3 # Debugger for Perl 5.00x; perl5db.pl patch level:
6 $header = "perl5db.pl version $VERSION";
9 # This file is automatically included if you do perl -d.
10 # It's probably not useful to include this yourself.
12 # Perl supplies the values for %sub. It effectively inserts
13 # a &DB'DB(); in front of every place that can have a
14 # breakpoint. Instead of a subroutine call it calls &DB::sub with
15 # $DB::sub being the called subroutine. It also inserts a BEGIN
16 # {require 'perl5db.pl'} before the first line.
18 # After each `require'd file is compiled, but before it is executed, a
19 # call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
20 # $filename is the expanded name of the `require'd file (as found as
23 # Additional services from Perl interpreter:
25 # if caller() is called from the package DB, it provides some
28 # The array @{$main::{'_<'.$filename} is the line-by-line contents of
31 # The hash %{'_<'.$filename} contains breakpoints and action (it is
32 # keyed by line number), and individual entries are settable (as
33 # opposed to the whole hash). Only true/false is important to the
34 # interpreter, though the values used by perl5db.pl have the form
35 # "$break_condition\0$action". Values are magical in numeric context.
37 # The scalar ${'_<'.$filename} contains "_<$filename".
39 # Note that no subroutine call is possible until &DB::sub is defined
40 # (for subroutines defined outside of the package DB). In fact the same is
41 # true if $deep is not defined.
46 # At start reads $rcfile that may set important options. This file
47 # may define a subroutine &afterinit that will be executed after the
48 # debugger is initialized.
50 # After $rcfile is read reads environment variable PERLDB_OPTS and parses
51 # it as a rest of `O ...' line in debugger prompt.
53 # The options that can be specified only at startup:
54 # [To set in $rcfile, call &parse_options("optionName=new_value").]
56 # TTY - the TTY to use for debugging i/o.
58 # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set
59 # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using
60 # Term::Rendezvous. Current variant is to have the name of TTY in this
63 # ReadLine - If false, dummy ReadLine is used, so you can debug
64 # ReadLine applications.
66 # NonStop - if true, no i/o is performed until interrupt.
68 # LineInfo - file or pipe to print line number info to. If it is a
69 # pipe, a short "emacs like" message is used.
71 # RemotePort - host:port to connect to on remote host for remote debugging.
73 # Example $rcfile: (delete leading hashes!)
75 # &parse_options("NonStop=1 LineInfo=db.out");
76 # sub afterinit { $trace = 1; }
78 # The script will run without human intervention, putting trace
79 # information into db.out. (If you interrupt it, you would better
80 # reset LineInfo to something "interactive"!)
82 ##################################################################
84 # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
85 # Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
87 # modified Perl debugger, to be run from Emacs in perldb-mode
88 # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
89 # Johan Vromans -- upgrade to 4.0 pl 10
90 # Ilya Zakharevich -- patches after 5.001 (and some before ;-)
94 # A lot of things changed after 0.94. First of all, core now informs
95 # debugger about entry into XSUBs, overloaded operators, tied operations,
96 # BEGIN and END. Handy with `O f=2'.
98 # This can make debugger a little bit too verbose, please be patient
99 # and report your problems promptly.
101 # Now the option frame has 3 values: 0,1,2.
103 # Note that if DESTROY returns a reference to the object (or object),
104 # the deletion of data may be postponed until the next function call,
105 # due to the need to examine the return value.
107 # Changes: 0.95: `v' command shows versions.
108 # Changes: 0.96: `v' command shows version of readline.
109 # primitive completion works (dynamic variables, subs for `b' and `l',
110 # options). Can `p %var'
111 # Better help (`h <' now works). New commands <<, >>, {, {{.
112 # {dump|print}_trace() coded (to be able to do it from <<cmd).
113 # `c sub' documented.
114 # At last enough magic combined to stop after the end of debuggee.
115 # !! should work now (thanks to Emacs bracket matching an extra
116 # `]' in a regexp is caught).
117 # `L', `D' and `A' span files now (as documented).
118 # Breakpoints in `require'd code are possible (used in `R').
119 # Some additional words on internal work of debugger.
120 # `b load filename' implemented.
121 # `b postpone subr' implemented.
122 # now only `q' exits debugger (overwriteable on $inhibit_exit).
123 # When restarting debugger breakpoints/actions persist.
124 # Buglet: When restarting debugger only one breakpoint/action per
125 # autoloaded function persists.
126 # Changes: 0.97: NonStop will not stop in at_exit().
127 # Option AutoTrace implemented.
128 # Trace printed differently if frames are printed too.
129 # new `inhibitExit' option.
130 # printing of a very long statement interruptible.
131 # Changes: 0.98: New command `m' for printing possible methods
132 # 'l -' is a synonim for `-'.
133 # Cosmetic bugs in printing stack trace.
134 # `frame' & 8 to print "expanded args" in stack trace.
135 # Can list/break in imported subs.
136 # new `maxTraceLen' option.
137 # frame & 4 and frame & 8 granted.
139 # nonstoppable lines do not have `:' near the line number.
140 # `b compile subname' implemented.
141 # Will not use $` any more.
142 # `-' behaves sane now.
143 # Changes: 0.99: Completion for `f', `m'.
144 # `m' will remove duplicate names instead of duplicate functions.
145 # `b load' strips trailing whitespace.
146 # completion ignores leading `|'; takes into account current package
147 # when completing a subroutine name (same for `l').
148 # Changes: 1.07: Many fixed by tchrist 13-March-2000
150 # + Added bare mimimal security checks on perldb rc files, plus
151 # comments on what else is needed.
152 # + Fixed the ornaments that made "|h" completely unusable.
153 # They are not used in print_help if they will hurt. Strip pod
154 # if we're paging to less.
155 # + Fixed mis-formatting of help messages caused by ornaments
156 # to restore Larry's original formatting.
157 # + Fixed many other formatting errors. The code is still suboptimal,
158 # and needs a lot of work at restructuing. It's also misindented
160 # + Fixed bug where trying to look at an option like your pager
162 # + Fixed some $? processing. Note: if you use csh or tcsh, you will
163 # lose. You should consider shell escapes not using their shell,
164 # or else not caring about detailed status. This should really be
165 # unified into one place, too.
166 # + Fixed bug where invisible trailing whitespace on commands hoses you,
167 # tricking Perl into thinking you wern't calling a debugger command!
168 # + Fixed bug where leading whitespace on commands hoses you. (One
169 # suggests a leading semicolon or any other irrelevant non-whitespace
170 # to indicate literal Perl code.)
171 # + Fixed bugs that ate warnings due to wrong selected handle.
172 # + Fixed a precedence bug on signal stuff.
173 # + Fixed some unseemly wording.
174 # + Fixed bug in help command trying to call perl method code.
175 # + Fixed to call dumpvar from exception handler. SIGPIPE killed us.
177 # + Added some comments. This code is still nasty spaghetti.
178 # + Added message if you clear your pre/post command stacks which was
179 # very easy to do if you just typed a bare >, <, or {. (A command
180 # without an argument should *never* be a destructive action; this
181 # API is fundamentally screwed up; likewise option setting, which
182 # is equally buggered.)
183 # + Added command stack dump on argument of "?" for >, <, or {.
184 # + Added a semi-built-in doc viewer command that calls man with the
185 # proper %Config::Config path (and thus gets caching, man -k, etc),
186 # or else perldoc on obstreperous platforms.
187 # + Added to and rearranged the help information.
188 # + Detected apparent misuse of { ... } to declare a block; this used
189 # to work but now is a command, and mysteriously gave no complaint.
191 ####################################################################
193 # Needed for the statement after exec():
195 BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN.
196 local($^W) = 0; # Switch run-time warnings off during init.
199 $dumpvar::arrayDepth,
200 $dumpvar::dumpDBFiles,
201 $dumpvar::dumpPackages,
202 $dumpvar::quoteHighBit,
203 $dumpvar::printUndef,
212 # Command-line + PERLLIB:
215 # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?!
217 $trace = $signal = $single = 0; # Uninitialized warning suppression
218 # (local $^W cannot help - other packages!).
