mirror of
https://github.com/Gator96100/ProxSpace.git
synced 2025-01-09 04:13:15 -08:00
989 lines
28 KiB
Perl
989 lines
28 KiB
Perl
#!/usr/bin/perl
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eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
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if 0; # ^ Run only under a shell
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BEGIN { pop @INC if $INC[-1] eq '.' }
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use strict;
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use Config;
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use File::Path qw(mkpath);
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use Getopt::Std;
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# Make sure read permissions for all are set:
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if (defined umask && (umask() & 0444)) {
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umask (umask() & ~0444);
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}
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getopts('Dd:rlhaQe');
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use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e);
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die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
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my @inc_dirs = inc_dirs() if $opt_a;
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my $Exit = 0;
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my $Dest_dir = $opt_d || $Config{installsitearch};
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die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
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unless -d $Dest_dir;
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my @isatype = qw(
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char uchar u_char
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short ushort u_short
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int uint u_int
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long ulong u_long
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FILE key_t caddr_t
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float double size_t
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);
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my %isatype;
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@isatype{@isatype} = (1) x @isatype;
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my $inif = 0;
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my %Is_converted;
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my %bad_file = ();
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@ARGV = ('-') unless @ARGV;
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build_preamble_if_necessary();
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sub reindent($) {
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my($text) = shift;
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$text =~ s/\n/\n /g;
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$text =~ s/ /\t/g;
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$text;
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}
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my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile);
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my ($incl, $incl_type, $incl_quote, $next);
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while (defined (my $file = next_file())) {
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if (-l $file and -d $file) {
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link_if_possible($file) if ($opt_l);
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next;
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}
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# Recover from header files with unbalanced cpp directives
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$t = '';
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$tab = 0;
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# $eval_index goes into '#line' directives, to help locate syntax errors:
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$eval_index = 1;
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if ($file eq '-') {
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open(IN, "-");
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open(OUT, ">-");
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} else {
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($outfile = $file) =~ s/\.h$/.ph/ || next;
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print "$file -> $outfile\n" unless $opt_Q;
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if ($file =~ m|^(.*)/|) {
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$dir = $1;
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mkpath "$Dest_dir/$dir";
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}
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if ($opt_a) { # automagic mode: locate header file in @inc_dirs
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foreach (@inc_dirs) {
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chdir $_;
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last if -f $file;
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}
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}
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open(IN, "<", "$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);
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open(OUT, ">", "$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";
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}
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print OUT
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"require '_h2ph_pre.ph';\n\n",
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"no warnings qw(redefine misc);\n\n";
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while (defined (local $_ = next_line($file))) {
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if (s/^\s*\#\s*//) {
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if (s/^define\s+(\w+)//) {
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$name = $1;
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$new = '';
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s/\s+$//;
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s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0
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if (s/^\(([\w,\s]*)\)//) {
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$args = $1;
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my $proto = '() ';
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if ($args ne '') {
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$proto = '';
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foreach my $arg (split(/,\s*/,$args)) {
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$arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;
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$curargs{$arg} = 1;
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}
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$args =~ s/\b(\w)/\$$1/g;
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$args = "my($args) = \@_;\n$t ";
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}
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s/^\s+//;
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expr();
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$new =~ s/(["\\])/\\$1/g; #"]);
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EMIT($proto);
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} else {
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s/^\s+//;
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expr();
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$new = 1 if $new eq '';
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# Shunt around such directives as '#define FOO FOO':
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next if $new =~ /^\s*&\Q$name\E\s*\z/;
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$new = reindent($new);
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$args = reindent($args);
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$new =~ s/(['\\])/\\$1/g; #']);
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print OUT $t, 'eval ';
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if ($opt_h) {
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print OUT "\"\\n#line $eval_index $outfile\\n\" . ";
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$eval_index++;
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}
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print OUT "'sub $name () {$new;}' unless defined(&$name);\n";
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}
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} elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) {
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$incl_type = $1;
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$incl_quote = $2;
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$incl = $3;
