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-rw-r--r--lib/dumpvar.pl373
-rw-r--r--lib/perl5db.pl1295
-rw-r--r--lib/sigtrap.pm18
3 files changed, 1682 insertions, 4 deletions
diff --git a/lib/dumpvar.pl b/lib/dumpvar.pl
index 4ebcb5203d..c78319b539 100644
--- a/lib/dumpvar.pl
+++ b/lib/dumpvar.pl
@@ -1,3 +1,376 @@
+require 5.002; # For (defined ref)
+package dumpvar;
+
+# Needed for PrettyPrinter only:
+
+# require 5.001; # Well, it coredumps anyway undef DB in 5.000 (not now)
+
+# translate control chars to ^X - Randal Schwartz
+# Modifications to print types by Peter Gordon v1.0
+
+# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
+
+# Won't dump symbol tables and contents of debugged files by default
+
+$winsize = 80 unless defined $winsize;
+
+
+# Defaults
+
+# $globPrint = 1;
+$printUndef = 1 unless defined $printUndef;
+$tick = "'" unless defined $tick;
+$unctrl = 'quote' unless defined $unctrl;
+
+sub main::dumpValue {
+ local %address;
+ (print "undef\n"), return unless defined $_[0];
+ (print &stringify($_[0]), "\n"), return unless ref $_[0];
+ dumpvar::unwrap($_[0],0);
+}
+
+# This one is good for variable names:
+
+sub unctrl {
+ local($_) = @_;
+ local($v) ;
+
+ return \$_ if ref \$_ eq "GLOB";
+ s/([\001-\037\177])/'^'.pack('c',ord($1)^64)/eg;
+ $_;
+}
+
+sub stringify {
+ local($_,$noticks) = @_;
+ local($v) ;
+
+ return 'undef' unless defined $_ or not $printUndef;
+ return $_ . "" if ref \$_ eq 'GLOB';
+ if ($tick eq "'") {
+ s/([\'\\])/\\$1/g;
+ } elsif ($unctrl eq 'unctrl') {
+ s/([\"\\])/\\$1/g ;
+ s/([\000-\037\177])/'^'.pack('c',ord($1)^64)/eg;
+ s/([\200-\377])/'\\0x'.sprintf('%2X',ord($1))/eg
+ if $quoteHighBit;
+ } elsif ($unctrl eq 'quote') {
+ s/([\"\\\$\@])/\\$1/g if $tick eq '"';
+ s/\033/\\e/g;
+ s/([\000-\037\177])/'\\c'.chr(ord($1)^64)/eg;
+ }
+ s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit;
+ ($noticks || /^\d+(\.\d*)?\Z/)
+ ? $_
+ : $tick . $_ . $tick;
+}
+
+sub ShortArray {
+ my $tArrayDepth = $#{$_[0]} ;
+ $tArrayDepth = $#{$_[0]} < $arrayDepth-1 ? $#{$_[0]} : $arrayDepth-1
+ unless $arrayDepth eq '' ;
+ my $shortmore = "";
+ $shortmore = " ..." if $tArrayDepth < $#{$_[0]} ;
+ if (!grep(ref $_, @{$_[0]})) {
+ $short = "0..$#{$_[0]} '" .
+ join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
+ return $short if length $short <= $compactDump;
+ }
+ undef;
+}
+
+sub DumpElem {
+ my $short = &stringify($_[0], ref $_[0]);
+ if ($veryCompact && ref $_[0]
+ && (ref $_[0] eq 'ARRAY' and !grep(ref $_, @{$_[0]}) )) {
+ my $end = "0..$#{$v} '" .
+ join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
+ } elsif ($veryCompact && ref $_[0]
+ && (ref $_[0] eq 'HASH') and !grep(ref $_, values %{$_[0]})) {
+ my $end = 1;
+ $short = $sp . "0..$#{$v} '" .