219 $inhibit_exit = $option{PrintRet} = 1;
221 @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused
222 compactDump veryCompact quote HighBit undefPrint
223 globPrint PrintRet UsageOnly frame AutoTrace
224 TTY noTTY ReadLine NonStop LineInfo maxTraceLen
225 recallCommand ShellBang pager tkRunning ornaments
226 signalLevel warnLevel dieLevel inhibit_exit
227 ImmediateStop bareStringify
231 hashDepth => \$dumpvar::hashDepth,
232 arrayDepth => \$dumpvar::arrayDepth,
233 DumpDBFiles => \$dumpvar::dumpDBFiles,
234 DumpPackages => \$dumpvar::dumpPackages,
235 DumpReused => \$dumpvar::dumpReused,
236 HighBit => \$dumpvar::quoteHighBit,
237 undefPrint => \$dumpvar::printUndef,
238 globPrint => \$dumpvar::globPrint,
239 UsageOnly => \$dumpvar::usageOnly,
240 bareStringify => \$dumpvar::bareStringify,
242 AutoTrace => \$trace,
243 inhibit_exit => \$inhibit_exit,
244 maxTraceLen => \$maxtrace,
245 ImmediateStop => \$ImmediateStop,
246 RemotePort => \$remoteport,
250 compactDump => \&dumpvar::compactDump,
251 veryCompact => \&dumpvar::veryCompact,
252 quote => \&dumpvar::quote,
255 ReadLine => \&ReadLine,
256 NonStop => \&NonStop,
257 LineInfo => \&LineInfo,
258 recallCommand => \&recallCommand,
259 ShellBang => \&shellBang,
261 signalLevel => \&signalLevel,
262 warnLevel => \&warnLevel,
263 dieLevel => \&dieLevel,
264 tkRunning => \&tkRunning,
265 ornaments => \&ornaments,
266 RemotePort => \&RemotePort,
270 compactDump => 'dumpvar.pl',
271 veryCompact => 'dumpvar.pl',
272 quote => 'dumpvar.pl',
275 # These guys may be defined in $ENV{PERL5DB} :
276 $rl = 1 unless defined $rl;
277 $warnLevel = 1 unless defined $warnLevel;
278 $dieLevel = 1 unless defined $dieLevel;
279 $signalLevel = 1 unless defined $signalLevel;
280 $pre = [] unless defined $pre;
281 $post = [] unless defined $post;
282 $pretype = [] unless defined $pretype;
284 warnLevel($warnLevel);
286 signalLevel($signalLevel);
289 (defined($ENV{PAGER})
293 : 'more'))) unless defined $pager;
295 &recallCommand("!") unless defined $prc;
296 &shellBang("!") unless defined $psh;
297 $maxtrace = 400 unless defined $maxtrace;
299 if (-e "/dev/tty") { # this is the wrong metric!
302 $rcfile="perldb.ini";
305 # This isn't really safe, because there's a race
306 # between checking and opening. The solution is to
307 # open and fstat the handle, but then you have to read and
308 # eval the contents. But then the silly thing gets
309 # your lexical scope, which is unfortunately at best.
313 # Just exactly what part of the word "CORE::" don't you understand?
314 local $SIG{__WARN__};
317 unless (is_safe_file($file)) {
318 CORE::warn <<EO_GRIPE;
319 perldb: Must not source insecure rcfile $file.
320 You or the superuser must be the owner, and it must not
321 be writable by anyone but its owner.
327 CORE::warn("perldb: couldn't parse $file: $@") if $@;
331 # Verifies that owner is either real user or superuser and that no
332 # one but owner may write to it. This function is of limited use
333 # when called on a path instead of upon a handle, because there are
334 # no guarantees that filename (by dirent) whose file (by ino) is
335 # eventually accessed is the same as the one tested.
336 # Assumes that the file's existence is not in doubt.
339 stat($path) || return; # mysteriously vaporized
340 my($dev,$ino,$mode,$nlink,$uid,$gid) = stat(_);
342 return 0 if $uid != 0 && $uid != $<;
343 return 0 if $mode & 022;
348 safe_do("./$rcfile");
350 elsif (defined $ENV{HOME} && -f "$ENV{HOME}/$rcfile") {
351 safe_do("$ENV{HOME}/$rcfile");
353 elsif (defined $ENV{LOGDIR} && -f "$ENV{LOGDIR}/$rcfile") {
354 safe_do("$ENV{LOGDIR}/$rcfile");
357 if (defined $ENV{PERLDB_OPTS}) {
358 parse_options($ENV{PERLDB_OPTS});
361 # Here begin the unreadable code. It needs fixing.
363 if (exists $ENV{PERLDB_RESTART}) {
364 delete $ENV{PERLDB_RESTART};
366 @hist = get_list('PERLDB_HIST');
367 %break_on_load = get_list("PERLDB_ON_LOAD");
368 %postponed = get_list("PERLDB_POSTPONE");
369 my @had_breakpoints= get_list("PERLDB_VISITED");
370 for (0 .. $#had_breakpoints) {
371 my %pf = get_list("PERLDB_FILE_$_");
372 $postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
374 my %opt = get_list("PERLDB_OPT");
376 while (($opt,$val) = each %opt) {
377 $val =~ s/[\\\']/\\$1/g;
378 parse_options("$opt'$val'");
380 @INC = get_list("PERLDB_INC");
382 $pretype = [get_list("PERLDB_PRETYPE")];
383 $pre = [get_list("PERLDB_PRE")];
384 $post = [get_list("PERLDB_POST")];
385 @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead);
391 # Is Perl being run from a slave editor or graphical debugger?
392 $slave_editor = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs'));
393 $rl = 0, shift(@main::ARGV) if $slave_editor;
395 #require Term::ReadLine;
397 if ($^O eq 'cygwin') {
398 # /dev/tty is binary. use stdin for textmode
400 } elsif (-e "/dev/tty") {
401 $console = "/dev/tty";
402 } elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
405 $console = "sys\$command";
408 if (($^O eq 'MSWin32') and ($slave_editor or defined $ENV{EMACS})) {
413 if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2
421 $console = $tty if defined $tty;
423 if (defined $remoteport) {
425 $OUT = new IO::Socket::INET( Timeout => '10',
426 PeerAddr => $remoteport,
429 if (!$OUT) { die "Could not create socket to connect to remote host."; }
433 if (defined $console) {
434 open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN");
435 open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR")
436 || open(OUT,">&STDOUT"); # so we don't dongle stdout
439 open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout
440 $console = 'STDIN/OUT';
442 # so open("|more") can read from STDOUT and so we don't dingle stdin
448 $| = 1; # for DB::OUT
451 $LINEINFO = $OUT unless defined $LINEINFO;
452 $lineinfo = $console unless defined $lineinfo;
454 $| = 1; # for real STDOUT
456 $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
457 unless ($runnonstop) {
458 print $OUT "\nLoading DB routines from $header\n";
459 print $OUT ("Editor support ",
460 $slave_editor ? "enabled" : "available",
462 print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
469 s/(.*)/'$1'/ unless /^-?[\d.]+$/;
472 if (defined &afterinit) { # May be defined in $rcfile
478 ############################################################ Subroutines
481 # _After_ the perl program is compiled, $single is set to 1:
482 if ($single and not $second_time++) {
483 if ($runnonstop) { # Disable until signal
484 for ($i=0; $i <= $stack_depth; ) {
488 # return; # Would not print trace!
489 } elsif ($ImmediateStop) {
494 $runnonstop = 0 if $single or $signal; # Disable it if interactive.
496 ($package, $filename, $line) = caller;
497 $filename_ini = $filename;
498 $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
499 "package $package;"; # this won't let them modify, alas
500 local(*dbline) = $main::{'_<' . $filename};
502 if (($stop,$action) = split(/\0/,$dbline{$line})) {
506 $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval;
507 $dbline{$line} =~ s/;9($|\0)/$1/;
510 my $was_signal = $signal;
512 for (my $n = 0; $n <= $#to_watch; $n++) {
513 $evalarg = $to_watch[$n];
514 local $onetimeDump; # Do not output results
515 my ($val) = &eval; # Fix context (&eval is doing array)?
516 $val = ( (defined $val) ? "'$val'" : 'undef' );
517 if ($val ne $old_watch[$n]) {
520 Watchpoint $n:\t$to_watch[$n] changed:
521 old value:\t$old_watch[$n]
524 $old_watch[$n] = $val;
528 if ($trace & 4) { # User-installed watch
529 return if watchfunction($package, $filename, $line)
530 and not $single and not $was_signal and not ($trace & ~4);
532 $was_signal = $signal;
534 if ($single || ($trace & 1) || $was_signal) {
536 $position = "\032\032$filename:$line:0\n";
537 print $LINEINFO $position;
538 } elsif ($package eq 'DB::fake') {
541 Debugged program terminated. Use B<q> to quit or B<R> to restart,
542 use B<O> I<inhibit_exit> to avoid stopping after program termination,
543 B<h q>, B<h R> or B<h O> to get additional info.
546 $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
547 "package $package;"; # this won't let them modify, alas
550 $prefix = $sub =~ /::/ ? "" : "${'package'}::";
551 $prefix .= "$sub($filename:";
552 $after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
553 if (length($prefix) > 30) {
554 $position = "$prefix$line):\n$line:\t$dbline[$line]$after";
559 $position = "$prefix$line$infix$dbline[$line]$after";
562 print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after";
564 print $LINEINFO $position;
566 for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
567 last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
569 $after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
570 $incr_pos = "$prefix$i$infix$dbline[$i]$after";
571 $position .= $incr_pos;
573 print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
575 print $LINEINFO $incr_pos;
580 $evalarg = $action, &eval if $action;
581 if ($single || $was_signal) {
582 local $level = $level + 1;
583 foreach $evalarg (@$pre) {
586 print $OUT $stack_depth . " levels deep in subroutine calls!\n"
589 $incr = -1; # for backward motion.
590 @typeahead = (@$pretype, @typeahead);
592 while (($term || &setterm),
593 ($term_pid == $$ or &resetterm),
594 defined ($cmd=&readline(" DB" . ('<' x $level) .
