Commit | Line | Data |
---|---|---|
4633a7c4 LW |
1 | #!/usr/local/bin/perl |
2 | ||
3 | use Config; | |
ee580363 | 4 | use File::Basename qw(basename dirname); |
8a5546a1 | 5 | use Cwd; |
4633a7c4 LW |
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 $^O eq 'VMS'; |
4633a7c4 LW |
21 | |
22 | open OUT,">$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 $Config{perlpath} -S \$0 \${1+"\$@"}' | |
32 | if \$running_under_some_shell; | |
154e51a4 LW |
33 | !GROK!THIS! |
34 | ||
4633a7c4 LW |
35 | # In the following, perl variables are not expanded during extraction. |
36 | ||
37 | print OUT <<'!NO!SUBS!'; | |
154e51a4 | 38 | |
fc865b05 JH |
39 | use strict; |
40 | ||
2c2acf7e | 41 | use Config; |
b306bf39 | 42 | use File::Path qw(mkpath); |
50f6e060 KS |
43 | use Getopt::Std; |
44 | ||
625ca0ef | 45 | getopts('Dd:rlhaQ'); |
fc865b05 | 46 | use vars qw($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 RS |
50 | my $Exit = 0; |
51 | ||
50f6e060 | 52 | my $Dest_dir = $opt_d || $Config{installsitearch}; |
b306bf39 RS |
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 LW |
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 LW |
62 | END |
63 | ||
fc865b05 | 64 | my %isatype; |
55204971 | 65 | @isatype{@isatype} = (1) x @isatype; |
fc865b05 JH |
66 | my $inif = 0; |
67 | my %Is_converted; | |
fe14fcc3 LW |
68 | |
69 | @ARGV = ('-') unless @ARGV; | |
154e51a4 | 70 | |
7f04632d GS |
71 | build_preamble_if_necessary(); |
72 | ||
fc865b05 JH |
73 | my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile); |
74 | my ($incl, $next); | |
75 | while (defined (my $file = next_file())) { | |
50f6e060 KS |
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 KS |
85 | # $eval_index goes into ``#line'' directives, to help locate syntax errors: |
86 | $eval_index = 1; | |
87 | ||
fe14fcc3 LW |
88 | if ($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 $opt_Q; |
fe14fcc3 LW |
94 | if ($file =~ m|^(.*)/|) { |
95 | $dir = $1; | |
b306bf39 | 96 | mkpath "$Dest_dir/$dir"; |
154e51a4 | 97 | } |
1d3434b8 GS |
98 | |
99 | if ($opt_a) { # automagic mode: locate header file in @inc_dirs | |
100 | foreach (@inc_dirs) { | |
101 | chdir $_; | |
102 | last if -f $file; | |
103 | } | |
104 | } | |
105 | ||
b306bf39 RS |
106 | open(IN,"$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 GS |
109 | |
110 | print OUT "require '_h2ph_pre.ph';\n\n"; | |
79c1b905 | 111 | while (defined (local $_ = next_line())) { |
1d2dff63 | 112 | if (s/^\s*\#\s*//) { |
154e51a4 LW |
113 | if (s/^define\s+(\w+)//) { |
114 | $name = $1; | |
115 | $new = ''; | |
116 | s/\s+$//; | |
117 | if (s/^\(([\w,\s]*)\)//) { | |
118 | $args = $1; | |
b306bf39 | 119 | my $proto = '() '; |
154e51a4 | 120 | if ($args ne '') { |
b306bf39 | 121 | $proto = ''; |
fc865b05 | 122 | foreach my $arg (split(/,\s*/,$args)) { |
55204971 | 123 | $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; |
154e51a4 LW |
124 | $curargs{$arg} = 1; |
125 | } | |
126 | $args =~ s/\b(\w)/\$$1/g; | |
127 | $args = "local($args) = \@_;\n$t "; | |
128 | } | |
129 | s/^\s+//; | |
5f05dabc | 130 | expr(); |
ee580363 GS |
131 | $new =~ s/(["\\])/\\$1/g; #"]); |
132 | $new = reindent($new); | |
133 | $args = reindent($args); | |
154e51a4 | 134 | if ($t ne '') { |
ee580363 | 135 | $new =~ s/(['\\])/\\$1/g; #']); |
50f6e060 KS |
136 | if ($opt_h) { |
137 | print OUT $t, | |
ee580363 | 138 | "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 KS |