+ join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore";
+ } else {
+ print "$short\n";
+ unwrap($_[0],$_[1]);
+ }
+}
+
+sub unwrap {
+ return if $DB::signal;
+ local($v) = shift ;
+ local($s) = shift ; # extra no of spaces
+ local(%v,@v,$sp,$value,$key,$type,@sortKeys,$more,$shortmore,$short) ;
+ local($tHashDepth,$tArrayDepth) ;
+
+ $sp = " " x $s ;
+ $s += 3 ;
+
+ # Check for reused addresses
+ if (ref $v) {
+ ($address) = $v =~ /(0x[0-9a-f]+)/ ;
+ if (defined $address) {
+ ($type) = $v =~ /=(.*?)\(/ ;
+ $address{$address}++ ;
+ if ( $address{$address} > 1 ) {
+ print "${sp}-> REUSED_ADDRESS\n" ;
+ return ;
+ }
+ }
+ } elsif (ref \$v eq 'GLOB') {
+ $address = "$v" . ""; # To avoid a bug with globs
+ $address{$address}++ ;
+ if ( $address{$address} > 1 ) {
+ print "${sp}*DUMPED_GLOB*\n" ;
+ return ;
+ }
+ }
+
+ if ( ref $v eq 'HASH' or $type eq 'HASH') {
+ @sortKeys = sort keys(%$v) ;
+ undef $more ;
+ $tHashDepth = $#sortKeys ;
+ $tHashDepth = $#sortKeys < $hashDepth-1 ? $#sortKeys : $hashDepth-1
+ unless $hashDepth eq '' ;
+ $more = "....\n" if $tHashDepth < $#sortKeys ;
+ $shortmore = "";
+ $shortmore = ", ..." if $tHashDepth < $#sortKeys ;
+ $#sortKeys = $tHashDepth ;
+ if ($compactDump && !grep(ref $_, values %{$v})) {
+ #$short = $sp .
+ # (join ', ',
+# Next row core dumps during require from DB on 5.000, even with map {"_"}
+ # map {&stringify($_) . " => " . &stringify($v->{$_})}
+ # @sortKeys) . "'$shortmore";
+ $short = $sp;
+ my @keys;
+ for (@sortKeys) {
+ push @keys, &stringify($_) . " => " . &stringify($v->{$_});
+ }
+ $short .= join ', ', @keys;
+ $short .= $shortmore;
+ (print "$short\n"), return if length $short <= $compactDump;
+ }
+ for $key (@sortKeys) {
+ return if $DB::signal;
+ $value = $ {$v}{$key} ;
+ print "$sp", &stringify($key), " => ";
+ DumpElem $value, $s;
+ }
+ print "$sp empty hash\n" unless @sortKeys;
+ print "$sp$more" if defined $more ;
+ } elsif ( ref $v eq 'ARRAY' or $type eq 'ARRAY') {
+ $tArrayDepth = $#{$v} ;
+ undef $more ;
+ $tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1
+ unless $arrayDepth eq '' ;
+ $more = "....\n" if $tArrayDepth < $#{$v} ;
+ $shortmore = "";
+ $shortmore = " ..." if $tArrayDepth < $#{$v} ;
+ if ($compactDump && !grep(ref $_, @{$v})) {
+ if ($#$v >= 0) {
+ $short = $sp . "0..$#{$v} '" .
+ join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore";
+ } else {
+ $short = $sp . "empty array";
+ }
+ (print "$short\n"), return if length $short <= $compactDump;
+ }
+ #if ($compactDump && $short = ShortArray($v)) {
+ # print "$short\n";
+ # return;
+ #}
+ for $num ($[ .. $tArrayDepth) {
+ return if $DB::signal;
+ print "$sp$num ";
+ DumpElem $v->[$num], $s;
+ }
+ print "$sp empty array\n" unless @$v;
+ print "$sp$more" if defined $more ;
+ } elsif ( ref $v eq 'SCALAR' or ref $v eq 'REF' or $type eq 'SCALAR' ) {
+ print "$sp-> ";
+ DumpElem $$v, $s;
+ } elsif (ref $v eq 'GLOB') {
+ print "$sp-> ",&stringify($$v,1),"\n";
+ if ($globPrint) {
+ $s += 3;
+ dumpglob($s, "{$$v}", $$v, 1);
+ } elsif (defined ($fileno = fileno($v))) {
+ print( (' ' x ($s+3)) . "FileHandle({$$v}) => fileno($fileno)\n" );
+ }
+ } elsif (ref \$v eq 'GLOB') {
+ if ($globPrint) {
+ dumpglob($s, "{$v}", $v, 1) if $globPrint;
+ } elsif (defined ($fileno = fileno(\$v))) {
+ print( (' ' x $s) . "FileHandle({$v}) => fileno($fileno)\n" );
+ }
+ }
+}
+
+sub matchvar {
+ $_[0] eq $_[1] or
+ ($_[1] =~ /^([!~])(.)/) and
+ ($1 eq '!') ^ (eval {($_[2] . "::" . $_[0]) =~ /$2$'/});
+}
+
+sub compactDump {
+ $compactDump = shift if @_;
+ $compactDump = 6*80-1 if $compactDump and $compactDump < 2;
+ $compactDump;
+}
+
+sub veryCompact {
+ $veryCompact = shift if @_;
+ compactDump(1) if !$compactDump and $veryCompact;
+ $veryCompact;
+}
+
+sub unctrlSet {
+ if (@_) {
+ my $in = shift;
+ if ($in eq 'unctrl' or $in eq 'quote') {
+ $unctrl = $in;
+ } else {
+ print "Unknown value for `unctrl'.\n";
+ }
+ }
+ $unctrl;
+}
+
+sub quote {
+ if (@_ and $_[0] eq '"') {
+ $tick = '"';
+ $unctrl = 'quote';
+ } elsif (@_) { # Need to set
+ $tick = "'";
+ $unctrl = 'unctrl';
+ }
+ $tick;
+}
+
+sub dumpglob {
+ return if $DB::signal;
+ my ($off,$key, $val, $all) = @_;
+ local(*entry) = $val;
+ my $fileno;
+ if (defined $entry) {
+ print( (' ' x $off) . "\$", &unctrl($key), " = " );
+ DumpElem $entry, 3+$off;
+ }
+ if (($key !~ /^_</ or $dumpDBFiles) and defined @entry) {
+ print( (' ' x $off) . "\@$key = (\n" );
+ unwrap(\@entry,3+$off) ;
+ print( (' ' x $off) . ")\n" );
+ }
+ if ($key ne "main::" && $key ne "DB::" && defined %entry
+ && ($dumpPackages or $key !~ /::$/)
+ && !($package eq "dumpvar" and $key eq "stab")) {
+ print( (' ' x $off) . "\%$key = (\n" );
+ unwrap(\%entry,3+$off) ;
+ print( (' ' x $off) . ")\n" );
+ }
+ if (defined ($fileno = fileno(*entry))) {
+ print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
+ }
+ if ($all) {
+ if (defined &entry) {
+ my $sub = $key;
+ $sub = $1 if $sub =~ /^\{\*(.*)\}$/;
+ my $place = $DB::sub{$sub};
+ $place = '???' unless defined $place;
+ print( (' ' x $off) . "&$sub in $place\n" );
+ }
+ }
+}
+
+sub main::dumpvar {
+ my ($package,@vars) = @_;
+ local(%address,$key,$val);
+ $package .= "::" unless $package =~ /::$/;
+ *stab = *{"main::"};
+ while ($package =~ /(\w+?::)/g){
+ *stab = $ {stab}{$1};
+ }
+ local $TotalStrings = 0;
+ local $Strings = 0;
+ local $CompleteTotal = 0;
+ while (($key,$val) = each(%stab)) {
+ return if $DB::signal;
