s*$};
171
172 if (m{^\s*$rccs\s+(\w+)\s+depends\s+on\s+(\w+(\s*,\s*\w+)*)\s+$rcce\s*$}) {
173 push @{$depends{$1}}, map { s/\s+//g; $_ } split /,/, $2;
174 }
175
176 $need{$1} = 1 if m{^#if\s+defined\(NEED_(\w+)(?:_GLOBAL)?\)};
177}
178
679ad62d 179for (values %depends) {
180 my %s;
181 $_ = [sort grep !$s{$_}++, @$_];
182}
183
04fc8b94 184if (exists $opt{'api-info'}) {
185 my $f;
186 my $count = 0;
9132e1a3 187 my $match = $opt{'api-info'} =~ m!^/(.*)/$! ? $1 : "^\Q$opt{'api-info'}\E\$";
04fc8b94 188 for $f (sort { lc $a cmp lc $b } keys %API) {
9132e1a3 189 next unless $f =~ /$match/;
04fc8b94 190 print "\n=== $f ===\n\n";
191 my $info = 0;
192 if ($API{$f}{base} || $API{$f}{todo}) {
193 my $base = format_version($API{$f}{base} || $API{$f}{todo});
9132e1a3 194 print "Supported at least starting from perl-$base.\n";
04fc8b94 195 $info++;
196 }
197 if ($API{$f}{provided}) {
198 my $todo = $API{$f}{todo} ? format_version($API{$f}{todo}) : "__MIN_PERL__";
9132e1a3 199 print "Support by $ppport provided back to perl-$todo.\n";
04fc8b94 200 print "Support needs to be explicitly requested by NEED_$f.\n" if exists $need{$f};
201 print "Depends on: ", join(', ', @{$depends{$f}}), ".\n" if exists $depends{$f};
679ad62d 202 print "\n$hints{$f}" if exists $hints{$f};
203 print "\nWARNING:\n$warnings{$f}" if exists $warnings{$f};
04fc8b94 204 $info++;
205 }
c83e6f19 206 print "No portability information available.\n" unless $info;
04fc8b94 207 $count++;
208 }
c83e6f19 209 $count or print "Found no API matching '$opt{'api-info'}'.";
210 print "\n";
04fc8b94 211 exit 0;
212}
213
adfe19db 214if (exists $opt{'list-provided'}) {
215 my $f;
216 for $f (sort { lc $a cmp lc $b } keys %API) {
217 next unless $API{$f}{provided};
218 my @flags;
219 push @flags, 'explicit' if exists $need{$f};
220 push @flags, 'depend' if exists $depends{$f};
221 push @flags, 'hint' if exists $hints{$f};
679ad62d 222 push @flags, 'warning' if exists $warnings{$f};
adfe19db 223 my $flags = @flags ? ' ['.join(', ', @flags).']' : '';
224 print "$f$flags\n";
225 }
226 exit 0;
227}
228
4a582685 229my @files;
679ad62d 230my @srcext = qw( .xs .c .h .cc .cpp -c.inc -xs.inc );
231my $srcext = join '|', map { quotemeta $_ } @srcext;
4a582685 232
233if (@ARGV) {
234 my %seen;
679ad62d 235 for (@ARGV) {
236 if (-e) {
237 if (-f) {
238 push @files, $_ unless $seen{$_}++;
239 }
240 else { warn "'$_' is not a file.\n" }
241 }
242 else {
243 my @new = grep { -f } glob $_
244 or warn "'$_' does not exist.\n";
245 push @files, grep { !$seen{$_}++ } @new;
246 }
247 }
4a582685 248}
249else {
250 eval {
251 require File::Find;
252 File::Find::find(sub {
679ad62d 253 $File::Find::name =~ /($srcext)$/i
4a582685 254 and push @files, $File::Find::name;
255 }, '.');
256 };
257 if ($@) {
679ad62d 258 @files = map { glob "*$_" } @srcext;
4a582685 259 }
260}
261
262if (!@ARGV || $opt{filter}) {
263 my(@in, @out);
