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 $Config{perlpath} -S \$0 \${1+"\$@"}' |
32 | if \$running_under_some_shell; |
154e51a4 |
33 | !GROK!THIS! |
34 | |
4633a7c4 |
35 | # In the following, perl variables are not expanded during extraction. |
36 | |
37 | print OUT <<'!NO!SUBS!'; |
154e51a4 |
38 | |
fc865b05 |
39 | use strict; |
40 | |
2c2acf7e |
41 | use Config; |
b306bf39 |
42 | use File::Path qw(mkpath); |
50f6e060 |
43 | use Getopt::Std; |
44 | |
80d6dabb |
45 | # Make sure read permissions for all are set: |
46 | if (defined umask && (umask() & 0444)) { |
47 | umask (umask() & ~0444); |
48 | } |
49 | |
917244ce |
50 | getopts('Dd:rlhaQe'); |
51 | use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e); |
1d3434b8 |
52 | die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); |
fc865b05 |
53 | my @inc_dirs = inc_dirs() if $opt_a; |
2c2acf7e |
54 | |
b306bf39 |
55 | my $Exit = 0; |
56 | |
50f6e060 |
57 | my $Dest_dir = $opt_d || $Config{installsitearch}; |
b306bf39 |
58 | die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" |
59 | unless -d $Dest_dir; |
154e51a4 |
60 | |
fc865b05 |
61 | my @isatype = split(' ',<<END); |
fe14fcc3 |
62 | char uchar u_char |
63 | short ushort u_short |
64 | int uint u_int |
65 | long ulong u_long |
fb73857a |
66 | FILE key_t caddr_t |
fe14fcc3 |
67 | END |
68 | |
fc865b05 |
69 | my %isatype; |
55204971 |
70 | @isatype{@isatype} = (1) x @isatype; |
fc865b05 |
71 | my $inif = 0; |
72 | my %Is_converted; |
917244ce |
73 | my %bad_file = (); |
fe14fcc3 |
74 | |
75 | @ARGV = ('-') unless @ARGV; |
154e51a4 |
76 | |
7f04632d |
77 | build_preamble_if_necessary(); |
78 | |
917244ce |
79 | sub reindent($) { |
80 | my($text) = shift; |
81 | $text =~ s/\n/\n /g; |
82 | $text =~ s/ /\t/g; |
83 | $text; |
84 | } |
85 | |
fc865b05 |
86 | my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); |
917244ce |
87 | my ($incl, $incl_type, $next); |
fc865b05 |
88 | while (defined (my $file = next_file())) { |
50f6e060 |
89 | if (-l $file and -d $file) { |
90 | link_if_possible($file) if ($opt_l); |
91 | next; |
92 | } |
93 | |
5f05dabc |
94 | # Recover from header files with unbalanced cpp directives |
95 | $t = ''; |
96 | $tab = 0; |
97 | |
50f6e060 |
98 | # $eval_index goes into ``#line'' directives, to help locate syntax errors: |
99 | $eval_index = 1; |
100 | |
fe14fcc3 |
101 | if ($file eq '-') { |
102 | open(IN, "-"); |
103 | open(OUT, ">-"); |
ee580363 |
104 | } else { |
fe14fcc3 |
105 | ($outfile = $file) =~ s/\.h$/.ph/ || next; |
625ca0ef |
106 | print "$file -> $outfile\n" unless $opt_Q; |
fe14fcc3 |
107 | if ($file =~ m|^(.*)/|) { |
108 | $dir = $1; |
b306bf39 |
109 | mkpath "$Dest_dir/$dir"; |
154e51a4 |
110 | } |
1d3434b8 |
111 | |
112 | if ($opt_a) { # automagic mode: locate header file in @inc_dirs |
113 | foreach (@inc_dirs) { |
114 | chdir $_; |
115 | last if -f $file; |
116 | } |
117 | } |
118 | |
b306bf39 |
119 | open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); |
120 | open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; |
154e51a4 |
121 | } |
7f04632d |
122 | |
ccfcdfed |
123 | print OUT |
124 | "require '_h2ph_pre.ph';\n\n", |
125 | "no warnings 'redefine';\n\n"; |
dccff43d |
126 | |
127 | while (defined (local $_ = next_line($file))) { |
1d2dff63 |
128 | if (s/^\s*\#\s*//) { |
154e51a4 |
129 | if (s/^define\s+(\w+)//) { |
130 | $name = $1; |
131 | $new = ''; |
132 | s/\s+$//; |
1be505aa |
133 | s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 |
154e51a4 |
134 | if (s/^\(([\w,\s]*)\)//) { |
135 | $args = $1; |
b306bf39 |
136 | my $proto = '() '; |
154e51a4 |
137 | if ($args ne '') { |
b306bf39 |
138 | $proto = ''; |
fc865b05 |