+ next if @vars && !grep( matchvar($key, $_), @vars );
+ if ($usageOnly) {
+ globUsage(\$val, $key) unless $package eq 'dumpvar' and $key eq 'stab';
+ } else {
+ dumpglob(0,$key, $val);
+ }
+ }
+ if ($usageOnly) {
+ print "String space: $TotalStrings bytes in $Strings strings.\n";
+ $CompleteTotal += $TotalStrings;
+ print "Grand total = $CompleteTotal bytes (1 level deep) + overhead.\n";
+ }
+}
+
+sub scalarUsage {
+ my $size = length($_[0]);
+ $TotalStrings += $size;
+ $Strings++;
+ $size;
+}
+
+sub arrayUsage { # array ref, name
+ my $size = 0;
+ map {$size += scalarUsage($_)} @{$_[0]};
+ my $len = @{$_[0]};
+ print "\@$_[1] = $len item", ($len > 1 ? "s" : ""),
+ " (data: $size bytes)\n"
+ if defined $_[1];
+ $CompleteTotal += $size;
+ $size;
+}
+
+sub hashUsage { # hash ref, name
+ my @keys = keys %{$_[0]};
+ my @values = values %{$_[0]};
+ my $keys = arrayUsage \@keys;
+ my $values = arrayUsage \@values;
+ my $len = @keys;
+ my $total = $keys + $values;
+ print "\%$_[1] = $len item", ($len > 1 ? "s" : ""),
+ " (keys: $keys; values: $values; total: $total bytes)\n"
+ if defined $_[1];
+ $total;
+}
+
+sub globUsage { # glob ref, name
+ local *name = *{$_[0]};
+ $total = 0;
+ $total += scalarUsage $name if defined $name;
+ $total += arrayUsage \@name, $_[1] if defined @name;
+ $total += hashUsage \%name, $_[1] if defined %name and $_[1] ne "main::"
+ and $_[1] ne "DB::"; #and !($package eq "dumpvar" and $key eq "stab"));
+ $total;
+}
+
+sub packageUsage {
+ my ($package,@vars) = @_;
+ $package .= "::" unless $package =~ /::$/;
+ local *stab = *{"main::"};
+ while ($package =~ /(\w+?::)/g){
+ *stab = $ {stab}{$1};
+ }
+ local $TotalStrings = 0;
+ local $CompleteTotal = 0;
+ my ($key,$val);
+ while (($key,$val) = each(%stab)) {
+ next if @vars && !grep($key eq $_,@vars);
+ globUsage \$val, $key unless $package eq 'dumpvar' and $key eq 'stab';
+ }
+ print "String space: $TotalStrings.\n";
+ $CompleteTotal += $TotalStrings;
+ print "\nGrand total = $CompleteTotal bytes\n";
+}
+
+1;
+
package dumpvar;
# translate control chars to ^X - Randal Schwartz
diff --git a/lib/perl5db.pl b/lib/perl5db.pl
index 15a2498324..f6e8ecae47 100644
--- a/lib/perl5db.pl
+++ b/lib/perl5db.pl
@@ -1,5 +1,1300 @@
package DB;
+# Debugger for Perl 5.001m; perl5db.pl patch level:
+
+$header = 'perl5db.pl patch level 0.93';
+
+# 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 @line and %sub. It effectively inserts
+# a &DB'DB(<linenum>); 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.
+#
+# Note that no subroutine call is possible until &DB::sub is defined
+# (for subroutines defined outside this file). 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 { $trace = 1; }
+#
+# The script will run without human intervention, putting trace
+# information into db.out. (If you interrupt it, you would better
+# reset LineInfo to something "interactive"!)
+#
+
+
+local($^W) = 0;
+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,
+ ) if 0;
+
+# $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?!
+
+$trace = $signal = $single = 0; # Uninitialized warning suppression
+ # (local $^W cannot help - other packages!).
+@stack = (0);
+
+$option{PrintRet} = 1;
+
+@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages
+ compactDump veryCompact quote HighBit undefPrint
+ globPrint PrintRet UsageOnly frame
+ TTY noTTY ReadLine NonStop LineInfo
+ recallCommand ShellBang pager tkRunning
+ signalLevel warnLevel dieLevel);
+
+%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,
+);
+
+%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 $rl;
+warnLevel($warnLevel);
+dieLevel($dieLevel);
+signalLevel($signalLevel);
+&pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager;
+&recallCommand("!") unless defined $prc;
+&shellBang("!") unless defined $psh;
+
+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 ($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) { # 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 $rcfile
+ &afterinit();
+}
+
+############################################################ Subroutines
+
+# The following code may be executed now, but gives FPE later:
+# BEGIN {warn 5}
+
+sub DB {
+ if ($runnonstop) { # Disable until signal
+ for ($i=0; $i <= $#stack; ) {
+ $stack[$i++] &= ~1;
+ }
+ $single = $runnonstop = 0; # Once only
+ return;
+ }
+ &save;
+ if ($doret) {
+ $doret = 0;
+ if ($option{PrintRet}) {
+ print $OUT "$retctx context return from $lastsub:",
+ ($retctx eq 'list') ? "\n" : " " ;
+ dumpit( ($retctx eq 'list') ? \@ret : $ret );
+ }
+ }
+ ($package, $filename, $line) = caller;
+ $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
+ "package $package;"; # this won't let them modify, alas
+ local(*dbline) = "::_<$filename";
+ $max = $#dbline;
+ if (($stop,$action) = split(/\0/,$dbline{$line})) {
+ if ($stop eq '1') {
+ $signal |= 1;
+ } else {
+ $evalarg = "\$DB::signal |= do {$stop;}"; &eval;
+ $dbline{$line} =~ s/;9($|\0)/$1/;
+ }
+ }
+ if ($single || $trace || $signal) {
+ $term || &setterm;
+ if ($emacs) {
+ print $LINEINFO "\032\032$filename:$line:0\n";
+ } else {
+ $sub =~ s/\'/::/;
+ $prefix = $sub =~ /::/ ? "" : "${'package'}::";
+ $prefix .= "$sub($filename:";
+ $after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
+ if (length($prefix) > 30) {
+ print $LINEINFO "$prefix$line):\n$line:\t", $dbline[$line], $after;
+ $prefix = "";
+ $infix = ":\t";
+ } else {
+ $infix = "):\t";
+ print $LINEINFO "$prefix$line$infix",$dbline[$line], $after;
+ }
+ for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
+ last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
+ $after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
+ print $LINEINFO "$prefix$i$infix", $dbline[$i], $after;
+ }
+ }
+ }
+ $evalarg = $action, &eval if $action;
+ if ($single || $signal) {
+ local $level = $level + 1;
+ $evalarg = $pre, &eval if $pre;
+ print $OUT $#stack . " levels deep in subroutine calls!\n"
+ if $single & 4;
+ $start = $line;
+ CMD:
+ while (($term || &setterm),
+ defined ($cmd=$term->readline(" DB" . ('<' x $level) .
+ ($#hist+1) . ('>' x $level) .
+ " "))) {
+ { # <-- Do we know what this brace is for?
+ $single = 0;
+ $signal = 0;
+ $cmd =~ s/\\$/\n/ && do {
+ $cmd .= $term->readline(" cont: ");
+ redo CMD;
+ };
+ $cmd =~ /^q$/ && exit 0;
+ $cmd =~ /^$/ && ($cmd = $laststep);
+ push(@hist,$cmd) if length($cmd) > 1;
+ PIPE: {
+ ($i) = split(/\s+/,$cmd);
+ eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
+ $cmd =~ /^h$/ && 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 =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/m) {
+ 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 =~ 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(' ',$2);
+ do 'dumpvar.pl' unless defined &main::dumpvar;
+ if (defined &main::dumpvar) {
+ &main::dumpvar($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 = 1; };
+ $cmd =~ /^f\b\s*(.*)/ && do {
+ $file = $1;
+ if (!$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::)) {{
+ $file = substr($try,2);
+ print "\n$file:\n";
+ }}
+ }
+ if (!defined $main::{'_<' . $file}) {
+ print $OUT "There's no code here matching $file.\n";
+ next CMD;
+ } elsif ($file ne $filename) {
+ *dbline = "::_<$file";
+ $max = $#dbline;
+ $filename = $file;
+ $start = 1;
+ $cmd = "l";
+ } };
+ $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
+ $subname = $1;
+ $subname =~ s/\'/::/;
+ $subname = "main::".$subname unless $subname =~ /::/;
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ @pieces = split(/:/,$sub{$subname});
+ $subrange = pop @pieces;
+ $file = join(':', @pieces);
+ if ($file ne $filename) {
+ *dbline = "::_<$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;
+ } };
+ $cmd =~ /^w\b\s*(\d*)$/ && do {
+ $incr = $window - 1;
+ $start = $1 if $1;
+ $start -= $preview;
+ $cmd = 'l ' . $start . '-' . ($start + $incr); };
+ $cmd =~ /^-$/ && do {
+ $incr = $window - 1;
+ $cmd = 'l ' . ($start-$window*2) . '+'; };
+ $cmd =~ /^l$/ && 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 = (!$2) ? $max : ($4 ? $4 : $2);
+ $end = $max if $end > $max;
+ $i = $2;
+ $i = $line if $i eq '.';
+ $i = 1 if $i < 1;
+ if ($emacs) {
+ print $OUT "\032\032$filename:$i:0\n";
+ $i = $end;
+ } else {
+ for (; $i <= $end; $i++) {
+ print $OUT "$i:\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 $OUT "Deleting all breakpoints...\n";
+ for ($i = 1; $i <= $max ; $i++) {
+ if (defined $dbline{$i}) {
+ $dbline{$i} =~ s/^[^\0]+//;
+ if ($dbline{$i} =~ s/^\0?$//) {
+ delete $dbline{$i};
+ }
+ }
+ }
+ next CMD; };
+ $cmd =~ /^L$/ && do {
+ for ($i = 1; $i <= $max; $i++) {
+ if (defined $dbline{$i}) {
+ 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;
+ }
+ }
+ 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,$i) = ($sub{$subname} =~ /^(.*):(.*)$/);
+ $i += 0;
+ if ($i) {
+ $filename = $file;
+ *dbline = "::_<$filename";
+ $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 {
+ $dbline{$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 {
+ 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 {
+ $pre = action($1);
+ next CMD; };
+ $cmd =~ /^>\s*(.*)/ && do {
+ $post = action($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 {
+ $single = 2;
+ $laststep = $cmd;
+ last CMD; };
+ $cmd =~ /^s$/ && do {
+ $single = 1;
+ $laststep = $cmd;
+ last CMD; };
+ $cmd =~ /^c\b\s*(\d*)\s*$/ && do {
+ $i = $1;
+ if ($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 {
+ $stack[$#stack] |= 1;
+ $doret = 1;
+ last CMD; };
+ $cmd =~ /^T$/ && do {
+ local($p,$f,$l,$s,$h,$a,$e,$r,@a,@sub);
+ for ($i = 1;
+ ($p,$f,$l,$s,$h,$w,$e,$r) = caller($i);
+ $i++) {
+ @a = ();
+ for $arg (@args) {
+ $_ = "$arg";
+ s/([\'\\])/\\$1/g;
+ s/([^\0]*)/'$1'/
+ unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
+ s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
+ s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
+ push(@a, $_);
+ }
+ $w = $w ? '@ = ' : '$ = ';
+ $a = $h ? '(' . join(', ', @a) . ')' : '';
+ $e =~ s/\n\s*\;\s*\Z// if $e;
+ $e =~ s/[\\\']/\\$1/g if $e;
+ if ($r) {
+ $s = "require '$e'";
+ } elsif (defined $r) {
+ $s = "eval '$e'";
+ } elsif ($s eq '(eval)') {
+ $s = "eval {...}";
+ }
+ $f = "file `$f'" unless $f eq '-e';
+ push(@sub, "$w$s$a called from $f line $l\n");
+ last if $signal;
+ }
+ for ($i=0; $i <= $#sub; $i++) {
+ last if $signal;
+ print $OUT $sub[$i];
+ }
+ 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 = $start;
+ eval '
+ for (;;) {
+ ++$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 = $start;
+ eval '
+ for (;;) {
+ --$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$sh\s*/ && do {
+ &system($');
+ 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*/ && do {
+ &system($ENV{SHELL}||"/bin/sh","-c",$');
+ 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:
+ } # <-- Do we know what this brace is for?
+ $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$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 "";
+ $piped= "";
+ }
+ } # CMD:
+ if ($post) {
+ $evalarg = $post; &eval;
+ }
+ } # if ($single || $signal)
+ ($@, $!, $,, $/, $\, $^W) = @saved;
+ ();
+}
+
+# The following code may be executed now:
+# BEGIN {warn 4}
+
+sub sub {
+ print $LINEINFO ' ' x $#stack, "entering $sub\n" if $frame;
+ push(@stack, $single);
+ $single &= 1;
+ $single |= 4 if $#stack == $deep;
+ if (wantarray) {
+ @ret = &$sub;
+ $single |= pop(@stack);
+ $retctx = "list";
+ $lastsub = $sub;
+print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame;
+ @ret;
+ } else {
+ $ret = &$sub;
+ $single |= pop(@stack);
+ $retctx = "scalar";
+ $lastsub = $sub;
+print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame;
+ $ret;
+ }
+}
+
+sub save {
+ @saved = ($@, $!, $,, $/, $\, $^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 = $@;
+ eval "&DB::save";
+ if ($at) {
+ print $OUT $at;
+ } elsif ($onetimeDump) {
+ dumpit(\@res);
+ }
+}
+
+sub dumpit {
+ local ($savout) = select($OUT);
+ do 'dumpvar.pl' unless defined &main::dumpValue;
+ if (defined &main::dumpValue) {
+ &main::dumpValue(shift);
+ } else {
+ print $OUT "dumpvar.pl not available.\n";
+ }
+ select ($savout);
+}
+
+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 {
+ 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;
+ }
+ $LINEINFO = $OUT unless defined $LINEINFO;
+ $lineinfo = $console unless defined $lineinfo;
+ $term->MinLine(2);
+}
+
+sub readline {
+ local $frame = 0;
+ $term->readline(@_);
+}
+
+sub dump_option {
+ my ($opt, $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 = 'N/A';
+ } else {
+ $val = $option{$opt};
+ }
+ $val =~ s/[\\\']/\\$&/g;
+ printf $OUT "%20s = '%s'\n", $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 $val;
+ eval "require '$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 catch {
+ $signal = 1;
+}
+
+sub warn {
+ my($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 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] Continue; optionally inserts a one-time-only breakpoint
+ at the specified line.
+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.
+f filename Switch to viewing filename.
+/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.
+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.
+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\";
+ 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;
+ tkRunning: run Tk while prompting (with ReadLine);
+ signalLevel warnLevel dieLevel: level of verbosity;
+ Option PrintRet affects printing of return value after r command,
+ frame affects printing messages on entry and exit from subroutines.
+ During startup options are initialized from \$ENV{PERLDB_OPTS}.
+ You can put additional initialization options TTY, noTTY,
+ ReadLine, and NonStop there.
+< command Define command to run before each prompt.
+> command Define command to run after 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.
+h [db_command] Get help [on a specific debugger command], enter |h to page.
+h h Summary of debugger commands.
+q or ^D Quit.
