Commit | Line | Data |
4633a7c4 |
1 | #!/usr/local/bin/perl |
2 | |
3 | use Config; |
ee580363 |
4 | use File::Basename qw(basename dirname); |
8a5546a1 |
5 | use Cwd; |
4633a7c4 |
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. |
8a5546a1 |
17 | $origdir = cwd; |
44a8e56a |
18 | chdir dirname($0); |
19 | $file = basename($0, '.PL'); |
774d564b |
20 | $file .= '.com' if $^O eq 'VMS'; |
4633a7c4 |
21 | |
22 | open OUT,">$file" or die "Can't create $file: $!"; |
23 | |
24 | print "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 | |
29 | print OUT <<"!GROK!THIS!"; |
5f05dabc |
30 | $Config{startperl} |
31 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
32 | if \$running_under_some_shell; |
154e51a4 |
33 | !GROK!THIS! |
34 | |
4633a7c4 |
35 | # In the following, perl variables are not expanded during extraction. |
36 | |
37 | print OUT <<'!NO!SUBS!'; |
154e51a4 |
38 | |
fc865b05 |
39 | use strict; |
40 | |
2c2acf7e |
41 | use Config; |
b306bf39 |
42 | use File::Path qw(mkpath); |
50f6e060 |
43 | use Getopt::Std; |
44 | |
625ca0ef |
45 | getopts('Dd:rlhaQ'); |
fc865b05 |
46 | use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q); |
1d3434b8 |
47 | die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); |
fc865b05 |
48 | my @inc_dirs = inc_dirs() if $opt_a; |
2c2acf7e |
49 | |
b306bf39 |
50 | my $Exit = 0; |
51 | |
50f6e060 |
52 | my $Dest_dir = $opt_d || $Config{installsitearch}; |
b306bf39 |
53 | die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" |
54 | unless -d $Dest_dir; |
154e51a4 |
55 | |
fc865b05 |
56 | my @isatype = split(' ',<<END); |
fe14fcc3 |
57 | char uchar u_char |
58 | short ushort u_short |
59 | int uint u_int |
60 | long ulong u_long |
fb73857a |
61 | FILE key_t caddr_t |
fe14fcc3 |
62 | END |
63 | |
fc865b05 |
64 | my %isatype; |
55204971 |
65 | @isatype{@isatype} = (1) x @isatype; |
fc865b05 |
66 | my $inif = 0; |
67 | my %Is_converted; |
fe14fcc3 |
68 | |
69 | @ARGV = ('-') unless @ARGV; |
154e51a4 |
70 | |
7f04632d |
71 | build_preamble_if_necessary(); |
72 | |
fc865b05 |
73 | my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); |
74 | my ($incl, $next); |
75 | while (defined (my $file = next_file())) { |
50f6e060 |
76 | if (-l $file and -d $file) { |
77 | link_if_possible($file) if ($opt_l); |
78 | next; |
79 | } |
80 | |
5f05dabc |
81 | # Recover from header files with unbalanced cpp directives |
82 | $t = ''; |
83 | $tab = 0; |
84 | |
50f6e060 |
85 | # $eval_index goes into ``#line'' directives, to help locate syntax errors: |
86 | $eval_index = 1; |
87 | |
fe14fcc3 |
88 | if ($file eq '-') { |
89 | open(IN, "-"); |
90 | open(OUT, ">-"); |
ee580363 |
91 | } else { |
fe14fcc3 |
92 | ($outfile = $file) =~ s/\.h$/.ph/ || next; |
625ca0ef |
93 | print "$file -> $outfile\n" unless $opt_Q; |
fe14fcc3 |
94 | if ($file =~ m|^(.*)/|) { |
95 | $dir = $1; |
b306bf39 |
96 | mkpath "$Dest_dir/$dir"; |
154e51a4 |
97 | } |
1d3434b8 |
98 | |
99 | if ($opt_a) { # automagic mode: locate header file in @inc_dirs |
100 | foreach (@inc_dirs) { |
101 | chdir $_; |
102 | last if -f $file; |
103 | } |
104 | } |
105 | |
b306bf39 |
106 | open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); |
107 | open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; |
154e51a4 |
108 | } |
7f04632d |
109 | |
110 | print OUT "require '_h2ph_pre.ph';\n\n"; |
dccff43d |
111 | |
112 | while (defined (local $_ = next_line($file))) { |
1d2dff63 |
113 | if (s/^\s*\#\s*//) { |
154e51a4 |
114 | if (s/^define\s+(\w+)//) { |
115 | $name = $1; |
116 | $new = ''; |
117 | s/\s+$//; |
1be505aa |
