use Config;
use File::Basename qw(basename dirname);
+use Cwd;
# List explicitly here the variables you want Configure to
# generate. Metaconfig only looks for shell variables, so you
# This forces PL files to create target in same directory as PL file.
# This is so that make depend always knows where to find PL derivatives.
+$origdir = cwd;
chdir dirname($0);
$file = basename($0, '.PL');
$file .= '.com' if $^O eq 'VMS';
use File::Path qw(mkpath);
use Getopt::Std;
-getopts('Dd:rlh');
+getopts('Dd:rlhaQ');
+die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
+@inc_dirs = inc_dirs() if $opt_a;
my $Exit = 0;
@ARGV = ('-') unless @ARGV;
+build_preamble_if_necessary();
+
while (defined ($file = next_file())) {
if (-l $file and -d $file) {
link_if_possible($file) if ($opt_l);
open(OUT, ">-");
} else {
($outfile = $file) =~ s/\.h$/.ph/ || next;
- print "$file -> $outfile\n";
+ print "$file -> $outfile\n" unless $opt_Q;
if ($file =~ m|^(.*)/|) {
$dir = $1;
mkpath "$Dest_dir/$dir";
}
+
+ if ($opt_a) { # automagic mode: locate header file in @inc_dirs
+ foreach (@inc_dirs) {
+ chdir $_;
+ last if -f $file;
+ }
+ }
+
open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);
open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";
}
+
+ print OUT "require '_h2ph_pre.ph';\n\n";
while (<IN>) {
chop;
while (/\\$/) {
chop;
}
print OUT "# $_\n" if $opt_D;
+
if (s:/\*:\200:g) {
s:\*/:\201:g;
s/\200[^\201]*\201//g; # delete single line comments
redo;
}
}
- if (s/^\s*#\s*//) {
+ if (s/^\s*\#\s*//) {
if (s/^define\s+(\w+)//) {
$name = $1;
$new = '';
$args = reindent($args);
if ($t ne '') {
$new =~ s/(['\\])/\\$1/g; #']);
+
if ($opt_h) {
print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n";
$eval_index++;
print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n";
}
} else {
+ # Shunt around such directives as `#define FOO FOO':
+ next if " \&$name" eq $new;
+
print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
}
}
print OUT $t,"require '$incl';\n";
} elsif(/^include_next\s*[<"](.*)[>"]/) {
($incl = $1) =~ s/\.h$/.ph/;
- # should've read up on #include_next properly before attempting
- # to implement it...
- #
- #print OUT $t, "{\n";
- #$tab += 4;
- #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
- #print OUT $t, "my(\$INC) = shift(\@INC);\n";
- #print OUT $t, "require '$incl';\n";
- #print OUT $t, "unshift(\@INC, \$INC);}\n";
- #$tab -= 4;
- #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
- #print OUT $t, "}\n";
- #
- # try this instead:
- print OUT ($t, "my(\$i) = 0;\n");
- print OUT ($t, "if(exists(\$INC{$incl})) {\n");
- $tab += 4;
- $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
- print OUT ($t, "++\$i while (\$i <= \$#INC",
- " and \$INC[\$i].'/$incl' ne \$INC{'$incl'});\n");
- print OUT ($t, "\$i = 0 if \$INC[\$i].'/$incl' ne",
- " \$INC{'$incl'};\n");
- $tab -= 4;
- $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
- print OUT ($t, "}\n");
print OUT ($t,
- "eval(\"require '\" . ",
- "(\$i ? \$INC[\$i].'/' : '') . \"\$incl';\");");
- # any better? require is smart enough not to try and include a
- # file twice, i believe, so require-ing the same actual file
- # should end up just being a null operation...
