4 use File::Basename qw(basename dirname);
6 # List explicitly here the variables you want Configure to
7 # generate. Metaconfig only looks for shell variables, so you
8 # have to mention them as if they were shell variables, not
9 # %Config entries. Thus you write
11 # to ensure Configure will look for $Config{startperl}.
14 # This forces PL files to create target in same directory as PL file.
15 # This is so that make depend always knows where to find PL derivatives.
17 $file = basename($0, '.PL');
18 $file .= '.com' if $^O eq 'VMS';
20 open OUT,">$file" or die "Can't create $file: $!";
22 print "Extracting $file (with variable substitutions)\n";
24 # In this section, perl variables will be expanded during extraction.
25 # You can use $Config{...} to use Configure variables.
27 print OUT <<"!GROK!THIS!";
29 eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
30 if \$running_under_some_shell;
33 # In the following, perl variables are not expanded during extraction.
35 print OUT <<'!NO!SUBS!';
38 use File::Path qw(mkpath);
42 die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
43 @inc_dirs = inc_dirs() if $opt_a;
47 my $Dest_dir = $opt_d || $Config{installsitearch};
48 die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
51 @isatype = split(' ',<<END);
59 @isatype{@isatype} = (1) x @isatype;
62 @ARGV = ('-') unless @ARGV;
64 while (defined ($file = next_file())) {
65 if (-l $file and -d $file) {
66 link_if_possible($file) if ($opt_l);
70 # Recover from header files with unbalanced cpp directives
74 # $eval_index goes into ``#line'' directives, to help locate syntax errors:
81 ($outfile = $file) =~ s/\.h$/.ph/ || next;
82 print "$file -> $outfile\n";
83 if ($file =~ m|^(.*)/|) {
85 mkpath "$Dest_dir/$dir";
88 if ($opt_a) { # automagic mode: locate header file in @inc_dirs
95 open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);
96 open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";
105 print OUT "# $_\n" if $opt_D;
108 s/\200[^\201]*\201//g; # delete single line comments
109 if (s/\200.*//) { # begin multi-line comment?
116 if (s/^define\s+(\w+)//) {
120 if (s/^\(([\w,\s]*)\)//) {
125 foreach $arg (split(/,\s*/,$args)) {
126 $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;
129 $args =~ s/\b(\w)/\$$1/g;
130 $args = "local($args) = \@_;\n$t ";
134 $new =~ s/(["\\])/\\$1/g; #"]);
135 $new = reindent($new);
136 $args = reindent($args);
138 $new =~ s/(['\\])/\\$1/g; #']);
141 "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
145 "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
148 print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n";
154 $new = 1 if $new eq '';
155 $new = reindent($new);
156 $args = reindent($args);
158 $new =~ s/(['\\])/\\$1/g; #']);
160 print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n";
163 print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n";
166 print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
169 } elsif (/^(include|import)\s*[<"](.*)[>"]/) {
170 ($incl = $2) =~ s/\.h$/.ph/;
171 print OUT $t,"require '$incl';\n";
172 } elsif(/^include_next\s*[<"](.*)[>"]/) {
173 ($incl = $1) =~ s/\.h$/.ph/;
174 # should've read up on #include_next properly before attempting
177 #print OUT $t, "{\n";
179 #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
180 #print OUT $t, "my(\$INC) = shift(\@INC);\n";
181 #print OUT $t, "require '$incl';\n";
182 #print OUT $t, "unshift(\@INC, \$INC);}\n";
184 #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
185 #print OUT $t, "}\n";
188 print OUT ($t, "my(\$i) = 0;\n");
189 print OUT ($t, "if(exists(\$INC{$incl})) {\n");
191 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
192 print OUT ($t, "++\$i while (\$i <= \$#INC",
193 " and \$INC[\$i].'/$incl' ne \$INC{'$incl'});\n");
194 print OUT ($t, "\$i = 0 if \$INC[\$i].'/$incl' ne",
195 " \$INC{'$incl'};\n");
197 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
198 print OUT ($t, "}\n");
200 "eval(\"require '\" . ",
201 "(\$i ? \$INC[\$i].'/' : '') . \"\$incl';\");");
202 # any better? require is smart enough not to try and include a
203 # file twice, i believe, so require-ing the same actual file
204 # should end up just being a null operation...
