| 1 | #!/usr/local/bin/perl |
| 2 | |
| 3 | use Config; |
| 4 | use File::Basename qw(&basename &dirname); |
| 5 | use Cwd; |
| 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 | |
| 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 | $origdir = cwd; |
| 17 | chdir dirname($0); |
| 18 | $file = basename($0, '.PL'); |
| 19 | $file .= '.com' if $^O eq 'VMS'; |
| 20 | |
| 21 | open OUT,">$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!"; |
| 29 | $Config{startperl} |
| 30 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
| 31 | if \$running_under_some_shell; |
| 32 | !GROK!THIS! |
| 33 | |
| 34 | # In the following, perl variables are not expanded during extraction. |
| 35 | |
| 36 | print OUT <<'!NO!SUBS!'; |
| 37 | |
| 38 | =head1 NAME |
| 39 | |
| 40 | pl2pm - Rough tool to translate Perl4 .pl files to Perl5 .pm modules. |
| 41 | |
| 42 | =head1 SYNOPSIS |
| 43 | |
| 44 | B<pl2pm> F<files> |
| 45 | |
| 46 | =head1 DESCRIPTION |
| 47 | |
| 48 | B<pl2pm> is a tool to aid in the conversion of Perl4-style .pl |
| 49 | library files to Perl5-style library modules. Usually, your old .pl |
| 50 | file will still work fine and you should only use this tool if you |
| 51 | plan to update your library to use some of the newer Perl 5 features, |
| 52 | such as AutoLoading. |
| 53 | |
| 54 | =head1 LIMITATIONS |
| 55 | |
| 56 | It's just a first step, but it's usually a good first step. |
| 57 | |
| 58 | =head1 AUTHOR |
| 59 | |
| 60 | Larry Wall <larry@wall.org> |
| 61 | |
| 62 | =cut |
| 63 | |
| 64 | use strict; |
| 65 | use warnings; |
| 66 | |
| 67 | my %keyword = (); |
| 68 | |
| 69 | while (<DATA>) { |
| 70 | chomp; |
| 71 | $keyword{$_} = 1; |
| 72 | } |
| 73 | |
| 74 | local $/; |
| 75 | |
| 76 | while (<>) { |
| 77 | my $newname = $ARGV; |
| 78 | $newname =~ s/\.pl$/.pm/ || next; |
| 79 | $newname =~ s#(.*/)?(\w+)#$1\u$2#; |
| 80 | if (-f $newname) { |
| 81 | warn "Won't overwrite existing $newname\n"; |
| 82 | next; |
| 83 | } |
| 84 | my $oldpack = $2; |
| 85 | my $newpack = "\u$2"; |
| 86 | my @export = (); |
| 87 | |
| 88 | s/\bstd(in|out|err)\b/\U$&/g; |
| 89 | s/(sub\s+)(\w+)(\s*\{[ \t]*\n)\s*package\s+$oldpack\s*;[ \t]*\n+/${1}main'$2$3/ig; |
| 90 | if (/sub\s+\w+'/) { |
| 91 | @export = m/sub\s+\w+'(\w+)/g; |
| 92 | s/(sub\s+)main'(\w+)/$1$2/g; |
| 93 | } |
| 94 | else { |
| 95 | @export = m/sub\s+([A-Za-z]\w*)/g; |
| 96 | } |
| 97 | my @export_ok = grep($keyword{$_}, @export); |
| 98 | @export = grep(!$keyword{$_}, @export); |
| 99 | |
| 100 | my %export = (); |
| 101 | @export{@export} = (1) x @export; |
| 102 | |
| 103 | s/(^\s*);#/$1#/g; |
| 104 | s/(#.*)require ['"]$oldpack\.pl['"]/$1use $newpack/; |
| 105 | s/(package\s*)($oldpack)\s*;[ \t]*\n+//ig; |
| 106 | s/([\$\@%&*])'(\w+)/&xlate($1,"",$2,$newpack,$oldpack,\%export)/eg; |
| 107 | s/([\$\@%&*]?)(\w+)'(\w+)/&xlate($1,$2,$3,$newpack,$oldpack,\%export)/eg; |
| 108 | if (!/\$\[\s*\)?\s*=\s*[^0\s]/) { |