139 | foreach my $arg (split(/,\s*/,$args)) { |
55204971 |
140 | $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; |
154e51a4 |
141 | $curargs{$arg} = 1; |
142 | } |
143 | $args =~ s/\b(\w)/\$$1/g; |
144 | $args = "local($args) = \@_;\n$t "; |
145 | } |
146 | s/^\s+//; |
5f05dabc |
147 | expr(); |
ee580363 |
148 | $new =~ s/(["\\])/\\$1/g; #"]); |
149 | $new = reindent($new); |
150 | $args = reindent($args); |
154e51a4 |
151 | if ($t ne '') { |
ee580363 |
152 | $new =~ s/(['\\])/\\$1/g; #']); |
50f6e060 |
153 | if ($opt_h) { |
154 | print OUT $t, |
ee580363 |
155 | "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 |
156 | $eval_index++; |
157 | } else { |
158 | print OUT $t, |
ee580363 |
159 | "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 |
160 | } |
ee580363 |
161 | } else { |
162 | print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; |
154e51a4 |
163 | } |
164 | %curargs = (); |
ee580363 |
165 | } else { |
154e51a4 |
166 | s/^\s+//; |
5f05dabc |
167 | expr(); |
154e51a4 |
168 | $new = 1 if $new eq ''; |
ee580363 |
169 | $new = reindent($new); |
170 | $args = reindent($args); |
154e51a4 |
171 | if ($t ne '') { |
ee580363 |
172 | $new =~ s/(['\\])/\\$1/g; #']); |
7f04632d |
173 | |
50f6e060 |
174 | if ($opt_h) { |
175 | print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; |
176 | $eval_index++; |
177 | } else { |
178 | print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; |
179 | } |
ee580363 |
180 | } else { |
7f04632d |
181 | # Shunt around such directives as `#define FOO FOO': |
182 | next if " \&$name" eq $new; |
183 | |
ee580363 |
184 | print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; |
154e51a4 |
185 | } |
186 | } |
917244ce |
187 | } elsif (/^(include|import|include_next)\s*[<\"](.*)[>\"]/) { |
188 | $incl_type = $1; |
189 | $incl = $2; |
190 | if (($incl_type eq 'include_next') || |
191 | ($opt_e && exists($bad_file{$incl}))) { |
192 | $incl =~ s/\.h$/.ph/; |
ee580363 |
193 | print OUT ($t, |
1d2dff63 |
194 | "eval {\n"); |
195 | $tab += 4; |
196 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
917244ce |
197 | print OUT ($t, "my(\@REM);\n"); |
198 | if ($incl_type eq 'include_next') { |
1d2dff63 |
199 | print OUT ($t, |
200 | "my(\%INCD) = map { \$INC{\$_} => 1 } ", |
917244ce |
201 | "(grep { \$_ eq \"$incl\" } ", |
202 | "keys(\%INC));\n"); |
1d2dff63 |
203 | print OUT ($t, |
917244ce |
204 | "\@REM = map { \"\$_/$incl\" } ", |
1d2dff63 |
205 | "(grep { not exists(\$INCD{\"\$_/$incl\"})", |
917244ce |
206 | " and -f \"\$_/$incl\" } \@INC);\n"); |
207 | } else { |
208 | print OUT ($t, |
209 | "\@REM = map { \"\$_/$incl\" } ", |
210 | "(grep {-r \"\$_/$incl\" } \@INC);\n"); |
211 | } |
1d2dff63 |
212 | print OUT ($t, |
213 | "require \"\$REM[0]\" if \@REM;\n"); |
214 | $tab -= 4; |
215 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
216 | print OUT ($t, |
217 | "};\n"); |
218 | print OUT ($t, |
219 | "warn(\$\@) if \$\@;\n"); |
917244ce |
220 | } else { |
221 | $incl =~ s/\.h$/.ph/; |
222 | print OUT $t,"require '$incl';\n"; |
223 | } |
ee580363 |
224 | } elsif (/^ifdef\s+(\w+)/) { |
225 | print OUT $t,"if(defined(&$1)) {\n"; |
154e51a4 |
226 | $tab += 4; |
227 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
228 | } elsif (/^ifndef\s+(\w+)/) { |
229 | print OUT $t,"unless(defined(&$1)) {\n"; |
230 | $tab += 4; |
231 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
232 | } elsif (s/^if\s+//) { |
154e51a4 |
233 | $new = ''; |
748a9306 |
234 | $inif = 1; |
5f05dabc |
235 | expr(); |
748a9306 |
236 | $inif = 0; |
ee580363 |
237 | print OUT $t,"if($new) {\n"; |
154e51a4 |
238 | $tab += 4; |
239 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
240 | } elsif (s/^elif\s+//) { |