595 ($#hist+1) . ('>' x $level) .
600 $cmd =~ s/\\$/\n/ && do {
601 $cmd .= &readline(" cont: ");
604 $cmd =~ /^$/ && ($cmd = $laststep);
605 push(@hist,$cmd) if length($cmd) > 1;
607 ($i) = split(/\s+/,$cmd);
608 #eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
610 print STDERR "ALIAS $cmd INTO ";
611 eval "\$cmd =~ $alias{$i}";
615 $cmd =~ s/^\s+//s; # trim annoying leading whitespace
616 $cmd =~ s/\s+$//s; # trim annoying trailing whitespace
617 $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
618 $cmd =~ /^h$/ && do {
621 $cmd =~ /^h\s+h$/ && do {
622 print_help($summary);
624 # support long commands; otherwise bogus errors
625 # happen when you ask for h on <CR> for example
626 $cmd =~ /^h\s+(\S.*)$/ && do {
627 my $asked = $1; # for proper errmsg
628 my $qasked = quotemeta($asked); # for searching
629 # XXX: finds CR but not <CR>
630 if ($help =~ /^<?(?:[IB]<)$qasked/m) {
631 while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) {
635 print_help("B<$asked> is not a debugger command.\n");
638 $cmd =~ /^t$/ && do {
640 print $OUT "Trace = " .
641 (($trace & 1) ? "on" : "off" ) . "\n";
643 $cmd =~ /^S(\s+(!)?(.+))?$/ && do {
644 $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1;
645 foreach $subname (sort(keys %sub)) {
646 if ($Snocheck or $Srev^($subname =~ /$Spatt/)) {
647 print $OUT $subname,"\n";
651 $cmd =~ /^v$/ && do {
652 list_versions(); next CMD};
653 $cmd =~ s/^X\b/V $package/;
654 $cmd =~ /^V$/ && do {
655 $cmd = "V $package"; };
656 $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do {
657 local ($savout) = select($OUT);
659 @vars = split(' ',$2);
660 do 'dumpvar.pl' unless defined &main::dumpvar;
661 if (defined &main::dumpvar) {
664 # must detect sigpipe failures
665 eval { &main::dumpvar($packname,@vars) };
667 die unless $@ =~ /dumpvar print failed/;
670 print $OUT "dumpvar.pl not available.\n";
674 $cmd =~ s/^x\b/ / && do { # So that will be evaled
675 $onetimeDump = 'dump'; };
676 $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do {
677 methods($1); next CMD};
678 $cmd =~ s/^m\b/ / && do { # So this will be evaled
679 $onetimeDump = 'methods'; };
680 $cmd =~ /^f\b\s*(.*)/ && do {
684 print $OUT "The old f command is now the r command.\n";
685 print $OUT "The new f command switches filenames.\n";
688 if (!defined $main::{'_<' . $file}) {
689 if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
690 $try = substr($try,2);
691 print $OUT "Choosing $try matching `$file':\n";
695 if (!defined $main::{'_<' . $file}) {
696 print $OUT "No file matching `$file' is loaded.\n";
698 } elsif ($file ne $filename) {
699 *dbline = $main::{'_<' . $file};
705 print $OUT "Already in $file.\n";
709 $cmd =~ s/^l\s+-\s*$/-/;
710 $cmd =~ /^([lb])\b\s*(\$.*)/s && do {
713 print($OUT "Error: $@\n"), next CMD if $@;
715 print($OUT "Interpreted as: $1 $s\n");
718 $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*(\[.*\])?)/s && do {
720 $subname =~ s/\'/::/;
721 $subname = $package."::".$subname
722 unless $subname =~ /::/;
723 $subname = "main".$subname if substr($subname,0,2) eq "::";
724 @pieces = split(/:/,find_sub($subname) || $sub{$subname});
725 $subrange = pop @pieces;
726 $file = join(':', @pieces);
727 if ($file ne $filename) {
728 print $OUT "Switching to file '$file'.\n"
729 unless $slave_editor;
730 *dbline = $main::{'_<' . $file};
735 if (eval($subrange) < -$window) {
736 $subrange =~ s/-.*/+/;
738 $cmd = "l $subrange";
740 print $OUT "Subroutine $subname not found.\n";
743 $cmd =~ /^\.$/ && do {
744 $incr = -1; # for backward motion.
746 $filename = $filename_ini;
747 *dbline = $main::{'_<' . $filename};
749 print $LINEINFO $position;
751 $cmd =~ /^w\b\s*(\d*)$/ && do {
755 #print $OUT 'l ' . $start . '-' . ($start + $incr);
756 $cmd = 'l ' . $start . '-' . ($start + $incr); };
757 $cmd =~ /^-$/ && do {
758 $start -= $incr + $window + 1;
759 $start = 1 if $start <= 0;
761 $cmd = 'l ' . ($start) . '+'; };
762 $cmd =~ /^l$/ && do {
764 $cmd = 'l ' . $start . '-' . ($start + $incr); };
765 $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do {
768 $incr = $window - 1 unless $incr;
769 $cmd = 'l ' . $start . '-' . ($start + $incr); };
770 $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do {
771 $end = (!defined $2) ? $max : ($4 ? $4 : $2);
772 $end = $max if $end > $max;
774 $i = $line if $i eq '.';
778 print $OUT "\032\032$filename:$i:0\n";
781 for (; $i <= $end; $i++) {
782 ($stop,$action) = split(/\0/, $dbline{$i});
784 and $filename eq $filename_ini)
786 : ($dbline[$i]+0 ? ':' : ' ') ;
787 $arrow .= 'b' if $stop;
788 $arrow .= 'a' if $action;
789 print $OUT "$i$arrow\t", $dbline[$i];
790 $i++, last if $signal;
792 print $OUT "\n" unless $dbline[$i-1] =~ /\n$/;
794 $start = $i; # remember in case they want more
795 $start = $max if $start > $max;
797 $cmd =~ /^D$/ && do {
798 print $OUT "Deleting all breakpoints...\n";
800 for $file (keys %had_breakpoints) {
801 local *dbline = $main::{'_<' . $file};
805 for ($i = 1; $i <= $max ; $i++) {
806 if (defined $dbline{$i}) {
807 $dbline{$i} =~ s/^[^\0]+//;
808 if ($dbline{$i} =~ s/^\0?$//) {
814 if (not $had_breakpoints{$file} &= ~1) {
815 delete $had_breakpoints{$file};
819 undef %postponed_file;
820 undef %break_on_load;
822 $cmd =~ /^L$/ && do {
824 for $file (keys %had_breakpoints) {
825 local *dbline = $main::{'_<' . $file};
829 for ($i = 1; $i <= $max; $i++) {
830 if (defined $dbline{$i}) {
831 print $OUT "$file:\n" unless $was++;
832 print $OUT " $i:\t", $dbline[$i];
833 ($stop,$action) = split(/\0/, $dbline{$i});
834 print $OUT " break if (", $stop, ")\n"
836 print $OUT " action: ", $action, "\n"
843 print $OUT "Postponed breakpoints in subroutines:\n";
845 for $subname (keys %postponed) {
846 print $OUT " $subname\t$postponed{$subname}\n";
850 my @have = map { # Combined keys
851 keys %{$postponed_file{$_}}
852 } keys %postponed_file;
854 print $OUT "Postponed breakpoints in files:\n";
856 for $file (keys %postponed_file) {
857 my $db = $postponed_file{$file};
858 print $OUT " $file:\n";
859 for $line (sort {$a <=> $b} keys %$db) {
860 print $OUT " $line:\n";
861 my ($stop,$action) = split(/\0/, $$db{$line});
862 print $OUT " break if (", $stop, ")\n"
864 print $OUT " action: ", $action, "\n"
871 if (%break_on_load) {
872 print $OUT "Breakpoints on load:\n";
874 for $file (keys %break_on_load) {
875 print $OUT " $file\n";
880 print $OUT "Watch-expressions:\n";
882 for $expr (@to_watch) {
883 print $OUT " $expr\n";
888 $cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
889 my $file = $1; $file =~ s/\s+$//;
891 $break_on_load{$file} = 1;
892 $break_on_load{$::INC{$file}} = 1 if $::INC{$file};
893 $file .= '.pm', redo unless $file =~ /\./;
895 $had_breakpoints{$file} |= 1;
896 print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
898 $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
899 my $cond = $3 || '1';
900 my ($subname, $break) = ($2, $1 eq 'postpone');
901 $subname =~ s/\'/::/;
902 $subname = "${'package'}::" . $subname
903 unless $subname =~ /::/;
904 $subname = "main".$subname if substr($subname,0,2) eq "::";
905 $postponed{$subname} = $break
906 ? "break +0 if $cond" : "compile";
908 $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do {
911 $subname =~ s/\'/::/;
912 $subname = "${'package'}::" . $subname
913 unless $subname =~ /::/;
914 $subname = "main".$subname if substr($subname,0,2) eq "::";
915 # Filename below can contain ':'
916 ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
919 local $filename = $file;
920 local *dbline = $main::{'_<' . $filename};
921 $had_breakpoints{$filename} |= 1;
923 ++$i while $dbline[$i] == 0 && $i < $max;
924 $dbline{$i} =~ s/^[^\0]*/$cond/;
926 print $OUT "Subroutine $subname not found.\n";