139 | $eval_index++; |
140 | } else { | |
141 | print OUT $t, | |
ee580363 | 142 | "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; |
50f6e060 | 143 | } |
ee580363 GS |
144 | } else { |
145 | print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; | |
154e51a4 LW |
146 | } |
147 | %curargs = (); | |
ee580363 | 148 | } else { |
154e51a4 | 149 | s/^\s+//; |
5f05dabc | 150 | expr(); |
154e51a4 | 151 | $new = 1 if $new eq ''; |
ee580363 GS |
152 | $new = reindent($new); |
153 | $args = reindent($args); | |
154e51a4 | 154 | if ($t ne '') { |
ee580363 | 155 | $new =~ s/(['\\])/\\$1/g; #']); |
7f04632d | 156 | |
50f6e060 KS |
157 | if ($opt_h) { |
158 | print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; | |
159 | $eval_index++; | |
160 | } else { | |
161 | print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; | |
162 | } | |
ee580363 | 163 | } else { |
7f04632d GS |
164 | # Shunt around such directives as `#define FOO FOO': |
165 | next if " \&$name" eq $new; | |
166 | ||
ee580363 | 167 | print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; |
154e51a4 LW |
168 | } |
169 | } | |
ee580363 GS |
170 | } elsif (/^(include|import)\s*[<"](.*)[>"]/) { |
171 | ($incl = $2) =~ s/\.h$/.ph/; | |
d9d8d8de | 172 | print OUT $t,"require '$incl';\n"; |
ee580363 GS |
173 | } elsif(/^include_next\s*[<"](.*)[>"]/) { |
174 | ($incl = $1) =~ s/\.h$/.ph/; | |
ee580363 | 175 | print OUT ($t, |
1d2dff63 GS |
176 | "eval {\n"); |
177 | $tab += 4; | |
178 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
179 | print OUT ($t, | |
180 | "my(\%INCD) = map { \$INC{\$_} => 1 } ", | |
181 | "(grep { \$_ eq \"$incl\" } keys(\%INC));\n"); | |
182 | print OUT ($t, | |
183 | "my(\@REM) = map { \"\$_/$incl\" } ", | |
184 | "(grep { not exists(\$INCD{\"\$_/$incl\"})", | |
185 | "and -f \"\$_/$incl\" } \@INC);\n"); | |
186 | print OUT ($t, | |
187 | "require \"\$REM[0]\" if \@REM;\n"); | |
188 | $tab -= 4; | |
189 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
190 | print OUT ($t, | |
191 | "};\n"); | |
192 | print OUT ($t, | |
193 | "warn(\$\@) if \$\@;\n"); | |
ee580363 GS |
194 | } elsif (/^ifdef\s+(\w+)/) { |
195 | print OUT $t,"if(defined(&$1)) {\n"; | |
154e51a4 LW |
196 | $tab += 4; |
197 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 GS |
198 | } elsif (/^ifndef\s+(\w+)/) { |
199 | print OUT $t,"unless(defined(&$1)) {\n"; | |
200 | $tab += 4; | |
201 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
202 | } elsif (s/^if\s+//) { | |
154e51a4 | 203 | $new = ''; |
748a9306 | 204 | $inif = 1; |
5f05dabc | 205 | expr(); |
748a9306 | 206 | $inif = 0; |
ee580363 | 207 | print OUT $t,"if($new) {\n"; |
154e51a4 LW |
208 | $tab += 4; |
209 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 | 210 | } elsif (s/^elif\s+//) { |
154e51a4 | 211 | $new = ''; |
748a9306 | 212 | $inif = 1; |
5f05dabc | 213 | expr(); |
748a9306 | 214 | $inif = 0; |
154e51a4 LW |
215 | $tab -= 4; |
216 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 | 217 | print OUT $t,"}\n elsif($new) {\n"; |
154e51a4 LW |
218 | $tab += 4; |
219 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 | 220 | } elsif (/^else/) { |
154e51a4 LW |
221 | $tab -= 4; |
222 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 | 223 | print OUT $t,"} else {\n"; |
154e51a4 LW |
224 | $tab += 4; |
225 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
ee580363 | 226 | } elsif (/^endif/) { |
