1#!/usr/local/bin/perl 2 3use Config; 4use File::Basename qw(basename dirname); 5use Cwd; 6 7# List explicitly here the variables you want Configure to 8# generate. Metaconfig only looks for shell variables, so you 9# have to mention them as if they were shell variables, not 10# %Config entries. Thus you write 11# $startperl 12# to ensure Configure will look for $Config{startperl}. 13# Wanted: $archlibexp 14 15# This forces PL files to create target in same directory as PL file. 16# This is so that make depend always knows where to find PL derivatives. 17$origdir = cwd; 18chdir dirname($0); 19$file = basename($0, '.PL'); 20$file .= '.com' if $^O eq 'VMS'; 21 22open OUT, '>', $file or die "Can't create $file: $!"; 23 24print "Extracting $file (with variable substitutions)\n"; 25 26# In this section, perl variables will be expanded during extraction. 27# You can use $Config{...} to use Configure variables. 28 29print OUT <<"!GROK!THIS!"; 30$Config{startperl} 31 eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' 32 if \$running_under_some_shell; 33!GROK!THIS! 34 35# In the following, perl variables are not expanded during extraction. 36 37print OUT <<'!NO!SUBS!'; 38 39BEGIN { pop @INC if $INC[-1] eq '.' } 40 41use strict; 42 43use Config; 44use File::Path qw(mkpath); 45use Getopt::Std; 46 47# Make sure read permissions for all are set: 48if (defined umask && (umask() & 0444)) { 49 umask (umask() & ~0444); 50} 51 52getopts('Dd:rlhaQe'); 53use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e); 54die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); 55my @inc_dirs = inc_dirs() if $opt_a; 56 57my $Exit = 0; 58 59my $Dest_dir = $opt_d || $Config{installsitearch}; 60die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" 61 unless -d $Dest_dir; 62 63my @isatype = qw( 64 char uchar u_char 65 short ushort u_short 66 int uint u_int 67 long ulong u_long 68 FILE key_t caddr_t 69 float double size_t 70); 71 72my %isatype; 73@isatype{@isatype} = (1) x @isatype; 74my $inif = 0; 75my %Is_converted; 76my %bad_file = (); 77 78@ARGV = ('-') unless @ARGV; 79 80build_preamble_if_necessary(); 81 82sub reindent($) { 83 my($text) = shift; 84 $text =~ s/\n/\n /g; 85 $text =~ s/ /\t/g; 86 $text; 87} 88 89my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); 90my ($incl, $incl_type, $incl_quote, $next); 91while (defined (my $file = next_file())) { 92 if (-l $file and -d $file) { 93 link_if_possible($file) if ($opt_l); 94 next; 95 } 96 97 # Recover from header files with unbalanced cpp directives 98 $t = ''; 99 $tab = 0; 100 101 # $eval_index goes into '#line' directives, to help locate syntax errors: 102 $eval_index = 1; 103 104 if ($file eq '-') { 105 open(IN, "-"); 106 open(OUT, ">-"); 107 } else { 108 ($outfile = $file) =~ s/\.h$/.ph/ || next; 109 print "$file -> $outfile\n" unless $opt_Q; 110 if ($file =~ m|^(.*)/|) { 111 $dir = $1; 112 mkpath "$Dest_dir/$dir"; 113 } 114 115 if ($opt_a) { # automagic mode: locate header file in @inc_dirs 116 foreach (@inc_dirs) { 117 chdir $_; 118 last if -f $file; 119 } 120 } 121 122 open(IN, "<", "$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); 123 open(OUT, ">", "$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; 124 } 125 126 print OUT 127 "require '_h2ph_pre.ph';\n\n", 128 "no warnings qw(redefine misc);\n\n"; 129 130 while (defined (local $_ = next_line($file))) { 131 if (s/^\s*\#\s*//) { 132 if (s/^define\s+(\w+)//) { 133 $name = $1; 134 $new = ''; 135 s/\s+$//; 136 s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 137 if (s/^\(([\w,\s]*)\)//) { 138 $args = $1; 139 my $proto = '() '; 140 if ($args ne '') { 141 $proto = ''; 142 foreach my $arg (split(/,\s*/,$args)) { 143 $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; 144 $curargs{$arg} = 1; 145 } 146 $args =~ s/\b(\w)/\$$1/g; 147 $args = "my($args) = \@_;\n$t "; 148 } 149 s/^\s+//; 150 expr(); 151 $new =~ s/(["\\])/\\$1/g; #"]); 152 EMIT($proto); 153 } else { 154 s/^\s+//; 155 expr(); 156 157 $new = 1 if $new eq ''; 158 159 # Shunt around such directives as '#define FOO FOO': 160 next if $new =~ /^\s*&\Q$name\E\s*\z/; 161 162 $new = reindent($new); 163 $args = reindent($args); 164 $new =~ s/(['\\])/\\$1/g; #']); 165 166 print OUT $t, 'eval '; 167 if ($opt_h) { 168 print OUT "\"\\n#line $eval_index $outfile\\n\" . "; 169 $eval_index++; 170 } 171 print OUT "'sub $name () {$new;}' unless defined(&$name);\n"; 172 } 173 } elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) { 174 $incl_type = $1; 175 $incl_quote = $2; 176 $incl = $3; 177 if (($incl_type eq 'include_next') || 178 ($opt_e && exists($bad_file{$incl}))) { 179 $incl =~ s/\.h$/.ph/; 180 print OUT ($t, 181 "eval {\n"); 182 $tab += 4; 183 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 184 print OUT ($t, "my(\@REM);\n"); 185 if ($incl_type eq 'include_next') { 186 print OUT ($t, 187 "my(\%INCD) = map { \$INC{\$_} => 1 } ", 188 "(grep { \$_ eq \"$incl\" } ", 189 "keys(\%INC));\n"); 190 print OUT ($t, 191 "\@REM = map { \"\$_/$incl\" } ", 192 "(grep { not exists(\$INCD{\"\$_/$incl\"})", 193 " and -f \"\$_/$incl\" } \@INC);\n"); 194 } else { 195 print OUT ($t, 196 "\@REM = map { \"\$_/$incl\" } ", 197 "(grep {-r \"\$_/$incl\" } \@INC);\n"); 198 } 199 print OUT ($t, 200 "require \"\$REM[0]\" if \@REM;\n"); 201 $tab -= 4; 202 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 203 print OUT ($t, 204 "};\n"); 205 print OUT ($t, 206 "warn(\$\@) if \$\@;\n"); 207 } else { 208 $incl =~ s/\.h$/.ph/; 209 # copy the prefix in the quote syntax (#include "x.h") case 210 if ($incl !~ m|/| && $incl_quote eq q{"} && $file =~ m|^(.*)/|) { 211 $incl = "$1/$incl"; 212 } 213 print OUT $t,"require '$incl';\n"; 214 } 215 } elsif (/^ifdef\s+(\w+)/) { 216 print OUT $t,"if(defined(&$1)) {\n"; 217 $tab += 4; 218 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 219 } elsif (/^ifndef\s+(\w+)/) { 220 print OUT $t,"unless(defined(&$1)) {\n"; 221 $tab += 4; 222 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 223 } elsif (s/^if\s+//) { 224 $new = ''; 225 $inif = 1; 226 expr(); 227 $inif = 0; 228 print OUT $t,"if($new) {\n"; 229 $tab += 4; 230 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 231 } elsif (s/^elif\s+//) { 232 $new = ''; 233 $inif = 1; 234 expr(); 235 $inif = 0; 236 $tab -= 4; 237 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 238 print OUT $t,"}\n elsif($new) {\n"; 239 $tab += 4; 240 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 241 } elsif (/^else/) { 242 $tab -= 4; 243 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 244 print OUT $t,"} else {\n"; 245 $tab += 4; 246 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 247 } elsif (/^endif/) { 248 $tab -= 4; 249 $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); 250 print OUT $t,"}\n"; 251 } elsif(/^undef\s+(\w+)/) { 252 print OUT $t, "undef(&$1) if defined(&$1);\n"; 253 } elsif(/^error\s+(".*")/) { 254 print OUT $t, "die($1);\n"; 255 } elsif(/^error\s+(.*)/) { 256 print OUT $t, "die(\"", quotemeta($1), "\");\n"; 257 } elsif(/^warning\s+(.*)/) { 258 print OUT $t, "warn(\"", quotemeta($1), "\");\n"; 259 } elsif(/^ident\s+(.*)/) { 260 print OUT $t, "# $1\n"; 261 } 262 } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi 263 until(/\{[^}]*\}.*;/ || /;/) { 264 last unless defined ($next = next_line($file)); 265 chomp $next; 266 # drop "#define FOO FOO" in enums 267 $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; 268 # #defines in enums (aliases) 269 $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/; 270 $_ .= $next; 271 print OUT "# $next\n" if $opt_D; 272 } 273 s/#\s*if.*?#\s*endif//g; # drop #ifdefs 274 s@/\*.*?\*/@@g; 275 s/\s+/ /g; 276 next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; 277 (my $enum_subs = $3) =~ s/\s//g; 278 my @enum_subs = split(/,/, $enum_subs); 279 my $enum_val = -1; 280 foreach my $enum (@enum_subs) { 281 my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; 282 $enum_name or next; 283 $enum_value =~ s/^=//; 284 $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); 285 if ($opt_h) { 286 print OUT ($t, 287 "eval(\"\\n#line $eval_index $outfile\\n", 288 "sub $enum_name () \{ $enum_val; \}\") ", 289 "unless defined(\&$enum_name);\n"); 290 ++ $eval_index; 291 } else { 292 print OUT ($t, 293 "eval(\"sub $enum_name () \{ $enum_val; \}\") ", 294 "unless defined(\&$enum_name);\n"); 295 } 296 } 297 } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/ 298 and !/;\s*$/ and !/{\s*}\s*$/) 299 { # { for vi 300 # This is a hack to parse the inline functions in the glibc headers. 301 # Warning: massive kludge ahead. We suppose inline functions 302 # are mainly constructed like macros. 303 while (1) { 304 last unless defined ($next = next_line($file)); 305 chomp $next; 306 undef $_, last if $next =~ /__THROW\s*;/ 307 or $next =~ /^(__extension__|extern|static)\b/; 308 $_ .= " $next"; 309 print OUT "# $next\n" if $opt_D; 310 last if $next =~ /^}|^{.*}\s*$/; 311 } 312 next if not defined; # because it's only a prototype 313 s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g; 314 # violently drop #ifdefs 315 s/#\s*if.*?#\s*endif//g 316 and print OUT "# some #ifdef were dropped here -- fill in the blanks\n"; 317 if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) { 318 $name = $1; 319 } else { 320 warn "name not found"; next; # shouldn't occur... 321 } 322 my @args; 323 if (s/^\(([^()]*)\)\s*(\w+\s*)*//) { 324 for my $arg (split /,/, $1) { 325 if ($arg =~ /(\w+)\s*$/) { 326 $curargs{$1} = 1; 327 push @args, $1; 328 } 329 } 330 } 331 $args = ( 332 @args 333 ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t " 334 : "" 335 ); 336 my $proto = @args ? '' : '() '; 337 $new = ''; 338 s/\breturn\b//g; # "return" doesn't occur in macros usually... 339 expr(); 340 # try to find and perlify local C variables 341 our @local_variables = (); # needs to be a our(): (?{...}) bug workaround 342 { 343 use re "eval"; 344 my $typelist = join '|', keys %isatype; 345 $new =~ s[' 346 (?:(?:__)?const(?:__)?\s+)? 347 (?:(?:un)?signed\s+)? 348 (?:long\s+)? 349 (?:$typelist)\s+ 350 (\w+) 351 (?{ push @local_variables, $1 }) 352 '] 353 [my \$$1]gx; 354 $new =~ s[' 355 (?:(?:__)?const(?:__)?\s+)? 356 (?:(?:un)?signed\s+)? 357 (?:long\s+)? 358 (?:$typelist)\s+ 359 ' \s+ &(\w+) \s* ; 360 (?