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a687059c |
1 | package DB; |
2 | |
d338d6fe |
3 | # Debugger for Perl 5.001m; perl5db.pl patch level: |
4 | |
5 | $header = 'perl5db.pl patch level 0.93'; |
6 | |
7 | # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) |
8 | # Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl |
9 | |
10 | # modified Perl debugger, to be run from Emacs in perldb-mode |
11 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
12 | # Johan Vromans -- upgrade to 4.0 pl 10 |
13 | # Ilya Zakharevich -- patches after 5.001 (and some before ;-) |
14 | |
15 | # |
16 | # This file is automatically included if you do perl -d. |
17 | # It's probably not useful to include this yourself. |
18 | # |
19 | # Perl supplies the values for @line and %sub. It effectively inserts |
20 | # a &DB'DB(<linenum>); in front of every place that can have a |
21 | # breakpoint. Instead of a subroutine call it calls &DB::sub with |
22 | # $DB::sub being the called subroutine. It also inserts a BEGIN |
23 | # {require 'perl5db.pl'} before the first line. |
24 | # |
25 | # Note that no subroutine call is possible until &DB::sub is defined |
26 | # (for subroutines defined outside this file). In fact the same is |
27 | # true if $deep is not defined. |
28 | # |
29 | # $Log: perldb.pl,v $ |
30 | |
31 | # |
32 | # At start reads $rcfile that may set important options. This file |
33 | # may define a subroutine &afterinit that will be executed after the |
34 | # debugger is initialized. |
35 | # |
36 | # After $rcfile is read reads environment variable PERLDB_OPTS and parses |
37 | # it as a rest of `O ...' line in debugger prompt. |
38 | # |
39 | # The options that can be specified only at startup: |
40 | # [To set in $rcfile, call &parse_options("optionName=new_value").] |
41 | # |
42 | # TTY - the TTY to use for debugging i/o. |
43 | # |
44 | # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set |
45 | # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using |
46 | # Term::Rendezvous. Current variant is to have the name of TTY in this |
47 | # file. |
48 | # |
49 | # ReadLine - If false, dummy ReadLine is used, so you can debug |
50 | # ReadLine applications. |
51 | # |
52 | # NonStop - if true, no i/o is performed until interrupt. |
53 | # |
54 | # LineInfo - file or pipe to print line number info to. If it is a |
55 | # pipe, a short "emacs like" message is used. |
56 | # |
57 | # Example $rcfile: (delete leading hashes!) |
58 | # |
59 | # &parse_options("NonStop=1 LineInfo=db.out"); |
60 | # sub afterinit { $trace = 1; } |
61 | # |
62 | # The script will run without human intervention, putting trace |
63 | # information into db.out. (If you interrupt it, you would better |
64 | # reset LineInfo to something "interactive"!) |
65 | # |
66 | |
67 | |
68 | local($^W) = 0; |
69 | warn ( # Do not ;-) |
70 | $dumpvar::hashDepth, |
71 | $dumpvar::arrayDepth, |
72 | $dumpvar::dumpDBFiles, |
73 | $dumpvar::dumpPackages, |
74 | $dumpvar::quoteHighBit, |
75 | $dumpvar::printUndef, |
76 | $dumpvar::globPrint, |
77 | $readline::Tk_toloop, |
78 | $dumpvar::usageOnly, |
79 | @ARGS, |
80 | $Carp::CarpLevel, |
81 | ) if 0; |
82 | |
83 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
84 | |
85 | $trace = $signal = $single = 0; # Uninitialized warning suppression |
86 | # (local $^W cannot help - other packages!). |
87 | @stack = (0); |
88 | |
89 | $option{PrintRet} = 1; |
90 | |
91 | @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages |
92 | compactDump veryCompact quote HighBit undefPrint |
93 | globPrint PrintRet UsageOnly frame |
94 | TTY noTTY ReadLine NonStop LineInfo |
95 | recallCommand ShellBang pager tkRunning |
96 | signalLevel warnLevel dieLevel); |
97 | |
98 | %optionVars = ( |
99 | hashDepth => \$dumpvar::hashDepth, |
100 | arrayDepth => \$dumpvar::arrayDepth, |
101 | DumpDBFiles => \$dumpvar::dumpDBFiles, |
102 | DumpPackages => \$dumpvar::dumpPackages, |
103 | HighBit => \$dumpvar::quoteHighBit, |
104 | undefPrint => \$dumpvar::printUndef, |
105 | globPrint => \$dumpvar::globPrint, |
106 | tkRunning => \$readline::Tk_toloop, |
107 | UsageOnly => \$dumpvar::usageOnly, |
108 | frame => \$frame, |
109 | ); |
110 | |
111 | %optionAction = ( |
112 | compactDump => \&dumpvar::compactDump, |
113 | veryCompact => \&dumpvar::veryCompact, |
114 | quote => \&dumpvar::quote, |
115 | TTY => \&TTY, |
116 | noTTY => \&noTTY, |
117 | ReadLine => \&ReadLine, |
118 | NonStop => \&NonStop, |
119 | LineInfo => \&LineInfo, |
120 | recallCommand => \&recallCommand, |
121 | ShellBang => \&shellBang, |
122 | pager => \&pager, |
123 | signalLevel => \&signalLevel, |
124 | warnLevel => \&warnLevel, |
125 | dieLevel => \&dieLevel, |
126 | ); |
127 | |
128 | %optionRequire = ( |
129 | compactDump => 'dumpvar.pl', |
130 | veryCompact => 'dumpvar.pl', |
131 | quote => 'dumpvar.pl', |
132 | ); |
133 | |
134 | # These guys may be defined in $ENV{PERL5DB} : |
135 | $rl = 1 unless defined $rl; |
136 | warnLevel($warnLevel); |
137 | dieLevel($dieLevel); |
138 | signalLevel($signalLevel); |
139 | &pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager; |
140 | &recallCommand("!") unless defined $prc; |
141 | &shellBang("!") unless defined $psh; |
142 | |
143 | if (-e "/dev/tty") { |
144 | $rcfile=".perldb"; |
145 | } else { |
146 | $rcfile="perldb.ini"; |
147 | } |
148 | |
149 | if (-f $rcfile) { |
150 | do "./$rcfile"; |
151 | } elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") { |
152 | do "$ENV{LOGDIR}/$rcfile"; |
153 | } elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") { |
154 | do "$ENV{HOME}/$rcfile"; |
155 | } |
156 | |
157 | if (defined $ENV{PERLDB_OPTS}) { |
158 | parse_options($ENV{PERLDB_OPTS}); |
159 | } |
160 | |
161 | if ($notty) { |
162 | $runnonstop = 1; |
163 | } else { |
164 | # Is Perl being run from Emacs? |
165 | $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
166 | $rl = 0, shift(@main::ARGV) if $emacs; |
167 | |
168 | #require Term::ReadLine; |
169 | |
170 | if (-e "/dev/tty") { |
171 | $console = "/dev/tty"; |
172 | } elsif (-e "con") { |
173 | $console = "con"; |
174 | } else { |
175 | $console = "sys\$command"; |
176 | } |
177 | |
178 | # Around a bug: |
179 | if (defined $ENV{OS2_SHELL} and $emacs) { # In OS/2 |
180 | $console = undef; |
181 | } |
182 | |
183 | $console = $tty if defined $tty; |
184 | |
185 | if (defined $console) { |
186 | open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN"); |
187 | open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR") |
188 | || open(OUT,">&STDOUT"); # so we don't dongle stdout |
189 | } else { |
190 | open(IN,"<&STDIN"); |
191 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout |
192 | $console = 'STDIN/OUT'; |
193 | } |
194 | # so open("|more") can read from STDOUT and so we don't dingle stdin |
195 | $IN = \*IN; |
196 | |
197 | $OUT = \*OUT; |
198 | select($OUT); |
199 | $| = 1; # for DB::OUT |
200 | select(STDOUT); |
201 | |
202 | $LINEINFO = $OUT unless defined $LINEINFO; |
203 | $lineinfo = $console unless defined $lineinfo; |
204 | |
205 | $| = 1; # for real STDOUT |
206 | |
207 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
208 | unless ($runnonstop) { |
209 | print $OUT "\nLoading DB routines from $header\n"; |
210 | print $OUT ("Emacs support ", |
211 | $emacs ? "enabled" : "available", |
212 | ".\n"); |
213 | print $OUT "\nEnter h or `h h' for help.\n\n"; |
214 | } |
215 | } |
216 | |
217 | @ARGS = @ARGV; |
218 | for (@args) { |
219 | s/\'/\\\'/g; |
220 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
221 | } |
222 | |
223 | if (defined &afterinit) { # May be defined in $rcfile |
224 | &afterinit(); |
225 | } |
226 | |
227 | ############################################################ Subroutines |
228 | |
229 | # The following code may be executed now, but gives FPE later: |
230 | # BEGIN {warn 5} |
231 | |
232 | sub DB { |
233 | if ($runnonstop) { # Disable until signal |
234 | for ($i=0; $i <= $#stack; ) { |
235 | $stack[$i++] &= ~1; |
236 | } |
237 | $single = $runnonstop = 0; # Once only |
238 | return; |
239 | } |
240 | &save; |
