--- /dev/null
+package DB;
+
+# Debugger for Perl 5.00x; perl5db.pl patch level:
+
+$VERSION = 0.9906;
+$header = "perl5db.pl patch level $VERSION";
+
+# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
+# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
+
+# modified Perl debugger, to be run from Emacs in perldb-mode
+# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
+# Johan Vromans -- upgrade to 4.0 pl 10
+# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
+
+#
+# This file is automatically included if you do perl -d.
+# It's probably not useful to include this yourself.
+#
+# Perl supplies the values for %sub. It effectively inserts
+# a &DB'DB(); in front of every place that can have a
+# breakpoint. Instead of a subroutine call it calls &DB::sub with
+# $DB::sub being the called subroutine. It also inserts a BEGIN
+# {require 'perl5db.pl'} before the first line.
+#
+# After each `require'd file is compiled, but before it is executed, a
+# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
+# $filename is the expanded name of the `require'd file (as found as
+# value of %INC).
+#
+# Additional services from Perl interpreter:
+#
+# if caller() is called from the package DB, it provides some
+# additional data.
+#
+# The array @{$main::{'_<'.$filename} is the line-by-line contents of
+# $filename.
+#
+# The hash %{'_<'.$filename} contains breakpoints and action (it is
+# keyed by line number), and individual entries are settable (as
+# opposed to the whole hash). Only true/false is important to the
+# interpreter, though the values used by perl5db.pl have the form
+# "$break_condition\0$action". Values are magical in numeric context.
+#
+# The scalar ${'_<'.$filename} contains "_<$filename".
+#
+# Note that no subroutine call is possible until &DB::sub is defined
+# (for subroutines defined outside of the package DB). In fact the same is
+# true if $deep is not defined.
+#
+# $Log: perldb.pl,v $
+
+#
+# At start reads $rcfile that may set important options. This file
+# may define a subroutine &afterinit that will be executed after the
+# debugger is initialized.
+#
+# After $rcfile is read reads environment variable PERLDB_OPTS and parses
+# it as a rest of `O ...' line in debugger prompt.
+#
+# The options that can be specified only at startup:
+# [To set in $rcfile, call &parse_options("optionName=new_value").]
+#
+# TTY - the TTY to use for debugging i/o.
+#
+# noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set
+# uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using
+# Term::Rendezvous. Current variant is to have the name of TTY in this
+# file.
+#
+# ReadLine - If false, dummy ReadLine is used, so you can debug
+# ReadLine applications.
+#
+# NonStop - if true, no i/o is performed until interrupt.
+#
+# LineInfo - file or pipe to print line number info to. If it is a
+# pipe, a short "emacs like" message is used.
+#
+# Example $rcfile: (delete leading hashes!)
+#
+# &parse_options("NonStop=1 LineInfo=db.out");
+# sub afterinit { $trace = 1; }
+#
+# The script will run without human intervention, putting trace
+# information into db.out. (If you interrupt it, you would better
+# reset LineInfo to something "interactive"!)
+#
+##################################################################
+# Changelog:
+
+# A lot of things changed after 0.94. First of all, core now informs
+# debugger about entry into XSUBs, overloaded operators, tied operations,
+# BEGIN and END. Handy with `O f=2'.
+
+# This can make debugger a little bit too verbose, please be patient
+# and report your problems promptly.
+
+# Now the option frame has 3 values: 0,1,2.
+
+# Note that if DESTROY returns a reference to the object (or object),
+# the deletion of data may be postponed until the next function call,
+# due to the need to examine the return value.
+
+# Changes: 0.95: `v' command shows versions.
+# Changes: 0.96: `v' command shows version of readline.
+# primitive completion works (dynamic variables, subs for `b' and `l',
+# options). Can `p %var'
+# Better help (`h <' now works). New commands <<, >>, {, {{.
+# {dump|print}_trace() coded (to be able to do it from <<cmd).
+# `c sub' documented.
+# At last enough magic combined to stop after the end of debuggee.
+# !! should work now (thanks to Emacs bracket matching an extra
+# `]' in a regexp is caught).
+# `L', `D' and `A' span files now (as documented).
+# Breakpoints in `require'd code are possible (used in `R').
+# Some additional words on internal work of debugger.
+# `b load filename' implemented.
+# `b postpone subr' implemented.
+# now only `q' exits debugger (overwriteable on $inhibit_exit).
+# When restarting debugger breakpoints/actions persist.
+# Buglet: When restarting debugger only one breakpoint/action per
+# autoloaded function persists.
+# Changes: 0.97: NonStop will not stop in at_exit().
+# Option AutoTrace implemented.
+# Trace printed differently if frames are printed too.
+# new `inhibitExit' option.
+# printing of a very long statement interruptible.
+# Changes: 0.98: New command `m' for printing possible methods
+# 'l -' is a synonim for `-'.
+# Cosmetic bugs in printing stack trace.
+# `frame' & 8 to print "expanded args" in stack trace.
+# Can list/break in imported subs.
+# new `maxTraceLen' option.
+# frame & 4 and frame & 8 granted.
+# new command `m'
+# nonstoppable lines do not have `:' near the line number.
+# `b compile subname' implemented.
+# Will not use $` any more.
+# `-' behaves sane now.
+# Changes: 0.99: Completion for `f', `m'.
+# `m' will remove duplicate names instead of duplicate functions.
+# `b load' strips trailing whitespace.
+# completion ignores leading `|'; takes into account current package
+# when completing a subroutine name (same for `l').
+
+####################################################################
+
+# Needed for the statement after exec():
+
+BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN.
+local($^W) = 0; # Switch run-time warnings off during init.
+warn ( # Do not ;-)
+ $dumpvar::hashDepth,
+ $dumpvar::arrayDepth,
+ $dumpvar::dumpDBFiles,
+ $dumpvar::dumpPackages,
+ $dumpvar::quoteHighBit,
+ $dumpvar::printUndef,
+ $dumpvar::globPrint,
+ $readline::Tk_toloop,
+ $dumpvar::usageOnly,
+ @ARGS,
+ $Carp::CarpLevel,
+ $panic,
+ $second_time,
+ ) if 0;
+
+# Command-line + PERLLIB:
+@ini_INC = @INC;
+
+# $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?!
+
+$trace = $signal = $single = 0; # Uninitialized warning suppression
+ # (local $^W cannot help - other packages!).
+$inhibit_exit = $option{PrintRet} = 1;
+
+@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages
+ compactDump veryCompact quote HighBit undefPrint
+ globPrint PrintRet UsageOnly frame AutoTrace
+ TTY noTTY ReadLine NonStop LineInfo maxTraceLen
+ recallCommand ShellBang pager tkRunning
+ signalLevel warnLevel dieLevel inhibit_exit);
+
+%optionVars = (
+ hashDepth => \$dumpvar::hashDepth,
+ arrayDepth => \$dumpvar::arrayDepth,
+ DumpDBFiles => \$dumpvar::dumpDBFiles,
+ DumpPackages => \$dumpvar::dumpPackages,
+ HighBit => \$dumpvar::quoteHighBit,
+ undefPrint => \$dumpvar::printUndef,
+ globPrint => \$dumpvar::globPrint,
+ tkRunning => \$readline::Tk_toloop,
+ UsageOnly => \$dumpvar::usageOnly,
+ frame => \$frame,
+ AutoTrace => \$trace,
+ inhibit_exit => \$inhibit_exit,
+ maxTraceLen => \$maxtrace,
+);
+
+%optionAction = (
+ compactDump => \&dumpvar::compactDump,
+ veryCompact => \&dumpvar::veryCompact,
+ quote => \&dumpvar::quote,
+ TTY => \&TTY,
+ noTTY => \&noTTY,
+ ReadLine => \&ReadLine,
+ NonStop => \&NonStop,
+ LineInfo => \&LineInfo,
+ recallCommand => \&recallCommand,
+ ShellBang => \&shellBang,
+ pager => \&pager,
+ signalLevel => \&signalLevel,
+ warnLevel => \&warnLevel,
+ dieLevel => \&dieLevel,
+ );
+
+%optionRequire = (
+ compactDump => 'dumpvar.pl',
+ veryCompact => 'dumpvar.pl',
+ quote => 'dumpvar.pl',
+ );
+
+# These guys may be defined in $ENV{PERL5DB} :
+$rl = 1 unless defined $rl;
+$warnLevel = 1 unless defined $warnLevel;
+$dieLevel = 1 unless defined $dieLevel;
+$signalLevel = 1 unless defined $signalLevel;
+$pre = [] unless defined $pre;
+$post = [] unless defined $post;
+$pretype = [] unless defined $pretype;
+warnLevel($warnLevel);
+dieLevel($dieLevel);
+signalLevel($signalLevel);
+&pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager;
+&recallCommand("!") unless defined $prc;
+&shellBang("!") unless defined $psh;
+$maxtrace = 400 unless defined $maxtrace;
+
+if (-e "/dev/tty") {
+ $rcfile=".perldb";
+} else {
+ $rcfile="perldb.ini";
+}
+
+if (-f $rcfile) {
+ do "./$rcfile";
+} elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") {
+ do "$ENV{LOGDIR}/$rcfile";
+} elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") {
+ do "$ENV{HOME}/$rcfile";
+}
+
+if (defined $ENV{PERLDB_OPTS}) {
+ parse_options($ENV{PERLDB_OPTS});
+}
+
+if (exists $ENV{PERLDB_RESTART}) {
+ delete $ENV{PERLDB_RESTART};
+ # $restart = 1;
+ @hist = get_list('PERLDB_HIST');
+ %break_on_load = get_list("PERLDB_ON_LOAD");
+ %postponed = get_list("PERLDB_POSTPONE");
+ my @had_breakpoints= get_list("PERLDB_VISITED");
+ for (0 .. $#had_breakpoints) {
+ %{$postponed_file{$had_breakpoints[$_]}} = get_list("PERLDB_FILE_$_");
+ }
+ my %opt = get_list("PERLDB_OPT");
+ my ($opt,$val);
+ while (($opt,$val) = each %opt) {
+ $val =~ s/[\\\']/\\$1/g;
+ parse_options("$opt'$val'");
+ }
+ @INC = get_list("PERLDB_INC");
+ @ini_INC = @INC;
+}
+
+if ($notty) {
+ $runnonstop = 1;
+} else {
+ # Is Perl being run from Emacs?