929 $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
932 if ($dbline[$i] == 0) {
933 print $OUT "Line $i not breakable.\n";
935 $had_breakpoints{$filename} |= 1;
936 $dbline{$i} =~ s/^[^\0]*/$cond/;
939 $cmd =~ /^d\b\s*(\d*)/ && do {
941 $dbline{$i} =~ s/^[^\0]*//;
942 delete $dbline{$i} if $dbline{$i} eq '';
944 $cmd =~ /^A$/ && do {
945 print $OUT "Deleting all actions...\n";
947 for $file (keys %had_breakpoints) {
948 local *dbline = $main::{'_<' . $file};
952 for ($i = 1; $i <= $max ; $i++) {
953 if (defined $dbline{$i}) {
954 $dbline{$i} =~ s/\0[^\0]*//;
955 delete $dbline{$i} if $dbline{$i} eq '';
959 unless ($had_breakpoints{$file} &= ~2) {
960 delete $had_breakpoints{$file};
964 $cmd =~ /^O\s*$/ && do {
969 $cmd =~ /^O\s*(\S.*)/ && do {
972 $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE
973 push @$pre, action($1);
975 $cmd =~ /^>>\s*(.*)/ && do {
976 push @$post, action($1);
978 $cmd =~ /^<\s*(.*)/ && do {
980 print OUT "All < actions cleared.\n";
986 print OUT "No pre-prompt Perl actions.\n";
989 print OUT "Perl commands run before each prompt:\n";
990 for my $action ( @$pre ) {
991 print "\t< -- $action\n";
997 $cmd =~ /^>\s*(.*)/ && do {
999 print OUT "All > actions cleared.\n";
1005 print OUT "No post-prompt Perl actions.\n";
1008 print OUT "Perl commands run after each prompt:\n";
1009 for my $action ( @$post ) {
1010 print "\t> -- $action\n";
1014 $post = [action($1)];
1016 $cmd =~ /^\{\{\s*(.*)/ && do {
1017 if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,2))) {
1018 print OUT "{{ is now a debugger command\n",
1019 "use `;{{' if you mean Perl code\n";
1025 $cmd =~ /^\{\s*(.*)/ && do {
1027 print OUT "All { actions cleared.\n";
1032 unless (@$pretype) {
1033 print OUT "No pre-prompt debugger actions.\n";
1036 print OUT "Debugger commands run before each prompt:\n";
1037 for my $action ( @$pretype ) {
1038 print "\t{ -- $action\n";
1042 if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,1))) {
1043 print OUT "{ is now a debugger command\n",
1044 "use `;{' if you mean Perl code\n";
1050 $cmd =~ /^a\b\s*(\d*)\s*(.*)/ && do {
1051 $i = $1 || $line; $j = $2;
1053 if ($dbline[$i] == 0) {
1054 print $OUT "Line $i may not have an action.\n";
1056 $had_breakpoints{$filename} |= 2;
1057 $dbline{$i} =~ s/\0[^\0]*//;
1058 $dbline{$i} .= "\0" . action($j);
1061 $dbline{$i} =~ s/\0[^\0]*//;
1062 delete $dbline{$i} if $dbline{$i} eq '';
1065 $cmd =~ /^n$/ && do {
1066 end_report(), next CMD if $finished and $level <= 1;
1070 $cmd =~ /^s$/ && do {
1071 end_report(), next CMD if $finished and $level <= 1;
1075 $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
1076 end_report(), next CMD if $finished and $level <= 1;
1078 # Probably not needed, since we finish an interactive
1079 # sub-session anyway...
1080 # local $filename = $filename;
1081 # local *dbline = *dbline; # XXX Would this work?!
1082 if ($i =~ /\D/) { # subroutine name
1083 $subname = $package."::".$subname
1084 unless $subname =~ /::/;
1085 ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
1089 *dbline = $main::{'_<' . $filename};
1090 $had_breakpoints{$filename} |= 1;
1092 ++$i while $dbline[$i] == 0 && $i < $max;
1094 print $OUT "Subroutine $subname not found.\n";
1099 if ($dbline[$i] == 0) {
1100 print $OUT "Line $i not breakable.\n";
1103 $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p.
1105 for ($i=0; $i <= $stack_depth; ) {
1109 $cmd =~ /^r$/ && do {
1110 end_report(), next CMD if $finished and $level <= 1;
1111 $stack[$stack_depth] |= 1;
1112 $doret = $option{PrintRet} ? $stack_depth - 1 : -2;
1114 $cmd =~ /^R$/ && do {
1115 print $OUT "Warning: some settings and command-line options may be lost!\n";
1116 my (@script, @flags, $cl);
1117 push @flags, '-w' if $ini_warn;
1118 # Put all the old includes at the start to get
1119 # the same debugger.
1121 push @flags, '-I', $_;
1123 # Arrange for setting the old INC:
1124 set_list("PERLDB_INC", @ini_INC);
1126 for (1..$#{'::_<-e'}) { # The first line is PERL5DB
1127 chomp ($cl = ${'::_<-e'}[$_]);
1128 push @script, '-e', $cl;
1133 set_list("PERLDB_HIST",
1134 $term->Features->{getHistory}
1135 ? $term->GetHistory : @hist);
1136 my @had_breakpoints = keys %had_breakpoints;
1137 set_list("PERLDB_VISITED", @had_breakpoints);
1138 set_list("PERLDB_OPT", %option);
1139 set_list("PERLDB_ON_LOAD", %break_on_load);
1141 for (0 .. $#had_breakpoints) {
1142 my $file = $had_breakpoints[$_];
1143 *dbline = $main::{'_<' . $file};
1144 next unless %dbline or $postponed_file{$file};
1145 (push @hard, $file), next
1146 if $file =~ /^\(eval \d+\)$/;
1148 @add = %{$postponed_file{$file}}
1149 if $postponed_file{$file};
1150 set_list("PERLDB_FILE_$_", %dbline, @add);
1152 for (@hard) { # Yes, really-really...
1153 # Find the subroutines in this eval
1154 *dbline = $main::{'_<' . $_};
1155 my ($quoted, $sub, %subs, $line) = quotemeta $_;
1156 for $sub (keys %sub) {
1157 next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
1158 $subs{$sub} = [$1, $2];
1162 "No subroutines in $_, ignoring breakpoints.\n";
1165 LINES: for $line (keys %dbline) {
1166 # One breakpoint per sub only:
1167 my ($offset, $sub, $found);
1168 SUBS: for $sub (keys %subs) {
1169 if ($subs{$sub}->[1] >= $line # Not after the subroutine
1170 and (not defined $offset # Not caught
1171 or $offset < 0 )) { # or badly caught
1173 $offset = $line - $subs{$sub}->[0];
1174 $offset = "+$offset", last SUBS if $offset >= 0;
1177 if (defined $offset) {
1178 $postponed{$found} =
1179 "break $offset if $dbline{$line}";
1181 print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n";
1185 set_list("PERLDB_POSTPONE", %postponed);
1186 set_list("PERLDB_PRETYPE", @$pretype);
1187 set_list("PERLDB_PRE", @$pre);
1188 set_list("PERLDB_POST", @$post);
1189 set_list("PERLDB_TYPEAHEAD", @typeahead);
1190 $ENV{PERLDB_RESTART} = 1;
1191 #print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS";
1192 exec $^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS;
1193 print $OUT "exec failed: $!\n";
1195 $cmd =~ /^T$/ && do {
1196 print_trace($OUT, 1); # skip DB
1198 $cmd =~ /^W\s*$/ && do {
1200 @to_watch = @old_watch = ();
1202 $cmd =~ /^W\b\s*(.*)/s && do {
1206 $val = (defined $val) ? "'$val'" : 'undef' ;
1207 push @old_watch, $val;
1210 $cmd =~ /^\/(.*)$/ && do {
1212 $inpat =~ s:([^\\])/$:$1:;
1214 eval '$inpat =~ m'."\a$inpat\a";
1226 $start = 1 if ($start > $max);
1227 last if ($start == $end);
1228 if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
1229 if ($slave_editor) {
1230 print $OUT "\032\032$filename:$start:0\n";
1232 print $OUT "$start:\t", $dbline[$start], "\n";
1237 print $OUT "/$pat/: not found\n" if ($start == $end);
1239 $cmd =~ /^\?(.*)$/ && do {
1241 $inpat =~ s:([^\\])\?$:$1:;
1243 eval '$inpat =~ m'."\a$inpat\a";
1255 $start = $max if ($start <= 0);
1256 last if ($start == $end);
1257 if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
1258 if ($slave_editor) {
1259 print $OUT "\032\032$filename:$start:0\n";
1261 print $OUT "$start:\t", $dbline[$start], "\n";
1266 print $OUT "?$pat?: not found\n" if ($start == $end);
1268 $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do {
1269 pop(@hist) if length($cmd) > 1;
1270 $i = $1 ? ($#hist-($2||1)) : ($2||$#hist);
1272 print $OUT $cmd, "\n";
1274 $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
1277 $cmd =~ /^$rc([^$rc].*)$/ && do {
1279 pop(@hist) if length($cmd) > 1;
1280 for ($i = $#hist; $i; --$i) {
1281 last if $hist[$i] =~ /$pat/;
1284 print $OUT "No such command!\n\n";
1288 print $OUT $cmd, "\n";
1290 $cmd =~ /^$sh$/ && do {
1291 &system($ENV{SHELL}||"/bin/sh");
1293 $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
1294 # XXX: using csh or tcsh destroys sigint retvals!