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if (($incl_type eq 'include_next') ||
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($opt_e && exists($bad_file{$incl}))) {
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$incl =~ s/\.h$/.ph/;
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print OUT ($t,
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"eval {\n");
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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print OUT ($t, "my(\@REM);\n");
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if ($incl_type eq 'include_next') {
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print OUT ($t,
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"my(\%INCD) = map { \$INC{\$_} => 1 } ",
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"(grep { \$_ eq \"$incl\" } ",
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"keys(\%INC));\n");
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print OUT ($t,
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"\@REM = map { \"\$_/$incl\" } ",
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"(grep { not exists(\$INCD{\"\$_/$incl\"})",
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" and -f \"\$_/$incl\" } \@INC);\n");
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} else {
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print OUT ($t,
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"\@REM = map { \"\$_/$incl\" } ",
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"(grep {-r \"\$_/$incl\" } \@INC);\n");
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}
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print OUT ($t,
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"require \"\$REM[0]\" if \@REM;\n");
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$tab -= 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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print OUT ($t,
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"};\n");
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print OUT ($t,
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"warn(\$\@) if \$\@;\n");
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} else {
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$incl =~ s/\.h$/.ph/;
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# copy the prefix in the quote syntax (#include "x.h") case
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if ($incl !~ m|/| && $incl_quote eq q{"} && $file =~ m|^(.*)/|) {
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$incl = "$1/$incl";
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}
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print OUT $t,"require '$incl';\n";
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}
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} elsif (/^ifdef\s+(\w+)/) {
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print OUT $t,"if(defined(&$1)) {\n";
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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} elsif (/^ifndef\s+(\w+)/) {
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print OUT $t,"unless(defined(&$1)) {\n";
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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} elsif (s/^if\s+//) {
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$new = '';
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$inif = 1;
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expr();
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$inif = 0;
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print OUT $t,"if($new) {\n";
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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} elsif (s/^elif\s+//) {
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$new = '';
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$inif = 1;
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expr();
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$inif = 0;
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$tab -= 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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print OUT $t,"}\n elsif($new) {\n";
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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} elsif (/^else/) {
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$tab -= 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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print OUT $t,"} else {\n";
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$tab += 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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} elsif (/^endif/) {
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$tab -= 4;
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$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
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print OUT $t,"}\n";
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} elsif(/^undef\s+(\w+)/) {
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print OUT $t, "undef(&$1) if defined(&$1);\n";
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} elsif(/^error\s+(".*")/) {
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print OUT $t, "die($1);\n";
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} elsif(/^error\s+(.*)/) {
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print OUT $t, "die(\"", quotemeta($1), "\");\n";
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} elsif(/^warning\s+(.*)/) {
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print OUT $t, "warn(\"", quotemeta($1), "\");\n";
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} elsif(/^ident\s+(.*)/) {
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print OUT $t, "# $1\n";
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}
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} elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi
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until(/\{[^}]*\}.*;/ || /;/) {
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last unless defined ($next = next_line($file));
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chomp $next;
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# drop "#define FOO FOO" in enums
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$next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;
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# #defines in enums (aliases)
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$next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/;
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$_ .= $next;
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print OUT "# $next\n" if $opt_D;
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}
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s/#\s*if.*?#\s*endif//g; # drop #ifdefs
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s@/\*.*?\*/@@g;
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s/\s+/ /g;
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next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
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(my $enum_subs = $3) =~ s/\s//g;
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my @enum_subs = split(/,/, $enum_subs);
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my $enum_val = -1;
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foreach my $enum (@enum_subs) {
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my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
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$enum_name or next;
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$enum_value =~ s/^=//;
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$enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);
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if ($opt_h) {
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print OUT ($t,
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"eval(\"\\n#line $eval_index $outfile\\n",
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"sub $enum_name () \{ $enum_val; \}\") ",
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"unless defined(\&$enum_name);\n");
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++ $eval_index;
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} else {
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print OUT ($t,
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"eval(\"sub $enum_name () \{ $enum_val; \}\") ",
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"unless defined(\&$enum_name);\n");
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}
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}
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} elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/
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and !/;\s*$/ and !/{\s*}\s*$/)
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{ # { for vi
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# This is a hack to parse the inline functions in the glibc headers.
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# Warning: massive kludge ahead. We suppose inline functions
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# are mainly constructed like macros.
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while (1) {
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last unless defined ($next = next_line($file));
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chomp $next;
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undef $_, last if $next =~ /__THROW\s*;/
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or $next =~ /^(__extension__|extern|static)\b/;
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$_ .= " $next";
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print OUT "# $next\n" if $opt_D;
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last if $next =~ /^}|^{.*}\s*$/;
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}
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next if not defined; # because it's only a prototype
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s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g;
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# violently drop #ifdefs
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s/#\s*if.*?#\s*endif//g
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and print OUT "# some #ifdef were dropped here -- fill in the blanks\n";
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if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) {
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$name = $1;
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} else {
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warn "name not found"; next; # shouldn't occur...
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}
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my @args;
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if (s/^\(([^()]*)\)\s*(\w+\s*)*//) {
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for my $arg (split /,/, $1) {
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if ($arg =~ /(\w+)\s*$/) {
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$curargs{$1} = 1;
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push @args, $1;
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}
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}
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}
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$args = (
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@args
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? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t "
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: ""
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);
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my $proto = @args ? '' : '() ';
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$new = '';
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s/\breturn\b//g; # "return" doesn't occur in macros usually...
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expr();
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# try to find and perlify local C variables
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our @local_variables = (); # needs to be a our(): (?{...}) bug workaround
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{
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use re "eval";
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my $typelist = join '|', keys %isatype;
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$new =~ s['
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(?:(?:__)?const(?:__)?\s+)?
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(?:(?:un)?signed\s+)?
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(?:long\s+)?
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(?:$typelist)\s+
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(\w+)
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(?{ push @local_variables, $1 })
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']
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[my \$$1]gx;
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$new =~ s['
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(?:(?:__)?const(?:__)?\s+)?
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(?:(?:un)?signed\s+)?
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(?:long\s+)?
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(?:$typelist)\s+
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' \s+ &(\w+) \s* ;
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(?{ push @local_variables, $1 })
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]
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[my \$$1;]gx;
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}
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$new =~ s/&$_\b/\$$_/g for @local_variables;
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$new =~ s/(["\\])/\\$1/g; #"]);
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# now that's almost like a macro (we hope)
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EMIT($proto);
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}
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}
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$Is_converted{$file} = 1;
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if ($opt_e && exists($bad_file{$file})) {
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unlink($Dest_dir . '/' . $outfile);
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$next = '';
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} else {
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print OUT "1;\n";
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queue_includes_from($file) if $opt_a;
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}
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}
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if ($opt_e && (scalar(keys %bad_file) > 0)) {
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warn "Was unable to convert the following files:\n";
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warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";
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}
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exit $Exit;
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sub EMIT {
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my $proto = shift;
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$new = reindent($new);
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$args = reindent($args);
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if ($t ne '') {
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$new =~ s/(['\\])/\\$1/g; #']);
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if ($opt_h) {
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print OUT $t,
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"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
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$eval_index++;
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} else {
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print OUT $t,
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"eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";
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}
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} else {
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print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n";
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}
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%curargs = ();
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return;
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}
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sub expr {
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if (/\b__asm__\b/) { # freak out
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$new = '"(assembly code)"';
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return
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}
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my $joined_args;
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if(keys(%curargs)) {
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$joined_args = join('|', keys(%curargs));
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}
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while ($_ ne '') {
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s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator
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s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of
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s/^(\s+)// && do {$new .= ' '; next;};
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s/^0X([0-9A-F]+)[UL]*//i
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&& do {my $hex = $1;
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$hex =~ s/^0+//;
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if (length $hex > 8 && !$Config{use64bitint}) {
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# Croak if nv_preserves_uv_bits < 64 ?
