| #!/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 $Config{perlpath} -S \$0 \${1+"\$@"}' |
| if \$running_under_some_shell; |
| !GROK!THIS! |
| |
| # In the following, perl variables are not expanded during extraction. |
| |
| print OUT <<'!NO!SUBS!'; |
| |
| use strict; |
| |
| use Config; |
| use File::Path qw(mkpath); |
| use Getopt::Std; |
| |
| # Make sure read permissions for all are set: |
| if (defined umask && (umask() & 0444)) { |
| umask (umask() & ~0444); |
| } |
| |
| getopts('Dd:rlhaQe'); |
| use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e); |
| die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); |
| my @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; |
| |
| my @isatype = qw( |
| char uchar u_char |
| short ushort u_short |
| int uint u_int |
| long ulong u_long |
| FILE key_t caddr_t |
| float double size_t |
| ); |
| |
| my %isatype; |
| @isatype{@isatype} = (1) x @isatype; |
| my $inif = 0; |
| my %Is_converted; |
| my %bad_file = (); |
| |
| @ARGV = ('-') unless @ARGV; |
| |
| build_preamble_if_necessary(); |
| |
| sub reindent($) { |
| my($text) = shift; |
| $text =~ s/\n/\n /g; |
| $text =~ s/ /\t/g; |
| $text; |
| } |
| |
| my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); |
| my ($incl, $incl_type, $incl_quote, $next); |
| while (defined (my $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"; |
| } |
| |
| print OUT |
| "require '_h2ph_pre.ph';\n\n", |
| "no warnings qw(redefine misc);\n\n"; |
| |
| while (defined (local $_ = next_line($file))) { |
| if (s/^\s*\#\s*//) { |
| if (s/^define\s+(\w+)//) { |
| $name = $1; |
| $new = ''; |
| s/\s+$//; |
| s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 |
| if (s/^\(([\w,\s]*)\)//) { |
| $args = $1; |
| my $proto = '() '; |
| if ($args ne '') { |
| $proto = ''; |
| foreach my $arg (split(/,\s*/,$args)) { |
| $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; |
| $curargs{$arg} = 1; |
| } |
| $args =~ s/\b(\w)/\$$1/g; |
| $args = "my($args) = \@_;\n$t "; |
| } |
| s/^\s+//; |
| expr(); |
| $new =~ s/(["\\])/\\$1/g; #"]); |
| EMIT($proto); |
| } else { |
| s/^\s+//; |
| expr(); |
| |
| $new = 1 if $new eq ''; |
| |
| # Shunt around such directives as '#define FOO FOO': |
| next if $new =~ /^\s*&\Q$name\E\s*\z/; |
| |
| $new = reindent($new); |
| $args = reindent($args); |
| $new =~ s/(['\\])/\\$1/g; #']); |
| |
| print OUT $t, 'eval '; |
| if ($opt_h) { |
| print OUT "\"\\n#line $eval_index $outfile\\n\" . "; |
| $eval_index++; |
| } |
| print OUT "'sub $name () {$new;}' unless defined(&$name);\n"; |
| } |
| } elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) { |
| $incl_type = $1; |
| $incl_quote = $2; |
| $incl = $3; |
| if (($incl_type eq 'include_next') || |
| ($opt_e && exists($bad_file{$incl}))) { |
| $incl =~ s/\.h$/.ph/; |
| print OUT ($t, |
| "eval {\n"); |
| $tab += 4; |
| $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
| print OUT ($t, "my(\@REM);\n"); |
| if ($incl_type eq 'include_next') { |
| print OUT ($t, |
| "my(\%INCD) = map { \$INC{\$_} => 1 } ", |
| "(grep { \$_ eq \"$incl\" } ", |
| "keys(\%INC));\n"); |
| print OUT ($t, |
| "\@REM = map { \"\$_/$incl\" } ", |
| "(grep { not exists(\$INCD{\"\$_/$incl\"})", |
| " and -f \"\$_/$incl\" } \@INC);\n"); |
| } else { |
| print OUT ($t, |
| "\@REM = map { \"\$_/$incl\" } ", |
| "(grep {-r \"\$_/$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"); |
| } else { |
| $incl =~ s/\.h$/.ph/; |
| # copy the prefix in the quote syntax (#include "x.h") case |
| if ($incl !~ m|/| && $incl_quote eq q{"} && $file =~ m|^(.*)/|) { |
| $incl = "$1/$incl"; |
| } |
