| Commit | Line | Data |
|---|
| fe14fcc3 |
1 | package DB; |
| 2 | |
| 3 | # modified Perl debugger, to be run from Emacs in perldb-mode |
| 4 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
| 5 | |
| 79072805 |
6 | $header = '$RCSfile: perldb.pl,v $$Revision: 4.1 $$Date: 92/08/07 17:20:59 $'; |
| fe14fcc3 |
7 | # |
| 8 | # This file is automatically included if you do perl -d. |
| 9 | # It's probably not useful to include this yourself. |
| 10 | # |
| 11 | # Perl supplies the values for @line and %sub. It effectively inserts |
| 12 | # a do DB'DB(<linenum>); in front of every place that can |
| 13 | # have a breakpoint. It also inserts a do 'perldb.pl' before the first line. |
| 14 | # |
| 15 | # $Log: perldb.pl,v $ |
| 79072805 |
16 | # Revision 4.1 92/08/07 17:20:59 lwall |
| 17 | # Stage 6 Snapshot |
| 18 | # |
| fe14fcc3 |
19 | # Revision 4.0 91/03/20 01:18:58 lwall |
| 20 | # 4.0 baseline. |
| 21 | # |
| 22 | # Revision 3.0.1.6 91/01/11 18:08:58 lwall |
| 23 | # patch42: @_ couldn't be accessed from debugger |
| 24 | # |
| 25 | # Revision 3.0.1.5 90/11/10 01:40:26 lwall |
| 26 | # patch38: the debugger wouldn't stop correctly or do action routines |
| 27 | # |
| 28 | # Revision 3.0.1.4 90/10/15 17:40:38 lwall |
| 29 | # patch29: added caller |
| 30 | # patch29: the debugger now understands packages and evals |
| 31 | # patch29: scripts now run at almost full speed under the debugger |
| 32 | # patch29: more variables are settable from debugger |
| 33 | # |
| 34 | # Revision 3.0.1.3 90/08/09 04:00:58 lwall |
| 35 | # patch19: debugger now allows continuation lines |
| 36 | # patch19: debugger can now dump lists of variables |
| 37 | # patch19: debugger can now add aliases easily from prompt |
| 38 | # |
| 39 | # Revision 3.0.1.2 90/03/12 16:39:39 lwall |
| 40 | # patch13: perl -d didn't format stack traces of *foo right |
| 41 | # patch13: perl -d wiped out scalar return values of subroutines |
| 42 | # |
| 43 | # Revision 3.0.1.1 89/10/26 23:14:02 lwall |
| 44 | # patch1: RCS expanded an unintended $Header in lib/perldb.pl |
| 45 | # |
| 46 | # Revision 3.0 89/10/18 15:19:46 lwall |
| 47 | # 3.0 baseline |
| 48 | # |
| 49 | # Revision 2.0 88/06/05 00:09:45 root |
| 50 | # Baseline version 2.0. |
| 51 | # |
| 52 | # |
| 53 | |
| 54 | open(IN, "</dev/tty") || open(IN, "<&STDIN"); # so we don't dingle stdin |
| 55 | open(OUT,">/dev/tty") || open(OUT, ">&STDOUT"); # so we don't dongle stdout |
| 56 | select(OUT); |
| 57 | $| = 1; # for DB'OUT |
| 58 | select(STDOUT); |
| 59 | $| = 1; # for real STDOUT |
| 60 | $sub = ''; |
| 61 | |
| 62 | # Is Perl being run from Emacs? |
| 63 | $emacs = $main'ARGV[$[] eq '-emacs'; |
| 64 | shift(@main'ARGV) if $emacs; |
| 65 | |
| 66 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
| 67 | print OUT "\nLoading DB routines from $header\n\nEnter h for help.\n\n"; |
| 68 | |
| 69 | sub DB { |
| 70 | &save; |
| 71 | ($package, $filename, $line) = caller; |
| 72 | $usercontext = '($@, $!, $[, $,, $/, $\) = @saved;' . |
| 73 | "package $package;"; # this won't let them modify, alas |
| 74 | local(*dbline) = "_<$filename"; |
| 75 | $max = $#dbline; |
| 76 | if (($stop,$action) = split(/\0/,$dbline{$line})) { |