205 } elsif (/^ifdef\s+(\w+)/) {
206 print OUT $t,"if(defined(&$1)) {\n";
208 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
209 } elsif (/^ifndef\s+(\w+)/) {
210 print OUT $t,"unless(defined(&$1)) {\n";
212 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
213 } elsif (s/^if\s+//) {
218 print OUT $t,"if($new) {\n";
220 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
221 } elsif (s/^elif\s+//) {
227 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
228 print OUT $t,"}\n elsif($new) {\n";
230 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
233 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
234 print OUT $t,"} else {\n";
236 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
239 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
241 } elsif(/^undef\s+(\w+)/) {
242 print OUT $t, "undef(&$1) if defined(&$1);\n";
243 } elsif(/^error\s+(.*)/) {
244 print OUT $t, "die(\"$1\");\n";
245 } elsif(/^warning\s+(.*)/) {
246 print OUT $t, "warn(\"$1\");\n";
247 } elsif(/^ident\s+(.*)/) {
248 print OUT $t, "# $1\n";
254 $is_converted{$file} = 1;
255 queue_includes_from($file) if ($opt_a);
269 my($joined_args) = join('|', keys(%curargs));
272 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
273 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
274 s/^(\s+)// && do {$new .= ' '; next;};
275 s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;};
276 s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;};
277 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
278 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
279 s/^'((\\"|[^"])*)'// && do {
281 $new .= "ord('\$$1')";
287 # replace "sizeof(foo)" with "{foo}"
288 # also, remove * (C dereference operator) to avoid perl syntax
289 # problems. Where the %sizeof array comes from is anyone's
290 # guess (c2ph?), but this at least avoids fatal syntax errors.
291 # Behavior is undefined if sizeof() delimiters are unbalanced.
292 # This code was modified to able to handle constructs like this:
293 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
294 s/^sizeof\s*\(// && do {
296 my $lvl = 1; # already saw one open paren
297 # tack { on the front, and skip it in the loop
300 # find balanced closing paren
301 while ($index <= length($_) && $lvl > 0) {
302 $lvl++ if substr($_, $index, 1) eq "(";
303 $lvl-- if substr($_, $index, 1) eq ")";
306 # tack } on the end, replacing )
307 substr($_, $index - 1, 1) = "}";
308 # remove pesky * operators within the sizeof argument
309 substr($_, 0, $index - 1) =~ s/\*//g;
313 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
314 foreach (split /\s+/, $1) { # Make sure all the words are types,
315 last unless ($isatype{$_} or $_ eq 'struct');
317 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
319 # struct/union member, including arrays:
320 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
322 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
323 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
324 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
327 if(exists($curargs{$index})) {
332 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
336 s/^([_a-zA-Z]\w*)// && do {
338 if ($id eq 'struct') {
342 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
343 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
348 $new .= '->' if /^[\[\{]/;
349 } elsif ($id eq 'defined') {
352 s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
354 } elsif ($isatype{$id}) {
355 if ($new =~ /{\s*$/) {
357 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
361 $new .= q(').$id.q(');
364 if ($inif && $new !~ /defined\s*\($/) {
365 $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
374 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
379 # Handle recursive subdirectories without getting a grotesquely big stack.
380 # Could this be implemented using File::Find?
388 if ($file eq '-' or -f $file or -l $file) {
394 print STDERR "Skipping directory `$file'\n";
399 print STDERR "Skipping `$file': not a file or directory\n";
407 # Put all the files in $directory into @ARGV for processing.