| 109 | s/^\s*(local\s*\()?\s*\$\[\s*\)?\s*=\s*0\s*;[ \t]*\n//g; |
| 110 | s/\$\[\s*\+\s*//g; |
| 111 | s/\s*\+\s*\$\[//g; |
| 112 | s/\$\[/0/g; |
| 113 | } |
| 114 | s/open\s+(\w+)/open($1)/g; |
| 115 | |
| 116 | my $export_ok = ''; |
| 117 | my $carp =''; |
| 118 | |
| 119 | |
| 120 | if (s/\bdie\b/croak/g) { |
| 121 | $carp = "use Carp;\n"; |
| 122 | s/croak "([^"]*)\\n"/croak "$1"/g; |
| 123 | } |
| 124 | |
| 125 | if (@export_ok) { |
| 126 | $export_ok = "\@EXPORT_OK = qw(@export_ok);\n"; |
| 127 | } |
| 128 | |
| 129 | if ( open(PM, ">$newname") ) { |
| 130 | print PM <<"END"; |
| 131 | package $newpack; |
| 132 | use 5.006; |
| 133 | require Exporter; |
| 134 | $carp |
| 135 | \@ISA = qw(Exporter); |
| 136 | \@EXPORT = qw(@export); |
| 137 | $export_ok |
| 138 | $_ |
| 139 | END |
| 140 | } |
| 141 | else { |
| 142 | warn "Can't create $newname: $!\n"; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | sub xlate { |
| 147 | my ($prefix, $pack, $ident,$newpack,$oldpack,$export) = @_; |
| 148 | |
| 149 | my $xlated ; |
| 150 | if ($prefix eq '' && $ident =~ /^(t|s|m|d|ing|ll|ed|ve|re)$/) { |
| 151 | $xlated = "${pack}'$ident"; |
| 152 | } |
| 153 | elsif ($pack eq '' || $pack eq 'main') { |
| 154 | if ($export->{$ident}) { |
| 155 | $xlated = "$prefix$ident"; |
| 156 | } |
| 157 | else { |
| 158 | $xlated = "$prefix${pack}::$ident"; |
| 159 | } |
| 160 | } |
| 161 | elsif ($pack eq $oldpack) { |
| 162 | $xlated = "$prefix${newpack}::$ident"; |
| 163 | } |
| 164 | else { |
| 165 | $xlated = "$prefix${pack}::$ident"; |
| 166 | } |
| 167 | |
| 168 | return $xlated; |
| 169 | } |
| 170 | __END__ |
| 171 | AUTOLOAD |
| 172 | BEGIN |
| 173 | CHECK |
| 174 | CORE |
| 175 | DESTROY |
| 176 | END |
| 177 | INIT |
| 178 | UNITCHECK |
| 179 | abs |
| 180 | accept |
| 181 | alarm |
| 182 | and |
| 183 | atan2 |
| 184 | bind |
| 185 | binmode |
| 186 | bless |
| 187 | caller |
| 188 | chdir |
| 189 | chmod |
| 190 | chomp |
| 191 | chop |
| 192 | chown |
| 193 | chr |
| 194 | chroot |
| 195 | close |
| 196 | closedir |
| 197 | cmp |
| 198 | connect |
| 199 | continue |
| 200 | cos |
| 201 | crypt |
| 202 | dbmclose |
| 203 | dbmopen |
| 204 | defined |
| 205 | delete |
| 206 | die |
| 207 | do |
| 208 | dump |
| 209 | each |
| 210 | else |
| 211 | elsif |
| 212 | endgrent |
| 213 | endhostent |
| 214 | endnetent |
| 215 | endprotoent |
| 216 | endpwent |
| 217 | endservent |
| 218 | eof |
| 219 | eq |
| 220 | eval |
| 221 | exec |
| 222 | exists |
| 223 | exit |
| 224 | exp |
| 225 | fcntl |
| 226 | fileno |
| 227 | flock |
| 228 | for |
| 229 | foreach |
| 230 | fork |
| 231 | format |
| 232 | formline |
| 233 | ge |
| 234 | getc |
| 235 | getgrent |
| 236 | getgrgid |
| 237 | getgrnam |
| 238 | gethostbyaddr |
| 239 | gethostbyname |
| 240 | gethostent |
| 241 | getlogin |
| 242 | getnetbyaddr |
| 243 | getnetbyname |
| 244 | getnetent |
| 245 | getpeername |
| 246 | getpgrp |
| 247 | getppid |