+ "eval {\n");
+ $tab += 4;
+ $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
+ print OUT ($t,
+ "my(\%INCD) = map { \$INC{\$_} => 1 } ",
+ "(grep { \$_ eq \"$incl\" } keys(\%INC));\n");
+ print OUT ($t,
+ "my(\@REM) = map { \"\$_/$incl\" } ",
+ "(grep { not exists(\$INCD{\"\$_/$incl\"})",
+ "and -f \"\$_/$incl\" } \@INC);\n");
+ print OUT ($t,
+ "require \"\$REM[0]\" if \@REM;\n");
+ $tab -= 4;
+ $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
+ print OUT ($t,
+ "};\n");
+ print OUT ($t,
+ "warn(\$\@) if \$\@;\n");
} elsif (/^ifdef\s+(\w+)/) {
print OUT $t,"if(defined(&$1)) {\n";
$tab += 4;
print OUT $t,"}\n";
} elsif(/^undef\s+(\w+)/) {
print OUT $t, "undef(&$1) if defined(&$1);\n";
+ } elsif(/^error\s+(".*")/) {
+ print OUT $t, "die($1);\n";
} elsif(/^error\s+(.*)/) {
- print OUT $t, "die(\"$1\");\n";
+ print OUT $t, "die(\"", quotemeta($1), "\");\n";
} elsif(/^warning\s+(.*)/) {
- print OUT $t, "warn(\"$1\");\n";
+ print OUT $t, "warn(\"", quotemeta($1), "\");\n";
} elsif(/^ident\s+(.*)/) {
print OUT $t, "# $1\n";
}
+ } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?\{/) {
+ until(/\}.*?;/) {
+ chomp($next = <IN>);
+ $_ .= $next;
+ print OUT "# $next\n" if $opt_D;
+ }
+ s@/\*.*?\*/@@g;
+ s/\s+/ /g;
+ /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
+ ($enum_subs = $3) =~ s/\s//g;
+ @enum_subs = split(/,/, $enum_subs);
+ $enum_val = -1;
+ for $enum (@enum_subs) {
+ ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
+ $enum_value =~ s/^=//;
+ $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
+ if ($opt_h) {
+ print OUT ($t,
+ "eval(\"\\n#line $eval_index $outfile\\n",
+ "sub $enum_name () \{ $enum_val; \}\") ",
+ "unless defined(\&$enum_name);\n");
+ ++ $eval_index;
+ } else {
+ print OUT ($t,
+ "eval(\"sub $enum_name () \{ $enum_val; \}\") ",
+ "unless defined(\&$enum_name);\n");
+ }
+ }
}
}
print OUT "1;\n";
+
+ $is_converted{$file} = 1;
+ queue_includes_from($file) if ($opt_a);
}
exit $Exit;
} else {
print STDERR "Skipping directory `$file'\n";
}
- } else {
+ } elsif ($opt_a) {
+ return $file;
+ } else {
print STDERR "Skipping `$file': not a file or directory\n";
}
}
# expand_glob() is going to be called until $ARGV[0] isn't a
# directory; so push directories, and unshift everything else.
- if (-d "$directory/$_") {
- push @ARGV, "$directory/$_";
- } else {
- unshift @ARGV, "$directory/$_";
- }
+ if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
+ else { unshift @ARGV, "$directory/$_" }
}
closedir DIR;
}
unlink "$Dest_dir/$dirlink" or
print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
}
+
if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
print "Linking $target -> $Dest_dir/$dirlink\n";
# Make sure that the link _links_ to something:
if (! -e "$Dest_dir/$target") {
- mkdir("$Dest_dir/$target", 0755) or
+ mkpath("$Dest_dir/$target", 0755) or
print STDERR "Could not create $Dest_dir/$target/\n";
}
} else {
}
+# Push all #included files in $file onto our stack, except for STDIN
+# and files we've already processed.
+sub queue_includes_from
+{
+ my ($file) = @_;
+ my $line;
+
+ return if ($file eq "-");
+
+ open HEADER, $file or return;
+ while (defined($line = <HEADER>)) {
+ while (/\\$/) { # Handle continuation lines
+ chop $line;
+ $line .= <HEADER>;
+ }
+
+ if ($line =~ /^#\s*include\s+<(.*?)>/) {
+ push(@ARGV, $1) unless $is_converted{$1};
+ }
+ }
+ close HEADER;
+}
+
+
+# Determine include directories; $Config{usrinc} should be enough for (all
+# non-GCC?) C compilers, but gcc uses an additional include directory.