154e51a4 LW |
227 | $tab -= 4; |
228 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); | |
229 | print OUT $t,"}\n"; | |
ee580363 GS |
230 | } elsif(/^undef\s+(\w+)/) { |
231 | print OUT $t, "undef(&$1) if defined(&$1);\n"; | |
d3e00f1c KS |
232 | } elsif(/^error\s+(".*")/) { |
233 | print OUT $t, "die($1);\n"; | |
ee580363 | 234 | } elsif(/^error\s+(.*)/) { |
5d42aa7b | 235 | print OUT $t, "die(\"", quotemeta($1), "\");\n"; |
ee580363 | 236 | } elsif(/^warning\s+(.*)/) { |
5d42aa7b | 237 | print OUT $t, "warn(\"", quotemeta($1), "\");\n"; |
ee580363 GS |
238 | } elsif(/^ident\s+(.*)/) { |
239 | print OUT $t, "# $1\n"; | |
154e51a4 | 240 | } |
e7cba2ba JH |
241 | } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { |
242 | until(/\{[^}]*\}.*;/ || /;/) { | |
4e15175a | 243 | last unless defined ($next = next_line()); |
e7cba2ba JH |
244 | chomp $next; |
245 | # drop "#define FOO FOO" in enums | |
246 | $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; | |
1d2dff63 GS |
247 | $_ .= $next; |
248 | print OUT "# $next\n" if $opt_D; | |
249 | } | |
e7cba2ba | 250 | s/#\s*if.*?#\s*endif//g; # drop #ifdefs |
1d2dff63 GS |
251 | s@/\*.*?\*/@@g; |
252 | s/\s+/ /g; | |
e7cba2ba | 253 | next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; |
fc865b05 JH |
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) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; | |
1d2dff63 GS |
259 | $enum_value =~ s/^=//; |
260 | $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); | |
261 | if ($opt_h) { | |
262 | print OUT ($t, | |
263 | "eval(\"\\n#line $eval_index $outfile\\n", | |
264 | "sub $enum_name () \{ $enum_val; \}\") ", | |
265 | "unless defined(\&$enum_name);\n"); | |
266 | ++ $eval_index; | |
267 | } else { | |
268 | print OUT ($t, | |
269 | "eval(\"sub $enum_name () \{ $enum_val; \}\") ", | |
270 | "unless defined(\&$enum_name);\n"); | |
271 | } | |
272 | } | |
154e51a4 LW |
273 | } |
274 | } | |
275 | print OUT "1;\n"; | |
1d3434b8 | 276 | |
fc865b05 | 277 | $Is_converted{$file} = 1; |
1d3434b8 | 278 | queue_includes_from($file) if ($opt_a); |
154e51a4 LW |
279 | } |
280 | ||
b306bf39 RS |
281 | exit $Exit; |
282 | ||
fc865b05 | 283 | |
ee580363 GS |
284 | sub reindent($) { |
285 | my($text) = shift; | |
286 | $text =~ s/\n/\n /g; | |
287 | $text =~ s/ /\t/g; | |
288 | $text; | |
289 | } | |
290 | ||
fc865b05 | 291 | |
154e51a4 | 292 | sub expr { |
fc865b05 | 293 | my $joined_args; |
ee580363 | 294 | if(keys(%curargs)) { |
fc865b05 | 295 | $joined_args = join('|', keys(%curargs)); |
ee580363 | 296 | } |
154e51a4 | 297 | while ($_ ne '') { |
ee580363 GS |
298 | s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator |
299 | s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of | |
154e51a4 | 300 | s/^(\s+)// && do {$new .= ' '; next;}; |
50f6e060 KS |
301 | s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;}; |
302 | s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;}; | |
303 | s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; | |
154e51a4 LW |
304 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; |
305 | s/^'((\\"|[^"])*)'// && do { | |
306 | if ($curargs{$1}) { | |
307 | $new .= "ord('\$$1')"; | |
ee580363 | 308 | } else { |
154e51a4 LW |
309 | $new .= "ord('$1')"; |
310 | } | |
311 | next; | |
312 | }; | |
5f05dabc | 313 | # replace "sizeof(foo)" with "{foo}" |
314 | # also, remove * (C dereference operator) to avoid perl syntax | |
315 | # problems. Where the %sizeof array comes from is anyone's | |
316 | # guess (c2ph?), but this at least avoids fatal syntax errors. | |
317 | # Behavior is undefined if sizeof() delimiters are unbalanced. | |
318 | # This code was modified to able to handle constructs like this: | |
319 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. | |
320 | s/^sizeof\s*\(// && do { | |
321 | $new .= '$sizeof'; | |
322 | my $lvl = 1; # already saw one open paren | |
323 | # tack { on the front, and skip it in the loop | |
324 | $_ = "{" . "$_"; | |
325 | my $index = 1; | |
326 | # find balanced closing paren | |
327 | while ($index <= length($_) && $lvl > 0) { | |
328 | $lvl++ if substr($_, $index, 1) eq "("; | |
329 | $lvl-- if substr($_, $index, 1) eq ")"; | |
330 | $index++; | |
331 | } | |
332 | # tack } on the end, replacing ) | |
333 | substr($_, $index - 1, 1) = "}"; | |
334 | # remove pesky * operators within the sizeof argument | |
335 | substr($_, 0, $index - 1) =~ s/\*//g; | |
336 | next; | |
337 | }; | |
50f6e060 KS |
338 | # Eliminate typedefs |
339 | /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { | |
340 | foreach (split /\s+/, $1) { # Make sure all the words are types, | |
99ed927b | 341 | last unless ($isatype{$_} or $_ eq 'struct' or $_ eq 'union'); |
50f6e060 KS |
342 | } |
343 | s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. | |
344 | }; | |
ee580363 GS |
345 | # struct/union member, including arrays: |
346 | s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { | |
fc865b05 | 347 | my $id = $1; |
ee580363 GS |
348 | $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; |
349 | $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); | |
350 | while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { | |
351 | my($index) = $1; | |
352 | $index =~ s/\s//g; | |
353 | if(exists($curargs{$index})) { | |
354 | $index = "\$$index"; | |
355 | } else { | |
356 | $index = "&$index"; | |
357 | } | |
358 | $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; | |
359 | } | |
360 | $new .= " (\$$id)"; | |
50f6e060 | 361 | }; |
154e51a4 | 362 | s/^([_a-zA-Z]\w*)// && do { |
fc865b05 | 363 | my $id = $1; |
99ed927b | 364 | if ($id eq 'struct' || $id eq 'union') { |
fe14fcc3 LW |
365 | s/^\s+(\w+)//; |
366 | $id .= ' ' . $1; | |
367 | $isatype{$id} = 1; | |
ee580363 | 368 | } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { |
50f6e060 | 369 | while (s/^\s+(\w+)//) { $id .= ' ' . $1; } |
fe14fcc3 LW |
370 | $isatype{$id} = 1; |
371 | } | |
154e51a4 | 372 | if ($curargs{$id}) { |
ee580363 GS |
373 | $new .= "\$$id"; |
374 | $new .= '->' if /^[\[\{]/; | |
375 | } elsif ($id eq 'defined') { | |
154e51a4 | 376 | $new .= 'defined'; |
cd4e1efa MS |
377 | } elsif (/^\s*\(/) { |
378 | s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat | |
154e51a4 | 379 | $new .= " &$id"; |
ee580363 | 380 | } elsif ($isatype{$id}) { |
fe14fcc3 LW |
381 | if ($new =~ /{\s*$/) { |
382 | $new .= "'$id'"; | |
ee580363 | 383 | } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { |
fe14fcc3 LW |
384 | $new =~ s/\(\s*$//; |
385 | s/^[\s*]*\)//; | |
ee580363 | 386 | } else { |
b276c83d | 387 | $new .= q(').$id.q('); |
fe14fcc3 | 388 | } |
ee580363 | 389 | } else { |
c07a80fd | 390 | if ($inif && $new !~ /defined\s*\($/) { |
748a9306 | 391 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; |
ee580363 GS |
