| Commit | Line | Data |
|---|
| 79072805 |
1 | #!/usr/local/bin/perl |
| 2 | |
| 3 | eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}' |
| 4 | if $running_under_some_shell; |
| 5 | |
| 6 | $bin = '/usr/local/bin'; |
| 7 | |
| 8 | # $RCSfile: s2p.SH,v $$Revision: 4.1 $$Date: 92/08/07 18:29:23 $ |
| 9 | # |
| 10 | # $Log: s2p.SH,v $ |
| 11 | # Revision 4.1 92/08/07 18:29:23 lwall |
| 12 | # |
| 13 | # Revision 4.0.1.2 92/06/08 17:26:31 lwall |
| 14 | # patch20: s2p didn't output portable startup code |
| 15 | # patch20: added ... as variant on .. |
| 16 | # patch20: s2p didn't translate s/pat/\&/ or s/pat/\$/ or s/pat/\\1/ right |
| 17 | # |
| 18 | # Revision 4.0.1.1 91/06/07 12:19:18 lwall |
| 19 | # patch4: s2p now handles embedded newlines better and optimizes common idioms |
| 20 | # |
| 21 | # Revision 4.0 91/03/20 01:57:59 lwall |
| 22 | # 4.0 baseline. |
| 23 | # |
| 24 | # |
| 25 | |
| 26 | $indent = 4; |
| 27 | $shiftwidth = 4; |
| 28 | $l = '{'; $r = '}'; |
| 29 | |
| 30 | while ($ARGV[0] =~ /^-/) { |
| 31 | $_ = shift; |
| 32 | last if /^--/; |
| 33 | if (/^-D/) { |
| 34 | $debug++; |
| 35 | open(BODY,'>-'); |
| 36 | next; |
| 37 | } |
| 38 | if (/^-n/) { |
| 39 | $assumen++; |
| 40 | next; |
| 41 | } |
| 42 | if (/^-p/) { |
| 43 | $assumep++; |
| 44 | next; |
| 45 | } |
| 46 | die "I don't recognize this switch: $_\n"; |
| 47 | } |
| 48 | |
| 49 | unless ($debug) { |
| 50 | open(BODY,">/tmp/sperl$$") || |
| 51 | &Die("Can't open temp file: $!\n"); |
| 52 | } |
| 53 | |
| 54 | if (!$assumen && !$assumep) { |
| 55 | print BODY &q(<<'EOT'); |
| 56 | : while ($ARGV[0] =~ /^-/) { |
| 57 | : $_ = shift; |
| 58 | : last if /^--/; |
| 59 | : if (/^-n/) { |
| 60 | : $nflag++; |
| 61 | : next; |
| 62 | : } |
| 63 | : die "I don't recognize this switch: $_\\n"; |
| 64 | : } |
| 65 | : |
| 66 | EOT |
| 67 | } |
| 68 | |
| 69 | print BODY &q(<<'EOT'); |
| 70 | : #ifdef PRINTIT |
| 71 | : #ifdef ASSUMEP |
| 72 | : $printit++; |
| 73 | : #else |
| 74 | : $printit++ unless $nflag; |
| 75 | : #endif |
| 76 | : #endif |
| 77 | : <><> |
| 78 | : $\ = "\n"; # automatically add newline on print |
| 79 | : <><> |
| 80 | : #ifdef TOPLABEL |
| 81 | : LINE: |
| 82 | : while (chop($_ = <>)) { |
| 83 | : #else |
| 84 | : LINE: |
| 85 | : while (<>) { |
| 86 | : chop; |
| 87 | : #endif |
| 88 | EOT |
| 89 | |
| 90 | LINE: |
| 91 | while (<>) { |
| 92 | |
| 93 | # Wipe out surrounding whitespace. |
| 94 | |
| 95 | s/[ \t]*(.*)\n$/$1/; |
| 96 | |
| 97 | # Perhaps it's a label/comment. |
| 98 | |
| 99 | if (/^:/) { |
| 100 | s/^:[ \t]*//; |
| 101 | $label = &make_label($_); |
| 102 | if ($. == 1) { |
| 103 | $toplabel = $label; |
| 104 | if (/^(top|(re)?start|redo|begin(ning)|again|input)$/i) { |
| 105 | $_ = <>; |
| 106 | redo LINE; # Never referenced, so delete it if not a comment. |
