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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 | |
13 | # This forces PL files to create target in same directory as PL file. |
14 | # This is so that make depend always knows where to find PL derivatives. |
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15 | chdir dirname($0); |
16 | $file = basename($0, '.PL'); |
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17 | $file .= '.com' if $^O eq 'VMS'; |
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18 | |
19 | open OUT,">$file" or die "Can't create $file: $!"; |
20 | |
21 | print "Extracting $file (with variable substitutions)\n"; |
22 | |
23 | # In this section, perl variables will be expanded during extraction. |
24 | # You can use $Config{...} to use Configure variables. |
25 | |
26 | print OUT <<"!GROK!THIS!"; |
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27 | $Config{startperl} |
28 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
29 | if \$running_under_some_shell; |
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30 | !GROK!THIS! |
31 | |
32 | # In the following, perl variables are not expanded during extraction. |
33 | |
34 | print OUT <<'!NO!SUBS!'; |
35 | |
36 | =head1 NAME |
37 | |
38 | pl2pm - Rough tool to translate Perl4 .pl files to Perl5 .pm modules. |
39 | |
40 | =head1 SYNOPSIS |
41 | |
42 | B<pl2pm> F<files> |
43 | |
44 | =head1 DESCRIPTION |
45 | |
46 | B<pl2pm> is a tool to aid in the conversion of Perl4-style .pl |
47 | library files to Perl5-style library modules. Usually, your old .pl |
48 | file will still work fine and you should only use this tool if you |
49 | plan to update your library to use some of the newer Perl 5 features, |
50 | such as AutoLoading. |
51 | |
52 | =head1 LIMITATIONS |
53 | |
54 | It's just a first step, but it's usually a good first step. |
55 | |
56 | =head1 AUTHOR |
57 | |
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58 | Larry Wall <larry@wall.org> |
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59 | |
60 | =cut |
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61 | |
62 | while (<DATA>) { |
63 | chop; |
64 | $keyword{$_} = 1; |
65 | } |
66 | |
67 | undef $/; |
68 | $* = 1; |
69 | while (<>) { |
70 | $newname = $ARGV; |
71 | $newname =~ s/\.pl$/.pm/ || next; |
72 | $newname =~ s#(.*/)?(\w+)#$1\u$2#; |
73 | if (-f $newname) { |
74 | warn "Won't overwrite existing $newname\n"; |
75 | next; |
76 | } |
77 | $oldpack = $2; |
78 | $newpack = "\u$2"; |
79 | @export = (); |
80 | print "$oldpack => $newpack\n" if $verbose; |
81 | |
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82 | s/\bstd(in|out|err)\b/\U$&/g; |
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83 | s/(sub\s+)(\w+)(\s*\{[ \t]*\n)\s*package\s+$oldpack\s*;[ \t]*\n+/${1}main'$2$3/ig; |
84 | if (/sub\s+main'/) { |
85 | @export = m/sub\s+main'(\w+)/g; |
86 | s/(sub\s+)main'(\w+)/$1$2/g; |
87 | } |
88 | else { |
89 | @export = m/sub\s+([A-Za-z]\w*)/g; |
90 | } |
91 | @export_ok = grep($keyword{$_}, @export); |
92 | @export = grep(!$keyword{$_}, @export); |
93 | @export{@export} = (1) x @export; |
94 | s/(^\s*);#/$1#/g; |
95 | s/(#.*)require ['"]$oldpack\.pl['"]/$1use $newpack/; |
96 | s/(package\s*)($oldpack)\s*;[ \t]*\n+//ig; |
97 | s/([\$\@%&*])'(\w+)/&xlate($1,"",$2)/eg; |
98 | s/([\$\@%&*]?)(\w+)'(\w+)/&xlate($1,$2,$3)/eg; |
99 | if (!/\$\[\s*\)?\s*=\s*[^0\s]/) { |
100 | s/^\s*(local\s*\()?\s*\$\[\s*\)?\s*=\s*0\s*;[ \t]*\n//g; |
101 | s/\$\[\s*\+\s*//g; |
102 | s/\s*\+\s*\$\[//g; |
103 | s/\$\[/0/g; |
104 | } |
105 | s/open\s+(\w+)/open($1)/g; |
106 | |
107 | if (s/\bdie\b/croak/g) { |
108 | $carp = "use Carp;\n"; |
109 | s/croak "([^"]*)\\n"/croak "$1"/g; |
110 | } |
111 | else { |
112 | $carp = ""; |
113 | } |
114 | if (@export_ok) { |
115 | $export_ok = "\@EXPORT_OK = qw(@export_ok);\n"; |
116 | } |
117 | else { |
118 | $export_ok = ""; |
119 | } |
120 | |
121 | open(PM, ">$newname") || warn "Can't create $newname: $!\n"; |
122 | print PM <<"END"; |
123 | package $newpack; |
124 | require 5.000; |
125 | require Exporter; |
126 | $carp |
127 | \@ISA = qw(Exporter); |
128 | \@EXPORT = qw(@export); |
129 | $export_ok |
