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, "# $1\n"; | |
154e51a4 | 240 | } |
625ca0ef | 241 | } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?\{/) { |
1d2dff63 GS |
242 | until(/\}.*?;/) { |
243 | chomp($next = <IN>); | |
244 | $_ .= $next; | |
245 | print OUT "# $next\n" if $opt_D; | |
246 | } | |
247 | s@/\*.*?\*/@@g; | |
248 | s/\s+/ /g; | |
249 | /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; | |
fc865b05 JH |
250 | (my $enum_subs = $3) =~ s/\s//g; |
251 | my @enum_subs = split(/,/, $enum_subs); | |
252 | my $enum_val = -1; | |
253 | foreach my $enum (@enum_subs) { | |
254 | my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; | |
1d2dff63 GS |
255 | $enum_value =~ s/^=//; |
256 | $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); | |
257 | if ($opt_h) { | |
258 | print OUT ($t, | |
259 | "eval(\"\\n#line $eval_index $outfile\\n", | |
260 | "sub $enum_name () \{ $enum_val; \}\") ", | |
261 | "unless defined(\&$enum_name);\n"); | |
262 | ++ $eval_index; | |
263 | } else { | |
264 | print OUT ($t, | |
265 | "eval(\"sub $enum_name () \{ $enum_val; \}\") ", | |
266 | "unless defined(\&$enum_name);\n"); | |
267 | } | |
268 | } | |
154e51a4 LW |
269 | } |
270 | } | |
271 | print OUT "1;\n"; | |
1d3434b8 | 272 | |
fc865b05 | 273 | $Is_converted{$file} = 1; |
1d3434b8 | 274 | queue_includes_from($file) if ($opt_a); |
154e51a4 LW |
275 | } |
276 | ||
b306bf39 RS |
277 | exit $Exit; |
278 | ||
fc865b05 | 279 | |
ee580363 GS |
280 | sub reindent($) { |
281 | my($text) = shift; | |
282 | $text =~ s/\n/\n /g; | |
283 | $text =~ s/ /\t/g; | |
284 | $text; | |
285 | } | |
286 | ||
fc865b05 | 287 | |
154e51a4 | 288 | sub expr { |
fc865b05 | 289 | my $joined_args; |
ee580363 | 290 | if(keys(%curargs)) { |
fc865b05 | 291 | $joined_args = join('|', keys(%curargs)); |
ee580363 | 292 | } |
154e51a4 | 293 | while ($_ ne '') { |
ee580363 GS |
294 | s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator |
295 | s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of | |
154e51a4 | 296 | s/^(\s+)// && do {$new .= ' '; next;}; |
50f6e060 KS |
297 | s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;}; |
298 | s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;}; | |
299 | s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; | |
154e51a4 LW |
300 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; |
301 | s/^'((\\"|[^"])*)'// && do { | |
302 | if ($curargs{$1}) { | |
303 | $new .= "ord('\$$1')"; | |
ee580363 | 304 | } else { |
154e51a4 LW |
305 | $new .= "ord('$1')"; |
306 | } | |
307 | next; | |
308 | }; | |
5f05dabc | 309 | # replace "sizeof(foo)" with "{foo}" |
310 | # also, remove * (C dereference operator) to avoid perl syntax | |
311 | # problems. Where the %sizeof array comes from is anyone's | |
312 | # guess (c2ph?), but this at least avoids fatal syntax errors. | |
313 | # Behavior is undefined if sizeof() delimiters are unbalanced. | |
314 | # This code was modified to able to handle constructs like this: | |
315 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. | |
316 | s/^sizeof\s*\(// && do { | |
317 | $new .= '$sizeof'; | |
318 | my $lvl = 1; # already saw one open paren | |
319 | # tack { on the front, and skip it in the loop | |
320 | $_ = "{" . "$_"; | |
321 | my $index = 1; | |
322 | # find balanced closing paren | |
323 | while ($index <= length($_) && $lvl > 0) { | |
324 | $lvl++ if substr($_, $index, 1) eq "("; | |
325 | $lvl-- if substr($_, $index, 1) eq ")"; | |
326 | $index++; | |
327 | } | |
328 | # tack } on the end, replacing ) | |
329 | substr($_, $index - 1, 1) = "}"; | |
330 | # remove pesky * operators within the sizeof argument | |
331 | substr($_, 0, $index - 1) =~ s/\*//g; | |
332 | next; | |
333 | }; | |
50f6e060 KS |
334 | # Eliminate typedefs |