| 107 | } |
| 108 | } |
| 109 | $_ = "$label:"; |
| 110 | if ($lastlinewaslabel++) { |
| 111 | $indent += 4; |
| 112 | print BODY &tab, ";\n"; |
| 113 | $indent -= 4; |
| 114 | } |
| 115 | if ($indent >= 2) { |
| 116 | $indent -= 2; |
| 117 | $indmod = 2; |
| 118 | } |
| 119 | next; |
| 120 | } else { |
| 121 | $lastlinewaslabel = ''; |
| 122 | } |
| 123 | |
| 124 | # Look for one or two address clauses |
| 125 | |
| 126 | $addr1 = ''; |
| 127 | $addr2 = ''; |
| 128 | if (s/^([0-9]+)//) { |
| 129 | $addr1 = "$1"; |
| 130 | $addr1 = "\$. == $addr1" unless /^,/; |
| 131 | } |
| 132 | elsif (s/^\$//) { |
| 133 | $addr1 = 'eof()'; |
| 134 | } |
| 135 | elsif (s|^/||) { |
| 136 | $addr1 = &fetchpat('/'); |
| 137 | } |
| 138 | if (s/^,//) { |
| 139 | if (s/^([0-9]+)//) { |
| 140 | $addr2 = "$1"; |
| 141 | } elsif (s/^\$//) { |
| 142 | $addr2 = "eof()"; |
| 143 | } elsif (s|^/||) { |
| 144 | $addr2 = &fetchpat('/'); |
| 145 | } else { |
| 146 | &Die("Invalid second address at line $.\n"); |
| 147 | } |
| 148 | if ($addr2 =~ /^\d+$/) { |
| 149 | $addr1 .= "..$addr2"; |
| 150 | } |
| 151 | else { |
| 152 | $addr1 .= "...$addr2"; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | # Now we check for metacommands {, }, and ! and worry |
| 157 | # about indentation. |
| 158 | |
| 159 | s/^[ \t]+//; |
| 160 | # a { to keep vi happy |
| 161 | if ($_ eq '}') { |
| 162 | $indent -= 4; |
| 163 | next; |
| 164 | } |
| 165 | if (s/^!//) { |
| 166 | $if = 'unless'; |
| 167 | $else = "$r else $l\n"; |
| 168 | } else { |
| 169 | $if = 'if'; |
| 170 | $else = ''; |
| 171 | } |
| 172 | if (s/^{//) { # a } to keep vi happy |
| 173 | $indmod = 4; |
| 174 | $redo = $_; |
| 175 | $_ = ''; |
| 176 | $rmaybe = ''; |
| 177 | } else { |
| 178 | $rmaybe = "\n$r"; |
| 179 | if ($addr2 || $addr1) { |
| 180 | $space = ' ' x $shiftwidth; |
| 181 | } else { |
| 182 | $space = ''; |
| 183 | } |
| 184 | $_ = &transmogrify(); |
| 185 | } |
| 186 | |
| 187 | # See if we can optimize to modifier form. |
| 188 | |
| 189 | if ($addr1) { |
| 190 | if ($_ !~ /[\n{}]/ && $rmaybe && !$change && |
| 191 | $_ !~ / if / && $_ !~ / unless /) { |
| 192 | s/;$/ $if $addr1;/; |
| 193 | $_ = substr($_,$shiftwidth,1000); |
| 194 | } else { |
| 195 | $_ = "$if ($addr1) $l\n$change$_$rmaybe"; |
| 196 | } |
| 197 | $change = ''; |
| 198 | next LINE; |
| 199 | } |
| 200 | } continue { |
| 201 | @lines = split(/\n/,$_); |
| 202 | for (@lines) { |
| 203 | unless (s/^ *<<--//) { |
| 204 | print BODY &tab; |
| 205 | } |
| 206 | print BODY $_, "\n"; |
| 207 | } |
| 208 | $indent += $indmod; |
| 209 | $indmod = 0; |
| 210 | if ($redo) { |
| 211 | $_ = $redo; |
| 212 | $redo = ''; |
| 213 | redo LINE; |
| 214 | } |
| 215 | } |
| 216 | if ($lastlinewaslabel++) { |
| 217 | $indent += 4; |
| 218 | print BODY &tab, ";\n"; |
| 219 | $indent -= 4; |
| 220 | } |
| 221 | |
| 222 | if ($appendseen || $tseen || !$assumen) { |
| 223 | $printit++ if $dseen || (!$assumen && !$assumep); |
| 224 | print BODY &q(<<'EOT'); |
| 225 | : #ifdef SAWNEXT |
| 226 | : } |
| 227 | : continue { |
| 228 | : #endif |
| 229 | : #ifdef PRINTIT |
| 230 | : #ifdef DSEEN |
| 231 | : #ifdef ASSUMEP |
| 232 | : print if $printit++; |
| 233 | : #else |
| 234 | : if ($printit) |
| 235 | : { print; } |
| 236 | : else |
| 237 | : { $printit++ unless $nflag; } |
| 238 | : #endif |
| 239 | : #else |
| 240 | : print if $printit; |
| 241 | : #endif |
| 242 | : #else |
| 243 | : print; |
| 244 | : #endif |
| 245 | : #ifdef TSEEN |
| 246 | : $tflag = 0; |
| 247 | : #endif |
| 248 | : #ifdef APPENDSEEN |
| 249 | : if ($atext) { chop $atext; print $atext; $atext = ''; } |
| 250 | : #endif |
| 251 | EOT |
| 252 | |
| 253 | print BODY &q(<<'EOT'); |
| 254 | : } |
| 255 | EOT |
| 256 | } |
| 257 | |
| 258 | close BODY; |
| 259 | |
| 260 | unless ($debug) { |
| 261 | open(HEAD,">/tmp/sperl2$$.c") |
| 262 | || &Die("Can't open temp file 2: $!\n"); |
| 263 | print HEAD "#define PRINTIT\n" if $printit; |
| 264 | print HEAD "#define APPENDSEEN\n" if $appendseen; |
| 265 | print HEAD "#define TSEEN\n" if $tseen; |
| 266 | print HEAD "#define DSEEN\n" if $dseen; |
| 267 | print HEAD "#define ASSUMEN\n" if $assumen; |
| 268 | print HEAD "#define ASSUMEP\n" if $assumep; |
| 269 | print HEAD "#define TOPLABEL\n" if $toplabel; |
| 270 | print HEAD "#define SAWNEXT\n" if $sawnext; |
| 271 | if ($opens) {print HEAD "$opens\n";} |
| 272 | open(BODY,"/tmp/sperl$$") |
| 273 | || &Die("Can't reopen temp file: $!\n"); |
| 274 | while (<BODY>) { |
| 275 | print HEAD $_; |
| 276 | } |
| 277 | close HEAD; |
| 278 | |
| 279 | print &q(<<"EOT"); |
| 280 | : #!$bin/perl |
| 281 | : eval 'exec $bin/perl -S \$0 \${1+"\$@"}' |
| 282 | : if \$running_under_some_shell; |
| 283 | : |
| 284 | EOT |
| 285 | open(BODY,"cc -E /tmp/sperl2$$.c |") || |
| 286 | &Die("Can't reopen temp file: $!\n"); |
| 287 | while (<BODY>) { |
| 288 | /^# [0-9]/ && next; |
| 289 | /^[ \t]*$/ && next; |
| 290 | s/^<><>//; |
| 291 | print; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | &Cleanup; |
| 296 | exit; |
| 297 | |
| 298 | sub Cleanup { |
| 299 | chdir "/tmp"; |
| 300 | unlink "sperl$$", "sperl2$$", "sperl2$$.c"; |
| 301 | } |
| 302 | sub Die { |
| 303 | &Cleanup; |
| 304 | die $_[0]; |
| 305 | } |
| 306 | sub tab { |
| 307 | "\t" x ($indent / 8) . ' ' x ($indent % 8); |
| 308 | } |
| 309 | sub make_filehandle { |
| 310 | local($_) = $_[0]; |
| 311 | local($fname) = $_; |
| 312 | if (!$seen{$fname}) { |
| 313 | $_ = "FH_" . $_ if /^\d/; |
| 314 | s/[^a-zA-Z0-9]/_/g; |
| 315 | s/^_*//; |
| 316 | $_ = "\U$_"; |