{ push @local_variables, $1 }) 361 ] 362 [my \$$1;]gx; 363 } 364 $new =~ s/&$_\b/\$$_/g for @local_variables; 365 $new =~ s/(["\\])/\\$1/g; #"]); 366 # now that's almost like a macro (we hope) 367 EMIT($proto); 368 } 369 } 370 $Is_converted{$file} = 1; 371 if ($opt_e && exists($bad_file{$file})) { 372 unlink($Dest_dir . '/' . $outfile); 373 $next = ''; 374 } else { 375 print OUT "1;\n"; 376 queue_includes_from($file) if $opt_a; 377 } 378} 379 380if ($opt_e && (scalar(keys %bad_file) > 0)) { 381 warn "Was unable to convert the following files:\n"; 382 warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n"; 383} 384 385exit $Exit; 386 387sub EMIT { 388 my $proto = shift; 389 390 $new = reindent($new); 391 $args = reindent($args); 392 if ($t ne '') { 393 $new =~ s/(['\\])/\\$1/g; #']); 394 if ($opt_h) { 395 print OUT $t, 396 "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; 397 $eval_index++; 398 } else { 399 print OUT $t, 400 "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; 401 } 402 } else { 403 print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; 404 } 405 %curargs = (); 406 return; 407} 408 409sub expr { 410 if (/\b__asm__\b/) { # freak out 411 $new = '"(assembly code)"'; 412 return 413 } 414 my $joined_args; 415 if(keys(%curargs)) { 416 $joined_args = join('|', keys(%curargs)); 417 } 418 while ($_ ne '') { 419 s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator 420 s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of 421 s/^(\s+)// && do {$new .= ' '; next;}; 422 s/^0X([0-9A-F]+)[UL]*//i 423 && do {my $hex = $1; 424 $hex =~ s/^0+//; 425 if (length $hex > 8 && !$Config{use64bitint}) { 426 # Croak if nv_preserves_uv_bits < 64 ? 427 $new .= hex(substr($hex, -8)) + 428 2**32 * hex(substr($hex, 0, -8)); 429 # The above will produce "erroneous" code 430 # if the hex constant was e.g. inside UINT64_C 431 # macro, but then again, h2ph is an approximation. 432 } else { 433 $new .= lc("0x$hex"); 434 } 435 next;}; 436 s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;}; 437 s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; 438 s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; 439 s/^'((\\"|[^"])*)'// && do { 440 if ($curargs{$1}) { 441 $new .= "ord('\$$1')"; 442 } else { 443 $new .= "ord('$1')"; 444 } 445 next; 446 }; 447 # replace "sizeof(foo)" with "{foo}" 448 # also, remove * (C dereference operator) to avoid perl syntax 449 # problems. Where the %sizeof array comes from is anyone's 450 # guess (c2ph?), but this at least avoids fatal syntax errors. 451 # Behavior is undefined if sizeof() delimiters are unbalanced. 452 # This code was modified to able to handle constructs like this: 453 # sizeof(*(p)), which appear in the HP-UX 10.01 header files. 454 s/^sizeof\s*\(// && do { 455 $new .= '$sizeof'; 456 my $lvl = 1; # already saw one open paren 457 # tack { on the front, and skip it in the loop 458 $_ = "{" . "$_"; 459 my $index = 1; 460 # find balanced closing paren 461 while ($index <= length($_) && $lvl > 0) { 462 $lvl++ if substr($_, $index, 1) eq "("; 463 $lvl-- if substr($_, $index, 1) eq ")"; 464 $index++; 465 } 466 # tack } on the end, replacing ) 467 substr($_, $index - 1, 1) = "}"; 468 # remove pesky * operators within the sizeof argument 469 substr($_, 0, $index - 1) =~ s/\*//g; 470 next; 471 }; 472 # Eliminate typedefs 473 /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { 474 my $doit = 1; 475 foreach (split /\s+/, $1) { # Make sure all the words are types, 476 unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){ 477 $doit = 0; 478 last; 479 } 480 } 481 if( $doit ){ 482 s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. 483 } 484 }; 485 # struct/union member, including arrays: 486 s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { 487 my $id = $1; 488 $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; 489 $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); 490 while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { 491 my($index) = $1; 492 $index =~ s/\s//g; 493 if(exists($curargs{$index})) { 494 $index = "\$$index"; 495 } else { 496 $index = "&$index"; 497 } 498 $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; 499 } 500 $new .