codekingpro/portable-devtools
114k
1#!/usr/bin/perl2 eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'3 if 0; # ^ Run only under a shell4 5BEGIN { pop @INC if $INC[-1] eq '.' }6 7use strict;8 9use Config;10use File::Path qw(mkpath);11use Getopt::Std;12 13# Make sure read permissions for all are set:14if (defined umask && (umask() & 0444)) {15 umask (umask() & ~0444);16}17 18getopts('Dd:rlhaQe');19use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e);20die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);21my @inc_dirs = inc_dirs() if $opt_a;22 23my $Exit = 0;24 25my $Dest_dir = $opt_d || $Config{installsitearch};26die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"27 unless -d $Dest_dir;28 29my @isatype = qw(30 char uchar u_char31 short ushort u_short32 int uint u_int33 long ulong u_long34 FILE key_t caddr_t35 float double size_t36);37 38my %isatype;39@isatype{@isatype} = (1) x @isatype;40my $inif = 0;41my %Is_converted;42my %bad_file = ();43 44@ARGV = ('-') unless @ARGV;45 46build_preamble_if_necessary();47 48sub reindent($) {49 my($text) = shift;50 $text =~ s/\n/\n /g;51 $text =~ s/ /\t/g;52 $text;53}54 55my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile);56my ($incl, $incl_type, $incl_quote, $next);57while (defined (my $file = next_file())) {58 if (-l $file and -d $file) {59 link_if_possible($file) if ($opt_l);60 next;61 }62 63 # Recover from header files with unbalanced cpp directives64 $t = '';65 $tab = 0;66 67 # $eval_index goes into '#line' directives, to help locate syntax errors:68 $eval_index = 1;69 70 if ($file eq '-') {71 open(IN, "-");72 open(OUT, ">-");73 } else {74 ($outfile = $file) =~ s/\.h$/.ph/ || next;75 print "$file -> $outfile\n" unless $opt_Q;76 if ($file =~ m|^(.*)/|) {77 $dir = $1;78 mkpath "$Dest_dir/$dir";79 }80 81 if ($opt_a) { # automagic mode: locate header file in @inc_dirs82 foreach (@inc_dirs) {83 chdir $_;84 last if -f $file;85 }86 }87 88 open(IN, "<", "$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next);89 open(OUT, ">", "$Dest_dir/$outfile") || die "Can't create $outfile: $!\n";90 }91 92 print OUT93 "require '_h2ph_pre.ph';\n\n",94 "no warnings qw(redefine misc);\n\n";95 96 while (defined (local $_ = next_line($file))) {97 if (s/^\s*\#\s*//) {98 if (s/^define\s+(\w+)//) {99 $name = $1;100 $new = '';101 s/\s+$//;102 s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0103 if (s/^\(([\w,\s]*)\)//) {104 $args = $1;105 my $proto = '() ';106 if ($args ne '') {107 $proto = '';108 foreach my $arg (split(/,\s*/,$args)) {109 $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;110 $curargs{$arg} = 1;111 }112 $args =~ s/\b(\w)/\$$1/g;113 $args = "my($args) = \@_;\n$t ";114 }115 s/^\s+//;116 expr();117 $new =~ s/(["\\])/\\$1/g; #"]);118 EMIT($proto);119 } else {120 s/^\s+//;121 expr();122 123 $new = 1 if $new eq '';124 125 # Shunt around such directives as '#define FOO FOO':126 next if $new =~ /^\s*&\Q$name\E\s*\z/;127 128 $new = reindent($new);129 $args = reindent($args);130 $new =~ s/(['\\])/\\$1/g; #']);131 132 print OUT $t, 'eval ';133 if ($opt_h) {134 print OUT "\"\\n#line $eval_index $outfile\\n\" . ";135 $eval_index++;136 }137 print OUT "'sub $name () {$new;}' unless defined(&$name);\n";138 }139 } elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) {140 $incl_type = $1;141 $incl_quote = $2;142 $incl = $3;143 if (($incl_type eq 'include_next') ||144 ($opt_e && exists($bad_file{$incl}))) {145 $incl =~ s/\.h$/.ph/;146 print OUT ($t,147 "eval {\n");148 $tab += 4;149 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);150 print OUT ($t, "my(\@REM);\n");151 if ($incl_type eq 'include_next') {152 print OUT ($t,153 "my(\%INCD) = map { \$INC{\$_} => 1 } ",154 "(grep { \$_ eq \"$incl\" } ",155 "keys(\%INC));\n");156 