392 | } elsif (/^\[/) { |
393 | $new .= " \$$id"; | |
394 | } else { | |
748a9306 LW |
395 | $new .= ' &' . $id; |
396 | } | |
154e51a4 LW |
397 | } |
398 | next; | |
399 | }; | |
fb21d8eb | 400 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; |
154e51a4 LW |
401 | } |
402 | } | |
50f6e060 KS |
403 | |
404 | ||
79c1b905 KS |
405 | sub next_line |
406 | { | |
407 | my ($in, $out); | |
b7bcf494 | 408 | my $pre_sub_tri_graphs = 1; |
79c1b905 KS |
409 | |
410 | READ: while (not eof IN) { | |
411 | $in .= <IN>; | |
412 | chomp $in; | |
413 | next unless length $in; | |
414 | ||
415 | while (length $in) { | |
b7bcf494 PP |
416 | if ($pre_sub_tri_graphs) { |
417 | # Preprocess all tri-graphs | |
418 | # including things stuck in quoted string constants. | |
419 | $in =~ s/\?\?=/#/g; # | ??=| #| | |
420 | $in =~ s/\?\?\!/|/g; # | ??!| || | |
421 | $in =~ s/\?\?'/^/g; # | ??'| ^| | |
422 | $in =~ s/\?\?\(/[/g; # | ??(| [| | |
423 | $in =~ s/\?\?\)/]/g; # | ??)| ]| | |
424 | $in =~ s/\?\?\-/~/g; # | ??-| ~| | |
425 | $in =~ s/\?\?\//\\/g; # | ??/| \| | |
426 | $in =~ s/\?\?</{/g; # | ??<| {| | |
427 | $in =~ s/\?\?>/}/g; # | ??>| }| | |
428 | } | |
79c1b905 KS |
429 | if ($in =~ s/\\$//) { # \-newline |
430 | $out .= ' '; | |
431 | next READ; | |
432 | } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough | |
433 | $out .= $1; | |
434 | } elsif ($in =~ s/^(\\.)//) { # \... | |
435 | $out .= $1; | |
436 | } elsif ($in =~ s/^('(\\.|[^'\\])*')//) { # '... | |
437 | $out .= $1; | |
438 | } elsif ($in =~ s/^("(\\.|[^"\\])*")//) { # "... | |
439 | $out .= $1; | |
440 | } elsif ($in =~ s/^\/\/.*//) { # //... | |
edf6e4ec | 441 | # fall through |
79c1b905 KS |
442 | } elsif ($in =~ m/^\/\*/) { # /*... |
443 | # C comment removal adapted from perlfaq6: | |
444 | if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { | |
445 | $out .= ' '; | |
446 | } else { # Incomplete /* */ | |
447 | next READ; | |
448 | } | |
449 | } elsif ($in =~ s/^(\/)//) { # /... | |
450 | $out .= $1; | |
451 | } elsif ($in =~ s/^([^\'\"\\\/]+)//) { | |
452 | $out .= $1; | |
453 | } else { | |
454 | die "Cannot parse:\n$in\n"; | |
455 | } | |
456 | } | |
457 | ||
edf6e4ec | 458 | last READ if $out =~ /\S/; |
79c1b905 KS |
459 | } |
460 | ||
461 | return $out; | |
462 | } | |
463 | ||
464 | ||
50f6e060 KS |
465 | # Handle recursive subdirectories without getting a grotesquely big stack. |
466 | # Could this be implemented using File::Find? | |
467 | sub next_file | |
468 | { | |
469 | my $file; | |
470 | ||
471 | while (@ARGV) { | |
472 | $file = shift @ARGV; | |
473 | ||
474 | if ($file eq '-' or -f $file or -l $file) { | |
475 | return $file; | |
476 | } elsif (-d $file) { | |
477 | if ($opt_r) { | |
478 | expand_glob($file); | |
479 | } else { | |
480 | print STDERR "Skipping directory `$file'\n"; | |
481 | } | |
1d3434b8 GS |
482 | } elsif ($opt_a) { |
483 | return $file; | |
484 | } else { | |
50f6e060 KS |
485 | print STDERR "Skipping `$file': not a file or directory\n"; |
486 | } | |
487 | } | |
488 | ||
489 | return undef; | |
490 | } | |
491 | ||
492 | ||
493 | # Put all the files in $directory into @ARGV for processing. | |
494 | sub expand_glob | |
495 | { | |
496 | my ($directory) = @_; | |
497 | ||
498 | $directory =~ s:/$::; | |
499 | ||
500 | opendir DIR, $directory; | |
501 | foreach (readdir DIR) { | |
502 | next if ($_ eq '.' or $_ eq '..'); | |
503 | ||