335 | /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { | |
336 | foreach (split /\s+/, $1) { # Make sure all the words are types, | |
337 | last unless ($isatype{$_} or $_ eq 'struct'); | |
338 | } | |
339 | s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. | |
340 | }; | |
ee580363 GS |
341 | # struct/union member, including arrays: |
342 | s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { | |
fc865b05 | 343 | my $id = $1; |
ee580363 GS |
344 | $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; |
345 | $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); | |
346 | while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { | |
347 | my($index) = $1; | |
348 | $index =~ s/\s//g; | |
349 | if(exists($curargs{$index})) { | |
350 | $index = "\$$index"; | |
351 | } else { | |
352 | $index = "&$index"; | |
353 | } | |
354 | $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; | |
355 | } | |
356 | $new .= " (\$$id)"; | |
50f6e060 | 357 | }; |
154e51a4 | 358 | s/^([_a-zA-Z]\w*)// && do { |
fc865b05 | 359 | my $id = $1; |
fe14fcc3 LW |
360 | if ($id eq 'struct') { |
361 | s/^\s+(\w+)//; | |
362 | $id .= ' ' . $1; | |
363 | $isatype{$id} = 1; | |
ee580363 | 364 | } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { |
50f6e060 | 365 | while (s/^\s+(\w+)//) { $id .= ' ' . $1; } |
fe14fcc3 LW |
366 | $isatype{$id} = 1; |
367 | } | |
154e51a4 | 368 | if ($curargs{$id}) { |
ee580363 GS |
369 | $new .= "\$$id"; |
370 | $new .= '->' if /^[\[\{]/; | |
371 | } elsif ($id eq 'defined') { | |
154e51a4 | 372 | $new .= 'defined'; |
cd4e1efa MS |
373 | } elsif (/^\s*\(/) { |
374 | s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat | |
154e51a4 | 375 | $new .= " &$id"; |
ee580363 | 376 | } elsif ($isatype{$id}) { |
fe14fcc3 LW |
377 | if ($new =~ /{\s*$/) { |
378 | $new .= "'$id'"; | |
ee580363 | 379 | } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { |
fe14fcc3 LW |
380 | $new =~ s/\(\s*$//; |
381 | s/^[\s*]*\)//; | |
ee580363 | 382 | } else { |
b276c83d | 383 | $new .= q(').$id.q('); |
fe14fcc3 | 384 | } |
ee580363 | 385 | } else { |
c07a80fd | 386 | if ($inif && $new !~ /defined\s*\($/) { |
748a9306 | 387 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; |
ee580363 GS |
388 | } elsif (/^\[/) { |
389 | $new .= " \$$id"; | |
390 | } else { | |
748a9306 LW |
391 | $new .= ' &' . $id; |
392 | } | |
154e51a4 LW |
393 | } |
394 | next; | |
395 | }; | |
fb21d8eb | 396 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; |
154e51a4 LW |
397 | } |
398 | } | |
50f6e060 KS |
399 | |
400 | ||
79c1b905 KS |
401 | sub next_line |
402 | { | |
403 | my ($in, $out); | |
404 | ||
405 | READ: while (not eof IN) { | |
406 | $in .= <IN>; | |
407 | chomp $in; | |
408 | next unless length $in; | |
409 | ||
410 | while (length $in) { | |
411 | if ($in =~ s/\\$//) { # \-newline | |
412 | $out .= ' '; | |
413 | next READ; | |
414 | } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough | |
415 | $out .= $1; | |
416 | } elsif ($in =~ s/^(\\.)//) { # \... | |
417 | $out .= $1; | |
418 | } elsif ($in =~ s/^('(\\.|[^'\\])*')//) { # '... | |
419 | $out .= $1; | |
420 | } elsif ($in =~ s/^("(\\.|[^"\\])*")//) { # "... | |
421 | $out .= $1; | |
422 | } elsif ($in =~ s/^\/\/.*//) { # //... | |
423 | last READ; | |
424 | } elsif ($in =~ m/^\/\*/) { # /*... | |
425 | # C comment removal adapted from perlfaq6: | |
426 | if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { | |
427 | $out .= ' '; | |
428 | } else { # Incomplete /* */ | |
429 | next READ; | |
430 | } | |
431 | } elsif ($in =~ s/^(\/)//) { # /... | |
432 | $out .= $1; | |
433 | } elsif ($in =~ s/^([^\'\"\\\/]+)//) { | |
434 | $out .= $1; | |
435 | } else { | |
436 | die "Cannot parse:\n$in\n"; | |
437 | } | |
438 | } | |
439 | ||
440 | last READ; | |
441 | } | |
442 | ||
443 | return $out; | |