+ $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs'));
+ $rl = 0, shift(@main::ARGV) if $emacs;
+
+ #require Term::ReadLine;
+
+ if (-e "/dev/tty") {
+ $console = "/dev/tty";
+ } elsif (-e "con") {
+ $console = "con";
+ } else {
+ $console = "sys\$command";
+ }
+
+ # Around a bug:
+ if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2
+ $console = undef;
+ }
+
+ $console = $tty if defined $tty;
+
+ if (defined $console) {
+ open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN");
+ open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR")
+ || open(OUT,">&STDOUT"); # so we don't dongle stdout
+ } else {
+ open(IN,"<&STDIN");
+ open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout
+ $console = 'STDIN/OUT';
+ }
+ # so open("|more") can read from STDOUT and so we don't dingle stdin
+ $IN = \*IN;
+
+ $OUT = \*OUT;
+ select($OUT);
+ $| = 1; # for DB::OUT
+ select(STDOUT);
+
+ $LINEINFO = $OUT unless defined $LINEINFO;
+ $lineinfo = $console unless defined $lineinfo;
+
+ $| = 1; # for real STDOUT
+
+ $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
+ unless ($runnonstop) {
+ print $OUT "\nLoading DB routines from $header\n";
+ print $OUT ("Emacs support ",
+ $emacs ? "enabled" : "available",
+ ".\n");
+ print $OUT "\nEnter h or `h h' for help.\n\n";
+ }
+}
+
+@ARGS = @ARGV;
+for (@args) {
+ s/\'/\\\'/g;
+ s/(.*)/'$1'/ unless /^-?[\d.]+$/;
+}
+
+if (defined &afterinit) { # May be defined in $rcfile
+ &afterinit();
+}
+
+############################################################ Subroutines
+
+sub DB {
+ # _After_ the perl program is compiled, $single is set to 1:
+ if ($single and not $second_time++) {
+ if ($runnonstop) { # Disable until signal
+ for ($i=0; $i <= $#stack; ) {
+ $stack[$i++] &= ~1;
+ }
+ $single = 0;
+ # return; # Would not print trace!
+ }
+ }
+ $runnonstop = 0 if $single or $signal; # Disable it if interactive.
+ &save;
+ ($package, $filename, $line) = caller;
+ $filename_ini = $filename;
+ $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
+ "package $package;"; # this won't let them modify, alas
+ local(*dbline) = $main::{'_<' . $filename};
+ $max = $#dbline;
+ if (($stop,$action) = split(/\0/,$dbline{$line})) {
+ if ($stop eq '1') {
+ $signal |= 1;
+ } elsif ($stop) {
+ $evalarg = "\$DB::signal |= do {$stop;}"; &eval;
+ $dbline{$line} =~ s/;9($|\0)/$1/;
+ }
+ }
+ my $was_signal = $signal;
+ $signal = 0;
+ if ($single || $trace || $was_signal) {
+ $term || &setterm;
+ if ($emacs) {
+ $position = "\032\032$filename:$line:0\n";
+ print $LINEINFO $position;
+ } else {
+ $sub =~ s/\'/::/;
+ $prefix = $sub =~ /::/ ? "" : "${'package'}::";
+ $prefix .= "$sub($filename:";
+ $after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
+ if (length($prefix) > 30) {
+ $position = "$prefix$line):\n$line:\t$dbline[$line]$after";
+ $prefix = "";
+ $infix = ":\t";
+ } else {
+ $infix = "):\t";
+ $position = "$prefix$line$infix$dbline[$line]$after";
+ }
+ if ($frame) {
+ print $LINEINFO ' ' x $#stack, "$line:\t$dbline[$line]$after";
+ } else {
+ print $LINEINFO $position;
+ }
+ for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
+ last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
+ last if $signal;
+ $after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
+ $incr_pos = "$prefix$i$infix$dbline[$i]$after";
+ $position .= $incr_pos;
+ if ($frame) {
+ print $LINEINFO ' ' x $#stack, "$i:\t$dbline[$i]$after";
+ } else {
+ print $LINEINFO $incr_pos;
+ }
+ }
+ }
+ }
+ $evalarg = $action, &eval if $action;
+ if ($single || $was_signal) {
+ local $level = $level + 1;
+ map {$evalarg = $_, &eval} @$pre;
+ print $OUT $#stack . " levels deep in subroutine calls!\n"
+ if $single & 4;
+ $start = $line;
+ $incr = -1; # for backward motion.
+ @typeahead = @$pretype, @typeahead;
+ CMD:
+ while (($term || &setterm),
+ defined ($cmd=&readline(" DB" . ('<' x $level) .
+ ($#hist+1) . ('>' x $level) .
+ " "))) {
+ $single = 0;
+ $signal = 0;
+ $cmd =~ s/\\$/\n/ && do {
+ $cmd .= &readline(" cont: ");
+ redo CMD;
+ };
+ $cmd =~ /^$/ && ($cmd = $laststep);
+ push(@hist,$cmd) if length($cmd) > 1;
+ PIPE: {
+ ($i) = split(/\s+/,$cmd);
+ eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
+ $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
+ $cmd =~ /^h$/ && do {
+ print $OUT $help;
+ next CMD; };
+ $cmd =~ /^h\s+h$/ && do {
+ print $OUT $summary;
+ next CMD; };
+ $cmd =~ /^h\s+(\S)$/ && do {
+ my $asked = "\Q$1";
+ if ($help =~ /^$asked/m) {
+ while ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/mg) {
+ print $OUT $1;
+ }
+ } else {
+ print $OUT "`$asked' is not a debugger command.\n";
+ }
+ next CMD; };
+ $cmd =~ /^t$/ && do {
+ $trace = !$trace;
+ print $OUT "Trace = ".($trace?"on":"off")."\n";
+ next CMD; };
+ $cmd =~ /^S(\s+(!)?(.+))?$/ && do {
+ $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1;
+ foreach $subname (sort(keys %sub)) {
+ if ($Snocheck or $Srev^($subname =~ /$Spatt/)) {
+ print $OUT $subname,"\n";
+ }
+ }
+ next CMD; };
+ $cmd =~ /^v$/ && do {
+ list_versions(); next CMD};
+ $cmd =~ s/^X\b/V $package/;
+ $cmd =~ /^V$/ && do {
+ $cmd = "V $package"; };
+ $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do {
+ local ($savout) = select($OUT);
+ $packname = $1;
+ @vars = split(' ',$2);
+ do 'dumpvar.pl' unless defined &main::dumpvar;
+ if (defined &main::dumpvar) {
+ local $frame = 0;
+ local $doret = -2;
+ &main::dumpvar($packname,@vars);
+ } else {
+ print $OUT "dumpvar.pl not available.\n";
+ }
+ select ($savout);
+ next CMD; };
+ $cmd =~ s/^x\b/ / && do { # So that will be evaled
+ $onetimeDump = 'dump'; };
+ $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do {
+ methods($1); next CMD};
+ $cmd =~ s/^m\b/ / && do { # So this will be evaled
+ $onetimeDump = 'methods'; };
+ $cmd =~ /^f\b\s*(.*)/ && do {
+ $file = $1;
+ $file =~ s/\s+$//;
+ if (!$file) {
+ print $OUT "The old f command is now the r command.\n";
+ print $OUT "The new f command switches filenames.\n";
+ next CMD;
+ }
+ if (!defined $main::{'_<' . $file}) {
+ if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
+ $try = substr($try,2);
+ print $OUT "Choosing $try matching `$file':\n";
+ $file = $try;
+ }}
+ }
+ if (!defined $main::{'_<' . $file}) {
+ print $OUT "No file matching `$file' is loaded.\n";
+ next CMD;
+ } elsif ($file ne $filename) {
+ *dbline = $main::{'_<' . $file};
+ $max = $#dbline;
+ $filename = $file;
+ $start = 1;
+ $cmd = "l";
+ } else {
+ print $OUT "Already in $file.\n";
+ next CMD;
+ }
+ };
+ $cmd =~ s/^l\s+-\s*$/-/;
+ $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
+ $subname = $1;
+ $subname =~ s/\'/::/;
+ $subname = $package."::".$subname
+ unless $subname =~ /::/;
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ @pieces = split(/:/,find_sub($subname));
+ $subrange = pop @pieces;
+ $file = join(':', @pieces);
+ if ($file ne $filename) {
+ *dbline = $main::{'_<' . $file};
+ $max = $#dbline;
+ $filename = $file;
+ }
+ if ($subrange) {
+ if (eval($subrange) < -$window) {
+ $subrange =~ s/-.*/+/;
+ }
+ $cmd = "l $subrange";
+ } else {
+ print $OUT "Subroutine $subname not found.\n";
+ next CMD;
+ } };
+ $cmd =~ /^\.$/ && do {
+ $incr = -1; # for backward motion.