118 | s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 |
154e51a4 |
119 | if (s/^\(([\w,\s]*)\)//) { |
120 | $args = $1; |
b306bf39 |
121 | my $proto = '() '; |
154e51a4 |
122 | if ($args ne '') { |
b306bf39 |
123 | $proto = ''; |
fc865b05 |
124 | foreach my $arg (split(/,\s*/,$args)) { |
55204971 |
125 | $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; |
154e51a4 |
126 | $curargs{$arg} = 1; |
127 | } |
128 | $args =~ s/\b(\w)/\$$1/g; |
129 | $args = "local($args) = \@_;\n$t "; |
130 | } |
131 | s/^\s+//; |
5f05dabc |
132 | expr(); |
ee580363 |
133 | $new =~ s/(["\\])/\\$1/g; #"]); |
134 | $new = reindent($new); |
135 | $args = reindent($args); |
154e51a4 |
136 | if ($t ne '') { |
ee580363 |
137 | $new =~ s/(['\\])/\\$1/g; #']); |
50f6e060 |
138 | if ($opt_h) { |
139 | print OUT $t, |
ee580363 |
140 | "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 |
141 | $eval_index++; |
142 | } else { |
143 | print OUT $t, |
ee580363 |
144 | "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 |
145 | } |
ee580363 |
146 | } else { |
147 | print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; |
154e51a4 |
148 | } |
149 | %curargs = (); |
ee580363 |
150 | } else { |
154e51a4 |
151 | s/^\s+//; |
5f05dabc |
152 | expr(); |
154e51a4 |
153 | $new = 1 if $new eq ''; |
ee580363 |
154 | $new = reindent($new); |
155 | $args = reindent($args); |
154e51a4 |
156 | if ($t ne '') { |
ee580363 |
157 | $new =~ s/(['\\])/\\$1/g; #']); |
7f04632d |
158 | |
50f6e060 |
159 | if ($opt_h) { |
160 | print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; |
161 | $eval_index++; |
162 | } else { |
163 | print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; |
164 | } |
ee580363 |
165 | } else { |
7f04632d |
166 | # Shunt around such directives as `#define FOO FOO': |
167 | next if " \&$name" eq $new; |
168 | |
ee580363 |
169 | print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; |
154e51a4 |
170 | } |
171 | } |
ee580363 |
172 | } elsif (/^(include|import)\s*[<"](.*)[>"]/) { |
173 | ($incl = $2) =~ s/\.h$/.ph/; |
d9d8d8de |
174 | print OUT $t,"require '$incl';\n"; |
ee580363 |
175 | } elsif(/^include_next\s*[<"](.*)[>"]/) { |
176 | ($incl = $1) =~ s/\.h$/.ph/; |
ee580363 |
177 | print OUT ($t, |
1d2dff63 |
178 | "eval {\n"); |
179 | $tab += 4; |
180 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
181 | print OUT ($t, |
182 | "my(\%INCD) = map { \$INC{\$_} => 1 } ", |
183 | "(grep { \$_ eq \"$incl\" } keys(\%INC));\n"); |
184 | print OUT ($t, |
185 | "my(\@REM) = map { \"\$_/$incl\" } ", |
186 | "(grep { not exists(\$INCD{\"\$_/$incl\"})", |
187 | "and -f \"\$_/$incl\" } \@INC);\n"); |
188 | print OUT ($t, |
189 | "require \"\$REM[0]\" if \@REM;\n"); |
190 | $tab -= 4; |
191 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
192 | print OUT ($t, |
193 | "};\n"); |
194 | print OUT ($t, |
195 | "warn(\$\@) if \$\@;\n"); |
ee580363 |
196 | } elsif (/^ifdef\s+(\w+)/) { |
197 | print OUT $t,"if(defined(&$1)) {\n"; |
154e51a4 |
198 | $tab += 4; |
199 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
200 | } elsif (/^ifndef\s+(\w+)/) { |
201 | print OUT $t,"unless(defined(&$1)) {\n"; |
202 | $tab += 4; |
203 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
204 | } elsif (s/^if\s+//) { |
154e51a4 |
205 | $new = ''; |
748a9306 |
206 | $inif = 1; |
5f05dabc |
207 | expr(); |
748a9306 |
208 | $inif = 0; |
ee580363 |
209 | print OUT $t,"if($new) {\n"; |
154e51a4 |
210 | $tab += 4; |
211 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
212 | } elsif (s/^elif\s+//) { |
154e51a4 |
213 | $new = ''; |
748a9306 |
214 | $inif = 1; |