154e51a4 |
241 | $new = ''; |
748a9306 |
242 | $inif = 1; |
5f05dabc |
243 | expr(); |
748a9306 |
244 | $inif = 0; |
154e51a4 |
245 | $tab -= 4; |
246 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
247 | print OUT $t,"}\n elsif($new) {\n"; |
154e51a4 |
248 | $tab += 4; |
249 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
250 | } elsif (/^else/) { |
154e51a4 |
251 | $tab -= 4; |
252 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
253 | print OUT $t,"} else {\n"; |
154e51a4 |
254 | $tab += 4; |
255 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
ee580363 |
256 | } elsif (/^endif/) { |
154e51a4 |
257 | $tab -= 4; |
258 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
259 | print OUT $t,"}\n"; |
ee580363 |
260 | } elsif(/^undef\s+(\w+)/) { |
261 | print OUT $t, "undef(&$1) if defined(&$1);\n"; |
d3e00f1c |
262 | } elsif(/^error\s+(".*")/) { |
263 | print OUT $t, "die($1);\n"; |
ee580363 |
264 | } elsif(/^error\s+(.*)/) { |
5d42aa7b |
265 | print OUT $t, "die(\"", quotemeta($1), "\");\n"; |
ee580363 |
266 | } elsif(/^warning\s+(.*)/) { |
5d42aa7b |
267 | print OUT $t, "warn(\"", quotemeta($1), "\");\n"; |
ee580363 |
268 | } elsif(/^ident\s+(.*)/) { |
269 | print OUT $t, "# $1\n"; |
154e51a4 |
270 | } |
e7cba2ba |
271 | } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { |
272 | until(/\{[^}]*\}.*;/ || /;/) { |
dccff43d |
273 | last unless defined ($next = next_line($file)); |
e7cba2ba |
274 | chomp $next; |
275 | # drop "#define FOO FOO" in enums |
276 | $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; |
1d2dff63 |
277 | $_ .= $next; |
278 | print OUT "# $next\n" if $opt_D; |
279 | } |
e7cba2ba |
280 | s/#\s*if.*?#\s*endif//g; # drop #ifdefs |
1d2dff63 |
281 | s@/\*.*?\*/@@g; |
282 | s/\s+/ /g; |
e7cba2ba |
283 | next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; |
fc865b05 |
284 | (my $enum_subs = $3) =~ s/\s//g; |
285 | my @enum_subs = split(/,/, $enum_subs); |
286 | my $enum_val = -1; |
287 | foreach my $enum (@enum_subs) { |
288 | my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; |
1d2dff63 |
289 | $enum_value =~ s/^=//; |
290 | $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); |
291 | if ($opt_h) { |
292 | print OUT ($t, |
293 | "eval(\"\\n#line $eval_index $outfile\\n", |
294 | "sub $enum_name () \{ $enum_val; \}\") ", |
295 | "unless defined(\&$enum_name);\n"); |
296 | ++ $eval_index; |
297 | } else { |
298 | print OUT ($t, |
299 | "eval(\"sub $enum_name () \{ $enum_val; \}\") ", |
300 | "unless defined(\&$enum_name);\n"); |
301 | } |
302 | } |
154e51a4 |
303 | } |
304 | } |
fc865b05 |
305 | $Is_converted{$file} = 1; |
917244ce |
306 | if ($opt_e && exists($bad_file{$file})) { |
307 | unlink($Dest_dir . '/' . $outfile); |
308 | $next = ''; |
309 | } else { |
310 | print OUT "1;\n"; |
1d3434b8 |
311 | queue_includes_from($file) if ($opt_a); |
917244ce |
312 | } |
154e51a4 |
313 | } |
314 | |
917244ce |
315 | if ($opt_e && (scalar(keys %bad_file) > 0)) { |
316 | warn "Was unable to convert the following files:\n"; |
317 | warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n"; |
ee580363 |
318 | } |
319 | |
917244ce |
320 | exit $Exit; |
fc865b05 |
321 | |
154e51a4 |
322 | sub expr { |
fc865b05 |
323 | my $joined_args; |
ee580363 |
324 | if(keys(%curargs)) { |
fc865b05 |
325 | $joined_args = join('|', keys(%curargs)); |
ee580363 |
326 | } |
154e51a4 |
327 | while ($_ ne '') { |
ee580363 |
328 | s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator |
329 | s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of |
154e51a4 |
330 | s/^(\s+)// && do {$new .= ' '; next;}; |
25146a1a |
331 | s/^0X([0-9A-F]+)[UL]*//i |
332 | && do {my $hex = $1; |