241 | if ($doret) { |
242 | $doret = 0; |
243 | if ($option{PrintRet}) { |
244 | print $OUT "$retctx context return from $lastsub:", |
245 | ($retctx eq 'list') ? "\n" : " " ; |
246 | dumpit( ($retctx eq 'list') ? \@ret : $ret ); |
247 | } |
248 | } |
249 | ($package, $filename, $line) = caller; |
250 | $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . |
251 | "package $package;"; # this won't let them modify, alas |
252 | local(*dbline) = "::_<$filename"; |
253 | $max = $#dbline; |
254 | if (($stop,$action) = split(/\0/,$dbline{$line})) { |
255 | if ($stop eq '1') { |
256 | $signal |= 1; |
257 | } else { |
258 | $evalarg = "\$DB::signal |= do {$stop;}"; &eval; |
259 | $dbline{$line} =~ s/;9($|\0)/$1/; |
260 | } |
261 | } |
262 | if ($single || $trace || $signal) { |
263 | $term || &setterm; |
264 | if ($emacs) { |
265 | print $LINEINFO "\032\032$filename:$line:0\n"; |
266 | } else { |
267 | $sub =~ s/\'/::/; |
268 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; |
269 | $prefix .= "$sub($filename:"; |
270 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); |
271 | if (length($prefix) > 30) { |
272 | print $LINEINFO "$prefix$line):\n$line:\t", $dbline[$line], $after; |
273 | $prefix = ""; |
274 | $infix = ":\t"; |
275 | } else { |
276 | $infix = "):\t"; |
277 | print $LINEINFO "$prefix$line$infix",$dbline[$line], $after; |
278 | } |
279 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi |
280 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; |
281 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); |
282 | print $LINEINFO "$prefix$i$infix", $dbline[$i], $after; |
283 | } |
284 | } |
285 | } |
286 | $evalarg = $action, &eval if $action; |
287 | if ($single || $signal) { |
288 | local $level = $level + 1; |
289 | $evalarg = $pre, &eval if $pre; |
290 | print $OUT $#stack . " levels deep in subroutine calls!\n" |
291 | if $single & 4; |
292 | $start = $line; |
293 | CMD: |
294 | while (($term || &setterm), |
295 | defined ($cmd=$term->readline(" DB" . ('<' x $level) . |
296 | ($#hist+1) . ('>' x $level) . |
297 | " "))) { |
298 | { # <-- Do we know what this brace is for? |
299 | $single = 0; |
300 | $signal = 0; |
301 | $cmd =~ s/\\$/\n/ && do { |
302 | $cmd .= $term->readline(" cont: "); |
303 | redo CMD; |
304 | }; |
305 | $cmd =~ /^q$/ && exit 0; |
306 | $cmd =~ /^$/ && ($cmd = $laststep); |
307 | push(@hist,$cmd) if length($cmd) > 1; |
308 | PIPE: { |
309 | ($i) = split(/\s+/,$cmd); |
310 | eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i}; |
311 | $cmd =~ /^h$/ && do { |
312 | print $OUT $help; |
313 | next CMD; }; |
314 | $cmd =~ /^h\s+h$/ && do { |
315 | print $OUT $summary; |
316 | next CMD; }; |
317 | $cmd =~ /^h\s+(\S)$/ && do { |
318 | my $asked = "\Q$1"; |
319 | if ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/m) { |
320 | print $OUT $1; |
321 | } else { |
322 | print $OUT "`$asked' is not a debugger command.\n"; |
323 | } |
324 | next CMD; }; |
325 | $cmd =~ /^t$/ && do { |
326 | $trace = !$trace; |
327 | print $OUT "Trace = ".($trace?"on":"off")."\n"; |
328 | next CMD; }; |
329 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { |
330 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; |
331 | foreach $subname (sort(keys %sub)) { |
332 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { |
333 | print $OUT $subname,"\n"; |
334 | } |
335 | } |
336 | next CMD; }; |
337 | $cmd =~ s/^X\b/V $package/; |
338 | $cmd =~ /^V$/ && do { |
339 | $cmd = "V $package"; }; |
340 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
341 | local ($savout) = select($OUT); |
342 | $packname = $1; |
343 | @vars = split(' ',$2); |
344 | do 'dumpvar.pl' unless defined &main::dumpvar; |
345 | if (defined &main::dumpvar) { |
346 | &main::dumpvar($packname,@vars); |
347 | } else { |
348 | print $OUT "dumpvar.pl not available.\n"; |
349 | } |
350 | select ($savout); |
351 | next CMD; }; |
352 | $cmd =~ s/^x\b/ / && do { # So that will be evaled |
353 | $onetimeDump = 1; }; |
354 | $cmd =~ /^f\b\s*(.*)/ && do { |
355 | $file = $1; |
356 | if (!$file) { |
357 | print $OUT "The old f command is now the r command.\n"; |
358 | print $OUT "The new f command switches filenames.\n"; |
359 | next CMD; |
360 | } |
361 | if (!defined $main::{'_<' . $file}) { |
362 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ |
363 | $file = substr($try,2); |
364 | print "\n$file:\n"; |
365 | }} |
366 | } |
367 | if (!defined $main::{'_<' . $file}) { |
368 | print $OUT "There's no code here matching $file.\n"; |
369 | next CMD; |
370 | } elsif ($file ne $filename) { |
371 | *dbline = "::_<$file"; |
372 | $max = $#dbline; |
373 | $filename = $file; |
374 | $start = 1; |
375 | $cmd = "l"; |
376 | } }; |
377 | $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do { |
378 | $subname = $1; |
379 | $subname =~ s/\'/::/; |
380 | $subname = "main::".$subname unless $subname =~ /::/; |
381 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
382 | @pieces = split(/:/,$sub{$subname}); |
383 | $subrange = pop @pieces; |
384 | $file = join(':', @pieces); |
385 | if ($file ne $filename) { |
386 | *dbline = "::_<$file"; |
387 | $max = $#dbline; |
388 | $filename = $file; |
389 | } |
390 | if ($subrange) { |
391 | if (eval($subrange) < -$window) { |
392 | $subrange =~ s/-.*/+/; |
393 | } |
394 | $cmd = "l $subrange"; |
395 | } else { |
396 | print $OUT "Subroutine $subname not found.\n"; |
397 | next CMD; |
398 | } }; |
399 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
400 | $incr = $window - 1; |
401 | $start = $1 if $1; |
402 | $start -= $preview; |
403 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
404 | $cmd =~ /^-$/ && do { |
405 | $incr = $window - 1; |
406 | $cmd = 'l ' . ($start-$window*2) . '+'; }; |
407 | $cmd =~ /^l$/ && do { |
408 | $incr = $window - 1; |
409 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
410 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { |
411 | $start = $1 if $1; |
412 | $incr = $2; |
413 | $incr = $window - 1 unless $incr; |
414 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
415 | $cmd =~ /^l\b\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
416 | $end = (!$2) ? $max : ($4 ? $4 : $2); |
417 | $end = $max if $end > $max; |
418 | $i = $2; |
419 | $i = $line if $i eq '.'; |
420 | $i = 1 if $i < 1; |
421 | if ($emacs) { |
422 | print $OUT "\032\032$filename:$i:0\n"; |
423 | $i = $end; |
424 | } else { |
425 | for (; $i <= $end; $i++) { |
426 | print $OUT "$i:\t", $dbline[$i]; |
427 | last if $signal; |
428 | } |
429 | } |
430 | $start = $i; # remember in case they want more |
431 | $start = $max if $start > $max; |
432 | next CMD; }; |
433 | $cmd =~ /^D$/ && do { |
434 | print $OUT "Deleting all breakpoints...\n"; |
435 | for ($i = 1; $i <= $max ; $i++) { |
436 | if (defined $dbline{$i}) { |
437 | $dbline{$i} =~ s/^[^\0]+//; |
438 | if ($dbline{$i} =~ s/^\0?$//) { |
439 | delete $dbline{$i}; |
440 | } |
441 | } |
442 | } |
443 | next CMD; }; |
444 | $cmd =~ /^L$/ && do { |
445 | for ($i = 1; $i <= $max; $i++) { |
446 | if (defined $dbline{$i}) { |
447 | print $OUT "$i:\t", $dbline[$i]; |
448 | ($stop,$action) = split(/\0/, $dbline{$i}); |
449 | print $OUT " break if (", $stop, ")\n" |
450 | if $stop; |
451 | print $OUT " action: ", $action, "\n" |
452 | if $action; |
453 | last if $signal; |
454 | } |
455 | } |
456 | next CMD; }; |
457 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
458 | $subname = $1; |
459 | $cond = $2 || '1'; |
460 | $subname =~ s/\'/::/; |
461 | $subname = "${'package'}::" . $subname |
462 | unless $subname =~ /::/; |
463 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
464 | # Filename below can contain ':' |
465 | ($file,$i) = ($sub{$subname} =~ /^(.*):(.*)$/); |
466 | $i += 0; |
467 | if ($i) { |
468 | $filename = $file; |
469 | *dbline = "::_<$filename"; |
470 | $max = $#dbline; |
471 | ++$i while $dbline[$i] == 0 && $i < $max; |
472 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
473 | } else { |
474 | print $OUT "Subroutine $subname not found.\n"; |
475 | } |
476 | next CMD; }; |
477 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { |
478 | $i = ($1?$1:$line); |
479 | $cond = $2 || '1'; |
480 | if ($dbline[$i] == 0) { |
481 | print $OUT "Line $i not breakable.\n"; |
482 | } else { |
483 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
484 | } |
485 | next CMD; }; |
486 | $cmd =~ /^d\b\s*(\d+)?/ && do { |
487 | $i = ($1?$1:$line); |
488 | $dbline{$i} =~ s/^[^\0]*//; |
489 | delete $dbline{$i} if $dbline{$i} eq ''; |
490 | next CMD; }; |
491 | $cmd =~ /^A$/ && do { |
492 | for ($i = 1; $i <= $max ; $i++) { |
493 | if (defined $dbline{$i}) { |
494 | $dbline{$i} =~ s/\0[^\0]*//; |
495 | delete $dbline{$i} if $dbline{$i} eq ''; |
496 | } |
497 | } |
498 | next CMD; }; |
499 | $cmd =~ /^O\s*$/ && do { |
500 | for (@options) { |
501 | &dump_option($_); |
502 | } |
503 | next CMD; }; |
504 | $cmd =~ /^O\s*(\S.*)/ && do { |
505 | parse_options($1); |
506 | next CMD; }; |
507 | $cmd =~ /^<\s*(.*)/ && do { |
508 | $pre = action($1); |
509 | next CMD; }; |
510 | $cmd =~ /^>\s*(.*)/ && do { |
511 | $post = action($1); |
512 | next CMD; }; |
513 | $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { |
514 | $i = $1; $j = $3; |
515 | if ($dbline[$i] == 0) { |
516 | print $OUT "Line $i may not have an action.\n"; |
517 | } else { |
518 | $dbline{$i} =~ s/\0[^\0]*//; |
519 | $dbline{$i} .= "\0" . action($j); |
520 | } |
521 | next CMD; }; |
522 | $cmd =~ /^n$/ && do { |
523 | $single = 2; |
524 | $laststep = $cmd; |
525 | last CMD; }; |
526 | $cmd =~ /^s$/ && do { |
527 | $single = 1; |
528 | $laststep = $cmd; |
529 | last CMD; }; |
530 | $cmd =~ /^c\b\s*(\d*)\s*$/ && do { |
531 | $i = $1; |
532 | if ($i) { |
533 | if ($dbline[$i] == 0) { |
534 | print $OUT "Line $i not breakable.\n"; |
535 | next CMD; |
536 | } |
537 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. |
538 | } |
539 | for ($i=0; $i <= $#stack; ) { |
540 | $stack[$i++] &= ~1; |
541 | } |
542 | last CMD; }; |
543 | $cmd =~ /^r$/ && do { |
544 | $stack[$#stack] |= 1; |
545 | $doret = 1; |
546 | last CMD; }; |
547 | $cmd =~ /^T$/ && do { |
548 | local($p,$f,$l,$s,$h,$a,$e,$r,@a,@sub); |
549 | for ($i = 1; |
550 | ($p,$f,$l,$s,$h,$w,$e,$r) = caller($i); |
551 | $i++) { |
552 | @a = (); |
553 | for $arg (@args) { |
554 | $_ = "$arg"; |
555 | s/([\'\\])/\\$1/g; |
556 | s/([^\0]*)/'$1'/ |
557 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
558 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
559 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
560 | push(@a, $_); |
561 | } |
562 | $w = $w ? '@ = ' : '$ = '; |
563 | $a = $h ? '(' . join(', ', @a) . ')' : ''; |
564 | $e =~ s/\n\s*\;\s*\Z// if $e; |
565 | $e =~ s/[\\\']/\\$1/g if $e; |
566 | if ($r) { |
567 | $s = "require '$e'"; |
568 | } elsif (defined $r) { |
569 | $s = "eval '$e'"; |
570 | } elsif ($s eq '(eval)') { |
571 | $s = "eval {...}"; |
572 | } |
573 | $f = "file `$f'" unless $f eq '-e'; |
574 | push(@sub, "$w$s$a called from $f line $l\n"); |
575 | last if $signal; |
576 | } |
577 | for ($i=0; $i <= $#sub; $i++) { |
578 | last if $signal; |
579 | print $OUT $sub[$i]; |
580 | } |
581 | next CMD; }; |
582 | $cmd =~ /^\/(.*)$/ && do { |
583 | $inpat = $1; |
584 | $inpat =~ s:([^\\])/$:$1:; |
585 | if ($inpat ne "") { |
586 | eval '$inpat =~ m'."\a$inpat\a"; |
587 | if ($@ ne "") { |
588 | print $OUT "$@"; |
589 | next CMD; |
590 | } |
591 | $pat = $inpat; |
592 | } |
593 | $end = $start; |
594 | eval ' |
595 | for (;;) { |
596 | ++$start; |
597 | $start = 1 if ($start > $max); |
598 | last if ($start == $end); |
599 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
600 | if ($emacs) { |
601 | print $OUT "\032\032$filename:$start:0\n"; |
602 | } else { |
603 | print $OUT "$start:\t", $dbline[$start], "\n"; |
604 | } |
605 | last; |
606 | } |
607 | } '; |
608 | print $OUT "/$pat/: not found\n" if ($start == $end); |
609 | next CMD; }; |
610 | $cmd =~ /^\?(.*)$/ && do { |
611 | $inpat = $1; |
612 | $inpat =~ s:([^\\])\?$:$1:; |
613 | if ($inpat ne "") { |
614 | eval '$inpat =~ m'."\a$inpat\a"; |
615 | if ($@ ne "") { |
616 | print $OUT "$@"; |
617 | next CMD; |
618 | } |
619 | $pat = $inpat; |
620 | } |
621 | $end = $start; |
622 | eval ' |
623 | for (;;) { |
624 | --$start; |
625 | $start = $max if ($start <= 0); |
626 | last if ($start == $end); |
627 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
628 | if ($emacs) { |
629 | print $OUT "\032\032$filename:$start:0\n"; |
630 | } else { |
631 | print $OUT "$start:\t", $dbline[$start], "\n"; |
632 | } |
633 | last; |
634 | } |
635 | } '; |
636 | print $OUT "?$pat?: not found\n" if ($start == $end); |
637 | next CMD; }; |
638 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { |
639 | pop(@hist) if length($cmd) > 1; |
640 | $i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist); |
641 | $cmd = $hist[$i] . "\n"; |
642 | print $OUT $cmd; |
643 | redo CMD; }; |
644 | $cmd =~ /^$sh$sh\s*/ && do { |
645 | &system($'); |
646 | next CMD; }; |
647 | $cmd =~ /^$rc([^$rc].*)$/ && do { |
648 | $pat = "^$1"; |
649 | pop(@hist) if length($cmd) > 1; |
650 | for ($i = $#hist; $i; --$i) { |
651 | last if $hist[$i] =~ /$pat/; |
652 | } |
653 | if (!$i) { |
654 | print $OUT "No such command!\n\n"; |
655 | next CMD; |
656 | } |
657 | $cmd = $hist[$i] . "\n"; |
658 | print $OUT $cmd; |
659 | redo CMD; }; |
660 | $cmd =~ /^$sh$/ && do { |
661 | &system($ENV{SHELL}||"/bin/sh"); |
662 | next CMD; }; |
663 | $cmd =~ /^$sh\s*/ && do { |
664 | &system($ENV{SHELL}||"/bin/sh","-c",$'); |
665 | next CMD; }; |
666 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
667 | $end = $2?($#hist-$2):0; |
668 | $hist = 0 if $hist < 0; |
669 | for ($i=$#hist; $i>$end; $i--) { |
670 | print $OUT "$i: ",$hist[$i],"\n" |
671 | unless $hist[$i] =~ /^.?$/; |
672 | }; |
673 | next CMD; }; |
674 | $cmd =~ s/^p$/print \$DB::OUT \$_/; |
675 | $cmd =~ s/^p\b/print \$DB::OUT /; |
676 | $cmd =~ /^=/ && do { |
677 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { |
678 | $alias{$k}="s~$k~$v~"; |
679 | print $OUT "$k = $v\n"; |
680 | } elsif ($cmd =~ /^=\s*$/) { |
681 | foreach $k (sort keys(%alias)) { |
682 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { |
683 | print $OUT "$k = $v\n"; |
684 | } else { |
685 | print $OUT "$k\t$alias{$k}\n"; |
686 | }; |
687 | }; |
688 | }; |
689 | next CMD; }; |
690 | $cmd =~ /^\|\|?\s*[^|]/ && do { |
691 | if ($pager =~ /^\|/) { |
692 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
693 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
694 | } else { |
695 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); |
696 | } |
697 | unless ($piped=open(OUT,$pager)) { |
698 | &warn("Can't pipe output to `$pager'"); |
699 | if ($pager =~ /^\|/) { |
700 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
701 | open(STDOUT,">&SAVEOUT") |
702 | || &warn("Can't restore STDOUT"); |
703 | close(SAVEOUT); |
704 | } else { |
705 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
706 | } |
707 | next CMD; |
708 | } |
709 | $SIG{PIPE}= "DB::catch" if $pager =~ /^\|/ |
710 | && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}; |
711 | $selected= select(OUT); |
712 | $|= 1; |
713 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; |
714 | $cmd =~ s/^\|+\s*//; |
715 | redo PIPE; }; |
716 | # XXX Local variants do not work! |
717 | $cmd =~ s/^t\s/\$DB::trace = 1;\n/; |
718 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; |
719 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; |
720 | } # PIPE: |
721 | } # <-- Do we know what this brace is for? |
722 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
723 | if ($onetimeDump) { |
724 | $onetimeDump = undef; |
725 | } else { |
726 | print $OUT "\n"; |
727 | } |
728 | } continue { # CMD: |
729 | if ($piped) { |
730 | if ($pager =~ /^\|/) { |
731 | $?= 0; close(OUT) || &warn("Can't close DB::OUT"); |
732 | &warn( "Pager `$pager' failed: ", |
733 | ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), |
734 | ( $? & 128 ) ? " (core dumped)" : "", |
735 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
736 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
737 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
