4 use File::Basename qw(basename dirname);
7 # List explicitly here the variables you want Configure to
8 # generate. Metaconfig only looks for shell variables, so you
9 # have to mention them as if they were shell variables, not
10 # %Config entries. Thus you write
12 # to ensure Configure will look for $Config{startperl}.
15 # This forces PL files to create target in same directory as PL file.
16 # This is so that make depend always knows where to find PL derivatives.
19 $file = basename($0, '.PL');
20 $file .= '.com' if $^O eq 'VMS';
22 open OUT,">$file" or die "Can't create $file: $!";
24 print "Extracting $file (with variable substitutions)\n";
26 # In this section, perl variables will be expanded during extraction.
27 # You can use $Config{...} to use Configure variables.
29 print OUT <<"!GROK!THIS!";
31 eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
32 if \$running_under_some_shell;
35 # In the following, perl variables are not expanded during extraction.
37 print OUT <<'!NO!SUBS!';
40 use File::Path qw(mkpath);
44 die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
45 @inc_dirs = inc_dirs() if $opt_a;
49 my $Dest_dir = $opt_d || $Config{installsitearch};
50 die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
53 @isatype = split(' ',<<END);
61 @isatype{@isatype} = (1) x @isatype;
64 @ARGV = ('-') unless @ARGV;
66 while (defined ($file = next_file())) {
67 if (-l $file and -d $file) {
68 link_if_possible($file) if ($opt_l);
72 # Recover from header files with unbalanced cpp directives
76 # $eval_index goes into ``#line'' directives, to help locate syntax errors:
83 ($outfile = $file) =~ s/\.h$/.ph/ || next;
84 print "$file -> $outfile\n";
85 if ($file =~ m|^(.*)/|) {
87 mkpath "$Dest_dir/$dir";
90 if ($opt_a) { # automagic mode: locate header file in @inc_dirs
97 open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);
98 open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";
107 print OUT "# $_\n" if $opt_D;
110 s/\200[^\201]*\201//g; # delete single line comments
111 if (s/\200.*//) { # begin multi-line comment?
118 if (s/^define\s+(\w+)//) {
122 if (s/^\(([\w,\s]*)\)//) {
127 foreach $arg (split(/,\s*/,$args)) {
128 $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;
131 $args =~ s/\b(\w)/\$$1/g;
132 $args = "local($args) = \@_;\n$t ";
136 $new =~ s/(["\\])/\\$1/g; #"]);
137 $new = reindent($new);
138 $args = reindent($args);
140 $new =~ s/(['\\])/\\$1/g; #']);
143 "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
147 "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
150 print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n";
156 $new = 1 if $new eq '';
157 $new = reindent($new);
158 $args = reindent($args);
160 $new =~ s/(['\\])/\\$1/g; #']);
162 print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n";
165 print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n";
168 print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
171 } elsif (/^(include|import)\s*[<"](.*)[>"]/) {
172 ($incl = $2) =~ s/\.h$/.ph/;
173 print OUT $t,"require '$incl';\n";
174 } elsif(/^include_next\s*[<"](.*)[>"]/) {
175 ($incl = $1) =~ s/\.h$/.ph/;
179 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
181 "my(\%INCD) = map { \$INC{\$_} => 1 } ",
182 "(grep { \$_ eq \"$incl\" } keys(\%INC));\n");
184 "my(\@REM) = map { \"\$_/$incl\" } ",
185 "(grep { not exists(\$INCD{\"\$_/$incl\"})",
186 "and -f \"\$_/$incl\" } \@INC);\n");
188 "require \"\$REM[0]\" if \@REM;\n");
190 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
194 "warn(\$\@) if \$\@;\n");
195 } elsif (/^ifdef\s+(\w+)/) {
196 print OUT $t,"if(defined(&$1)) {\n";
198 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
199 } elsif (/^ifndef\s+(\w+)/) {
200 print OUT $t,"unless(defined(&$1)) {\n";
202 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
203 } elsif (s/^if\s+//) {
208 print OUT $t,"if($new) {\n";
210 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
211 } elsif (s/^elif\s+//) {
217 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
218 print OUT $t,"}\n elsif($new) {\n";
220 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