504 | # expand_glob() is going to be called until $ARGV[0] isn't a | |
505 | # directory; so push directories, and unshift everything else. | |
1d3434b8 GS |
506 | if (-d "$directory/$_") { push @ARGV, "$directory/$_" } |
507 | else { unshift @ARGV, "$directory/$_" } | |
50f6e060 KS |
508 | } |
509 | closedir DIR; | |
510 | } | |
511 | ||
512 | ||
513 | # Given $file, a symbolic link to a directory in the C include directory, | |
514 | # make an equivalent symbolic link in $Dest_dir, if we can figure out how. | |
515 | # Otherwise, just duplicate the file or directory. | |
516 | sub link_if_possible | |
517 | { | |
518 | my ($dirlink) = @_; | |
519 | my $target = eval 'readlink($dirlink)'; | |
520 | ||
521 | if ($target =~ m:^\.\./: or $target =~ m:^/:) { | |
522 | # The target of a parent or absolute link could leave the $Dest_dir | |
523 | # hierarchy, so let's put all of the contents of $dirlink (actually, | |
524 | # the contents of $target) into @ARGV; as a side effect down the | |
525 | # line, $dirlink will get created as an _actual_ directory. | |
526 | expand_glob($dirlink); | |
527 | } else { | |
528 | if (-l "$Dest_dir/$dirlink") { | |
529 | unlink "$Dest_dir/$dirlink" or | |
530 | print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; | |
531 | } | |
1d3434b8 | 532 | |
50f6e060 KS |
533 | if (eval 'symlink($target, "$Dest_dir/$dirlink")') { |
534 | print "Linking $target -> $Dest_dir/$dirlink\n"; | |
535 | ||
536 | # Make sure that the link _links_ to something: | |
537 | if (! -e "$Dest_dir/$target") { | |
1d3434b8 | 538 | mkpath("$Dest_dir/$target", 0755) or |
50f6e060 KS |
539 | print STDERR "Could not create $Dest_dir/$target/\n"; |
540 | } | |
541 | } else { | |
542 | print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; | |
543 | } | |
544 | } | |
545 | } | |
546 | ||
547 | ||
1d3434b8 GS |
548 | # Push all #included files in $file onto our stack, except for STDIN |
549 | # and files we've already processed. | |
550 | sub queue_includes_from | |
551 | { | |
552 | my ($file) = @_; | |
553 | my $line; | |
554 | ||
555 | return if ($file eq "-"); | |
556 | ||
557 | open HEADER, $file or return; | |
558 | while (defined($line = <HEADER>)) { | |
559 | while (/\\$/) { # Handle continuation lines | |
560 | chop $line; | |
561 | $line .= <HEADER>; | |
562 | } | |
563 | ||
564 | if ($line =~ /^#\s*include\s+<(.*?)>/) { | |
fc865b05 | 565 | push(@ARGV, $1) unless $Is_converted{$1}; |
1d3434b8 GS |
566 | } |
567 | } | |
568 | close HEADER; | |
569 | } | |
570 | ||
571 | ||
572 | # Determine include directories; $Config{usrinc} should be enough for (all | |
573 | # non-GCC?) C compilers, but gcc uses an additional include directory. | |
574 | sub inc_dirs | |
575 | { | |
576 | my $from_gcc = `$Config{cc} -v 2>&1`; | |
577 | $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s; | |
578 | ||
579 | length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); | |
580 | } | |
581 | ||
582 | ||
7f04632d GS |
583 | # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different |
584 | # version of h2ph. | |
585 | sub build_preamble_if_necessary | |
586 | { | |
587 | # Increment $VERSION every time this function is modified: | |
00f0ad8c | 588 | my $VERSION = 2; |
7f04632d GS |
589 | my $preamble = "$Dest_dir/_h2ph_pre.ph"; |
590 | ||
591 | # Can we skip building the preamble file? | |
592 | if (-r $preamble) { | |
593 | # Extract version number from first line of preamble: | |