444 | } | |
445 | ||
446 | ||
50f6e060 KS |
447 | # Handle recursive subdirectories without getting a grotesquely big stack. |
448 | # Could this be implemented using File::Find? | |
449 | sub next_file | |
450 | { | |
451 | my $file; | |
452 | ||
453 | while (@ARGV) { | |
454 | $file = shift @ARGV; | |
455 | ||
456 | if ($file eq '-' or -f $file or -l $file) { | |
457 | return $file; | |
458 | } elsif (-d $file) { | |
459 | if ($opt_r) { | |
460 | expand_glob($file); | |
461 | } else { | |
462 | print STDERR "Skipping directory `$file'\n"; | |
463 | } | |
1d3434b8 GS |
464 | } elsif ($opt_a) { |
465 | return $file; | |
466 | } else { | |
50f6e060 KS |
467 | print STDERR "Skipping `$file': not a file or directory\n"; |
468 | } | |
469 | } | |
470 | ||
471 | return undef; | |
472 | } | |
473 | ||
474 | ||
475 | # Put all the files in $directory into @ARGV for processing. | |
476 | sub expand_glob | |
477 | { | |
478 | my ($directory) = @_; | |
479 | ||
480 | $directory =~ s:/$::; | |
481 | ||
482 | opendir DIR, $directory; | |
483 | foreach (readdir DIR) { | |
484 | next if ($_ eq '.' or $_ eq '..'); | |
485 | ||
486 | # expand_glob() is going to be called until $ARGV[0] isn't a | |
487 | # directory; so push directories, and unshift everything else. | |
1d3434b8 GS |
488 | if (-d "$directory/$_") { push @ARGV, "$directory/$_" } |
489 | else { unshift @ARGV, "$directory/$_" } | |
50f6e060 KS |
490 | } |
491 | closedir DIR; | |
492 | } | |
493 | ||
494 | ||
495 | # Given $file, a symbolic link to a directory in the C include directory, | |
496 | # make an equivalent symbolic link in $Dest_dir, if we can figure out how. | |
497 | # Otherwise, just duplicate the file or directory. | |
498 | sub link_if_possible | |
499 | { | |
500 | my ($dirlink) = @_; | |
501 | my $target = eval 'readlink($dirlink)'; | |
502 | ||
503 | if ($target =~ m:^\.\./: or $target =~ m:^/:) { | |
504 | # The target of a parent or absolute link could leave the $Dest_dir | |
505 | # hierarchy, so let's put all of the contents of $dirlink (actually, | |
506 | # the contents of $target) into @ARGV; as a side effect down the | |
507 | # line, $dirlink will get created as an _actual_ directory. | |
508 | expand_glob($dirlink); | |
509 | } else { | |
510 | if (-l "$Dest_dir/$dirlink") { | |
511 | unlink "$Dest_dir/$dirlink" or | |
512 | print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; | |
513 | } | |
1d3434b8 | 514 | |
50f6e060 KS |
515 | if (eval 'symlink($target, "$Dest_dir/$dirlink")') { |
516 | print "Linking $target -> $Dest_dir/$dirlink\n"; | |
517 | ||
518 | # Make sure that the link _links_ to something: | |
519 | if (! -e "$Dest_dir/$target") { | |
1d3434b8 | 520 | mkpath("$Dest_dir/$target", 0755) or |
50f6e060 KS |
521 | print STDERR "Could not create $Dest_dir/$target/\n"; |
522 | } | |
523 | } else { | |
524 | print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n"; | |
525 | } | |
526 | } | |
527 | } | |
528 | ||
529 | ||
1d3434b8 GS |
530 | # Push all #included files in $file onto our stack, except for STDIN |
531 | # and files we've already processed. | |
532 | sub queue_includes_from | |
533 | { | |
534 | my ($file) = @_; | |
535 | my $line; | |
536 | ||
537 | return if ($file eq "-"); | |
538 | ||
539 | open HEADER, $file or return; | |
540 | while (defined($line = <HEADER>)) { | |
541 | while (/\\$/) { # Handle continuation lines | |
542 | chop $line; | |
543 | $line .= <HEADER>; | |
544 | } | |
545 | ||
546 | if ($line =~ /^#\s*include\s+<(.*?)>/) { | |
fc865b05 | 547 | push(@ARGV, $1) unless $Is_converted{$1}; |
1d3434b8 GS |
548 | } |
549 | } | |
550 | close HEADER; | |
551 | } | |
552 | ||
553 | ||
554 | # Determine include directories; $Config{usrinc} should be enough for (all | |
555 | # non-GCC?) C compilers, but gcc uses an additional include directory. | |