738 | $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq "DB::catch"; |
739 | # Will stop ignoring SIGPIPE if done like nohup(1) |
740 | # does SIGINT but Perl doesn't give us a choice. |
741 | } else { |
742 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); |
743 | } |
744 | close(SAVEOUT); |
745 | select($selected), $selected= "" unless $selected eq ""; |
746 | $piped= ""; |
747 | } |
748 | } # CMD: |
749 | if ($post) { |
750 | $evalarg = $post; &eval; |
751 | } |
752 | } # if ($single || $signal) |
753 | ($@, $!, $,, $/, $\, $^W) = @saved; |
754 | (); |
755 | } |
756 | |
757 | # The following code may be executed now: |
758 | # BEGIN {warn 4} |
759 | |
760 | sub sub { |
761 | print $LINEINFO ' ' x $#stack, "entering $sub\n" if $frame; |
762 | push(@stack, $single); |
763 | $single &= 1; |
764 | $single |= 4 if $#stack == $deep; |
765 | if (wantarray) { |
766 | @ret = &$sub; |
767 | $single |= pop(@stack); |
768 | $retctx = "list"; |
769 | $lastsub = $sub; |
770 | print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame; |
771 | @ret; |
772 | } else { |
773 | $ret = &$sub; |
774 | $single |= pop(@stack); |
775 | $retctx = "scalar"; |
776 | $lastsub = $sub; |
777 | print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame; |
778 | $ret; |
779 | } |
780 | } |
781 | |
782 | sub save { |
783 | @saved = ($@, $!, $,, $/, $\, $^W); |
784 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
785 | } |
786 | |
787 | # The following takes its argument via $evalarg to preserve current @_ |
788 | |
789 | sub eval { |
790 | my @res; |
791 | { |
792 | local (@stack) = @stack; # guard against recursive debugging |
793 | my $otrace = $trace; |
794 | my $osingle = $single; |
795 | my $od = $^D; |
796 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug |
797 | $trace = $otrace; |
798 | $single = $osingle; |
799 | $^D = $od; |
800 | } |
801 | my $at = $@; |
802 | eval "&DB::save"; |
803 | if ($at) { |
804 | print $OUT $at; |
805 | } elsif ($onetimeDump) { |
806 | dumpit(\@res); |
807 | } |
808 | } |
809 | |
810 | sub dumpit { |
811 | local ($savout) = select($OUT); |
812 | do 'dumpvar.pl' unless defined &main::dumpValue; |
813 | if (defined &main::dumpValue) { |
814 | &main::dumpValue(shift); |
815 | } else { |
816 | print $OUT "dumpvar.pl not available.\n"; |
817 | } |
818 | select ($savout); |
819 | } |
820 | |
821 | sub action { |
822 | my $action = shift; |
823 | while ($action =~ s/\\$//) { |
824 | #print $OUT "+ "; |
825 | #$action .= "\n"; |
826 | $action .= &gets; |
827 | } |
828 | $action; |
829 | } |
830 | |
831 | sub gets { |
832 | local($.); |
833 | #<IN>; |
834 | &readline("cont: "); |
835 | } |
836 | |
837 | sub system { |
838 | # We save, change, then restore STDIN and STDOUT to avoid fork() since |
839 | # many non-Unix systems can do system() but have problems with fork(). |
840 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); |
841 | open(SAVEOUT,">&OUT") || &warn("Can't save STDOUT"); |
842 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); |
843 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
844 | system(@_); |
845 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); |
846 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
847 | close(SAVEIN); close(SAVEOUT); |
848 | &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")", |
849 | ( $? & 128 ) ? " (core dumped)" : "", |
850 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
851 | $?; |
852 | } |
853 | |
854 | sub setterm { |
855 | eval "require Term::ReadLine;" or die $@; |
856 | if ($notty) { |
857 | if ($tty) { |
858 | open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!"; |
859 | open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!"; |
860 | $IN = \*IN; |
861 | $OUT = \*OUT; |
862 | my $sel = select($OUT); |
863 | $| = 1; |
864 | select($sel); |
865 | } else { |
866 | eval "require Term::Rendezvous;" or die $@; |
867 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; |
868 | my $term_rv = new Term::Rendezvous $rv; |
869 | $IN = $term_rv->IN; |
870 | $OUT = $term_rv->OUT; |
871 | } |
872 | } |
873 | if (!$rl) { |
874 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; |
875 | } else { |
876 | $term = new Term::ReadLine 'perldb', $IN, $OUT; |
877 | |
878 | $readline::rl_basic_word_break_characters .= "[:" |
879 | if defined $readline::rl_basic_word_break_characters |
880 | and index($readline::rl_basic_word_break_characters, ":") == -1; |
881 | } |
882 | $LINEINFO = $OUT unless defined $LINEINFO; |
883 | $lineinfo = $console unless defined $lineinfo; |
884 | $term->MinLine(2); |
885 | } |
886 | |
887 | sub readline { |
888 | local $frame = 0; |
889 | $term->readline(@_); |
890 | } |
891 | |
892 | sub dump_option { |
893 | my ($opt, $val)= @_; |
894 | if (defined $optionVars{$opt} |
895 | and defined $ {$optionVars{$opt}}) { |
896 | $val = $ {$optionVars{$opt}}; |
897 | } elsif (defined $optionAction{$opt} |
898 | and defined &{$optionAction{$opt}}) { |
899 | $val = &{$optionAction{$opt}}(); |
900 | } elsif (defined $optionAction{$opt} |
901 | and not defined $option{$opt} |
902 | or defined $optionVars{$opt} |
903 | and not defined $ {$optionVars{$opt}}) { |
904 | $val = 'N/A'; |
905 | } else { |
906 | $val = $option{$opt}; |
907 | } |
908 | $val =~ s/[\\\']/\\$&/g; |
909 | printf $OUT "%20s = '%s'\n", $opt, $val; |
910 | } |
911 | |
912 | sub parse_options { |
913 | local($_)= @_; |
914 | while ($_ ne "") { |
915 | s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last; |
916 | my ($opt,$sep) = ($1,$2); |
917 | my $val; |
918 | if ("?" eq $sep) { |
919 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last |
920 | if /^\S/; |
921 | #&dump_option($opt); |
922 | } elsif ($sep !~ /\S/) { |
923 | $val = "1"; |
924 | } elsif ($sep eq "=") { |
925 | s/^(\S*)($|\s+)//; |
926 | $val = $1; |
927 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." |
928 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} |
929 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or |
930 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; |
931 | $val = $1; |
932 | $val =~ s/\\([\\$end])/$1/g; |
933 | } |
934 | my ($option); |
935 | my $matches = |
936 | grep( /^\Q$opt/ && ($option = $_), @options ); |
937 | $matches = grep( /^\Q$opt/i && ($option = $_), @options ) |
938 | unless $matches; |
939 | print $OUT "Unknown option `$opt'\n" unless $matches; |
940 | print $OUT "Ambiguous option `$opt'\n" if $matches > 1; |
941 | $option{$option} = $val if $matches == 1 and defined $val; |
942 | eval "require '$optionRequire{$option}'" |
943 | if $matches == 1 and defined $optionRequire{$option} and defined $val; |
944 | $ {$optionVars{$option}} = $val |
945 | if $matches == 1 |
946 | and defined $optionVars{$option} and defined $val; |
947 | & {$optionAction{$option}} ($val) |
948 | if $matches == 1 |
949 | and defined $optionAction{$option} |
950 | and defined &{$optionAction{$option}} and defined $val; |
951 | &dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile |
952 | s/^\s+//; |
953 | } |
954 | } |
955 | |
956 | sub catch { |
957 | $signal = 1; |
958 | } |
959 | |
960 | sub warn { |
961 | my($msg)= join("",@_); |
962 | $msg .= ": $!\n" unless $msg =~ /\n$/; |
963 | print $OUT $msg; |
964 | } |
965 | |
966 | sub TTY { |
967 | if ($term) { |
968 | &warn("Too late to set TTY!\n") if @_; |
969 | } else { |
970 | $tty = shift if @_; |
971 | } |
972 | $tty or $console; |
973 | } |
974 | |
975 | sub noTTY { |
976 | if ($term) { |
977 | &warn("Too late to set noTTY!\n") if @_; |
978 | } else { |
979 | $notty = shift if @_; |
980 | } |
981 | $notty; |
982 | } |
983 | |
984 | sub ReadLine { |
985 | if ($term) { |
986 | &warn("Too late to set ReadLine!\n") if @_; |
987 | } else { |
988 | $rl = shift if @_; |
989 | } |
990 | $rl; |
991 | } |
992 | |
993 | sub NonStop { |
994 | if ($term) { |
995 | &warn("Too late to set up NonStop mode!\n") if @_; |
996 | } else { |
997 | $runnonstop = shift if @_; |
998 | } |
999 | $runnonstop; |
1000 | } |
1001 | |
1002 | sub pager { |
1003 | if (@_) { |
1004 | $pager = shift; |
1005 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; |
