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Diffstat (limited to 'contrib/perl5/utils/h2ph.PL')
| -rw-r--r-- | contrib/perl5/utils/h2ph.PL | 636 |
1 files changed, 636 insertions, 0 deletions
diff --git a/contrib/perl5/utils/h2ph.PL b/contrib/perl5/utils/h2ph.PL new file mode 100644 index 0000000..066f2c9 --- /dev/null +++ b/contrib/perl5/utils/h2ph.PL @@ -0,0 +1,636 @@ +#!/usr/local/bin/perl + +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 +# have to mention them as if they were shell variables, not +# %Config entries. Thus you write +# $startperl +# to ensure Configure will look for $Config{startperl}. +# Wanted: $archlibexp + +# This forces PL files to create target in same directory as PL file. +# This is so that make depend always knows where to find PL derivatives. +$origdir = cwd; +chdir dirname($0); +$file = basename($0, '.PL'); +$file .= '.com' if $^O eq 'VMS'; + +open OUT,">$file" or die "Can't create $file: $!"; + +print "Extracting $file (with variable substitutions)\n"; + +# In this section, perl variables will be expanded during extraction. +# You can use $Config{...} to use Configure variables. + +print OUT <<"!GROK!THIS!"; +$Config{startperl} + eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' + if \$running_under_some_shell; +!GROK!THIS! + +# In the following, perl variables are not expanded during extraction. + +print OUT <<'!NO!SUBS!'; + +use Config; +use File::Path qw(mkpath); +use Getopt::Std; + +getopts('Dd:rlhaQ'); +die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); +@inc_dirs = inc_dirs() if $opt_a; + +my $Exit = 0; + +my $Dest_dir = $opt_d || $Config{installsitearch}; +die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" + unless -d $Dest_dir; + +@isatype = split(' ',<<END); + char uchar u_char + short ushort u_short + int uint u_int + long ulong u_long + FILE key_t caddr_t +END + +@isatype{@isatype} = (1) x @isatype; +$inif = 0; + +@ARGV = ('-') unless @ARGV; + +while (defined ($file = next_file())) { + if (-l $file and -d $file) { + link_if_possible($file) if ($opt_l); + next; + } + + # Recover from header files with unbalanced cpp directives + $t = ''; + $tab = 0; + + # $eval_index goes into ``#line'' directives, to help locate syntax errors: + $eval_index = 1; + + if ($file eq '-') { + open(IN, "-"); + open(OUT, ">-"); + } else { + ($outfile = $file) =~ s/\.h$/.ph/ || next; + 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: $!\n"; + } + while (<IN>) { + chop; + while (/\\$/) { + chop; + $_ .= <IN>; + chop; + } + print OUT "# $_\n" if $opt_D; + if (s:/\*:\200:g) { + s:\*/:\201:g; + s/\200[^\201]*\201//g; # delete single line comments + if (s/\200.*//) { # begin multi-line comment? + $_ .= '/*'; + $_ .= <IN>; + redo; + } + } + if (s/^\s*\#\s*//) { + if (s/^define\s+(\w+)//) { + $name = $1; + $new = ''; + s/\s+$//; + if (s/^\(([\w,\s]*)\)//) { + $args = $1; + my $proto = '() '; + if ($args ne '') { + $proto = ''; + foreach $arg (split(/,\s*/,$args)) { + $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; + $curargs{$arg} = 1; + } + $args =~ s/\b(\w)/\$$1/g; + $args = "local($args) = \@_;\n$t "; + } + s/^\s+//; + expr(); + $new =~ s/(["\\])/\\$1/g; #"]); + $new = reindent($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 $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; + $eval_index++; + } else { + print OUT $t, + "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; + } + } else { + print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; + } + %curargs = (); + } else { + s/^\s+//; + expr(); + $new = 1 if $new eq ''; + $new = reindent($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++; + } else { + print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; + } + } else { + print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; + } + } + } elsif (/^(include|import)\s*[<"](.*)[>"]/) { + ($incl = $2) =~ s/\.h$/.ph/; + print OUT $t,"require '$incl';\n"; + } elsif(/^include_next\s*[<"](.