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$new .= hex(substr($hex, -8)) +
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2**32 * hex(substr($hex, 0, -8));
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# The above will produce "erroneous" code
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# if the hex constant was e.g. inside UINT64_C
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# macro, but then again, h2ph is an approximation.
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} else {
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$new .= lc("0x$hex");
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}
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next;};
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s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};
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s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
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s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
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s/^'((\\"|[^"])*)'// && do {
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if ($curargs{$1}) {
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$new .= "ord('\$$1')";
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} else {
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$new .= "ord('$1')";
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}
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next;
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};
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# replace "sizeof(foo)" with "{foo}"
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# also, remove * (C dereference operator) to avoid perl syntax
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# problems. Where the %sizeof array comes from is anyone's
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# guess (c2ph?), but this at least avoids fatal syntax errors.
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# Behavior is undefined if sizeof() delimiters are unbalanced.
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# This code was modified to able to handle constructs like this:
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# sizeof(*(p)), which appear in the HP-UX 10.01 header files.
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s/^sizeof\s*\(// && do {
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$new .= '$sizeof';
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my $lvl = 1; # already saw one open paren
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# tack { on the front, and skip it in the loop
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$_ = "{" . "$_";
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my $index = 1;
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# find balanced closing paren
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while ($index <= length($_) && $lvl > 0) {
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$lvl++ if substr($_, $index, 1) eq "(";
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$lvl-- if substr($_, $index, 1) eq ")";
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$index++;
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}
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# tack } on the end, replacing )
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substr($_, $index - 1, 1) = "}";
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# remove pesky * operators within the sizeof argument
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substr($_, 0, $index - 1) =~ s/\*//g;
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next;
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};
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# Eliminate typedefs
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/\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
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my $doit = 1;
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foreach (split /\s+/, $1) { # Make sure all the words are types,
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unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){
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$doit = 0;
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last;
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}
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}
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if( $doit ){
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s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
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}
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};
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|
# struct/union member, including arrays:
|
|
s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
|
|
my $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 {
|
|
my $id = $1;
|
|
if ($id eq 'struct' || $id eq 'union') {
|
|
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*\(/) {
|
|
s/^\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 ($inif) {
|
|
if ($new =~ /defined\s*$/) {
|
|
$new .= '(&' . $id . ')';
|
|
} elsif ($new =~ /defined\s*\($/) {
|
|
$new .= '&' . $id;
|
|
} else {
|
|
$new .= '(defined(&' . $id . ') ? &' . $id . ' : undef)';
|
|
}
|
|
} elsif (/^\[/) {
|
|
$new .= " \$$id";
|
|
} else {
|
|
$new .= ' &' . $id;
|
|
}
|
|
}
|
|
next;
|
|
};
|
|
s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
|
|
}
|
|
}
|
|
|
|
|
|
sub next_line
|
|
{
|
|
my $file = shift;
|
|
my ($in, $out);
|
|
my $pre_sub_tri_graphs = 1;
|
|
|
|
READ: while (not eof IN) {
|
|
$in .= <IN>;
|
|
chomp $in;
|
|
next unless length $in;
|
|
|
|
while (length $in) {
|
|
if ($pre_sub_tri_graphs) {
|
|
# Preprocess all tri-graphs
|
|
# including things stuck in quoted string constants.
|
|
$in =~ s/\?\?=/#/g; # | ??=| #|
|
|
$in =~ s/\?\?\!/|/g; # | ??!| ||
|
|
$in =~ s/\?\?'/^/g; # | ??'| ^|
|
|
$in =~ s/\?\?\(/[/g; # | ??(| [|
|
|
$in =~ s/\?\?\)/]/g; # | ??)| ]|
|
|
$in =~ s/\?\?\-/~/g; # | ??-| ~|
|
|
$in =~ s/\?\?\//\\/g; # | ??/| \|
|
|
$in =~ s/\?\?</{/g; # | ??<| {|
|
|
$in =~ s/\?\?>/}/g; # | ??>| }|
|
|
}
|
|
if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {
|
|
# Tru64 disassembler.h evilness: mixed C and Pascal.
|
|
while (<IN>) {
|
|
last if /^\#endif/;
|
|
}
|
|
$in = "";
|
|
next READ;
|
|
}
|
|
if ($in =~ /^extern inline / && # Inlined assembler.