333 | $hex =~ s/^0+//; |
334 | if (length $hex > 8 && !$Config{use64bitint}) { |
335 | # Croak if nv_preserves_uv_bits < 64 ? |
336 | $new .= hex(substr($hex, -8)) + |
337 | 2**32 * hex(substr($hex, 0, -8)); |
338 | # The above will produce "errorneus" code |
339 | # if the hex constant was e.g. inside UINT64_C |
340 | # macro, but then again, h2ph is an approximation. |
341 | } else { |
342 | $new .= lc("0x$hex"); |
343 | } |
344 | next;}; |
fd3f0aff |
345 | s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;}; |
50f6e060 |
346 | s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; |
154e51a4 |
347 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; |
348 | s/^'((\\"|[^"])*)'// && do { |
349 | if ($curargs{$1}) { |
350 | $new .= "ord('\$$1')"; |
ee580363 |
351 | } else { |
154e51a4 |
352 | $new .= "ord('$1')"; |
353 | } |
354 | next; |
355 | }; |
5f05dabc |
356 | # replace "sizeof(foo)" with "{foo}" |
357 | # also, remove * (C dereference operator) to avoid perl syntax |
358 | # problems. Where the %sizeof array comes from is anyone's |
359 | # guess (c2ph?), but this at least avoids fatal syntax errors. |
360 | # Behavior is undefined if sizeof() delimiters are unbalanced. |
361 | # This code was modified to able to handle constructs like this: |
362 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. |
363 | s/^sizeof\s*\(// && do { |
364 | $new .= '$sizeof'; |
365 | my $lvl = 1; # already saw one open paren |
366 | # tack { on the front, and skip it in the loop |
367 | $_ = "{" . "$_"; |
368 | my $index = 1; |
369 | # find balanced closing paren |
370 | while ($index <= length($_) && $lvl > 0) { |
371 | $lvl++ if substr($_, $index, 1) eq "("; |
372 | $lvl-- if substr($_, $index, 1) eq ")"; |
373 | $index++; |
374 | } |
375 | # tack } on the end, replacing ) |
376 | substr($_, $index - 1, 1) = "}"; |
377 | # remove pesky * operators within the sizeof argument |
378 | substr($_, 0, $index - 1) =~ s/\*//g; |
379 | next; |
380 | }; |
50f6e060 |
381 | # Eliminate typedefs |
382 | /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { |
383 | foreach (split /\s+/, $1) { # Make sure all the words are types, |
99ed927b |
384 | last unless ($isatype{$_} or $_ eq 'struct' or $_ eq 'union'); |
50f6e060 |
385 | } |
386 | s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. |
387 | }; |
ee580363 |
388 | # struct/union member, including arrays: |
389 | s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { |
fc865b05 |
390 | my $id = $1; |
ee580363 |
391 | $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; |
392 | $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); |
393 | while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { |
394 | my($index) = $1; |
395 | $index =~ s/\s//g; |
396 | if(exists($curargs{$index})) { |
397 | $index = "\$$index"; |
398 | } else { |
399 | $index = "&$index"; |
400 | } |
401 | $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; |
402 | } |
403 | $new .= " (\$$id)"; |
50f6e060 |
404 | }; |
154e51a4 |
405 | s/^([_a-zA-Z]\w*)// && do { |
fc865b05 |
406 | my $id = $1; |
99ed927b |
407 | if ($id eq 'struct' || $id eq 'union') { |
fe14fcc3 |
408 | s/^\s+(\w+)//; |
409 | $id .= ' ' . $1; |
410 | $isatype{$id} = 1; |
ee580363 |
411 | } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { |
50f6e060 |
412 | while (s/^\s+(\w+)//) { $id .= ' ' . $1; } |
fe14fcc3 |
413 | $isatype{$id} = 1; |
414 | } |
154e51a4 |
415 | if ($curargs{$id}) { |
ee580363 |
416 | $new .= "\$$id"; |
417 | $new .= '->' if /^[\[\{]/; |
418 | } elsif ($id eq 'defined') { |
154e51a4 |
419 | $new .= 'defined'; |
cd4e1efa |
420 | } elsif (/^\s*\(/) { |
421 | s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat |
154e51a4 |
422 | $new .= " &$id"; |
ee580363 |
423 | } elsif ($isatype{$id}) { |
fe14fcc3 |
424 | if ($new =~ /{\s*$/) { |
425 | $new .= "'$id'"; |
ee580363 |
426 | } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { |
fe14fcc3 |
427 | $new =~ s/\(\s*$//; |
428 | s/^[\s*]*\)//; |
ee580363 |
429 | } else { |
b276c83d |
430 | $new .= q(').$id.q('); |
fe14fcc3 |
431 | } |
ee580363 |
432 | } else { |
c07a80fd |
433 | if ($inif && $new !~ /defined\s*\($/) { |
748a9306 |
434 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; |
ee580363 |
435 | } elsif (/^\[/) { |
436 | $new .= " \$$id"; |
437 | } else { |
748a9306 |
438 | $new .= ' &' . $id; |
439 | } |
154e51a4 |
440 | } |
441 | next; |
442 | }; |
fb21d8eb |
443 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; |
154e51a4 |
444 | } |
445 | } |
50f6e060 |
446 | |
447 | |
79c1b905 |
448 | sub next_line |
449 | { |
dccff43d |
450 | my $file = shift; |
79c1b905 |
451 | my ($in, $out); |
b7bcf494 |
452 | my $pre_sub_tri_graphs = 1; |
79c1b905 |
453 | |
454 | READ: while (not eof IN) { |
455 | $in .= <IN>; |
456 | chomp $in; |
457 | next unless length $in; |
458 | |
459 | while (length $in) { |
b7bcf494 |
460 | if ($pre_sub_tri_graphs) { |
461 | # Preprocess all tri-graphs |
462 | # including things stuck in quoted string constants. |
463 | $in =~ s/\?\?=/#/g; # | ??=| #| |
464 | $in =~ s/\?\?\!/|/g; # | ??!| || |
465 | $in =~ s/\?\?'/^/g; # | ??'| ^| |
466 | $in =~ s/\?\?\(/[/g; # | ??(| [| |
467 | $in =~ s/\?\?\)/]/g; # | ??)| ]| |
468 | $in =~ s/\?\?\-/~/g; # | ??-| ~| |
469 | $in =~ s/\?\?\//\\/g; # | ??/| \| |
470 | $in =~ s/\?\?</{/g; # | ??<| {| |
471 | $in =~ s/\?\?>/}/g; # | ??>| }| |
472 | } |
9efe82d3 |
473 | if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) { |
474 | # Tru64 disassembler.h evilness: mixed C and Pascal. |
475 | while (<IN>) { |
476 | last if /^\#endif/; |
477 | } |
478 | next READ; |
479 | } |
37723803 |
480 | if ($in =~ /^extern inline / && # Inlined assembler. |
dccff43d |
481 | $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) { |
482 | while (<IN>) { |
483 | last if /^}/; |
484 | } |
485 | next READ; |
486 | } |
79c1b905 |
487 | if ($in =~ s/\\$//) { # \-newline |
488 | $out .= ' '; |
489 | next READ; |
490 | } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough |
491 | $out .= $1; |
492 | } elsif ($in =~ s/^(\\.)//) { # \... |
493 | $out .= $1; |
ab5fe4d6 |
494 | } elsif ($in =~ /^'/) { # '... |
495 | if ($in =~ s/^('(\\.|[^'\\])*')//) { |
496 | $out .= $1; |
497 | } else { |
498 | next READ; |
499 | } |
500 | } elsif ($in =~ /^"/) { # "... |
501 | if ($in =~ s/^("(\\.|[^"\\])*")//) { |
502 | $out .= $1; |
503 | } else { |
504 | next READ; |
505 | } |
79c1b905 |
506 | } elsif ($in =~ s/^\/\/.*//) { # //... |
edf6e4ec |
507 | # fall through |
79c1b905 |
508 | } elsif ($in =~ m/^\/\*/) { # /*... |
509 | # C comment removal adapted from perlfaq6: |
510 | if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { |
511 | $out .= ' '; |
512 | } else { # Incomplete /* */ |
513 | next READ; |
514 | } |
515 | } elsif ($in =~ s/^(\/)//) { # /... |
516 | $out .= $1; |
517 | } elsif ($in =~ s/^([^\'\"\\\/]+)//) { |
518 | $out .= $1; |
889e303a |
519 | } elsif ($^O eq 'linux' && |
520 | $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! && |
521 | $in =~ s!\'T KNOW!!) { |
522 | $out =~ s!I DON$!I_DO_NOT_KNOW!; |
79c1b905 |
523 | } else { |
917244ce |
524 | if ($opt_e) { |
525 | warn "Cannot parse $file:\n$in\n"; |
526 | $bad_file{$file} = 1; |
527 | $in = ''; |
528 | $out = undef; |
529 | last READ; |
530 | } else { |
dccff43d |
531 | die "Cannot parse:\n$in\n"; |
917244ce |
532 | } |
79c1b905 |
533 | } |
534 | } |
535 | |
