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1 | #!/usr/local/bin/perl |
2 | |
3 | use Config; |
4 | use File::Basename qw(&basename &dirname); |
5 | |
6 | # List explicitly here the variables you want Configure to |
7 | # generate. Metaconfig only looks for shell variables, so you |
8 | # have to mention them as if they were shell variables, not |
9 | # %Config entries. Thus you write |
10 | # $startperl |
11 | # to ensure Configure will look for $Config{startperl}. |
12 | # Wanted: $archlibexp |
13 | |
14 | # This forces PL files to create target in same directory as PL file. |
15 | # This is so that make depend always knows where to find PL derivatives. |
16 | chdir(dirname($0)); |
17 | ($file = basename($0)) =~ s/\.PL$//; |
18 | $file =~ s/\.pl$// |
f360dba1 |
19 | if ($^O eq 'VMS' or $^O eq 'os2'); # "case-forgiving" |
4633a7c4 |
20 | |
21 | open OUT,">$file" or die "Can't create $file: $!"; |
22 | |
23 | print "Extracting $file (with variable substitutions)\n"; |
24 | |
25 | # In this section, perl variables will be expanded during extraction. |
26 | # You can use $Config{...} to use Configure variables. |
27 | |
28 | print OUT <<"!GROK!THIS!"; |
5f05dabc |
29 | $Config{startperl} |
30 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
31 | if \$running_under_some_shell; |
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32 | !GROK!THIS! |
33 | |
4633a7c4 |
34 | # In the following, perl variables are not expanded during extraction. |
35 | |
36 | print OUT <<'!NO!SUBS!'; |
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37 | |
2c2acf7e |
38 | use Config; |
39 | $perlincl = @Config{installsitearch}; |
40 | |
154e51a4 |
41 | chdir '/usr/include' || die "Can't cd /usr/include"; |
42 | |
fe14fcc3 |
43 | @isatype = split(' ',<<END); |
44 | char uchar u_char |
45 | short ushort u_short |
46 | int uint u_int |
47 | long ulong u_long |
48 | FILE |
49 | END |
50 | |
55204971 |
51 | @isatype{@isatype} = (1) x @isatype; |
748a9306 |
52 | $inif = 0; |
fe14fcc3 |
53 | |
54 | @ARGV = ('-') unless @ARGV; |
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55 | |
56 | foreach $file (@ARGV) { |
5f05dabc |
57 | # Recover from header files with unbalanced cpp directives |
58 | $t = ''; |
59 | $tab = 0; |
60 | |
fe14fcc3 |
61 | if ($file eq '-') { |
62 | open(IN, "-"); |
63 | open(OUT, ">-"); |
64 | } |
65 | else { |
66 | ($outfile = $file) =~ s/\.h$/.ph/ || next; |
67 | print "$file -> $outfile\n"; |
68 | if ($file =~ m|^(.*)/|) { |
69 | $dir = $1; |
70 | if (!-d "$perlincl/$dir") { |
71 | mkdir("$perlincl/$dir",0777); |
72 | } |
154e51a4 |
73 | } |
fe14fcc3 |
74 | open(IN,"$file") || ((warn "Can't open $file: $!\n"),next); |
75 | open(OUT,">$perlincl/$outfile") || die "Can't create $outfile: $!\n"; |
154e51a4 |
76 | } |
154e51a4 |
77 | while (<IN>) { |
78 | chop; |
79 | while (/\\$/) { |
80 | chop; |
81 | $_ .= <IN>; |
82 | chop; |
83 | } |
84 | if (s:/\*:\200:g) { |
85 | s:\*/:\201:g; |
86 | s/\200[^\201]*\201//g; # delete single line comments |
87 | if (s/\200.*//) { # begin multi-line comment? |
88 | $_ .= '/*'; |
89 | $_ .= <IN>; |
90 | redo; |
91 | } |
92 | } |
93 | if (s/^#\s*//) { |
94 | if (s/^define\s+(\w+)//) { |
95 | $name = $1; |
96 | $new = ''; |
97 | s/\s+$//; |
98 | if (s/^\(([\w,\s]*)\)//) { |
99 | $args = $1; |
100 | if ($args ne '') { |
101 | foreach $arg (split(/,\s*/,$args)) { |
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102 | $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; |
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103 | $curargs{$arg} = 1; |
104 | } |
105 | $args =~ s/\b(\w)/\$$1/g; |
106 | $args = "local($args) = \@_;\n$t "; |
107 | } |
108 | s/^\s+//; |
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109 | expr(); |
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110 | $new =~ s/(["\\])/\\$1/g; |
111 | if ($t ne '') { |
112 | $new =~ s/(['\\])/\\$1/g; |
113 | print OUT $t, |
114 | "eval 'sub $name {\n$t ${args}eval \"$new\";\n$t}';\n"; |
115 | } |
116 | else { |
117 | print OUT "sub $name {\n ${args}eval \"$new\";\n}\n"; |
118 | } |
119 | %curargs = (); |
120 | } |
121 | else { |
122 | s/^\s+//; |
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123 | expr(); |
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124 | $new = 1 if $new eq ''; |
125 | if ($t ne '') { |
126 | $new =~ s/(['\\])/\\$1/g; |
127 | print OUT $t,"eval 'sub $name {",$new,";}';\n"; |
128 | } |
129 | else { |
130 | print OUT $t,"sub $name {",$new,";}\n"; |
131 | } |
132 | } |
133 | } |
fb21d8eb |
134 | elsif (/^include\s*<(.*)>/) { |
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135 | ($incl = $1) =~ s/\.h$/.ph/; |
136 | print OUT $t,"require '$incl';\n"; |
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137 | } |
138 | elsif (/^ifdef\s+(\w+)/) { |
139 | print OUT $t,"if (defined &$1) {\n"; |
140 | $tab += 4; |
141 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
142 | } |
143 | elsif (/^ifndef\s+(\w+)/) { |
144 | print OUT $t,"if (!defined &$1) {\n"; |
145 | $tab += 4; |
146 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
147 | } |
148 | elsif (s/^if\s+//) { |
149 | $new = ''; |
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150 | $inif = 1; |
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151 | expr(); |
748a9306 |
152 | $inif = 0; |
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153 | print OUT $t,"if ($new) {\n"; |
154 | $tab += 4; |
155 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
156 | } |
157 | elsif (s/^elif\s+//) { |
158 | $new = ''; |
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159 | $inif = 1; |
5f05dabc |
160 | expr(); |
748a9306 |
161 | $inif = 0; |
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162 | $tab -= 4; |
163 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
164 | print OUT $t,"}\n${t}elsif ($new) {\n"; |
165 | $tab += 4; |
166 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
167 | } |
168 | elsif (/^else/) { |
169 | $tab -= 4; |
170 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
171 | print OUT $t,"}\n${t}else {\n"; |
172 | $tab += 4; |
173 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
174 | } |
175 | elsif (/^endif/) { |
176 | $tab -= 4; |
177 | $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); |
178 | print OUT $t,"}\n"; |
179 | } |
180 | } |
181 | } |
182 | print OUT "1;\n"; |
183 | } |
184 | |
185 | sub expr { |
186 | while ($_ ne '') { |
187 | s/^(\s+)// && do {$new .= ' '; next;}; |
188 | s/^(0x[0-9a-fA-F]+)// && do {$new .= $1; next;}; |
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189 | s/^(\d+)[LlUu]*// && do {$new .= $1; next;}; |
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190 | s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; |
191 | s/^'((\\"|[^"])*)'// && do { |
192 | if ($curargs{$1}) { |
193 | $new .= "ord('\$$1')"; |
194 | } |
195 | else { |
196 | $new .= "ord('$1')"; |
197 | } |
198 | next; |
199 | }; |
5f05dabc |
200 | # replace "sizeof(foo)" with "{foo}" |
201 | # also, remove * (C dereference operator) to avoid perl syntax |
202 | # problems. Where the %sizeof array comes from is anyone's |
203 | # guess (c2ph?), but this at least avoids fatal syntax errors. |
204 | # Behavior is undefined if sizeof() delimiters are unbalanced. |
205 | # This code was modified to able to handle constructs like this: |
206 | # sizeof(*(p)), which appear in the HP-UX 10.01 header files. |
207 | s/^sizeof\s*\(// && do { |
208 | $new .= '$sizeof'; |
209 | my $lvl = 1; # already saw one open paren |
210 | # tack { on the front, and skip it in the loop |
211 | $_ = "{" . "$_"; |
212 | my $index = 1; |
213 | # find balanced closing paren |
214 | while ($index <= length($_) && $lvl > 0) { |
215 | $lvl++ if substr($_, $index, 1) eq "("; |
216 | $lvl-- if substr($_, $index, 1) eq ")"; |
217 | $index++; |
218 | } |
219 | # tack } on the end, replacing ) |
220 | substr($_, $index - 1, 1) = "}"; |
221 | # remove pesky * operators within the sizeof argument |
222 | substr($_, 0, $index - 1) =~ s/\*//g; |
223 | next; |
224 | }; |
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225 | s/^([_a-zA-Z]\w*)// && do { |
226 | $id = $1; |
