# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 0.96;
-$header = "perl5db.pl patch level $VERSION";
-
-# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
-# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
-
-# modified Perl debugger, to be run from Emacs in perldb-mode
-# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
-# Johan Vromans -- upgrade to 4.0 pl 10
-# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
+$VERSION = 1.07;
+$header = "perl5db.pl version $VERSION";
#
# 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
+# 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
# $DB::sub being the called subroutine. It also inserts a BEGIN
# {require 'perl5db.pl'} before the first line.
#
# After each `require'd file is compiled, but before it is executed, a
-# call to DB::postponed(*{"_<$filename"}) is emulated. Here the
+# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
# $filename is the expanded name of the `require'd file (as found as
# value of %INC).
#
# if caller() is called from the package DB, it provides some
# additional data.
#
-# The array @{"_<$filename"} is the line-by-line contents of
+# The array @{$main::{'_<'.$filename} is the line-by-line contents of
# $filename.
#
-# The hash %{"_<$filename"} contains breakpoints and action (it is
+# 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".
+# The scalar ${'_<'.$filename} contains $filename.
#
# Note that no subroutine call is possible until &DB::sub is defined
-# (for subroutines defined outside this file). In fact the same is
+# (for subroutines defined outside of the package DB). In fact the same is
# true if $deep is not defined.
#
# $Log: perldb.pl,v $
# LineInfo - file or pipe to print line number info to. If it is a
# pipe, a short "emacs like" message is used.
#
+# RemotePort - host:port to connect to on remote host for remote debugging.
+#
# Example $rcfile: (delete leading hashes!)
#
# &parse_options("NonStop=1 LineInfo=db.out");
# reset LineInfo to something "interactive"!)
#
##################################################################
+
+# 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 ;-)
+
# Changelog:
# A lot of things changed after 0.94. First of all, core now informs
# 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').
+# Changes: 1.07: Many fixed by tchrist 13-March-2000
+# BUG FIXES:
+# + Added bare mimimal security checks on perldb rc files, plus
+# comments on what else is needed.
+# + Fixed the ornaments that made "|h" completely unusable.
+# They are not used in print_help if they will hurt. Strip pod
+# if we're paging to less.
+# + Fixed mis-formatting of help messages caused by ornaments
+# to restore Larry's original formatting.
+# + Fixed many other formatting errors. The code is still suboptimal,
+# and needs a lot of work at restructuing. It's also misindented
+# in many places.
+# + Fixed bug where trying to look at an option like your pager
+# shows "1".
+# + Fixed some $? processing. Note: if you use csh or tcsh, you will
+# lose. You should consider shell escapes not using their shell,
+# or else not caring about detailed status. This should really be
+# unified into one place, too.
+# + Fixed bug where invisible trailing whitespace on commands hoses you,
+# tricking Perl into thinking you wern't calling a debugger command!
+# + Fixed bug where leading whitespace on commands hoses you. (One
+# suggests a leading semicolon or any other irrelevant non-whitespace
+# to indicate literal Perl code.)
+# + Fixed bugs that ate warnings due to wrong selected handle.
+# + Fixed a precedence bug on signal stuff.
+# + Fixed some unseemly wording.
+# + Fixed bug in help command trying to call perl method code.
+# + Fixed to call dumpvar from exception handler. SIGPIPE killed us.
+# ENHANCEMENTS:
+# + Added some comments. This code is still nasty spaghetti.
+# + Added message if you clear your pre/post command stacks which was
+# very easy to do if you just typed a bare >, <, or {. (A command
+# without an argument should *never* be a destructive action; this
+# API is fundamentally screwed up; likewise option setting, which
+# is equally buggered.)
+# + Added command stack dump on argument of "?" for >, <, or {.
+# + Added a semi-built-in doc viewer command that calls man with the
+# proper %Config::Config path (and thus gets caching, man -k, etc),
+# or else perldoc on obstreperous platforms.
+# + Added to and rearranged the help information.
+# + Detected apparent misuse of { ... } to declare a block; this used
+# to work but now is a command, and mysteriously gave no complaint.
####################################################################
$dumpvar::quoteHighBit,
$dumpvar::printUndef,
$dumpvar::globPrint,
- $readline::Tk_toloop,
$dumpvar::usageOnly,
@ARGS,
$Carp::CarpLevel,
$panic,
- $first_time,
+ $second_time,
) if 0;
# Command-line + PERLLIB:
# (local $^W cannot help - other packages!).
$inhibit_exit = $option{PrintRet} = 1;
-@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages
+@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused
compactDump veryCompact quote HighBit undefPrint
- globPrint PrintRet UsageOnly frame
- TTY noTTY ReadLine NonStop LineInfo
- recallCommand ShellBang pager tkRunning
- signalLevel warnLevel dieLevel);
+ globPrint PrintRet UsageOnly frame AutoTrace
+ TTY noTTY ReadLine NonStop LineInfo maxTraceLen
+ recallCommand ShellBang pager tkRunning ornaments
+ signalLevel warnLevel dieLevel inhibit_exit
+ ImmediateStop bareStringify
+ RemotePort);
%optionVars = (
hashDepth => \$dumpvar::hashDepth,
arrayDepth => \$dumpvar::arrayDepth,
DumpDBFiles => \$dumpvar::dumpDBFiles,
DumpPackages => \$dumpvar::dumpPackages,
+ DumpReused => \$dumpvar::dumpReused,
HighBit => \$dumpvar::quoteHighBit,
undefPrint => \$dumpvar::printUndef,
globPrint => \$dumpvar::globPrint,
- tkRunning => \$readline::Tk_toloop,
UsageOnly => \$dumpvar::usageOnly,
- frame => \$frame,
+ bareStringify => \$dumpvar::bareStringify,
+ frame => \$frame,
+ AutoTrace => \$trace,
+ inhibit_exit => \$inhibit_exit,
+ maxTraceLen => \$maxtrace,
+ ImmediateStop => \$ImmediateStop,
+ RemotePort => \$remoteport,
);
%optionAction = (
signalLevel => \&signalLevel,
warnLevel => \&warnLevel,
dieLevel => \&dieLevel,
+ tkRunning => \&tkRunning,
+ ornaments => \&ornaments,
+ RemotePort => \&RemotePort,
);
%optionRequire = (
);
# 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 $pretype;
+$rl = 1 unless defined $rl;
+$warnLevel = 0 unless defined $warnLevel;
+$dieLevel = 0 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 $pager;
+
+&pager(
+ (defined($ENV{PAGER})
+ ? $ENV{PAGER}
+ : ($^O eq 'os2'
+ ? 'cmd /c more'
+ : 'more'))) unless defined $pager;
+setman();
&recallCommand("!") unless defined $prc;
&shellBang("!") unless defined $psh;
+$maxtrace = 400 unless defined $maxtrace;
-if (-e "/dev/tty") {
+if (-e "/dev/tty") { # this is the wrong metric!
$rcfile=".perldb";
} else {
$rcfile="perldb.ini";
}
+# This isn't really safe, because there's a race
+# between checking and opening. The solution is to
+# open and fstat the handle, but then you have to read and
+# eval the contents. But then the silly thing gets
+# your lexical scope, which is unfortunately at best.
+sub safe_do {
+ my $file = shift;
+
+ # Just exactly what part of the word "CORE::" don't you understand?
+ local $SIG{__WARN__};
+ local $SIG{__DIE__};
+
+ unless (is_safe_file($file)) {
+ CORE::warn <<EO_GRIPE;
+perldb: Must not source insecure rcfile $file.
+ You or the superuser must be the owner, and it must not
+ be writable by anyone but its owner.
+EO_GRIPE
+ return;
+ }
+
+ do $file;
+ CORE::warn("perldb: couldn't parse $file: $@") if $@;
+}
+
+
+# Verifies that owner is either real user or superuser and that no
+# one but owner may write to it. This function is of limited use
+# when called on a path instead of upon a handle, because there are
+# no guarantees that filename (by dirent) whose file (by ino) is
+# eventually accessed is the same as the one tested.
+# Assumes that the file's existence is not in doubt.
+sub is_safe_file {
+ my $path = shift;
+ stat($path) || return; # mysteriously vaporized
+ my($dev,$ino,$mode,$nlink,$uid,$gid) = stat(_);
+
+ return 0 if $uid != 0 && $uid != $<;
+ return 0 if $mode & 022;
+ return 1;
+}
+
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}/$rcfile";
+ safe_do("./$rcfile");
+}
+elsif (defined $ENV{HOME} && -f "$ENV{HOME}/$rcfile") {
+ safe_do("$ENV{HOME}/$rcfile");
+}
+elsif (defined $ENV{LOGDIR} && -f "$ENV{LOGDIR}/$rcfile") {
+ safe_do("$ENV{LOGDIR}/$rcfile");
}
if (defined $ENV{PERLDB_OPTS}) {
parse_options($ENV{PERLDB_OPTS});
}
+# Here begin the unreadable code. It needs fixing.