edf6e4ec |
536 | last READ if $out =~ /\S/; |
79c1b905 |
537 | } |
538 | |
539 | return $out; |
540 | } |
541 | |
542 | |
50f6e060 |
543 | # Handle recursive subdirectories without getting a grotesquely big stack. |
544 | # Could this be implemented using File::Find? |
545 | sub next_file |
546 | { |
547 | my $file; |
548 | |
549 | while (@ARGV) { |
550 | $file = shift @ARGV; |
551 | |
552 | if ($file eq '-' or -f $file or -l $file) { |
553 | return $file; |
554 | } elsif (-d $file) { |
555 | if ($opt_r) { |
556 | expand_glob($file); |
557 | } else { |
558 | print STDERR "Skipping directory `$file'\n"; |
559 | } |
1d3434b8 |
560 | } elsif ($opt_a) { |
561 | return $file; |
562 | } else { |
50f6e060 |
563 | print STDERR "Skipping `$file': not a file or directory\n"; |
564 | } |
565 | } |
566 | |
567 | return undef; |
568 | } |
569 | |
570 | |
571 | # Put all the files in $directory into @ARGV for processing. |
572 | sub expand_glob |
573 | { |
574 | my ($directory) = @_; |
575 | |
576 | $directory =~ s:/$::; |
577 | |
578 | opendir DIR, $directory; |
579 | foreach (readdir DIR) { |
580 | next if ($_ eq '.' or $_ eq '..'); |
581 | |
582 | # expand_glob() is going to be called until $ARGV[0] isn't a |
583 | # directory; so push directories, and unshift everything else. |
1d3434b8 |
584 | if (-d "$directory/$_") { push @ARGV, "$directory/$_" } |
585 | else { unshift @ARGV, "$directory/$_" } |
50f6e060 |
586 | } |
587 | closedir DIR; |
588 | } |
589 | |
590 | |
591 | # Given $file, a symbolic link to a directory in the C include directory, |
592 | # make an equivalent symbolic link in $Dest_dir, if we can figure out how. |
593 | # Otherwise, just duplicate the file or directory. |
594 | sub link_if_possible |
595 | { |
596 | my ($dirlink) = @_; |
597 | my $target = eval 'readlink($dirlink)'; |
598 | |
599 | if ($target =~ m:^\.\./: or $target =~ m:^/:) { |
600 | # The target of a parent or absolute link could leave the $Dest_dir |
601 | # hierarchy, so let's put all of the contents of $dirlink (actually, |
602 | # the contents of $target) into @ARGV; as a side effect down the |
603 | # line, $dirlink will get created as an _actual_ directory. |
604 | expand_glob($dirlink); |
605 | } else { |
606 | if (-l "$Dest_dir/$dirlink") { |
607 | unlink "$Dest_dir/$dirlink" or |
608 | print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; |
609 | } |
1d3434b8 |
610 | |
50f6e060 |
611 | if (eval 'symlink($target, "$Dest_dir/$dirlink")') { |
612 | print "Linking $target -> $Dest_dir/$dirlink\n"; |
613 | |
614 | # Make sure that the link _links_ to something: |
615 | if (! -e "$Dest_dir/$target") { |
1d3434b8 |
616 | mkpath("$Dest_dir/$target", 0755) or |
50f6e060 |
617 | print STDERR "Could not create $Dest_dir/$target/\n"; |
618 | } |
619 | } else { |
620 | print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; |
621 | } |
622 | } |
623 | } |
624 | |
625 | |
1d3434b8 |
626 | # Push all #included files in $file onto our stack, except for STDIN |
627 | # and files we've already processed. |
628 | sub queue_includes_from |
629 | { |
630 | my ($file) = @_; |
631 | my $line; |
632 | |
633 | return if ($file eq "-"); |
634 | |
635 | open HEADER, $file or return; |
636 | while (defined($line = <HEADER>)) { |
637 | while (/\\$/) { # Handle continuation lines |
638 | chop $line; |
639 | $line .= <HEADER>; |
640 | } |
641 | |
642 | if ($line =~ /^#\s*include\s+<(.*?)>/) { |
fc865b05 |
643 | push(@ARGV, $1) unless $Is_converted{$1}; |
1d3434b8 |
644 | } |
645 | } |
646 | close HEADER; |
647 | } |
648 | |
649 | |
650 | # Determine include directories; $Config{usrinc} should be enough for (all |
651 | # non-GCC?) C compilers, but gcc uses an additional include directory. |
