# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 1.0403;
+$VERSION = 1.14;
$header = "perl5db.pl version $VERSION";
-# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
-# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
-
-# modified Perl debugger, to be run from Emacs in perldb-mode
-# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
-# Johan Vromans -- upgrade to 4.0 pl 10
-# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
-
#
# This file is automatically included if you do perl -d.
# It's probably not useful to include this yourself.
# if caller() is called from the package DB, it provides some
# additional data.
#
-# The array @{$main::{'_<'.$filename} is the line-by-line contents of
+# The array @{$main::{'_<'.$filename}} is the line-by-line contents of
# $filename.
#
# The hash %{'_<'.$filename} contains breakpoints and action (it is
# 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)
+
+# 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
# Some additional words on internal work of debugger.
# `b load filename' implemented.
# `b postpone subr' implemented.
-# now only `q' exits debugger (overwriteable on $inhibit_exit).
+# now only `q' exits debugger (overwritable on $inhibit_exit).
# When restarting debugger breakpoints/actions persist.
# Buglet: When restarting debugger only one breakpoint/action per
# autoloaded function persists.
# 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 `-'.
+# 'l -' is a synonym for `-'.
# Cosmetic bugs in printing stack trace.
# `frame' & 8 to print "expanded args" in stack trace.
# Can list/break in imported subs.
# `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 minimal 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 restructuring. 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 weren'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.
+#
+# Changes: 1.08: Apr 25, 2001 Jon Eveland <jweveland@yahoo.com>
+# BUG FIX:
+# + This patch to perl5db.pl cleans up formatting issues on the help
+# summary (h h) screen in the debugger. Mostly columnar alignment
+# issues, plus converted the printed text to use all spaces, since
+# tabs don't seem to help much here.
+#
+# Changes: 1.09: May 19, 2001 Ilya Zakharevich <ilya@math.ohio-state.edu>
+# 0) Minor bugs corrected;
+# a) Support for auto-creation of new TTY window on startup, either
+# unconditionally, or if started as a kid of another debugger session;
+# b) New `O'ption CreateTTY
+# I<CreateTTY> bits control attempts to create a new TTY on events:
+# 1: on fork() 2: debugger is started inside debugger
+# 4: on startup
+# c) Code to auto-create a new TTY window on OS/2 (currently one one
+# extra window per session - need named pipes to have more...);
+# d) Simplified interface for custom createTTY functions (with a backward
+# compatibility hack); now returns the TTY name to use; return of ''
+# means that the function reset the I/O handles itself;
+# d') Better message on the semantic of custom createTTY function;
+# e) Convert the existing code to create a TTY into a custom createTTY
+# function;
+# f) Consistent support for TTY names of the form "TTYin,TTYout";
+# g) Switch line-tracing output too to the created TTY window;
+# h) make `b fork' DWIM with CORE::GLOBAL::fork;
+# i) High-level debugger API cmd_*():
+# cmd_b_load($filenamepart) # b load filenamepart
+# cmd_b_line($lineno [, $cond]) # b lineno [cond]
+# cmd_b_sub($sub [, $cond]) # b sub [cond]
+# cmd_stop() # Control-C
+# cmd_d($lineno) # d lineno
+# The cmd_*() API returns FALSE on failure; in this case it outputs
+# the error message to the debugging output.
+# j) Low-level debugger API
+# break_on_load($filename) # b load filename
+# @files = report_break_on_load() # List files with load-breakpoints
+# breakable_line_in_filename($name, $from [, $to])
+# # First breakable line in the
+# # range $from .. $to. $to defaults
+# # to $from, and may be less than $to
+# breakable_line($from [, $to]) # Same for the current file
+# break_on_filename_line($name, $lineno [, $cond])
+# # Set breakpoint,$cond defaults to 1
+# break_on_filename_line_range($name, $from, $to [, $cond])
+# # As above, on the first
+# # breakable line in range
+# break_on_line($lineno [, $cond]) # As above, in the current file
+# break_subroutine($sub [, $cond]) # break on the first breakable line
+# ($name, $from, $to) = subroutine_filename_lines($sub)
+# # The range of lines of the text
+# The low-level API returns TRUE on success, and die()s on failure.