| 77 | if ($stop eq '1') { |
| 78 | $signal |= 1; |
| 79 | } |
| 80 | else { |
| 81 | $evalarg = "\$DB'signal |= do {$stop;}"; &eval; |
| 82 | $dbline{$line} =~ s/;9($|\0)/$1/; |
| 83 | } |
| 84 | } |
| 85 | if ($single || $trace || $signal) { |
| 86 | if ($emacs) { |
| 87 | print OUT "\032\032$filename:$line:0\n"; |
| 88 | } else { |
| 89 | print OUT "$package'" unless $sub =~ /'/; |
| 90 | print OUT "$sub($filename:$line):\t",$dbline[$line]; |
| 91 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { |
| 92 | last if $dbline[$i] =~ /^\s*(}|#|\n)/; |
| 93 | print OUT "$sub($filename:$i):\t",$dbline[$i]; |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | $evalarg = $action, &eval if $action; |
| 98 | if ($single || $signal) { |
| 99 | $evalarg = $pre, &eval if $pre; |
| 100 | print OUT $#stack . " levels deep in subroutine calls!\n" |
| 101 | if $single & 4; |
| 102 | $start = $line; |
| 103 | while ((print OUT " DB<", $#hist+1, "> "), $cmd=&gets) { |
| 104 | $single = 0; |
| 105 | $signal = 0; |
| 106 | $cmd eq '' && exit 0; |
| 107 | chop($cmd); |
| 108 | $cmd =~ s/\\$// && do { |
| 109 | print OUT " cont: "; |
| 110 | $cmd .= &gets; |
| 111 | redo; |
| 112 | }; |
| 113 | $cmd =~ /^q$/ && exit 0; |
| 114 | $cmd =~ /^$/ && ($cmd = $laststep); |
| 115 | push(@hist,$cmd) if length($cmd) > 1; |
| 116 | ($i) = split(/\s+/,$cmd); |
| 117 | eval "\$cmd =~ $alias{$i}", print OUT $@ if $alias{$i}; |
| 118 | $cmd =~ /^h$/ && do { |
| 119 | print OUT " |
| 120 | T Stack trace. |
| 121 | s Single step. |
| 122 | n Next, steps over subroutine calls. |
| 123 | r Return from current subroutine. |
| 124 | c [line] Continue; optionally inserts a one-time-only breakpoint |
| 125 | at the specified line. |
| 126 | <CR> Repeat last n or s. |
| 127 | l min+incr List incr+1 lines starting at min. |
| 128 | l min-max List lines. |
| 129 | l line List line; |
| 130 | l List next window. |
| 131 | - List previous window. |
| 132 | w line List window around line. |
| 133 | l subname List subroutine. |
| 134 | f filename Switch to filename. |
| 135 | /pattern/ Search forwards for pattern; final / is optional. |
| 136 | ?pattern? Search backwards for pattern. |
| 137 | L List breakpoints and actions. |
| 138 | S List subroutine names. |
| 139 | t Toggle trace mode. |
| 140 | b [line] [condition] |
| 141 | Set breakpoint; line defaults to the current execution line; |
| 142 | condition breaks if it evaluates to true, defaults to \'1\'. |
| 143 | b subname [condition] |
| 144 | Set breakpoint at first line of subroutine. |
| 145 | d [line] Delete breakpoint. |
| 146 | D Delete all breakpoints. |
| 147 | a [line] command |
| 148 | Set an action to be done before the line is executed. |
| 149 | Sequence is: check for breakpoint, print line if necessary, |
| 150 | do action, prompt user if breakpoint or step, evaluate line. |
| 151 | A Delete all actions. |
| 152 | V [pkg [vars]] List some (default all) variables in package (default current). |
| 153 | X [vars] Same as \"V currentpackage [vars]\". |
| 154 | < command Define command before prompt. |
| 155 | | command Define command after prompt. |
| 156 | ! number Redo command (default previous command). |