652 | sub inc_dirs |
653 | { |
654 | my $from_gcc = `$Config{cc} -v 2>&1`; |
655 | $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s; |
656 | |
657 | length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); |
658 | } |
659 | |
660 | |
7f04632d |
661 | # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different |
662 | # version of h2ph. |
663 | sub build_preamble_if_necessary |
664 | { |
665 | # Increment $VERSION every time this function is modified: |
00f0ad8c |
666 | my $VERSION = 2; |
7f04632d |
667 | my $preamble = "$Dest_dir/_h2ph_pre.ph"; |
668 | |
669 | # Can we skip building the preamble file? |
670 | if (-r $preamble) { |
671 | # Extract version number from first line of preamble: |
672 | open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; |
673 | my $line = <PREAMBLE>; |
674 | $line =~ /(\b\d+\b)/; |
675 | close PREAMBLE or die "Cannot close $preamble: $!"; |
676 | |
677 | # Don't build preamble if a compatible preamble exists: |
678 | return if $1 == $VERSION; |
679 | } |
680 | |
681 | my (%define) = _extract_cc_defines(); |
682 | |
683 | open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; |
684 | print PREAMBLE "# This file was created by h2ph version $VERSION\n"; |
685 | |
686 | foreach (sort keys %define) { |
687 | if ($opt_D) { |
688 | print PREAMBLE "# $_=$define{$_}\n"; |
689 | } |
690 | |
4322f456 |
691 | if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) { |
7f04632d |
692 | print PREAMBLE |
4322f456 |
693 | "unless (defined &$_) { sub $_() { $1 } }\n\n"; |
00f0ad8c |
694 | } elsif ($define{$_} =~ /^\w+$/) { |
695 | print PREAMBLE |
696 | "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; |
7f04632d |
697 | } else { |
698 | print PREAMBLE |
699 | "unless (defined &$_) { sub $_() { \"", |
700 | quotemeta($define{$_}), "\" } }\n\n"; |
701 | } |
702 | } |
703 | close PREAMBLE or die "Cannot close $preamble: $!"; |
704 | } |
705 | |
706 | |
707 | # %Config contains information on macros that are pre-defined by the |
708 | # system's compiler. We need this information to make the .ph files |
709 | # function with perl as the .h files do with cc. |
710 | sub _extract_cc_defines |
711 | { |
712 | my %define; |
fc865b05 |
713 | my $allsymbols = join " ", |
714 | @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; |
7f04632d |
715 | |
716 | # Split compiler pre-definitions into `key=value' pairs: |
717 | foreach (split /\s+/, $allsymbols) { |
00f0ad8c |
718 | /(.+?)=(.+)/ and $define{$1} = $2; |
7f04632d |
719 | |
720 | if ($opt_D) { |
721 | print STDERR "$_: $1 -> $2\n"; |
722 | } |
723 | } |
724 | |
725 | return %define; |
726 | } |
727 | |
728 | |
50f6e060 |
729 | 1; |
730 | |
154e51a4 |
731 | ############################################################################## |
1fef88e7 |
732 | __END__ |
733 | |
734 | =head1 NAME |
735 | |
736 | h2ph - convert .h C header files to .ph Perl header files |
737 | |
738 | =head1 SYNOPSIS |
739 | |
1d3434b8 |
740 | B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> |
1fef88e7 |
741 | |
742 | =head1 DESCRIPTION |
154e51a4 |
743 | |
1fef88e7 |
744 | I<h2ph> |
154e51a4 |
745 | converts any C header files specified to the corresponding Perl header file |
746 | format. |
747 | It is most easily run while in /usr/include: |
154e51a4 |
748 | |
749 | cd /usr/include; h2ph * sys/* |
750 | |
50f6e060 |
751 | or |
752 | |
ef0ae776 |
753 | cd /usr/include; h2ph * sys/* arpa/* netinet/* |
754 | |
755 | or |
756 | |
50f6e060 |
757 | cd /usr/include; h2ph -r -l . |
758 | |
b306bf39 |
759 | The output files are placed in the hierarchy rooted at Perl's |
760 | architecture dependent library directory. You can specify a different |