+#
+# Changes: 1.10: May 23, 2001 Daniel Lewart <d-lewart@uiuc.edu>
+# BUG FIXES:
+# + Fixed warnings generated by "perl -dWe 42"
+# + Corrected spelling errors
+# + Squeezed Help (h) output into 80 columns
+#
+# Changes: 1.11: May 24, 2001 David Dyck <dcd@tc.fluke.com>
+# + Made "x @INC" work like it used to
+#
+# Changes: 1.12: May 24, 2001 Daniel Lewart <d-lewart@uiuc.edu>
+# + Fixed warnings generated by "O" (Show debugger options)
+# + Fixed warnings generated by "p 42" (Print expression)
+# Changes: 1.13: Jun 19, 2001 Scott.L.Miller@compaq.com
+# + Added windowSize option
####################################################################
# Needed for the statement after exec():
TTY noTTY ReadLine NonStop LineInfo maxTraceLen
recallCommand ShellBang pager tkRunning ornaments
signalLevel warnLevel dieLevel inhibit_exit
- ImmediateStop bareStringify);
+ ImmediateStop bareStringify CreateTTY
+ RemotePort windowSize);
%optionVars = (
hashDepth => \$dumpvar::hashDepth,
HighBit => \$dumpvar::quoteHighBit,
undefPrint => \$dumpvar::printUndef,
globPrint => \$dumpvar::globPrint,
- UsageOnly => \$dumpvar::usageOnly,
+ UsageOnly => \$dumpvar::usageOnly,
+ CreateTTY => \$CreateTTY,
bareStringify => \$dumpvar::bareStringify,
frame => \$frame,
AutoTrace => \$trace,
inhibit_exit => \$inhibit_exit,
maxTraceLen => \$maxtrace,
ImmediateStop => \$ImmediateStop,
+ RemotePort => \$remoteport,
+ windowSize => \$window,
);
%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 = 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 $pretype;
+$CreateTTY = 3 unless defined $CreateTTY;
+
warnLevel($warnLevel);
dieLevel($dieLevel);
signalLevel($signalLevel);
-&pager((defined($ENV{PAGER})
+
+&pager(
+ (defined($ENV{PAGER})
? $ENV{PAGER}
: ($^O eq 'os2'
? 'cmd /c more'
: 'more'))) unless defined $pager;
+setman();
&recallCommand("!") unless defined $prc;
&shellBang("!") unless defined $psh;
+sethelp();
$maxtrace = 400 unless defined $maxtrace;
+$ini_pids = $ENV{PERLDB_PIDS};
+if (defined $ENV{PERLDB_PIDS}) {
+ $pids = "[$ENV{PERLDB_PIDS}]";
+ $ENV{PERLDB_PIDS} .= "->$$";
+ $term_pid = -1;
+} else {
+ $ENV{PERLDB_PIDS} = "$$";
+ $pids = '';
+ $term_pid = $$;
+}
+$pidprompt = '';
+*emacs = $slave_editor if $slave_editor; # May be used in afterinit()...
-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});
}
+if ( not defined &get_fork_TTY and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
+ and defined $ENV{WINDOWID} and defined $ENV{DISPLAY} ) { # _inside_ XTERM?
+ *get_fork_TTY = \&xterm_get_fork_TTY;
+} elsif ($^O eq 'os2') {
+ *get_fork_TTY = \&os2_get_fork_TTY;
+}
+
+# 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 ($^O =~ /cygwin/) {
+ 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";
+ } elsif ($^O eq 'MacOS') {
+ if ($MacPerl::Version !~ /MPW/) {
+ $console = "Dev:Console:Perl Debug"; # Separate window for application
+ } else {
+ $console = "Dev:Console";
+ }
} else {
$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;
}
+ if ($^O eq 'NetWare') {
+ $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;
}
$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
+ 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;
+ } elsif ($CreateTTY & 4) {
+ create_IN_OUT(4);
} 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;
+ if (defined $console) {
+ my ($i, $o) = split /,/, $console;
+ $o = $i unless defined $o;
+ open(IN,"+<$i") || open(IN,"<$i") || open(IN,"<&STDIN");
+ open(OUT,"+>$o") || open(OUT,">$o") || open(OUT,">&STDERR")
+ || open(OUT,">&STDOUT"); # so we don't dongle stdout
+ } else {
+ open(IN,"<&STDIN");
+ open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout
+ $console = 'STDIN/OUT';
+ }
+ # so open("|more") can read from STDOUT and so we don't dingle stdin
+ $IN = \*IN;
- $OUT = \*OUT;
- select($OUT);
+ $OUT = \*OUT;
+ }
+ my $previous = select($OUT);
$| = 1; # for DB::OUT
- select(STDOUT);
+ select($previous);
$LINEINFO = $OUT unless defined $LINEINFO;
$lineinfo = $console unless defined $lineinfo;
- $| = 1; # for real STDOUT
-
$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
unless ($runnonstop) {
- print $OUT "\nLoading DB routines from $header\n";
- print $OUT ("Emacs support ",
- $emacs ? "enabled" : "available",
- ".\n");
- print $OUT "\nEnter h or `h h' for help, run `perldoc perldebug' for more help.\n\n";
+ if ($term_pid eq '-1') {
+ print $OUT "\nDaughter DB session started...\n";
+ } else {
+ print $OUT "\nLoading DB routines from $header\n";
+ print $OUT ("Editor support ",
+ $slave_editor ? "enabled" : "available",
+ ".\n");
+ print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
+ }
}
}
"package $package;"; # this won't let them modify, alas
local(*dbline) = $main::{'_<' . $filename};
$max = $#dbline;
- if (($stop,$action) = split(/\0/,$dbline{$line})) {
+ if ($dbline{$line} && (($stop,$action) = split(/\0/,$dbline{$line}))) {
if ($stop eq '1') {
$signal |= 1;
} elsif ($stop) {
$was_signal = $signal;
$signal = 0;
if ($single || ($trace & 1) || $was_signal) {
- if ($emacs) {
+ if ($slave_editor) {
$position = "\032\032$filename:$line:0\n";
- print $LINEINFO $position;
+ print_lineinfo($position);
} elsif ($package eq 'DB::fake') {
$term || &setterm;
print_help(<<EOP);
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_depth, "$line:\t$dbline[$line]$after";
+ print_lineinfo(' ' x $stack_depth, "$line:\t$dbline[$line]$after");
} else {
- print $LINEINFO $position;
+ print_lineinfo($position);
}
for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
$position .= $incr_pos;
if ($frame) {
- print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
+ print_lineinfo(' ' x $stack_depth, "$i:\t$dbline[$i]$after");
} else {
- print $LINEINFO $incr_pos;
+ print_lineinfo($incr_pos);
}
}
}
@typeahead = (@$pretype, @typeahead);
CMD:
while (($term || &setterm),
- ($term_pid == $$ or &resetterm),
- defined ($cmd=&readline(" DB" . ('<' x $level) .