| 157 | ! -number Redo number\'th to last command. |
| 158 | H -number Display last number commands (default all). |
| 159 | q or ^D Quit. |
| 160 | p expr Same as \"print DB'OUT expr\" in current package. |
| 161 | = [alias value] Define a command alias, or list current aliases. |
| 162 | command Execute as a perl statement in current package. |
| 163 | |
| 164 | "; |
| 165 | next; }; |
| 166 | $cmd =~ /^t$/ && do { |
| 167 | $trace = !$trace; |
| 168 | print OUT "Trace = ".($trace?"on":"off")."\n"; |
| 169 | next; }; |
| 170 | $cmd =~ /^S$/ && do { |
| 171 | foreach $subname (sort(keys %sub)) { |
| 172 | print OUT $subname,"\n"; |
| 173 | } |
| 174 | next; }; |
| 175 | $cmd =~ s/^X\b/V $package/; |
| 176 | $cmd =~ /^V$/ && do { |
| 177 | $cmd = 'V $package'; }; |
| 178 | $cmd =~ /^V\s*(\S+)\s*(.*)/ && do { |
| 179 | $packname = $1; |
| 180 | @vars = split(' ',$2); |
| 181 | do 'dumpvar.pl' unless defined &main'dumpvar; |
| 182 | if (defined &main'dumpvar) { |
| 183 | &main'dumpvar($packname,@vars); |
| 184 | } |
| 185 | else { |
| 186 | print DB'OUT "dumpvar.pl not available.\n"; |
| 187 | } |
| 188 | next; }; |
| 189 | $cmd =~ /^f\s*(.*)/ && do { |
| 190 | $file = $1; |
| 191 | if (!$file) { |
| 192 | print OUT "The old f command is now the r command.\n"; |
| 193 | print OUT "The new f command switches filenames.\n"; |
| 194 | next; |
| 195 | } |
| 196 | if (!defined $_main{'_<' . $file}) { |
| 197 | if (($try) = grep(m#^_<.*$file#, keys %_main)) { |
| 198 | $file = substr($try,2); |
| 199 | print "\n$file:\n"; |
| 200 | } |
| 201 | } |
| 202 | if (!defined $_main{'_<' . $file}) { |
| 203 | print OUT "There's no code here anything matching $file.\n"; |
| 204 | next; |
| 205 | } |
| 206 | elsif ($file ne $filename) { |
| 207 | *dbline = "_<$file"; |
| 208 | $max = $#dbline; |
| 209 | $filename = $file; |
| 210 | $start = 1; |
| 211 | $cmd = "l"; |
| 212 | } }; |
| 213 | $cmd =~ /^l\s*(['A-Za-z_]['\w]*)/ && do { |
| 214 | $subname = $1; |
| 215 | $subname = "main'" . $subname unless $subname =~ /'/; |
| 216 | $subname = "main" . $subname if substr($subname,0,1) eq "'"; |
| 217 | ($file,$subrange) = split(/:/,$sub{$subname}); |
| 218 | if ($file ne $filename) { |
| 219 | *dbline = "_<$file"; |
| 220 | $max = $#dbline; |
| 221 | $filename = $file; |
| 222 | } |
| 223 | if ($subrange) { |
| 224 | if (eval($subrange) < -$window) { |
| 225 | $subrange =~ s/-.*/+/; |
| 226 | } |
| 227 | $cmd = "l $subrange"; |
| 228 | } else { |
| 229 | print OUT "Subroutine $1 not found.\n"; |
| 230 | next; |
| 231 | } }; |
| 232 | $cmd =~ /^w\s*(\d*)$/ && do { |
| 233 | $incr = $window - 1; |
| 234 | $start = $1 if $1; |
| 235 | $start -= $preview; |
| 236 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 237 | $cmd =~ /^-$/ && do { |
| 238 | $incr = $window - 1; |
| 239 | $cmd = 'l ' . ($start-$window*2) . '+'; }; |
| 240 | $cmd =~ /^l$/ && do { |
| 241 | $incr = $window - 1; |
| 242 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 243 | $cmd =~ /^l\s*(\d*)\+(\d*)$/ && do { |
| 244 | $start = $1 if $1; |
| 245 | $incr = $2; |
| 246 | $incr = $window - 1 unless $incr; |
| 247 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 248 | $cmd =~ /^l\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