556 | sub inc_dirs | |
557 | { | |
558 | my $from_gcc = `$Config{cc} -v 2>&1`; | |
559 | $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s; | |
560 | ||
561 | length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); | |
562 | } | |
563 | ||
564 | ||
7f04632d GS |
565 | # Create "_h2ph_pre.ph", if it doesn't exist or was built by a different |
566 | # version of h2ph. | |
567 | sub build_preamble_if_necessary | |
568 | { | |
569 | # Increment $VERSION every time this function is modified: | |
00f0ad8c | 570 | my $VERSION = 2; |
7f04632d GS |
571 | my $preamble = "$Dest_dir/_h2ph_pre.ph"; |
572 | ||
573 | # Can we skip building the preamble file? | |
574 | if (-r $preamble) { | |
575 | # Extract version number from first line of preamble: | |
576 | open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; | |
577 | my $line = <PREAMBLE>; | |
578 | $line =~ /(\b\d+\b)/; | |
579 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
580 | ||
581 | # Don't build preamble if a compatible preamble exists: | |
582 | return if $1 == $VERSION; | |
583 | } | |
584 | ||
585 | my (%define) = _extract_cc_defines(); | |
586 | ||
587 | open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; | |
588 | print PREAMBLE "# This file was created by h2ph version $VERSION\n"; | |
589 | ||
590 | foreach (sort keys %define) { | |
591 | if ($opt_D) { | |
592 | print PREAMBLE "# $_=$define{$_}\n"; | |
593 | } | |
594 | ||
595 | if ($define{$_} =~ /^\d+$/) { | |
596 | print PREAMBLE | |
597 | "unless (defined &$_) { sub $_() { $define{$_} } }\n\n"; | |
00f0ad8c KS |
598 | } elsif ($define{$_} =~ /^\w+$/) { |
599 | print PREAMBLE | |
600 | "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; | |
7f04632d GS |
601 | } else { |
602 | print PREAMBLE | |
603 | "unless (defined &$_) { sub $_() { \"", | |
604 | quotemeta($define{$_}), "\" } }\n\n"; | |
605 | } | |
606 | } | |
607 | close PREAMBLE or die "Cannot close $preamble: $!"; | |
608 | } | |
609 | ||
610 | ||
611 | # %Config contains information on macros that are pre-defined by the | |
612 | # system's compiler. We need this information to make the .ph files | |
613 | # function with perl as the .h files do with cc. | |
614 | sub _extract_cc_defines | |
615 | { | |
616 | my %define; | |
fc865b05 JH |
617 | my $allsymbols = join " ", |
618 | @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; | |
7f04632d GS |
619 | |
620 | # Split compiler pre-definitions into `key=value' pairs: | |
621 | foreach (split /\s+/, $allsymbols) { | |
00f0ad8c | 622 | /(.+?)=(.+)/ and $define{$1} = $2; |
7f04632d GS |
623 | |
624 | if ($opt_D) { | |
625 | print STDERR "$_: $1 -> $2\n"; | |
626 | } | |
627 | } | |
628 | ||
629 | return %define; | |
630 | } | |
631 | ||
632 | ||
50f6e060 KS |
633 | 1; |
634 | ||
154e51a4 | 635 | ############################################################################## |
1fef88e7 JM |
636 | __END__ |
637 | ||
638 | =head1 NAME | |
639 | ||
640 | h2ph - convert .h C header files to .ph Perl header files | |
641 | ||
642 | =head1 SYNOPSIS | |
643 | ||
1d3434b8 | 644 | B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]> |
1fef88e7 JM |
645 | |
646 | =head1 DESCRIPTION | |
154e51a4 | 647 | |
1fef88e7 | 648 | I<h2ph> |
154e51a4 LW |
649 | converts any C header files specified to the corresponding Perl header file |
650 | format. | |
651 | It is most easily run while in /usr/include: | |
154e51a4 LW |
652 | |
653 | cd /usr/include; h2ph * sys/* | |
654 | ||
50f6e060 KS |
655 | or |
656 | ||
657 | cd /usr/include; h2ph -r -l . | |
658 | ||
b306bf39 RS |
659 | The output files are placed in the hierarchy rooted at Perl's |
660 | architecture dependent library directory. You can specify a different | |
661 | hierarchy with a B<-d> switch. | |
662 | ||