|
|
$^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
|
|
while (<IN>) {
|
|
last if /^}/;
|
|
}
|
|
$in = "";
|
|
next READ;
|
|
}
|
|
if ($in =~ s/\\$//) { # \-newline
|
|
$out .= ' ';
|
|
next READ;
|
|
} elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
|
|
$out .= $1;
|
|
} elsif ($in =~ s/^(\\.)//) { # \...
|
|
$out .= $1;
|
|
} elsif ($in =~ /^'/) { # '...
|
|
if ($in =~ s/^('(\\.|[^'\\])*')//) {
|
|
$out .= $1;
|
|
} else {
|
|
next READ;
|
|
}
|
|
} elsif ($in =~ /^"/) { # "...
|
|
if ($in =~ s/^("(\\.|[^"\\])*")//) {
|
|
$out .= $1;
|
|
} else {
|
|
next READ;
|
|
}
|
|
} elsif ($in =~ s/^\/\/.*//) { # //...
|
|
# fall through
|
|
} elsif ($in =~ m/^\/\*/) { # /*...
|
|
# C comment removal adapted from perlfaq6:
|
|
if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
|
|
$out .= ' ';
|
|
} else { # Incomplete /* */
|
|
next READ;
|
|
}
|
|
} elsif ($in =~ s/^(\/)//) { # /...
|
|
$out .= $1;
|
|
} elsif ($in =~ s/^([^\'\"\\\/]+)//) {
|
|
$out .= $1;
|
|
} elsif ($^O eq 'linux' &&
|
|
$file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
|
|
$in =~ s!\'T KNOW!!) {
|
|
$out =~ s!I DON$!I_DO_NOT_KNOW!;
|
|
} else {
|
|
if ($opt_e) {
|
|
warn "Cannot parse $file:\n$in\n";
|
|
$bad_file{$file} = 1;
|
|
$in = '';
|
|
$out = undef;
|
|
last READ;
|
|
} else {
|
|
die "Cannot parse:\n$in\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
last READ if $out =~ /\S/;
|
|
}
|
|
|
|
return $out;
|
|
}
|
|
|
|
|
|
# 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+([<"])(.*?)[>"]/) {
|
|
my ($delimiter, $new_file) = ($1, $2);
|
|
# copy the prefix in the quote syntax (#include "x.h") case
|
|
if ($delimiter eq q{"} && $file =~ m|^(.*)/|) {
|
|
$new_file = "$1/$new_file";
|
|
}
|
|
push(@ARGV, $new_file) unless $Is_converted{$new_file};
|
|
}
|
|
}
|
|
close HEADER;
|
|
}
|
|
|
|
|
|
# Determine include directories; $Config{usrinc} should be enough for (all
|
|
# non-GCC?) C compilers, but gcc uses additional include directories.
|
|
sub inc_dirs
|
|
{
|
|
my $from_gcc = `LC_ALL=C $Config{cc} -v -E - < /dev/null 2>&1 | awk '/^#include/, /^End of search list/' | grep '^ '`;
|
|
length($from_gcc) ? (split(' ', $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 = 4;
|
|
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 $VERSION\n";