+ $start = $line;
+ $filename = $filename_ini;
+ *dbline = $main::{'_<' . $filename};
+ $max = $#dbline;
+ print $LINEINFO $position;
+ next CMD };
+ $cmd =~ /^w\b\s*(\d*)$/ && do {
+ $incr = $window - 1;
+ $start = $1 if $1;
+ $start -= $preview;
+ #print $OUT 'l ' . $start . '-' . ($start + $incr);
+ $cmd = 'l ' . $start . '-' . ($start + $incr); };
+ $cmd =~ /^-$/ && do {
+ $start -= $incr + $window + 1;
+ $start = 1 if $start <= 0;
+ $incr = $window - 1;
+ $cmd = 'l ' . ($start) . '+'; };
+ $cmd =~ /^l$/ && do {
+ $incr = $window - 1;
+ $cmd = 'l ' . $start . '-' . ($start + $incr); };
+ $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do {
+ $start = $1 if $1;
+ $incr = $2;
+ $incr = $window - 1 unless $incr;
+ $cmd = 'l ' . $start . '-' . ($start + $incr); };
+ $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do {
+ $end = (!defined $2) ? $max : ($4 ? $4 : $2);
+ $end = $max if $end > $max;
+ $i = $2;
+ $i = $line if $i eq '.';
+ $i = 1 if $i < 1;
+ $incr = $end - $i;
+ if ($emacs) {
+ print $OUT "\032\032$filename:$i:0\n";
+ $i = $end;
+ } else {
+ for (; $i <= $end; $i++) {
+ ($stop,$action) = split(/\0/, $dbline{$i});
+ $arrow = ($i==$line
+ and $filename eq $filename_ini)
+ ? '==>'
+ : ($dbline[$i]+0 ? ':' : ' ') ;
+ $arrow .= 'b' if $stop;
+ $arrow .= 'a' if $action;
+ print $OUT "$i$arrow\t", $dbline[$i];
+ last if $signal;
+ }
+ }
+ $start = $i; # remember in case they want more
+ $start = $max if $start > $max;
+ next CMD; };
+ $cmd =~ /^D$/ && do {
+ print $OUT "Deleting all breakpoints...\n";
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
+ for ($i = 1; $i <= $max ; $i++) {
+ if (defined $dbline{$i}) {
+ $dbline{$i} =~ s/^[^\0]+//;
+ if ($dbline{$i} =~ s/^\0?$//) {
+ delete $dbline{$i};
+ }
+ }
+ }
+ }
+ undef %postponed;
+ undef %postponed_file;
+ undef %break_on_load;
+ undef %had_breakpoints;
+ next CMD; };
+ $cmd =~ /^L$/ && do {
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
+ for ($i = 1; $i <= $max; $i++) {
+ if (defined $dbline{$i}) {
+ print "$file:\n" unless $was++;
+ print $OUT " $i:\t", $dbline[$i];
+ ($stop,$action) = split(/\0/, $dbline{$i});
+ print $OUT " break if (", $stop, ")\n"
+ if $stop;
+ print $OUT " action: ", $action, "\n"
+ if $action;
+ last if $signal;
+ }
+ }
+ }
+ if (%postponed) {
+ print $OUT "Postponed breakpoints in subroutines:\n";
+ my $subname;
+ for $subname (keys %postponed) {
+ print $OUT " $subname\t$postponed{$subname}\n";
+ last if $signal;
+ }
+ }
+ my @have = map { # Combined keys
+ keys %{$postponed_file{$_}}
+ } keys %postponed_file;
+ if (@have) {
+ print $OUT "Postponed breakpoints in files:\n";
+ my ($file, $line);
+ for $file (keys %postponed_file) {
+ my %db = %{$postponed_file{$file}};
+ next unless keys %db;
+ print $OUT " $file:\n";
+ for $line (sort {$a <=> $b} keys %db) {
+ print $OUT " $line:\n";
+ my ($stop,$action) = split(/\0/, $db{$line});
+ print $OUT " break if (", $stop, ")\n"
+ if $stop;
+ print $OUT " action: ", $action, "\n"
+ if $action;
+ last if $signal;
+ }
+ last if $signal;
+ }
+ }
+ if (%break_on_load) {
+ print $OUT "Breakpoints on load:\n";
+ my $file;
+ for $file (keys %break_on_load) {
+ print $OUT " $file\n";
+ last if $signal;
+ }
+ }
+ next CMD; };
+ $cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
+ my $file = $1; $file =~ s/\s+$//;
+ {
+ $break_on_load{$file} = 1;
+ $break_on_load{$::INC{$file}} = 1 if $::INC{$file};
+ $file .= '.pm', redo unless $file =~ /\./;
+ }
+ $had_breakpoints{$file} = 1;
+ print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
+ next CMD; };
+ $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ my $cond = $3 || '1';
+ my ($subname, $break) = ($2, $1 eq 'postpone');
+ $subname =~ s/\'/::/;
+ $subname = "${'package'}::" . $subname
+ unless $subname =~ /::/;
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ $postponed{$subname} = $break
+ ? "break +0 if $cond" : "compile";
+ next CMD; };
+ $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ $subname = $1;
+ $cond = $2 || '1';
+ $subname =~ s/\'/::/;
+ $subname = "${'package'}::" . $subname
+ unless $subname =~ /::/;
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ # Filename below can contain ':'
+ ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
+ $i += 0;
+ if ($i) {
+ $filename = $file;
+ *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename} = 1;
+ $max = $#dbline;
+ ++$i while $dbline[$i] == 0 && $i < $max;
+ $dbline{$i} =~ s/^[^\0]*/$cond/;
+ } else {
+ print $OUT "Subroutine $subname not found.\n";
+ }
+ next CMD; };
+ $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
+ $i = ($1?$1:$line);
+ $cond = $2 || '1';
+ if ($dbline[$i] == 0) {
+ print $OUT "Line $i not breakable.\n";
+ } else {
+ $had_breakpoints{$filename} = 1;
+ $dbline{$i} =~ s/^[^\0]*/$cond/;
+ }
+ next CMD; };
+ $cmd =~ /^d\b\s*(\d+)?/ && do {
+ $i = ($1?$1:$line);
+ $dbline{$i} =~ s/^[^\0]*//;
+ delete $dbline{$i} if $dbline{$i} eq '';
+ next CMD; };
+ $cmd =~ /^A$/ && do {
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
+ for ($i = 1; $i <= $max ; $i++) {
+ if (defined $dbline{$i}) {
+ $dbline{$i} =~ s/\0[^\0]*//;
+ delete $dbline{$i} if $dbline{$i} eq '';
+ }
+ }
+ }
+ next CMD; };
+ $cmd =~ /^O\s*$/ && do {
+ for (@options) {
+ &dump_option($_);
+ }
+ next CMD; };
+ $cmd =~ /^O\s*(\S.*)/ && do {
+ parse_options($1);
+ next CMD; };
+ $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE
+ push @$pre, action($1);
+ next CMD; };
+ $cmd =~ /^>>\s*(.*)/ && do {
+ push @$post, action($1);
+ next CMD; };
+ $cmd =~ /^<\s*(.*)/ && do {
+ $pre = [], next CMD unless $1;
+ $pre = [action($1)];
+ next CMD; };
+ $cmd =~ /^>\s*(.*)/ && do {
+ $post = [], next CMD unless $1;
+ $post = [action($1)];
+ next CMD; };
+ $cmd =~ /^\{\{\s*(.*)/ && do {
+ push @$pretype, $1;
+ next CMD; };
+ $cmd =~ /^\{\s*(.*)/ && do {
+ $pretype = [], next CMD unless $1;
+ $pretype = [$1];
+ next CMD; };
+ $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do {
+ $i = $1; $j = $3;
+ if ($dbline[$i] == 0) {
+ print $OUT "Line $i may not have an action.\n";
+ } else {
+ $dbline{$i} =~ s/\0[^\0]*//;
+ $dbline{$i} .= "\0" . action($j);
+ }
+ next CMD; };
+ $cmd =~ /^n$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
+ $single = 2;
+ $laststep = $cmd;
+ last CMD; };
+ $cmd =~ /^s$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
+ $single = 1;
+ $laststep = $cmd;
+ last CMD; };
+ $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
+ $i = $1;
+ if ($i =~ /\D/) { # subroutine name
+ ($file,$i) = (find_sub($i) =~ /^(.*):(.*)$/);
+ $i += 0;
+ if ($i) {
+ $filename = $file;
+ *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename}++;
+ $max = $#dbline;
+ ++$i while $dbline[$i] == 0 && $i < $max;
+ } else {
+ print $OUT "Subroutine $subname not found.\n";
+ next CMD;
+ }
+ }
+ if ($i) {
+ if ($dbline[$i] == 0) {
+ print $OUT "Line $i not breakable.\n";
+ next CMD;
+ }
+ $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p.