223 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
224 print OUT $t,"} else {\n";
226 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
229 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
231 } elsif(/^undef\s+(\w+)/) {
232 print OUT $t, "undef(&$1) if defined(&$1);\n";
233 } elsif(/^error\s+(.*)/) {
234 print OUT $t, "die(\"$1\");\n";
235 } elsif(/^warning\s+(.*)/) {
236 print OUT $t, "warn(\"$1\");\n";
237 } elsif(/^ident\s+(.*)/) {
238 print OUT $t, "# $1\n";
240 } elsif(/^\s*(typedef\s*)?enum\b/) {
244 print OUT "# $next\n" if $opt_D;
248 /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
249 ($enum_subs = $3) =~ s/\s//g;
250 @enum_subs = split(/,/, $enum_subs);
252 for $enum (@enum_subs) {
253 ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
254 $enum_value =~ s/^=//;
255 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
258 "eval(\"\\n#line $eval_index $outfile\\n",
259 "sub $enum_name () \{ $enum_val; \}\") ",
260 "unless defined(\&$enum_name);\n");
264 "eval(\"sub $enum_name () \{ $enum_val; \}\") ",
265 "unless defined(\&$enum_name);\n");
272 $is_converted{$file} = 1;
273 queue_includes_from($file) if ($opt_a);
287 my($joined_args) = join('|', keys(%curargs));
290 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
291 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
292 s/^(\s+)// && do {$new .= ' '; next;};
293 s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;};
294 s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;};
295 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
296 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
297 s/^'((\\"|[^"])*)'// && do {
299 $new .= "ord('\$$1')";
305 # replace "sizeof(foo)" with "{foo}"
306 # also, remove * (C dereference operator) to avoid perl syntax
307 # problems. Where the %sizeof array comes from is anyone's
308 # guess (c2ph?), but this at least avoids fatal syntax errors.
309 # Behavior is undefined if sizeof() delimiters are unbalanced.
310 # This code was modified to able to handle constructs like this:
311 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
312 s/^sizeof\s*\(// && do {
314 my $lvl = 1; # already saw one open paren
315 # tack { on the front, and skip it in the loop
318 # find balanced closing paren
319 while ($index <= length($_) && $lvl > 0) {
320 $lvl++ if substr($_, $index, 1) eq "(";
321 $lvl-- if substr($_, $index, 1) eq ")";
324 # tack } on the end, replacing )
325 substr($_, $index - 1, 1) = "}";
326 # remove pesky * operators within the sizeof argument
327 substr($_, 0, $index - 1) =~ s/\*//g;
331 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
332 foreach (split /\s+/, $1) { # Make sure all the words are types,
333 last unless ($isatype{$_} or $_ eq 'struct');
335 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
337 # struct/union member, including arrays:
338 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
340 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
341 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
342 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
345 if(exists($curargs{$index})) {
350 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
354 s/^([_a-zA-Z]\w*)// && do {
356 if ($id eq 'struct') {
360 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
361 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
366 $new .= '->' if /^[\[\{]/;
367 } elsif ($id eq 'defined') {
370 s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
372 } elsif ($isatype{$id}) {
373 if ($new =~ /{\s*$/) {
375 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
379 $new .= q(').$id.q(');
382 if ($inif && $new !~ /defined\s*\($/) {
383 $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
392 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
397 # Handle recursive subdirectories without getting a grotesquely big stack.
398 # Could this be implemented using File::Find?
406 if ($file eq '-' or -f $file or -l $file) {
412 print STDERR "Skipping directory `$file'\n";
417 print STDERR "Skipping `$file': not a file or directory\n";
425 # Put all the files in $directory into @ARGV for processing.