130 | $_ |
131 | END |
132 | } |
133 | |
134 | sub xlate { |
135 | local($prefix, $pack, $ident) = @_; |
136 | if ($prefix eq '' && $ident =~ /^(t|s|m|d|ing|ll|ed|ve|re)$/) { |
137 | "${pack}'$ident"; |
138 | } |
139 | elsif ($pack eq "" || $pack eq "main") { |
140 | if ($export{$ident}) { |
141 | "$prefix$ident"; |
142 | } |
143 | else { |
144 | "$prefix${pack}::$ident"; |
145 | } |
146 | } |
147 | elsif ($pack eq $oldpack) { |
148 | "$prefix${newpack}::$ident"; |
149 | } |
150 | else { |
151 | "$prefix${pack}::$ident"; |
152 | } |
153 | } |
154 | __END__ |
155 | AUTOLOAD |
156 | BEGIN |
157 | CORE |
158 | DESTROY |
159 | END |
160 | abs |
161 | accept |
162 | alarm |
163 | and |
164 | atan2 |
165 | bind |
166 | binmode |
167 | bless |
168 | caller |
169 | chdir |
170 | chmod |
171 | chop |
172 | chown |
173 | chr |
174 | chroot |
175 | close |
176 | closedir |
177 | cmp |
178 | connect |
179 | continue |
180 | cos |
181 | crypt |
182 | dbmclose |
183 | dbmopen |
184 | defined |
185 | delete |
186 | die |
187 | do |
188 | dump |
189 | each |
190 | else |
191 | elsif |
192 | endgrent |
193 | endhostent |
194 | endnetent |
195 | endprotoent |
196 | endpwent |
197 | endservent |
198 | eof |
199 | eq |
200 | eval |
201 | exec |
202 | exit |
203 | exp |
204 | fcntl |
205 | fileno |
206 | flock |
207 | for |
208 | foreach |
209 | fork |
210 | format |
211 | formline |
212 | ge |
213 | getc |
214 | getgrent |
215 | getgrgid |
216 | getgrnam |
217 | gethostbyaddr |
218 | gethostbyname |
219 | gethostent |
220 | getlogin |
221 | getnetbyaddr |
222 | getnetbyname |
223 | getnetent |
224 | getpeername |
225 | getpgrp |
226 | getppid |
227 | getpriority |
228 | getprotobyname |
229 | getprotobynumber |
230 | getprotoent |
231 | getpwent |
232 | getpwnam |
233 | getpwuid |
234 | getservbyname |
235 | getservbyport |
236 | getservent |
237 | getsockname |
238 | getsockopt |
239 | glob |
240 | gmtime |
241 | goto |
242 | grep |
243 | gt |
244 | hex |
245 | if |
246 | index |
247 | int |
248 | ioctl |
249 | join |
250 | keys |
251 | kill |
252 | last |
253 | lc |
254 | lcfirst |
255 | le |
256 | length |
257 | link |
258 | listen |
259 | local |
260 | localtime |
261 | log |
262 | lstat |
263 | lt |
264 | m |
265 | mkdir |
266 | msgctl |
267 | msgget |
268 | msgrcv |
269 | msgsnd |
270 | my |
271 | ne |
272 | next |
273 | no |
274 | not |
275 | oct |
276 | open |
277 | opendir |
278 | or |
279 | ord |
280 | pack |
281 | package |
282 | pipe |
283 | pop |
284 | print |
285 | printf |
286 | push |
287 | q |
288 | qq |
289 | quotemeta |
290 | qw |
291 | qx |
292 | rand |
293 | read |
294 | readdir |
295 | readline |
296 | readlink |
297 | readpipe |
298 | recv |
299 | redo |
300 | ref |
301 | rename |
302 | require |
303 | reset |
304 | return |
305 | reverse |
306 | rewinddir |
307 | rindex |
308 | rmdir |
309 | s |
310 | scalar |
311 | seek |
312 | seekdir |
313 | select |
314 | semctl |
315 | semget |
316 | semop |
317 | send |
318 | setgrent |
319 | sethostent |
320 | setnetent |
321 | setpgrp |
322 | setpriority |
323 | setprotoent |
324 | setpwent |
325 | setservent |
326 | setsockopt |
327 | shift |
328 | shmctl |
329 | shmget |
330 | shmread |
331 | shmwrite |
332 | shutdown |
333 | sin |
334 | sleep |
335 | socket |
336 | socketpair |
337 | sort |
338 | splice |
339 | split |
340 | sprintf |
341 | sqrt |
342 | srand |
343 | stat |
344 | study |
345 | sub |
346 | substr |
347 | symlink |
348 | syscall |
349 | sysread |
350 | system |
351 | syswrite |
352 | tell |
353 | telldir |
354 | tie |
355 | time |
356 | times |
357 | tr |
358 | truncate |
359 | uc |
360 | ucfirst |
361 | umask |
362 | undef |
363 | unless |
364 | unlink |
365 | unpack |
366 | unshift |
367 | untie |
368 | until |
369 | use |
370 | utime |
371 | values |
372 | vec |
373 | wait |
374 | waitpid |
375 | wantarray |
376 | warn |
377 | while |
378 | write |
379 | x |
380 | xor |
381 | y |
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382 | !NO!SUBS! |
383 | |
384 | close OUT or die "Can't close $file: $!"; |
385 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
386 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |