# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 1.04;
+$VERSION = 1.07;
$header = "perl5db.pl version $VERSION";
-# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
-# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
-
-# modified Perl debugger, to be run from Emacs in perldb-mode
-# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
-# Johan Vromans -- upgrade to 4.0 pl 10
-# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
-
#
# This file is automatically included if you do perl -d.
# It's probably not useful to include this yourself.
# interpreter, though the values used by perl5db.pl have the form
# "$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 of the package DB). In fact the same is
# 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
# `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.
####################################################################
TTY noTTY ReadLine NonStop LineInfo maxTraceLen
recallCommand ShellBang pager tkRunning ornaments
signalLevel warnLevel dieLevel inhibit_exit
- ImmediateStop bareStringify);
+ ImmediateStop bareStringify
+ RemotePort);
%optionVars = (
hashDepth => \$dumpvar::hashDepth,
inhibit_exit => \$inhibit_exit,
maxTraceLen => \$maxtrace,
ImmediateStop => \$ImmediateStop,
+ RemotePort => \$remoteport,
);
%optionAction = (
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};
# $restart = 1;
if ($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") {
$console = "/dev/tty";
} elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
$console = "con";
$console = "sys\$command";
}
- if (($^O eq 'MSWin32') and ($emacs or defined $ENV{EMACS})) {
+ if (($^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 "Could not create socket to connect to remote host."; }
+ $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";
}
}
# _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 <= $#stack; ) {
+ for ($i=0; $i <= $stack_depth; ) {
$stack[$i++] &= ~1;
}
$single = 0;
if ($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]) {
$was_signal = $signal;
$signal = 0;
if ($single || ($trace & 1) || $was_signal) {
- $term || &setterm;
- if ($emacs) {
+ 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';
- $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
+ $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
"package $package;"; # this won't let them modify, alas
} else {
$sub =~ s/\'/::/;
$position = "$prefix$line$infix$dbline[$line]$after";
}
if ($frame) {
- print $LINEINFO ' ' x $#stack, "$line:\t$dbline[$line]$after";
+ print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after";
} else {
print $LINEINFO $position;
}
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
$position .= $incr_pos;
if ($frame) {
- print $LINEINFO ' ' x $#stack, "$i:\t$dbline[$i]$after";
+ print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
} else {
print $LINEINFO $incr_pos;
}
foreach $evalarg (@$pre) {
&eval;
}
- print $OUT $#stack . " levels deep in subroutine calls!\n"
+ print $OUT $stack_depth . " levels deep in subroutine calls!\n"
if $single & 4;
$start = $line;
$incr = -1; # for backward motion.
- @typeahead = @$pretype, @typeahead;
+ @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 {
$cmd =~ /^$/ && ($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;
+ }
+ }
$cmd =~ /^q$/ && ($exiting = 1) && exit 0;
$cmd =~ /^h$/ && do {
print_help($help);
$cmd =~ /^h\s+h$/ && do {
print_help($summary);
next CMD; };
- $cmd =~ /^h\s+(\S)$/ && do {
- my $asked = "\Q$1";
- if ($help =~ /^(?:[IB]<)$asked/m) {
- while ($help =~ /^((?:[IB]<)$asked([\s\S]*?)\n)(?!\s)/mg) {
+ # 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 {
}
next CMD; };
$cmd =~ /^t$/ && do {
- ($trace & 1) ? ($trace &= ~1) : ($trace |= 1);
+ $trace ^= 1;
print $OUT "Trace = " .
(($trace & 1) ? "on" : "off" ) . "\n";
next CMD; };
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";
}
}
};
$cmd =~ s/^l\s+-\s*$/-/;
- $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
+ $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 = $package."::".$subname
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
- @pieces = split(/:/,find_sub($subname));
+ @pieces = split(/:/,find_sub($subname) || $sub{$subname});
$subrange = pop @pieces;
$file = join(':', @pieces);
if ($file ne $filename) {
+ print $OUT "Switching to file '$file'.\n"
+ unless $slave_editor;
*dbline = $main::{'_<' . $file};
$max = $#dbline;
$filename = $file;
$i = $line if $i eq '.';
$i = 1 if $i < 1;
$incr = $end - $i;
- if ($emacs) {
+ if ($slave_editor) {
print $OUT "\032\032$filename:$i:0\n";
$i = $end;
} else {
$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;
}
}
}
+
+ 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 $file;
for ($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"
$break_on_load{$::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|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
- my $cond = $3 || '1';
+ my $cond = length $3 ? $3 : '1';
my ($subname, $break) = ($2, $1 eq 'postpone');
- $subname =~ s/\'/::/;
+ $subname =~ s/\'/::/g;
$subname = "${'package'}::" . $subname
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
$postponed{$subname} = $break
? "break +0 if $cond" : "compile";
next CMD; };
- $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ $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($subname,0,2) eq "::";
($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
$i += 0;
if ($i) {
- $filename = $file;
- *dbline = $main::{'_<' . $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 = defined $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 = $main::{'_<' . $file};
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 {
$cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
end_report(), next CMD if $finished and $level <= 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
$subname = $package."::".$subname
unless $subname =~ /::/;
if ($i) {
$filename = $file;
*dbline = $main::{'_<' . $filename};
- $had_breakpoints{$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', $cl;
}
} else {
set_list("PERLDB_POST", @$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 {
$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 $OUT "$@";
$start = 1 if ($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;
$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);
+ $i = $1 ? ($#hist-($2||1)) : ($2||$#hist);
$cmd = $hist[$i];
- print $OUT $cmd;
+ print $OUT $cmd, "\n";
redo CMD; };
$cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
&system($1);
next CMD;
}
$cmd = $hist[$i];
- print $OUT $cmd;
+ 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/;
$cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
} 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 $SIG{PIPE} eq \&DB::catch;