print OUT ($t,157 "\@REM = map { \"\$_/$incl\" } ",158 "(grep { not exists(\$INCD{\"\$_/$incl\"})",159 " and -f \"\$_/$incl\" } \@INC);\n");160 } else {161 print OUT ($t,162 "\@REM = map { \"\$_/$incl\" } ",163 "(grep {-r \"\$_/$incl\" } \@INC);\n");164 }165 print OUT ($t,166 "require \"\$REM[0]\" if \@REM;\n");167 $tab -= 4;168 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);169 print OUT ($t,170 "};\n");171 print OUT ($t,172 "warn(\$\@) if \$\@;\n");173 } else {174 $incl =~ s/\.h$/.ph/;175 # copy the prefix in the quote syntax (#include "x.h") case176 if ($incl !~ m|/| && $incl_quote eq q{"} && $file =~ m|^(.*)/|) {177 $incl = "$1/$incl";178 }179 print OUT $t,"require '$incl';\n";180 }181 } elsif (/^ifdef\s+(\w+)/) {182 print OUT $t,"if(defined(&$1)) {\n";183 $tab += 4;184 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);185 } elsif (/^ifndef\s+(\w+)/) {186 print OUT $t,"unless(defined(&$1)) {\n";187 $tab += 4;188 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);189 } elsif (s/^if\s+//) {190 $new = '';191 $inif = 1;192 expr();193 $inif = 0;194 print OUT $t,"if($new) {\n";195 $tab += 4;196 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);197 } elsif (s/^elif\s+//) {198 $new = '';199 $inif = 1;200 expr();201 $inif = 0;202 $tab -= 4;203 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);204 print OUT $t,"}\n elsif($new) {\n";205 $tab += 4;206 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);207 } elsif (/^else/) {208 $tab -= 4;209 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);210 print OUT $t,"} else {\n";211 $tab += 4;212 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);213 } elsif (/^endif/) {214 $tab -= 4;215 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);216 print OUT $t,"}\n";217 } elsif(/^undef\s+(\w+)/) {218 print OUT $t, "undef(&$1) if defined(&$1);\n";219 } elsif(/^error\s+(".*")/) {220 print OUT $t, "die($1);\n";221 } elsif(/^error\s+(.*)/) {222 print OUT $t, "die(\"", quotemeta($1), "\");\n";223 } elsif(/^warning\s+(.*)/) {224 print OUT $t, "warn(\"", quotemeta($1), "\");\n";225 } elsif(/^ident\s+(.*)/) {226 print OUT $t, "# $1\n";227 }228 } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi229 until(/\{[^}]*\}.*;/ || /;/) {230 last unless defined ($next = next_line($file));231 chomp $next;232 # drop "#define FOO FOO" in enums233 $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;234 # #defines in enums (aliases)235 $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/;236 $_ .= $next;237 print OUT "# $next\n" if $opt_D;238 }239 s/#\s*if.*?#\s*endif//g; # drop #ifdefs240 s@/\*.*?\*/@@g;241 s/\s+/ /g;242 next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;243 (my $enum_subs = $3) =~ s/\s//g;244 my @enum_subs = split(/,/, $enum_subs);245 my $enum_val = -1;246 foreach my $enum (@enum_subs) {247 my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/;248 $enum_name or next;249 $enum_value =~ s/^=//;250 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1);251 if ($opt_h) {252 print OUT ($t,253 "eval(\"\\n#line $eval_index $outfile\\n",254 "sub $enum_name () \{ $enum_val; \}\") ",255 "unless defined(\&$enum_name);\n");256 ++ $eval_index;257 } else {258 print OUT ($t,259 "eval(\"sub $enum_name () \{ $enum_val; \}\") ",260 "unless defined(\&$enum_name);\n");261 }262 }263 } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/264 and !/;\s*$/ and !/{\s*}\s*$/)265 { # { for vi266 # This is a hack to parse the inline functions in the glibc headers.267 # Warning: massive kludge ahead. We suppose inline functions268 # are mainly constructed like macros.269 while (1) {270 last unless defined ($next = next_line($file));271 chomp $next;272 undef $_, last if $next =~ /__THROW\s*;/273 or $next =~ /^(__extension__|extern|static)\b/;274 $_ .