| 317 | if ($fhseen{$_}) { |
| 318 | for ($tmp = "a"; $fhseen{"$_$tmp"}; $a++) {} |
| 319 | $_ .= $tmp; |
| 320 | } |
| 321 | $fhseen{$_} = 1; |
| 322 | $opens .= &q(<<"EOT"); |
| 323 | : open($_, '>$fname') || die "Can't create $fname: \$!"; |
| 324 | EOT |
| 325 | $seen{$fname} = $_; |
| 326 | } |
| 327 | $seen{$fname}; |
| 328 | } |
| 329 | |
| 330 | sub make_label { |
| 331 | local($label) = @_; |
| 332 | $label =~ s/[^a-zA-Z0-9]/_/g; |
| 333 | if ($label =~ /^[0-9_]/) { $label = 'L' . $label; } |
| 334 | $label = substr($label,0,8); |
| 335 | |
| 336 | # Could be a reserved word, so capitalize it. |
| 337 | substr($label,0,1) =~ y/a-z/A-Z/ |
| 338 | if $label =~ /^[a-z]/; |
| 339 | |
| 340 | $label; |
| 341 | } |
| 342 | |
| 343 | sub transmogrify { |
| 344 | { # case |
| 345 | if (/^d/) { |
| 346 | $dseen++; |
| 347 | chop($_ = &q(<<'EOT')); |
| 348 | : <<--#ifdef PRINTIT |
| 349 | : $printit = 0; |
| 350 | : <<--#endif |
| 351 | : next LINE; |
| 352 | EOT |
| 353 | $sawnext++; |
| 354 | next; |
| 355 | } |
| 356 | |
| 357 | if (/^n/) { |
| 358 | chop($_ = &q(<<'EOT')); |
| 359 | : <<--#ifdef PRINTIT |
| 360 | : <<--#ifdef DSEEN |
| 361 | : <<--#ifdef ASSUMEP |
| 362 | : print if $printit++; |
| 363 | : <<--#else |
| 364 | : if ($printit) |
| 365 | : { print; } |
| 366 | : else |
| 367 | : { $printit++ unless $nflag; } |
| 368 | : <<--#endif |
| 369 | : <<--#else |
| 370 | : print if $printit; |
| 371 | : <<--#endif |
| 372 | : <<--#else |
| 373 | : print; |
| 374 | : <<--#endif |
| 375 | : <<--#ifdef APPENDSEEN |
| 376 | : if ($atext) {chop $atext; print $atext; $atext = '';} |
| 377 | : <<--#endif |
| 378 | : $_ = <>; |
| 379 | : chop; |
| 380 | : <<--#ifdef TSEEN |
| 381 | : $tflag = 0; |
| 382 | : <<--#endif |
| 383 | EOT |
| 384 | next; |
| 385 | } |
| 386 | |
| 387 | if (/^a/) { |
| 388 | $appendseen++; |
| 389 | $command = $space . "\$atext .= <<'End_Of_Text';\n<<--"; |
| 390 | $lastline = 0; |
| 391 | while (<>) { |
| 392 | s/^[ \t]*//; |
| 393 | s/^[\\]//; |
| 394 | unless (s|\\$||) { $lastline = 1;} |
| 395 | s/^([ \t]*\n)/<><>$1/; |
| 396 | $command .= $_; |
| 397 | $command .= '<<--'; |
| 398 | last if $lastline; |
| 399 | } |
| 400 | $_ = $command . "End_Of_Text"; |
| 401 | last; |
| 402 | } |
| 403 | |
| 404 | if (/^[ic]/) { |
| 405 | if (/^c/) { $change = 1; } |
| 406 | $addr1 = 1 if $addr1 eq ''; |
| 407 | $addr1 = '$iter = (' . $addr1 . ')'; |
| 408 | $command = $space . |
| 409 | " if (\$iter == 1) { print <<'End_Of_Text'; }\n<<--"; |
| 410 | $lastline = 0; |
| 411 | while (<>) { |
| 412 | s/^[ \t]*//; |
| 413 | s/^[\\]//; |
| 414 | unless (s/\\$//) { $lastline = 1;} |
| 415 | s/'/\\'/g; |
| 416 | s/^([ \t]*\n)/<><>$1/; |
| 417 | $command .= $_; |
| 418 | $command .= '<<--'; |
| 419 | last if $lastline; |
| 420 | } |