5f05dabc |
215 | expr(); |
748a9306 |
216 | $inif = 0; |
154e51a4 |
217 | $tab -= 4; |
218 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
219 | print OUT $t,"}\n elsif($new) {\n"; |
154e51a4 |
220 | $tab += 4; |
221 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
222 | } elsif (/^else/) { |
154e51a4 |
223 | $tab -= 4; |
224 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
225 | print OUT $t,"} else {\n"; |
154e51a4 |
226 | $tab += 4; |
227 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
228 | } elsif (/^endif/) { |
154e51a4 |
229 | $tab -= 4; |
230 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
231 | print OUT $t,"}\n"; |
ee580363 |
232 | } elsif(/^undef\s+(\w+)/) { |
233 | print OUT $t, "undef(&$1) if defined(&$1);\n"; |
d3e00f1c |
234 | } elsif(/^error\s+(".*")/) { |
235 | print OUT $t, "die($1);\n"; |
ee580363 |
236 | } elsif(/^error\s+(.*)/) { |
5d42aa7b |
237 | print OUT $t, "die(\"", quotemeta($1), "\");\n"; |
ee580363 |
238 | } elsif(/^warning\s+(.*)/) { |
5d42aa7b |
239 | print OUT $t, "warn(\"", quotemeta($1), "\");\n"; |
ee580363 |
240 | } elsif(/^ident\s+(.*)/) { |
241 | print OUT $t, "# $1\n"; |
154e51a4 |
242 | } |
e7cba2ba |
243 | } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { |
244 | until(/\{[^}]*\}.*;/ || /;/) { |
dccff43d |
245 | last unless defined ($next = next_line($file)); |
e7cba2ba |
246 | chomp $next; |
247 | # drop "#define FOO FOO" in enums |
248 | $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; |
1d2dff63 |
249 | $_ .= $next; |
250 | print OUT "# $next\n" if $opt_D; |
251 | } |
e7cba2ba |
252 | s/#\s*if.*?#\s*endif//g; # drop #ifdefs |
1d2dff63 |
253 | s@/\*.*?\*/@@g; |
254 | s/\s+/ /g; |
e7cba2ba |
255 | next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; |
fc865b05 |
256 | (my $enum_subs = $3) =~ s/\s//g; |
257 | my @enum_subs = split(/,/, $enum_subs); |
258 | my $enum_val = -1; |
259 | foreach my $enum (@enum_subs) { |
260 | my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; |
1d2dff63 |
261 | $enum_value =~ s/^=//; |
262 | $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); |
263 | if ($opt_h) { |
264 | print OUT ($t, |
265 | "eval(\"\\n#line $eval_index $outfile\\n", |
266 | "sub $enum_name () \{ $enum_val; \}\") ", |
267 | "unless defined(\&$enum_name);\n"); |
268 | ++ $eval_index; |
269 | } else { |
270 | print OUT ($t, |
271 | "eval(\"sub $enum_name () \{ $enum_val; \}\") ", |
272 | "unless defined(\&$enum_name);\n"); |
273 | } |
274 | } |
154e51a4 |
275 | } |
276 | } |
277 | print OUT "1;\n"; |
1d3434b8 |
278 | |
fc865b05 |
279 | $Is_converted{$file} = 1; |
1d3434b8 |
280 | queue_includes_from($file) if ($opt_a); |
154e51a4 |
281 | } |
282 | |
b306bf39 |
283 | exit $Exit; |
284 | |
fc865b05 |
285 | |
ee580363 |
286 | sub reindent($) { |
287 | my($text) = shift; |
288 | $text =~ s/\n/\n /g; |
289 | $text =~ s/ /\t/g; |
290 | $text; |
291 | } |
292 | |
fc865b05 |
293 | |
154e51a4 |
294 | sub expr { |
fc865b05 |
295 | my $joined_args; |
ee580363 |
296 | if(keys(%curargs)) { |
fc865b05 |
297 | $joined_args = join('|', keys(%curargs)); |
ee580363 |
298 | } |
154e51a4 |
299 | while ($_ ne '') { |
ee580363 |
300 | s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator |
301 | s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of |
154e51a4 |
302 | s/^(\s+)// && do {$new .= ' '; next;}; |
25146a1a |
303 | s/^0X([0-9A-F]+)[UL]*//i |
304 | && do {my $hex = $1; |
305 | $hex =~ s/^0+//; |
306 | if (length $hex > 8 && !$Config{use64bitint}) { |
307 | # Croak if nv_preserves_uv_bits < 64 ? |
308 | $new .= hex(substr($hex, -8)) + |