428 my ($directory) = @_;
430 $directory =~ s:/$::;
432 opendir DIR, $directory;
433 foreach (readdir DIR) {
434 next if ($_ eq '.' or $_ eq '..');
436 # expand_glob() is going to be called until $ARGV[0] isn't a
437 # directory; so push directories, and unshift everything else.
438 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
439 else { unshift @ARGV, "$directory/$_" }
445 # Given $file, a symbolic link to a directory in the C include directory,
446 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
447 # Otherwise, just duplicate the file or directory.
451 my $target = eval 'readlink($dirlink)';
453 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
454 # The target of a parent or absolute link could leave the $Dest_dir
455 # hierarchy, so let's put all of the contents of $dirlink (actually,
456 # the contents of $target) into @ARGV; as a side effect down the
457 # line, $dirlink will get created as an _actual_ directory.
458 expand_glob($dirlink);
460 if (-l "$Dest_dir/$dirlink") {
461 unlink "$Dest_dir/$dirlink" or
462 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
465 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
466 print "Linking $target -> $Dest_dir/$dirlink\n";
468 # Make sure that the link _links_ to something:
469 if (! -e "$Dest_dir/$target") {
470 mkpath("$Dest_dir/$target", 0755) or
471 print STDERR "Could not create $Dest_dir/$target/\n";
474 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
480 # Push all #included files in $file onto our stack, except for STDIN
481 # and files we've already processed.
482 sub queue_includes_from
487 return if ($file eq "-");
489 open HEADER, $file or return;
490 while (defined($line = <HEADER>)) {
491 while (/\\$/) { # Handle continuation lines
496 if ($line =~ /^#\s*include\s+<(.*?)>/) {
497 push(@ARGV, $1) unless $is_converted{$1};
504 # Determine include directories; $Config{usrinc} should be enough for (all
505 # non-GCC?) C compilers, but gcc uses an additional include directory.
508 my $from_gcc = `$Config{cc} -v 2>&1`;
509 $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
511 length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
517 ##############################################################################
522 h2ph - convert .h C header files to .ph Perl header files
526 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
531 converts any C header files specified to the corresponding Perl header file
533 It is most easily run while in /usr/include:
535 cd /usr/include; h2ph * sys/*
539 cd /usr/include; h2ph -r -l .
541 The output files are placed in the hierarchy rooted at Perl's
542 architecture dependent library directory. You can specify a different
543 hierarchy with a B<-d> switch.
545 If run with no arguments, filters standard input to standard output.
551 =item -d destination_dir
553 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
554 beneath the default Perl library location (C<$Config{'installsitsearch'}>).
558 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
559 on all files in those directories (and their subdirectories, etc.). B<-r>
560 and B<-a> are mutually exclusive.
564 Run automagically; convert B<headerfiles>, as well as any B<.h> files
565 which they include. This option will search for B<.h> files in all
566 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
571 Symbolic links will be replicated in the destination directory. If B<-l>
572 is not specified, then links are skipped over.
576 Put ``hints'' in the .ph files which will help in locating problems with
577 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
578 errors, instead of the cryptic
580 [ some error condition ] at (eval mmm) line nnn
582 you will see the slightly more helpful
584 [ some error condition ] at filename.ph line nnn
586 However, the B<.ph> files almost double in size when built using B<-h>.
590 Include the code from the B<.h> file as a comment in the B<.ph> file.
591 This is primarily used for debugging I<h2ph>.
597 No environment variables are used.
616 The usual warnings if it can't read or write the files involved.
620 Doesn't construct the %sizeof array for you.
622 It doesn't handle all C constructs, but it does attempt to isolate
623 definitions inside evals so that you can get at the definitions
624 that it can translate.
626 It's only intended as a rough tool.
627 You may need to dicker with the files produced.
633 close OUT or die "Can't close $file: $!";
634 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
635 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';