# Will stop ignoring SIGPIPE if done like nohup(1)
# does SIGINT but Perl doesn't give us a choice.
} else {
if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
$al = " for $$sub";
}
- 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 - 1), "in "),
+ ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "),
# Why -1? But it works! :-(
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x ($#stack - 1), "entering $sub$al\n") if $frame;
+ : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame;
if (wantarray) {
@ret = &$sub;
- $single |= pop(@stack);
+ $single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
- if ($doret eq $#stack or $frame & 16) {
- my $fh = ($doret eq $#stack ? $OUT : $LINEINFO);
- print $fh ' ' x $#stack if $frame & 16;
+ : 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;
} else {
&$sub; undef $ret;
};
- $single |= pop(@stack);
+ $single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
- if ($doret eq $#stack or $frame & 16 and defined wantarray) {
- my $fh = ($doret eq $#stack ? $OUT : $LINEINFO);
- print $fh (' ' x $#stack) if $frame & 16;
+ : 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");
# 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;
$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};
$filename =~ s/^_<//;
$signal = 1, print $OUT "'$filename' loaded...\n"
if $break_on_load{$filename};
- print $LINEINFO ' ' x $#stack, "Package $filename.\n" if $frame;
+ print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
return unless $postponed_file{$filename};
- $had_breakpoints{$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};
}
delete $postponed_file{$filename};
}
$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,">&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;
}
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;
}
$rl;
}
+sub RemotePort {
+ if ($term) {
+ &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_;
+ }
+ $remoteport = shift if @_;
+ $remoteport;
+}
+
sub tkRunning {
- if ($ {$term->Features}{tkRunning}) {
+ if (${$term->Features}{tkRunning}) {
return $term->tkRunning(@_);
} else {
print $OUT "tkRunning not supported by current ReadLine package.\n";
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 = "
B<T> Stack trace.
B<s> [I<expr>] Single step [in I<expr>].
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>. Must be loaded.
+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.
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<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
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.
+ 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 expression.
+ 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 array context, dumps the result.
-B<m> I<expr> Evals expression in array context, prints methods callable
+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<O> [I<opt>[B<=>I<val>]] [I<opt>B<\">I<val>B<\">] [I<opt>B<?>]...
- Set or query values of options. I<val> defaults to 1. I<opt> can
- be abbreviated. Several options can be listed.
- 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.
- 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;
- Option 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>, and I<NonStop> there (or use `B<R>' after you set them).
+
+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<>>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.
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<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction.
+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: } }}
-";
$summary = <<"END_SUM";
I<List/search source lines:> I<Control script execution:>
B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr]
B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
- B<f> I<filename> View source in file <B<CR>> Repeat last B<n> or B<s>
+ B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
I<Debugger controls:> B<L> List break/watch/actions
B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
- B<<>[B<<>] or B<{>[B<{>] [I<cmd>] Do before prompt B<b> [I<ln>|I<event>] [I<cnd>] Set breakpoint
- B<>>[B<>>] [I<cmd>] Do after prompt B<b> I<sub> [I<cnd>] Set breakpoint for sub
+ B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
B<$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<dbcmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
+ 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 array context, dumps the result or lists methods.
+ 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 {
- my $message = shift;
- if (@Term::ReadLine::TermCap::rl_term_set) {
- $message =~ s/B<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[2]$1$Term::ReadLine::TermCap::rl_term_set[3]/g;
- $message =~ s/I<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[0]$1$Term::ReadLine::TermCap::rl_term_set[1]/g;
- }
- print $OUT $message;
+ 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 {
}
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);
$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 $subr = shift;
- return unless defined &$subr;
$sub{$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) {
my $prefix = shift;
my $prepend = $prefix ? "via $prefix: " : '';
my $name;
- for $name (grep {defined &{$ {"$ {class}::"}{$_}}}
- sort keys %{"$ {class}::"}) {
+ 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"}) {
+ 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;
}
# Specific code for b c l V m f O, &blah, $blah, @blah, %blah
my($text, $line, $start) = @_;
my ($itext, $search, $prefix, $pack) =
- ($text, "^\Q$ {'package'}::\E([^:]+)\$");
+ ($text, "^\Q${'package'}::\E([^:]+)\$");
return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
(map { /$search/ ? ($1) : () } keys %sub)
https://perl5.git.perl.org / perl5.git / blobdiff