| print OUT $t,"require '$incl';\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(/^error\s+(.*)/) { |
| print OUT $t, "die(\"", quotemeta($1), "\");\n"; |
| } elsif(/^warning\s+(.*)/) { |
| print OUT $t, "warn(\"", quotemeta($1), "\");\n"; |
| } elsif(/^ident\s+(.*)/) { |
| print OUT $t, "# $1\n"; |
| } |
| } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi |
| until(/\{[^}]*\}.*;/ || /;/) { |
| last unless defined ($next = next_line($file)); |
| chomp $next; |
| # drop "#define FOO FOO" in enums |
| $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; |
| # #defines in enums (aliases) |
| $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/; |
| $_ .= $next; |
| print OUT "# $next\n" if $opt_D; |
| } |
| s/#\s*if.*?#\s*endif//g; # drop #ifdefs |
| s@/\*.*?\*/@@g; |
| s/\s+/ /g; |
| next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; |
| (my $enum_subs = $3) =~ s/\s//g; |
| my @enum_subs = split(/,/, $enum_subs); |
| my $enum_val = -1; |
| foreach my $enum (@enum_subs) { |
| my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; |
| $enum_name or next; |
| $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"); |
| } |
| } |
| } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/ |
| and !/;\s*$/ and !/{\s*}\s*$/) |
| { # { for vi |
| # This is a hack to parse the inline functions in the glibc headers. |
| # Warning: massive kludge ahead. We suppose inline functions |
| # are mainly constructed like macros. |
| while (1) { |
| last unless defined ($next = next_line($file)); |
| chomp $next; |
| undef $_, last if $next =~ /__THROW\s*;/ |
| or $next =~ /^(__extension__|extern|static)\b/; |
| $_ .= " $next"; |
| print OUT "# $next\n" if $opt_D; |
| last if $next =~ /^}|^{.*}\s*$/; |
| } |
| next if not defined; # because it's only a prototype |
| s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g; |
| # violently drop #ifdefs |
| s/#\s*if.*?#\s*endif//g |
| and print OUT "# some #ifdef were dropped here -- fill in the blanks\n"; |
| if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) { |
| $name = $1; |
| } else { |
| warn "name not found"; next; # shouldn't occur... |
| } |
| my @args; |
| if (s/^\(([^()]*)\)\s*(\w+\s*)*//) { |
| for my $arg (split /,/, $1) { |
| if ($arg =~ /(\w+)\s*$/) { |
| $curargs{$1} = 1; |
| push @args, $1; |
| } |
| } |
| } |
| $args = ( |
| @args |
| ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t " |
| : "" |
| ); |
| my $proto = @args ? '' : '() '; |
| $new = ''; |
| s/\breturn\b//g; # "return" doesn't occur in macros usually... |
| expr(); |
| # try to find and perlify local C variables |
| our @local_variables = (); # needs to be a our(): (?{...}) bug workaround |
| { |
| use re "eval"; |
| my $typelist = join '|', keys %isatype; |
| $new =~ s[' |
| (?:(?:__)?const(?:__)?\s+)? |
| (?:(?:un)?signed\s+)? |
| (?:long\s+)? |
| (?:$typelist)\s+ |
| (\w+) |
| (?{ push @local_variables, $1 }) |
| '] |
| [my \$$1]gx; |
| $new =~ s[' |
| (?:(?:__)?const(?:__)?\s+)? |
| (?:(?:un)?signed\s+)? |
| (?:long\s+)? |
| (?:$typelist)\s+ |
| ' \s+ &(\w+) \s* ; |
| (?{ push @local_variables, $1 }) |
| ] |
| [my \$$1;]gx; |
| } |
| $new =~ s/&$_\b/\$$_/g for @local_variables; |
| $new =~ s/(["\\])/\\$1/g; #"]); |
| # now that's almost like a macro (we hope) |
| EMIT($proto); |
| } |
| } |
| $Is_converted{$file} = 1; |
| if ($opt_e && exists($bad_file{$file})) { |
| unlink($Dest_dir . '/' . $outfile); |
| $next = ''; |
| } else { |
| print OUT "1;\n"; |
| queue_includes_from($file) if $opt_a; |
| } |
| } |
| |
| if ($opt_e && (scalar(keys %bad_file) > 0)) { |
| warn "Was unable to convert the following files:\n"; |
| warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n"; |
| } |
| |
| exit $Exit; |
| |
| sub EMIT { |
| my $proto = shift; |
| |
| $new = reindent($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 = (); |
| return; |
| } |
| |
| sub expr { |
| if (/\b__asm__\b/) { # freak out |
| $new = '"(assembly code)"'; |
| return |
| } |
| my $joined_args; |
| if(keys(%curargs)) { |
| $joined_args = join('|', keys(%curargs)); |
| } |
| while ($_ 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 {my $hex = $1; |
| $hex =~ s/^0+//; |
| if (length $hex > 8 && !$Config{use64bitint}) { |
| # Croak if nv_preserves_uv_bits < 64 ? |
| $new .= hex(substr($hex, -8)) + |
| 2**32 * hex(substr($hex, 0, -8)); |
| # The above will produce "erroneous" code |
| # if the hex constant was e.g. inside UINT64_C |
| # macro, but then again, h2ph is an approximation. |
| } else { |
| $new .= lc("0x$hex"); |
| } |
| next;}; |
| s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//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 { |
| my $doit = 1; |
| foreach (split /\s+/, $1) { # Make sure all the words are types, |
| unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){ |
| $doit = 0; |
| last; |
| } |
| } |
| if( $doit ){ |
| s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. |
| } |
| }; |
| # 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 = 3; |
| my $preamble = "$Dest_dir/_h2ph_pre.ph"; |
| |
| # Can we skip building the preamble file? |
| if (-r $preamble) { |
| # Extract version number from first line of preamble: |
| open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; |
| my $line = <PREAMBLE>; |
| $line =~ /(\b\d+\b)/; |
| close PREAMBLE or die "Cannot close $preamble: $!"; |
| |
| # Don't build preamble if a compatible preamble exists: |
| return if $1 == $VERSION; |
| } |
| |
| my (%define) = _extract_cc_defines(); |
| |
| open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; |
| print PREAMBLE "# This file was created by h2ph version $VERSION\n"; |
| |
| foreach (sort keys %define) { |
| if ($opt_D) { |
| print PREAMBLE "# $_=$define{$_}\n"; |
| } |
| if ($define{$_} =~ /^\((.*)\)$/) { |
| # 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{$_} =~ /^\w+$/) { |
| 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 -> $2\n"; |
| } |
| } |
| |
| return %define; |
| } |
| |
| |
| 1; |
| |
| ############################################################################## |
| __END__ |
| |
| =head1 NAME |
| |
| h2ph - convert .h C header files to .ph Perl header files |
| |
| =head1 SYNOPSIS |
| |
| B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> |
| |
| =head1 DESCRIPTION |
| |
| I<h2ph> |
| converts any C header files specified to the corresponding Perl header file |
| format. |
| It is most easily run while in /usr/include: |
| |
| cd /usr/include; h2ph * sys/* |
| |
| or |
| |
| cd /usr/include; h2ph * sys/* arpa/* netinet/* |
| |
| or |
| |
| cd /usr/include; h2ph -r -l . |
| |
| The output files are placed in the hierarchy rooted at Perl's |
| architecture dependent library directory. You can specify a different |
| hierarchy with a B<-d> switch. |
| |
| If run with no arguments, filters standard input to standard output. |
| |
| =head1 OPTIONS |
| |
| =over 4 |
| |
| =item -d destination_dir |
| |
| Put the resulting B<.ph> files beneath B<destination_dir>, instead of |
| beneath the default Perl library location (C<$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 -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 |
| |
| !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; |