+
if (exists $ENV{PERLDB_RESTART}) {
delete $ENV{PERLDB_RESTART};
# $restart = 1;
%postponed = get_list("PERLDB_POSTPONE");
my @had_breakpoints= get_list("PERLDB_VISITED");
for (0 .. $#had_breakpoints) {
- %{$postponed_file{$had_breakpoints[$_]}} = get_list("PERLDB_FILE_$_");
+ my %pf = get_list("PERLDB_FILE_$_");
+ $postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
}
my %opt = get_list("PERLDB_OPT");
my ($opt,$val);
}
@INC = get_list("PERLDB_INC");
@ini_INC = @INC;
+ $pretype = [get_list("PERLDB_PRETYPE")];
+ $pre = [get_list("PERLDB_PRE")];
+ $post = [get_list("PERLDB_POST")];
+ @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead);
}
if ($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;
+ # Is Perl being run from a slave editor or graphical debugger?
+ $slave_editor = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs'));
+ $rl = 0, shift(@main::ARGV) if $slave_editor;
#require Term::ReadLine;
- if (-e "/dev/tty") {
+ if ($^O eq 'cygwin') {
+ # /dev/tty is binary. use stdin for textmode
+ undef $console;
+ } elsif (-e "/dev/tty") {
$console = "/dev/tty";
- } elsif (-e "con") {
+ } elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
$console = "con";
} else {
$console = "sys\$command";
}
+ if (($^O eq 'MSWin32') and ($slave_editor or defined $ENV{EMACS})) {
+ $console = undef;
+ }
+
# Around a bug:
- if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2
+ if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2
+ $console = undef;
+ }
+
+ if ($^O eq 'epoc') {
$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';
+ if (defined $remoteport) {
+ require IO::Socket;
+ $OUT = new IO::Socket::INET( Timeout => '10',
+ PeerAddr => $remoteport,
+ Proto => 'tcp',
+ );
+ if (!$OUT) { die "Unable to connect to remote host: $remoteport\n"; }
+ $IN = $OUT;
}
- # so open("|more") can read from STDOUT and so we don't dingle stdin
- $IN = \*IN;
+ else {
+ 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;
+ $OUT = \*OUT;
+ }
select($OUT);
$| = 1; # for DB::OUT
select(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",
+ print $OUT ("Editor support ",
+ $slave_editor ? "enabled" : "available",
".\n");
- print $OUT "\nEnter h or `h h' for help.\n\n";
+ print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
}
}
&afterinit();
}
+$I_m_init = 1;
+
############################################################ Subroutines
sub DB {
- unless ($first_time++) { # Do when-running init
- if ($runnonstop) { # Disable until signal
- for ($i=0; $i <= $#stack; ) {
+ # _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_depth; ) {
$stack[$i++] &= ~1;
}
$single = 0;
- return;
+ # return; # Would not print trace!
+ } elsif ($ImmediateStop) {
+ $ImmediateStop = 0;
+ $signal = 1;
}
}
+ $runnonstop = 0 if $single or $signal; # Disable it if interactive.
&save;
($package, $filename, $line) = caller;
$filename_ini = $filename;
- $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
+ $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
"package $package;"; # this won't let them modify, alas
- local(*dbline) = "::_<$filename";
+ 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;
+ $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval;
$dbline{$line} =~ s/;9($|\0)/$1/;
}
}
- if ($single || $trace || $signal) {
- $term || &setterm;
- if ($emacs) {
+ my $was_signal = $signal;
+ if ($trace & 2) {
+ for (my $n = 0; $n <= $#to_watch; $n++) {
+ $evalarg = $to_watch[$n];
+ local $onetimeDump; # Do not output results
+ my ($val) = &eval; # Fix context (&eval is doing array)?
+ $val = ( (defined $val) ? "'$val'" : 'undef' );
+ if ($val ne $old_watch[$n]) {
+ $signal = 1;
+ print $OUT <<EOP;
+Watchpoint $n:\t$to_watch[$n] changed:
+ old value:\t$old_watch[$n]
+ new value:\t$val
+EOP
+ $old_watch[$n] = $val;
+ }
+ }
+ }
+ if ($trace & 4) { # User-installed watch
+ return if watchfunction($package, $filename, $line)
+ and not $single and not $was_signal and not ($trace & ~4);
+ }
+ $was_signal = $signal;
+ $signal = 0;
+ if ($single || ($trace & 1) || $was_signal) {
+ if ($slave_editor) {
$position = "\032\032$filename:$line:0\n";
print $LINEINFO $position;
+ } elsif ($package eq 'DB::fake') {
+ $term || &setterm;
+ print_help(<<EOP);
+Debugged program terminated. Use B<q> to quit or B<R> to restart,
+ use B<O> I<inhibit_exit> to avoid stopping after program termination,
+ B<h q>, B<h R> or B<h O> to get additional info.
+EOP
+ $package = 'main';
+ $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
+ "package $package;"; # this won't let them modify, alas
} else {
$sub =~ s/\'/::/;
$prefix = $sub =~ /::/ ? "" : "${'package'}::";
$after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
if (length($prefix) > 30) {
$position = "$prefix$line):\n$line:\t$dbline[$line]$after";
- print $LINEINFO $position;
$prefix = "";
$infix = ":\t";
} else {
$infix = "):\t";
$position = "$prefix$line$infix$dbline[$line]$after";
+ }
+ if ($frame) {
+ print $LINEINFO ' ' x $stack_depth, "$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";
- print $LINEINFO $incr_pos;
$position .= $incr_pos;
+ if ($frame) {
+ print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
+ } else {
+ print $LINEINFO $incr_pos;
+ }
}
}
}
$evalarg = $action, &eval if $action;
- if ($single || $signal) {
+ if ($single || $was_signal) {
local $level = $level + 1;
- map {$evalarg = $_, &eval} @$pre;
- print $OUT $#stack . " levels deep in subroutine calls!\n"
+ foreach $evalarg (@$pre) {
+ &eval;
+ }
+ print $OUT $stack_depth . " levels deep in subroutine calls!\n"
if $single & 4;
$start = $line;
- @typeahead = @$pretype, @typeahead;
+ $incr = -1; # for backward motion.
+ @typeahead = (@$pretype, @typeahead);
CMD:
while (($term || &setterm),
+ ($term_pid == $$ or &resetterm),
defined ($cmd=&readline(" DB" . ('<' x $level) .
($#hist+1) . ('>' x $level) .
- " "))) {
+ " ")))
+ {
$single = 0;
$signal = 0;
$cmd =~ s/\\$/\n/ && do {
$cmd .= &readline(" cont: ");
redo CMD;
};
- $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
$cmd =~ /^$/ && ($cmd = $laststep);
push(@hist,$cmd) if length($cmd) > 1;
PIPE: {
+ $cmd =~ s/^\s+//s; # trim annoying leading whitespace
+ $cmd =~ s/\s+$//s; # trim annoying trailing whitespace
($i) = split(/\s+/,$cmd);
- eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
+ if ($alias{$i}) {
+ # squelch the sigmangler
+ local $SIG{__DIE__};
+ local $SIG{__WARN__};
+ eval "\$cmd =~ $alias{$i}";
+ if ($@) {
+ print $OUT "Couldn't evaluate `$i' alias: $@";
+ next CMD;
+ }
+ }
+ $cmd =~ /^q$/ && ($fall_off_end = 1) && exit $?;
$cmd =~ /^h$/ && do {
- print $OUT $help;
+ print_help($help);
next CMD; };
$cmd =~ /^h\s+h$/ && do {
- print $OUT $summary;
+ print_help($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;
+ # support long commands; otherwise bogus errors
+ # happen when you ask for h on <CR> for example
+ $cmd =~ /^h\s+(\S.*)$/ && do {
+ my $asked = $1; # for proper errmsg
+ my $qasked = quotemeta($asked); # for searching
+ # XXX: finds CR but not <CR>
+ if ($help =~ /^<?(?:[IB]<)$qasked/m) {
+ while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) {
+ print_help($1);
}
} else {
- print $OUT "`$asked' is not a debugger command.\n";
+ print_help("B<$asked> is not a debugger command.\n");
}
next CMD; };
$cmd =~ /^t$/ && do {
- $trace = !$trace;
- print $OUT "Trace = ".($trace?"on":"off")."\n";
+ $trace ^= 1;
+ print $OUT "Trace = " .
+ (($trace & 1) ? "on" : "off" ) . "\n";
next CMD; };
$cmd =~ /^S(\s+(!)?(.+))?$/ && do {
$Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1;
if (defined &main::dumpvar) {
local $frame = 0;
local $doret = -2;
- &main::dumpvar($packname,@vars);
+ # must detect sigpipe failures
+ eval { &main::dumpvar($packname,@vars) };
+ if ($@) {
+ die unless $@ =~ /dumpvar print failed/;
+ }
} else {
print $OUT "dumpvar.pl not available.\n";
}
select ($savout);
next CMD; };
$cmd =~ s/^x\b/ / && do { # So that will be evaled
- $onetimeDump = 1; };
+ $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";
}
if (!defined $main::{'_<' . $file}) {
if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
- $file = substr($try,2);
- print "\n$file:\n";
+ $try = substr($try,2);
+ print $OUT "Choosing $try matching `$file':\n";
+ $file = $try;
}}
}
if (!defined $main::{'_<' . $file}) {
- print $OUT "There's no code here matching $file.\n";
+ print $OUT "No file matching `$file' is loaded.\n";
next CMD;
} elsif ($file ne $filename) {
- *dbline = "::_<$file";
+ *dbline = $main::{'_<' . $file};
$max = $#dbline;
$filename = $file;
$start = 1;
$cmd = "l";
- } };
- $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
+ } else {
+ print $OUT "Already in $file.\n";
+ next CMD;
+ }
+ };
+ $cmd =~ s/^l\s+-\s*$/-/;
+ $cmd =~ /^([lb])\b\s*(\$.*)/s && do {
+ $evalarg = $2;
+ my ($s) = &eval;
+ print($OUT "Error: $@\n"), next CMD if $@;
+ $s = CvGV_name($s);
+ print($OUT "Interpreted as: $1 $s\n");
+ $cmd = "$1 $s";
+ };
+ $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*(\[.*\])?)/s && do {
$subname = $1;
$subname =~ s/\'/::/;
- $subname = "main::".$subname unless $subname =~ /::/;
+ $subname = $package."::".$subname
+ unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
- @pieces = split(/:/,$sub{$subname});
+ @pieces = split(/:/,find_sub($subname) || $sub{$subname});
$subrange = pop @pieces;
$file = join(':', @pieces);
if ($file ne $filename) {
- *dbline = "::_<$file";
+ print $OUT "Switching to file '$file'.\n"
+ unless $slave_editor;
+ *dbline = $main::{'_<' . $file};
$max = $#dbline;
$filename = $file;
}
next CMD;
} };
$cmd =~ /^\.$/ && do {
+ $incr = -1; # for backward motion.
$start = $line;
$filename = $filename_ini;
- *dbline = "::_<$filename";
+ *dbline = $main::{'_<' . $filename};
$max = $#dbline;
print $LINEINFO $position;
next CMD };
#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-$window*2) . '+'; };
+ $cmd = 'l ' . ($start) . '+'; };
$cmd =~ /^l$/ && do {
$incr = $window - 1;
$cmd = 'l ' . $start . '-' . ($start + $incr); };
$i = $2;
$i = $line if $i eq '.';
$i = 1 if $i < 1;
- if ($emacs) {
+ $incr = $end - $i;
+ if ($slave_editor) {
print $OUT "\032\032$filename:$i:0\n";
$i = $end;
} else {
$arrow = ($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;
+ $i++, last if $signal;
}
+ print $OUT "\n" unless $dbline[$i-1] =~ /\n$/;
}
$start = $i; # remember in case they want more
$start = $max if $start > $max;
print $OUT "Deleting all breakpoints...\n";
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
my $max = $#dbline;
my $was;
}
}
}
+
+ if (not $had_breakpoints{$file} &= ~1) {
+ delete $had_breakpoints{$file};
+ }
}
undef %postponed;
undef %postponed_file;
undef %break_on_load;
- undef %had_breakpoints;
next CMD; };
$cmd =~ /^L$/ && do {
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ 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 $OUT "$file:\n" unless $was++;
print $OUT " $i:\t", $dbline[$i];
($stop,$action) = split(/\0/, $dbline{$i});
print $OUT " break if (", $stop, ")\n"
print $OUT "Postponed breakpoints in files:\n";
my ($file, $line);
for $file (keys %postponed_file) {
- my %db = %{$postponed_file{$file}};
- next unless keys %db;
+ my $db = $postponed_file{$file};
print $OUT " $file:\n";
- for $line (sort {$a <=> $b} keys %db) {
- print $OUT " $i:\n";
- my ($stop,$action) = split(/\0/, $db{$line});
+ 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"
last if $signal;
}
}
+ if ($trace & 2) {
+ print $OUT "Watch-expressions:\n";
+ my $expr;
+ for $expr (@to_watch) {
+ print $OUT " $expr\n";
+ last if $signal;
+ }
+ }
next CMD; };
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
- my $file = $1;
+ 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;
+ $had_breakpoints{$file} |= 1;
print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
next CMD; };
- $cmd =~ /^b\b\s*postpone\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
- my $cond = $2 || '1';
- my $subname = $1;
- $subname =~ s/\'/::/;
+ $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ my $cond = length $3 ? $3 : '1';
+ my ($subname, $break) = ($2, $1 eq 'postpone');
+ $subname =~ s/\'/::/g;
$subname = "${'package'}::" . $subname
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
- $postponed{$subname} = "break +0 if $cond";
+ $postponed{$subname} = $break
+ ? "break +0 if $cond" : "compile";
next CMD; };
- $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do {
$subname = $1;
- $cond = $2 || '1';
- $subname =~ s/\'/::/;
+ $cond = length $2 ? $2 : '1';
+ $subname =~ s/\'/::/g;
$subname = "${'package'}::" . $subname
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
# Filename below can contain ':'
- ($file,$i) = ($sub{$subname} =~ /^(.*):(.*)$/);
+ ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
$i += 0;
if ($i) {
- $filename = $file;
- *dbline = "::_<$filename";
- $had_breakpoints{$filename} = 1;
+ local $filename = $file;
+ local *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename} |= 1;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
$dbline{$i} =~ s/^[^\0]*/$cond/;
}
next CMD; };
$cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
- $i = ($1?$1:$line);
- $cond = $2 || '1';
+ $i = $1 || $line;
+ $cond = length $2 ? $2 : '1';
if ($dbline[$i] == 0) {
print $OUT "Line $i not breakable.\n";
} else {
- $had_breakpoints{$filename} = 1;
+ $had_breakpoints{$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 '';
+ $cmd =~ /^d\b\s*(\d*)/ && do {
+ $i = $1 || $line;
+ if ($dbline[$i] == 0) {
+ print $OUT "Line $i not breakable.\n";
+ } else {
+ $dbline{$i} =~ s/^[^\0]*//;
+ delete $dbline{$i} if $dbline{$i} eq '';
+ }
next CMD; };
$cmd =~ /^A$/ && do {
+ print $OUT "Deleting all actions...\n";
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
my $max = $#dbline;
my $was;
delete $dbline{$i} if $dbline{$i} eq '';
}
}
+
+ unless ($had_breakpoints{$file} &= ~2) {
+ delete $had_breakpoints{$file};
+ }
}
next CMD; };
$cmd =~ /^O\s*$/ && do {
push @$post, action($1);
next CMD; };
$cmd =~ /^<\s*(.*)/ && do {
- $pre = [], next CMD unless $1;
+ unless ($1) {
+ print $OUT "All < actions cleared.\n";
+ $pre = [];
+ next CMD;
+ }
+ if ($1 eq '?') {
+ unless (@$pre) {
+ print $OUT "No pre-prompt Perl actions.\n";
+ next CMD;
+ }
+ print $OUT "Perl commands run before each prompt:\n";
+ for my $action ( @$pre ) {
+ print $OUT "\t< -- $action\n";
+ }
+ next CMD;
+ }
$pre = [action($1)];
next CMD; };
$cmd =~ /^>\s*(.*)/ && do {
- $post = [], next CMD unless $1;
+ unless ($1) {
+ print $OUT "All > actions cleared.\n";
+ $post = [];
+ next CMD;
+ }
+ if ($1 eq '?') {
+ unless (@$post) {
+ print $OUT "No post-prompt Perl actions.\n";
+ next CMD;
+ }
+ print $OUT "Perl commands run after each prompt:\n";
+ for my $action ( @$post ) {
+ print $OUT "\t> -- $action\n";
+ }
+ next CMD;
+ }
$post = [action($1)];
next CMD; };
$cmd =~ /^\{\{\s*(.*)/ && do {
+ if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,2))) {
+ print $OUT "{{ is now a debugger command\n",
+ "use `;{{' if you mean Perl code\n";
+ $cmd = "h {{";
+ redo CMD;
+ }
push @$pretype, $1;
next CMD; };
$cmd =~ /^\{\s*(.*)/ && do {
- $pretype = [], next CMD unless $1;
+ unless ($1) {
+ print $OUT "All { actions cleared.\n";
+ $pretype = [];
+ next CMD;
+ }
+ if ($1 eq '?') {
+ unless (@$pretype) {
+ print $OUT "No pre-prompt debugger actions.\n";
+ next CMD;
+ }
+ print $OUT "Debugger commands run before each prompt:\n";
+ for my $action ( @$pretype ) {
+ print $OUT "\t{ -- $action\n";
+ }
+ next CMD;
+ }
+ if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,1))) {
+ print $OUT "{ is now a debugger command\n",
+ "use `;{' if you mean Perl code\n";
+ $cmd = "h {";
+ redo CMD;
+ }
$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";
+ $cmd =~ /^a\b\s*(\d*)\s*(.*)/ && do {
+ $i = $1 || $line; $j = $2;
+ if (length $j) {
+ if ($dbline[$i] == 0) {
+ print $OUT "Line $i may not have an action.\n";
+ } else {
+ $had_breakpoints{$filename} |= 2;
+ $dbline{$i} =~ s/\0[^\0]*//;
+ $dbline{$i} .= "\0" . action($j);
+ }
} else {
$dbline{$i} =~ s/\0[^\0]*//;
- $dbline{$i} .= "\0" . action($j);
+ delete $dbline{$i} if $dbline{$i} eq '';
}
next CMD; };
$cmd =~ /^n$/ && do {
last CMD; };
$cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
end_report(), next CMD if $finished and $level <= 1;
- $i = $1;
+ $subname = $i = $1;
+ # Probably not needed, since we finish an interactive
+ # sub-session anyway...
+ # local $filename = $filename;
+ # local *dbline = *dbline; # XXX Would this work?!
if ($i =~ /\D/) { # subroutine name
- ($file,$i) = ($sub{$i} =~ /^(.*):(.*)$/);
+ $subname = $package."::".$subname
+ unless $subname =~ /::/;
+ ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
$i += 0;
if ($i) {
$filename = $file;
- *dbline = "::_<$filename";
- $had_breakpoints{$filename}++;
+ *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename} |= 1;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
} else {
}
$dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p.
}
- for ($i=0; $i <= $#stack; ) {
+ for ($i=0; $i <= $stack_depth; ) {
$stack[$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;
+ $stack[$stack_depth] |= 1;
+ $doret = $option{PrintRet} ? $stack_depth - 1 : -2;
last CMD; };
$cmd =~ /^R$/ && do {
print $OUT "Warning: some settings and command-line options may be lost!\n";
set_list("PERLDB_INC", @ini_INC);
if ($0 eq '-e') {
for (1..$#{'::_<-e'}) { # The first line is PERL5DB
- chomp ($cl = $ {'::_<-e'}[$_]);
+ chomp ($cl = ${'::_<-e'}[$_]);
push @script, '-e', $cl;
}
} else {
my @hard;
for (0 .. $#had_breakpoints) {
my $file = $had_breakpoints[$_];
- *dbline = "::_<$file";
- next unless %dbline or %{$postponed_file{$file}};
+ *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}};
+ if $postponed_file{$file};
set_list("PERLDB_FILE_$_", %dbline, @add);
}
for (@hard) { # Yes, really-really...
# Find the subroutines in this eval
- *dbline = "::_<$_";
+ *dbline = $main::{'_<' . $_};
my ($quoted, $sub, %subs, $line) = quotemeta $_;
for $sub (keys %sub) {
next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
}
}
set_list("PERLDB_POSTPONE", %postponed);
+ set_list("PERLDB_PRETYPE", @$pretype);
+ set_list("PERLDB_PRE", @$pre);
+ set_list("PERLDB_POST", @$post);
+ set_list("PERLDB_TYPEAHEAD", @typeahead);
$ENV{PERLDB_RESTART} = 1;
- #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS";
- exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS;
+ #print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS";
+ exec $^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS;
print $OUT "exec failed: $!\n";
last CMD; };
$cmd =~ /^T$/ && do {
- print_trace($OUT, 3); # skip DB print_trace dump_trace
+ print_trace($OUT, 1); # skip DB
+ next CMD; };
+ $cmd =~ /^W\s*$/ && do {
+ $trace &= ~2;
+ @to_watch = @old_watch = ();
+ next CMD; };
+ $cmd =~ /^W\b\s*(.*)/s && do {
+ push @to_watch, $1;
+ $evalarg = $1;
+ my ($val) = &eval;
+ $val = (defined $val) ? "'$val'" : 'undef' ;
+ push @old_watch, $val;
+ $trace |= 2;
next CMD; };
$cmd =~ /^\/(.*)$/ && do {
$inpat = $1;
$inpat =~ s:([^\\])/$:$1:;
if ($inpat ne "") {
+ # squelch the sigmangler
+ local $SIG{__DIE__};
+ local $SIG{__WARN__};
eval '$inpat =~ m'."\a$inpat\a";
if ($@ ne "") {
print $OUT "$@";
$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 ($emacs) {
+ if ($slave_editor) {
print $OUT "\032\032$filename:$start:0\n";
} else {
print $OUT "$start:\t", $dbline[$start], "\n";
$inpat = $1;
$inpat =~ s:([^\\])\?$:$1:;
if ($inpat ne "") {
+ # squelch the sigmangler
+ local $SIG{__DIE__};
+ local $SIG{__WARN__};
eval '$inpat =~ m'."\a$inpat\a";
if ($@ ne "") {
- print $OUT "$@";
+ 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 ($emacs) {
+ if ($slave_editor) {
print $OUT "\032\032$filename:$start:0\n";
} else {
print $OUT "$start:\t", $dbline[$start], "\n";
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;
+ $i = $1 ? ($#hist-($2||1)) : ($2||$#hist);
+ $cmd = $hist[$i];
+ print $OUT $cmd, "\n";
redo CMD; };
$cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
&system($1);
print $OUT "No such command!\n\n";
next CMD;
}
- $cmd = $hist[$i] . "\n";
- print $OUT $cmd;
+ $cmd = $hist[$i];
+ print $OUT $cmd, "\n";
redo CMD; };
$cmd =~ /^$sh$/ && do {
&system($ENV{SHELL}||"/bin/sh");
next CMD; };
$cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
+ # XXX: using csh or tcsh destroys sigint retvals!
+ #&system($1); # use this instead
&system($ENV{SHELL}||"/bin/sh","-c",$1);
next CMD; };
$cmd =~ /^H\b\s*(-(\d+))?/ && do {
- $end = $2?($#hist-$2):0;
+ $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; };
+ $cmd =~ /^(?:man|(?:perl)?doc)\b(?:\s+([^(]*))?$/ && do {
+ runman($1);
+ 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 {
+ $cmd =~ s/^=\s*// && do {
+ my @keys;
+ if (length $cmd == 0) {
+ @keys = sort keys %alias;
+ }
+ elsif (my($k,$v) = ($cmd =~ /^(\S+)\s+(\S.*)/)) {
+ # can't use $_ or kill //g state
+ for my $x ($k, $v) { $x =~ s/\a/\\a/g }
+ $alias{$k} = "s\a$k\a$v\a";
+ # squelch the sigmangler
+ local $SIG{__DIE__};
+ local $SIG{__WARN__};
+ unless (eval "sub { s\a$k\a$v\a }; 1") {
+ print $OUT "Can't alias $k to $v: $@\n";
+ delete $alias{$k};
+ next CMD;
+ }
+ @keys = ($k);
+ }
+ else {
+ @keys = ($cmd);
+ }
+ for my $k (@keys) {
+ if ((my $v = $alias{$k}) =~ s\as\a$k\a(.*)\a$\a1\a) {
+ print $OUT "$k\t= $1\n";
+ }
+ elsif (defined $alias{$k}) {
print $OUT "$k\t$alias{$k}\n";
- };
- };
- };
+ }
+ else {
+ print "No alias for $k\n";
+ }
+ }
next CMD; };
$cmd =~ /^\|\|?\s*[^|]/ && do {
if ($pager =~ /^\|/) {
} else {
open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT");
}
+ fix_less();
unless ($piped=open(OUT,$pager)) {
&warn("Can't pipe output to `$pager'");
if ($pager =~ /^\|/) {
- open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
+ open(OUT,">&STDOUT") # XXX: lost message
+ || &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");
+ open(OUT,">&STDOUT") # XXX: lost message
+ || &warn("Can't restore DB::OUT");
}
next CMD;
}
$SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
- && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE};
+ && ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE});
$selected= select(OUT);
$|= 1;
select( $selected ), $selected= "" unless $cmd =~ /^\|\|/;
$cmd =~ s/^\|+\s*//;
- redo PIPE; };
+ redo PIPE;
+ };
# XXX Local variants do not work!
- $cmd =~ s/^t\s/\$DB::trace = 1;\n/;
+ $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) {
$onetimeDump = undef;
- } else {
+ } elsif ($term_pid == $$) {
print $OUT "\n";
}
} continue { # CMD:
if ($piped) {
if ($pager =~ /^\|/) {
- $?= 0; close(OUT) || &warn("Can't close DB::OUT");
- &warn( "Pager `$pager' failed: ",
- ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8),
- ( $? & 128 ) ? " (core dumped)" : "",
- ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
+ $? = 0;
+ # we cannot warn here: the handle is missing --tchrist
+ close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n";
+
+ # most of the $? crud was coping with broken cshisms
+ if ($?) {
+ print SAVEOUT "Pager `$pager' failed: ";
+ if ($? == -1) {
+ print SAVEOUT "shell returned -1\n";
+ } elsif ($? >> 8) {
+ print SAVEOUT
+ ( $? & 127 ) ? " (SIG#".($?&127).")" : "",
+ ( $? & 128 ) ? " -- core dumped" : "", "\n";
+ } else {
+ print SAVEOUT "status ", ($? >> 8), "\n";
+ }
+ }
+
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
- $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
+ $SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
# Will stop ignoring SIGPIPE if done like nohup(1)
# does SIGINT but Perl doesn't give us a choice.
} else {
$piped= "";
}
} # CMD:
- map {$evalarg = $_; &eval} @$post;
+ $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF
+ foreach $evalarg (@$post) {
+ &eval;
+ }
} # if ($single || $signal)
- ($@, $!, $,, $/, $\, $^W) = @saved;
+ ($@, $!, $^E, $,, $/, $\, $^W) = @saved;
();
}
sub sub {
my ($al, $ret, @ret) = "";
- if ($sub =~ /::AUTOLOAD$/) {
- $al = " for $ {$` . '::AUTOLOAD'}";
+ if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
+ $al = " for $$sub";
}
- print $LINEINFO ' ' x $#stack, "entering $sub$al\n" if $frame;
- push(@stack, $single);
+ local $stack_depth = $stack_depth + 1; # Protect from non-local exits
+ $#stack = $stack_depth;
+ $stack[-1] = $single;
$single &= 1;
- $single |= 4 if $#stack == $deep;
+ $single |= 4 if $stack_depth == $deep;
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "),
+ # Why -1? But it works! :-(
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame;
if (wantarray) {
@ret = &$sub;
- $single |= pop(@stack);
- print ($OUT "list context return from $sub:\n"), dumpit( \@ret ),
- $doret = -2 if $doret eq $#stack;
- print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
+ $single |= $stack[$stack_depth--];
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
+ if ($doret eq $stack_depth or $frame & 16) {
+ my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
+ print $fh ' ' x $stack_depth if $frame & 16;
+ print $fh "list context return from $sub:\n";
+ dumpit($fh, \@ret );
+ $doret = -2;
+ }
@ret;
} else {
- $ret = &$sub;
- $single |= pop(@stack);
- print ($OUT "scalar context return from $sub: "), dumpit( $ret ),
- $doret = -2 if $doret eq $#stack;
- print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
+ if (defined wantarray) {
+ $ret = &$sub;
+ } else {
+ &$sub; undef $ret;
+ };
+ $single |= $stack[$stack_depth--];
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
+ if ($doret eq $stack_depth or $frame & 16 and defined wantarray) {
+ my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
+ print $fh (' ' x $stack_depth) if $frame & 16;
+ print $fh (defined wantarray
+ ? "scalar context return from $sub: "
+ : "void context return from $sub\n");
+ dumpit( $fh, $ret ) if defined wantarray;
+ $doret = -2;
+ }
$ret;
}
}
sub save {
- @saved = ($@, $!, $,, $/, $\, $^W);
+ @saved = ($@, $!, $^E, $,, $/, $\, $^W);
$, = ""; $/ = "\n"; $\ = ""; $^W = 0;
}
# The following takes its argument via $evalarg to preserve current @_
sub eval {
- my @res;
+ # 'my' would make it visible from user code
+ # but so does local! --tchrist
+ local @res;
{
- local (@stack) = @stack; # guard against recursive debugging
- my $otrace = $trace;
- my $osingle = $single;
- my $od = $^D;
+ local $otrace = $trace;
+ local $osingle = $single;
+ local $od = $^D;
+ { ($evalarg) = $evalarg =~ /(.*)/s; }
@res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
$trace = $otrace;
$single = $osingle;
$^D = $od;
}
my $at = $@;
- eval "&DB::save";
+ local $saved[0]; # Preserve the old value of $@
+ eval { &DB::save };
if ($at) {
print $OUT $at;
- } elsif ($onetimeDump) {
- dumpit(\@res);
+ } elsif ($onetimeDump eq 'dump') {
+ dumpit($OUT, \@res);
+ } elsif ($onetimeDump eq 'methods') {
+ methods($res[0]);
}
+ @res;
}
sub postponed_sub {
my $subname = shift;
- if ($postponed{$subname} =~ s/break\s([+-]?\d+)\s+if\s//) {
+ if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
my $offset = $1 || 0;
# Filename below can contain ':'
- my ($file,$i) = ($sub{$subname} =~ /^(.*):(\d+)-.*$/);
- $i += $offset;
+ my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
if ($i) {
- local *dbline = "::_<$file";
+ $i += $offset;
+ local *dbline = $main::{'_<' . $file};
local $^W = 0; # != 0 is magical below
- $had_breakpoints{$file}++;
+ $had_breakpoints{$file} |= 1;
my $max = $#dbline;
++$i until $dbline[$i] != 0 or $i >= $max;
$dbline{$i} = delete $postponed{$subname};
}
return;
}
- print $OUT "In postponed_sub for `$subname'.\n";
+ elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
+ #print $OUT "In postponed_sub for `$subname'.\n";
}
sub postponed {
+ if ($ImmediateStop) {
+ $ImmediateStop = 0;
+ $signal = 1;
+ }
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};
- return unless %{$postponed_file{$filename}};
- $had_breakpoints{$filename}++;
+ $signal = 1, print $OUT "'$filename' loaded...\n"
+ if $break_on_load{$filename};
+ print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
+ return unless $postponed_file{$filename};
+ $had_breakpoints{$filename} |= 1;
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
my $key;
for $key (keys %{$postponed_file{$filename}}) {
- $dbline{$key} = $ {$postponed_file{$filename}}{$key};
+ $dbline{$key} = ${$postponed_file{$filename}}{$key};
}
- undef %{$postponed_file{$filename}};
+ delete $postponed_file{$filename};
}
sub dumpit {
- local ($savout) = select($OUT);
+ local ($savout) = select(shift);
my $osingle = $single;
my $otrace = $trace;
$single = $trace = 0;
select ($savout);
}
+# Tied method do not create a context, so may get wrong message:
+
sub print_trace {
my $fh = shift;
- my @sub = dump_trace(@_);
+ my @sub = dump_trace($_[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} })"
: '' ;
- $file = $sub[$i]{file} eq '-e' ? $sub[$i]{file} :
- "file `$sub[$i]{file}'";
- print $fh "$sub[$i]{context}$sub[$i]{sub}$args" .
- " called from $file" .
- " line $sub[$i]{line}\n";
+ $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 = $skip;
- ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
+ $i < $count and ($p,$file,$line,$sub,$h,$context,$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, $_);
+ 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 = $context ? '@ = ' : '$ = ';
+ $context = $context ? '@' : (defined $context ? "\$" : '.');
$args = $h ? [@a] : undef;
$e =~ s/\n\s*\;\s*\Z// if $e;
- $e =~ s/[\\\']/\\$1/g if $e;
+ $e =~ s/([\\\'])/\\$1/g if $e;
if ($r) {
$sub = "require '$e'";
} elsif (defined $r) {
file => $file, line => $line});
last if $signal;
}
+ $trace = $otrace;
@sub;
}
$action;
}
+sub unbalanced {
+ # i hate using globals!
+ $balanced_brace_re ||= qr{
+ ^ \{
+ (?:
+ (?> [^{}] + ) # Non-parens without backtracking
+ |
+ (??{ $balanced_brace_re }) # Group with matching parens
+ ) *
+ \} $
+ }x;
+ return $_[0] !~ m/$balanced_brace_re/;
+}
+
sub gets {
- local($.);
- #<IN>;
&readline("cont: ");
}
sub system {
# We save, change, then restore STDIN and STDOUT to avoid fork() since
- # many non-Unix systems can do system() but have problems with fork().