1295 #&system($1); # use this instead
1296 &system($ENV{SHELL}||"/bin/sh","-c",$1);
1298 $cmd =~ /^H\b\s*(-(\d+))?/ && do {
1299 $end = $2 ? ($#hist-$2) : 0;
1300 $hist = 0 if $hist < 0;
1301 for ($i=$#hist; $i>$end; $i--) {
1302 print $OUT "$i: ",$hist[$i],"\n"
1303 unless $hist[$i] =~ /^.?$/;
1306 $cmd =~ /^(?:man|(?:perl)?doc)\b(?:\s+([^(]*))?$/ && do {
1309 $cmd =~ s/^p$/print {\$DB::OUT} \$_/;
1310 $cmd =~ s/^p\b/print {\$DB::OUT} /;
1311 $cmd =~ /^=/ && do {
1312 if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) {
1313 $alias{$k}="s~$k~$v~";
1314 print $OUT "$k = $v\n";
1315 } elsif ($cmd =~ /^=\s*$/) {
1316 foreach $k (sort keys(%alias)) {
1317 if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) {
1318 print $OUT "$k = $v\n";
1320 print $OUT "$k\t$alias{$k}\n";
1325 $cmd =~ /^\|\|?\s*[^|]/ && do {
1326 if ($pager =~ /^\|/) {
1327 open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
1328 open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
1330 open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT");
1333 unless ($piped=open(OUT,$pager)) {
1334 &warn("Can't pipe output to `$pager'");
1335 if ($pager =~ /^\|/) {
1336 open(OUT,">&STDOUT") # XXX: lost message
1337 || &warn("Can't restore DB::OUT");
1338 open(STDOUT,">&SAVEOUT")
1339 || &warn("Can't restore STDOUT");
1342 open(OUT,">&STDOUT") # XXX: lost message
1343 || &warn("Can't restore DB::OUT");
1347 $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
1348 && ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE});
1349 $selected= select(OUT);
1351 select( $selected ), $selected= "" unless $cmd =~ /^\|\|/;
1352 $cmd =~ s/^\|+\s*//;
1355 # XXX Local variants do not work!
1356 $cmd =~ s/^t\s/\$DB::trace |= 1;\n/;
1357 $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
1358 $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'};
1360 $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval;
1362 $onetimeDump = undef;
1363 } elsif ($term_pid == $$) {
1368 if ($pager =~ /^\|/) {
1370 # we cannot warn here: the handle is missing --tchrist
1371 close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n";
1373 # most of the $? crud was coping with broken cshisms
1375 print SAVEOUT "Pager `$pager' failed: ";
1377 print SAVEOUT "shell returned -1\n";
1380 ( $? & 127 ) ? " (SIG#".($?&127).")" : "",
1381 ( $? & 128 ) ? " -- core dumped" : "", "\n";
1383 print SAVEOUT "status ", ($? >> 8), "\n";
1387 open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
1388 open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
1389 $SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
1390 # Will stop ignoring SIGPIPE if done like nohup(1)
1391 # does SIGINT but Perl doesn't give us a choice.
1393 open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT");
1396 select($selected), $selected= "" unless $selected eq "";
1400 $exiting = 1 unless defined $cmd;
1401 foreach $evalarg (@$post) {
1404 } # if ($single || $signal)
1405 ($@, $!, $^E, $,, $/, $\, $^W) = @saved;
1409 # The following code may be executed now:
1413 my ($al, $ret, @ret) = "";
1414 if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
1417 local $stack_depth = $stack_depth + 1; # Protect from non-local exits
1418 $#stack = $stack_depth;
1419 $stack[-1] = $single;
1421 $single |= 4 if $stack_depth == $deep;
1423 ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "),
1424 # Why -1? But it works! :-(
1425 print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
1426 : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame;
1429 $single |= $stack[$stack_depth--];
1431 ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
1432 print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
1433 : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
1434 if ($doret eq $stack_depth or $frame & 16) {
1435 my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
1436 print $fh ' ' x $stack_depth if $frame & 16;
1437 print $fh "list context return from $sub:\n";
1438 dumpit($fh, \@ret );
1443 if (defined wantarray) {
1448 $single |= $stack[$stack_depth--];
1450 ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
1451 print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
1452 : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
1453 if ($doret eq $stack_depth or $frame & 16 and defined wantarray) {
1454 my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
1455 print $fh (' ' x $stack_depth) if $frame & 16;
1456 print $fh (defined wantarray
1457 ? "scalar context return from $sub: "
1458 : "void context return from $sub\n");
1459 dumpit( $fh, $ret ) if defined wantarray;
1467 @saved = ($@, $!, $^E, $,, $/, $\, $^W);
1468 $, = ""; $/ = "\n"; $\ = ""; $^W = 0;
1471 # The following takes its argument via $evalarg to preserve current @_
1474 # 'my' would make it visible from user code
1475 # but so does local! --tchrist
1478 local $otrace = $trace;
1479 local $osingle = $single;
1481 @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
1487 local $saved[0]; # Preserve the old value of $@
1491 } elsif ($onetimeDump eq 'dump') {
1492 dumpit($OUT, \@res);
1493 } elsif ($onetimeDump eq 'methods') {
1500 my $subname = shift;
1501 if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
1502 my $offset = $1 || 0;
1503 # Filename below can contain ':'
1504 my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
1507 local *dbline = $main::{'_<' . $file};
1508 local $^W = 0; # != 0 is magical below
1509 $had_breakpoints{$file} |= 1;
1511 ++$i until $dbline[$i] != 0 or $i >= $max;
1512 $dbline{$i} = delete $postponed{$subname};
1514 print $OUT "Subroutine $subname not found.\n";
1518 elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
1519 #print $OUT "In postponed_sub for `$subname'.\n";
1523 if ($ImmediateStop) {
1527 return &postponed_sub
1528 unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled.
1529 # Cannot be done before the file is compiled
1530 local *dbline = shift;
1531 my $filename = $dbline;
1532 $filename =~ s/^_<//;
1533 $signal = 1, print $OUT "'$filename' loaded...\n"
1534 if $break_on_load{$filename};
1535 print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
1536 return unless $postponed_file{$filename};
1537 $had_breakpoints{$filename} |= 1;
1538 #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
1540 for $key (keys %{$postponed_file{$filename}}) {
1541 $dbline{$key} = ${$postponed_file{$filename}}{$key};
1543 delete $postponed_file{$filename};
1547 local ($savout) = select(shift);
1548 my $osingle = $single;
1549 my $otrace = $trace;
1550 $single = $trace = 0;
1553 unless (defined &main::dumpValue) {
1556 if (defined &main::dumpValue) {
1557 &main::dumpValue(shift);
1559 print $OUT "dumpvar.pl not available.\n";
1566 # Tied method do not create a context, so may get wrong message:
1570 my @sub = dump_trace($_[0] + 1, $_[1]);
1571 my $short = $_[2]; # Print short report, next one for sub name
1573 for ($i=0; $i <= $#sub; $i++) {
1576 my $args = defined $sub[$i]{args}
1577 ? "(@{ $sub[$i]{args} })"
1579 $args = (substr $args, 0, $maxtrace - 3) . '...'
1580 if length $args > $maxtrace;
1581 my $file = $sub[$i]{file};
1582 $file = $file eq '-e' ? $file : "file `$file'" unless $short;
1584 $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace;
1586 my $sub = @_ >= 4 ? $_[3] : $s;
1587 print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n";
1589 print $fh "$sub[$i]{context} = $s$args" .
1590 " called from $file" .
1591 " line $sub[$i]{line}\n";
1598 my $count = shift || 1e9;
1601 my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context);
1602 my $nothard = not $frame & 8;
1603 local $frame = 0; # Do not want to trace this.
1604 my $otrace = $trace;
1607 $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
1612 if (not defined $arg) {
1614 } elsif ($nothard and tied $arg) {
1616 } elsif ($nothard and $type = ref $arg) {
1617 push @a, "ref($type)";
1619 local $_ = "$arg"; # Safe to stringify now - should not call f().
1622 unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
1623 s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
1624 s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
1628 $context = $context ? '@' : (defined $context ? "\$" : '.');
1629 $args = $h ? [@a] : undef;
1630 $e =~ s/\n\s*\;\s*\Z// if $e;
1631 $e =~ s/([\\\'])/\\$1/g if $e;
1633 $sub = "require '$e'";
1634 } elsif (defined $r) {
1636 } elsif ($sub eq '(eval)') {
1637 $sub = "eval {...}";
1639 push(@sub, {context => $context, sub => $sub, args => $args,
1640 file => $file, line => $line});
1649 while ($action =~ s/\\$//) {
1658 # i hate using globals!