= " $next";275 print OUT "# $next\n" if $opt_D;276 last if $next =~ /^}|^{.*}\s*$/;277 }278 next if not defined; # because it's only a prototype279 s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g;280 # violently drop #ifdefs281 s/#\s*if.*?#\s*endif//g282 and print OUT "# some #ifdef were dropped here -- fill in the blanks\n";283 if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) {284 $name = $1;285 } else {286 warn "name not found"; next; # shouldn't occur...287 }288 my @args;289 if (s/^\(([^()]*)\)\s*(\w+\s*)*//) {290 for my $arg (split /,/, $1) {291 if ($arg =~ /(\w+)\s*$/) {292 $curargs{$1} = 1;293 push @args, $1;294 }295 }296 }297 $args = (298 @args299 ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t "300 : ""301 );302 my $proto = @args ? '' : '() ';303 $new = '';304 s/\breturn\b//g; # "return" doesn't occur in macros usually...305 expr();306 # try to find and perlify local C variables307 our @local_variables = (); # needs to be a our(): (?{...}) bug workaround308 {309 use re "eval";310 my $typelist = join '|', keys %isatype;311 $new =~ s['312 (?:(?:__)?const(?:__)?\s+)?313 (?:(?:un)?signed\s+)?314 (?:long\s+)?315 (?:$typelist)\s+316 (\w+)317 (?{ push @local_variables, $1 })318 ']319 [my \$$1]gx;320 $new =~ s['321 (?:(?:__)?const(?:__)?\s+)?322 (?:(?:un)?signed\s+)?323 (?:long\s+)?324 (?:$typelist)\s+325 ' \s+ &(\w+) \s* ;326 (?{ push @local_variables, $1 })327 ]328 [my \$$1;]gx;329 }330 $new =~ s/&$_\b/\$$_/g for @local_variables;331 $new =~ s/(["\\])/\\$1/g; #"]);332 # now that's almost like a macro (we hope)333 EMIT($proto);334 }335 }336 $Is_converted{$file} = 1;337 if ($opt_e && exists($bad_file{$file})) {338 unlink($Dest_dir . '/' . $outfile);339 $next = '';340 } else {341 print OUT "1;\n";342 queue_includes_from($file) if $opt_a;343 }344}345 346if ($opt_e && (scalar(keys %bad_file) > 0)) {347 warn "Was unable to convert the following files:\n";348 warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";349}350 351exit $Exit;352 353sub EMIT {354 my $proto = shift;355 356 $new = reindent($new);357 $args = reindent($args);358 $new =~ s/(['\\])/\\$1/g; #']);359 if ($opt_h) {360 print OUT $t,361 "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";362 $eval_index++;363 } else {364 print OUT $t,365 "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n";366 }367 %curargs = ();368 return;369}370 371sub expr {372 if (/\b__asm__\b/) { # freak out373 $new = '"(assembly code)"';374 return375 }376 my $joined_args;377 if(keys(%curargs)) {378 $joined_args = join('|', keys(%curargs));379 }380 while ($_ ne '') {381 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator382 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of383 s/^(\s+)// && do {$new .= ' '; next;};384 s/^0X([0-9A-F]+)[UL]*//i385 && do {my $hex = $1;386 $hex =~ s/^0+//;387 if (length $hex > 8 && !$Config{use64bitint}) {388 # Croak if nv_preserves_uv_bits < 64 ?389 $new .= hex(substr($hex, -8)) +390 2**32 * hex(substr($hex, 0, -8));391 # The above will produce "erroneous" code392 # if the hex constant was e.g. inside UINT64_C393 # macro, but then again, h2ph is an approximation.394 } else {395 $new .= lc("0x$hex");396 }397 next;};398 s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};399 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};400 s/^("(\\"|[^"])*")// && do {$new .= $1; next;};401 s/^'((\\"|[^"])*)'// && do {402 if ($curargs{$1}) {403 $new .= "ord('\$$1')";404 } else {405 $new .= "ord('$1')";406 }407 next;408 };409 # replace "sizeof(foo)" with "{foo}"410 # also, remove * (C dereference operator) to avoid perl syntax411 # problems. Where the %sizeof array comes from is anyone's412 # guess (c2ph?), but this at least avoids fatal syntax errors.413 # Behavior is undefined if sizeof() delimiters are unbalanced.414 # This code was modified to able to handle constructs like this:415 # sizeof(*(p)), which appear in the HP-UX 10.01 header files.416 s/^sizeof\s*\(// && do {417 $new .