264 my %xsc = map { /(.*)\.xs$/ ? ("$1.c" => 1, "$1.cc" => 1) : () } @files;
265 for (@files) {
679ad62d 266 my $out = exists $xsc{$_} || /\b\Q$ppport\E$/i || !/($srcext)$/i;
4a582685 267 push @{ $out ? \@out : \@in }, $_;
268 }
269 if (@ARGV && @out) {
270 warning("Skipping the following files (use --nofilter to avoid this):\n| ", join "\n| ", @out);
271 }
272 @files = @in;
273}
274
c83e6f19 275die "No input files given!\n" unless @files;
4a582685 276
adfe19db 277my(%files, %global, %revreplace);
278%revreplace = reverse %replace;
279my $filename;
280my $patch_opened = 0;
281
282for $filename (@files) {
283 unless (open IN, "<$filename") {
284 warn "Unable to read from $filename: $!\n";
285 next;
286 }
287
288 info("Scanning $filename ...");
289
290 my $c = do { local $/; <IN> };
291 close IN;
292
293 my %file = (orig => $c, changes => 0);
294
c83e6f19 295 # Temporarily remove C/XS comments and strings from the code
adfe19db 296 my @ccom;
c83e6f19 297
adfe19db 298 $c =~ s{
c83e6f19 299 ( ^$HS*\#$HS*include\b[^\r\n]+\b(?:\Q$ppport\E|XSUB\.h)\b[^\r\n]*
300 | ^$HS*\#$HS*(?:define|elif|if(?:def)?)\b[^\r\n]* )
301 | ( ^$HS*\#[^\r\n]*
302 | "[^"\\]*(?:\\.[^"\\]*)*"
303 | '[^'\\]*(?:\\.[^'\\]*)*'
304 | / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]* ) )
af36fda7 305 }{ defined $2 and push @ccom, $2;
c83e6f19 306 defined $1 ? $1 : "$ccs$#ccom$cce" }mgsex;
adfe19db 307
308 $file{ccom} = \@ccom;
309 $file{code} = $c;
c83e6f19 310 $file{has_inc_ppport} = $c =~ /^$HS*#$HS*include[^\r\n]+\b\Q$ppport\E\b/m;
adfe19db 311
312 my $func;
313
314 for $func (keys %API) {
315 my $match = $func;
316 $match .= "|$revreplace{$func}" if exists $revreplace{$func};
317 if ($c =~ /\b(?:Perl_)?($match)\b/) {
318 $file{uses_replace}{$1}++ if exists $revreplace{$func} && $1 eq $revreplace{$func};
319 $file{uses_Perl}{$func}++ if $c =~ /\bPerl_$func\b/;
320 if (exists $API{$func}{provided}) {
679ad62d 321 $file{uses_provided}{$func}++;
adfe19db 322 if (!exists $API{$func}{base} || $API{$func}{base} > $opt{'compat-version'}) {
323 $file{uses}{$func}++;
adfe19db 324 my @deps = rec_depend($func);
325 if (@deps) {
326 $file{uses_deps}{$func} = \@deps;
327 for (@deps) {
328 $file{uses}{$_} = 0 unless exists $file{uses}{$_};
adfe19db 329 }
330 }
331 for ($func, @deps) {
c83e6f19 332 $file{needs}{$_} = 'static' if exists $need{$_};
adfe19db 333 }
334 }
335 }
336 if (exists $API{$func}{todo} && $API{$func}{todo} > $opt{'compat-version'}) {
337 if ($c =~ /\b$func\b/) {
338 $file{uses_todo}{$func}++;
adfe19db 339 }
340 }
341 }
342 }
343
344 while ($c =~ /^$HS*#$HS*define$HS+(NEED_(\w+?)(_GLOBAL)?)\b/mg) {
345 if (exists $need{$2}) {
346 $file{defined $3 ? 'needed_global' : 'needed_static'}{$2}++;
adfe19db 347 }
c83e6f19 348 else { warning("Possibly wrong #define $1 in $filename") }
adfe19db 349 }
350
96ad942f 351 for (qw(uses needs uses_todo needed_global needed_static)) {
352 for $func (keys %{$file{$_}}) {