= " (\$$id)"; 501 }; 502 s/^([_a-zA-Z]\w*)// && do { 503 my $id = $1; 504 if ($id eq 'struct' || $id eq 'union') { 505 s/^\s+(\w+)//; 506 $id .= ' ' . $1; 507 $isatype{$id} = 1; 508 } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { 509 while (s/^\s+(\w+)//) { $id .= ' ' . $1; } 510 $isatype{$id} = 1; 511 } 512 if ($curargs{$id}) { 513 $new .= "\$$id"; 514 $new .= '->' if /^[\[\{]/; 515 } elsif ($id eq 'defined') { 516 $new .= 'defined'; 517 } elsif (/^\s*\(/) { 518 s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat 519 $new .= " &$id"; 520 } elsif ($isatype{$id}) { 521 if ($new =~ /\{\s*$/) { 522 $new .= "'$id'"; 523 } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { 524 $new =~ s/\(\s*$//; 525 s/^[\s*]*\)//; 526 } else { 527 $new .= q(').$id.q('); 528 } 529 } else { 530 if ($inif) { 531 if ($new =~ /defined\s*$/) { 532 $new .= '(&' . $id . ')'; 533 } elsif ($new =~ /defined\s*\($/) { 534 $new .= '&' . $id; 535 } else { 536 $new .= '(defined(&' . $id . ') ? &' . $id . ' : undef)'; 537 } 538 } elsif (/^\[/) { 539 $new .= " \$$id"; 540 } else { 541 $new .= ' &' . $id; 542 } 543 } 544 next; 545 }; 546 s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; 547 } 548} 549 550 551sub next_line 552{ 553 my $file = shift; 554 my ($in, $out); 555 my $pre_sub_tri_graphs = 1; 556 557 READ: while (not eof IN) { 558 $in .= <IN>; 559 chomp $in; 560 next unless length $in; 561 562 while (length $in) { 563 if ($pre_sub_tri_graphs) { 564 # Preprocess all tri-graphs 565 # including things stuck in quoted string constants. 566 $in =~ s/\?\?=/#/g; # | ??=| #| 567 $in =~ s/\?\?\!/|/g; # | ??!| || 568 $in =~ s/\?\?'/^/g; # | ??'| ^| 569 $in =~ s/\?\?\(/[/g; # | ??(| [| 570 $in =~ s/\?\?\)/]/g; # | ??)| ]| 571 $in =~ s/\?\?\-/~/g; # | ??-| ~| 572 $in =~ s/\?\?\//\\/g; # | ??/| \| 573 $in =~ s/\?\?</{/g; # | ??<| {| 574 $in =~ s/\?\?>/}/g; # | ??>| }| 575 } 576 if ($in =~ s/^\#ifdef __LANGUAGE_PASCAL__//) { 577 # Tru64 disassembler.h evilness: mixed C and Pascal. 578 while (<IN>) { 579 last if /^\#endif/; 580 } 581 $in = ""; 582 next READ; 583 } 584 # Skip inlined functions in headers 585 if ($in =~ s/^(extern|static) (__inline__|inline) .*[^;]\s*$//) { 586 while (<IN>) { 587 last if /^}/; 588 } 589 $in = ""; 590 next READ; 591 } 592 if ($in =~ s/\\$//) { # \-newline 593 $out .= ' '; 594 next READ; 595 } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough 596 $out .= $1; 597 } elsif ($in =~ s/^(\\.)//) { # \... 598 $out .= $1; 599 } elsif ($in =~ /^'/) { # '... 600 if ($in =~ s/^('(\\.|[^'\\])*')//) { 601 $out .= $1; 602 } else { 603 next READ; 604 } 605 } elsif ($in =~ /^"/) { # "... 606 if ($in =~ s/^("(\\.|[^"\\])*")//) { 607 $out .= $1; 608 } else { 609 next READ; 610 } 611 } elsif ($in =~ s/^\/\/.*//) { # //... 612 # fall through 613 } elsif ($in =~ m/^\/\*/) { # /*... 614 # C comment removal adapted from perlfaq6: 615 if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { 616 $out .= ' '; 617 } else { # Incomplete /* */ 618 next READ; 619 } 620 } elsif ($in =~ s/^(\/)//) { # /... 621 $out .= $1; 622 } elsif ($in =~ s/^([^\'\"\\\/]+)//) { 623 $out .= $1; 624 } elsif ($^O eq 'linux' && 625 $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! && 626 $in =~ s!\'T KNOW!!) { 627 $out =~ s!I DON$!I_DO_NOT_KNOW!; 628 } else { 629 if ($opt_e) { 630 warn "Cannot parse $file:\n$in\n"; 631 $bad_file{$file} = 1; 632 $in = ''; 633 $out = undef; 634 last READ; 635 } else { 636 die "Cannot parse:\n$in\n"; 637 } 638 } 639 } 640 641 last READ if $out =~ /\S/; 642 } 643 644 return $out; 645} 646 647 648# Handle recursive subdirectories without getting a grotesquely big stack. 