fe14fcc3 | 663 | If run with no arguments, filters standard input to standard output. |
1fef88e7 | 664 | |
50f6e060 KS |
665 | =head1 OPTIONS |
666 | ||
667 | =over 4 | |
668 | ||
669 | =item -d destination_dir | |
670 | ||
671 | Put the resulting B<.ph> files beneath B<destination_dir>, instead of | |
672 | beneath the default Perl library location (C<$Config{'installsitsearch'}>). | |
673 | ||
674 | =item -r | |
675 | ||
676 | Run recursively; if any of B<headerfiles> are directories, then run I<h2ph> | |
1d3434b8 GS |
677 | on all files in those directories (and their subdirectories, etc.). B<-r> |
678 | and B<-a> are mutually exclusive. | |
679 | ||
680 | =item -a | |
681 | ||
682 | Run automagically; convert B<headerfiles>, as well as any B<.h> files | |
683 | which they include. This option will search for B<.h> files in all | |
684 | directories which your C compiler ordinarily uses. B<-a> and B<-r> are | |
685 | mutually exclusive. | |
50f6e060 KS |
686 | |
687 | =item -l | |
688 | ||
689 | Symbolic links will be replicated in the destination directory. If B<-l> | |
690 | is not specified, then links are skipped over. | |
691 | ||
692 | =item -h | |
693 | ||
694 | Put ``hints'' in the .ph files which will help in locating problems with | |
695 | I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax | |
696 | errors, instead of the cryptic | |
697 | ||
698 | [ some error condition ] at (eval mmm) line nnn | |
699 | ||
700 | you will see the slightly more helpful | |
701 | ||
702 | [ some error condition ] at filename.ph line nnn | |
703 | ||
704 | However, the B<.ph> files almost double in size when built using B<-h>. | |
705 | ||
1d3434b8 GS |
706 | =item -D |
707 | ||
708 | Include the code from the B<.h> file as a comment in the B<.ph> file. | |
709 | This is primarily used for debugging I<h2ph>. | |
710 | ||
7f04632d GS |
711 | =item -Q |
712 | ||
713 | ``Quiet'' mode; don't print out the names of the files being converted. | |
714 | ||
50f6e060 KS |
715 | =back |
716 | ||
1fef88e7 JM |
717 | =head1 ENVIRONMENT |
718 | ||
154e51a4 | 719 | No environment variables are used. |
1fef88e7 JM |
720 | |
721 | =head1 FILES | |
722 | ||
723 | /usr/include/*.h | |
724 | /usr/include/sys/*.h | |
725 | ||
154e51a4 | 726 | etc. |
1fef88e7 JM |
727 | |
728 | =head1 AUTHOR | |
729 | ||
154e51a4 | 730 | Larry Wall |
1fef88e7 JM |
731 | |
732 | =head1 SEE ALSO | |
733 | ||
154e51a4 | 734 | perl(1) |
1fef88e7 JM |
735 | |
736 | =head1 DIAGNOSTICS | |
737 | ||
154e51a4 | 738 | The usual warnings if it can't read or write the files involved. |
1fef88e7 JM |
739 | |
740 | =head1 BUGS | |
741 | ||
154e51a4 | 742 | Doesn't construct the %sizeof array for you. |
1fef88e7 | 743 | |
154e51a4 LW |
744 | It doesn't handle all C constructs, but it does attempt to isolate |
745 | definitions inside evals so that you can get at the definitions | |
746 | that it can translate. | |
1fef88e7 | 747 | |
154e51a4 LW |
748 | It's only intended as a rough tool. |
749 | You may need to dicker with the files produced. | |
1fef88e7 | 750 | |
7f04632d GS |
751 | You have to run this program by hand; it's not run as part of the Perl |
752 | installation. | |
753 | ||
754 | Doesn't handle complicated expressions built piecemeal, a la: | |
755 | ||
756 | enum { | |
757 | FIRST_VALUE, | |
758 | SECOND_VALUE, | |
759 | #ifdef ABC | |
760 | THIRD_VALUE | |
761 | #endif | |
762 | }; | |
763 | ||
764 | Doesn't necessarily locate all of your C compiler's internally-defined | |
765 | symbols. | |
766 | ||
1fef88e7 JM |
767 | =cut |
768 | ||
154e51a4 | 769 | !NO!SUBS! |
4633a7c4 LW |
770 | |
771 | close OUT or die "Can't close $file: $!"; | |
772 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; | |
773 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; | |
8a5546a1 | 774 | chdir $origdir; |