|
|
# Prevent non-portable hex constants from warning.
|
|
#
|
|
# We still produce an overflow warning if we can't represent
|
|
# a hex constant as an integer.
|
|
print PREAMBLE "no warnings qw(portable);\n";
|
|
|
|
foreach (sort keys %define) {
|
|
if ($opt_D) {
|
|
print PREAMBLE "# $_=$define{$_}\n";
|
|
}
|
|
if ($define{$_} =~ /^\((.*)\)$/) {
|
|
# parenthesized value: d=(v)
|
|
$define{$_} = $1;
|
|
}
|
|
if (/^(\w+)\((\w)\)$/) {
|
|
my($macro, $arg) = ($1, $2);
|
|
my $def = $define{$_};
|
|
$def =~ s/$arg/\$\{$arg\}/g;
|
|
print PREAMBLE <<DEFINE;
|
|
unless (defined &$macro) { sub $macro(\$) { my (\$$arg) = \@_; \"$def\" } }
|
|
|
|
DEFINE
|
|
} elsif
|
|
($define{$_} =~ /^([+-]?(\d+)?\.\d+([eE][+-]?\d+)?)[FL]?$/) {
|
|
# float:
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { $1 } }\n\n";
|
|
} elsif ($define{$_} =~ /^([+-]?\d+)U?L{0,2}$/i) {
|
|
# integer:
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { $1 } }\n\n";
|
|
} elsif ($define{$_} =~ /^([+-]?0x[\da-f]+)U?L{0,2}$/i) {
|
|
# hex integer
|
|
# Special cased, since perl warns on hex integers
|
|
# that can't be represented in a UV.
|
|
#
|
|
# This way we get the warning at time of use, so the user
|
|
# only gets the warning if they happen to use this
|
|
# platform-specific definition.
|
|
my $code = $1;
|
|
$code = "hex('$code')" if length $code > 10;
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { $code } }\n\n";
|
|
} elsif ($define{$_} =~ /^\w+$/) {
|
|
my $def = $define{$_};
|
|
if ($isatype{$def}) {
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { \"$def\" } }\n\n";
|
|
} else {
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { &$def } }\n\n";
|
|
}
|
|
} else {
|
|
print PREAMBLE
|
|
"unless (defined &$_) { sub $_() { \"",
|
|
quotemeta($define{$_}), "\" } }\n\n";
|
|
}
|
|
}
|
|
print PREAMBLE "\n1;\n"; # avoid 'did not return a true value' when empty
|
|
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 $allsymbols = join " ",
|
|
@Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};
|
|
|
|
# Split compiler pre-definitions into 'key=value' pairs:
|
|
while ($allsymbols =~ /([^\s]+)=((\\\s|[^\s])+)/g) {
|
|
$define{$1} = $2;
|
|
if ($opt_D) {
|
|
print STDERR "$_: $1 -> $2\n";
|
|
}
|
|
}
|
|
|
|
return %define;
|
|
}
|
|
|
|
|
|
1;
|
|
|
|
##############################################################################
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
h2ph - convert .h C header files to .ph Perl header files
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
B<h2ph [-d destination directory] [-r | -a] [-l] [-h] [-e] [-D] [-Q]
|
|
[headerfiles]>
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
I<h2ph>
|
|
converts any C header files specified to the corresponding Perl header file
|
|
format.
|
|
It is most easily run while in /usr/include:
|
|
|
|
cd /usr/include; h2ph * sys/*
|
|
|
|
or
|
|
|
|
cd /usr/include; h2ph * sys/* arpa/* netinet/*
|
|
|
|
or
|
|
|
|
cd /usr/include; h2ph -r -l .
|
|
|
|
The output files are placed in the hierarchy rooted at Perl's
|
|
architecture dependent library directory. You can specify a different
|
|
hierarchy with a B<-d> switch.
|
|
|
|
If run with no arguments, filters standard input to standard output.
|
|
|
|
=head1 OPTIONS
|
|
|
|
=over 4
|
|
|
|
=item -d destination_dir
|
|
|
|
Put the resulting B<.ph> files beneath B<destination_dir>, instead of
|
|
beneath the default Perl library location (C<$Config{'installsitearch'}>).
|
|
|
|
=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 -e
|
|
|
|
If an error is encountered during conversion, output file will be removed and
|
|
a warning emitted instead of terminating the conversion immediately.
|
|
|
|
=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
|
|
|
|
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.
|
|
|
|
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
|
|
|