410 my ($directory) = @_;
412 $directory =~ s:/$::;
414 opendir DIR, $directory;
415 foreach (readdir DIR) {
416 next if ($_ eq '.' or $_ eq '..');
418 # expand_glob() is going to be called until $ARGV[0] isn't a
419 # directory; so push directories, and unshift everything else.
420 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
421 else { unshift @ARGV, "$directory/$_" }
427 # Given $file, a symbolic link to a directory in the C include directory,
428 # make an equivalent symbolic link in $Dest_dir, if we can figure out how.
429 # Otherwise, just duplicate the file or directory.
433 my $target = eval 'readlink($dirlink)';
435 if ($target =~ m:^\.\./: or $target =~ m:^/:) {
436 # The target of a parent or absolute link could leave the $Dest_dir
437 # hierarchy, so let's put all of the contents of $dirlink (actually,
438 # the contents of $target) into @ARGV; as a side effect down the
439 # line, $dirlink will get created as an _actual_ directory.
440 expand_glob($dirlink);
442 if (-l "$Dest_dir/$dirlink") {
443 unlink "$Dest_dir/$dirlink" or
444 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
447 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
448 print "Linking $target -> $Dest_dir/$dirlink\n";
450 # Make sure that the link _links_ to something:
451 if (! -e "$Dest_dir/$target") {
452 mkpath("$Dest_dir/$target", 0755) or
453 print STDERR "Could not create $Dest_dir/$target/\n";
456 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
462 # Push all #included files in $file onto our stack, except for STDIN
463 # and files we've already processed.
464 sub queue_includes_from
469 return if ($file eq "-");
471 open HEADER, $file or return;
472 while (defined($line = <HEADER>)) {
473 while (/\\$/) { # Handle continuation lines
478 if ($line =~ /^#\s*include\s+<(.*?)>/) {
479 push(@ARGV, $1) unless $is_converted{$1};
486 # Determine include directories; $Config{usrinc} should be enough for (all
487 # non-GCC?) C compilers, but gcc uses an additional include directory.
490 my $from_gcc = `$Config{cc} -v 2>&1`;
491 $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
493 length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
499 ##############################################################################
504 h2ph - convert .h C header files to .ph Perl header files
508 B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
513 converts any C header files specified to the corresponding Perl header file
515 It is most easily run while in /usr/include:
517 cd /usr/include; h2ph * sys/*
521 cd /usr/include; h2ph -r -l .
523 The output files are placed in the hierarchy rooted at Perl's
524 architecture dependent library directory. You can specify a different
525 hierarchy with a B<-d> switch.
527 If run with no arguments, filters standard input to standard output.
533 =item -d destination_dir
535 Put the resulting B<.ph> files beneath B<destination_dir>, instead of
536 beneath the default Perl library location (C<$Config{'installsitsearch'}>).
540 Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
541 on all files in those directories (and their subdirectories, etc.). B<-r>
542 and B<-a> are mutually exclusive.
546 Run automagically; convert B<headerfiles>, as well as any B<.h> files
547 which they include. This option will search for B<.h> files in all
548 directories which your C compiler ordinarily uses. B<-a> and B<-r> are
553 Symbolic links will be replicated in the destination directory. If B<-l>
554 is not specified, then links are skipped over.
558 Put ``hints'' in the .ph files which will help in locating problems with
559 I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
560 errors, instead of the cryptic
562 [ some error condition ] at (eval mmm) line nnn
564 you will see the slightly more helpful
566 [ some error condition ] at filename.ph line nnn
568 However, the B<.ph> files almost double in size when built using B<-h>.
572 Include the code from the B<.h> file as a comment in the B<.ph> file.
573 This is primarily used for debugging I<h2ph>.
579 No environment variables are used.
598 The usual warnings if it can't read or write the files involved.
602 Doesn't construct the %sizeof array for you.
604 It doesn't handle all C constructs, but it does attempt to isolate
605 definitions inside evals so that you can get at the definitions
606 that it can translate.
608 It's only intended as a rough tool.
609 You may need to dicker with the files produced.
615 close OUT or die "Can't close $file: $!";
616 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
617 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';