309 | 2**32 * hex(substr($hex, 0, -8)); |
310 | # The above will produce "errorneus" code |
311 | # if the hex constant was e.g. inside UINT64_C |
312 | # macro, but then again, h2ph is an approximation. |
313 | } else { |
314 | $new .= lc("0x$hex"); |
315 | } |
316 | next;}; |
fd3f0aff |
317 | s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;}; |
50f6e060 |
318 | s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; |
154e51a4 |
319 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; |
320 | s/^'((\\"|[^"])*)'// && do { |
321 | if ($curargs{$1}) { |
322 | $new .= "ord('\$$1')"; |
ee580363 |
323 | } else { |
154e51a4 |
324 | $new .= "ord('$1')"; |
325 | } |
326 | next; |
327 | }; |
5f05dabc |
328 | # replace "sizeof(foo)" with "{foo}" |
329 | # also, remove * (C dereference operator) to avoid perl syntax |
330 | # problems. Where the %sizeof array comes from is anyone's |
331 | # guess (c2ph?), but this at least avoids fatal syntax errors. |
332 | # Behavior is undefined if sizeof() delimiters are unbalanced. |
333 | # This code was modified to able to handle constructs like this: |
334 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. |
335 | s/^sizeof\s*\(// && do { |
336 | $new .= '$sizeof'; |
337 | my $lvl = 1; # already saw one open paren |
338 | # tack { on the front, and skip it in the loop |
339 | $_ = "{" . "$_"; |
340 | my $index = 1; |
341 | # find balanced closing paren |
342 | while ($index <= length($_) && $lvl > 0) { |
343 | $lvl++ if substr($_, $index, 1) eq "("; |
344 | $lvl-- if substr($_, $index, 1) eq ")"; |
345 | $index++; |
346 | } |
347 | # tack } on the end, replacing ) |
348 | substr($_, $index - 1, 1) = "}"; |
349 | # remove pesky * operators within the sizeof argument |
350 | substr($_, 0, $index - 1) =~ s/\*//g; |
351 | next; |
352 | }; |
50f6e060 |
353 | # Eliminate typedefs |
354 | /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { |
355 | foreach (split /\s+/, $1) { # Make sure all the words are types, |
99ed927b |
356 | last unless ($isatype{$_} or $_ eq 'struct' or $_ eq 'union'); |
50f6e060 |
357 | } |
358 | s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. |
359 | }; |
ee580363 |
360 | # struct/union member, including arrays: |
361 | s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { |
fc865b05 |
362 | my $id = $1; |
ee580363 |
363 | $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; |
364 | $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); |
365 | while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { |
366 | my($index) = $1; |
367 | $index =~ s/\s//g; |
368 | if(exists($curargs{$index})) { |
369 | $index = "\$$index"; |
370 | } else { |
371 | $index = "&$index"; |
372 | } |
373 | $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; |
374 | } |
375 | $new .= " (\$$id)"; |
50f6e060 |
376 | }; |
154e51a4 |
377 | s/^([_a-zA-Z]\w*)// && do { |
fc865b05 |
378 | my $id = $1; |
99ed927b |
379 | if ($id eq 'struct' || $id eq 'union') { |
fe14fcc3 |
380 | s/^\s+(\w+)//; |
381 | $id .= ' ' . $1; |
382 | $isatype{$id} = 1; |
ee580363 |
383 | } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { |
50f6e060 |
384 | while (s/^\s+(\w+)//) { $id .= ' ' . $1; } |
fe14fcc3 |
385 | $isatype{$id} = 1; |
386 | } |
154e51a4 |
387 | if ($curargs{$id}) { |
ee580363 |
388 | $new .= "\$$id"; |
389 | $new .= '->' if /^[\[\{]/; |
390 | } elsif ($id eq 'defined') { |
154e51a4 |
391 | $new .= 'defined'; |
cd4e1efa |
392 | } elsif (/^\s*\(/) { |
393 | s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat |
154e51a4 |
394 | $new .= " &$id"; |
ee580363 |