353 push @{$global{$_}{$func}}, $filename;
354 }
355 }
356
adfe19db 357 $files{$filename} = \%file;
358}
359
360# Globally resolve NEED_'s
361my $need;
362for $need (keys %{$global{needs}}) {
363 if (@{$global{needs}{$need}} > 1) {
364 my @targets = @{$global{needs}{$need}};
365 my @t = grep $files{$_}{needed_global}{$need}, @targets;
366 @targets = @t if @t;
367 @t = grep /\.xs$/i, @targets;
368 @targets = @t if @t;
369 my $target = shift @targets;
370 $files{$target}{needs}{$need} = 'global';
371 for (@{$global{needs}{$need}}) {
372 $files{$_}{needs}{$need} = 'extern' if $_ ne $target;
373 }
374 }
375}
376
377for $filename (@files) {
378 exists $files{$filename} or next;
379
380 info("=== Analyzing $filename ===");
381
382 my %file = %{$files{$filename}};
383 my $func;
384 my $c = $file{code};
679ad62d 385 my $warnings = 0;
adfe19db 386
387 for $func (sort keys %{$file{uses_Perl}}) {
388 if ($API{$func}{varargs}) {
389 my $changes = ($c =~ s{\b(Perl_$func\s*\(\s*)(?!aTHX_?)(\)|[^\s)]*\))}
390 { $1 . ($2 eq ')' ? 'aTHX' : 'aTHX_ ') . $2 }ge);
391 if ($changes) {
392 warning("Doesn't pass interpreter argument aTHX to Perl_$func");
393 $file{changes} += $changes;
394 }
395 }
396 else {
397 warning("Uses Perl_$func instead of $func");
398 $file{changes} += ($c =~ s{\bPerl_$func(\s*)\((\s*aTHX_?)?\s*}
399 {$func$1(}g);
400 }
401 }
402
403 for $func (sort keys %{$file{uses_replace}}) {
404 warning("Uses $func instead of $replace{$func}");
405 $file{changes} += ($c =~ s/\b$func\b/$replace{$func}/g);
406 }
407
679ad62d 408 for $func (sort keys %{$file{uses_provided}}) {
409 if ($file{uses}{$func}) {
410 if (exists $file{uses_deps}{$func}) {
411 diag("Uses $func, which depends on ", join(', ', @{$file{uses_deps}{$func}}));
412 }
413 else {
414 diag("Uses $func");
415 }
adfe19db 416 }
679ad62d 417 $warnings += hint($func);
adfe19db 418 }
419
679ad62d 420 unless ($opt{quiet}) {
421 for $func (sort keys %{$file{uses_todo}}) {
422 print "*** WARNING: Uses $func, which may not be portable below perl ",
423 format_version($API{$func}{todo}), ", even with '$ppport'\n";
424 $warnings++;
425 }
adfe19db 426 }
427
428 for $func (sort keys %{$file{needed_static}}) {
429 my $message = '';
430 if (not exists $file{uses}{$func}) {
431 $message = "No need to define NEED_$func if $func is never used";
432 }
433 elsif (exists $file{needs}{$func} && $file{needs}{$func} ne 'static') {
434 $message = "No need to define NEED_$func when already needed globally";
435 }
436 if ($message) {
437 diag($message);
438 $file{changes} += ($c =~ s/^$HS*#$HS*define$HS+NEED_$func\b.*$LF//mg);
439 }
440 }
441
442 for $func (sort keys %{$file{needed_global}}) {
443 my $message = '';
444 if (not exists $global{uses}{$func}) {
445 $message = "No need to define NEED_${func}_GLOBAL if $func is never used";
446 }
447 elsif (exists $file{needs}{$func}) {
448 if ($file{needs}{$func} eq 'extern') {
