Commit | Line | Data |
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920dae64 AT |
1 | #!/import/archperf/ws/devtools/4/amd64/bin/perl |
2 | eval 'exec /import/archperf/ws/devtools/4/amd64/bin/perl -S $0 ${1+"$@"}' | |
3 | if $running_under_some_shell; | |
4 | ||
5 | use strict; | |
6 | ||
7 | use Config; | |
8 | use File::Path qw(mkpath); | |
9 | use Getopt::Std; | |
10 | ||
11 | # Make sure read permissions for all are set: | |
12 | if (defined umask && (umask() & 0444)) { | |
13 | umask (umask() & ~0444); | |
14 | } | |
15 | ||
16 | getopts('Dd:rlhaQe'); | |
17 | use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e); | |
18 | die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); | |
19 | my @inc_dirs = inc_dirs() if $opt_a; | |
20 | ||
21 | my $Exit = 0; | |
22 | ||
23 | my $Dest_dir = $opt_d || $Config{installsitearch}; | |
24 | die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" | |
25 | unless -d $Dest_dir; | |
26 | ||
27 | my @isatype = qw( | |
28 | char uchar u_char | |
29 | short ushort u_short | |
30 | int uint u_int | |
31 | long ulong u_long | |
32 | FILE key_t caddr_t | |
33 | float double size_t | |
34 | ); | |
35 | ||
36 | my %isatype; | |
37 | @isatype{@isatype} = (1) x @isatype; | |
38 | my $inif = 0; | |
39 | my %Is_converted; | |
40 | my %bad_file = (); | |
41 | ||
42 | @ARGV = ('-') unless @ARGV; | |
43 | ||
44 | build_preamble_if_necessary(); | |
45 | ||
46 | sub reindent($) { | |
47 | my($text) = shift; | |
48 | $text =~ s/\n/\n /g; | |
49 | $text =~ s/ /\t/g; | |
50 | $text; | |
51 | } | |
52 | ||
53 | my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); | |
54 | my ($incl, $incl_type, $next); | |
55 | while (defined (my $file = next_file())) { | |
56 | if (-l $file and -d $file) { | |
57 | link_if_possible($file) if ($opt_l); | |
58 | next; | |
59 | } | |
60 | ||
61 | # Recover from header files with unbalanced cpp directives | |
62 | $t = ''; | |
63 | $tab = 0; | |
64 | ||
65 | # $eval_index goes into ``#line'' directives, to help locate syntax errors: | |
66 | $eval_index = 1; | |
67 | ||
68 | if ($file eq '-') { | |
69 | open(IN, "-"); | |
70 | open(OUT, ">-"); | |
71 | } else { | |
72 | ($outfile = $file) =~ s/\.h$/.ph/ || next; | |
73 | print "$file -> $outfile\n" unless $opt_Q; | |
74 | if ($file =~ m|^(.*)/|) { | |
75 | $dir = $1; | |
76 | mkpath "$Dest_dir/$dir"; | |
77 | } | |
78 | ||
79 | if ($opt_a) { # automagic mode: locate header file in @inc_dirs | |
80 | foreach (@inc_dirs) { | |
81 | chdir $_; | |
82 | last if -f $file; | |
83 | } | |
84 | } | |
85 | ||
86 | open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); | |
87 | open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; | |
88 | } | |
89 | ||
90 | print OUT | |
91 | "require '_h2ph_pre.ph';\n\n", | |
92 | "no warnings 'redefine';\n\n"; | |
93 | ||
94 | while (defined (local $_ = next_line($file))) { | |
95 | if (s/^\s*\#\s*//) { | |
96 | if (s/^define\s+(\w+)//) { | |
97 | $name = $1; | |
98 | $new = ''; | |
99 | s/\s+$//; | |
100 | s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 | |
101 | if (s/^\(([\w,\s]*)\)//) { | |
102 | $args = $1; | |
103 | my $proto = '() '; | |
104 | if ($args ne '') { | |
105 | $proto = ''; | |
106 | foreach my $arg (split(/,\s*/,$args)) { | |
107 | $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; | |
108 | $curargs{$arg} = 1; | |
109 | } | |
110 | $args =~ s/\b(\w)/\$$1/g; | |
111 | $args = "my($args) = \@_;\n$t "; | |
112 | } | |
113 | s/^\s+//; | |
114 | expr(); | |
115 | $new =~ s/(["\\])/\\$1/g; #"]); | |
116 | EMIT: | |
117 | $new = reindent($new); | |
118 | $args = reindent($args); | |
119 | if ($t ne '') { | |
120 | $new =~ s/(['\\])/\\$1/g; #']); | |
121 | if ($opt_h) { | |
122 | print OUT $t, | |
123 | "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; | |
124 | $eval_index++; | |
125 | } else { | |
126 | print OUT $t, | |
127 | "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; | |
128 | } | |
129 | } else { | |
130 | print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; | |
131 | } | |
132 | %curargs = (); | |
133 | } else { | |
134 | s/^\s+//; | |
135 | expr(); | |
136 | $new = 1 if $new eq ''; | |
137 | $new = reindent($new); | |
138 | $args = reindent($args); | |
139 | if ($t ne '') { | |
140 | $new =~ s/(['\\])/\\$1/g; #']); | |
141 | ||
142 | if ($opt_h) { | |
143 | print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; | |
144 | $eval_index++; | |
145 | } else { | |
146 | print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; | |
147 | } | |
148 | } else { | |
149 | # Shunt around such directives as `#define FOO FOO': | |
150 | next if " \&$name" eq $new; | |
151 | ||
152 | print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; | |
153 | } | |
154 | } | |
155 | } elsif (/^(include|import|include_next)\s*[<\"](.*)[>\"]/) { | |
156 | $incl_type = $1; | |
157 | $incl = $2; | |
158 | if (($incl_type eq 'include_next') || | |
159 | ($opt_e && exists($bad_file{$incl}))) { | |
160 | $incl =~ s/\.h$/.ph/; | |
161 | print OUT ($t, | |
162 | "eval {\n"); | |
163 | $tab += 4; | |
164 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
165 | print OUT ($t, "my(\@REM);\n"); | |
166 | if ($incl_type eq 'include_next') { | |
167 | print OUT ($t, | |
168 | "my(\%INCD) = map { \$INC{\$_} => 1 } ", | |
169 | "(grep { \$_ eq \"$incl\" } ", | |
170 | "keys(\%INC));\n"); | |
171 | print OUT ($t, | |
172 | "\@REM = map { \"\$_/$incl\" } ", | |
173 | "(grep { not exists(\$INCD{\"\$_/$incl\"})", | |
174 | " and -f \"\$_/$incl\" } \@INC);\n"); | |
175 | } else { | |
176 | print OUT ($t, | |
177 | "\@REM = map { \"\$_/$incl\" } ", | |
178 | "(grep {-r \"\$_/$incl\" } \@INC);\n"); | |
179 | } | |
180 | print OUT ($t, | |
181 | "require \"\$REM[0]\" if \@REM;\n"); | |
182 | $tab -= 4; | |
183 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
184 | print OUT ($t, | |
185 | "};\n"); | |
186 | print OUT ($t, | |
187 | "warn(\$\@) if \$\@;\n"); | |
188 | } else { | |
189 | $incl =~ s/\.h$/.ph/; | |
190 | print OUT $t,"require '$incl';\n"; | |
191 | } | |
192 | } elsif (/^ifdef\s+(\w+)/) { | |
193 | print OUT $t,"if(defined(&$1)) {\n"; | |
194 | $tab += 4; | |
195 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
196 | } elsif (/^ifndef\s+(\w+)/) { | |
197 | print OUT $t,"unless(defined(&$1)) {\n"; | |
198 | $tab += 4; | |
199 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
200 | } elsif (s/^if\s+//) { | |
201 | $new = ''; | |
202 | $inif = 1; | |
203 | expr(); | |
204 | $inif = 0; | |
205 | print OUT $t,"if($new) {\n"; | |
206 | $tab += 4; | |
207 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
208 | } elsif (s/^elif\s+//) { | |
209 | $new = ''; | |
210 | $inif = 1; | |
211 | expr(); | |
212 | $inif = 0; | |
213 | $tab -= 4; | |
214 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
215 | print OUT $t,"}\n elsif($new) {\n"; | |
216 | $tab += 4; | |
217 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
218 | } elsif (/^else/) { | |
219 | $tab -= 4; | |
220 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
221 | print OUT $t,"} else {\n"; | |
222 | $tab += 4; | |
223 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
224 | } elsif (/^endif/) { | |
225 | $tab -= 4; | |
226 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
227 | print OUT $t,"}\n"; | |
228 | } elsif(/^undef\s+(\w+)/) { | |
229 | print OUT $t, "undef(&$1) if defined(&$1);\n"; | |
230 | } elsif(/^error\s+(".*")/) { | |
231 | print OUT $t, "die($1);\n"; | |
232 | } elsif(/^error\s+(.*)/) { | |
233 | print OUT $t, "die(\"", quotemeta($1), "\");\n"; | |
234 | } elsif(/^warning\s+(.*)/) { | |
235 | print OUT $t, "warn(\"", quotemeta($1), "\");\n"; | |
236 | } elsif(/^ident\s+(.*)/) { | |
237 | print OUT $t, "# $1\n"; | |
238 | } | |
239 | } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi | |
240 | until(/\{[^}]*\}.*;/ || /;/) { | |
241 | last unless defined ($next = next_line($file)); | |
242 | chomp $next; | |
243 | # drop "#define FOO FOO" in enums | |
244 | $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; | |
245 | # #defines in enums (aliases) | |
246 | $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/; | |
247 | $_ .= $next; | |
248 | print OUT "# $next\n" if $opt_D; | |
249 | } | |
250 | s/#\s*if.*?#\s*endif//g; # drop #ifdefs | |
251 | s@/\*.*?\*/@@g; | |
252 | s/\s+/ /g; | |
253 | next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; | |
254 | (my $enum_subs = $3) =~ s/\s//g; | |
255 | my @enum_subs = split(/,/, $enum_subs); | |
256 | my $enum_val = -1; | |
257 | foreach my $enum (@enum_subs) { | |
258 | my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; | |
259 | $enum_name or next; | |
260 | $enum_value =~ s/^=//; | |
261 | $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); | |
262 | if ($opt_h) { | |
263 | print OUT ($t, | |
264 | "eval(\"\\n#line $eval_index $outfile\\n", | |
265 | "sub $enum_name () \{ $enum_val; \}\") ", | |
266 | "unless defined(\&$enum_name);\n"); | |
267 | ++ $eval_index; | |
268 | } else { | |
269 | print OUT ($t, | |
270 | "eval(\"sub $enum_name () \{ $enum_val; \}\") ", | |
271 | "unless defined(\&$enum_name);\n"); | |
272 | } | |
273 | } | |
274 | } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/ | |
275 | and !/;\s*$/ and !/{\s*}\s*$/) | |
276 | { # { for vi | |
277 | # This is a hack to parse the inline functions in the glibc headers. | |
278 | # Warning: massive kludge ahead. We suppose inline functions | |
279 | # are mainly constructed like macros. | |
280 | while (1) { | |
281 | last unless defined ($next = next_line($file)); | |
282 | chomp $next; | |
283 | undef $_, last if $next =~ /__THROW\s*;/ | |
284 | or $next =~ /^(__extension__|extern|static)\b/; | |
285 | $_ .= " $next"; | |
286 | print OUT "# $next\n" if $opt_D; | |
287 | last if $next =~ /^}|^{.*}\s*$/; | |
288 | } | |
289 | next if not defined; # because it's only a prototype | |
290 | s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g; | |
291 | # violently drop #ifdefs | |
292 | s/#\s*if.*?#\s*endif//g | |
293 | and print OUT "# some #ifdef were dropped here -- fill in the blanks\n"; | |
294 | if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) { | |
295 | $name = $1; | |
296 | } else { | |
297 | warn "name not found"; next; # shouldn't occur... | |
298 | } | |
299 | my @args; | |
300 | if (s/^\(([^()]*)\)\s*(\w+\s*)*//) { | |
301 | for my $arg (split /,/, $1) { | |
302 | if ($arg =~ /(\w+)\s*$/) { | |
303 | $curargs{$1} = 1; | |
304 | push @args, $1; | |
305 | } | |
306 | } | |
307 | } | |
308 | $args = ( | |
309 | @args | |
310 | ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t " | |
311 | : "" | |
312 | ); | |
313 | my $proto = @args ? '' : '() '; | |
314 | $new = ''; | |
315 | s/\breturn\b//g; # "return" doesn't occur in macros usually... | |
316 | expr(); | |
317 | # try to find and perlify local C variables | |
318 | our @local_variables = (); # needs to be a our(): (?{...}) bug workaround | |
319 | { | |
320 | use re "eval"; | |
321 | my $typelist = join '|', keys %isatype; | |
322 | $new =~ s[' | |
323 | (?:(?:__)?const(?:__)?\s+)? | |
324 | (?:(?:un)?signed\s+)? | |
325 | (?:long\s+)? | |
326 | (?:$typelist)\s+ | |
327 | (\w+) | |
328 | (?{ push @local_variables, $1 }) | |
329 | '] | |
330 | [my \$$1]gx; | |
331 | $new =~ s[' | |
332 | (?:(?:__)?const(?:__)?\s+)? | |
333 | (?:(?:un)?signed\s+)? | |
334 | (?:long\s+)? | |
335 | (?:$typelist)\s+ | |
336 | ' \s+ &(\w+) \s* ; | |
337 | (?{ push @local_variables, $1 }) | |
338 | ] | |
339 | [my \$$1;]gx; | |
340 | } | |
341 | $new =~ s/&$_\b/\$$_/g for @local_variables; | |