= '$sizeof';418 my $lvl = 1; # already saw one open paren419 # tack { on the front, and skip it in the loop420 $_ = "{" . "$_";421 my $index = 1;422 # find balanced closing paren423 while ($index <= length($_) && $lvl > 0) {424 $lvl++ if substr($_, $index, 1) eq "(";425 $lvl-- if substr($_, $index, 1) eq ")";426 $index++;427 }428 # tack } on the end, replacing )429 substr($_, $index - 1, 1) = "}";430 # remove pesky * operators within the sizeof argument431 substr($_, 0, $index - 1) =~ s/\*//g;432 next;433 };434 # Eliminate typedefs435 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {436 my $doit = 1;437 foreach (split /\s+/, $1) { # Make sure all the words are types,438 unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){439 $doit = 0;440 last;441 }442 }443 if( $doit ){444 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.445 }446 };447 # struct/union member, including arrays:448 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {449 my $id = $1;450 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g;451 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args);452 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) {453 my($index) = $1;454 $index =~ s/\s//g;455 if(exists($curargs{$index})) {456 $index = "\$$index";457 } else {458 $index = "&$index";459 }460 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/;461 }462 $new .= " (\$$id)";463 };464 s/^([_a-zA-Z]\w*)// && do {465 my $id = $1;466 if ($id eq 'struct' || $id eq 'union') {467 s/^\s+(\w+)//;468 $id .= ' ' . $1;469 $isatype{$id} = 1;470 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) {471 while (s/^\s+(\w+)//) { $id .= ' ' . $1; }472 $isatype{$id} = 1;473 }474 if ($curargs{$id}) {475 $new .= "\$$id";476 $new .= '->' if /^[\[\{]/;477 } elsif ($id eq 'defined') {478 $new .= 'defined';479 } elsif (/^\s*\(/) {480 s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat481 $new .= " &$id";482 } elsif ($isatype{$id}) {483 if ($new =~ /\{\s*$/) {484 $new .= "'$id'";485 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) {486 $new =~ s/\(\s*$//;487 s/^[\s*]*\)//;488 } else {489 $new .= q(').$id.q(');490 }491 } else {492 if ($inif) {493 if ($new =~ /defined\s*$/) {494 $new .= '(&' . $id . ')';495 } elsif ($new =~ /defined\s*\($/) {496 $new .= '&' . $id;497 } else {498 $new .= '(defined(&' . $id . ') ? &' . $id . ' : undef)';499 }500 } elsif (/^\[/) {501 $new .= " \$$id";502 } else {503 $new .= ' &' . $id;504 }505 }506 next;507 };508 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};509 }510}511 512 513sub next_line514{515 my $file = shift;516 my ($in, $out);517 my $pre_sub_tri_graphs = 1;518 519 READ: while (not eof IN) {520 $in .= <IN>;521 chomp $in;522 next unless length $in;523 524 while (length $in) {525 if ($pre_sub_tri_graphs) {526 # Preprocess all tri-graphs527 # including things stuck in quoted string constants.528 $in =~ s/\?\?=/#/g; # | ??=| #|529 $in =~ s/\?\?\!/|/g; # | ??!| ||530 $in =~ s/\?\?'/^/g; # | ??'| ^|531 $in =~ s/\?\?\(/[/g; # | ??(| [|532 $in =~ s/\?\?\)/]/g; # | ??)| ]|533 $in =~ s/\?\?\-/~/g; # | ??-| ~|534 $in =~ s/\?\?\//\\/g; # | ??/| \|535 $in =~ s/\?\?</{/g; # | ??<| {|536 $in =~ s/\?\?>/}/g; # | ??>| }|537 }538 if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {539 # Tru64 disassembler.h evilness: mixed C and Pascal.540 while (<IN>) {541 last if /^\#endif/;542 }543 $in = "";544 next READ;545 }546 if ($in =~ /^extern inline / && # Inlined assembler.547 $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {548 while (<IN>) {549 last if /^}/;550 }551 $in = "";552 next READ;553 }554 if ($in =~ s/\\$//) { # \-newline555 $out .