+ }
+ for ($i=0; $i <= $#stack; ) {
+ $stack[$i++] &= ~1;
+ }
+ last CMD; };
+ $cmd =~ /^r$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
+ $stack[$#stack] |= 1;
+ $doret = $option{PrintRet} ? $#stack - 1 : -2;
+ last CMD; };
+ $cmd =~ /^R$/ && do {
+ print $OUT "Warning: some settings and command-line options may be lost!\n";
+ my (@script, @flags, $cl);
+ push @flags, '-w' if $ini_warn;
+ # Put all the old includes at the start to get
+ # the same debugger.
+ for (@ini_INC) {
+ push @flags, '-I', $_;
+ }
+ # Arrange for setting the old INC:
+ set_list("PERLDB_INC", @ini_INC);
+ if ($0 eq '-e') {
+ for (1..$#{'::_<-e'}) { # The first line is PERL5DB
+ chomp ($cl = $ {'::_<-e'}[$_]);
+ push @script, '-e', $cl;
+ }
+ } else {
+ @script = $0;
+ }
+ set_list("PERLDB_HIST",
+ $term->Features->{getHistory}
+ ? $term->GetHistory : @hist);
+ my @had_breakpoints = keys %had_breakpoints;
+ set_list("PERLDB_VISITED", @had_breakpoints);
+ set_list("PERLDB_OPT", %option);
+ set_list("PERLDB_ON_LOAD", %break_on_load);
+ my @hard;
+ for (0 .. $#had_breakpoints) {
+ my $file = $had_breakpoints[$_];
+ *dbline = $main::{'_<' . $file};
+ next unless %dbline or %{$postponed_file{$file}};
+ (push @hard, $file), next
+ if $file =~ /^\(eval \d+\)$/;
+ my @add;
+ @add = %{$postponed_file{$file}}
+ if %{$postponed_file{$file}};
+ set_list("PERLDB_FILE_$_", %dbline, @add);
+ }
+ for (@hard) { # Yes, really-really...
+ # Find the subroutines in this eval
+ *dbline = $main::{'_<' . $_};
+ my ($quoted, $sub, %subs, $line) = quotemeta $_;
+ for $sub (keys %sub) {
+ next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
+ $subs{$sub} = [$1, $2];
+ }
+ unless (%subs) {
+ print $OUT
+ "No subroutines in $_, ignoring breakpoints.\n";
+ next;
+ }
+ LINES: for $line (keys %dbline) {
+ # One breakpoint per sub only:
+ my ($offset, $sub, $found);
+ SUBS: for $sub (keys %subs) {
+ if ($subs{$sub}->[1] >= $line # Not after the subroutine
+ and (not defined $offset # Not caught
+ or $offset < 0 )) { # or badly caught
+ $found = $sub;
+ $offset = $line - $subs{$sub}->[0];
+ $offset = "+$offset", last SUBS if $offset >= 0;
+ }
+ }
+ if (defined $offset) {
+ $postponed{$found} =
+ "break $offset if $dbline{$line}";
+ } else {
+ print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n";
+ }
+ }
+ }
+ set_list("PERLDB_POSTPONE", %postponed);
+ $ENV{PERLDB_RESTART} = 1;
+ #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS";
+ exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS;
+ print $OUT "exec failed: $!\n";
+ last CMD; };
+ $cmd =~ /^T$/ && do {
+ print_trace($OUT, 1); # skip DB
+ next CMD; };
+ $cmd =~ /^\/(.*)$/ && do {
+ $inpat = $1;
+ $inpat =~ s:([^\\])/$:$1:;
+ if ($inpat ne "") {
+ eval '$inpat =~ m'."\a$inpat\a";
+ if ($@ ne "") {
+ print $OUT "$@";
+ next CMD;
+ }
+ $pat = $inpat;
+ }
+ $end = $start;
+ $incr = -1;
+ eval '
+ for (;;) {
+ ++$start;
+ $start = 1 if ($start > $max);
+ last if ($start == $end);
+ if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
+ if ($emacs) {
+ print $OUT "\032\032$filename:$start:0\n";
+ } else {
+ print $OUT "$start:\t", $dbline[$start], "\n";
+ }
+ last;
+ }
+ } ';
+ print $OUT "/$pat/: not found\n" if ($start == $end);
+ next CMD; };
+ $cmd =~ /^\?(.*)$/ && do {
+ $inpat = $1;
+ $inpat =~ s:([^\\])\?$:$1:;
+ if ($inpat ne "") {
+ eval '$inpat =~ m'."\a$inpat\a";
+ if ($@ ne "") {
+ print $OUT "$@";
+ next CMD;
+ }
+ $pat = $inpat;
+ }
+ $end = $start;
+ $incr = -1;
+ eval '
+ for (;;) {
+ --$start;
+ $start = $max if ($start <= 0);
+ last if ($start == $end);
+ if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
+ if ($emacs) {
+ print $OUT "\032\032$filename:$start:0\n";
+ } else {
+ print $OUT "$start:\t", $dbline[$start], "\n";
+ }
+ last;
+ }
+ } ';
+ print $OUT "?$pat?: not found\n" if ($start == $end);
+ next CMD; };
+ $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do {
+ pop(@hist) if length($cmd) > 1;
+ $i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist);
+ $cmd = $hist[$i] . "\n";
+ print $OUT $cmd;
+ redo CMD; };
+ $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
+ &system($1);
+ next CMD; };
+ $cmd =~ /^$rc([^$rc].*)$/ && do {
+ $pat = "^$1";
+ pop(@hist) if length($cmd) > 1;
+ for ($i = $#hist; $i; --$i) {
+ last if $hist[$i] =~ /$pat/;
+ }
+ if (!$i) {
+ print $OUT "No such command!\n\n";
+ next CMD;
+ }
+ $cmd = $hist[$i] . "\n";
+ print $OUT $cmd;
+ redo CMD; };
+ $cmd =~ /^$sh$/ && do {
+ &system($ENV{SHELL}||"/bin/sh");
+ next CMD; };
+ $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
+ &system($ENV{SHELL}||"/bin/sh","-c",$1);
+ next CMD; };
+ $cmd =~ /^H\b\s*(-(\d+))?/ && do {
+ $end = $2?($#hist-$2):0;
+ $hist = 0 if $hist < 0;
+ for ($i=$#hist; $i>$end; $i--) {
+ print $OUT "$i: ",$hist[$i],"\n"
+ unless $hist[$i] =~ /^.?$/;
+ };
+ next CMD; };
+ $cmd =~ s/^p$/print {\$DB::OUT} \$_/;
+ $cmd =~ s/^p\b/print {\$DB::OUT} /;
+ $cmd =~ /^=/ && do {
+ if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) {
+ $alias{$k}="s~$k~$v~";
+ print $OUT "$k = $v\n";
+ } elsif ($cmd =~ /^=\s*$/) {
+ foreach $k (sort keys(%alias)) {
+ if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) {
+ print $OUT "$k = $v\n";
+ } else {
+ print $OUT "$k\t$alias{$k}\n";
+ };
+ };
+ };
+ next CMD; };
+ $cmd =~ /^\|\|?\s*[^|]/ && do {
+ if ($pager =~ /^\|/) {
+ open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
+ open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
+ } else {
+ open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT");
+ }
+ unless ($piped=open(OUT,$pager)) {
+ &warn("Can't pipe output to `$pager'");
+ if ($pager =~ /^\|/) {
+ open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
+ open(STDOUT,">&SAVEOUT")
+ || &warn("Can't restore STDOUT");
+ close(SAVEOUT);
+ } else {
+ open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
+ }
+ next CMD;
+ }
+ $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
+ && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE};
+ $selected= select(OUT);
+ $|= 1;
+ select( $selected ), $selected= "" unless $cmd =~ /^\|\|/;
+ $cmd =~ s/^\|+\s*//;
+ redo PIPE; };
+ # XXX Local variants do not work!