| 248 | getpriority |
| 249 | getprotobyname |
| 250 | getprotobynumber |
| 251 | getprotoent |
| 252 | getpwent |
| 253 | getpwnam |
| 254 | getpwuid |
| 255 | getservbyname |
| 256 | getservbyport |
| 257 | getservent |
| 258 | getsockname |
| 259 | getsockopt |
| 260 | glob |
| 261 | gmtime |
| 262 | goto |
| 263 | grep |
| 264 | gt |
| 265 | hex |
| 266 | if |
| 267 | index |
| 268 | int |
| 269 | ioctl |
| 270 | join |
| 271 | keys |
| 272 | kill |
| 273 | last |
| 274 | lc |
| 275 | lcfirst |
| 276 | le |
| 277 | length |
| 278 | link |
| 279 | listen |
| 280 | local |
| 281 | localtime |
| 282 | lock |
| 283 | log |
| 284 | lstat |
| 285 | lt |
| 286 | m |
| 287 | map |
| 288 | mkdir |
| 289 | msgctl |
| 290 | msgget |
| 291 | msgrcv |
| 292 | msgsnd |
| 293 | my |
| 294 | ne |
| 295 | next |
| 296 | no |
| 297 | not |
| 298 | oct |
| 299 | open |
| 300 | opendir |
| 301 | or |
| 302 | ord |
| 303 | our |
| 304 | pack |
| 305 | package |
| 306 | pipe |
| 307 | pop |
| 308 | pos |
| 309 | print |
| 310 | printf |
| 311 | prototype |
| 312 | push |
| 313 | q |
| 314 | qq |
| 315 | qr |
| 316 | quotemeta |
| 317 | qw |
| 318 | qx |
| 319 | rand |
| 320 | read |
| 321 | readdir |
| 322 | readline |
| 323 | readlink |
| 324 | readpipe |
| 325 | recv |
| 326 | redo |
| 327 | ref |
| 328 | rename |
| 329 | require |
| 330 | reset |
| 331 | return |
| 332 | reverse |
| 333 | rewinddir |
| 334 | rindex |
| 335 | rmdir |
| 336 | s |
| 337 | scalar |
| 338 | seek |
| 339 | seekdir |
| 340 | select |
| 341 | semctl |
| 342 | semget |
| 343 | semop |
| 344 | send |
| 345 | setgrent |
| 346 | sethostent |
| 347 | setnetent |
| 348 | setpgrp |
| 349 | setpriority |
| 350 | setprotoent |
| 351 | setpwent |
| 352 | setservent |
| 353 | setsockopt |
| 354 | shift |
| 355 | shmctl |
| 356 | shmget |
| 357 | shmread |
| 358 | shmwrite |
| 359 | shutdown |
| 360 | sin |
| 361 | sleep |
| 362 | socket |
| 363 | socketpair |
| 364 | sort |
| 365 | splice |
| 366 | split |
| 367 | sprintf |
| 368 | sqrt |
| 369 | srand |
| 370 | stat |
| 371 | study |
| 372 | sub |
| 373 | substr |
| 374 | symlink |
| 375 | syscall |
| 376 | sysopen |
| 377 | sysread |
| 378 | sysseek |
| 379 | system |
| 380 | syswrite |
| 381 | tell |
| 382 | telldir |
| 383 | tie |
| 384 | tied |
| 385 | time |
| 386 | times |
| 387 | tr |
| 388 | truncate |
| 389 | uc |
| 390 | ucfirst |
| 391 | umask |
| 392 | undef |
| 393 | unless |
| 394 | unlink |
| 395 | unpack |
| 396 | unshift |
| 397 | untie |
| 398 | until |
| 399 | use |
| 400 | utime |
| 401 | values |
| 402 | vec |
| 403 | wait |
| 404 | waitpid |
| 405 | wantarray |
| 406 | warn |
| 407 | while |
| 408 | write |
| 409 | x |
| 410 | xor |
| 411 | y |
| 412 | !NO!SUBS! |
| 413 | |
| 414 | close OUT or die "Can't close $file: $!"; |
| 415 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
| 416 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |
| 417 | chdir $origdir; |