+
+";
+ $summary = <<"END_SUM";
+List/search source lines: Control script execution:
+ l [ln|sub] List source code T Stack trace
+ - List previous lines 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/ Search forward r Return from subroutine
+ ?pattern? Search backward c [line] Continue until line
+Debugger controls: L List break pts & actions
+ O [...] Set debugger options t [expr] Toggle trace [trace expr]
+ < command Command for before prompt b [ln] [c] Set breakpoint
+ > command Command for 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
+Data Examination: expr Execute perl code, also see: s,n,t expr
+ 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]\".
+ x expr Evals expression in array context, dumps the result.
+ p expr Print expression (uses script's current package).
+END_SUM
+ # '); # Fix balance of Emacs parsing
+}
+
+
+sub diesignal {
+ $SIG{'ABRT'} = DEFAULT;
+ kill 'ABRT', $$ if $panic++;
+ print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue
+ local $SIG{__WARN__} = '';
+ require Carp;
+ local $Carp::CarpLevel = 2; # mydie + confess
+ &warn(Carp::longmess("Signal @_"));
+ kill 'ABRT', $$;
+}
+
+sub dbwarn {
+ local $SIG{__WARN__} = '';
+ require Carp;
+ #&warn("Entering dbwarn\n");
+ my ($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 $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 $dieLevel < 2;
+ }
+ require Carp;
+ # We do not want to debug this chunk (automatic disabling works
+ # inside DB::DB, but not in Carp).
+ my ($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 diehard { # Always dump, useful if fatal is
+# # deeply in evals.
+# local $SIG{__DIE__} = '';
+# require Carp;
+# # We do not want to debug this (automatic disabling works inside DB::DB)
+# my ($mysingle,$mytrace) = ($single,$trace);
+# $single = 0; $trace = 0;
+# my $mess = Carp::longmess(@_);
+# ($single,$trace) = ($mysingle,$mytrace);
+# 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;
+}
+
+# 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{__WARN__} = "DB::dbwarn";
+ #$SIG{__DIE__} = 'DB::dbdie';
+ #$SIG{SEGV} = "DB::diesignal";
+ #$SIG{BUS} = "DB::diesignal";
+ $SIG{INT} = "DB::catch";
+ #$SIG{FPE} = "DB::catch";
+ #warn "SIGFPE installed";
+ $warnLevel = 1 unless defined $warnLevel;
+ $dieLevel = 1 unless defined $dieLevel;
+ $signalLevel = 1 unless defined $signalLevel;
+
+ $db_stop = 0; # Compiler warning
+ $db_stop = 1 << 30;
+ $level = 0; # Level of recursive debugging
+}
+
+#use Carp; # This did break, left for debuggin
+
+1;
+package DB;
+
# modified Perl debugger, to be run from Emacs in perldb-mode
# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
# Johan Vromans -- upgrade to 4.0 pl 10
diff --git a/lib/sigtrap.pm b/lib/sigtrap.pm
index dd4df906fa..e099ac4658 100644
--- a/lib/sigtrap.pm
+++ b/lib/sigtrap.pm
@@ -47,19 +47,29 @@ sub trap {
syswrite(STDERR, "\n", 1);
# Now go for broke.
- for ($i = 1; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) {
- @a = ();
+ for ($i = 1; ($p,$f,$l,$s,$h,$w,$e,$r) = caller($i); $i++) {
+ @a = ();
for $arg (@args) {
$_ = "$arg";
- s/'/\\'/g;
+ s/([\'\\])/\\$1/g;
s/([^\0]*)/'$1'/
- unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
+ 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, $_);
}
$w = $w ? '@ = ' : '$ = ';
$a = $h ? '(' . join(', ', @a) . ')' : '';
+ $e =~ s/\n\s*\;\s*\Z// if $e;
+ $e =~ s/[\\\']/\\$1/g if $e;
+ if ($r) {
+ $s = "require '$e'";
+ } elsif (defined $r) {
+ $s = "eval '$e'";
+ } elsif ($s eq '(eval)') {
+ $s = "eval {...}";
+ }
+ $f = "file `$f'" unless $f eq '-e';
$mess = "$w$s$a called from $f line $l\n";
syswrite(STDERR, $mess, length($mess));
}
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