+ $cmd =~ s/^t\s/\$DB::trace = 1;\n/;
+ $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
+ $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'};
+ } # PIPE:
+ $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval;
+ if ($onetimeDump) {
+ $onetimeDump = undef;
+ } else {
+ print $OUT "\n";
+ }
+ } continue { # CMD:
+ if ($piped) {
+ if ($pager =~ /^\|/) {
+ $?= 0; close(OUT) || &warn("Can't close DB::OUT");
+ &warn( "Pager `$pager' failed: ",
+ ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8),
+ ( $? & 128 ) ? " (core dumped)" : "",
+ ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
+ open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
+ open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
+ $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
+ # Will stop ignoring SIGPIPE if done like nohup(1)
+ # does SIGINT but Perl doesn't give us a choice.
+ } else {
+ open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT");
+ }
+ close(SAVEOUT);
+ select($selected), $selected= "" unless $selected eq "";
+ $piped= "";
+ }
+ } # CMD:
+ $exiting = 1 unless defined $cmd;
+ map {$evalarg = $_; &eval} @$post;
+ } # if ($single || $signal)
+ ($@, $!, $,, $/, $\, $^W) = @saved;
+ ();
+}
+
+# The following code may be executed now:
+# BEGIN {warn 4}
+
+sub sub {
+ my ($al, $ret, @ret) = "";
+ if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
+ $al = " for $$sub";
+ }
+ push(@stack, $single);
+ $single &= 1;
+ $single |= 4 if $#stack == $deep;
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x ($#stack - 1), "in "),
+ # Why -1? But it works! :-(
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x ($#stack - 1), "entering $sub$al\n") if $frame;
+ if (wantarray) {
+ @ret = &$sub;
+ $single |= pop(@stack);
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
+ print ($OUT ($frame & 16 ? ' ' x $#stack : ""),
+ "list context return from $sub:\n"), dumpit( \@ret ),
+ $doret = -2 if $doret eq $#stack or $frame & 16;
+ @ret;
+ } else {
+ $ret = &$sub;
+ $single |= pop(@stack);
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
+ print ($OUT ($frame & 16 ? ' ' x $#stack : ""),
+ "scalar context return from $sub: "), dumpit( $ret ),
+ $doret = -2 if $doret eq $#stack or $frame & 16;
+ $ret;
+ }
+}
+
+sub save {
+ @saved = ($@, $!, $,, $/, $\, $^W);
+ $, = ""; $/ = "\n"; $\ = ""; $^W = 0;
+}
+
+# The following takes its argument via $evalarg to preserve current @_
+
+sub eval {
+ my @res;
+ {
+ local (@stack) = @stack; # guard against recursive debugging
+ my $otrace = $trace;
+ my $osingle = $single;
+ my $od = $^D;
+ @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
+ $trace = $otrace;
+ $single = $osingle;
+ $^D = $od;
+ }
+ my $at = $@;
+ local $saved[0]; # Preserve the old value of $@
+ eval "&DB::save";
+ if ($at) {
+ print $OUT $at;
+ } elsif ($onetimeDump eq 'dump') {
+ dumpit(\@res);
+ } elsif ($onetimeDump eq 'methods') {
+ methods($res[0]);
+ }
+}
+
+sub postponed_sub {
+ my $subname = shift;
+ if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
+ my $offset = $1 || 0;
+ # Filename below can contain ':'
+ my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
+ $i += $offset;
+ if ($i) {
+ local *dbline = $main::{'_<' . $file};
+ local $^W = 0; # != 0 is magical below
+ $had_breakpoints{$file}++;
+ my $max = $#dbline;
+ ++$i until $dbline[$i] != 0 or $i >= $max;
+ $dbline{$i} = delete $postponed{$subname};
+ } else {
+ print $OUT "Subroutine $subname not found.\n";
+ }
+ return;
+ }
+ elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
+ #print $OUT "In postponed_sub for `$subname'.\n";
+}
+
+sub postponed {
+ return &postponed_sub
+ unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled.
+ # Cannot be done before the file is compiled
+ local *dbline = shift;
+ my $filename = $dbline;
+ $filename =~ s/^_<//;
+ $signal = 1, print $OUT "'$filename' loaded...\n"
+ if $break_on_load{$filename};
+ print $LINEINFO ' ' x $#stack, "Package $filename.\n" if $frame;
+ return unless %{$postponed_file{$filename}};
+ $had_breakpoints{$filename}++;
+ #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
+ my $key;
+ for $key (keys %{$postponed_file{$filename}}) {
+ $dbline{$key} = $ {$postponed_file{$filename}}{$key};
+ }
+ undef %{$postponed_file{$filename}};
+}
+
+sub dumpit {
+ local ($savout) = select($OUT);
+ my $osingle = $single;
+ my $otrace = $trace;
+ $single = $trace = 0;
+ local $frame = 0;
+ local $doret = -2;
+ unless (defined &main::dumpValue) {
+ do 'dumpvar.pl';
+ }
+ if (defined &main::dumpValue) {
+ &main::dumpValue(shift);
+ } else {
+ print $OUT "dumpvar.pl not available.\n";
+ }
+ $single = $osingle;
+ $trace = $otrace;
+ select ($savout);
+}
+
+# Tied method do not create a context, so may get wrong message:
+
+sub print_trace {
+ my $fh = shift;
+ my @sub = dump_trace($_[0] + 1, $_[1]);
+ my $short = $_[2]; # Print short report, next one for sub name
+ my $s;
+ for ($i=0; $i <= $#sub; $i++) {
+ last if $signal;
+ local $" = ', ';
+ my $args = defined $sub[$i]{args}
+ ? "(@{ $sub[$i]{args} })"
+ : '' ;
+ $args = (substr $args, 0, $maxtrace - 3) . '...'
+ if length $args > $maxtrace;
+ my $file = $sub[$i]{file};
+ $file = $file eq '-e' ? $file : "file `$file'" unless $short;
+ $s = $sub[$i]{sub};
+ $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace;
+ if ($short) {
+ my $sub = @_ >= 4 ? $_[3] : $s;
+ print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n";
+ } else {
+ print $fh "$sub[$i]{context} = $s$args" .
+ " called from $file" .
+ " line $sub[$i]{line}\n";
+ }
+ }
+}
+
+sub dump_trace {
+ my $skip = shift;
+ my $count = shift || 1e9;
+ $skip++;
+ $count += $skip;
+ my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context);
+ my $nothard = not $frame & 8;
+ local $frame = 0; # Do not want to trace this.
+ my $otrace = $trace;
+ $trace = 0;
+ for ($i = $skip;
+ $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
+ $i++) {
+ @a = ();
+ for $arg (@args) {
+ my $type;
+ if (not defined $arg) {
+ push @a, "undef";
+ } elsif ($nothard and tied $arg) {
+ push @a, "tied";
+ } elsif ($nothard and $type = ref $arg) {
+ push @a, "ref($type)";
+ } else {
+ local $_ = "$arg"; # Safe to stringify now - should not call f().