1006 | } |
1007 | $pager; |
1008 | } |
1009 | |
1010 | sub shellBang { |
1011 | if (@_) { |
1012 | $sh = quotemeta shift; |
1013 | $sh .= "\\b" if $sh =~ /\w$/; |
1014 | } |
1015 | $psh = $sh; |
1016 | $psh =~ s/\\b$//; |
1017 | $psh =~ s/\\(.)/$1/g; |
1018 | &sethelp; |
1019 | $psh; |
1020 | } |
1021 | |
1022 | sub recallCommand { |
1023 | if (@_) { |
1024 | $rc = quotemeta shift; |
1025 | $rc .= "\\b" if $rc =~ /\w$/; |
1026 | } |
1027 | $prc = $rc; |
1028 | $prc =~ s/\\b$//; |
1029 | $prc =~ s/\\(.)/$1/g; |
1030 | &sethelp; |
1031 | $prc; |
1032 | } |
1033 | |
1034 | sub LineInfo { |
1035 | return $lineinfo unless @_; |
1036 | $lineinfo = shift; |
1037 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; |
1038 | $emacs = ($stream =~ /^\|/); |
1039 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); |
1040 | $LINEINFO = \*LINEINFO; |
1041 | my $save = select($LINEINFO); |
1042 | $| = 1; |
1043 | select($save); |
1044 | $lineinfo; |
1045 | } |
1046 | |
1047 | sub sethelp { |
1048 | $help = " |
1049 | T Stack trace. |
1050 | s [expr] Single step [in expr]. |
1051 | n [expr] Next, steps over subroutine calls [in expr]. |
1052 | <CR> Repeat last n or s command. |
1053 | r Return from current subroutine. |
1054 | c [line] Continue; optionally inserts a one-time-only breakpoint |
1055 | at the specified line. |
1056 | l min+incr List incr+1 lines starting at min. |
1057 | l min-max List lines min through max. |
1058 | l line List single line. |
1059 | l subname List first window of lines from subroutine. |
1060 | l List next window of lines. |
1061 | - List previous window of lines. |
1062 | w [line] List window around line. |
1063 | f filename Switch to viewing filename. |
1064 | /pattern/ Search forwards for pattern; final / is optional. |
1065 | ?pattern? Search backwards for pattern; final ? is optional. |
1066 | L List all breakpoints and actions. |
1067 | S [[!]pattern] List subroutine names [not] matching pattern. |
1068 | t Toggle trace mode. |
1069 | t expr Trace through execution of expr. |
1070 | b [line] [condition] |
1071 | Set breakpoint; line defaults to the current execution line; |
1072 | condition breaks if it evaluates to true, defaults to '1'. |
1073 | b subname [condition] |
1074 | Set breakpoint at first line of subroutine. |
1075 | d [line] Delete the breakpoint for line. |
1076 | D Delete all breakpoints. |
1077 | a [line] command |
1078 | Set an action to be done before the line is executed. |
1079 | Sequence is: check for breakpoint, print line if necessary, |
1080 | do action, prompt user if breakpoint or step, evaluate line. |
1081 | A Delete all actions. |
1082 | V [pkg [vars]] List some (default all) variables in package (default current). |
1083 | Use ~pattern and !pattern for positive and negative regexps. |
1084 | X [vars] Same as \"V currentpackage [vars]\". |
1085 | x expr Evals expression in array context, dumps the result. |
1086 | O [opt[=val]] [opt\"val\"] [opt?]... |
1087 | Set or query values of options. val defaults to 1. opt can |
1088 | be abbreviated. Several options can be listed. |
1089 | recallCommand, ShellBang: chars used to recall command or spawn shell; |
1090 | pager: program for output of \"|cmd\"; |
1091 | The following options affect what happens with V, X, and x commands: |
1092 | arrayDepth, hashDepth: print only first N elements ('' for all); |
1093 | compactDump, veryCompact: change style of array and hash dump; |
1094 | globPrint: whether to print contents of globs; |
1095 | DumpDBFiles: dump arrays holding debugged files; |
1096 | DumpPackages: dump symbol tables of packages; |
1097 | quote, HighBit, undefPrint: change style of string dump; |
1098 | tkRunning: run Tk while prompting (with ReadLine); |
1099 | signalLevel warnLevel dieLevel: level of verbosity; |
1100 | Option PrintRet affects printing of return value after r command, |
1101 | frame affects printing messages on entry and exit from subroutines. |
1102 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
1103 | You can put additional initialization options TTY, noTTY, |
1104 | ReadLine, and NonStop there. |
1105 | < command Define command to run before each prompt. |
1106 | > command Define command to run after each prompt. |
1107 | $prc number Redo a previous command (default previous command). |
1108 | $prc -number Redo number'th-to-last command. |
1109 | $prc pattern Redo last command that started with pattern. |
1110 | See 'O recallCommand' too. |
1111 | $psh$psh cmd Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
1112 | . ( $rc eq $sh ? "" : " |
1113 | $psh [cmd] Run cmd in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
1114 | See 'O shellBang' too. |
1115 | H -number Display last number commands (default all). |
1116 | p expr Same as \"print DB::OUT expr\" in current package. |
1117 | |dbcmd Run debugger command, piping DB::OUT to current pager. |
1118 | ||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well. |
1119 | \= [alias value] Define a command alias, or list current aliases. |
1120 | command Execute as a perl statement in current package. |
1121 | h [db_command] Get help [on a specific debugger command], enter |h to page. |
1122 | h h Summary of debugger commands. |
1123 | q or ^D Quit. |
1124 | |
1125 | "; |
1126 | $summary = <<"END_SUM"; |
1127 | List/search source lines: Control script execution: |
1128 | l [ln|sub] List source code T Stack trace |
1129 | - List previous lines s [expr] Single step [in expr] |
1130 | w [line] List around line n [expr] Next, steps over subs |
1131 | f filename View source in file <CR> Repeat last n or s |
1132 | /pattern/ Search forward r Return from subroutine |
1133 | ?pattern? Search backward c [line] Continue until line |
1134 | Debugger controls: L List break pts & actions |
1135 | O [...] Set debugger options t [expr] Toggle trace [trace expr] |
1136 | < command Command for before prompt b [ln] [c] Set breakpoint |
1137 | > command Command for after prompt b sub [c] Set breakpoint for sub |
1138 | $prc [N|pat] Redo a previous command d [line] Delete a breakpoint |
1139 | H [-num] Display last num commands D Delete all breakpoints |
1140 | = [a val] Define/list an alias a [ln] cmd Do cmd before line |
1141 | h [db_cmd] Get help on command A Delete all actions |
1142 | |[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess |
1143 | q or ^D Quit |
1144 | Data Examination: expr Execute perl code, also see: s,n,t expr |
1145 | S [[!]pat] List subroutine names [not] matching pattern |
1146 | V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern. |
1147 | X [Vars] Same as \"V current_package [Vars]\". |
1148 | x expr Evals expression in array context, dumps the result. |
1149 | p expr Print expression (uses script's current package). |
1150 | END_SUM |
1151 | # '); # Fix balance of Emacs parsing |
1152 | } |
1153 | |
1154 | |
1155 | sub diesignal { |
1156 | $SIG{'ABRT'} = DEFAULT; |
1157 | kill 'ABRT', $$ if $panic++; |
1158 | print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue |
1159 | local $SIG{__WARN__} = ''; |
1160 | require Carp; |
1161 | local $Carp::CarpLevel = 2; # mydie + confess |
1162 | &warn(Carp::longmess("Signal @_")); |
1163 | kill 'ABRT', $$; |
1164 | } |
1165 | |
1166 | sub dbwarn { |
1167 | local $SIG{__WARN__} = ''; |
1168 | require Carp; |
1169 | #&warn("Entering dbwarn\n"); |
1170 | my ($mysingle,$mytrace) = ($single,$trace); |
1171 | $single = 0; $trace = 0; |
1172 | my $mess = Carp::longmess(@_); |
1173 | ($single,$trace) = ($mysingle,$mytrace); |
1174 | #&warn("Warning in dbwarn\n"); |
1175 | &warn($mess); |
1176 | #&warn("Exiting dbwarn\n"); |
1177 | } |
1178 | |
1179 | sub dbdie { |
1180 | local $SIG{__DIE__} = ''; |
1181 | local $SIG{__WARN__} = ''; |
1182 | my $i = 0; my $ineval = 0; my $sub; |
1183 | #&warn("Entering dbdie\n"); |
1184 | if ($dieLevel != 2) { |
1185 | while ((undef,undef,undef,$sub) = caller(++$i)) { |
1186 | $ineval = 1, last if $sub eq '(eval)'; |
1187 | } |
1188 | { |
1189 | local $SIG{__WARN__} = \&dbwarn; |
1190 | &warn(@_) if $dieLevel > 2; # Ineval is false during destruction? |
1191 | } |