1659 $balanced_brace_re ||= qr{
1662 (?> [^{}] + ) # Non-parens without backtracking
1664 (??{ $balanced_brace_re }) # Group with matching parens
1668 return $_[0] !~ m/$balanced_brace_re/;
1674 &readline("cont: ");
1678 # We save, change, then restore STDIN and STDOUT to avoid fork() since
1679 # some non-Unix systems can do system() but have problems with fork().
1680 open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN");
1681 open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
1682 open(STDIN,"<&IN") || &warn("Can't redirect STDIN");
1683 open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
1685 # XXX: using csh or tcsh destroys sigint retvals!
1687 open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN");
1688 open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
1693 # most of the $? crud was coping with broken cshisms
1695 &warn("(Command exited ", ($? >> 8), ")\n");
1697 &warn( "(Command died of SIG#", ($? & 127),
1698 (($? & 128) ? " -- core dumped" : "") , ")", "\n");
1708 eval { require Term::ReadLine } or die $@;
1711 open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
1712 open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
1715 my $sel = select($OUT);
1719 eval "require Term::Rendezvous;" or die $@;
1720 my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
1721 my $term_rv = new Term::Rendezvous $rv;
1723 $OUT = $term_rv->OUT;
1727 $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
1729 $term = new Term::ReadLine 'perldb', $IN, $OUT;
1731 $rl_attribs = $term->Attribs;
1732 $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
1733 if defined $rl_attribs->{basic_word_break_characters}
1734 and index($rl_attribs->{basic_word_break_characters}, ":") == -1;
1735 $rl_attribs->{special_prefixes} = '$@&%';
1736 $rl_attribs->{completer_word_break_characters} .= '$@&%';
1737 $rl_attribs->{completion_function} = \&db_complete;
1739 $LINEINFO = $OUT unless defined $LINEINFO;
1740 $lineinfo = $console unless defined $lineinfo;
1742 if ($term->Features->{setHistory} and "@hist" ne "?") {
1743 $term->SetHistory(@hist);
1745 ornaments($ornaments) if defined $ornaments;
1749 sub resetterm { # We forked, so we need a different TTY
1751 if (defined &get_fork_TTY) {
1753 } elsif (not defined $fork_TTY
1754 and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
1755 and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) {
1756 # Possibly _inside_ XTERM
1757 open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\
1762 if (defined $fork_TTY) {
1767 I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
1768 Define B<\$DB::fork_TTY>
1769 - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
1770 The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
1771 On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
1772 by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
1779 my $left = @typeahead;
1780 my $got = shift @typeahead;
1781 print $OUT "auto(-$left)", shift, $got, "\n";
1782 $term->AddHistory($got)
1783 if length($got) > 1 and defined $term->Features->{addHistory};
1788 if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) {
1791 $IN->recv( $stuff, 2048 ); # XXX: what's wrong with sysread?
1795 $term->readline(@_);
1800 my ($opt, $val)= @_;
1801 $val = option_val($opt,'N/A');
1802 $val =~ s/([\\\'])/\\$1/g;
1803 printf $OUT "%20s = '%s'\n", $opt, $val;
1807 my ($opt, $default)= @_;
1809 if (defined $optionVars{$opt}
1810 and defined ${$optionVars{$opt}}) {
1811 $val = ${$optionVars{$opt}};
1812 } elsif (defined $optionAction{$opt}
1813 and defined &{$optionAction{$opt}}) {
1814 $val = &{$optionAction{$opt}}();
1815 } elsif (defined $optionAction{$opt}
1816 and not defined $option{$opt}
1817 or defined $optionVars{$opt}
1818 and not defined ${$optionVars{$opt}}) {
1821 $val = $option{$opt};
1828 # too dangerous to let intuitive usage overwrite important things
1829 # defaultion should never be the default
1830 my %opt_needs_val = map { ( $_ => 1 ) } qw{
1831 arrayDepth hashDepth LineInfo maxTraceLen noTTY ornaments
1832 pager quote ReadLine recallCommand RemotePort ShellBang TTY
1837 s/^(\w+)(\W?)// or print($OUT "Invalid option `$_'\n"), last;
1838 my ($opt,$sep) = ($1,$2);
1841 print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last
1843 #&dump_option($opt);
1844 } elsif ($sep !~ /\S/) {
1846 $val = "1"; # this is an evil default; make 'em set it!
1847 } elsif ($sep eq "=") {
1849 if (s/ (["']) ( (?: \\. | (?! \1 ) [^\\] )* ) \1 //x) {
1851 ($val = $2) =~ s/\\([$quote\\])/$1/g;
1855 print OUT qq(Option better cleared using $opt=""\n)
1859 } else { #{ to "let some poor schmuck bounce on the % key in B<vi>."
1860 my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #}
1861 s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or
1862 print($OUT "Unclosed option value `$opt$sep$_'\n"), last;
1863 ($val = $1) =~ s/\\([\\$end])/$1/g;
1867 my $matches = grep( /^\Q$opt/ && ($option = $_), @options )
1868 || grep( /^\Q$opt/i && ($option = $_), @options );
1870 print($OUT "Unknown option `$opt'\n"), next unless $matches;
1871 print($OUT "Ambiguous option `$opt'\n"), next if $matches > 1;
1873 if ($opt_needs_val{$option} && $val_defaulted) {
1874 print $OUT "Option `$opt' is non-boolean. Use `O $option=VAL' to set, `O $option?' to query\n";
1878 $option{$option} = $val if defined $val;
1883 require '$optionRequire{$option}';
1885 } || die # XXX: shouldn't happen
1886 if defined $optionRequire{$option} &&
1889 ${$optionVars{$option}} = $val
1890 if defined $optionVars{$option} &&
1893 &{$optionAction{$option}} ($val)
1894 if defined $optionAction{$option} &&
1895 defined &{$optionAction{$option}} &&
1899 dump_option($option) unless $OUT eq \*STDERR;
1904 my ($stem,@list) = @_;
1906 $ENV{"${stem}_n"} = @list;
1907 for $i (0 .. $#list) {
1909 $val =~ s/\\/\\\\/g;
1910 $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg;
1911 $ENV{"${stem}_$i"} = $val;
1918 my $n = delete $ENV{"${stem}_n"};
1920 for $i (0 .. $n - 1) {
1921 $val = delete $ENV{"${stem}_$i"};
1922 $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge;
1930 return; # Put nothing on the stack - malloc/free land!
1934 my($msg)= join("",@_);
1935 $msg .= ": $!\n" unless $msg =~ /\n$/;
1940 if (@_ and $term and $term->Features->{newTTY}) {
1941 my ($in, $out) = shift;
1943 ($in, $out) = split /,/, $in, 2;
1947 open IN, $in or die "cannot open `$in' for read: $!";
1948 open OUT, ">$out" or die "cannot open `$out' for write: $!";
1949 $term->newTTY(\*IN, \*OUT);
1953 } elsif ($term and @_) {
1954 &warn("Too late to set TTY, enabled on next `R'!\n");
1962 &warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
1964 $notty = shift if @_;
1970 &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
1978 &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_;
1980 $remoteport = shift if @_;
1985 if (${$term->Features}{tkRunning}) {
1986 return $term->tkRunning(@_);
1988 print $OUT "tkRunning not supported by current ReadLine package.\n";
1995 &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_;
1997 $runnonstop = shift if @_;
2004 $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/;
2011 $sh = quotemeta shift;
2012 $sh .= "\\b" if $sh =~ /\w$/;
2016 $psh =~ s/\\(.)/$1/g;
2022 if (defined $term) {
2023 local ($warnLevel,$dieLevel) = (0, 1);
2024 return '' unless $term->Features->{ornaments};
2025 eval { $term->ornaments(@_) } || '';
2033 $rc = quotemeta shift;
2034 $rc .= "\\b" if $rc =~ /\w$/;
2038 $prc =~ s/\\(.)/$1/g;
2044 return $lineinfo unless @_;
2046 my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo";
2047 $slave_editor = ($stream =~ /^\|/);
2048 open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write");
2049 $LINEINFO = \*LINEINFO;
2050 my $save = select($LINEINFO);
2064 s/^Term::ReadLine::readline$/readline/;
2065 if (defined ${ $_ . '::VERSION' }) {
2066 $version{$file} = "${ $_ . '::VERSION' } from ";
2068 $version{$file} .= $INC{$file};
2070 dumpit($OUT,\%version);
2074 # XXX: make sure these are tabs between the command and explantion,
2075 # or print_help will screw up your formatting if you have
2076 # eeevil ornaments enabled. This is an insane mess.
2080 B<s> [I<expr>] Single step [in I<expr>].
2081 B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>].
2082 <B<CR>> Repeat last B<n> or B<s> command.
2083 B<r> Return from current subroutine.
2084 B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint
2085 at the specified position.