+ s/([\'\\])/\\$1/g;
+ s/(.*)/'$1'/s
+ unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
+ s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
+ s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
+ push(@a, $_);
+ }
+ }
+ $context = $context ? '@' : "\$";
+ $args = $h ? [@a] : undef;
+ $e =~ s/\n\s*\;\s*\Z// if $e;
+ $e =~ s/([\\\'])/\\$1/g if $e;
+ if ($r) {
+ $sub = "require '$e'";
+ } elsif (defined $r) {
+ $sub = "eval '$e'";
+ } elsif ($sub eq '(eval)') {
+ $sub = "eval {...}";
+ }
+ push(@sub, {context => $context, sub => $sub, args => $args,
+ file => $file, line => $line});
+ last if $signal;
+ }
+ $trace = $otrace;
+ @sub;
+}
+
+sub action {
+ my $action = shift;
+ while ($action =~ s/\\$//) {
+ #print $OUT "+ ";
+ #$action .= "\n";
+ $action .= &gets;
+ }
+ $action;
+}
+
+sub gets {
+ local($.);
+ #<IN>;
+ &readline("cont: ");
+}
+
+sub system {
+ # We save, change, then restore STDIN and STDOUT to avoid fork() since
+ # many non-Unix systems can do system() but have problems with fork().
+ open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN");
+ open(SAVEOUT,">&OUT") || &warn("Can't save STDOUT");
+ open(STDIN,"<&IN") || &warn("Can't redirect STDIN");
+ open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
+ system(@_);
+ open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN");
+ open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
+ close(SAVEIN); close(SAVEOUT);
+ &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")",
+ ( $? & 128 ) ? " (core dumped)" : "",
+ ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
+ $?;
+}
+
+sub setterm {
+ local $frame = 0;
+ local $doret = -2;
+ local @stack = @stack; # Prevent growth by failing `use'.
+ eval { require Term::ReadLine } or die $@;
+ if ($notty) {
+ if ($tty) {
+ open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
+ open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
+ $IN = \*IN;
+ $OUT = \*OUT;
+ my $sel = select($OUT);
+ $| = 1;
+ select($sel);
+ } else {
+ eval "require Term::Rendezvous;" or die $@;
+ my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
+ my $term_rv = new Term::Rendezvous $rv;
+ $IN = $term_rv->IN;
+ $OUT = $term_rv->OUT;
+ }
+ }
+ if (!$rl) {
+ $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
+ } else {
+ $term = new Term::ReadLine 'perldb', $IN, $OUT;
+
+ $readline::rl_basic_word_break_characters .= "[:"
+ if defined $readline::rl_basic_word_break_characters
+ and index($readline::rl_basic_word_break_characters, ":") == -1;
+ $readline::rl_special_prefixes =
+ $readline::rl_special_prefixes = '$@&%';
+ $readline::rl_completer_word_break_characters =
+ $readline::rl_completer_word_break_characters . '$@&%';
+ $readline::rl_completion_function =
+ $readline::rl_completion_function = \&db_complete;
+ }
+ $LINEINFO = $OUT unless defined $LINEINFO;
+ $lineinfo = $console unless defined $lineinfo;
+ $term->MinLine(2);
+ if ($term->Features->{setHistory} and "@hist" ne "?") {
+ $term->SetHistory(@hist);
+ }
+}
+
+sub readline {
+ if (@typeahead) {
+ my $left = @typeahead;
+ my $got = shift @typeahead;
+ print $OUT "auto(-$left)", shift, $got, "\n";
+ $term->AddHistory($got)
+ if length($got) > 1 and defined $term->Features->{addHistory};
+ return $got;
+ }
+ local $frame = 0;
+ local $doret = -2;
+ $term->readline(@_);
+}
+
+sub dump_option {
+ my ($opt, $val)= @_;
+ $val = option_val($opt,'N/A');
+ $val =~ s/([\\\'])/\\$1/g;
+ printf $OUT "%20s = '%s'\n", $opt, $val;
+}
+
+sub option_val {
+ my ($opt, $default)= @_;
+ my $val;
+ if (defined $optionVars{$opt}
+ and defined $ {$optionVars{$opt}}) {
+ $val = $ {$optionVars{$opt}};
+ } elsif (defined $optionAction{$opt}
+ and defined &{$optionAction{$opt}}) {
+ $val = &{$optionAction{$opt}}();
+ } elsif (defined $optionAction{$opt}
+ and not defined $option{$opt}
+ or defined $optionVars{$opt}
+ and not defined $ {$optionVars{$opt}}) {
+ $val = $default;
+ } else {
+ $val = $option{$opt};
+ }
+ $val
+}
+
+sub parse_options {
+ local($_)= @_;
+ while ($_ ne "") {
+ s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last;
+ my ($opt,$sep) = ($1,$2);
+ my $val;
+ if ("?" eq $sep) {
+ print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last
+ if /^\S/;
+ #&dump_option($opt);
+ } elsif ($sep !~ /\S/) {
+ $val = "1";
+ } elsif ($sep eq "=") {
+ s/^(\S*)($|\s+)//;
+ $val = $1;
+ } else { #{ to "let some poor schmuck bounce on the % key in B<vi>."
+ my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #}
+ s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or
+ print($OUT "Unclosed option value `$opt$sep$_'\n"), last;
+ $val = $1;
+ $val =~ s/\\([\\$end])/$1/g;
+ }
+ my ($option);
+ my $matches =
+ grep( /^\Q$opt/ && ($option = $_), @options );
+ $matches = grep( /^\Q$opt/i && ($option = $_), @options )
+ unless $matches;
+ print $OUT "Unknown option `$opt'\n" unless $matches;
+ print $OUT "Ambiguous option `$opt'\n" if $matches > 1;
+ $option{$option} = $val if $matches == 1 and defined $val;
+ eval "local \$frame = 0; local \$doret = -2;
+ require '$optionRequire{$option}'"
+ if $matches == 1 and defined $optionRequire{$option} and defined $val;
+ $ {$optionVars{$option}} = $val
+ if $matches == 1
+ and defined $optionVars{$option} and defined $val;
+ & {$optionAction{$option}} ($val)
+ if $matches == 1
+ and defined $optionAction{$option}
+ and defined &{$optionAction{$option}} and defined $val;
+ &dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile
+ s/^\s+//;
+ }
+}
+
+sub set_list {
+ my ($stem,@list) = @_;
+ my $val;
+ $ENV{"$ {stem}_n"} = @list;
+ for $i (0 .. $#list) {
+ $val = $list[$i];
+ $val =~ s/\\/\\\\/g;
+ $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg;
+ $ENV{"$ {stem}_$i"} = $val;
+ }
+}
+
+sub get_list {
+ my $stem = shift;
+ my @list;
+ my $n = delete $ENV{"$ {stem}_n"};
+ my $val;
+ for $i (0 .. $n - 1) {
+ $val = delete $ENV{"$ {stem}_$i"};
+ $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge;
+ push @list, $val;
+ }
+ @list;
+}
+
+sub catch {
+ $signal = 1;
+ return; # Put nothing on the stack - malloc/free land!
+}
+
+sub warn {
+ my($msg)= join("",@_);
+ $msg .= ": $!\n" unless $msg =~ /\n$/;
+ print $OUT $msg;
+}
+
+sub TTY {
+ if ($term) {
+ &warn("Too late to set TTY!\n") if @_;
+ } else {
+ $tty = shift if @_;
+ }
+ $tty or $console;
+}
+
+sub noTTY {
+ if ($term) {
+ &warn("Too late to set noTTY!\n") if @_;
+ } else {
+ $notty = shift if @_;
+ }
+ $notty;
+}
+
+sub ReadLine {
+ if ($term) {
+ &warn("Too late to set ReadLine!\n") if @_;
+ } else {
+ $rl = shift if @_;
+ }
+ $rl;
+}
+
+sub NonStop {
+ if ($term) {
+ &warn("Too late to set up NonStop mode!\n") if @_;
+ } else {
+ $runnonstop = shift if @_;
+ }
+ $runnonstop;
+}
+
+sub pager {
+ if (@_) {
+ $pager = shift;
+ $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/;
+ }
+ $pager;
+}
+
+sub shellBang {
+ if (@_) {
+ $sh = quotemeta shift;
+ $sh .= "\\b" if $sh =~ /\w$/;
+ }
+ $psh = $sh;
+ $psh =~ s/\\b$//;
+ $psh =~ s/\\(.)/$1/g;
+ &sethelp;
+ $psh;
+}
+
+sub recallCommand {
+ if (@_) {
+ $rc = quotemeta shift;
+ $rc .= "\\b" if $rc =~ /\w$/;
+ }
+ $prc = $rc;
+ $prc =~ s/\\b$//;
+ $prc =~ s/\\(.)/$1/g;
+ &sethelp;
+ $prc;
+}
+
+sub LineInfo {
+ return $lineinfo unless @_;
+ $lineinfo = shift;
+ my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo";
+ $emacs = ($stream =~ /^\|/);
+ open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write");
+ $LINEINFO = \*LINEINFO;
+ my $save = select($LINEINFO);
+ $| = 1;
+ select($save);
+ $lineinfo;
+}
+
+sub list_versions {
+ my %version;
+ my $file;
+ for (keys %INC) {
+ $file = $_;
+ s,\.p[lm]$,,i ;
+ s,/,::,g ;
+ s/^perl5db$/DB/;
+ s/^Term::ReadLine::readline$/readline/;
+ if (defined $ { $_ . '::VERSION' }) {
+ $version{$file} = "$ { $_ . '::VERSION' } from ";
+ }
+ $version{$file} .= $INC{$file};
+ }
+ do 'dumpvar.pl' unless defined &main::dumpValue;
+ if (defined &main::dumpValue) {
+ local $frame = 0;
+ &main::dumpValue(\%version);
+ } else {
+ print $OUT "dumpvar.pl not available.\n";
+ }
+}
+
+sub sethelp {
+ $help = "
+T Stack trace.
+s [expr] Single step [in expr].
+n [expr] Next, steps over subroutine calls [in expr].
+<CR> Repeat last n or s command.
+r Return from current subroutine.
+c [line|sub] Continue; optionally inserts a one-time-only breakpoint
+ at the specified position.
+l min+incr List incr+1 lines starting at min.
+l min-max List lines min through max.
+l line List single line.
+l subname List first window of lines from subroutine.
+l List next window of lines.
+- List previous window of lines.
+w [line] List window around line.
+. Return to the executed line.
+f filename Switch to viewing filename. Must be loaded.
+/pattern/ Search forwards for pattern; final / is optional.
+?pattern? Search backwards for pattern; final ? is optional.
+L List all breakpoints and actions.
+S [[!]pattern] List subroutine names [not] matching pattern.
+t Toggle trace mode.
+t expr Trace through execution of expr.
+b [line] [condition]
+ Set breakpoint; line defaults to the current execution line;
+ condition breaks if it evaluates to true, defaults to '1'.
+b subname [condition]
+ Set breakpoint at first line of subroutine.
+b load filename Set breakpoint on `require'ing the given file.
+b postpone subname [condition]
+ Set breakpoint at first line of subroutine after
+ it is compiled.
+b compile subname
+ Stop after the subroutine is compiled.
+d [line] Delete the breakpoint for line.
+D Delete all breakpoints.
+a [line] command
+ Set an action to be done before the line is executed.
+ Sequence is: check for breakpoint, print line if necessary,
+ do action, prompt user if breakpoint or step, evaluate line.
+A Delete all actions.
+V [pkg [vars]] List some (default all) variables in package (default current).
+ Use ~pattern and !pattern for positive and negative regexps.
+X [vars] Same as \"V currentpackage [vars]\".
+x expr Evals expression in array context, dumps the result.
+m expr Evals expression in array context, prints methods callable
+ on the first element of the result.
+m class Prints methods callable via the given class.
+O [opt[=val]] [opt\"val\"] [opt?]...
+ Set or query values of options. val defaults to 1. opt can
+ be abbreviated. Several options can be listed.
+ recallCommand, ShellBang: chars used to recall command or spawn shell;
+ pager: program for output of \"|cmd\";
+ tkRunning: run Tk while prompting (with ReadLine);
+ signalLevel warnLevel dieLevel: level of verbosity;
+ inhibit_exit Allows stepping off the end of the script.
+ The following options affect what happens with V, X, and x commands:
+ arrayDepth, hashDepth: print only first N elements ('' for all);
+ compactDump, veryCompact: change style of array and hash dump;
+ globPrint: whether to print contents of globs;
+ DumpDBFiles: dump arrays holding debugged files;
+ DumpPackages: dump symbol tables of packages;
+ quote, HighBit, undefPrint: change style of string dump;
+ Option PrintRet affects printing of return value after r command,
+ frame affects printing messages on entry and exit from subroutines.
+ AutoTrace affects printing messages on every possible breaking point.
+ maxTraceLen gives maximal length of evals/args listed in stack trace.
+ During startup options are initialized from \$ENV{PERLDB_OPTS}.
+ You can put additional initialization options TTY, noTTY,
+ ReadLine, and NonStop there.
+< command Define Perl command to run before each prompt.
+<< command Add to the list of Perl commands to run before each prompt.
+> command Define Perl command to run after each prompt.
+>> command Add to the list of Perl commands to run after each prompt.
+\{ commandline Define debugger command to run before each prompt.
+\{{ commandline Add to the list of debugger commands to run before each prompt.
+$prc number Redo a previous command (default previous command).
+$prc -number Redo number'th-to-last command.
+$prc pattern Redo last command that started with pattern.
+ See 'O recallCommand' too.
+$psh$psh cmd Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)"
+ . ( $rc eq $sh ? "" : "
+$psh [cmd] Run cmd in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
+ See 'O shellBang' too.
+H -number Display last number commands (default all).
+p expr Same as \"print {DB::OUT} expr\" in current package.
+|dbcmd Run debugger command, piping DB::OUT to current pager.
+||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well.
+\= [alias value] Define a command alias, or list current aliases.
+command Execute as a perl statement in current package.
+v Show versions of loaded modules.
+R Pure-man-restart of debugger, some of debugger state
+ and command-line options may be lost.
+ Currently the following setting are preserved:
+ history, breakpoints and actions, debugger Options
+ and the following command-line options: -w, -I, -e.
+h [db_command] Get help [on a specific debugger command], enter |h to page.
+h h Summary of debugger commands.
+q or ^D Quit. Set \$DB::finished to 0 to debug global destruction.
+
+";
+ $summary = <<"END_SUM";
+List/search source lines: Control script execution:
+ l [ln|sub] List source code T Stack trace
+ - or . List previous/current line s [expr] Single step [in expr]
+ w [line] List around line n [expr] Next, steps over subs
+ f filename View source in file <CR> Repeat last n or s
+ /pattern/ ?patt? Search forw/backw r Return from subroutine
+ v Show versions of modules c [ln|sub] Continue until position
+Debugger controls: L List break pts & actions
+ O [...] Set debugger options t [expr] Toggle trace [trace expr]
+ <[<] or {[{] [cmd] Do before prompt b [ln/event] [c] Set breakpoint
+ >[>] [cmd] Do after prompt b sub [c] Set breakpoint for sub
+ $prc [N|pat] Redo a previous command d [line] Delete a breakpoint
+ H [-num] Display last num commands D Delete all breakpoints
+ = [a val] Define/list an alias a [ln] cmd Do cmd before line
+ h [db_cmd] Get help on command A Delete all actions
+ |[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess
+ q or ^D Quit R Attempt a restart
+Data Examination: expr Execute perl code, also see: s,n,t expr
+ x|m expr Evals expr in array context, dumps the result or lists methods.
+ p expr Print expression (uses script's current package).
+ S [[!]pat] List subroutine names [not] matching pattern
+ V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern.
+ X [Vars] Same as \"V current_package [Vars]\".
+END_SUM
+ # ')}}; # Fix balance of Emacs parsing
+}
+
+sub diesignal {
+ local $frame = 0;
+ local $doret = -2;
+ $SIG{'ABRT'} = 'DEFAULT';
+ kill 'ABRT', $$ if $panic++;
+ if (defined &Carp::longmess) {
+ local $SIG{__WARN__} = '';
+ local $Carp::CarpLevel = 2; # mydie + confess
+ &warn(Carp::longmess("Signal @_"));
+ }
+ else {
+ print $DB::OUT "Got signal @_\n";
+ }
+ kill 'ABRT', $$;
+}
+
+sub dbwarn {
+ local $frame = 0;
+ local $doret = -2;
+ local $SIG{__WARN__} = '';
+ local $SIG{__DIE__} = '';
+ eval { require Carp }; # If error/warning during compilation,
+ # require may be broken.