| 249 | $end = (!$2) ? $max : ($4 ? $4 : $2); |
| 250 | $end = $max if $end > $max; |
| 251 | $i = $2; |
| 252 | $i = $line if $i eq '.'; |
| 253 | $i = 1 if $i < 1; |
| 254 | if ($emacs) { |
| 255 | print OUT "\032\032$filename:$i:0\n"; |
| 256 | $i = $end; |
| 257 | } else { |
| 258 | for (; $i <= $end; $i++) { |
| 259 | print OUT "$i:\t", $dbline[$i]; |
| 260 | last if $signal; |
| 261 | } |
| 262 | } |
| 263 | $start = $i; # remember in case they want more |
| 264 | $start = $max if $start > $max; |
| 265 | next; }; |
| 266 | $cmd =~ /^D$/ && do { |
| 267 | print OUT "Deleting all breakpoints...\n"; |
| 268 | for ($i = 1; $i <= $max ; $i++) { |
| 269 | if (defined $dbline{$i}) { |
| 270 | $dbline{$i} =~ s/^[^\0]+//; |
| 271 | if ($dbline{$i} =~ s/^\0?$//) { |
| 272 | delete $dbline{$i}; |
| 273 | } |
| 274 | } |
| 275 | } |
| 276 | next; }; |
| 277 | $cmd =~ /^L$/ && do { |
| 278 | for ($i = 1; $i <= $max; $i++) { |
| 279 | if (defined $dbline{$i}) { |
| 280 | print OUT "$i:\t", $dbline[$i]; |
| 281 | ($stop,$action) = split(/\0/, $dbline{$i}); |
| 282 | print OUT " break if (", $stop, ")\n" |
| 283 | if $stop; |
| 284 | print OUT " action: ", $action, "\n" |
| 285 | if $action; |
| 286 | last if $signal; |
| 287 | } |
| 288 | } |
| 289 | next; }; |
| 290 | $cmd =~ /^b\s*(['A-Za-z_]['\w]*)\s*(.*)/ && do { |
| 291 | $subname = $1; |
| 292 | $cond = $2 || '1'; |
| 293 | $subname = "$package'" . $subname unless $subname =~ /'/; |
| 294 | $subname = "main" . $subname if substr($subname,0,1) eq "'"; |
| 295 | ($filename,$i) = split(/[:-]/, $sub{$subname}); |
| 296 | if ($i) { |
| 297 | *dbline = "_<$filename"; |
| 298 | ++$i while $dbline[$i] == 0 && $i < $#dbline; |
| 299 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
| 300 | } else { |
| 301 | print OUT "Subroutine $subname not found.\n"; |
| 302 | } |
| 303 | next; }; |
| 304 | $cmd =~ /^b\s*(\d*)\s*(.*)/ && do { |
| 305 | $i = ($1?$1:$line); |
| 306 | $cond = $2 || '1'; |
| 307 | if ($dbline[$i] == 0) { |
| 308 | print OUT "Line $i not breakable.\n"; |
| 309 | } else { |
| 310 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
| 311 | } |
| 312 | next; }; |
| 313 | $cmd =~ /^d\s*(\d+)?/ && do { |
| 314 | $i = ($1?$1:$line); |
| 315 | $dbline{$i} =~ s/^[^\0]*//; |
| 316 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 317 | next; }; |
| 318 | $cmd =~ /^A$/ && do { |
| 319 | for ($i = 1; $i <= $max ; $i++) { |
| 320 | if (defined $dbline{$i}) { |
| 321 | $dbline{$i} =~ s/\0[^\0]*//; |
| 322 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 323 | } |
| 324 | } |
| 325 | next; }; |
| 326 | $cmd =~ /^<\s*(.*)/ && do { |
| 327 | $pre = do action($1); |
| 328 | next; }; |
| 329 | $cmd =~ /^>\s*(.*)/ && do { |
| 330 | $post = do action($1); |
| 331 | next; }; |
| 332 | $cmd =~ /^a\s*(\d+)(\s+(.*))?/ && do { |
| 333 | $i = $1; |
| 334 | if ($dbline[$i] == 0) { |
| 335 | print OUT "Line $i may not have an action.\n"; |
| 336 | } else { |
| 337 | $dbline{$i} =~ s/\0[^\0]*//; |
| 338 | $dbline{$i} .= "\0" . do action($3); |
| 339 | } |
| 340 | next; }; |
| 341 | $cmd =~ /^n$/ && do { |
| 342 | $single = 2; |
| 343 | $laststep = $cmd; |