2086 B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>.
2087 B<l> I<min>B<->I<max> List lines I<min> through I<max>.
2088 B<l> I<line> List single I<line>.
2089 B<l> I<subname> List first window of lines from subroutine.
2090 B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>.
2091 B<l> List next window of lines.
2092 B<-> List previous window of lines.
2093 B<w> [I<line>] List window around I<line>.
2094 B<.> Return to the executed line.
2095 B<f> I<filename> Switch to viewing I<filename>. File must be already loaded.
2096 I<filename> may be either the full name of the file, or a regular
2097 expression matching the full file name:
2098 B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file.
2099 Evals (with saved bodies) are considered to be filenames:
2100 B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval
2101 (in the order of execution).
2102 B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional.
2103 B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional.
2104 B<L> List all breakpoints and actions.
2105 B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>.
2106 B<t> Toggle trace mode.
2107 B<t> I<expr> Trace through execution of I<expr>.
2108 B<b> [I<line>] [I<condition>]
2109 Set breakpoint; I<line> defaults to the current execution line;
2110 I<condition> breaks if it evaluates to true, defaults to '1'.
2111 B<b> I<subname> [I<condition>]
2112 Set breakpoint at first line of subroutine.
2113 B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>.
2114 B<b> B<load> I<filename> Set breakpoint on `require'ing the given file.
2115 B<b> B<postpone> I<subname> [I<condition>]
2116 Set breakpoint at first line of subroutine after
2118 B<b> B<compile> I<subname>
2119 Stop after the subroutine is compiled.
2120 B<d> [I<line>] Delete the breakpoint for I<line>.
2121 B<D> Delete all breakpoints.
2122 B<a> [I<line>] I<command>
2123 Set an action to be done before the I<line> is executed;
2124 I<line> defaults to the current execution line.
2125 Sequence is: check for breakpoint/watchpoint, print line
2126 if necessary, do action, prompt user if necessary,
2128 B<a> [I<line>] Delete the action for I<line>.
2129 B<A> Delete all actions.
2130 B<W> I<expr> Add a global watch-expression.
2131 B<W> Delete all watch-expressions.
2132 B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current).
2133 Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps.
2134 B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\".
2135 B<x> I<expr> Evals expression in array context, dumps the result.
2136 B<m> I<expr> Evals expression in array context, prints methods callable
2137 on the first element of the result.
2138 B<m> I<class> Prints methods callable via the given class.
2140 B<<> ? List Perl commands to run before each prompt.
2141 B<<> I<expr> Define Perl command to run before each prompt.
2142 B<<<> I<expr> Add to the list of Perl commands to run before each prompt.
2143 B<>> ? List Perl commands to run after each prompt.
2144 B<>> I<expr> Define Perl command to run after each prompt.
2145 B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt.
2146 B<{> I<db_command> Define debugger command to run before each prompt.
2147 B<{> ? List debugger commands to run before each prompt.
2148 B<<> I<expr> Define Perl command to run before each prompt.
2149 B<{{> I<db_command> Add to the list of debugger commands to run before each prompt.
2150 B<$prc> I<number> Redo a previous command (default previous command).
2151 B<$prc> I<-number> Redo number'th-to-last command.
2152 B<$prc> I<pattern> Redo last command that started with I<pattern>.
2153 See 'B<O> I<recallCommand>' too.
2154 B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)"
2155 . ( $rc eq $sh ? "" : "
2156 B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
2157 See 'B<O> I<shellBang>' too.
2158 B<H> I<-number> Display last number commands (default all).
2159 B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package.
2160 B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager.
2161 B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well.
2162 B<\=> [I<alias> I<value>] Define a command alias, or list current aliases.
2163 I<command> Execute as a perl statement in current package.
2164 B<v> Show versions of loaded modules.
2165 B<R> Pure-man-restart of debugger, some of debugger state
2166 and command-line options may be lost.
2167 Currently the following setting are preserved:
2168 history, breakpoints and actions, debugger B<O>ptions
2169 and the following command-line options: I<-w>, I<-I>, I<-e>.
2171 B<O> [I<opt>] ... Set boolean option to true
2172 B<O> [I<opt>B<?>] Query options
2173 B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ...
2174 Set options. Use quotes in spaces in value.
2175 I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell;
2176 I<pager> program for output of \"|cmd\";
2177 I<tkRunning> run Tk while prompting (with ReadLine);
2178 I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity;
2179 I<inhibit_exit> Allows stepping off the end of the script.
2180 I<ImmediateStop> Debugger should stop as early as possible.
2181 I<RemotePort> Remote hostname:port for remote debugging
2182 The following options affect what happens with B<V>, B<X>, and B<x> commands:
2183 I<arrayDepth>, I<hashDepth> print only first N elements ('' for all);
2184 I<compactDump>, I<veryCompact> change style of array and hash dump;
2185 I<globPrint> whether to print contents of globs;
2186 I<DumpDBFiles> dump arrays holding debugged files;
2187 I<DumpPackages> dump symbol tables of packages;
2188 I<DumpReused> dump contents of \"reused\" addresses;
2189 I<quote>, I<HighBit>, I<undefPrint> change style of string dump;
2190 I<bareStringify> Do not print the overload-stringified value;
2191 Other options include:
2192 I<PrintRet> affects printing of return value after B<r> command,
2193 I<frame> affects printing messages on entry and exit from subroutines.
2194 I<AutoTrace> affects printing messages on every possible breaking point.
2195 I<maxTraceLen> gives maximal length of evals/args listed in stack trace.
2196 I<ornaments> affects screen appearance of the command line.
2197 During startup options are initialized from \$ENV{PERLDB_OPTS}.
2198 You can put additional initialization options I<TTY>, I<noTTY>,
2199 I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
2200 `B<R>' after you set them).
2202 B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction.
2203 B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page.
2204 B<h h> Summary of debugger commands.
2205 B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the
2206 named Perl I<manpage>, or on B<$doccmd> itself if omitted.
2207 Set B<\$DB::doccmd> to change viewer.
2209 Type `|h' for a paged display if this was too hard to read.
2211 "; # Fix balance of vi % matching: } }}
2213 $summary = <<"END_SUM";
2214 I<List/search source lines:> I<Control script execution:>
2215 B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
2216 B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr]
2217 B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
2218 B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
2219 B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
2220 B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
2221 I<Debugger controls:> B<L> List break/watch/actions
2222 B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
2223 B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
2224 B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints
2225 B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line
2226 B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
2227 B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
2228 B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
2229 B<q> or B<^D> Quit B<R> Attempt a restart
2230 I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
2231 B<x>|B<m> I<expr> Evals expr in array context, dumps the result or lists methods.
2232 B<p> I<expr> Print expression (uses script's current package).
2233 B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
2234 B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
2235 B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
2236 For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs.
2238 # ')}}; # Fix balance of vi % matching
2244 # Restore proper alignment destroyed by eeevil I<> and B<>
2245 # ornaments: A pox on both their houses!
2247 # A help command will have everything up to and including
2248 # the first tab sequence paddeed into a field 16 (or if indented 20)
2249 # wide. If it's wide than that, an extra space will be added.
2251 ^ # only matters at start of line
2252 ( \040{4} | \t )* # some subcommands are indented
2253 ( < ? # so <CR> works
2254 [BI] < [^\t\n] + ) # find an eeevil ornament
2255 ( \t+ ) # original separation, discarded
2256 ( .* ) # this will now start (no earlier) than
2259 my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4);
2260 my $clean = $command;
2261 $clean =~ s/[BI]<([^>]*)>/$1/g;
2262 # replace with this whole string:
2263 (length($leadwhite) ? " " x 4 : "")
2265 . ((" " x (16 + (length($leadwhite) ? 4 : 0) - length($clean))) || " ")
2270 s{ # handle bold ornaments
2271 B < ( [^>] + | > ) >
2273 $Term::ReadLine::TermCap::rl_term_set[2]
2275 . $Term::ReadLine::TermCap::rl_term_set[3]
2278 s{ # handle italic ornaments
2279 I < ( [^>] + | > ) >
2281 $Term::ReadLine::TermCap::rl_term_set[0]
2283 . $Term::ReadLine::TermCap::rl_term_set[1]
2290 return if defined $ENV{LESS} && $ENV{LESS} =~ /r/;
2291 my $is_less = $pager =~ /\bless\b/;
2292 if ($pager =~ /\bmore\b/) {
2293 my @st_more = stat('/usr/bin/more');
2294 my @st_less = stat('/usr/bin/less');
2295 $is_less = @st_more && @st_less
2296 && $st_more[0] == $st_less[0]
2297 && $st_more[1] == $st_less[1];
2299 # changes environment!
2300 $ENV{LESS} .= 'r' if $is_less;
2306 $SIG{'ABRT'} = 'DEFAULT';
2307 kill 'ABRT', $$ if $panic++;
2308 if (defined &Carp::longmess) {
2309 local $SIG{__WARN__} = '';
2310 local $Carp::CarpLevel = 2; # mydie + confess
2311 &warn(Carp::longmess("Signal @_"));
2314 print $DB::OUT "Got signal @_\n";
2322 local $SIG{__WARN__} = '';
2323 local $SIG{__DIE__} = '';
2324 eval { require Carp } if defined $^S; # If error/warning during compilation,
2325 # require may be broken.