594 | open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; | |
595 | my $line = <PREAMBLE>; | |
596 | $line =~ /(\b\d+\b)/; | |
597 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
598 | ||
599 | # Don't build preamble if a compatible preamble exists: | |
600 | return if $1 == $VERSION; | |
601 | } | |
602 | ||
603 | my (%define) = _extract_cc_defines(); | |
604 | ||
605 | open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; | |
606 | print PREAMBLE "# This file was created by h2ph version $VERSION\n"; | |
607 | ||
608 | foreach (sort keys %define) { | |
609 | if ($opt_D) { | |
610 | print PREAMBLE "# $_=$define{$_}\n"; | |
611 | } | |
612 | ||
4322f456 | 613 | if ($define{$_} =~ /^(\d+)U?L{0,2}$/i) { |
7f04632d | 614 | print PREAMBLE |
4322f456 | 615 | "unless (defined &$_) { sub $_() { $1 } }\n\n"; |
00f0ad8c KS |
616 | } elsif ($define{$_} =~ /^\w+$/) { |
617 | print PREAMBLE | |
618 | "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; | |
7f04632d GS |
619 | } else { |
620 | print PREAMBLE | |
621 | "unless (defined &$_) { sub $_() { \"", | |
622 | quotemeta($define{$_}), "\" } }\n\n"; | |
623 | } | |
624 | } | |
625 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
626 | } | |
627 | ||
628 | ||
629 | # %Config contains information on macros that are pre-defined by the | |
630 | # system's compiler. We need this information to make the .ph files | |
631 | # function with perl as the .h files do with cc. | |
632 | sub _extract_cc_defines | |
633 | { | |
634 | my %define; | |
fc865b05 JH |
635 | my $allsymbols = join " ", |
636 | @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; | |
7f04632d GS |
637 | |
638 | # Split compiler pre-definitions into `key=value' pairs: | |
639 | foreach (split /\s+/, $allsymbols) { | |
00f0ad8c | 640 | /(.+?)=(.+)/ and $define{$1} = $2; |
7f04632d GS |
641 | |
642 | if ($opt_D) { | |
643 | print STDERR "$_: $1 -> $2\n"; | |
644 | } | |
645 | } | |
646 | ||
647 | return %define; | |
648 | } | |
649 | ||
650 | ||
50f6e060 KS |
651 | 1; |
652 | ||
154e51a4 | 653 | ############################################################################## |
1fef88e7 JM |
654 | __END__ |
655 | ||
656 | =head1 NAME | |
657 | ||
658 | h2ph - convert .h C header files to .ph Perl header files | |
659 | ||
660 | =head1 SYNOPSIS | |
661 | ||
1d3434b8 | 662 | B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> |
1fef88e7 JM |
663 | |
664 | =head1 DESCRIPTION | |
154e51a4 | 665 | |
1fef88e7 | 666 | I<h2ph> |
154e51a4 LW |
667 | converts any C header files specified to the corresponding Perl header file |
668 | format. | |
669 | It is most easily run while in /usr/include: | |
154e51a4 LW |
670 | |
671 | cd /usr/include; h2ph * sys/* | |
672 | ||
50f6e060 KS |
673 | or |
674 | ||
675 | cd /usr/include; h2ph -r -l . | |
676 | ||
b306bf39 RS |
677 | The output files are placed in the hierarchy rooted at Perl's |
678 | architecture dependent library directory. You can specify a different | |
679 | hierarchy with a B<-d> switch. | |
680 | ||
fe14fcc3 | 681 | If run with no arguments, filters standard input to standard output. |
1fef88e7 | 682 | |
50f6e060 KS |
683 | =head1 OPTIONS |
684 | ||
685 | =over 4 | |
686 | ||
687 | =item -d destination_dir | |
688 | ||
689 | Put the resulting B<.ph> files beneath B<destination_dir>, instead of | |
690 | beneath the default Perl library location (C<$Config{'installsitsearch'}>). | |