| 421 | $_ = $command . "End_Of_Text"; |
| 422 | if ($change) { |
| 423 | $dseen++; |
| 424 | $change = "$_\n"; |
| 425 | chop($_ = &q(<<"EOT")); |
| 426 | : <<--#ifdef PRINTIT |
| 427 | : $space\$printit = 0; |
| 428 | : <<--#endif |
| 429 | : ${space}next LINE; |
| 430 | EOT |
| 431 | $sawnext++; |
| 432 | } |
| 433 | last; |
| 434 | } |
| 435 | |
| 436 | if (/^s/) { |
| 437 | $delim = substr($_,1,1); |
| 438 | $len = length($_); |
| 439 | $repl = $end = 0; |
| 440 | $inbracket = 0; |
| 441 | for ($i = 2; $i < $len; $i++) { |
| 442 | $c = substr($_,$i,1); |
| 443 | if ($c eq $delim) { |
| 444 | if ($inbracket) { |
| 445 | substr($_, $i, 0) = '\\'; |
| 446 | $i++; |
| 447 | $len++; |
| 448 | } |
| 449 | else { |
| 450 | if ($repl) { |
| 451 | $end = $i; |
| 452 | last; |
| 453 | } else { |
| 454 | $repl = $i; |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | elsif ($c eq '\\') { |
| 459 | $i++; |
| 460 | if ($i >= $len) { |
| 461 | $_ .= 'n'; |
| 462 | $_ .= <>; |
| 463 | $len = length($_); |
| 464 | $_ = substr($_,0,--$len); |
| 465 | } |
| 466 | elsif (substr($_,$i,1) =~ /^[n]$/) { |
| 467 | ; |
| 468 | } |
| 469 | elsif (!$repl && |
| 470 | substr($_,$i,1) =~ /^[(){}\w]$/) { |
| 471 | $i--; |
| 472 | $len--; |
| 473 | substr($_, $i, 1) = ''; |
| 474 | } |
| 475 | elsif (!$repl && |
| 476 | substr($_,$i,1) =~ /^[<>]$/) { |
| 477 | substr($_,$i,1) = 'b'; |
| 478 | } |
| 479 | elsif ($repl && substr($_,$i,1) =~ /^\d$/) { |
| 480 | substr($_,$i-1,1) = '$'; |
| 481 | } |
| 482 | } |
| 483 | elsif ($c eq '&' && $repl) { |
| 484 | substr($_, $i, 0) = '$'; |
| 485 | $i++; |
| 486 | $len++; |
| 487 | } |
| 488 | elsif ($c eq '$' && $repl) { |
| 489 | substr($_, $i, 0) = '\\'; |
| 490 | $i++; |
| 491 | $len++; |
| 492 | } |
| 493 | elsif ($c eq '[' && !$repl) { |
| 494 | $i++ if substr($_,$i,1) eq '^'; |
| 495 | $i++ if substr($_,$i,1) eq ']'; |
| 496 | $inbracket = 1; |
| 497 | } |
| 498 | elsif ($c eq ']') { |
| 499 | $inbracket = 0; |
| 500 | } |
| 501 | elsif ($c eq "\t") { |
| 502 | substr($_, $i, 1) = '\\t'; |
| 503 | $i++; |
| 504 | $len++; |
| 505 | } |
| 506 | elsif (!$repl && index("()+",$c) >= 0) { |
| 507 | substr($_, $i, 0) = '\\'; |
| 508 | $i++; |
| 509 | $len++; |
| 510 | } |
| 511 | } |
| 512 | &Die("Malformed substitution at line $.\n") |
| 513 | unless $end; |
| 514 | $pat = substr($_, 0, $repl + 1); |
| 515 | $repl = substr($_, $repl+1, $end-$repl-1); |
| 516 | $end = substr($_, $end + 1, 1000); |
| 517 | &simplify($pat); |
| 518 | $dol = '$'; |
| 519 | $subst = "$pat$repl$delim"; |
| 520 | $cmd = ''; |
| 521 | while ($end) { |
| 522 | if ($end =~ s/^g//) { |
| 523 | $subst .= 'g'; |
| 524 | next; |
| 525 | } |
| 526 | if ($end =~ s/^p//) { |
| 527 | $cmd .= ' && (print)'; |
| 528 | next; |
| 529 | } |