+ warn(@_, "\nPossible unrecoverable error"), warn("\nTry to decrease warnLevel `O'ption!\n"), return
+ unless defined &Carp::longmess;
+ #&warn("Entering dbwarn\n");
+ my ($mysingle,$mytrace) = ($single,$trace);
+ $single = 0; $trace = 0;
+ my $mess = Carp::longmess(@_);
+ ($single,$trace) = ($mysingle,$mytrace);
+ #&warn("Warning in dbwarn\n");
+ &warn($mess);
+ #&warn("Exiting dbwarn\n");
+}
+
+sub dbdie {
+ local $frame = 0;
+ local $doret = -2;
+ local $SIG{__DIE__} = '';
+ local $SIG{__WARN__} = '';
+ my $i = 0; my $ineval = 0; my $sub;
+ #&warn("Entering dbdie\n");
+ if ($dieLevel != 2) {
+ while ((undef,undef,undef,$sub) = caller(++$i)) {
+ $ineval = 1, last if $sub eq '(eval)';
+ }
+ {
+ local $SIG{__WARN__} = \&dbwarn;
+ &warn(@_) if $dieLevel > 2; # Ineval is false during destruction?
+ }
+ #&warn("dieing quietly in dbdie\n") if $ineval and $dieLevel < 2;
+ die @_ if $ineval and $dieLevel < 2;
+ }
+ eval { require Carp }; # If error/warning during compilation,
+ # require may be broken.
+ die(@_, "\nUnrecoverable error") unless defined &Carp::longmess;
+ # We do not want to debug this chunk (automatic disabling works
+ # inside DB::DB, but not in Carp).
+ my ($mysingle,$mytrace) = ($single,$trace);
+ $single = 0; $trace = 0;
+ my $mess = Carp::longmess(@_);
+ ($single,$trace) = ($mysingle,$mytrace);
+ #&warn("dieing loudly in dbdie\n");
+ die $mess;
+}
+
+sub warnLevel {
+ if (@_) {
+ $prevwarn = $SIG{__WARN__} unless $warnLevel;
+ $warnLevel = shift;
+ if ($warnLevel) {
+ $SIG{__WARN__} = \&DB::dbwarn;
+ } else {
+ $SIG{__WARN__} = $prevwarn;
+ }
+ }
+ $warnLevel;
+}
+
+sub dieLevel {
+ if (@_) {
+ $prevdie = $SIG{__DIE__} unless $dieLevel;
+ $dieLevel = shift;
+ if ($dieLevel) {
+ $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2;
+ #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2;
+ print $OUT "Stack dump during die enabled",
+ ( $dieLevel == 1 ? " outside of evals" : ""), ".\n";
+ print $OUT "Dump printed too.\n" if $dieLevel > 2;
+ } else {
+ $SIG{__DIE__} = $prevdie;
+ print $OUT "Default die handler restored.\n";
+ }
+ }
+ $dieLevel;
+}
+
+sub signalLevel {
+ if (@_) {
+ $prevsegv = $SIG{SEGV} unless $signalLevel;
+ $prevbus = $SIG{BUS} unless $signalLevel;
+ $signalLevel = shift;
+ if ($signalLevel) {
+ $SIG{SEGV} = \&DB::diesignal;
+ $SIG{BUS} = \&DB::diesignal;
+ } else {
+ $SIG{SEGV} = $prevsegv;
+ $SIG{BUS} = $prevbus;
+ }
+ }
+ $signalLevel;
+}
+
+sub find_sub {
+ my $subr = shift;
+ return unless defined &$subr;
+ $sub{$subr} or do {
+ $subr = \&$subr; # Hard reference
+ my $s;
+ for (keys %sub) {
+ $s = $_, last if $subr eq \&$_;
+ }
+ $sub{$s} if $s;
+ }
+}
+
+sub methods {
+ my $class = shift;
+ $class = ref $class if ref $class;
+ local %seen;
+ local %packs;
+ methods_via($class, '', 1);
+ methods_via('UNIVERSAL', 'UNIVERSAL', 0);
+}
+
+sub methods_via {
+ my $class = shift;
+ return if $packs{$class}++;
+ my $prefix = shift;
+ my $prepend = $prefix ? "via $prefix: " : '';
+ my $name;
+ for $name (grep {defined &{$ {"$ {class}::"}{$_}}}
+ sort keys %{"$ {class}::"}) {
+ next if $seen{ $name }++;
+ print $DB::OUT "$prepend$name\n";
+ }
+ return unless shift; # Recurse?
+ for $name (@{"$ {class}::ISA"}) {
+ $prepend = $prefix ? $prefix . " -> $name" : $name;
+ methods_via($name, $prepend, 1);
+ }
+}
+
+# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
+
+BEGIN { # This does not compile, alas.
+ $IN = \*STDIN; # For bugs before DB::OUT has been opened
+ $OUT = \*STDERR; # For errors before DB::OUT has been opened
+ $sh = '!';
+ $rc = ',';
+ @hist = ('?');
+ $deep = 100; # warning if stack gets this deep
+ $window = 10;
+ $preview = 3;
+ $sub = '';
+ $SIG{INT} = \&DB::catch;
+ # This may be enabled to debug debugger:
+ #$warnLevel = 1 unless defined $warnLevel;
+ #$dieLevel = 1 unless defined $dieLevel;
+ #$signalLevel = 1 unless defined $signalLevel;
+
+ $db_stop = 0; # Compiler warning
+ $db_stop = 1 << 30;
+ $level = 0; # Level of recursive debugging
+ # @stack and $doret are needed in sub sub, which is called for DB::postponed.
+ # Triggers bug (?) in perl is we postpone this until runtime:
+ @postponed = @stack = (0);
+ $doret = -2;
+ $frame = 0;
+}
+
+BEGIN {$^W = $ini_warn;} # Switch warnings back
+
+#use Carp; # This did break, left for debuggin
+
+sub db_complete {
+ # Specific code for b c l V m f O, &blah, $blah, @blah, %blah
+ my($text, $line, $start) = @_;
+ my ($itext, $search, $prefix, $pack) =
+ ($text, "^\Q$ {'package'}::\E([^:]+)\$");
+
+ return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
+ (map { /$search/ ? ($1) : () } keys %sub)
+ if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/;
+ return sort grep /^\Q$text/, values %INC # files
+ if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/;
+ return sort map {($_, db_complete($_ . "::", "V ", 2))}
+ grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages
+ if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/;
+ return sort map {($_, db_complete($_ . "::", "V ", 2))}
+ grep !/^main::/,
+ grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'}
+ # packages
+ if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/
+ and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1;
+ if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files
+ # We may want to complete to (eval 9), so $text may be wrong
+ $prefix = length($1) - length($text);
+ $text = $1;
+ return sort
+ map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0
+ }
+ if ((substr $text, 0, 1) eq '&') { # subroutines
+ $text = substr $text, 1;
+ $prefix = "&";
+ return sort map "$prefix$_",
+ grep /^\Q$text/,
+ (keys %sub),
+ (map { /$search/ ? ($1) : () }
+ keys %sub);
+ }
+ if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
+ $pack = ($1 eq 'main' ? '' : $1) . '::';
+ $prefix = (substr $text, 0, 1) . $1 . '::';
+ $text = $2;
+ my @out
+ = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ;
+ if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
+ return db_complete($out[0], $line, $start);
+ }
+ return sort @out;
+ }
+ if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
+ $pack = ($package eq 'main' ? '' : $package) . '::';
+ $prefix = substr $text, 0, 1;
+ $text = substr $text, 1;
+ my @out = map "$prefix$_", grep /^\Q$text/,
+ (grep /^_?[a-zA-Z]/, keys %$pack),
+ ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ;
+ if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
+ return db_complete($out[0], $line, $start);
+ }
+ return sort @out;
+ }
+ if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space
+ my @out = grep /^\Q$text/, @options;
+ my $val = option_val($out[0], undef);
+ my $out = '? ';
+ if (not defined $val or $val =~ /[\n\r]/) {
+ # Can do nothing better
+ } elsif ($val =~ /\s/) {
+ my $found;
+ foreach $l (split //, qq/\"\'\#\|/) {
+ $out = "$l$val$l ", last if (index $val, $l) == -1;
+ }
+ } else {
+ $out = "=$val ";
+ }
+ # Default to value if one completion, to question if many
+ $readline::rl_completer_terminator_character
+ = $readline::rl_completer_terminator_character
+ = (@out == 1 ? $out : '? ');
+ return sort @out;
+ }
+ return &readline::rl_filename_list($text); # filenames
+}
+
+sub end_report { print $OUT "Use `q' to quit and `R' to restart. `h q' for details.\n" }
+
+END {
+ $finished = $inhibit_exit; # So that some keys may be disabled.
+ # Do not stop in at_exit() and destructors on exit:
+ $DB::single = !$exiting && !$runnonstop;
+ DB::fake::at_exit() unless $exiting or $runnonstop;
+}
+
+package DB::fake;
+
+sub at_exit {
+ "Debuggee terminated. Use `q' to quit and `R' to restart.";
+}
+
+package DB; # Do not trace this 1; below!
+
+1;
projects / platform / upstream / perl.git / commitdiff