fe14fcc3 |
227 | if ($id eq 'struct') { |
228 | s/^\s+(\w+)//; |
229 | $id .= ' ' . $1; |
230 | $isatype{$id} = 1; |
231 | } |
232 | elsif ($id eq 'unsigned') { |
233 | s/^\s+(\w+)//; |
234 | $id .= ' ' . $1; |
235 | $isatype{$id} = 1; |
236 | } |
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237 | if ($curargs{$id}) { |
238 | $new .= '$' . $id; |
239 | } |
240 | elsif ($id eq 'defined') { |
241 | $new .= 'defined'; |
242 | } |
243 | elsif (/^\(/) { |
e5d73d77 |
244 | s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat |
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245 | $new .= " &$id"; |
246 | } |
247 | elsif ($isatype{$id}) { |
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248 | if ($new =~ /{\s*$/) { |
249 | $new .= "'$id'"; |
250 | } |
251 | elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { |
252 | $new =~ s/\(\s*$//; |
253 | s/^[\s*]*\)//; |
254 | } |
255 | else { |
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256 | $new .= q(').$id.q('); |
fe14fcc3 |
257 | } |
154e51a4 |
258 | } |
259 | else { |
c07a80fd |
260 | if ($inif && $new !~ /defined\s*\($/) { |
748a9306 |
261 | $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; |
fb21d8eb |
262 | } |
263 | elsif (/^\[/) { |
264 | $new .= ' $' . $id; |
265 | } |
266 | else { |
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267 | $new .= ' &' . $id; |
268 | } |
154e51a4 |
269 | } |
270 | next; |
271 | }; |
fb21d8eb |
272 | s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;}; |
154e51a4 |
273 | } |
274 | } |
275 | ############################################################################## |
1fef88e7 |
276 | __END__ |
277 | |
278 | =head1 NAME |
279 | |
280 | h2ph - convert .h C header files to .ph Perl header files |
281 | |
282 | =head1 SYNOPSIS |
283 | |
284 | B<h2ph [headerfiles]> |
285 | |
286 | =head1 DESCRIPTION |
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287 | |
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288 | I<h2ph> |
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289 | converts any C header files specified to the corresponding Perl header file |
290 | format. |
291 | It is most easily run while in /usr/include: |
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292 | |
293 | cd /usr/include; h2ph * sys/* |
294 | |
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295 | If run with no arguments, filters standard input to standard output. |
1fef88e7 |
296 | |
297 | =head1 ENVIRONMENT |
298 | |
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299 | No environment variables are used. |
1fef88e7 |
300 | |
301 | =head1 FILES |
302 | |
303 | /usr/include/*.h |
304 | /usr/include/sys/*.h |
305 | |
154e51a4 |
306 | etc. |
1fef88e7 |
307 | |
308 | =head1 AUTHOR |
309 | |
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310 | Larry Wall |
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311 | |
312 | =head1 SEE ALSO |
313 | |
154e51a4 |
314 | perl(1) |
1fef88e7 |
315 | |
316 | =head1 DIAGNOSTICS |
317 | |
154e51a4 |
318 | The usual warnings if it can't read or write the files involved. |
1fef88e7 |
319 | |
320 | =head1 BUGS |
321 | |
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322 | Doesn't construct the %sizeof array for you. |
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323 | |
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324 | It doesn't handle all C constructs, but it does attempt to isolate |
325 | definitions inside evals so that you can get at the definitions |
326 | that it can translate. |
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327 | |
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328 | It's only intended as a rough tool. |
329 | You may need to dicker with the files produced. |
1fef88e7 |
330 | |
331 | =cut |
332 | |
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333 | !NO!SUBS! |
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334 | |
335 | close OUT or die "Can't close $file: $!"; |
336 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
337 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |