637 lines
17 KiB
Perl
637 lines
17 KiB
Perl
#!/usr/local/bin/perl
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use Config;
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use File::Basename qw(basename dirname);
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use Cwd;
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# List explicitly here the variables you want Configure to
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# generate. Metaconfig only looks for shell variables, so you
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# have to mention them as if they were shell variables, not
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# %Config entries. Thus you write
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# $startperl
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# to ensure Configure will look for $Config{startperl}.
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# Wanted: $archlibexp
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# This forces PL files to create target in same directory as PL file.
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# This is so that make depend always knows where to find PL derivatives.
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$origdir = cwd;
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chdir dirname($0);
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$file = basename($0, '.PL');
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$file .= '.com' if $^O eq 'VMS';
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open OUT,">$file" or die "Can't create $file: $!";
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print "Extracting $file (with variable substitutions)\n";
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# In this section, perl variables will be expanded during extraction.
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# You can use $Config{...} to use Configure variables.
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print OUT <<"!GROK!THIS!";
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$Config{startperl}
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eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
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if \$running_under_some_shell;
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!GROK!THIS!
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# In the following, perl variables are not expanded during extraction.
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print OUT <<'!NO!SUBS!';
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use Config;
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use File::Path qw(mkpath);
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use Getopt::Std;
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getopts('Dd:rlhaQ');
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die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
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@inc_dirs = inc_dirs() if $opt_a;
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my $Exit = 0;
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my $Dest_dir = $opt_d || $Config{installarchlib};
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die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
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unless -d $Dest_dir;
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@isatype = split(' ',<<END);
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char uchar u_char
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short ushort u_short
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int uint u_int
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long ulong u_long
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FILE key_t caddr_t
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END
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@isatype{@isatype} = (1) x @isatype;
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$inif = 0;
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@ARGV = ('-') unless @ARGV;
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while (defined ($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: $!\n";
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}
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while (<IN>) {
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chop;
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while (/\\$/) {
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chop;
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$_ .= <IN>;
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chop;
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}
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print OUT "# $_\n" if $opt_D;
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if (s:/\*:\200:g) {
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s:\*/:\201:g;
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s/\200[^\201]*\201//g; # delete single line comments
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if (s/\200.*//) { # begin multi-line comment?
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$_ .= '/*';
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$_ .= <IN>;
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redo;
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}
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}
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if (s/^\s*\#\s*//) {
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if (s/^define\s+(\w+)//) {
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$name = $1;
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$new = '';
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s/\s+$//;
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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 $arg (split(/,\s*/,$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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$args = "local($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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$new = reindent($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($new);\n }\n}\n";
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}
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%curargs = ();
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} else {
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s/^\s+//;
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expr();
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$new = 1 if $new eq '';
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$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,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n";
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$eval_index++;
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} else {
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print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n";
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}
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} else {
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print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
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}
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}
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} elsif (/^(include|import)\s*[<"](.*)[>"]/) {
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($incl = $2) =~ s/\.h$/.ph/;
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print OUT $t,"require '$incl';\n";
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} elsif(/^include_next\s*[<"](.*)[>"]/) {
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($incl = $1) =~ s/\.h$/.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,
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"my(\%INCD) = map { \$INC{\$_} => 1 } ",
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"(grep { \$_ eq \"$incl\" } keys(\%INC));\n");
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print OUT ($t,
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"my(\@REM) = map { \"\$_/$incl\" } ",
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"(grep { not exists(\$INCD{\"\$_/$incl\"})",
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"and -f \"\$_/$incl\" } \@INC);\n");
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print OUT ($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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} 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(/^warning\s+(.*)/) {
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print OUT $t, "warn(\"$1\");\n";
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} elsif(/^ident\s+(.*)/) {
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print OUT $t, "# $1\n";
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}
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} elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?\{/) {
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until(/\}.*?;/) {
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chomp($next = <IN>);
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$_ .= $next;
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print OUT "# $next\n" if $opt_D;
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}
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s@/\*.*?\*/@@g;
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s/\s+/ /g;
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/^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
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($enum_subs = $3) =~ s/\s//g;
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@enum_subs = split(/,/, $enum_subs);
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$enum_val = -1;
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for $enum (@enum_subs) {
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($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;
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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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}
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}
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print OUT "1;\n";
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$is_converted{$file} = 1;
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queue_includes_from($file) if ($opt_a);
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}
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exit $Exit;
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sub reindent($) {
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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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sub expr {
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if(keys(%curargs)) {
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my($joined_args) = join('|', keys(%curargs));
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}
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while ($_ 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 && do {$new .= lc($1); next;};
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s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$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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foreach (split /\s+/, $1) { # Make sure all the words are types,
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last unless ($isatype{$_} or $_ eq 'struct');
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}
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s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
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};
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# struct/union member, including arrays:
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s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
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$id = $1;
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$id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;
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$id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);
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while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {
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my($index) = $1;
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$index =~ s/\s//g;
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if(exists($curargs{$index})) {
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$index = "\$$index";
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} else {
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$index = "&$index";
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}
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$id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;
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}
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$new .= " (\$$id)";
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};
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s/^([_a-zA-Z]\w*)// && do {
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$id = $1;
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if ($id eq 'struct') {
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s/^\s+(\w+)//;
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$id .= ' ' . $1;
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$isatype{$id} = 1;
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} elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {
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while (s/^\s+(\w+)//) { $id .= ' ' . $1; }
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$isatype{$id} = 1;
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}
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if ($curargs{$id}) {
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$new .= "\$$id";
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$new .= '->' if /^[\[\{]/;
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} elsif ($id eq 'defined') {
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$new .= 'defined';
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} elsif (/^\(/) {
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s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
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$new .= " &$id";
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} elsif ($isatype{$id}) {
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if ($new =~ /{\s*$/) {
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$new .= "'$id'";
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} elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {
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$new =~ s/\(\s*$//;
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s/^[\s*]*\)//;
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} else {
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$new .= q(').$id.q(');
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}
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} else {
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if ($inif && $new !~ /defined\s*\($/) {
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$new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
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} elsif (/^\[/) {
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$new .= " \$$id";
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} else {
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$new .= ' &' . $id;
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}
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}
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next;
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};
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s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
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}
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}
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# Handle recursive subdirectories without getting a grotesquely big stack.
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# Could this be implemented using File::Find?
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sub next_file
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{
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my $file;
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while (@ARGV) {
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$file = shift @ARGV;
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if ($file eq '-' or -f $file or -l $file) {
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return $file;
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} elsif (-d $file) {
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if ($opt_r) {
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expand_glob($file);
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} else {
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print STDERR "Skipping directory `$file'\n";
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}
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} elsif ($opt_a) {
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return $file;
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} else {
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print STDERR "Skipping `$file': not a file or directory\n";
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}
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}
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return undef;
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}
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# Put all the files in $directory into @ARGV for processing.
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sub expand_glob
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{
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my ($directory) = @_;
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$directory =~ s:/$::;
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opendir DIR, $directory;
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foreach (readdir DIR) {
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next if ($_ eq '.' or $_ eq '..');
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# expand_glob() is going to be called until $ARGV[0] isn't a
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# directory; so push directories, and unshift everything else.
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if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
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else { unshift @ARGV, "$directory/$_" }
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}
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closedir DIR;
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}
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# Given $file, a symbolic link to a directory in the C include directory,
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# make an equivalent symbolic link in $Dest_dir, if we can figure out how.
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# Otherwise, just duplicate the file or directory.
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sub link_if_possible
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{
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my ($dirlink) = @_;
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my $target = eval 'readlink($dirlink)';
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if ($target =~ m:^\.\./: or $target =~ m:^/:) {
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# The target of a parent or absolute link could leave the $Dest_dir
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# hierarchy, so let's put all of the contents of $dirlink (actually,
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# the contents of $target) into @ARGV; as a side effect down the
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# line, $dirlink will get created as an _actual_ directory.
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expand_glob($dirlink);
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} else {
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if (-l "$Dest_dir/$dirlink") {
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unlink "$Dest_dir/$dirlink" or
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print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
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}
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if (eval 'symlink($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{'installarchlib'}>).
|
|
|
|
=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;
|