449 $message = "No need to define NEED_${func}_GLOBAL when already needed globally";
450 }
451 elsif ($file{needs}{$func} eq 'static') {
452 $message = "No need to define NEED_${func}_GLOBAL when only used in this file";
453 }
454 }
455 if ($message) {
456 diag($message);
457 $file{changes} += ($c =~ s/^$HS*#$HS*define$HS+NEED_${func}_GLOBAL\b.*$LF//mg);
458 }
459 }
460
461 $file{needs_inc_ppport} = keys %{$file{uses}};
462
463 if ($file{needs_inc_ppport}) {
464 my $pp = '';
465
466 for $func (sort keys %{$file{needs}}) {
467 my $type = $file{needs}{$func};
468 next if $type eq 'extern';
469 my $suffix = $type eq 'global' ? '_GLOBAL' : '';
470 unless (exists $file{"needed_$type"}{$func}) {
471 if ($type eq 'global') {
472 diag("Files [@{$global{needs}{$func}}] need $func, adding global request");
473 }
474 else {
475 diag("File needs $func, adding static request");
476 }
477 $pp .= "#define NEED_$func$suffix\n";
478 }
479 }
480
481 if ($pp && ($c =~ s/^(?=$HS*#$HS*define$HS+NEED_\w+)/$pp/m)) {
482 $pp = '';
483 $file{changes}++;
484 }
485
486 unless ($file{has_inc_ppport}) {
487 diag("Needs to include '$ppport'");
488 $pp .= qq(#include "$ppport"\n)
489 }
490
491 if ($pp) {
492 $file{changes} += ($c =~ s/^($HS*#$HS*define$HS+NEED_\w+.*?)^/$1$pp/ms)
493 || ($c =~ s/^(?=$HS*#$HS*include.*\Q$ppport\E)/$pp/m)
494 || ($c =~ s/^($HS*#$HS*include.*XSUB.*\s*?)^/$1$pp/m)
495 || ($c =~ s/^/$pp/);
496 }
497 }
498 else {
499 if ($file{has_inc_ppport}) {
500 diag("No need to include '$ppport'");
501 $file{changes} += ($c =~ s/^$HS*?#$HS*include.*\Q$ppport\E.*?$LF//m);
502 }
503 }
504
505 # put back in our C comments
506 my $ix;
507 my $cppc = 0;
508 my @ccom = @{$file{ccom}};
509 for $ix (0 .. $#ccom) {
510 if (!$opt{cplusplus} && $ccom[$ix] =~ s!^//!!) {
511 $cppc++;
512 $file{changes} += $c =~ s/$rccs$ix$rcce/$ccs$ccom[$ix] $cce/;
513 }
514 else {
515 $c =~ s/$rccs$ix$rcce/$ccom[$ix]/;
516 }
517 }
518
519 if ($cppc) {
520 my $s = $cppc != 1 ? 's' : '';
521 warning("Uses $cppc C++ style comment$s, which is not portable");
522 }
523
679ad62d 524 my $s = $warnings != 1 ? 's' : '';
525 my $warn = $warnings ? " ($warnings warning$s)" : '';
526 info("Analysis completed$warn");
527
adfe19db 528 if ($file{changes}) {
529 if (exists $opt{copy}) {
530 my $newfile = "$filename$opt{copy}";
531 if (-e $newfile) {
532 error("'$newfile' already exists, refusing to write copy of '$filename'");
533 }
534 else {
535 local *F;
536 if (open F, ">$newfile") {
537 info("Writing copy of '$filename' with changes to '$newfile'");
538 print F $c;
539 close F;
540 }
541 else {
542 error("Cannot open '$newfile' for writing: $!");
543 }
544 }
545 }
546 elsif (exists $opt{patch} || $opt{changes}) {
547 if (exists $opt{patch}) {
548 unless ($patch_opened) {
549 if (open PATCH, ">$opt{patch}") {
550 $patch_opened = 1;
551 }
552 else {
553 error("Cannot open '$opt{patch}' for writing: $!");
554 delete $opt{patch};
555 $opt{changes} = 1;