*)[>"]/) { + ($incl = $1) =~ s/\.h$/.ph/; + print OUT ($t, + "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; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + } elsif (/^ifndef\s+(\w+)/) { + print OUT $t,"unless(defined(&$1)) {\n"; + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + } elsif (s/^if\s+//) { + $new = ''; + $inif = 1; + expr(); + $inif = 0; + print OUT $t,"if($new) {\n"; + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + } elsif (s/^elif\s+//) { + $new = ''; + $inif = 1; + expr(); + $inif = 0; + $tab -= 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT $t,"}\n elsif($new) {\n"; + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + } elsif (/^else/) { + $tab -= 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT $t,"} else {\n"; + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + } elsif (/^endif/) { + $tab -= 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + 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(/^warning\s+(.*)/) { + print OUT $t, "warn(\"$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 $Exit; + +sub reindent($) { + my($text) = shift; + $text =~ s/\n/\n /g; + $text =~ s/ /\t/g; + $text; +} + +sub expr { + if(keys(%curargs)) { + my($joined_args) = join('|', keys(%curargs)); + } + while ($_ ne '') { + s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator + s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of + s/^(\s+)// && do {$new .= ' '; next;}; + s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;}; + s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;}; + s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; + s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; + s/^'((\\"|[^"])*)'// && do { + if ($curargs{$1}) { + $new .= "ord('\$$1')"; + } else { + $new .= "ord('$1')"; + } + next; + }; + # replace "sizeof(foo)" with "{foo}" + # also, remove * (C dereference operator) to avoid perl syntax + # problems. Where the %sizeof array comes from is anyone's + # guess (c2ph?), but this at least avoids fatal syntax errors. + # Behavior is undefined if sizeof() delimiters are unbalanced. + # This code was modified to able to handle constructs like this: + # sizeof(*(p)), which appear in the HP-UX 10.01 header files. + s/^sizeof\s*\(// && do { + $new .= '$sizeof'; + my $lvl = 1; # already saw one open paren + # tack { on the front, and skip it in the loop + $_ = "{" . "$_"; + my $index = 1; + # find balanced closing paren + while ($index <= length($_) && $lvl > 0) { + $lvl++ if substr($_, $index, 1) eq "("; + $lvl-- if substr($_, $index, 1) eq ")"; + $index++; + } + # tack } on the end, replacing ) + substr($_, $index - 1, 1) = "}"; + # remove pesky * operators within the sizeof argument + substr($_, 0, $index - 1) =~ s/\*//g; + next; + }; + # Eliminate typedefs + /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { + foreach (split /\s+/, $1) { # Make sure all the words are types, + last unless ($isatype{$_} or $_ eq 'struct'); + } + s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. + }; + # struct/union member, including arrays: + s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { + $id = $1; + $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; + $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); + while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { + my($index) = $1; + $index =~ s/\s//g; + if(exists($curargs{$index})) { + $index = "\$$index"; + } else { + $index = "&$index"; + } + $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; + } + $new .= " (\$$id)"; + }; + s/^([_a-zA-Z]\w*)// && do { + $id = $1; + if ($id eq 'struct') { + s/^\s+(\w+)//; + $id .= ' ' . $1; + $isatype{$id} = 1; + } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { + while (s/^\s+(\w+)//) { $id .= ' ' . $1; } + $isatype{$id} = 1; + } + if ($curargs{$id}) { + $new .= "\$$id"; + $new .= '->' if /^[\[\{]/; + } elsif ($id eq 'defined') { + $new .= 'defined'; + } elsif (/^\(/) { + s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat + $new .= " &$id"; + } elsif ($isatype{$id}) { + if ($new =~ /{\s*$/) { + $new .= "'$id'"; + } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { + $new =~ s/\(\s*$//; + s/^[\s*]*\)//; + } else { + $new .= q(').$id.q('); + } + } else { + if ($inif && $new !~ /defined\s*\($/) { + $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; + } elsif (/^\[/) { + $new .= " \$$id"; + } else { + $new .