+ # some non-Unix systems can do system() but have problems with fork().
open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN");
- open(SAVEOUT,">&OUT") || &warn("Can't save STDOUT");
+ open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
open(STDIN,"<&IN") || &warn("Can't redirect STDIN");
open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
+
+ # XXX: using csh or tcsh destroys sigint retvals!
system(@_);
open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN");
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
- close(SAVEIN); close(SAVEOUT);
- &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")",
- ( $? & 128 ) ? " (core dumped)" : "",
- ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
- $?;
+ close(SAVEIN);
+ close(SAVEOUT);
+
+
+ # most of the $? crud was coping with broken cshisms
+ if ($? >> 8) {
+ &warn("(Command exited ", ($? >> 8), ")\n");
+ } elsif ($?) {
+ &warn( "(Command died of SIG#", ($? & 127),
+ (($? & 128) ? " -- core dumped" : "") , ")", "\n");
+ }
+
+ return $?;
+
}
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) {
$| = 1;
select($sel);
} else {
- eval "require Term::Rendezvous;" or die $@;
+ eval "require Term::Rendezvous;" or die;
my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
my $term_rv = new Term::Rendezvous $rv;
$IN = $term_rv->IN;
} else {
$term = new Term::ReadLine 'perldb', $IN, $OUT;
- $readline::rl_basic_word_break_characters .= "[:"
- if defined $readline::rl_basic_word_break_characters
- and index($readline::rl_basic_word_break_characters, ":") == -1;
- $readline::rl_special_prefixes =
- $readline::rl_special_prefixes = '$@&%';
- $readline::rl_completer_word_break_characters =
- $readline::rl_completer_word_break_characters . '$@&%';
- $readline::rl_completion_function =
- $readline::rl_completion_function = \&db_complete;
+ $rl_attribs = $term->Attribs;
+ $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
+ if defined $rl_attribs->{basic_word_break_characters}
+ and index($rl_attribs->{basic_word_break_characters}, ":") == -1;
+ $rl_attribs->{special_prefixes} = '$@&%';
+ $rl_attribs->{completer_word_break_characters} .= '$@&%';
+ $rl_attribs->{completion_function} = \&db_complete;
}
$LINEINFO = $OUT unless defined $LINEINFO;
$lineinfo = $console unless defined $lineinfo;
if ($term->Features->{setHistory} and "@hist" ne "?") {
$term->SetHistory(@hist);
}
+ ornaments($ornaments) if defined $ornaments;
+ $term_pid = $$;
+}
+
+sub resetterm { # We forked, so we need a different TTY
+ $term_pid = $$;
+ if (defined &get_fork_TTY) {
+ &get_fork_TTY;
+ } elsif (not defined $fork_TTY
+ and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
+ and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) {
+ # Possibly _inside_ XTERM
+ open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\
+ sleep 10000000' |];
+ $fork_TTY = <XT>;
+ chomp $fork_TTY;
+ }
+ if (defined $fork_TTY) {
+ TTY($fork_TTY);
+ undef $fork_TTY;
+ } else {
+ print_help(<<EOP);
+I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
+ Define B<\$DB::fork_TTY>
+ - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
+ The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
+ On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
+ by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
+EOP
+ }
}
sub readline {
+ local $.;
if (@typeahead) {
my $left = @typeahead;
my $got = shift @typeahead;
}
local $frame = 0;
local $doret = -2;
- $term->readline(@_);
+ if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) {
+ $OUT->write(join('', @_));
+ my $stuff;
+ $IN->recv( $stuff, 2048 ); # XXX: what's wrong with sysread?
+ $stuff;
+ }
+ else {
+ $term->readline(@_);
+ }
}
sub dump_option {
my ($opt, $default)= @_;
my $val;
if (defined $optionVars{$opt}
- and defined $ {$optionVars{$opt}}) {
- $val = $ {$optionVars{$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}}) {
+ and not defined ${$optionVars{$opt}}) {
$val = $default;
} else {
$val = $option{$opt};
sub parse_options {
local($_)= @_;
- while ($_ ne "") {
- s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last;
+ # too dangerous to let intuitive usage overwrite important things
+ # defaultion should never be the default
+ my %opt_needs_val = map { ( $_ => 1 ) } qw{
+ arrayDepth hashDepth LineInfo maxTraceLen ornaments
+ pager quote ReadLine recallCommand RemotePort ShellBang TTY
+ };
+ while (length) {
+ my $val_defaulted;
+ s/^\s+// && next;
+ s/^(\w+)(\W?)// or print($OUT "Invalid option `$_'\n"), last;
my ($opt,$sep) = ($1,$2);
my $val;
if ("?" eq $sep) {
if /^\S/;
#&dump_option($opt);
} elsif ($sep !~ /\S/) {
- $val = "1";
+ $val_defaulted = 1;
+ $val = "1"; # this is an evil default; make 'em set it!
} elsif ($sep eq "=") {
- s/^(\S*)($|\s+)//;
+
+ if (s/ (["']) ( (?: \\. | (?! \1 ) [^\\] )* ) \1 //x) {
+ my $quote = $1;
+ ($val = $2) =~ s/\\([$quote\\])/$1/g;
+ } else {
+ s/^(\S*)//;
$val = $1;
+ print OUT qq(Option better cleared using $opt=""\n)
+ unless length $val;
+ }
+
} else { #{ to "let some poor schmuck bounce on the % key in B<vi>."
my ($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])/$1/g;
+ ($val = $1) =~ s/\\([\\$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+//;
+
+ my $option;
+ my $matches = grep( /^\Q$opt/ && ($option = $_), @options )
+ || grep( /^\Q$opt/i && ($option = $_), @options );
+
+ print($OUT "Unknown option `$opt'\n"), next unless $matches;
+ print($OUT "Ambiguous option `$opt'\n"), next if $matches > 1;
+
+ if ($opt_needs_val{$option} && $val_defaulted) {
+ print $OUT "Option `$opt' is non-boolean. Use `O $option=VAL' to set, `O $option?' to query\n";
+ next;
+ }
+
+ $option{$option} = $val if defined $val;
+
+ eval qq{
+ local \$frame = 0;
+ local \$doret = -2;
+ require '$optionRequire{$option}';
+ 1;
+ } || die # XXX: shouldn't happen
+ if defined $optionRequire{$option} &&
+ defined $val;
+
+ ${$optionVars{$option}} = $val
+ if defined $optionVars{$option} &&
+ defined $val;
+
+ &{$optionAction{$option}} ($val)
+ if defined $optionAction{$option} &&
+ defined &{$optionAction{$option}} &&
+ defined $val;
+
+ # Not $rcfile
+ dump_option($option) unless $OUT eq \*STDERR;
}
}
sub set_list {
my ($stem,@list) = @_;
my $val;
- $ENV{"$ {stem}_n"} = @list;
+ $ENV{"${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;
+ $ENV{"${stem}_$i"} = $val;
}
}
sub get_list {
my $stem = shift;
my @list;
- my $n = delete $ENV{"$ {stem}_n"};
+ my $n = delete $ENV{"${stem}_n"};
my $val;
for $i (0 .. $n - 1) {
- $val = delete $ENV{"$ {stem}_$i"};
+ $val = delete $ENV{"${stem}_$i"};
$val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge;
push @list, $val;
}
}
sub TTY {
- if ($term) {
- &warn("Too late to set TTY!\n") if @_;
- } else {
- $tty = shift if @_;
- }
+ if (@_ and $term and $term->Features->{newTTY}) {
+ my ($in, $out) = shift;
+ if ($in =~ /,/) {
+ ($in, $out) = split /,/, $in, 2;
+ } else {
+ $out = $in;
+ }
+ open IN, $in or die "cannot open `$in' for read: $!";
+ open OUT, ">$out" or die "cannot open `$out' for write: $!";
+ $term->newTTY(\*IN, \*OUT);
+ $IN = \*IN;
+ $OUT = \*OUT;
+ return $tty = $in;
+ } elsif ($term and @_) {
+ &warn("Too late to set TTY, enabled on next `R'!\n");
+ }
+ $tty = shift if @_;
$tty or $console;
}
sub noTTY {
if ($term) {
- &warn("Too late to set noTTY!\n") if @_;
- } else {
- $notty = shift if @_;
+ &warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
}
+ $notty = shift if @_;
$notty;
}
sub ReadLine {
if ($term) {
- &warn("Too late to set ReadLine!\n") if @_;
- } else {
- $rl = shift if @_;
+ &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
}
+ $rl = shift if @_;
$rl;
}
-sub NonStop {
+sub RemotePort {
if ($term) {
- &warn("Too late to set up NonStop mode!\n") if @_;
+ &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_;
+ }
+ $remoteport = shift if @_;
+ $remoteport;
+}
+
+sub tkRunning {
+ if (${$term->Features}{tkRunning}) {
+ return $term->tkRunning(@_);
} else {
- $runnonstop = shift if @_;
+ print $OUT "tkRunning not supported by current ReadLine package.\n";
+ 0;
+ }
+}
+
+sub NonStop {
+ if ($term) {
+ &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_;
}
+ $runnonstop = shift if @_;
$runnonstop;
}
$psh;
}
+sub ornaments {
+ if (defined $term) {
+ local ($warnLevel,$dieLevel) = (0, 1);
+ return '' unless $term->Features->{ornaments};
+ eval { $term->ornaments(@_) } || '';
+ } else {
+ $ornaments = shift;
+ }
+}
+
sub recallCommand {
if (@_) {
$rc = quotemeta shift;
return $lineinfo unless @_;
$lineinfo = shift;
my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo";
- $emacs = ($stream =~ /^\|/);
+ $slave_editor = ($stream =~ /^\|/);
open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write");
$LINEINFO = \*LINEINFO;
my $save = select($LINEINFO);
s,/,::,g ;
s/^perl5db$/DB/;
s/^Term::ReadLine::readline$/readline/;
- if (defined $ { $_ . '::VERSION' }) {
- $version{$file} = "$ { $_ . '::VERSION' } from ";
+ 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 $OUT "dumpvar.pl not available.\n";
- }
+ dumpit($OUT,\%version);
}
sub sethelp {
+ # XXX: make sure these are tabs between the command and explantion,
+ # or print_help will screw up your formatting if you have
+ # eeevil ornaments enabled. This is an insane mess.