= ' ';556 next READ;557 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough558 $out .= $1;559 } elsif ($in =~ s/^(\\.)//) { # \...560 $out .= $1;561 } elsif ($in =~ /^'/) { # '...562 if ($in =~ s/^('(\\.|[^'\\])*')//) {563 $out .= $1;564 } else {565 next READ;566 }567 } elsif ($in =~ /^"/) { # "...568 if ($in =~ s/^("(\\.|[^"\\])*")//) {569 $out .= $1;570 } else {571 next READ;572 }573 } elsif ($in =~ s/^\/\/.*//) { # //...574 # fall through575 } elsif ($in =~ m/^\/\*/) { # /*...576 # C comment removal adapted from perlfaq6:577 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {578 $out .= ' ';579 } else { # Incomplete /* */580 next READ;581 }582 } elsif ($in =~ s/^(\/)//) { # /...583 $out .= $1;584 } elsif ($in =~ s/^([^\'\"\\\/]+)//) {585 $out .= $1;586 } elsif ($^O eq 'linux' &&587 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&588 $in =~ s!\'T KNOW!!) {589 $out =~ s!I DON$!I_DO_NOT_KNOW!;590 } else {591 if ($opt_e) {592 warn "Cannot parse $file:\n$in\n";593 $bad_file{$file} = 1;594 $in = '';595 $out = undef;596 last READ;597 } else {598 die "Cannot parse:\n$in\n";599 }600 }601 }602 603 last READ if $out =~ /\S/;604 }605 606 return $out;607}608 609 610# Handle recursive subdirectories without getting a grotesquely big stack.611# Could this be implemented using File::Find?612sub next_file613{614 my $file;615 616 while (@ARGV) {617 $file = shift @ARGV;618 619 if ($file eq '-' or -f $file or -l $file) {620 return $file;621 } elsif (-d $file) {622 if ($opt_r) {623 expand_glob($file);624 } else {625 print STDERR "Skipping directory '$file'\n";626 }627 } elsif ($opt_a) {628 return $file;629 } else {630 print STDERR "Skipping '$file': not a file or directory\n";631 }632 }633 634 return undef;635}636 637 638# Put all the files in $directory into @ARGV for processing.639sub expand_glob640{641 my ($directory) = @_;642 643 $directory =~ s:/$::;644 645 opendir DIR, $directory;646 foreach (readdir DIR) {647 next if ($_ eq '.' or $_ eq '..');648 649 # expand_glob() is going to be called until $ARGV[0] isn't a650 # directory; so push directories, and unshift everything else.651 if (-d "$directory/$_") { push @ARGV, "$directory/$_" }652 else { unshift @ARGV, "$directory/$_" }653 }654 closedir DIR;655}656 657 658# Given $file, a symbolic link to a directory in the C include directory,659# make an equivalent symbolic link in $Dest_dir, if we can figure out how.660# Otherwise, just duplicate the file or directory.661sub link_if_possible662{663 my ($dirlink) = @_;664 my $target = eval 'readlink($dirlink)';665 666 if ($target =~ m:^\.\./: or $target =~ m:^/:) {667 # The target of a parent or absolute link could leave the $Dest_dir668 # hierarchy, so let's put all of the contents of $dirlink (actually,669 # the contents of $target) into @ARGV; as a side effect down the670 # line, $dirlink will get created as an _actual_ directory.671 expand_glob($dirlink);672 } else {673 if (-l "$Dest_dir/$dirlink") {674 unlink "$Dest_dir/$dirlink" or675 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";676 }677 678 if (eval 'symlink($target, "$Dest_dir/$dirlink")') {679 print "Linking $target -> $Dest_dir/$dirlink\n";680 681 # Make sure that the link _links_ to something:682 if (! -e "$Dest_dir/$target") {683 mkpath("$Dest_dir/$target", 0755) or684 print STDERR "Could not create $Dest_dir/$target/\n";685 }686 } else {687 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";688 }689 }690}691 692 693# Push all #included files in $file onto our stack, except for STDIN694# and files we've already processed.695sub queue_includes_from696{697 my ($file) = @_;698 my $line;699 700 return if ($file eq "-");701 702 open HEADER, "<", $file or return;703 while (defined($line = <HEADER>)) {704 while (/\\$/) { # Handle continuation lines705 chop $line;706 $line .