= ' &' . $id; + } + } + next; + }; + s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; + } +} + + +# Handle recursive subdirectories without getting a grotesquely big stack. +# Could this be implemented using File::Find? +sub next_file +{ + my $file; + + while (@ARGV) { + $file = shift @ARGV; + + if ($file eq '-' or -f $file or -l $file) { + return $file; + } elsif (-d $file) { + if ($opt_r) { + expand_glob($file); + } else { + print STDERR "Skipping directory `$file'\n"; + } + } elsif ($opt_a) { + return $file; + } else { + print STDERR "Skipping `$file': not a file or directory\n"; + } + } + + return undef; +} + + +# Put all the files in $directory into @ARGV for processing. +sub expand_glob +{ + my ($directory) = @_; + + $directory =~ s:/$::; + + opendir DIR, $directory; + foreach (readdir DIR) { + next if ($_ eq '.' or $_ eq '..'); + + # 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/$_" } + } + closedir DIR; +} + + +# Given $file, a symbolic link to a directory in the C include directory, +# make an equivalent symbolic link in $Dest_dir, if we can figure out how. +# Otherwise, just duplicate the file or directory. +sub link_if_possible +{ + my ($dirlink) = @_; + my $target = eval 'readlink($dirlink)'; + + if ($target =~ m:^\.\./: or $target =~ m:^/:) { + # The target of a parent or absolute link could leave the $Dest_dir + # hierarchy, so let's put all of the contents of $dirlink (actually, + # the contents of $target) into @ARGV; as a side effect down the + # line, $dirlink will get created as an _actual_ directory. + expand_glob($dirlink); + } else { + if (-l "$Dest_dir/$dirlink") { + 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") { + mkpath("$Dest_dir/$target", 0755) or + print STDERR "Could not create $Dest_dir/$target/\n"; + } + } else { + print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; + } + } +} + + +# 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}); +} + + +1; + +############################################################################## +__END__ + +=head1 NAME + +h2ph - convert .h C header files to .ph Perl header files + +=head1 SYNOPSIS + +B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> + +=head1 DESCRIPTION + +I<h2ph> +converts any C header files specified to the corresponding Perl header file +format. +It is most easily run while in /usr/include: + + cd /usr/include; h2ph * sys/* + +or + + cd /usr/include; h2ph -r -l . + +The output files are placed in the hierarchy rooted at Perl's +architecture dependent library directory. You can specify a different +hierarchy with a B<-d> switch. + +If run with no arguments, filters standard input to standard output. + +=head1 OPTIONS + +=over 4 + +=item -d destination_dir + +Put the resulting B<.ph> files beneath B<destination_dir>, instead of +beneath the default Perl library location (C<$Config{'installsitsearch'}>). + +=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.). 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 + +Symbolic links will be replicated in the destination directory. If B<-l> +is not specified, then links are skipped over. + +=item -h + +Put ``hints'' in the .ph files which will help in locating problems with +I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax +errors, instead of the cryptic + + [ some error condition ] at (eval mmm) line nnn + +you will see the slightly more helpful + + [ some error condition ] at filename.ph line nnn + +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>. + +=back + +=head1 ENVIRONMENT + +No environment variables are used. + +=head1 FILES + + /usr/include/*.h + /usr/include/sys/*.h + +etc. + +=head1 AUTHOR + +Larry Wall + +=head1 SEE ALSO + +perl(1) + +=head1 DIAGNOSTICS + +The usual warnings if it can't read or write the files involved. + +=head1 BUGS + +Doesn't construct the %sizeof array for you. + +It doesn't handle all C constructs, but it does attempt to isolate +definitions inside evals so that you can get at the definitions +that it can translate. + +It's only intended as a rough tool. +You may need to dicker with the files produced. + +=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; |