342 | $new =~ s/(["\\])/\\$1/g; #"]); | |
343 | # now that's almost like a macro (we hope) | |
344 | goto EMIT; | |
345 | } | |
346 | } | |
347 | $Is_converted{$file} = 1; | |
348 | if ($opt_e && exists($bad_file{$file})) { | |
349 | unlink($Dest_dir . '/' . $outfile); | |
350 | $next = ''; | |
351 | } else { | |
352 | print OUT "1;\n"; | |
353 | queue_includes_from($file) if $opt_a; | |
354 | } | |
355 | } | |
356 | ||
357 | if ($opt_e && (scalar(keys %bad_file) > 0)) { | |
358 | warn "Was unable to convert the following files:\n"; | |
359 | warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n"; | |
360 | } | |
361 | ||
362 | exit $Exit; | |
363 | ||
364 | sub expr { | |
365 | $new = '"(assembly code)"' and return if /\b__asm__\b/; # freak out. | |
366 | my $joined_args; | |
367 | if(keys(%curargs)) { | |
368 | $joined_args = join('|', keys(%curargs)); | |
369 | } | |
370 | while ($_ ne '') { | |
371 | s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator | |
372 | s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of | |
373 | s/^(\s+)// && do {$new .= ' '; next;}; | |
374 | s/^0X([0-9A-F]+)[UL]*//i | |
375 | && do {my $hex = $1; | |
376 | $hex =~ s/^0+//; | |
377 | if (length $hex > 8 && !$Config{use64bitint}) { | |
378 | # Croak if nv_preserves_uv_bits < 64 ? | |
379 | $new .= hex(substr($hex, -8)) + | |
380 | 2**32 * hex(substr($hex, 0, -8)); | |
381 | # The above will produce "errorneus" code | |
382 | # if the hex constant was e.g. inside UINT64_C | |
383 | # macro, but then again, h2ph is an approximation. | |
384 | } else { | |
385 | $new .= lc("0x$hex"); | |
386 | } | |
387 | next;}; | |
388 | s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;}; | |
389 | s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; | |
390 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; | |
391 | s/^'((\\"|[^"])*)'// && do { | |
392 | if ($curargs{$1}) { | |
393 | $new .= "ord('\$$1')"; | |
394 | } else { | |
395 | $new .= "ord('$1')"; | |
396 | } | |
397 | next; | |
398 | }; | |
399 | # replace "sizeof(foo)" with "{foo}" | |
400 | # also, remove * (C dereference operator) to avoid perl syntax | |
401 | # problems. Where the %sizeof array comes from is anyone's | |
402 | # guess (c2ph?), but this at least avoids fatal syntax errors. | |
403 | # Behavior is undefined if sizeof() delimiters are unbalanced. | |
404 | # This code was modified to able to handle constructs like this: | |
405 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. | |
406 | s/^sizeof\s*\(// && do { | |
407 | $new .= '$sizeof'; | |
408 | my $lvl = 1; # already saw one open paren | |
409 | # tack { on the front, and skip it in the loop | |
410 | $_ = "{" . "$_"; | |
411 | my $index = 1; | |
412 | # find balanced closing paren | |
413 | while ($index <= length($_) && $lvl > 0) { | |
414 | $lvl++ if substr($_, $index, 1) eq "("; | |
415 | $lvl-- if substr($_, $index, 1) eq ")"; | |
416 | $index++; | |
417 | } | |
418 | # tack } on the end, replacing ) | |
419 | substr($_, $index - 1, 1) = "}"; | |
420 | # remove pesky * operators within the sizeof argument | |
421 | substr($_, 0, $index - 1) =~ s/\*//g; | |
422 | next; | |
423 | }; | |
424 | # Eliminate typedefs | |
425 | /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { | |
426 | my $doit = 1; | |
427 | foreach (split /\s+/, $1) { # Make sure all the words are types, | |
428 | unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){ | |
429 | $doit = 0; | |
430 | last; | |
431 | } | |
432 | } | |
433 | if( $doit ){ | |
434 | s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. | |
435 | } | |
436 | }; | |
437 | # struct/union member, including arrays: | |
438 | s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { | |
439 | my $id = $1; | |
440 | $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; | |
441 | $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); | |
442 | while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { | |
443 | my($index) = $1; | |
444 | $index =~ s/\s//g; | |
445 | if(exists($curargs{$index})) { | |
446 | $index = "\$$index"; | |
447 | } else { | |
448 | $index = "&$index"; | |
449 | } | |
450 | $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; | |
451 | } | |
452 | $new .= " (\$$id)"; | |
453 | }; | |
454 | s/^([_a-zA-Z]\w*)// && do { | |
455 | my $id = $1; | |
456 | if ($id eq 'struct' || $id eq 'union') { | |
457 | s/^\s+(\w+)//; | |
458 | $id .= ' ' . $1; | |
459 | $isatype{$id} = 1; | |
460 | } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { | |
461 | while (s/^\s+(\w+)//) { $id .= ' ' . $1; } | |
462 | $isatype{$id} = 1; | |
463 | } | |
464 | if ($curargs{$id}) { | |
465 | $new .= "\$$id"; | |
466 | $new .= '->' if /^[\[\{]/; | |
467 | } elsif ($id eq 'defined') { | |
468 | $new .= 'defined'; | |
469 | } elsif (/^\s*\(/) { | |
470 | s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat | |
471 | $new .= " &$id"; | |
472 | } elsif ($isatype{$id}) { | |
473 | if ($new =~ /{\s*$/) { | |
474 | $new .= "'$id'"; | |
475 | } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { | |
476 | $new =~ s/\(\s*$//; | |
477 | s/^[\s*]*\)//; | |
478 | } else { | |
479 | $new .= q(').$id.q('); | |
480 | } | |
481 | } else { | |
482 | if ($inif && $new !~ /defined\s*\($/) { | |
483 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; | |
484 | } elsif (/^\[/) { | |
485 | $new .= " \$$id"; | |
486 | } else { | |
487 | $new .= ' &' . $id; | |
488 | } | |
489 | } | |
490 | next; | |
491 | }; | |
492 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; | |
493 | } | |
494 | } | |
495 | ||
496 | ||
497 | sub next_line | |
498 | { | |
499 | my $file = shift; | |
500 | my ($in, $out); | |
501 | my $pre_sub_tri_graphs = 1; | |
502 | ||
503 | READ: while (not eof IN) { | |
504 | $in .= <IN>; | |
505 | chomp $in; | |
506 | next unless length $in; | |
507 | ||
508 | while (length $in) { | |
509 | if ($pre_sub_tri_graphs) { | |
510 | # Preprocess all tri-graphs | |
511 | # including things stuck in quoted string constants. | |
512 | $in =~ s/\?\?=/#/g; # | ??=| #| | |
513 | $in =~ s/\?\?\!/|/g; # | ??!| || | |
514 | $in =~ s/\?\?'/^/g; # | ??'| ^| | |
515 | $in =~ s/\?\?\(/[/g; # | ??(| [| | |
516 | $in =~ s/\?\?\)/]/g; # | ??)| ]| | |
517 | $in =~ s/\?\?\-/~/g; # | ??-| ~| | |
518 | $in =~ s/\?\?\//\\/g; # | ??/| \| | |
519 | $in =~ s/\?\?</{/g; # | ??<| {| | |
520 | $in =~ s/\?\?>/}/g; # | ??>| }| | |
521 | } | |
522 | if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) { | |
523 | # Tru64 disassembler.h evilness: mixed C and Pascal. | |
524 | while (<IN>) { | |
525 | last if /^\#endif/; | |
526 | } | |
527 | $in = ""; | |
528 | next READ; | |
529 | } | |
530 | if ($in =~ /^extern inline / && # Inlined assembler. | |
531 | $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) { | |
532 | while (<IN>) { | |
533 | last if /^}/; | |
534 | } | |
535 | $in = ""; | |
536 | next READ; | |
537 | } | |
538 | if ($in =~ s/\\$//) { # \-newline | |
539 | $out .= ' '; | |
540 | next READ; | |
541 | } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough | |
542 | $out .= $1; | |
543 | } elsif ($in =~ s/^(\\.)//) { # \... | |
544 | $out .= $1; | |
545 | } elsif ($in =~ /^'/) { # '... | |
546 | if ($in =~ s/^('(\\.|[^'\\])*')//) { | |
547 | $out .= $1; | |
548 | } else { | |
549 | next READ; | |
550 | } | |
551 | } elsif ($in =~ /^"/) { # "... | |
552 | if ($in =~ s/^("(\\.|[^"\\])*")//) { | |
553 | $out .= $1; | |
554 | } else { | |
555 | next READ; | |
556 | } | |
557 | } elsif ($in =~ s/^\/\/.*//) { # //... | |
558 | # fall through | |
559 | } elsif ($in =~ m/^\/\*/) { # /*... | |
560 | # C comment removal adapted from perlfaq6: | |
561 | if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { | |
562 | $out .= ' '; | |
563 | } else { # Incomplete /* */ | |
564 | next READ; | |
565 | } | |
566 | } elsif ($in =~ s/^(\/)//) { # /... | |
567 | $out .= $1; | |
568 | } elsif ($in =~ s/^([^\'\"\\\/]+)//) { | |
569 | $out .= $1; | |
570 | } elsif ($^O eq 'linux' && | |
571 | $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! && | |
572 | $in =~ s!\'T KNOW!!) { | |
573 | $out =~ s!I DON$!I_DO_NOT_KNOW!; | |
574 | } else { | |
575 | if ($opt_e) { | |
576 | warn "Cannot parse $file:\n$in\n"; | |
577 | $bad_file{$file} = 1; | |
578 | $in = ''; | |
579 | $out = undef; | |
580 | last READ; | |
581 | } else { | |
582 | die "Cannot parse:\n$in\n"; | |
583 | } | |
584 | } | |
585 | } | |
586 | ||
587 | last READ if $out =~ /\S/; | |
588 | } | |
589 | ||
590 | return $out; | |
591 | } | |
592 | ||
593 | ||
594 | # Handle recursive subdirectories without getting a grotesquely big stack. | |
595 | # Could this be implemented using File::Find? | |
596 | sub next_file | |
597 | { | |
598 | my $file; | |
599 | ||
600 | while (@ARGV) { | |
601 | $file = shift @ARGV; | |
602 | ||
603 | if ($file eq '-' or -f $file or -l $file) { | |
604 | return $file; | |
605 | } elsif (-d $file) { | |
606 | if ($opt_r) { | |
607 | expand_glob($file); | |
608 | } else { | |
609 | print STDERR "Skipping directory `$file'\n"; | |
610 | } | |
611 | } elsif ($opt_a) { | |
612 | return $file; | |
613 | } else { | |
614 | print STDERR "Skipping `$file': not a file or directory\n"; | |
615 | } | |
616 | } | |
617 | ||
618 | return undef; | |
619 | } | |
620 | ||
621 | ||
622 | # Put all the files in $directory into @ARGV for processing. | |
623 | sub expand_glob | |
624 | { | |
625 | my ($directory) = @_; | |
626 | ||
627 | $directory =~ s:/$::; | |
628 | ||
629 | opendir DIR, $directory; | |
630 | foreach (readdir DIR) { | |
631 | next if ($_ eq '.' or $_ eq '..'); | |
632 | ||
633 | # expand_glob() is going to be called until $ARGV[0] isn't a | |
634 | # directory; so push directories, and unshift everything else. | |
635 | if (-d "$directory/$_") { push @ARGV, "$directory/$_" } | |
636 | else { unshift @ARGV, "$directory/$_" } | |
637 | } | |
638 | closedir DIR; | |
639 | } | |
640 | ||
641 | ||
642 | # Given $file, a symbolic link to a directory in the C include directory, | |
643 | # make an equivalent symbolic link in $Dest_dir, if we can figure out how. | |
644 | # Otherwise, just duplicate the file or directory. | |
645 | sub link_if_possible | |
646 | { | |
647 | my ($dirlink) = @_; | |
648 | my $target = eval 'readlink($dirlink)'; | |
649 | ||
650 | if ($target =~ m:^\.\./: or $target =~ m:^/:) { | |
651 | # The target of a parent or absolute link could leave the $Dest_dir | |
652 | # hierarchy, so let's put all of the contents of $dirlink (actually, | |
653 | # the contents of $target) into @ARGV; as a side effect down the | |
654 | # line, $dirlink will get created as an _actual_ directory. | |
655 | expand_glob($dirlink); | |
656 | } else { | |
657 | if (-l "$Dest_dir/$dirlink") { | |
658 | unlink "$Dest_dir/$dirlink" or | |
659 | print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; | |
660 | } | |
661 | ||
662 | if (eval 'symlink($target, "$Dest_dir/$dirlink")') { | |
663 | print "Linking $target -> $Dest_dir/$dirlink\n"; | |
664 | ||
665 | # Make sure that the link _links_ to something: | |
666 | if (! -e "$Dest_dir/$target") { | |
667 | mkpath("$Dest_dir/$target", 0755) or | |
668 | print STDERR "Could not create $Dest_dir/$target/\n"; | |
669 | } | |
670 | } else { | |
671 | print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; | |
672 | } | |
673 | } | |
674 | } | |
675 | ||
676 | ||
677 | # Push all #included files in $file onto our stack, except for STDIN | |
678 | # and files we've already processed. | |
679 | sub queue_includes_from | |
680 | { | |
681 | my ($file) = @_; | |
682 | my $line; | |
683 | ||
684 | return if ($file eq "-"); | |
685 | ||
686 | open HEADER, $file or return; | |
687 | while (defined($line = <HEADER>)) { | |
688 | while (/\\$/) { # Handle continuation lines | |
689 | chop $line; | |
690 | $line .= <HEADER>; | |
691 | } | |
692 | ||
693 | if ($line =~ /^#\s*include\s+<(.*?)>/) { | |
694 | push(@ARGV, $1) unless $Is_converted{$1}; | |
695 | } | |
696 | } | |
697 | close HEADER; | |
698 | } | |
699 | ||
700 | ||
701 | # Determine include directories; $Config{usrinc} should be enough for (all | |
702 | # non-GCC?) C compilers, but gcc uses an additional include directory. | |
703 | sub inc_dirs | |
704 | { | |
705 | my $from_gcc = `LC_ALL=C $Config{cc} -v 2>&1`; | |
706 | if( !( $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s ) ) | |
707 | { # gcc-4+ : | |
708 | $from_gcc = `LC_ALL=C $Config{cc} -print-search-dirs 2>&1`; | |
709 | if ( !($from_gcc =~ s/^install:\s*([^\s]+[^\s\/])([\s\/]*).*$/$1\/include/s) ) | |
710 | { | |
711 | $from_gcc = ''; | |
712 | }; | |
713 | }; | |
714 | length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); | |
715 | } | |
716 | ||
717 | ||
718 | # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different | |
719 | # version of h2ph. | |
720 | sub build_preamble_if_necessary | |
721 | { | |
722 | # Increment $VERSION every time this function is modified: | |
723 | my $VERSION = 2; | |
724 | my $preamble = "$Dest_dir/_h2ph_pre.ph"; | |
725 | ||
726 | # Can we skip building the preamble file? | |
727 | if (-r $preamble) { | |
728 | # Extract version number from first line of preamble: | |
729 | open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; | |
730 | my $line = <PREAMBLE>; | |
731 | $line =~ /(\b\d+\b)/; | |
732 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
733 | ||
734 | # Don't build preamble if a compatible preamble exists: | |
735 | return if $1 == $VERSION; | |
736 | } | |
737 | ||
738 | my (%define) = _extract_cc_defines(); | |
739 | ||
740 | open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; | |
741 | print PREAMBLE "# This file was created by h2ph version $VERSION\n"; | |
742 | ||
743 | foreach (sort keys %define) { | |
744 | if ($opt_D) { | |
745 | print PREAMBLE "# $_=$define{$_}\n"; | |
746 | } | |
747 | ||
748 | if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) { | |
749 | print PREAMBLE | |
750 | "unless (defined &$_) { sub $_() { $1 } }\n\n"; | |
751 | } elsif ($define{$_} =~ /^\w+$/) { | |
752 | print PREAMBLE | |
753 | "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; | |
754 | } else { | |
755 | print PREAMBLE | |
756 | "unless (defined &$_) { sub $_() { \"", | |
757 | quotemeta($define{$_}), "\" } }\n\n"; | |
758 | } | |
759 | } | |
760 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
761 | } | |
762 | ||
763 | ||
764 | # %Config contains information on macros that are pre-defined by the | |
765 | # system's compiler. We need this information to make the .ph files | |
766 | # function with perl as the .h files do with cc. | |
767 | sub _extract_cc_defines | |
768 | { | |
769 | my %define; | |
770 | my $allsymbols = join " ", | |
771 | @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; | |
772 | ||
773 | # Split compiler pre-definitions into `key=value' pairs: | |
774 | foreach (split /\s+/, $allsymbols) { | |
775 | /(.+?)=(.+)/ and $define{$1} = $2; | |
776 | ||
777 | if ($opt_D) { | |
778 | print STDERR "$_: $1 -> $2\n"; | |
779 | } | |
780 | } | |
781 | ||
782 | return %define; | |
783 | } | |
784 | ||
785 | ||
786 | 1; | |
787 | ||
788 | ############################################################################## | |
789 | __END__ | |
790 | ||
791 | =head1 NAME | |
792 | ||
793 | h2ph - convert .h C header files to .ph Perl header files | |
794 | ||
795 | =head1 SYNOPSIS | |
796 | ||
797 | B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> | |
798 | ||
799 | =head1 DESCRIPTION | |
800 | ||
801 | I<h2ph> | |
802 | converts any C header files specified to the corresponding Perl header file | |
803 | format. | |
804 | It is most easily run while in /usr/include: | |
805 | ||
806 | cd /usr/include; h2ph * sys/* | |
807 | ||
808 | or | |
809 | ||
810 | cd /usr/include; h2ph * sys/* arpa/* netinet/* | |
811 | ||
812 | or | |
813 | ||
814 | cd /usr/include; h2ph -r -l . | |
815 | ||
816 | The output files are placed in the hierarchy rooted at Perl's | |
817 | architecture dependent library directory. You can specify a different | |
818 | hierarchy with a B<-d> switch. | |
819 | ||
820 | If run with no arguments, filters standard input to standard output. | |
821 | ||
822 | =head1 OPTIONS | |
823 | ||
824 | =over 4 | |
825 | ||
826 | =item -d destination_dir | |
827 | ||
828 | Put the resulting B<.ph> files beneath B<destination_dir>, instead of | |
829 | beneath the default Perl library location (C<$Config{'installsitsearch'}>). | |
830 | ||
831 | =item -r | |
832 | ||
833 | Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> | |
834 | on all files in those directories (and their subdirectories, etc.). B<-r> | |
835 | and B<-a> are mutually exclusive. | |
836 | ||
837 | =item -a | |
838 | ||
839 | Run automagically; convert B<headerfiles>, as well as any B<.h> files | |
840 | which they include. This option will search for B<.h> files in all | |
841 | directories which your C compiler ordinarily uses. B<-a> and B<-r> are | |
842 | mutually exclusive. | |
843 | ||
844 | =item -l | |
845 | ||
846 | Symbolic links will be replicated in the destination directory. If B<-l> | |
847 | is not specified, then links are skipped over. | |
848 | ||
849 | =item -h | |
850 | ||
851 | Put ``hints'' in the .ph files which will help in locating problems with | |
852 | I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax | |
853 | errors, instead of the cryptic | |
854 | ||
855 | [ some error condition ] at (eval mmm) line nnn | |
856 | ||
857 | you will see the slightly more helpful | |
858 | ||
859 | [ some error condition ] at filename.ph line nnn | |
860 | ||
861 | However, the B<.ph> files almost double in size when built using B<-h>. | |
862 | ||
863 | =item -D | |
864 | ||
865 | Include the code from the B<.h> file as a comment in the B<.ph> file. | |
866 | This is primarily used for debugging I<h2ph>. | |
867 | ||
868 | =item -Q | |
869 | ||
870 | ``Quiet'' mode; don't print out the names of the files being converted. | |
871 | ||
872 | =back | |
873 | ||
874 | =head1 ENVIRONMENT | |
875 | ||
876 | No environment variables are used. | |
877 | ||
878 | =head1 FILES | |
879 | ||
880 | /usr/include/*.h | |
881 | /usr/include/sys/*.h | |
882 | ||
883 | etc. | |
884 | ||
885 | =head1 AUTHOR | |
886 | ||
887 | Larry Wall | |
888 | ||
889 | =head1 SEE ALSO | |
890 | ||
891 | perl(1) | |
892 | ||
893 | =head1 DIAGNOSTICS | |
894 | ||
895 | The usual warnings if it can't read or write the files involved. | |
896 | ||
897 | =head1 BUGS | |
898 | ||
899 | Doesn't construct the %sizeof array for you. | |
900 | ||
901 | It doesn't handle all C constructs, but it does attempt to isolate | |
902 | definitions inside evals so that you can get at the definitions | |
903 | that it can translate. | |
904 | ||
905 | It's only intended as a rough tool. | |
906 | You may need to dicker with the files produced. | |
907 | ||
908 | You have to run this program by hand; it's not run as part of the Perl | |
909 | installation. | |
910 | ||
911 | Doesn't handle complicated expressions built piecemeal, a la: | |
912 | ||
913 | enum { | |
914 | FIRST_VALUE, | |
915 | SECOND_VALUE, | |
916 | #ifdef ABC | |
917 | THIRD_VALUE | |
918 | #endif | |
919 | }; | |
920 | ||
921 | Doesn't necessarily locate all of your C compiler's internally-defined | |
922 | symbols. | |
923 | ||
924 | =cut | |
925 |