| 344 | last; }; |
| 345 | $cmd =~ /^s$/ && do { |
| 346 | $single = 1; |
| 347 | $laststep = $cmd; |
| 348 | last; }; |
| 349 | $cmd =~ /^c\s*(\d*)\s*$/ && do { |
| 350 | $i = $1; |
| 351 | if ($i) { |
| 352 | if ($dbline[$i] == 0) { |
| 353 | print OUT "Line $i not breakable.\n"; |
| 354 | next; |
| 355 | } |
| 356 | $dbline{$i} =~ s/(\0|$)/;9$1/; # add one-time-only b.p. |
| 357 | } |
| 358 | for ($i=0; $i <= $#stack; ) { |
| 359 | $stack[$i++] &= ~1; |
| 360 | } |
| 361 | last; }; |
| 362 | $cmd =~ /^r$/ && do { |
| 363 | $stack[$#stack] |= 2; |
| 364 | last; }; |
| 365 | $cmd =~ /^T$/ && do { |
| 366 | local($p,$f,$l,$s,$h,$a,@a,@sub); |
| 367 | for ($i = 1; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) { |
| 368 | @a = @args; |
| 369 | for (@a) { |
| 370 | if (/^StB\000/ && length($_) == length($_main{'_main'})) { |
| 371 | $_ = sprintf("%s",$_); |
| 372 | } |
| 373 | else { |
| 374 | s/'/\\'/g; |
| 375 | s/([^\0]*)/'$1'/ unless /^-?[\d.]+$/; |
| 376 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
| 377 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
| 378 | } |
| 379 | } |
| 380 | $w = $w ? '@ = ' : '$ = '; |
| 381 | $a = $h ? '(' . join(', ', @a) . ')' : ''; |
| 382 | push(@sub, "$w&$s$a from file $f line $l\n"); |
| 383 | last if $signal; |
| 384 | } |
| 385 | for ($i=0; $i <= $#sub; $i++) { |
| 386 | last if $signal; |
| 387 | print OUT $sub[$i]; |
| 388 | } |
| 389 | next; }; |
| 390 | $cmd =~ /^\/(.*)$/ && do { |
| 391 | $inpat = $1; |
| 392 | $inpat =~ s:([^\\])/$:$1:; |
| 393 | if ($inpat ne "") { |
| 394 | eval '$inpat =~ m'."\n$inpat\n"; |
| 395 | if ($@ ne "") { |
| 396 | print OUT "$@"; |
| 397 | next; |
| 398 | } |
| 399 | $pat = $inpat; |
| 400 | } |
| 401 | $end = $start; |
| 402 | eval ' |
| 403 | for (;;) { |
| 404 | ++$start; |
| 405 | $start = 1 if ($start > $max); |
| 406 | last if ($start == $end); |
| 407 | if ($dbline[$start] =~ m'."\n$pat\n".'i) { |
| 408 | if ($emacs) { |
| 409 | print OUT "\032\032$filename:$start:0\n"; |
| 410 | } else { |
| 411 | print OUT "$start:\t", $dbline[$start], "\n"; |
| 412 | } |
| 413 | last; |
| 414 | } |
| 415 | } '; |
| 416 | print OUT "/$pat/: not found\n" if ($start == $end); |
| 417 | next; }; |
| 418 | $cmd =~ /^\?(.*)$/ && do { |
| 419 | $inpat = $1; |
| 420 | $inpat =~ s:([^\\])\?$:$1:; |
| 421 | if ($inpat ne "") { |
| 422 | eval '$inpat =~ m'."\n$inpat\n"; |
| 423 | if ($@ ne "") { |
| 424 | print OUT "$@"; |
| 425 | next; |
| 426 | } |
| 427 | $pat = $inpat; |
| 428 | } |
| 429 | $end = $start; |
| 430 | eval ' |
| 431 | for (;;) { |
| 432 | --$start; |
| 433 | $start = $max if ($start <= 0); |
| 434 | last if ($start == $end); |
| 435 | if ($dbline[$start] =~ m'."\n$pat\n".'i) { |
| 436 | if ($emacs) { |
| 437 | print OUT "\032\032$filename:$start:0\n"; |
| 438 | } else { |
| 439 | print OUT "$start:\t", $dbline[$start], "\n"; |
| 440 | } |
| 441 | last; |
| 442 | } |
| 443 | } '; |
| 444 | print OUT "?$pat?: not found\n" if ($start == $end); |
| 445 | next; }; |
| 446 | $cmd =~ /^!+\s*(-)?(\d+)?$/ && do { |
| 447 | pop(@hist) if length($cmd) > 1; |
| 448 | $i = ($1?($#hist-($2?$2:1)):($2?$2:$#hist)); |
| 449 | $cmd = $hist[$i] . "\n"; |
| 450 | print OUT $cmd; |
| 451 | redo; }; |
| 452 | $cmd =~ /^!(.+)$/ && do { |
| 453 | $pat = "^$1"; |
| 454 | pop(@hist) if length($cmd) > 1; |
| 455 | for ($i = $#hist; $i; --$i) { |
| 456 | last if $hist[$i] =~ $pat; |
| 457 | } |
| 458 | if (!$i) { |
| 459 | print OUT "No such command!\n\n"; |
| 460 | next; |
| 461 | } |
| 462 | $cmd = $hist[$i] . "\n"; |
| 463 | print OUT $cmd; |
| 464 | redo; }; |
| 465 | $cmd =~ /^H\s*(-(\d+))?/ && do { |
| 466 | $end = $2?($#hist-$2):0; |
| 467 | $hist = 0 if $hist < 0; |
| 468 | for ($i=$#hist; $i>$end; $i--) { |
| 469 | print OUT "$i: ",$hist[$i],"\n" |
| 470 | unless $hist[$i] =~ /^.?$/; |
| 471 | }; |
| 472 | next; }; |
| 473 | $cmd =~ s/^p( .*)?$/print DB'OUT$1/; |
| 474 | $cmd =~ /^=/ && do { |
| 475 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { |
| 476 | $alias{$k}="s~$k~$v~"; |
| 477 | print OUT "$k = $v\n"; |
| 478 | } elsif ($cmd =~ /^=\s*$/) { |
| 479 | foreach $k (sort keys(%alias)) { |
| 480 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { |
| 481 | print OUT "$k = $v\n"; |
| 482 | } else { |
| 483 | print OUT "$k\t$alias{$k}\n"; |
| 484 | }; |
| 485 | }; |
| 486 | }; |
| 487 | next; }; |
| 488 | $evalarg = $cmd; &eval; |
| 489 | print OUT "\n"; |
| 490 | } |
| 491 | if ($post) { |
| 492 | $evalarg = $post; &eval; |
| 493 | } |
| 494 | } |
| 495 | ($@, $!, $[, $,, $/, $\) = @saved; |
| 496 | } |
| 497 | |
| 498 | sub save { |
| 499 | @saved = ($@, $!, $[, $,, $/, $\); |
| 500 | $[ = 0; $, = ""; $/ = "\n"; $\ = ""; |
| 501 | } |
| 502 | |
| 503 | # The following takes its argument via $evalarg to preserve current @_ |
| 504 | |
| 505 | sub eval { |
| 506 | eval "$usercontext $evalarg; &DB'save"; |
| 507 | print OUT $@; |
| 508 | } |
| 509 | |
| 510 | sub action { |
| 511 | local($action) = @_; |
| 512 | while ($action =~ s/\\$//) { |
| 513 | print OUT "+ "; |
| 514 | $action .= &gets; |
| 515 | } |
| 516 | $action; |
| 517 | } |
| 518 | |
| 519 | sub gets { |
| 520 | local($.); |
| 521 | <IN>; |
| 522 | } |
| 523 | |
| 524 | sub catch { |
| 525 | $signal = 1; |
| 526 | } |
| 527 | |
| 528 | sub sub { |
| 529 | push(@stack, $single); |
| 530 | $single &= 1; |
| 531 | $single |= 4 if $#stack == $deep; |
| 532 | if (wantarray) { |
| 533 | @i = &$sub; |
| 534 | $single |= pop(@stack); |
| 535 | @i; |
| 536 | } |
| 537 | else { |
| 538 | $i = &$sub; |
| 539 | $single |= pop(@stack); |
| 540 | $i; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | $single = 1; # so it stops on first executable statement |
| 545 | @hist = ('?'); |
| 546 | $SIG{'INT'} = "DB'catch"; |
| 547 | $deep = 100; # warning if stack gets this deep |
| 548 | $window = 10; |
| 549 | $preview = 3; |
| 550 | |
| 551 | @stack = (0); |
| 552 | @ARGS = @ARGV; |
| 553 | for (@args) { |
| 554 | s/'/\\'/g; |
| 555 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
| 556 | } |
| 557 | |
| 558 | if (-f '.perldb') { |
| 559 | do './.perldb'; |
| 560 | } |
| 561 | elsif (-f "$ENV{'LOGDIR'}/.perldb") { |
| 562 | do "$ENV{'LOGDIR'}/.perldb"; |
| 563 | } |
| 564 | elsif (-f "$ENV{'HOME'}/.perldb") { |
| 565 | do "$ENV{'HOME'}/.perldb"; |
| 566 | } |
| 567 | |
| 568 | 1; |
projects / p5sagit/p5-mst-13.2.git / blame