+sub inc_dirs
+{
+ my $from_gcc = `$Config{cc} -v 2>&1`;
+ $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
+
+ length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
+}
+
+
+# Create "_h2ph_pre.ph", if it doesn't exist or was built by a different
+# version of h2ph.
+sub build_preamble_if_necessary
+{
+ # Increment $VERSION every time this function is modified:
+ my $VERSION = 2;
+ my $preamble = "$Dest_dir/_h2ph_pre.ph";
+
+ # Can we skip building the preamble file?
+ if (-r $preamble) {
+ # Extract version number from first line of preamble:
+ open PREAMBLE, $preamble or die "Cannot open $preamble: $!";
+ my $line = <PREAMBLE>;
+ $line =~ /(\b\d+\b)/;
+ close PREAMBLE or die "Cannot close $preamble: $!";
+
+ # Don't build preamble if a compatible preamble exists:
+ return if $1 == $VERSION;
+ }
+
+ my (%define) = _extract_cc_defines();
+
+ open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!";
+ print PREAMBLE "# This file was created by h2ph version $VERSION\n";
+
+ foreach (sort keys %define) {
+ if ($opt_D) {
+ print PREAMBLE "# $_=$define{$_}\n";
+ }
+
+ if ($define{$_} =~ /^\d+$/) {
+ print PREAMBLE
+ "unless (defined &$_) { sub $_() { $define{$_} } }\n\n";
+ } elsif ($define{$_} =~ /^\w+$/) {
+ print PREAMBLE
+ "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n";
+ } else {
+ print PREAMBLE
+ "unless (defined &$_) { sub $_() { \"",
+ quotemeta($define{$_}), "\" } }\n\n";
+ }
+ }
+ close PREAMBLE or die "Cannot close $preamble: $!";
+}
+
+
+# %Config contains information on macros that are pre-defined by the
+# system's compiler. We need this information to make the .ph files
+# function with perl as the .h files do with cc.
+sub _extract_cc_defines
+{
+ my %define;
+ my $allsymbols = join " ", @Config{ccsymbols, cppsymbols, cppccsymbols};
+
+ # Split compiler pre-definitions into `key=value' pairs:
+ foreach (split /\s+/, $allsymbols) {
+ /(.+?)=(.+)/ and $define{$1} = $2;
+
+ if ($opt_D) {
+ print STDERR "$_: $1 -> $2\n";
+ }
+ }
+
+ return %define;
+}
+
+
1;
##############################################################################
=head1 SYNOPSIS
-B<h2ph [-d destination directory] [-r] [-l] [headerfiles]>
+B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
=head1 DESCRIPTION
=item -r
Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
-on all files in those directories (and their subdirectories, etc.).
+on all files in those directories (and their subdirectories, etc.). B<-r>
+and B<-a> are mutually exclusive.
+
+=item -a
+
+Run automagically; convert B<headerfiles>, as well as any B<.h> files
+which they include. This option will search for B<.h> files in all
+directories which your C compiler ordinarily uses. B<-a> and B<-r> are
+mutually exclusive.
=item -l
However, the B<.ph> files almost double in size when built using B<-h>.
+=item -D
+
+Include the code from the B<.h> file as a comment in the B<.ph> file.
+This is primarily used for debugging I<h2ph>.
+
+=item -Q
+
+``Quiet'' mode; don't print out the names of the files being converted.
+
=back
=head1 ENVIRONMENT
It's only intended as a rough tool.
You may need to dicker with the files produced.
+Doesn't run with C<use strict>
+
+You have to run this program by hand; it's not run as part of the Perl
+installation.
+
+Doesn't handle complicated expressions built piecemeal, a la:
+
+ enum {
+ FIRST_VALUE,
+ SECOND_VALUE,
+ #ifdef ABC
+ THIRD_VALUE
+ #endif
+ };
+
+Doesn't necessarily locate all of your C compiler's internally-defined
+symbols.
+
=cut
!NO!SUBS!
close OUT or die "Can't close $file: $!";
chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';
+chdir $origdir;
https://perl5.git.perl.org / perl5.git / blobdiff