+
$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
+B<T> Stack trace.
+B<s> [I<expr>] Single step [in I<expr>].
+B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>].
+<B<CR>> Repeat last B<n> or B<s> command.
+B<r> Return from current subroutine.
+B<c> [I<line>|I<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.
-/pattern/ Search forwards for pattern; final / is optional.
-?pattern? Search backwards for pattern; final ? is optional.
-L List all breakpoints and actions for the current file.
-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]
+B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>.
+B<l> I<min>B<->I<max> List lines I<min> through I<max>.
+B<l> I<line> List single I<line>.
+B<l> I<subname> List first window of lines from subroutine.
+B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>.
+B<l> List next window of lines.
+B<-> List previous window of lines.
+B<w> [I<line>] List window around I<line>.
+B<.> Return to the executed line.
+B<f> I<filename> Switch to viewing I<filename>. File must be already loaded.
+ I<filename> may be either the full name of the file, or a regular
+ expression matching the full file name:
+ B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file.
+ Evals (with saved bodies) are considered to be filenames:
+ B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval
+ (in the order of execution).
+B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional.
+B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional.
+B<L> List all breakpoints and actions.
+B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>.
+B<t> Toggle trace mode.
+B<t> I<expr> Trace through execution of I<expr>.
+B<b> [I<line>] [I<condition>]
+ Set breakpoint; I<line> defaults to the current execution line;
+ I<condition> breaks if it evaluates to true, defaults to '1'.
+B<b> I<subname> [I<condition>]
Set breakpoint at first line of subroutine.
-b load filename Set breakpoint on `require'ing the given file.
-b postpone subname [condition]
+B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>.
+B<b> B<load> I<filename> Set breakpoint on `require'ing the given file.
+B<b> B<postpone> I<subname> [I<condition>]
Set breakpoint at first line of subroutine after
it 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.
-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 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)"
+B<b> B<compile> I<subname>
+ Stop after the subroutine is compiled.
+B<d> [I<line>] Delete the breakpoint for I<line>.
+B<D> Delete all breakpoints.
+B<a> [I<line>] I<command>
+ Set an action to be done before the I<line> is executed;
+ I<line> defaults to the current execution line.
+ Sequence is: check for breakpoint/watchpoint, print line
+ if necessary, do action, prompt user if necessary,
+ execute line.
+B<a> [I<line>] Delete the action for I<line>.
+B<A> Delete all actions.
+B<W> I<expr> Add a global watch-expression.
+B<W> Delete all watch-expressions.
+B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current).
+ Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps.
+B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\".
+B<x> I<expr> Evals expression in list context, dumps the result.
+B<m> I<expr> Evals expression in list context, prints methods callable
+ on the first element of the result.
+B<m> I<class> Prints methods callable via the given class.
+
+B<<> ? List Perl commands to run before each prompt.
+B<<> I<expr> Define Perl command to run before each prompt.
+B<<<> I<expr> Add to the list of Perl commands to run before each prompt.
+B<>> ? List Perl commands to run after each prompt.
+B<>> I<expr> Define Perl command to run after each prompt.
+B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt.
+B<{> I<db_command> Define debugger command to run before each prompt.
+B<{> ? List debugger commands to run before each prompt.
+B<<> I<expr> Define Perl command to run before each prompt.
+B<{{> I<db_command> Add to the list of debugger commands to run before each prompt.
+B<$prc> I<number> Redo a previous command (default previous command).
+B<$prc> I<-number> Redo number'th-to-last command.
+B<$prc> I<pattern> Redo last command that started with I<pattern>.
+ See 'B<O> I<recallCommand>' too.
+B<$psh$psh> I<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
+B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
+ See 'B<O> I<shellBang>' too.
+B<H> I<-number> Display last number commands (default all).
+B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package.
+B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager.
+B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well.
+B<\=> [I<alias> I<value>] Define a command alias, or list current aliases.
+I<command> Execute as a perl statement in current package.
+B<v> Show versions of loaded modules.
+B<R> Pure-man-restart of debugger, some of debugger state
and command-line options may be lost.
-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.
+ Currently the following setting are preserved:
+ history, breakpoints and actions, debugger B<O>ptions
+ and the following command-line options: I<-w>, I<-I>, I<-e>.
+
+B<O> [I<opt>] ... Set boolean option to true
+B<O> [I<opt>B<?>] Query options
+B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ...
+ Set options. Use quotes in spaces in value.
+ I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell;
+ I<pager> program for output of \"|cmd\";
+ I<tkRunning> run Tk while prompting (with ReadLine);
+ I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity;
+ I<inhibit_exit> Allows stepping off the end of the script.
+ I<ImmediateStop> Debugger should stop as early as possible.
+ I<RemotePort> Remote hostname:port for remote debugging
+ The following options affect what happens with B<V>, B<X>, and B<x> commands:
+ I<arrayDepth>, I<hashDepth> print only first N elements ('' for all);
+ I<compactDump>, I<veryCompact> change style of array and hash dump;
+ I<globPrint> whether to print contents of globs;
+ I<DumpDBFiles> dump arrays holding debugged files;
+ I<DumpPackages> dump symbol tables of packages;
+ I<DumpReused> dump contents of \"reused\" addresses;
+ I<quote>, I<HighBit>, I<undefPrint> change style of string dump;
+ I<bareStringify> Do not print the overload-stringified value;
+ Other options include:
+ I<PrintRet> affects printing of return value after B<r> command,
+ I<frame> affects printing messages on entry and exit from subroutines.
+ I<AutoTrace> affects printing messages on every possible breaking point.
+ I<maxTraceLen> gives maximal length of evals/args listed in stack trace.
+ I<ornaments> affects screen appearance of the command line.
+ During startup options are initialized from \$ENV{PERLDB_OPTS}.
+ You can put additional initialization options I<TTY>, I<noTTY>,
+ I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
+ `B<R>' after you set them).
+
+B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction.
+B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page.
+B<h h> Summary of debugger commands.
+B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the
+ named Perl I<manpage>, or on B<$doccmd> itself if omitted.
+ Set B<\$DB::doccmd> to change viewer.
+
+Type `|h' for a paged display if this was too hard to read.
+
+"; # Fix balance of vi % matching: } }}
-";
$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 expr Evals expression in array context, dumps the result.
- 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]\".
+I<List/search source lines:> I<Control script execution:>
+ B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
+ B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr]
+ B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
+ B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
+ B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
+ B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
+I<Debugger controls:> B<L> List break/watch/actions
+ B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
+ B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
+ B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints
+ B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line
+ B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
+ B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
+ B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
+ B<q> or B<^D> Quit B<R> Attempt a restart
+I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
+ B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods.
+ B<p> I<expr> Print expression (uses script's current package).
+ B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
+ B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
+ B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
+For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs.
END_SUM
- # ')}}; # Fix balance of Emacs parsing
+ # ')}}; # Fix balance of vi % matching
+}
+
+sub print_help {
+ local $_ = shift;
+
+ # Restore proper alignment destroyed by eeevil I<> and B<>
+ # ornaments: A pox on both their houses!
+ #
+ # A help command will have everything up to and including
+ # the first tab sequence paddeed into a field 16 (or if indented 20)
+ # wide. If it's wide than that, an extra space will be added.
+ s{
+ ^ # only matters at start of line
+ ( \040{4} | \t )* # some subcommands are indented
+ ( < ? # so <CR> works
+ [BI] < [^\t\n] + ) # find an eeevil ornament
+ ( \t+ ) # original separation, discarded
+ ( .* ) # this will now start (no earlier) than
+ # column 16
+ } {
+ my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4);
+ my $clean = $command;
+ $clean =~ s/[BI]<([^>]*)>/$1/g;
+ # replace with this whole string:
+ (length($leadwhite) ? " " x 4 : "")
+ . $command
+ . ((" " x (16 + (length($leadwhite) ? 4 : 0) - length($clean))) || " ")
+ . $text;
+
+ }mgex;
+
+ s{ # handle bold ornaments
+ B < ( [^>] + | > ) >
+ } {
+ $Term::ReadLine::TermCap::rl_term_set[2]
+ . $1
+ . $Term::ReadLine::TermCap::rl_term_set[3]
+ }gex;
+
+ s{ # handle italic ornaments
+ I < ( [^>] + | > ) >
+ } {
+ $Term::ReadLine::TermCap::rl_term_set[0]
+ . $1
+ . $Term::ReadLine::TermCap::rl_term_set[1]
+ }gex;
+
+ print $OUT $_;
+}
+
+sub fix_less {
+ return if defined $ENV{LESS} && $ENV{LESS} =~ /r/;
+ my $is_less = $pager =~ /\bless\b/;
+ if ($pager =~ /\bmore\b/) {
+ my @st_more = stat('/usr/bin/more');
+ my @st_less = stat('/usr/bin/less');
+ $is_less = @st_more && @st_less
+ && $st_more[0] == $st_less[0]
+ && $st_more[1] == $st_less[1];
+ }
+ # changes environment!
+ $ENV{LESS} .= 'r' if $is_less;
}
sub diesignal {
local $doret = -2;
$SIG{'ABRT'} = 'DEFAULT';
kill 'ABRT', $$ if $panic++;
- print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue
- local $SIG{__WARN__} = '';
- require Carp;
- local $Carp::CarpLevel = 2; # mydie + confess
- &warn(Carp::longmess("Signal @_"));
+ if (defined &Carp::longmess) {
+ local $SIG{__WARN__} = '';
+ local $Carp::CarpLevel = 2; # mydie + confess
+ &warn(Carp::longmess("Signal @_"));
+ }
+ else {
+ print $DB::OUT "Got signal @_\n";
+ }
kill 'ABRT', $$;
}
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");
+ eval { require Carp } if defined $^S; # If error/warning during compilation,
+ # require may be broken.
+ warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
+ return unless defined &Carp::longmess;
my ($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 $sub eq '(eval)';
- }
- {
+ if ($dieLevel > 2) {
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 $dieLevel < 2;
+ &warn(@_); # Yell no matter what
+ return;
+ }
+ if ($dieLevel < 2) {
+ die @_ if $^S; # in eval propagate
}
- eval { require Carp }; # If error/warning during compilation,
- # require may be broken.
- die(@_, "\nUnrecoverable error") unless defined &Carp::longmess;
+ eval { require Carp } if defined $^S; # If error/warning during compilation,
+ # require may be broken.
+
+ die(@_, "\nCannot print stack trace, load with -MCarp option to see stack")
+ unless defined &Carp::longmess;
+
# We do not want to debug this chunk (automatic disabling works
# inside DB::DB, but not in Carp).
my ($mysingle,$mytrace) = ($single,$trace);
$single = 0; $trace = 0;
my $mess = Carp::longmess(@_);
($single,$trace) = ($mysingle,$mytrace);
- #&warn("dieing loudly in dbdie\n");
die $mess;
}
$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";
+ ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
+ if $I_m_init;
print $OUT "Dump printed too.\n" if $dieLevel > 2;
} else {
$SIG{__DIE__} = $prevdie;
$signalLevel;
}
+sub CvGV_name {
+ my $in = shift;
+ my $name = CvGV_name_or_bust($in);
+ defined $name ? $name : $in;
+}
+
+sub CvGV_name_or_bust {
+ my $in = shift;
+ return if $skipCvGV; # Backdoor to avoid problems if XS broken...
+ $in = \&$in; # Hard reference...
+ eval {require Devel::Peek; 1} or return;
+ my $gv = Devel::Peek::CvGV($in) or return;
+ *$gv{PACKAGE} . '::' . *$gv{NAME};
+}
+
+sub find_sub {
+ my $subr = shift;
+ $sub{$subr} or do {
+ return unless defined &$subr;
+ my $name = CvGV_name_or_bust($subr);
+ my $data;
+ $data = $sub{$name} if defined $name;
+ return $data if defined $data;
+
+ # Old stupid way...
+ $subr = \&$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);
+ }
+}
+
+sub setman {
+ $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s
+ ? "man" # O Happy Day!
+ : "perldoc"; # Alas, poor unfortunates
+}
+
+sub runman {
+ my $page = shift;
+ unless ($page) {
+ &system("$doccmd $doccmd");
+ return;
+ }
+ # this way user can override, like with $doccmd="man -Mwhatever"
+ # or even just "man " to disable the path check.
+ unless ($doccmd eq 'man') {
+ &system("$doccmd $page");
+ return;
+ }
+
+ $page = 'perl' if lc($page) eq 'help';
+
+ require Config;
+ my $man1dir = $Config::Config{'man1dir'};
+ my $man3dir = $Config::Config{'man3dir'};
+ for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ }
+ my $manpath = '';
+ $manpath .= "$man1dir:" if $man1dir =~ /\S/;
+ $manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir;
+ chop $manpath if $manpath;
+ # harmless if missing, I figure
+ my $oldpath = $ENV{MANPATH};
+ $ENV{MANPATH} = $manpath if $manpath;
+ my $nopathopt = $^O =~ /dunno what goes here/;
+ if (system($doccmd,
+ # I just *know* there are men without -M
+ (($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
+ split ' ', $page) )
+ {
+ unless ($page =~ /^perl\w/) {
+ if (grep { $page eq $_ } qw{
+ 5004delta 5005delta amiga api apio book boot bot call compile
+ cygwin data dbmfilter debug debguts delta diag doc dos dsc embed
+ faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork
+ form func guts hack hist hpux intern ipc lexwarn locale lol mod
+ modinstall modlib number obj op opentut os2 os390 pod port
+ ref reftut run sec style sub syn thrtut tie toc todo toot tootc
+ trap unicode var vms win32 xs xstut
+ })
+ {
+ $page =~ s/^/perl/;
+ system($doccmd,
+ (($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
+ $page);
+ }
+ }
+ }
+ if (defined $oldpath) {
+ $ENV{MANPATH} = $manpath;
+ } else {
+ delete $ENV{MANPATH};
+ }
+}
+
# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
BEGIN { # This does not compile, alas.
# @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);
+ $stack_depth = 0; # Localized $#stack
$doret = -2;
$frame = 0;
}
#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, $prefix, $pack) = $text;
+ my ($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;
$prefix = "&";
- return map "$prefix$_", grep /^\Q$text/, keys %sub;
+ 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) . '::';
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
return db_complete($out[0], $line, $start);
}
- return @out;
+ return sort @out;
}
if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
$pack = ($package eq 'main' ? '' : $package) . '::';
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
return db_complete($out[0], $line, $start);
}
- return @out;
+ return sort @out;
}
- return grep /^\Q$text/, (keys %sub), qw(postpone load) # subroutines
- if (substr $line, 0, $start) =~ /^[bl]\s+(postpone\s+)?$/;
- return grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # packages
- if (substr $line, 0, $start) =~ /^V\s+$/;
- if ((substr $line, 0, $start) =~ /^O\b.*\s$/) { # Options after a space
+ 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 = '? ';
$out = "=$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 @out;
+ $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
+ return sort @out;
}
- return &readline::rl_filename_list($text); # filenames
+ return $term->filename_list($text); # filenames
}
-sub end_report { print $OUT "Use `q' to quit and `R' to restart. `h q' for details.\n" }
+sub end_report {
+ print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
+}
END {
- $finished = $inhibit_exit; # So that some keys may be disabled.
- $DB::single = !$exiting; # Do not trace destructors on exit
- DB::fake::at_exit() unless $exiting;
+ $finished = 1 if $inhibit_exit; # So that some keys may be disabled.
+ $fall_off_end = 1 unless $inhibit_exit;
+ # Do not stop in at_exit() and destructors on exit:
+ $DB::single = !$fall_off_end && !$runnonstop;
+ DB::fake::at_exit() unless $fall_off_end or $runnonstop;
}
package DB::fake;
sub at_exit {
- "Debuggee terminated. Use `q' to quit and `R' to restart.";
+ "Debugged program terminated. Use `q' to quit or `R' to restart.";
}
+package DB; # Do not trace this 1; below!
+
1;