761 | hierarchy with a B<-d> switch. |
762 | |
fe14fcc3 |
763 | If run with no arguments, filters standard input to standard output. |
1fef88e7 |
764 | |
50f6e060 |
765 | =head1 OPTIONS |
766 | |
767 | =over 4 |
768 | |
769 | =item -d destination_dir |
770 | |
771 | Put the resulting B<.ph> files beneath B<destination_dir>, instead of |
772 | beneath the default Perl library location (C<$Config{'installsitsearch'}>). |
773 | |
774 | =item -r |
775 | |
776 | Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> |
1d3434b8 |
777 | on all files in those directories (and their subdirectories, etc.). B<-r> |
778 | and B<-a> are mutually exclusive. |
779 | |
780 | =item -a |
781 | |
782 | Run automagically; convert B<headerfiles>, as well as any B<.h> files |
783 | which they include. This option will search for B<.h> files in all |
784 | directories which your C compiler ordinarily uses. B<-a> and B<-r> are |
785 | mutually exclusive. |
50f6e060 |
786 | |
787 | =item -l |
788 | |
789 | Symbolic links will be replicated in the destination directory. If B<-l> |
790 | is not specified, then links are skipped over. |
791 | |
792 | =item -h |
793 | |
794 | Put ``hints'' in the .ph files which will help in locating problems with |
795 | I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax |
796 | errors, instead of the cryptic |
797 | |
798 | [ some error condition ] at (eval mmm) line nnn |
799 | |
800 | you will see the slightly more helpful |
801 | |
802 | [ some error condition ] at filename.ph line nnn |
803 | |
804 | However, the B<.ph> files almost double in size when built using B<-h>. |
805 | |
1d3434b8 |
806 | =item -D |
807 | |
808 | Include the code from the B<.h> file as a comment in the B<.ph> file. |
809 | This is primarily used for debugging I<h2ph>. |
810 | |
7f04632d |
811 | =item -Q |
812 | |
813 | ``Quiet'' mode; don't print out the names of the files being converted. |
814 | |
50f6e060 |
815 | =back |
816 | |
1fef88e7 |
817 | =head1 ENVIRONMENT |
818 | |
154e51a4 |
819 | No environment variables are used. |
1fef88e7 |
820 | |
821 | =head1 FILES |
822 | |
823 | /usr/include/*.h |
824 | /usr/include/sys/*.h |
825 | |
154e51a4 |
826 | etc. |
1fef88e7 |
827 | |
828 | =head1 AUTHOR |
829 | |
154e51a4 |
830 | Larry Wall |
1fef88e7 |
831 | |
832 | =head1 SEE ALSO |
833 | |
154e51a4 |
834 | perl(1) |
1fef88e7 |
835 | |
836 | =head1 DIAGNOSTICS |
837 | |
154e51a4 |
838 | The usual warnings if it can't read or write the files involved. |
1fef88e7 |
839 | |
840 | =head1 BUGS |
841 | |
154e51a4 |
842 | Doesn't construct the %sizeof array for you. |
1fef88e7 |
843 | |
154e51a4 |
844 | It doesn't handle all C constructs, but it does attempt to isolate |
845 | definitions inside evals so that you can get at the definitions |
846 | that it can translate. |
1fef88e7 |
847 | |
154e51a4 |
848 | It's only intended as a rough tool. |
849 | You may need to dicker with the files produced. |
1fef88e7 |
850 | |
7f04632d |
851 | You have to run this program by hand; it's not run as part of the Perl |
852 | installation. |
853 | |
854 | Doesn't handle complicated expressions built piecemeal, a la: |
855 | |
856 | enum { |
857 | FIRST_VALUE, |
858 | SECOND_VALUE, |
859 | #ifdef ABC |
860 | THIRD_VALUE |
861 | #endif |
862 | }; |
863 | |
864 | Doesn't necessarily locate all of your C compiler's internally-defined |
865 | symbols. |
866 | |
1fef88e7 |
867 | =cut |
868 | |
154e51a4 |
869 | !NO!SUBS! |
4633a7c4 |
870 | |
871 | close OUT or die "Can't close $file: $!"; |
872 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
873 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |
8a5546a1 |
874 | chdir $origdir; |