| 530 | if ($end =~ s/^w[ \t]*//) { |
| 531 | $fh = &make_filehandle($end); |
| 532 | $cmd .= " && (print $fh \$_)"; |
| 533 | $end = ''; |
| 534 | next; |
| 535 | } |
| 536 | &Die("Unrecognized substitution command". |
| 537 | "($end) at line $.\n"); |
| 538 | } |
| 539 | chop ($_ = &q(<<"EOT")); |
| 540 | : <<--#ifdef TSEEN |
| 541 | : $subst && \$tflag++$cmd; |
| 542 | : <<--#else |
| 543 | : $subst$cmd; |
| 544 | : <<--#endif |
| 545 | EOT |
| 546 | next; |
| 547 | } |
| 548 | |
| 549 | if (/^p/) { |
| 550 | $_ = 'print;'; |
| 551 | next; |
| 552 | } |
| 553 | |
| 554 | if (/^w/) { |
| 555 | s/^w[ \t]*//; |
| 556 | $fh = &make_filehandle($_); |
| 557 | $_ = "print $fh \$_;"; |
| 558 | next; |
| 559 | } |
| 560 | |
| 561 | if (/^r/) { |
| 562 | $appendseen++; |
| 563 | s/^r[ \t]*//; |
| 564 | $file = $_; |
| 565 | $_ = "\$atext .= `cat $file 2>/dev/null`;"; |
| 566 | next; |
| 567 | } |
| 568 | |
| 569 | if (/^P/) { |
| 570 | $_ = 'print $1 if /^(.*)/;'; |
| 571 | next; |
| 572 | } |
| 573 | |
| 574 | if (/^D/) { |
| 575 | chop($_ = &q(<<'EOT')); |
| 576 | : s/^.*\n?//; |
| 577 | : redo LINE if $_; |
| 578 | : next LINE; |
| 579 | EOT |
| 580 | $sawnext++; |
| 581 | next; |
| 582 | } |
| 583 | |
| 584 | if (/^N/) { |
| 585 | chop($_ = &q(<<'EOT')); |
| 586 | : $_ .= "\n"; |
| 587 | : $len1 = length; |
| 588 | : $_ .= <>; |
| 589 | : chop if $len1 < length; |
| 590 | : <<--#ifdef TSEEN |
| 591 | : $tflag = 0; |
| 592 | : <<--#endif |
| 593 | EOT |
| 594 | next; |
| 595 | } |
| 596 | |
| 597 | if (/^h/) { |
| 598 | $_ = '$hold = $_;'; |
| 599 | next; |
| 600 | } |
| 601 | |
| 602 | if (/^H/) { |
| 603 | $_ = '$hold .= "\n"; $hold .= $_;'; |
| 604 | next; |
| 605 | } |
| 606 | |
| 607 | if (/^g/) { |
| 608 | $_ = '$_ = $hold;'; |
| 609 | next; |
| 610 | } |
| 611 | |
| 612 | if (/^G/) { |
| 613 | $_ = '$_ .= "\n"; $_ .= $hold;'; |
| 614 | next; |
| 615 | } |
| 616 | |
| 617 | if (/^x/) { |
| 618 | $_ = '($_, $hold) = ($hold, $_);'; |
| 619 | next; |
| 620 | } |
| 621 | |
| 622 | if (/^b$/) { |
| 623 | $_ = 'next LINE;'; |
| 624 | $sawnext++; |
| 625 | next; |
| 626 | } |
| 627 | |
| 628 | if (/^b/) { |
| 629 | s/^b[ \t]*//; |
| 630 | $lab = &make_label($_); |
| 631 | if ($lab eq $toplabel) { |
| 632 | $_ = 'redo LINE;'; |
| 633 | } else { |
| 634 | $_ = "goto $lab;"; |
| 635 | } |
| 636 | next; |
| 637 | } |
| 638 | |
| 639 | if (/^t$/) { |
| 640 | $_ = 'next LINE if $tflag;'; |
| 641 | $sawnext++; |
| 642 | $tseen++; |
| 643 | next; |
| 644 | } |
| 645 | |
| 646 | if (/^t/) { |
| 647 | s/^t[ \t]*//; |
| 648 | $lab = &make_label($_); |
| 649 | $_ = q/if ($tflag) {$tflag = 0; /; |
| 650 | if ($lab eq $toplabel) { |
| 651 | $_ .= 'redo LINE;}'; |
| 652 | } else { |
| 653 | $_ .= "goto $lab;}"; |
| 654 | } |
| 655 | $tseen++; |
| 656 | next; |
| 657 | } |
| 658 | |