395 | } elsif ($isatype{$id}) { |
fe14fcc3 |
396 | if ($new =~ /{\s*$/) { |
397 | $new .= "'$id'"; |
ee580363 |
398 | } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { |
fe14fcc3 |
399 | $new =~ s/\(\s*$//; |
400 | s/^[\s*]*\)//; |
ee580363 |
401 | } else { |
b276c83d |
402 | $new .= q(').$id.q('); |
fe14fcc3 |
403 | } |
ee580363 |
404 | } else { |
c07a80fd |
405 | if ($inif && $new !~ /defined\s*\($/) { |
748a9306 |
406 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; |
ee580363 |
407 | } elsif (/^\[/) { |
408 | $new .= " \$$id"; |
409 | } else { |
748a9306 |
410 | $new .= ' &' . $id; |
411 | } |
154e51a4 |
412 | } |
413 | next; |
414 | }; |
fb21d8eb |
415 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; |
154e51a4 |
416 | } |
417 | } |
50f6e060 |
418 | |
419 | |
79c1b905 |
420 | sub next_line |
421 | { |
dccff43d |
422 | my $file = shift; |
79c1b905 |
423 | my ($in, $out); |
b7bcf494 |
424 | my $pre_sub_tri_graphs = 1; |
79c1b905 |
425 | |
426 | READ: while (not eof IN) { |
427 | $in .= <IN>; |
428 | chomp $in; |
429 | next unless length $in; |
430 | |
431 | while (length $in) { |
b7bcf494 |
432 | if ($pre_sub_tri_graphs) { |
433 | # Preprocess all tri-graphs |
434 | # including things stuck in quoted string constants. |
435 | $in =~ s/\?\?=/#/g; # | ??=| #| |
436 | $in =~ s/\?\?\!/|/g; # | ??!| || |
437 | $in =~ s/\?\?'/^/g; # | ??'| ^| |
438 | $in =~ s/\?\?\(/[/g; # | ??(| [| |
439 | $in =~ s/\?\?\)/]/g; # | ??)| ]| |
440 | $in =~ s/\?\?\-/~/g; # | ??-| ~| |
441 | $in =~ s/\?\?\//\\/g; # | ??/| \| |
442 | $in =~ s/\?\?</{/g; # | ??<| {| |
443 | $in =~ s/\?\?>/}/g; # | ??>| }| |
444 | } |
9efe82d3 |
445 | if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) { |
446 | # Tru64 disassembler.h evilness: mixed C and Pascal. |
447 | while (<IN>) { |
448 | last if /^\#endif/; |
449 | } |
450 | next READ; |
451 | } |
37723803 |
452 | if ($in =~ /^extern inline / && # Inlined assembler. |
dccff43d |
453 | $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) { |
454 | while (<IN>) { |
455 | last if /^}/; |
456 | } |
457 | next READ; |
458 | } |
79c1b905 |
459 | if ($in =~ s/\\$//) { # \-newline |
460 | $out .= ' '; |
461 | next READ; |
462 | } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough |
463 | $out .= $1; |
464 | } elsif ($in =~ s/^(\\.)//) { # \... |
465 | $out .= $1; |
466 | } elsif ($in =~ s/^('(\\.|[^'\\])*')//) { # '... |
467 | $out .= $1; |
468 | } elsif ($in =~ s/^("(\\.|[^"\\])*")//) { # "... |
469 | $out .= $1; |
470 | } elsif ($in =~ s/^\/\/.*//) { # //... |
edf6e4ec |
471 | # fall through |
79c1b905 |
472 | } elsif ($in =~ m/^\/\*/) { # /*... |
473 | # C comment removal adapted from perlfaq6: |
474 | if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { |
475 | $out .= ' '; |
476 | } else { # Incomplete /* */ |
477 | next READ; |
478 | } |
479 | } elsif ($in =~ s/^(\/)//) { # /... |
480 | $out .= $1; |
481 | } elsif ($in =~ s/^([^\'\"\\\/]+)//) { |
482 | $out .= $1; |
889e303a |
483 | } elsif ($^O eq 'linux' && |
484 | $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! && |
485 | $in =~ s!\'T KNOW!!) { |
486 | $out =~ s!I DON$!I_DO_NOT_KNOW!; |
79c1b905 |
487 | } else { |
dccff43d |
488 | die "Cannot parse:\n$in\n"; |
79c1b905 |
489 | } |
490 | } |
491 | |
edf6e4ec |
492 | last READ if $out =~ /\S/; |
79c1b905 |
493 | } |
494 | |
495 | return $out; |
496 | } |
497 | |
498 | |
50f6e060 |
499 | # Handle recursive subdirectories without getting a grotesquely big stack. |
500 | # Could this be implemented using File::Find? |
501 | sub next_file |
502 | { |
503 | my $file; |
504 | |
505 | while (@ARGV) { |
506 | $file = shift @ARGV; |
507 | |
508 | if ($file eq '-' or -f $file or -l $file) { |
509 | return $file; |
510 | } elsif (-d $file) { |
511 | if ($opt_r) { |
512 | expand_glob($file); |
513 | } else { |
514 | print STDERR "Skipping directory `$file'\n"; |
515 | } |
1d3434b8 |
516 | } elsif ($opt_a) { |
517 | return $file; |
518 | } else { |
50f6e060 |
519 | print STDERR "Skipping `$file': not a file or directory\n"; |
520 | } |
521 | } |
522 | |
523 | return undef; |
524 | } |
525 | |
526 | |
527 | # Put all the files in $directory into @ARGV for processing. |
528 | sub expand_glob |
529 | { |
530 | my ($directory) = @_; |
531 | |
532 | $directory =~ s:/$::; |
533 | |
534 | opendir DIR, $directory; |
535 | foreach (readdir DIR) { |
536 | next if ($_ eq '.' or $_ eq '..'); |
537 | |
538 | # expand_glob() is going to be called until $ARGV[0] isn't a |
539 | # directory; so push directories, and unshift everything else. |
1d3434b8 |
540 | if (-d "$directory/$_") { push @ARGV, "$directory/$_" } |
541 | else { unshift @ARGV, "$directory/$_" } |
50f6e060 |
542 | } |
543 | closedir DIR; |
544 | } |
545 | |
546 | |
547 | # Given $file, a symbolic link to a directory in the C include directory, |
548 | # make an equivalent symbolic link in $Dest_dir, if we can figure out how. |
549 | # Otherwise, just duplicate the file or directory. |
550 | sub link_if_possible |
551 | { |
552 | my ($dirlink) = @_; |
553 | my $target = eval 'readlink($dirlink)'; |
554 | |
555 | if ($target =~ m:^\.\./: or $target =~ m:^/:) { |
556 | # The target of a parent or absolute link could leave the $Dest_dir |
557 | # hierarchy, so let's put all of the contents of $dirlink (actually, |
558 | # the contents of $target) into @ARGV; as a side effect down the |
559 | # line, $dirlink will get created as an _actual_ directory. |
560 | expand_glob($dirlink); |
561 | } else { |
562 | if (-l "$Dest_dir/$dirlink") { |
563 | unlink "$Dest_dir/$dirlink" or |
564 | print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; |
565 | } |
1d3434b8 |
566 | |
50f6e060 |
567 | if (eval 'symlink($target, "$Dest_dir/$dirlink")') { |
568 | print "Linking $target -> $Dest_dir/$dirlink\n"; |
569 | |
570 | # Make sure that the link _links_ to something: |
571 | if (! -e "$Dest_dir/$target") { |
1d3434b8 |
572 | mkpath("$Dest_dir/$target", 0755) or |
50f6e060 |
573 | print STDERR "Could not create $Dest_dir/$target/\n"; |
574 | } |
575 | } else { |
576 | print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; |
577 | } |
578 | } |
579 | } |
580 | |
581 | |
1d3434b8 |
582 | # Push all #included files in $file onto our stack, except for STDIN |
583 | # and files we've already processed. |
584 | sub queue_includes_from |
585 | { |
586 | my ($file) = @_; |
587 | my $line; |
588 | |
589 | return if ($file eq "-"); |
590 | |
591 | open HEADER, $file or return; |
592 | while (defined($line = <HEADER>)) { |
593 | while (/\\$/) { # Handle continuation lines |
594 | chop $line; |
595 | $line .= <HEADER>; |
596 | } |
597 | |
598 | if ($line =~ /^#\s*include\s+<(.*?)>/) { |
fc865b05 |
599 | push(@ARGV, $1) unless $Is_converted{$1}; |
1d3434b8 |
600 | } |
601 | } |
602 | close HEADER; |
603 | } |
604 | |
605 | |
606 | # Determine include directories; $Config{usrinc} should be enough for (all |
607 | # non-GCC?) C compilers, but gcc uses an additional include directory. |
608 | sub inc_dirs |
609 | { |
610 | my $from_gcc = `$Config{cc} -v 2>&1`; |
611 | $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s; |
612 | |
613 | length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); |
614 | } |
615 | |
616 | |
7f04632d |
617 | # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different |
618 | # version of h2ph. |
619 | sub build_preamble_if_necessary |
620 | { |
621 | # Increment $VERSION every time this function is modified: |
00f0ad8c |
622 | my $VERSION = 2; |
7f04632d |
623 | my $preamble = "$Dest_dir/_h2ph_pre.ph"; |
624 | |
625 | # Can we skip building the preamble file? |
626 | if (-r $preamble) { |
627 | # Extract version number from first line of preamble: |
628 | open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; |
629 | my $line = <PREAMBLE>; |
630 | $line =~ /(\b\d+\b)/; |
631 | close PREAMBLE or die "Cannot close $preamble: $!"; |
632 | |
633 | # Don't build preamble if a compatible preamble exists: |
634 | return if $1 == $VERSION; |
635 | } |
636 | |
637 | my (%define) = _extract_cc_defines(); |
638 | |
639 | open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; |
640 | print PREAMBLE "# This file was created by h2ph version $VERSION\n"; |
641 | |
642 | foreach (sort keys %define) { |
643 | if ($opt_D) { |
644 | print PREAMBLE "# $_=$define{$_}\n"; |
645 | } |
646 | |
4322f456 |
647 | if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) { |
7f04632d |
648 | print PREAMBLE |
4322f456 |
649 | "unless (defined &$_) { sub $_() { $1 } }\n\n"; |
00f0ad8c |
650 | } elsif ($define{$_} =~ /^\w+$/) { |
651 | print PREAMBLE |
652 | "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; |
7f04632d |
653 | } else { |
654 | print PREAMBLE |
655 | "unless (defined &$_) { sub $_() { \"", |
656 | quotemeta($define{$_}), "\" } }\n\n"; |
657 | } |
658 | } |
659 | close PREAMBLE or die "Cannot close $preamble: $!"; |
660 | } |
661 | |
662 | |
663 | # %Config contains information on macros that are pre-defined by the |
664 | # system's compiler. We need this information to make the .ph files |
665 | # function with perl as the .h files do with cc. |
666 | sub _extract_cc_defines |
667 | { |
668 | my %define; |
fc865b05 |
669 | my $allsymbols = join " ", |
670 | @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; |
7f04632d |
671 | |
672 | # Split compiler pre-definitions into `key=value' pairs: |
673 | foreach (split /\s+/, $allsymbols) { |
00f0ad8c |
674 | /(.+?)=(.+)/ and $define{$1} = $2; |
7f04632d |
675 | |
676 | if ($opt_D) { |
677 | print STDERR "$_: $1 -> $2\n"; |
678 | } |
679 | } |
680 | |
681 | return %define; |
682 | } |
683 | |
684 | |
50f6e060 |
685 | 1; |
686 | |
154e51a4 |
687 | ############################################################################## |
1fef88e7 |
688 | __END__ |
689 | |
690 | =head1 NAME |
691 | |
692 | h2ph - convert .h C header files to .ph Perl header files |
693 | |
694 | =head1 SYNOPSIS |
695 | |
1d3434b8 |
696 | B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> |
1fef88e7 |
697 | |
698 | =head1 DESCRIPTION |
154e51a4 |
699 | |
1fef88e7 |
700 | I<h2ph> |
154e51a4 |
701 | converts any C header files specified to the corresponding Perl header file |
702 | format. |
703 | It is most easily run while in /usr/include: |
154e51a4 |
704 | |
705 | cd /usr/include; h2ph * sys/* |
706 | |
50f6e060 |
707 | or |
708 | |
ef0ae776 |
709 | cd /usr/include; h2ph * sys/* arpa/* netinet/* |
710 | |
711 | or |
712 | |
50f6e060 |
713 | cd /usr/include; h2ph -r -l . |
714 | |
b306bf39 |
715 | The output files are placed in the hierarchy rooted at Perl's |
716 | architecture dependent library directory. You can specify a different |
717 | hierarchy with a B<-d> switch. |
718 | |
fe14fcc3 |
719 | If run with no arguments, filters standard input to standard output. |
1fef88e7 |
720 | |
50f6e060 |
721 | =head1 OPTIONS |
722 | |
723 | =over 4 |
724 | |
725 | =item -d destination_dir |
726 | |
727 | Put the resulting B<.ph> files beneath B<destination_dir>, instead of |
728 | beneath the default Perl library location (C<$Config{'installsitsearch'}>). |
729 | |
730 | =item -r |
731 | |
732 | Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> |
1d3434b8 |
733 | on all files in those directories (and their subdirectories, etc.). B<-r> |
734 | and B<-a> are mutually exclusive. |
735 | |
736 | =item -a |
737 | |
738 | Run automagically; convert B<headerfiles>, as well as any B<.h> files |
739 | which they include. This option will search for B<.h> files in all |
740 | directories which your C compiler ordinarily uses. B<-a> and B<-r> are |
741 | mutually exclusive. |
50f6e060 |
742 | |
743 | =item -l |
744 | |
745 | Symbolic links will be replicated in the destination directory. If B<-l> |
746 | is not specified, then links are skipped over. |
747 | |
748 | =item -h |
749 | |
750 | Put ``hints'' in the .ph files which will help in locating problems with |
751 | I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax |
752 | errors, instead of the cryptic |
753 | |
754 | [ some error condition ] at (eval mmm) line nnn |
755 | |
756 | you will see the slightly more helpful |
757 | |
758 | [ some error condition ] at filename.ph line nnn |
759 | |
760 | However, the B<.ph> files almost double in size when built using B<-h>. |
761 | |
1d3434b8 |
762 | =item -D |
763 | |
764 | Include the code from the B<.h> file as a comment in the B<.ph> file. |
765 | This is primarily used for debugging I<h2ph>. |
766 | |
7f04632d |
767 | =item -Q |
768 | |
769 | ``Quiet'' mode; don't print out the names of the files being converted. |
770 | |
50f6e060 |
771 | =back |
772 | |
1fef88e7 |
773 | =head1 ENVIRONMENT |
774 | |
154e51a4 |
775 | No environment variables are used. |
1fef88e7 |
776 | |
777 | =head1 FILES |
778 | |
779 | /usr/include/*.h |
780 | /usr/include/sys/*.h |
781 | |
154e51a4 |
782 | etc. |
1fef88e7 |
783 | |
784 | =head1 AUTHOR |
785 | |
154e51a4 |
786 | Larry Wall |
1fef88e7 |
787 | |
788 | =head1 SEE ALSO |
789 | |
154e51a4 |
790 | perl(1) |
1fef88e7 |
791 | |
792 | =head1 DIAGNOSTICS |
793 | |
154e51a4 |
794 | The usual warnings if it can't read or write the files involved. |
1fef88e7 |
795 | |
796 | =head1 BUGS |
797 | |
154e51a4 |
798 | Doesn't construct the %sizeof array for you. |
1fef88e7 |
799 | |
154e51a4 |
800 | It doesn't handle all C constructs, but it does attempt to isolate |
801 | definitions inside evals so that you can get at the definitions |
802 | that it can translate. |
1fef88e7 |
803 | |
154e51a4 |
804 | It's only intended as a rough tool. |
805 | You may need to dicker with the files produced. |
1fef88e7 |
806 | |
7f04632d |
807 | You have to run this program by hand; it's not run as part of the Perl |
808 | installation. |
809 | |
810 | Doesn't handle complicated expressions built piecemeal, a la: |
811 | |
812 | enum { |
813 | FIRST_VALUE, |
814 | SECOND_VALUE, |
815 | #ifdef ABC |
816 | THIRD_VALUE |
817 | #endif |
818 | }; |
819 | |
820 | Doesn't necessarily locate all of your C compiler's internally-defined |
821 | symbols. |
822 | |
1fef88e7 |
823 | =cut |
824 | |
154e51a4 |
825 | !NO!SUBS! |
4633a7c4 |
826 | |
827 | close OUT or die "Can't close $file: $!"; |
828 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
829 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |
8a5546a1 |
830 | chdir $origdir; |