1192 | #&warn("dieing quietly in dbdie\n") if $ineval and $dieLevel < 2; |
1193 | die @_ if $ineval and $dieLevel < 2; |
1194 | } |
1195 | require Carp; |
1196 | # We do not want to debug this chunk (automatic disabling works |
1197 | # inside DB::DB, but not in Carp). |
1198 | my ($mysingle,$mytrace) = ($single,$trace); |
1199 | $single = 0; $trace = 0; |
1200 | my $mess = Carp::longmess(@_); |
1201 | ($single,$trace) = ($mysingle,$mytrace); |
1202 | #&warn("dieing loudly in dbdie\n"); |
1203 | die $mess; |
1204 | } |
1205 | |
1206 | # sub diehard { # Always dump, useful if fatal is |
1207 | # # deeply in evals. |
1208 | # local $SIG{__DIE__} = ''; |
1209 | # require Carp; |
1210 | # # We do not want to debug this (automatic disabling works inside DB::DB) |
1211 | # my ($mysingle,$mytrace) = ($single,$trace); |
1212 | # $single = 0; $trace = 0; |
1213 | # my $mess = Carp::longmess(@_); |
1214 | # ($single,$trace) = ($mysingle,$mytrace); |
1215 | # die $mess; |
1216 | # } |
1217 | |
1218 | sub warnLevel { |
1219 | if (@_) { |
1220 | $prevwarn = $SIG{__WARN__} unless $warnLevel; |
1221 | $warnLevel = shift; |
1222 | if ($warnLevel) { |
1223 | $SIG{__WARN__} = 'DB::dbwarn'; |
1224 | } else { |
1225 | $SIG{__WARN__} = $prevwarn; |
1226 | } |
1227 | } |
1228 | $warnLevel; |
1229 | } |
1230 | |
1231 | sub dieLevel { |
1232 | if (@_) { |
1233 | $prevdie = $SIG{__DIE__} unless $dieLevel; |
1234 | $dieLevel = shift; |
1235 | if ($dieLevel) { |
1236 | $SIG{__DIE__} = 'DB::dbdie'; # if $dieLevel < 2; |
1237 | #$SIG{__DIE__} = 'DB::diehard' if $dieLevel >= 2; |
1238 | print $OUT "Stack dump during die enabled", |
1239 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"; |
1240 | print $OUT "Dump printed too.\n" if $dieLevel > 2; |
1241 | } else { |
1242 | $SIG{__DIE__} = $prevdie; |
1243 | print $OUT "Default die handler restored.\n"; |
1244 | } |
1245 | } |
1246 | $dieLevel; |
1247 | } |
1248 | |
1249 | sub signalLevel { |
1250 | if (@_) { |
1251 | $prevsegv = $SIG{SEGV} unless $signalLevel; |
1252 | $prevbus = $SIG{BUS} unless $signalLevel; |
1253 | $signalLevel = shift; |
1254 | if ($signalLevel) { |
1255 | $SIG{SEGV} = 'DB::diesignal'; |
1256 | $SIG{BUS} = 'DB::diesignal'; |
1257 | } else { |
1258 | $SIG{SEGV} = $prevsegv; |
1259 | $SIG{BUS} = $prevbus; |
1260 | } |
1261 | } |
1262 | $signalLevel; |
1263 | } |
1264 | |
1265 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? |
1266 | |
1267 | BEGIN { # This does not compile, alas. |
1268 | $IN = \*STDIN; # For bugs before DB::OUT has been opened |
1269 | $OUT = \*STDERR; # For errors before DB::OUT has been opened |
1270 | $sh = '!'; |
1271 | $rc = ','; |
1272 | @hist = ('?'); |
1273 | $deep = 100; # warning if stack gets this deep |
1274 | $window = 10; |
1275 | $preview = 3; |
1276 | $sub = ''; |
1277 | #$SIG{__WARN__} = "DB::dbwarn"; |
1278 | #$SIG{__DIE__} = 'DB::dbdie'; |
1279 | #$SIG{SEGV} = "DB::diesignal"; |
1280 | #$SIG{BUS} = "DB::diesignal"; |
1281 | $SIG{INT} = "DB::catch"; |
1282 | #$SIG{FPE} = "DB::catch"; |
1283 | #warn "SIGFPE installed"; |
1284 | $warnLevel = 1 unless defined $warnLevel; |
1285 | $dieLevel = 1 unless defined $dieLevel; |
1286 | $signalLevel = 1 unless defined $signalLevel; |
1287 | |
1288 | $db_stop = 0; # Compiler warning |
1289 | $db_stop = 1 << 30; |
1290 | $level = 0; # Level of recursive debugging |
1291 | } |
1292 | |
1293 | #use Carp; # This did break, left for debuggin |
1294 | |
1295 | 1; |
1296 | package DB; |
1297 | |
f0fcb552 |
1298 | # modified Perl debugger, to be run from Emacs in perldb-mode |
1299 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
1300 | # Johan Vromans -- upgrade to 4.0 pl 10 |
1301 | |
a0d0e21e |
1302 | $header = '$RCSfile: perl5db.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:07 $'; |
a687059c |
1303 | # |
1304 | # This file is automatically included if you do perl -d. |
1305 | # It's probably not useful to include this yourself. |
1306 | # |
1307 | # Perl supplies the values for @line and %sub. It effectively inserts |
a0d0e21e |
1308 | # a &DB'DB(<linenum>); in front of every place that can |
a687059c |
1309 | # have a breakpoint. It also inserts a do 'perldb.pl' before the first line. |
1310 | # |
1311 | # $Log: perldb.pl,v $ |
a0d0e21e |
1312 | |
4633a7c4 |
1313 | # Is Perl being run from Emacs? |
1314 | $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
1315 | shift(@main::ARGV) if $emacs; |
1316 | |
1317 | #require Term::ReadLine; |
1318 | |
a0d0e21e |
1319 | local($^W) = 0; |
a687059c |
1320 | |
83025b21 |
1321 | if (-e "/dev/tty") { |
1322 | $console = "/dev/tty"; |
1323 | $rcfile=".perldb"; |
1324 | } |
a0d0e21e |
1325 | elsif (-e "con") { |
83025b21 |
1326 | $console = "con"; |
1327 | $rcfile="perldb.ini"; |
1328 | } |
a0d0e21e |
1329 | else { |
1330 | $console = "sys\$command"; |
1331 | $rcfile="perldb.ini"; |
1332 | } |
83025b21 |
1333 | |
4633a7c4 |
1334 | # Around a bug: |
1335 | if (defined $ENV{'OS2_SHELL'}) { # In OS/2 |
1336 | if ($DB::emacs) { |
1337 | $console = undef; |
1338 | } else { |
1339 | $console = "/dev/con"; |
1340 | } |
1341 | } |
1342 | |
83025b21 |
1343 | open(IN, "<$console") || open(IN, "<&STDIN"); # so we don't dingle stdin |
a0d0e21e |
1344 | open(OUT,">$console") || open(OUT, ">&STDERR") |
8990e307 |
1345 | || open(OUT, ">&STDOUT"); # so we don't dongle stdout |
a687059c |
1346 | select(OUT); |
ed6116ce |
1347 | $| = 1; # for DB::OUT |
a687059c |
1348 | select(STDOUT); |
1349 | $| = 1; # for real STDOUT |
76854fea |
1350 | $sub = ''; |
a687059c |
1351 | |
03a14243 |
1352 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
f0fcb552 |
1353 | print OUT "\nLoading DB routines from $header\n"; |
1354 | print OUT ("Emacs support ", |
1355 | $emacs ? "enabled" : "available", |
1356 | ".\n"); |
1357 | print OUT "\nEnter h for help.\n\n"; |
a687059c |
1358 | |
748a9306 |
1359 | @ARGS; |
1360 | |
a687059c |
1361 | sub DB { |
76854fea |
1362 | &save; |
748a9306 |
1363 | ($pkg, $filename, $line) = caller; |
a0d0e21e |
1364 | $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . |
748a9306 |
1365 | "package $pkg;"; # this won't let them modify, alas |
ed6116ce |
1366 | local(*dbline) = "::_<$filename"; |
76854fea |
1367 | $max = $#dbline; |
1368 | if (($stop,$action) = split(/\0/,$dbline{$line})) { |
a687059c |
1369 | if ($stop eq '1') { |
1370 | $signal |= 1; |
1371 | } |
1372 | else { |
ed6116ce |
1373 | $evalarg = "\$DB::signal |= do {$stop;}"; &eval; |
76854fea |
1374 | $dbline{$line} =~ s/;9($|\0)/$1/; |
a687059c |
1375 | } |
1376 | } |
1377 | if ($single || $trace || $signal) { |
f0fcb552 |
1378 | if ($emacs) { |
1379 | print OUT "\032\032$filename:$line:0\n"; |
1380 | } else { |
748a9306 |
1381 | $prefix = $sub =~ /'|::/ ? "" : "${pkg}::"; |
a0d0e21e |
1382 | $prefix .= "$sub($filename:"; |
1383 | if (length($prefix) > 30) { |
1384 | print OUT "$prefix$line):\n$line:\t",$dbline[$line]; |
1385 | $prefix = ""; |
1386 | $infix = ":\t"; |
1387 | } |
1388 | else { |
1389 | $infix = "):\t"; |
1390 | print OUT "$prefix$line$infix",$dbline[$line]; |
1391 | } |
f0fcb552 |
1392 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { |
1393 | last if $dbline[$i] =~ /^\s*(}|#|\n)/; |
a0d0e21e |
1394 | print OUT "$prefix$i$infix",$dbline[$i]; |
f0fcb552 |
1395 | } |
a687059c |
1396 | } |
1397 | } |
27e2fb84 |
1398 | $evalarg = $action, &eval if $action; |
a687059c |
1399 | if ($single || $signal) { |
27e2fb84 |
1400 | $evalarg = $pre, &eval if $pre; |
a687059c |
1401 | print OUT $#stack . " levels deep in subroutine calls!\n" |
1402 | if $single & 4; |
1403 | $start = $line; |
fe14fcc3 |
1404 | CMD: |
76854fea |
1405 | while ((print OUT " DB<", $#hist+1, "> "), $cmd=&gets) { |
fe14fcc3 |
1406 | { |
1407 | $single = 0; |
1408 | $signal = 0; |
1409 | $cmd eq '' && exit 0; |
1410 | chop($cmd); |
1411 | $cmd =~ s/\\$// && do { |
1412 | print OUT " cont: "; |
1413 | $cmd .= &gets; |
1414 | redo CMD; |
1415 | }; |
1416 | $cmd =~ /^q$/ && exit 0; |
1417 | $cmd =~ /^$/ && ($cmd = $laststep); |
1418 | push(@hist,$cmd) if length($cmd) > 1; |
1419 | ($i) = split(/\s+/,$cmd); |
1420 | eval "\$cmd =~ $alias{$i}", print OUT $@ if $alias{$i}; |
1421 | $cmd =~ /^h$/ && do { |
1422 | print OUT " |
a687059c |
1423 | T Stack trace. |
1424 | s Single step. |
1425 | n Next, steps over subroutine calls. |
76854fea |
1426 | r Return from current subroutine. |
a687059c |
1427 | c [line] Continue; optionally inserts a one-time-only breakpoint |
1428 | at the specified line. |
1429 | <CR> Repeat last n or s. |
1430 | l min+incr List incr+1 lines starting at min. |
1431 | l min-max List lines. |
1432 | l line List line; |
1433 | l List next window. |
1434 | - List previous window. |
1435 | w line List window around line. |
1436 | l subname List subroutine. |
76854fea |
1437 | f filename Switch to filename. |
a687059c |
1438 | /pattern/ Search forwards for pattern; final / is optional. |
1439 | ?pattern? Search backwards for pattern. |
1440 | L List breakpoints and actions. |
1441 | S List subroutine names. |
1442 | t Toggle trace mode. |
1443 | b [line] [condition] |
1444 | Set breakpoint; line defaults to the current execution line; |
1445 | condition breaks if it evaluates to true, defaults to \'1\'. |
1446 | b subname [condition] |
1447 | Set breakpoint at first line of subroutine. |
1448 | d [line] Delete breakpoint. |
1449 | D Delete all breakpoints. |
1450 | a [line] command |
1451 | Set an action to be done before the line is executed. |
1452 | Sequence is: check for breakpoint, print line if necessary, |
1453 | do action, prompt user if breakpoint or step, evaluate line. |
1454 | A Delete all actions. |
76854fea |
1455 | V [pkg [vars]] List some (default all) variables in package (default current). |
1456 | X [vars] Same as \"V currentpackage [vars]\". |
a687059c |
1457 | < command Define command before prompt. |
1458 | > command Define command after prompt. |
1459 | ! number Redo command (default previous command). |
1460 | ! -number Redo number\'th to last command. |
1461 | H -number Display last number commands (default all). |
1462 | q or ^D Quit. |
ed6116ce |
1463 | p expr Same as \"print DB::OUT expr\" in current package. |
33b78306 |
1464 | = [alias value] Define a command alias, or list current aliases. |
76854fea |
1465 | command Execute as a perl statement in current package. |
a687059c |
1466 | |
1467 | "; |
fe14fcc3 |
1468 | next CMD; }; |
1469 | $cmd =~ /^t$/ && do { |
1470 | $trace = !$trace; |
1471 | print OUT "Trace = ".($trace?"on":"off")."\n"; |
1472 | next CMD; }; |
1473 | $cmd =~ /^S$/ && do { |
1474 | foreach $subname (sort(keys %sub)) { |
1475 | print OUT $subname,"\n"; |
1476 | } |
1477 | next CMD; }; |
748a9306 |
1478 | $cmd =~ s/^X\b/V $pkg/; |
fe14fcc3 |
1479 | $cmd =~ /^V$/ && do { |
748a9306 |
1480 | $cmd = "V $pkg"; }; |
fe14fcc3 |
1481 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
79072805 |
1482 | local ($savout) = select(OUT); |
fe14fcc3 |
1483 | $packname = $1; |
1484 | @vars = split(' ',$2); |
ed6116ce |
1485 | do 'dumpvar.pl' unless defined &main::dumpvar; |
1486 | if (defined &main::dumpvar) { |
1487 | &main::dumpvar($packname,@vars); |
fe14fcc3 |
1488 | } |
1489 | else { |
ed6116ce |
1490 | print DB::OUT "dumpvar.pl not available.\n"; |
76854fea |
1491 | } |
79072805 |
1492 | select ($savout); |
fe14fcc3 |
1493 | next CMD; }; |
1494 | $cmd =~ /^f\b\s*(.*)/ && do { |
1495 | $file = $1; |
1496 | if (!$file) { |
1497 | print OUT "The old f command is now the r command.\n"; |
1498 | print OUT "The new f command switches filenames.\n"; |
1499 | next CMD; |
a687059c |
1500 | } |
a0d0e21e |
1501 | if (!defined $main::{'_<' . $file}) { |
1502 | if (($try) = grep(m#^_<.*$file#, keys %main::)) { |
fe14fcc3 |
1503 | $file = substr($try,2); |
1504 | print "\n$file:\n"; |
76854fea |
1505 | } |
1506 | } |
a0d0e21e |
1507 | if (!defined $main::{'_<' . $file}) { |
fe14fcc3 |
1508 | print OUT "There's no code here anything matching $file.\n"; |
1509 | next CMD; |
1510 | } |
1511 | elsif ($file ne $filename) { |
ed6116ce |
1512 | *dbline = "::_<$file"; |
fe14fcc3 |
1513 | $max = $#dbline; |
1514 | $filename = $file; |
1515 | $start = 1; |
1516 | $cmd = "l"; |
1517 | } }; |
ed6116ce |
1518 | $cmd =~ /^l\b\s*([':A-Za-z_][':\w]*)/ && do { |
fe14fcc3 |
1519 | $subname = $1; |
ed6116ce |
1520 | $subname = "main::" . $subname unless $subname =~ /'|::/; |
1521 | $subname = "main" . $subname if substr($subname,0,1)eq "'"; |
1522 | $subname = "main" . $subname if substr($subname,0,2)eq "::"; |
567d72c2 |
1523 | # VMS filespecs may (usually do) contain ':', so don't use split |
1524 | ($file,$subrange) = $sub{$subname} =~ /(.*):(.*)/; |
fe14fcc3 |
1525 | if ($file ne $filename) { |
ed6116ce |
1526 | *dbline = "::_<$file"; |
fe14fcc3 |
1527 | $max = $#dbline; |
1528 | $filename = $file; |
1529 | } |
1530 | if ($subrange) { |
1531 | if (eval($subrange) < -$window) { |
1532 | $subrange =~ s/-.*/+/; |
1533 | } |
1534 | $cmd = "l $subrange"; |
1535 | } else { |
1536 | print OUT "Subroutine $1 not found.\n"; |
1537 | next CMD; |
1538 | } }; |
1539 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
1540 | $incr = $window - 1; |
1541 | $start = $1 if $1; |
1542 | $start -= $preview; |
1543 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
1544 | $cmd =~ /^-$/ && do { |
1545 | $incr = $window - 1; |
1546 | $cmd = 'l ' . ($start-$window*2) . '+'; }; |
1547 | $cmd =~ /^l$/ && do { |
1548 | $incr = $window - 1; |
1549 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
1550 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { |
1551 | $start = $1 if $1; |
1552 | $incr = $2; |
1553 | $incr = $window - 1 unless $incr; |
1554 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
1555 | $cmd =~ /^l\b\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
1556 | $end = (!$2) ? $max : ($4 ? $4 : $2); |
1557 | $end = $max if $end > $max; |
1558 | $i = $2; |
1559 | $i = $line if $i eq '.'; |
1560 | $i = 1 if $i < 1; |
f0fcb552 |
1561 | if ($emacs) { |
1562 | print OUT "\032\032$filename:$i:0\n"; |
1563 | $i = $end; |
1564 | } else { |
1565 | for (; $i <= $end; $i++) { |
1566 | print OUT "$i:\t", $dbline[$i]; |
1567 | last if $signal; |
1568 | } |
a687059c |
1569 | } |
fe14fcc3 |
1570 | $start = $i; # remember in case they want more |
1571 | $start = $max if $start > $max; |
1572 | next CMD; }; |
1573 | $cmd =~ /^D$/ && do { |
1574 | print OUT "Deleting all breakpoints...\n"; |
1575 | for ($i = 1; $i <= $max ; $i++) { |
1576 | if (defined $dbline{$i}) { |
1577 | $dbline{$i} =~ s/^[^\0]+//; |
1578 | if ($dbline{$i} =~ s/^\0?$//) { |
1579 | delete $dbline{$i}; |
1580 | } |
1581 | } |
1582 | } |
1583 | next CMD; }; |
1584 | $cmd =~ /^L$/ && do { |
1585 | for ($i = 1; $i <= $max; $i++) { |
1586 | if (defined $dbline{$i}) { |
1587 | print OUT "$i:\t", $dbline[$i]; |
1588 | ($stop,$action) = split(/\0/, $dbline{$i}); |
1589 | print OUT " break if (", $stop, ")\n" |
1590 | if $stop; |
1591 | print OUT " action: ", $action, "\n" |
1592 | if $action; |
1593 | last if $signal; |
1594 | } |
1595 | } |
1596 | next CMD; }; |
ed6116ce |
1597 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
fe14fcc3 |
1598 | $subname = $1; |
1599 | $cond = $2 || '1'; |
748a9306 |
1600 | $subname = "${pkg}::" . $subname |
a0d0e21e |
1601 | unless $subname =~ /'|::/; |
fe14fcc3 |
1602 | $subname = "main" . $subname if substr($subname,0,1) eq "'"; |
ed6116ce |
1603 | $subname = "main" . $subname if substr($subname,0,2) eq "::"; |
567d72c2 |
1604 | # VMS filespecs may (usually do) contain ':', so don't use split |
1605 | ($filename,$i) = $sub{$subname} =~ /(.*):(.*)/; |
83025b21 |
1606 | $i += 0; |
fe14fcc3 |
1607 | if ($i) { |
ed6116ce |
1608 | *dbline = "::_<$filename"; |
fe14fcc3 |
1609 | ++$i while $dbline[$i] == 0 && $i < $#dbline; |
1610 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
1611 | } else { |
1612 | print OUT "Subroutine $subname not found.\n"; |
76854fea |
1613 | } |
fe14fcc3 |
1614 | next CMD; }; |
1615 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { |
1616 | $i = ($1?$1:$line); |
1617 | $cond = $2 || '1'; |
76854fea |
1618 | if ($dbline[$i] == 0) { |
fe14fcc3 |
1619 | print OUT "Line $i not breakable.\n"; |
1620 | } else { |
1621 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
a687059c |
1622 | } |
fe14fcc3 |
1623 | next CMD; }; |
1624 | $cmd =~ /^d\b\s*(\d+)?/ && do { |
1625 | $i = ($1?$1:$line); |
1626 | $dbline{$i} =~ s/^[^\0]*//; |
1627 | delete $dbline{$i} if $dbline{$i} eq ''; |
1628 | next CMD; }; |
1629 | $cmd =~ /^A$/ && do { |
1630 | for ($i = 1; $i <= $max ; $i++) { |
1631 | if (defined $dbline{$i}) { |
1632 | $dbline{$i} =~ s/\0[^\0]*//; |
1633 | delete $dbline{$i} if $dbline{$i} eq ''; |
76854fea |
1634 | } |
fe14fcc3 |
1635 | } |
1636 | next CMD; }; |
1637 | $cmd =~ /^<\s*(.*)/ && do { |
a0d0e21e |
1638 | $pre = action($1); |
fe14fcc3 |
1639 | next CMD; }; |
1640 | $cmd =~ /^>\s*(.*)/ && do { |
a0d0e21e |
1641 | $post = action($1); |
fe14fcc3 |
1642 | next CMD; }; |
1643 | $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { |
1644 | $i = $1; |
1645 | if ($dbline[$i] == 0) { |
1646 | print OUT "Line $i may not have an action.\n"; |
1647 | } else { |
1648 | $dbline{$i} =~ s/\0[^\0]*//; |
a0d0e21e |
1649 | $dbline{$i} .= "\0" . action($3); |
fe14fcc3 |
1650 | } |
1651 | next CMD; }; |
1652 | $cmd =~ /^n$/ && do { |
1653 | $single = 2; |
1654 | $laststep = $cmd; |
1655 | last CMD; }; |
1656 | $cmd =~ /^s$/ && do { |
1657 | $single = 1; |
1658 | $laststep = $cmd; |
1659 | last CMD; }; |
1660 | $cmd =~ /^c\b\s*(\d*)\s*$/ && do { |
1661 | $i = $1; |
1662 | if ($i) { |
1663 | if ($dbline[$i] == 0) { |
1664 | print OUT "Line $i not breakable.\n"; |
1665 | next CMD; |
76854fea |
1666 | } |
fe14fcc3 |
1667 | $dbline{$i} =~ s/(\0|$)/;9$1/; # add one-time-only b.p. |
76854fea |
1668 | } |
fe14fcc3 |
1669 | for ($i=0; $i <= $#stack; ) { |
1670 | $stack[$i++] &= ~1; |
a687059c |
1671 | } |
fe14fcc3 |
1672 | last CMD; }; |
1673 | $cmd =~ /^r$/ && do { |
1674 | $stack[$#stack] |= 2; |
1675 | last CMD; }; |
1676 | $cmd =~ /^T$/ && do { |
1677 | local($p,$f,$l,$s,$h,$a,@a,@sub); |
1678 | for ($i = 1; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) { |
a0d0e21e |
1679 | @a = (); |
1680 | for $arg (@args) { |
1681 | $_ = "$arg"; |
ed6116ce |
1682 | s/'/\\'/g; |
a0d0e21e |
1683 | s/([^\0]*)/'$1'/ |
1684 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
ed6116ce |
1685 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
1686 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
a0d0e21e |
1687 | push(@a, $_); |
fe14fcc3 |
1688 | } |
1689 | $w = $w ? '@ = ' : '$ = '; |
1690 | $a = $h ? '(' . join(', ', @a) . ')' : ''; |
a0d0e21e |
1691 | push(@sub, "$w$s$a from file $f line $l\n"); |
fe14fcc3 |
1692 | last if $signal; |
a687059c |
1693 | } |
fe14fcc3 |
1694 | for ($i=0; $i <= $#sub; $i++) { |
1695 | last if $signal; |
1696 | print OUT $sub[$i]; |
a687059c |
1697 | } |
fe14fcc3 |
1698 | next CMD; }; |
1699 | $cmd =~ /^\/(.*)$/ && do { |
1700 | $inpat = $1; |
1701 | $inpat =~ s:([^\\])/$:$1:; |
1702 | if ($inpat ne "") { |
a0d0e21e |
1703 | eval '$inpat =~ m'."\a$inpat\a"; |
fe14fcc3 |
1704 | if ($@ ne "") { |
1705 | print OUT "$@"; |
1706 | next CMD; |
1707 | } |
1708 | $pat = $inpat; |
a687059c |
1709 | } |
fe14fcc3 |
1710 | $end = $start; |
1711 | eval ' |
1712 | for (;;) { |
1713 | ++$start; |
1714 | $start = 1 if ($start > $max); |
1715 | last if ($start == $end); |
a0d0e21e |
1716 | if ($dbline[$start] =~ m'."\a$pat\a".'i) { |
f0fcb552 |
1717 | if ($emacs) { |
1718 | print OUT "\032\032$filename:$start:0\n"; |
1719 | } else { |
1720 | print OUT "$start:\t", $dbline[$start], "\n"; |
1721 | } |
fe14fcc3 |
1722 | last; |
1723 | } |
1724 | } '; |
1725 | print OUT "/$pat/: not found\n" if ($start == $end); |
1726 | next CMD; }; |
1727 | $cmd =~ /^\?(.*)$/ && do { |
1728 | $inpat = $1; |
1729 | $inpat =~ s:([^\\])\?$:$1:; |
1730 | if ($inpat ne "") { |
a0d0e21e |
1731 | eval '$inpat =~ m'."\a$inpat\a"; |
fe14fcc3 |
1732 | if ($@ ne "") { |
1733 | print OUT "$@"; |
1734 | next CMD; |
1735 | } |
1736 | $pat = $inpat; |
1737 | } |
1738 | $end = $start; |
1739 | eval ' |
1740 | for (;;) { |
1741 | --$start; |
1742 | $start = $max if ($start <= 0); |
1743 | last if ($start == $end); |
a0d0e21e |
1744 | if ($dbline[$start] =~ m'."\a$pat\a".'i) { |
f0fcb552 |
1745 | if ($emacs) { |
1746 | print OUT "\032\032$filename:$start:0\n"; |
1747 | } else { |
1748 | print OUT "$start:\t", $dbline[$start], "\n"; |
1749 | } |
fe14fcc3 |
1750 | last; |
1751 | } |
1752 | } '; |
1753 | print OUT "?$pat?: not found\n" if ($start == $end); |
1754 | next CMD; }; |
1755 | $cmd =~ /^!+\s*(-)?(\d+)?$/ && do { |
1756 | pop(@hist) if length($cmd) > 1; |
1757 | $i = ($1?($#hist-($2?$2:1)):($2?$2:$#hist)); |
1758 | $cmd = $hist[$i] . "\n"; |
1759 | print OUT $cmd; |
1760 | redo CMD; }; |
1761 | $cmd =~ /^!(.+)$/ && do { |
1762 | $pat = "^$1"; |
1763 | pop(@hist) if length($cmd) > 1; |
1764 | for ($i = $#hist; $i; --$i) { |
1765 | last if $hist[$i] =~ $pat; |
1766 | } |
1767 | if (!$i) { |
1768 | print OUT "No such command!\n\n"; |
1769 | next CMD; |
1770 | } |
1771 | $cmd = $hist[$i] . "\n"; |
1772 | print OUT $cmd; |
1773 | redo CMD; }; |
1774 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
1775 | $end = $2?($#hist-$2):0; |
1776 | $hist = 0 if $hist < 0; |
1777 | for ($i=$#hist; $i>$end; $i--) { |
1778 | print OUT "$i: ",$hist[$i],"\n" |
1779 | unless $hist[$i] =~ /^.?$/; |
1780 | }; |
1781 | next CMD; }; |
ed6116ce |
1782 | $cmd =~ s/^p( .*)?$/print DB::OUT$1/; |
fe14fcc3 |
1783 | $cmd =~ /^=/ && do { |
1784 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { |
1785 | $alias{$k}="s~$k~$v~"; |
1786 | print OUT "$k = $v\n"; |
1787 | } elsif ($cmd =~ /^=\s*$/) { |
1788 | foreach $k (sort keys(%alias)) { |
1789 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { |
1790 | print OUT "$k = $v\n"; |
1791 | } else { |
1792 | print OUT "$k\t$alias{$k}\n"; |
1793 | }; |
33b78306 |
1794 | }; |
1795 | }; |
fe14fcc3 |
1796 | next CMD; }; |
1797 | } |
27e2fb84 |
1798 | $evalarg = $cmd; &eval; |
76854fea |
1799 | print OUT "\n"; |
a687059c |
1800 | } |
1801 | if ($post) { |
27e2fb84 |
1802 | $evalarg = $post; &eval; |
a687059c |
1803 | } |
1804 | } |
748a9306 |
1805 | ($@, $!, $,, $/, $\, $^W) = @saved; |
1806 | (); |
76854fea |
1807 | } |
1808 | |
1809 | sub save { |
a0d0e21e |
1810 | @saved = ($@, $!, $,, $/, $\, $^W); |
1811 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
76854fea |
1812 | } |
1813 | |
27e2fb84 |
1814 | # The following takes its argument via $evalarg to preserve current @_ |
1815 | |
76854fea |
1816 | sub eval { |
ed6116ce |
1817 | eval "$usercontext $evalarg; &DB::save"; |
76854fea |
1818 | print OUT $@; |
a687059c |
1819 | } |
1820 | |
1821 | sub action { |
1822 | local($action) = @_; |
1823 | while ($action =~ s/\\$//) { |
1824 | print OUT "+ "; |
76854fea |
1825 | $action .= &gets; |
a687059c |
1826 | } |
1827 | $action; |
1828 | } |
1829 | |
76854fea |
1830 | sub gets { |
1831 | local($.); |
1832 | <IN>; |
1833 | } |
1834 | |
a687059c |
1835 | sub catch { |
1836 | $signal = 1; |
1837 | } |
1838 | |
1839 | sub sub { |
1840 | push(@stack, $single); |
1841 | $single &= 1; |
1842 | $single |= 4 if $#stack == $deep; |
a687059c |
1843 | if (wantarray) { |
1844 | @i = &$sub; |
79a0689e |
1845 | $single |= pop(@stack); |
1846 | @i; |
a687059c |
1847 | } |
1848 | else { |
1849 | $i = &$sub; |
79a0689e |
1850 | $single |= pop(@stack); |
1851 | $i; |
a687059c |
1852 | } |
a687059c |
1853 | } |
1854 | |
a0d0e21e |
1855 | $trace = $signal = $single = 0; # uninitialized warning suppression |
1856 | |
a687059c |
1857 | @hist = ('?'); |
ed6116ce |
1858 | $SIG{'INT'} = "DB::catch"; |
a687059c |
1859 | $deep = 100; # warning if stack gets this deep |
1860 | $window = 10; |
1861 | $preview = 3; |
1862 | |
1863 | @stack = (0); |
76854fea |
1864 | @ARGS = @ARGV; |
a687059c |
1865 | for (@args) { |
1866 | s/'/\\'/g; |
1867 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
1868 | } |
a687059c |
1869 | |
83025b21 |
1870 | if (-f $rcfile) { |
1871 | do "./$rcfile"; |
a687059c |
1872 | } |
83025b21 |
1873 | elsif (-f "$ENV{'LOGDIR'}/$rcfile") { |
1874 | do "$ENV{'LOGDIR'}/$rcfile"; |
a687059c |
1875 | } |
83025b21 |
1876 | elsif (-f "$ENV{'HOME'}/$rcfile") { |
1877 | do "$ENV{'HOME'}/$rcfile"; |
a687059c |
1878 | } |
1879 | |
1880 | 1; |