691 | ||
692 | =item -r | |
693 | ||
694 | Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> | |
1d3434b8 GS |
695 | on all files in those directories (and their subdirectories, etc.). B<-r> |
696 | and B<-a> are mutually exclusive. | |
697 | ||
698 | =item -a | |
699 | ||
700 | Run automagically; convert B<headerfiles>, as well as any B<.h> files | |
701 | which they include. This option will search for B<.h> files in all | |
702 | directories which your C compiler ordinarily uses. B<-a> and B<-r> are | |
703 | mutually exclusive. | |
50f6e060 KS |
704 | |
705 | =item -l | |
706 | ||
707 | Symbolic links will be replicated in the destination directory. If B<-l> | |
708 | is not specified, then links are skipped over. | |
709 | ||
710 | =item -h | |
711 | ||
712 | Put ``hints'' in the .ph files which will help in locating problems with | |
713 | I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax | |
714 | errors, instead of the cryptic | |
715 | ||
716 | [ some error condition ] at (eval mmm) line nnn | |
717 | ||
718 | you will see the slightly more helpful | |
719 | ||
720 | [ some error condition ] at filename.ph line nnn | |
721 | ||
722 | However, the B<.ph> files almost double in size when built using B<-h>. | |
723 | ||
1d3434b8 GS |
724 | =item -D |
725 | ||
726 | Include the code from the B<.h> file as a comment in the B<.ph> file. | |
727 | This is primarily used for debugging I<h2ph>. | |
728 | ||
7f04632d GS |
729 | =item -Q |
730 | ||
731 | ``Quiet'' mode; don't print out the names of the files being converted. | |
732 | ||
50f6e060 KS |
733 | =back |
734 | ||
1fef88e7 JM |
735 | =head1 ENVIRONMENT |
736 | ||
154e51a4 | 737 | No environment variables are used. |
1fef88e7 JM |
738 | |
739 | =head1 FILES | |
740 | ||
741 | /usr/include/*.h | |
742 | /usr/include/sys/*.h | |
743 | ||
154e51a4 | 744 | etc. |
1fef88e7 JM |
745 | |
746 | =head1 AUTHOR | |
747 | ||
154e51a4 | 748 | Larry Wall |
1fef88e7 JM |
749 | |
750 | =head1 SEE ALSO | |
751 | ||
154e51a4 | 752 | perl(1) |
1fef88e7 JM |
753 | |
754 | =head1 DIAGNOSTICS | |
755 | ||
154e51a4 | 756 | The usual warnings if it can't read or write the files involved. |
1fef88e7 JM |
757 | |
758 | =head1 BUGS | |
759 | ||
154e51a4 | 760 | Doesn't construct the %sizeof array for you. |
1fef88e7 | 761 | |
154e51a4 LW |
762 | It doesn't handle all C constructs, but it does attempt to isolate |
763 | definitions inside evals so that you can get at the definitions | |
764 | that it can translate. | |
1fef88e7 | 765 | |
154e51a4 LW |
766 | It's only intended as a rough tool. |
767 | You may need to dicker with the files produced. | |
1fef88e7 | 768 | |
7f04632d GS |
769 | You have to run this program by hand; it's not run as part of the Perl |
770 | installation. | |
771 | ||
772 | Doesn't handle complicated expressions built piecemeal, a la: | |
773 | ||
774 | enum { | |
775 | FIRST_VALUE, | |
776 | SECOND_VALUE, | |
777 | #ifdef ABC | |
778 | THIRD_VALUE | |
779 | #endif | |
780 | }; | |
781 | ||
782 | Doesn't necessarily locate all of your C compiler's internally-defined | |
783 | symbols. | |
784 | ||
1fef88e7 JM |
785 | =cut |
786 | ||
154e51a4 | 787 | !NO!SUBS! |
4633a7c4 LW |
788 | |
789 | close OUT or die "Can't close $file: $!"; | |
790 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; | |
791 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; | |
8a5546a1 | 792 | chdir $origdir; |