556 goto fallback;
557 }
558 }
559 mydiff(\*PATCH, $filename, $c);
560 }
561 else {
562fallback:
563 info("Suggested changes:");
564 mydiff(\*STDOUT, $filename, $c);
565 }
566 }
567 else {
568 my $s = $file{changes} == 1 ? '' : 's';
569 info("$file{changes} potentially required change$s detected");
570 }
571 }
572 else {
573 info("Looks good");
574 }
575}
576
577close PATCH if $patch_opened;
578
579exit 0;
580
581#######################################################################
582
c83e6f19 583sub try_use { eval "use @_;"; return $@ eq '' }
584
adfe19db 585sub mydiff
586{
587 local *F = shift;
588 my($file, $str) = @_;
589 my $diff;
590
591 if (exists $opt{diff}) {
592 $diff = run_diff($opt{diff}, $file, $str);
593 }
594
c83e6f19 595 if (!defined $diff and try_use('Text::Diff')) {
adfe19db 596 $diff = Text::Diff::diff($file, \$str, { STYLE => 'Unified' });
597 $diff = <<HEADER . $diff;
598--- $file
599+++ $file.patched
600HEADER
601 }
602
603 if (!defined $diff) {
604 $diff = run_diff('diff -u', $file, $str);
605 }
606
607 if (!defined $diff) {
608 $diff = run_diff('diff', $file, $str);
609 }
610
611 if (!defined $diff) {
612 error("Cannot generate a diff. Please install Text::Diff or use --copy.");
613 return;
614 }
615
616 print F $diff;
adfe19db 617}
618
619sub run_diff
620{
621 my($prog, $file, $str) = @_;
622 my $tmp = 'dppptemp';
623 my $suf = 'aaa';
624 my $diff = '';
625 local *F;
626
627 while (-e "$tmp.$suf") { $suf++ }
628 $tmp = "$tmp.$suf";
629
630 if (open F, ">$tmp") {
631 print F $str;
632 close F;
633
634 if (open F, "$prog $file $tmp |") {
635 while (<F>) {
636 s/\Q$tmp\E/$file.patched/;
637 $diff .= $_;
638 }
639 close F;
640 unlink $tmp;
641 return $diff;
642 }
643
644 unlink $tmp;
645 }
646 else {
647 error("Cannot open '$tmp' for writing: $!");
648 }
649
650 return undef;
651}
652
adfe19db 653sub rec_depend
654{
af36fda7 655 my($func, $seen) = @_;
adfe19db 656 return () unless exists $depends{$func};
af36fda7 657 $seen = {%{$seen||{}}};
658 return () if $seen->{$func}++;
659 my %s;
660 grep !$s{$_}++, map { ($_, rec_depend($_, $seen)) } @{$depends{$func}};
adfe19db 661}
662
663sub parse_version
664{
665 my $ver = shift;
666
667 if ($ver =~ /^(\d+)\.(\d+)\.(\d+)$/) {
668 return ($1, $2, $3);
669 }
670 elsif ($ver !~ /^\d+\.[\d_]+$/) {
671 die "cannot parse version '$ver'\n";
672 }
673
674 $ver =~ s/_//g;
675 $ver =~ s/$/000000/;
676
677 my($r,$v,$s) = $ver =~ /(\d+)\.(\d{3})(\d{3})/;
678
679 $v = int $v;
680 $s = int $s;
681
682 if ($r < 5 || ($r == 5 && $v < 6)) {
683 if ($s % 10) {
684 die "cannot parse version '$ver'\n";
685 }
686 }
687
688 return ($r, $v, $s);
689}
690
691sub format_version
692{
693 my $ver = shift;
694
695 $ver =~ s/$/000000/;
696 my($r,$v,$s) = $ver =~ /(\d+)\.(\d{3})(\d{3})/;
697
698 $v = int $v;
699 $s = int $s;
700
701 if ($r < 5 || ($r == 5 && $v < 6)) {
702 if ($s % 10) {
703 die "invalid version '$ver'\n";