2326 warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
2327 return unless defined &Carp::longmess;
2328 my ($mysingle,$mytrace) = ($single,$trace);
2329 $single = 0; $trace = 0;
2330 my $mess = Carp::longmess(@_);
2331 ($single,$trace) = ($mysingle,$mytrace);
2338 local $SIG{__DIE__} = '';
2339 local $SIG{__WARN__} = '';
2340 my $i = 0; my $ineval = 0; my $sub;
2341 if ($dieLevel > 2) {
2342 local $SIG{__WARN__} = \&dbwarn;
2343 &warn(@_); # Yell no matter what
2346 if ($dieLevel < 2) {
2347 die @_ if $^S; # in eval propagate
2349 eval { require Carp } if defined $^S; # If error/warning during compilation,
2350 # require may be broken.
2352 die(@_, "\nCannot print stack trace, load with -MCarp option to see stack")
2353 unless defined &Carp::longmess;
2355 # We do not want to debug this chunk (automatic disabling works
2356 # inside DB::DB, but not in Carp).
2357 my ($mysingle,$mytrace) = ($single,$trace);
2358 $single = 0; $trace = 0;
2359 my $mess = Carp::longmess(@_);
2360 ($single,$trace) = ($mysingle,$mytrace);
2366 $prevwarn = $SIG{__WARN__} unless $warnLevel;
2369 $SIG{__WARN__} = \&DB::dbwarn;
2371 $SIG{__WARN__} = $prevwarn;
2379 $prevdie = $SIG{__DIE__} unless $dieLevel;
2382 $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2;
2383 #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2;
2384 print $OUT "Stack dump during die enabled",
2385 ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
2387 print $OUT "Dump printed too.\n" if $dieLevel > 2;
2389 $SIG{__DIE__} = $prevdie;
2390 print $OUT "Default die handler restored.\n";
2398 $prevsegv = $SIG{SEGV} unless $signalLevel;
2399 $prevbus = $SIG{BUS} unless $signalLevel;
2400 $signalLevel = shift;
2402 $SIG{SEGV} = \&DB::diesignal;
2403 $SIG{BUS} = \&DB::diesignal;
2405 $SIG{SEGV} = $prevsegv;
2406 $SIG{BUS} = $prevbus;
2414 my $name = CvGV_name_or_bust($in);
2415 defined $name ? $name : $in;
2418 sub CvGV_name_or_bust {
2420 return if $skipCvGV; # Backdoor to avoid problems if XS broken...
2421 $in = \&$in; # Hard reference...
2422 eval {require Devel::Peek; 1} or return;
2423 my $gv = Devel::Peek::CvGV($in) or return;
2424 *$gv{PACKAGE} . '::' . *$gv{NAME};
2430 return unless defined &$subr;
2431 my $name = CvGV_name_or_bust($subr);
2433 $data = $sub{$name} if defined $name;
2434 return $data if defined $data;
2437 $subr = \&$subr; # Hard reference
2440 $s = $_, last if $subr eq \&$_;
2448 $class = ref $class if ref $class;
2451 methods_via($class, '', 1);
2452 methods_via('UNIVERSAL', 'UNIVERSAL', 0);
2457 return if $packs{$class}++;
2459 my $prepend = $prefix ? "via $prefix: " : '';
2461 for $name (grep {defined &{${"${class}::"}{$_}}}
2462 sort keys %{"${class}::"}) {
2463 next if $seen{ $name }++;
2464 print $DB::OUT "$prepend$name\n";
2466 return unless shift; # Recurse?
2467 for $name (@{"${class}::ISA"}) {
2468 $prepend = $prefix ? $prefix . " -> $name" : $name;
2469 methods_via($name, $prepend, 1);
2474 $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s
2475 ? "man" # O Happy Day!
2476 : "perldoc"; # Alas, poor unfortunates
2482 &system("$doccmd $doccmd");
2485 # this way user can override, like with $doccmd="man -Mwhatever"
2486 # or even just "man " to disable the path check.
2487 unless ($doccmd eq 'man') {
2488 &system("$doccmd $page");
2492 $page = 'perl' if lc($page) eq 'help';
2495 my $man1dir = $Config::Config{'man1dir'};
2496 my $man3dir = $Config::Config{'man3dir'};
2497 for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ }
2499 $manpath .= "$man1dir:" if $man1dir =~ /\S/;
2500 $manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir;
2501 chop $manpath if $manpath;
2502 # harmless if missing, I figure
2503 my $oldpath = $ENV{MANPATH};
2504 $ENV{MANPATH} = $manpath if $manpath;
2505 my $nopathopt = $^O =~ /dunno what goes here/;
2507 # I just *know* there are men without -M
2508 (($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
2511 unless ($page =~ /^perl\w/) {
2512 if (grep { $page eq $_ } qw{
2513 5004delta 5005delta amiga api apio book boot bot call compile
2514 cygwin data dbmfilter debug debguts delta diag doc dos dsc embed
2515 faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork
2516 form func guts hack hist hpux intern ipc lexwarn locale lol mod
2517 modinstall modlib number obj op opentut os2 os390 pod port
2518 ref reftut run sec style sub syn thrtut tie toc todo toot tootc
2519 trap unicode var vms win32 xs xstut
2524 (($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
2529 if (defined $oldpath) {
2530 $ENV{MANPATH} = $manpath;
2532 delete $ENV{MANPATH};
2536 # The following BEGIN is very handy if debugger goes havoc, debugging debugger?
2538 BEGIN { # This does not compile, alas.
2539 $IN = \*STDIN; # For bugs before DB::OUT has been opened
2540 $OUT = \*STDERR; # For errors before DB::OUT has been opened
2544 $deep = 100; # warning if stack gets this deep
2548 $SIG{INT} = \&DB::catch;
2549 # This may be enabled to debug debugger:
2550 #$warnLevel = 1 unless defined $warnLevel;
2551 #$dieLevel = 1 unless defined $dieLevel;
2552 #$signalLevel = 1 unless defined $signalLevel;
2554 $db_stop = 0; # Compiler warning
2556 $level = 0; # Level of recursive debugging
2557 # @stack and $doret are needed in sub sub, which is called for DB::postponed.
2558 # Triggers bug (?) in perl is we postpone this until runtime:
2559 @postponed = @stack = (0);
2560 $stack_depth = 0; # Localized $#stack
2565 BEGIN {$^W = $ini_warn;} # Switch warnings back
2567 #use Carp; # This did break, left for debuggin
2570 # Specific code for b c l V m f O, &blah, $blah, @blah, %blah
2571 my($text, $line, $start) = @_;
2572 my ($itext, $search, $prefix, $pack) =
2573 ($text, "^\Q${'package'}::\E([^:]+)\$");
2575 return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
2576 (map { /$search/ ? ($1) : () } keys %sub)
2577 if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/;
2578 return sort grep /^\Q$text/, values %INC # files
2579 if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/;
2580 return sort map {($_, db_complete($_ . "::", "V ", 2))}
2581 grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages
2582 if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/;
2583 return sort map {($_, db_complete($_ . "::", "V ", 2))}
2585 grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'}
2587 if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/
2588 and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1;
2589 if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files
2590 # We may want to complete to (eval 9), so $text may be wrong
2591 $prefix = length($1) - length($text);
2594 map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0
2596 if ((substr $text, 0, 1) eq '&') { # subroutines
2597 $text = substr $text, 1;
2599 return sort map "$prefix$_",
2602 (map { /$search/ ? ($1) : () }
2605 if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
2606 $pack = ($1 eq 'main' ? '' : $1) . '::';
2607 $prefix = (substr $text, 0, 1) . $1 . '::';
2610 = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ;
2611 if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
2612 return db_complete($out[0], $line, $start);
2616 if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
2617 $pack = ($package eq 'main' ? '' : $package) . '::';
2618 $prefix = substr $text, 0, 1;
2619 $text = substr $text, 1;
2620 my @out = map "$prefix$_", grep /^\Q$text/,
2621 (grep /^_?[a-zA-Z]/, keys %$pack),
2622 ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ;
2623 if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
2624 return db_complete($out[0], $line, $start);
2628 if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space
2629 my @out = grep /^\Q$text/, @options;
2630 my $val = option_val($out[0], undef);
2632 if (not defined $val or $val =~ /[\n\r]/) {
2633 # Can do nothing better
2634 } elsif ($val =~ /\s/) {
2636 foreach $l (split //, qq/\"\'\#\|/) {
2637 $out = "$l$val$l ", last if (index $val, $l) == -1;
2642 # Default to value if one completion, to question if many
2643 $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
2646 return $term->filename_list($text); # filenames
2650 print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
2654 $finished = $inhibit_exit; # So that some keys may be disabled.
2655 # Do not stop in at_exit() and destructors on exit:
2656 $DB::single = !$exiting && !$runnonstop;
2657 DB::fake::at_exit() unless $exiting or $runnonstop;
2663 "Debugged program terminated. Use `q' to quit or `R' to restart.";
2666 package DB; # Do not trace this 1; below!