| 659 | if (/^y/) { |
| 660 | s/abcdefghijklmnopqrstuvwxyz/a-z/g; |
| 661 | s/ABCDEFGHIJKLMNOPQRSTUVWXYZ/A-Z/g; |
| 662 | s/abcdef/a-f/g; |
| 663 | s/ABCDEF/A-F/g; |
| 664 | s/0123456789/0-9/g; |
| 665 | s/01234567/0-7/g; |
| 666 | $_ .= ';'; |
| 667 | } |
| 668 | |
| 669 | if (/^=/) { |
| 670 | $_ = 'print $.;'; |
| 671 | next; |
| 672 | } |
| 673 | |
| 674 | if (/^q/) { |
| 675 | chop($_ = &q(<<'EOT')); |
| 676 | : close(ARGV); |
| 677 | : @ARGV = (); |
| 678 | : next LINE; |
| 679 | EOT |
| 680 | $sawnext++; |
| 681 | next; |
| 682 | } |
| 683 | } continue { |
| 684 | if ($space) { |
| 685 | s/^/$space/; |
| 686 | s/(\n)(.)/$1$space$2/g; |
| 687 | } |
| 688 | last; |
| 689 | } |
| 690 | $_; |
| 691 | } |
| 692 | |
| 693 | sub fetchpat { |
| 694 | local($outer) = @_; |
| 695 | local($addr) = $outer; |
| 696 | local($inbracket); |
| 697 | local($prefix,$delim,$ch); |
| 698 | |
| 699 | # Process pattern one potential delimiter at a time. |
| 700 | |
| 701 | DELIM: while (s#^([^\]+(|)[\\/]*)([]+(|)[\\/])##) { |
| 702 | $prefix = $1; |
| 703 | $delim = $2; |
| 704 | if ($delim eq '\\') { |
| 705 | s/(.)//; |
| 706 | $ch = $1; |
| 707 | $delim = '' if $ch =~ /^[(){}A-Za-mo-z]$/; |
| 708 | $ch = 'b' if $ch =~ /^[<>]$/; |
| 709 | $delim .= $ch; |
| 710 | } |
| 711 | elsif ($delim eq '[') { |
| 712 | $inbracket = 1; |
| 713 | s/^\^// && ($delim .= '^'); |
| 714 | s/^]// && ($delim .= ']'); |
| 715 | } |
| 716 | elsif ($delim eq ']') { |
| 717 | $inbracket = 0; |
| 718 | } |
| 719 | elsif ($inbracket || $delim ne $outer) { |
| 720 | $delim = '\\' . $delim; |
| 721 | } |
| 722 | $addr .= $prefix; |
| 723 | $addr .= $delim; |
| 724 | if ($delim eq $outer && !$inbracket) { |
| 725 | last DELIM; |
| 726 | } |
| 727 | } |
| 728 | $addr =~ s/\t/\\t/g; |
| 729 | &simplify($addr); |
| 730 | $addr; |
| 731 | } |
| 732 | |
| 733 | sub q { |
| 734 | local($string) = @_; |
| 735 | local($*) = 1; |
| 736 | $string =~ s/^:\t?//g; |
| 737 | $string; |
| 738 | } |
| 739 | |
| 740 | sub simplify { |
| 741 | $_[0] =~ s/_a-za-z0-9/\\w/ig; |
| 742 | $_[0] =~ s/a-z_a-z0-9/\\w/ig; |
| 743 | $_[0] =~ s/a-za-z_0-9/\\w/ig; |
| 744 | $_[0] =~ s/a-za-z0-9_/\\w/ig; |
| 745 | $_[0] =~ s/_0-9a-za-z/\\w/ig; |
| 746 | $_[0] =~ s/0-9_a-za-z/\\w/ig; |
| 747 | $_[0] =~ s/0-9a-z_a-z/\\w/ig; |
| 748 | $_[0] =~ s/0-9a-za-z_/\\w/ig; |
| 749 | $_[0] =~ s/\[\\w\]/\\w/g; |
| 750 | $_[0] =~ s/\[^\\w\]/\\W/g; |
| 751 | $_[0] =~ s/\[0-9\]/\\d/g; |
| 752 | $_[0] =~ s/\[^0-9\]/\\D/g; |
| 753 | $_[0] =~ s/\\d\\d\*/\\d+/g; |
| 754 | $_[0] =~ s/\\D\\D\*/\\D+/g; |
| 755 | $_[0] =~ s/\\w\\w\*/\\w+/g; |
| 756 | $_[0] =~ s/\\t\\t\*/\\t+/g; |
| 757 | $_[0] =~ s/(\[.[^]]*\])\1\*/$1+/g; |
| 758 | $_[0] =~ s/([\w\s!@#%^&-=,:;'"])\1\*/$1+/g; |
| 759 | } |
| 760 | |
projects / p5sagit/p5-mst-13.2.git / blame