649# Could this be implemented using File::Find? 650sub next_file 651{ 652 my $file; 653 654 while (@ARGV) { 655 $file = shift @ARGV; 656 657 if ($file eq '-' or -f $file or -l $file) { 658 return $file; 659 } elsif (-d $file) { 660 if ($opt_r) { 661 expand_glob($file); 662 } else { 663 print STDERR "Skipping directory '$file'\n"; 664 } 665 } elsif ($opt_a) { 666 return $file; 667 } else { 668 print STDERR "Skipping '$file': not a file or directory\n"; 669 } 670 } 671 672 return undef; 673} 674 675 676# Put all the files in $directory into @ARGV for processing. 677sub expand_glob 678{ 679 my ($directory) = @_; 680 681 $directory =~ s:/$::; 682 683 opendir DIR, $directory; 684 foreach (readdir DIR) { 685 next if ($_ eq '.' or $_ eq '..'); 686 687 # expand_glob() is going to be called until $ARGV[0] isn't a 688 # directory; so push directories, and unshift everything else. 689 if (-d "$directory/$_") { push @ARGV, "$directory/$_" } 690 else { unshift @ARGV, "$directory/$_" } 691 } 692 closedir DIR; 693} 694 695 696# Given $file, a symbolic link to a directory in the C include directory, 697# make an equivalent symbolic link in $Dest_dir, if we can figure out how. 698# Otherwise, just duplicate the file or directory. 699sub link_if_possible 700{ 701 my ($dirlink) = @_; 702 my $target = eval 'readlink($dirlink)'; 703 704 if ($target =~ m:^\.\./: or $target =~ m:^/:) { 705 # The target of a parent or absolute link could leave the $Dest_dir 706 # hierarchy, so let's put all of the contents of $dirlink (actually, 707 # the contents of $target) into @ARGV; as a side effect down the 708 # line, $dirlink will get created as an _actual_ directory. 709 expand_glob($dirlink); 710 } else { 711 if (-l "$Dest_dir/$dirlink") { 712 unlink "$Dest_dir/$dirlink" or 713 print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; 714 } 715 716 if (eval 'symlink($target, "$Dest_dir/$dirlink")') { 717 print "Linking $target -> $Dest_dir/$dirlink\n"; 718 719 # Make sure that the link _links_ to something: 720 if (! -e "$Dest_dir/$target") { 721 mkpath("$Dest_dir/$target", 0755) or 722 print STDERR "Could not create $Dest_dir/$target/\n"; 723 } 724 } else { 725 print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; 726 } 727 } 728} 729 730 731# Push all #included files in $file onto our stack, except for STDIN 732# and files we've already processed. 733sub queue_includes_from 734{ 735 my ($file) = @_; 736 my $line; 737 738 return if ($file eq "-"); 739 740 open HEADER, "<", $file or return; 741 while (defined($line = <HEADER>)) { 742 while (/\\$/) { # Handle continuation lines 743 chop $line; 744 $line .= <HEADER>; 745 } 746 747 if ($line =~ /^#\s*include\s+([<"])(.*?)[>"]/) { 748 my ($delimiter, $new_file) = ($1, $2); 749 # copy the prefix in the quote syntax (#include "x.h") case 750 if ($delimiter eq q{"} && $file =~ m|^(.*)/|) { 751 $new_file = "$1/$new_file"; 752 } 753 push(@ARGV, $new_file) unless $Is_converted{$new_file}; 754 } 755 } 756 close HEADER; 757} 758 759 760# Determine include directories; $Config{usrinc} should be enough for (all 761# non-GCC?) C compilers, but gcc uses additional include directories. 762sub inc_dirs 763{ 764 my $from_gcc = `LC_ALL=C $Config{cc} -v -E - < /dev/null 2>&1 | awk '/^#include/, /^End of search list/' | grep '^ '`; 765 length($from_gcc) ? (split(' ', $from_gcc), $Config{usrinc}) : ($Config{usrinc}); 766} 767 768 769# Create "_h2ph_pre.ph", if it doesn't exist or was built by a different 770# version of h2ph. 771sub build_preamble_if_necessary 772{ 773 # Increment $VERSION every time this function is modified: 774 my $VERSION = 4; 775 my $preamble = "$Dest_dir/_h2ph_pre.ph"; 776 777 # Can we skip building the preamble file? 778 if (-r $preamble) { 779 # Extract version number from first line of preamble: 780 open PREAMBLE, "<", $preamble or die "Cannot open $preamble: $!"; 781 my $line = <PREAMBLE>; 782 $line =~ /(\b\d+\b)/; 783 close PREAMBLE or die "Cannot close $preamble: $!"; 784 785 # Don't build preamble if a compatible preamble exists: 786 return if $1 == $VERSION; 787 } 788 789 my (%define) = _extract_cc_defines(); 790 791 open PREAMBLE, ">", $preamble or die "Cannot open $preamble: $!"; 792 print PREAMBLE "# This file was created by h2ph version $VERSION\n"; 793 # Prevent non-portable hex constants from warning. 794 # 795 # We still produce an overflow warning if we can't represent 796 # a hex constant as an integer. 797 print PREAMBLE "no warnings qw(portable);\n"; 798 799 foreach (sort keys %define) { 800 if ($opt_D) { 801 print PREAMBLE "# $_=$define{$_}\n"; 802 } 803 if ($define{$_} =~ /^\((.*)\)$/) { 804 # parenthesized value: d=(v) 805 $define{$_} = $1; 806 } 807 if (/^(\w+)\((\w)\)$/) { 808 my($macro, $arg) = ($1, $2); 809 my $def = $define{$_}; 810 $def =~ s/$arg/\$\{$arg\}/g; 811 print PREAMBLE <<DEFINE; 812unless (defined &$macro) { sub $macro(\$) { my (\$$arg) = \@_; \"$def\" } } 813 814DEFINE 815 } elsif 816 ($define{$_} =~ /^([+-]?(\d+)?\.\d+([eE][+-]?\d+)?)[FL]?$/) { 817 # float: 818 print PREAMBLE 819 "unless (defined &$_) { sub $_() { $1 } }\n\n"; 820 } elsif ($define{$_} =~ /^([+-]?\d+)U?L{0,2}$/i) { 821 # integer: 822 print PREAMBLE 823 "unless (defined &$_) { sub $_() { $1 } }\n\n"; 824 } elsif ($define{$_} =~ /^([+-]?0x[\da-f]+)U?L{0,2}$/i) { 825 # hex integer 826 # Special cased, since perl warns on hex integers 827 # that can't be represented in a UV. 828 # 829 # This way we get the warning at time of use, so the user 830 # only gets the warning if they happen to use this 831 # platform-specific definition. 832 my $code = $1; 833 $code = "hex('$code')" if length $code > 10; 834 print PREAMBLE 835 "unless (defined &$_) { sub $_() { $code } }\n\n"; 836 } elsif ($define{$_} =~ /^\w+$/) { 837 my $def = $define{$_}; 838 if ($isatype{$def}) { 839 print PREAMBLE 840 "unless (defined &$_) { sub $_() { \"$def\" } }\n\n"; 841 } else { 842 print PREAMBLE 843 "unless (defined &$_) { sub $_() { &$def } }\n\n"; 844 } 845 } else { 846 print PREAMBLE 847 "unless (defined &$_) { sub $_() { \"", 848 quotemeta($define{$_}), "\" } }\n\n"; 849 } 850 } 851 print PREAMBLE "\n1;\n"; # avoid 'did not return a true value' when empty 852 close PREAMBLE or die "Cannot close $preamble: $!"; 853} 854 855 856# %Config contains information on macros that are pre-defined by the 857# system's compiler. We need this information to make the .ph files 858# function with perl as the .h files do with cc. 859sub _extract_cc_defines 860{ 861 my %define; 862 my $allsymbols = join " ", 863 @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; 864 865 # Split compiler pre-definitions into 'key=value' pairs: 866 while ($allsymbols =~ /([^\s]+)=((\\\s|[^\s])+)/g) { 867 $define{$1} = $2; 868 if ($opt_D) { 869 print STDERR "$_: $1 -> $2\n"; 870 } 871 } 872 873 return %define; 874} 875 876 8771; 878 879############################################################################## 880__END__ 881 882=head1 NAME 883 884h2ph - convert .h C header files to .ph Perl header files 885 886=head1 SYNOPSIS 887 888B<h2ph [-d destination directory] [-r | -a] [-l] [-h] [-e] [-D] [-Q] 889[headerfiles]> 890 891=head1 DESCRIPTION 892 893I<h2ph> 894converts any C header files specified to the corresponding Perl header file 895format. 896It is most easily run while in /usr/include: 897 898 cd /usr/include; h2ph * sys/* 899 900or 901 902 cd /usr/include; h2ph * sys/* arpa/* netinet/* 903 904or 905 906 cd /usr/include; h2ph -r -l . 907 908The output files are placed in the hierarchy rooted at Perl's 909architecture dependent library directory. You can specify a different 910hierarchy with a B<-d> switch. 911 912If run with no arguments, filters standard input to standard output. 913 914=head1 OPTIONS 915 916=over 4 917 918=item -d destination_dir 919 920Put the resulting B<.ph> files beneath B<destination_dir>, instead of 921beneath the default Perl library location (C<$Config{'installsitearch'}>). 922 923=item -r 924 925Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> 926on all files in those directories (and their subdirectories, etc.). B<-r> 927and B<-a> are mutually exclusive. 928 929=item -a 930 931Run automagically; convert B<headerfiles>, as well as any B<.h> files 932which they include. This option will search for B<.h> files in all 933directories which your C compiler ordinarily uses. B<-a> and B<-r> are 934mutually exclusive. 935 936=item -l 937 938Symbolic links will be replicated in the destination directory. If B<-l> 939is not specified, then links are skipped over. 940 941=item -h 942 943Put 'hints' in the .ph files which will help in locating problems with 944I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax 945errors, instead of the cryptic 946 947 [ some error condition ] at (eval mmm) line nnn 948 949you will see the slightly more helpful 950 951 [ some error condition ] at filename.ph line nnn 952 953However, the B<.ph> files almost double in size when built using B<-h>. 954 955=item -e 956 957If an error is encountered during conversion, output file will be removed and 958a warning emitted instead of terminating the conversion immediately. 959 960=item -D 961 962Include the code from the B<.h> file as a comment in the B<.ph> file. 963This is primarily used for debugging I<h2ph>. 964 965=item -Q 966 967'Quiet' mode; don't print out the names of the files being converted. 968 969=back 970 971=head1 ENVIRONMENT 972 973No environment variables are used. 974 975=head1 FILES 976 977 /usr/include/*.h 978 /usr/include/sys/*.h 979 980etc. 981 982=head1 AUTHOR 983 984Larry Wall 985 986=head1 SEE ALSO 987 988perl(1) 989 990=head1 DIAGNOSTICS 991 992The usual warnings if it can't read or write the files involved. 993 994=head1 BUGS 995 996Doesn't construct the %sizeof array for you. 997 998It doesn't handle all C constructs, but it does attempt to isolate 999definitions inside evals so that you can get at the definitions 1000that it can translate. 1001 1002It's only intended as a rough tool. 1003You may need to dicker with the files produced. 1004 1005You have to run this program by hand; it's not run as part of the Perl 1006installation. 1007 1008Doesn't handle complicated expressions built piecemeal, a la: 1009 1010 enum { 1011 FIRST_VALUE, 1012 SECOND_VALUE, 1013 #ifdef ABC 1014 THIRD_VALUE 1015 #endif 1016 }; 1017 1018Doesn't necessarily locate all of your C compiler's internally-defined 1019symbols. 1020 1021=cut 1022 1023!NO!SUBS! 1024 1025close OUT or die "Can't close $file: $!"; 1026chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; 1027exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; 1028chdir $origdir; 1029