704 }
705 $s /= 10;
706
707 $ver = sprintf "%d.%03d", $r, $v;
708 $s > 0 and $ver .= sprintf "_%02d", $s;
709
710 return $ver;
711 }
712
713 return sprintf "%d.%d.%d", $r, $v, $s;
714}
715
716sub info
717{
718 $opt{quiet} and return;
719 print @_, "\n";
720}
721
722sub diag
723{
724 $opt{quiet} and return;
725 $opt{diag} and print @_, "\n";
726}
727
728sub warning
729{
730 $opt{quiet} and return;
731 print "*** ", @_, "\n";
732}
733
734sub error
735{
736 print "*** ERROR: ", @_, "\n";
737}
738
739my %given_hints;
679ad62d 740my %given_warnings;
adfe19db 741sub hint
742{
743 $opt{quiet} and return;
adfe19db 744 my $func = shift;
679ad62d 745 my $rv = 0;
746 if (exists $warnings{$func} && !$given_warnings{$func}++) {
747 my $warn = $warnings{$func};
748 $warn =~ s!^!*** !mg;
749 print "*** WARNING: $func\n", $warn;
750 $rv++;
751 }
752 if ($opt{hints} && exists $hints{$func} && !$given_hints{$func}++) {
753 my $hint = $hints{$func};
754 $hint =~ s/^/ /mg;
755 print " --- hint for $func ---\n", $hint;
756 }
757 $rv;
adfe19db 758}
759
760sub usage
761{
762 my($usage) = do { local(@ARGV,$/)=($0); <> } =~ /^=head\d$HS+SYNOPSIS\s*^(.*?)\s*^=/ms;
763 my %M = ( 'I' => '*' );
764 $usage =~ s/^\s*perl\s+\S+/$^X $0/;
765 $usage =~ s/([A-Z])<([^>]+)>/$M{$1}$2$M{$1}/g;
766
767 print <<ENDUSAGE;
768
769Usage: $usage
770
771See perldoc $0 for details.
772
773ENDUSAGE
774
775 exit 2;
776}
0d0f8426 777
778sub strip
779{
780 my $self = do { local(@ARGV,$/)=($0); <> };
78b4ff79 781 my($copy) = $self =~ /^=head\d\s+COPYRIGHT\s*^(.*?)^=\w+/ms;
782 $copy =~ s/^(?=\S+)/ /gms;
783 $self =~ s/^$HS+Do NOT edit.*?(?=^-)/$copy/ms;
0d0f8426 784 $self =~ s/^SKIP.*(?=^__DATA__)/SKIP
785if (\@ARGV && \$ARGV[0] eq '--unstrip') {
786 eval { require Devel::PPPort };
787 \$@ and die "Cannot require Devel::PPPort, please install.\\n";
78b4ff79 788 if (\$Devel::PPPort::VERSION < $VERSION) {
789 die "$0 was originally generated with Devel::PPPort $VERSION.\\n"
790 . "Your Devel::PPPort is only version \$Devel::PPPort::VERSION.\\n"
791 . "Please install a newer version, or --unstrip will not work.\\n";
792 }
0d0f8426 793 Devel::PPPort::WriteFile(\$0);
794 exit 0;
795}
796print <<END;
797
798Sorry, but this is a stripped version of \$0.
799
800To be able to use its original script and doc functionality,
801please try to regenerate this file using:
802
803 \$^X \$0 --unstrip
804
805END
806/ms;
c83e6f19 807 my($pl, $c) = $self =~ /(.*^__DATA__)(.*)/ms;
808 $c =~ s{
809 / (?: \*[^*]*\*+(?:[^$ccs][^*]*\*+)* / | /[^\r\n]*)
810 | ( "[^"\\]*(?:\\.[^"\\]*)*"
811 | '[^'\\]*(?:\\.[^'\\]*)*' )
812 | ($HS+) }{ defined $2 ? ' ' : ($1 || '') }gsex;
813 $c =~ s!\s+$!!mg;
814 $c =~ s!^$LF!!mg;
815 $c =~ s!^\s*#\s*!#!mg;
816 $c =~ s!^\s+!!mg;
0d0f8426 817
818 open OUT, ">$0" or die "cannot strip $0: $!\n";
c83e6f19 819 print OUT "$pl$c\n";
0d0f8426 820
821 exit 0;
822}
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