= <HEADER>;707 }708 709 if ($line =~ /^#\s*include\s+([<"])(.*?)[>"]/) {710 my ($delimiter, $new_file) = ($1, $2);711 # copy the prefix in the quote syntax (#include "x.h") case712 if ($delimiter eq q{"} && $file =~ m|^(.*)/|) {713 $new_file = "$1/$new_file";714 }715 push(@ARGV, $new_file) unless $Is_converted{$new_file};716 }717 }718 close HEADER;719}720 721 722# Determine include directories; $Config{usrinc} should be enough for (all723# non-GCC?) C compilers, but gcc uses additional include directories.724sub inc_dirs725{726 my $from_gcc = `LC_ALL=C $Config{cc} -v -E - < /dev/null 2>&1 | awk '/^#include/, /^End of search list/' | grep '^ '`;727 length($from_gcc) ? (split(' ', $from_gcc), $Config{usrinc}) : ($Config{usrinc});728}729 730 731# Create "_h2ph_pre.ph", if it doesn't exist or was built by a different732# version of h2ph.733sub build_preamble_if_necessary734{735 # Increment $VERSION every time this function is modified:736 my $VERSION = 5;737 my $preamble = "$Dest_dir/_h2ph_pre.ph";738 739 # Can we skip building the preamble file?740 if (-r $preamble) {741 # Extract version number from first line of preamble:742 open PREAMBLE, "<", $preamble or die "Cannot open $preamble: $!";743 my $line = <PREAMBLE>;744 $line =~ /(\b\d+\b)/;745 close PREAMBLE or die "Cannot close $preamble: $!";746 747 # Don't build preamble if a compatible preamble exists:748 return if $1 == $VERSION;749 }750 751 my (%define) = _extract_cc_defines();752 753 open PREAMBLE, ">", $preamble or die "Cannot open $preamble: $!";754 print PREAMBLE "# This file was created by h2ph version $VERSION\n";755 # Prevent non-portable hex constants from warning.756 #757 # We still produce an overflow warning if we can't represent758 # a hex constant as an integer.759 print PREAMBLE "no warnings qw(portable);\n";760 761 foreach (sort keys %define) {762 if ($opt_D) {763 print PREAMBLE "# $_=$define{$_}\n";764 }765 if ($define{$_} =~ /^\((.*)\)$/) {766 # parenthesized value: d=(v)767 $define{$_} = $1;768 }769 if (/^(\w+)\((\w)\)$/) {770 my($macro, $arg) = ($1, $2);771 my $def = $define{$_};772 $def =~ s/$arg/\$\{$arg\}/g;773 print PREAMBLE <<DEFINE;774sub $macro(\$) { my (\$$arg) = \@_; \"$def\" }775 776DEFINE777 } elsif778 ($define{$_} =~ /^([+-]?(\d+)?\.\d+([eE][+-]?\d+)?)[FL]?$/) {779 # float:780 print PREAMBLE "sub $_() { $1 }\n\n";781 } elsif ($define{$_} =~ /^([+-]?\d+)U?L{0,2}$/i) {782 # integer:783 print PREAMBLE "sub $_() { $1 }\n\n";784 } elsif ($define{$_} =~ /^([+-]?0x[\da-f]+)U?L{0,2}$/i) {785 # hex integer786 # Special cased, since perl warns on hex integers787 # that can't be represented in a UV.788 #789 # This way we get the warning at time of use, so the user790 # only gets the warning if they happen to use this791 # platform-specific definition.792 my $code = $1;793 $code = "hex('$code')" if length $code > 10;794 print PREAMBLE "sub $_() { $code }\n\n";795 } elsif ($define{$_} =~ /^\w+$/) {796 my $def = $define{$_};797 if ($isatype{$def}) {798 print PREAMBLE "sub $_() { \"$def\" }\n\n";799 } else {800 print PREAMBLE "sub $_() { &$def }\n\n";801 }802 } else {803 print PREAMBLE "sub $_() { \"\Q$define{$_}\E\" }\n\n";804 }805 }806 print PREAMBLE "\n1;\n"; # avoid 'did not return a true value' when empty807 close PREAMBLE or die "Cannot close $preamble: $!";808}809 810 811# %Config contains information on macros that are pre-defined by the812# system's compiler. We need this information to make the .ph files813# function with perl as the .h files do with cc.814sub _extract_cc_defines815{816 my %define;817 my $allsymbols = join " ",818 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'};819 820 # Split compiler pre-definitions into 'key=value' pairs:821 while ($allsymbols =~ /([^\s]+)=((\\\s|[^\s])+)/g) {822 $define{$1} = $2;823 if ($opt_D) {824 print STDERR "$_: $1 -> $2\n";825 }826 }827 828 return %define;829}830 831 8321;833 834##############################################################################835__END__836 837=head1 NAME838 839h2ph - convert .h C header files to .ph Perl header files840 841=head1 SYNOPSIS842 843B<h2ph [-d destination directory] [-r | -a] [-l] [-h] [-e] [-D] [-Q]844[headerfiles]>845 846=head1 DESCRIPTION847 848I<h2ph>849converts any C header files specified to the corresponding Perl header file850format.851It is most easily run while in /usr/include:852 853 cd /usr/include; h2ph * sys/*854 855or856 857 cd /usr/include; h2ph * sys/* arpa/* netinet/*858 859or860 861 cd /usr/include; h2ph -r -l .862 863The output files are placed in the hierarchy rooted at Perl's864architecture dependent library directory. You can specify a different865hierarchy with a B<-d> switch.866 867If run with no arguments, filters standard input to standard output.868 869=head1 OPTIONS870 871=over 4872 873=item -d destination_dir874 875Put the resulting B<.ph> files beneath B<destination_dir>, instead of876beneath the default Perl library location (C<$Config{'installsitearch'}>).877 878=item -r879 880Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>881on all files in those directories (and their subdirectories, etc.). B<-r>882and B<-a> are mutually exclusive.883 884=item -a885 886Run automagically; convert B<headerfiles>, as well as any B<.h> files887which they include. This option will search for B<.h> files in all888directories which your C compiler ordinarily uses. B<-a> and B<-r> are889mutually exclusive.890 891=item -l892 893Symbolic links will be replicated in the destination directory. If B<-l>894is not specified, then links are skipped over.895 896=item -h897 898Put 'hints' in the .ph files which will help in locating problems with899I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax900errors, instead of the cryptic901 902 [ some error condition ] at (eval mmm) line nnn903 904you will see the slightly more helpful905 906 [ some error condition ] at filename.ph line nnn907 908However, the B<.ph> files almost double in size when built using B<-h>.909 910=item -e911 912If an error is encountered during conversion, output file will be removed and913a warning emitted instead of terminating the conversion immediately.914 915=item -D916 917Include the code from the B<.h> file as a comment in the B<.ph> file.918This is primarily used for debugging I<h2ph>.919 920=item -Q921 922'Quiet' mode; don't print out the names of the files being converted.923 924=back925 926=head1 ENVIRONMENT927 928No environment variables are used.929 930=head1 FILES931 932 /usr/include/*.h933 /usr/include/sys/*.h934 935etc.936 937=head1 AUTHOR938 939Larry Wall940 941=head1 SEE ALSO942 943perl(1)944 945=head1 DIAGNOSTICS946 947The usual warnings if it can't read or write the files involved.948 949=head1 BUGS950 951Doesn't construct the %sizeof array for you.952 953It doesn't handle all C constructs, but it does attempt to isolate954definitions inside evals so that you can get at the definitions955that it can translate.956 957It's only intended as a rough tool.958You may need to dicker with the files produced.959 960You have to run this program by hand; it's not run as part of the Perl961installation.962 963Doesn't handle complicated expressions built piecemeal, a la:964 965 enum {966 FIRST_VALUE,967 SECOND_VALUE,968 #ifdef ABC969 THIRD_VALUE970 #endif971 };972 973Doesn't necessarily locate all of your C compiler's internally-defined974symbols.975 976=cut977 978