+ ($term_pid == $$ or resetterm(1)),
+ defined ($cmd=&readline("$pidprompt 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};
- $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
+ if ($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) && clean_ENV() && exit $?;
$cmd =~ /^h$/ && do {
print_help($help);
next CMD; };
$cmd =~ /^h\s+h$/ && 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 {
- $subname = $1;
+ $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 {
+ my $s = $subname = $1;
$subname =~ s/\'/::/;
$subname = $package."::".$subname
unless $subname =~ /::/;
+ $subname = "CORE::GLOBAL::$s"
+ if not defined &$subname and $s !~ /::/
+ and defined &{"CORE::GLOBAL::$s"};
$subname = "main".$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;
$filename = $filename_ini;
*dbline = $main::{'_<' . $filename};
$max = $#dbline;
- print $LINEINFO $position;
+ print_lineinfo($position);
next CMD };
$cmd =~ /^w\b\s*(\d*)$/ && do {
$incr = $window - 1;
$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 {
for (; $i <= $end; $i++) {
- ($stop,$action) = split(/\0/, $dbline{$i});
+ my ($stop,$action);
+ ($stop,$action) = split(/\0/, $dbline{$i}) if
+ $dbline{$i};
$arrow = ($i==$line
and $filename eq $filename_ini)
? '==>'
}
}
}
+
+ 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"
next CMD; };
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
my $file = $1; $file =~ s/\s+$//;
- {
- $break_on_load{$file} = 1;
- $break_on_load{$::INC{$file}} = 1 if $::INC{$file};
- $file .= '.pm', redo unless $file =~ /\./;
- }
- $had_breakpoints{$file} = 1;
- print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
+ cmd_b_load($file);
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/\'/::/;
- $subname = "${'package'}::" . $subname
- unless $subname =~ /::/;
- $subname = "main".$subname if substr($subname,0,2) eq "::";
- # Filename below can contain ':'
- ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
- $i += 0;
- if ($i) {
- $filename = $file;
- *dbline = $main::{'_<' . $filename};
- $had_breakpoints{$filename} = 1;
- $max = $#dbline;
- ++$i while $dbline[$i] == 0 && $i < $max;
- $dbline{$i} =~ s/^[^\0]*/$cond/;
- } else {
- print $OUT "Subroutine $subname not found.\n";
- }
+ $cond = length $2 ? $2 : '1';
+ cmd_b_sub($subname, $cond);
next CMD; };
$cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
- $i = ($1?$1:$line);
- $cond = $2 || '1';
- if ($dbline[$i] == 0) {
- print $OUT "Line $i not breakable.\n";
- } else {
- $had_breakpoints{$filename} = 1;
- $dbline{$i} =~ s/^[^\0]*/$cond/;
- }
+ $i = $1 || $line;
+ $cond = length $2 ? $2 : '1';
+ cmd_b_line($i, $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 {
+ cmd_d($1 || $line);
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 {
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 {
*dbline = $main::{'_<' . $file};
next unless %dbline or $postponed_file{$file};
(push @hard, $file), next
- if $file =~ /^\(eval \d+\)$/;
+ if $file =~ /^\(\w*eval/;
my @add;
@add = %{$postponed_file{$file}}
if $postponed_file{$file};
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;
+ delete $ENV{PERLDB_PIDS}; # Restore ini state
+ $ENV{PERLDB_PIDS} = $ini_pids if defined $ini_pids;
+ #print "$^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 $cmd, "\n";
redo CMD; };
&system($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*(.*\S)/ && do {
+ if (open my $fh, $1) {
+ push @cmdfhs, $fh;
+ }
+ else {
+ &warn("Can't execute `$1': $!\n");
+ }
+ next CMD; };
$cmd =~ /^\|\|?\s*[^|]/ && do {
if ($pager =~ /^\|/) {
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
} 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 {
$piped= "";
}
} # CMD:
- $exiting = 1 unless defined $cmd;
+ $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF
foreach $evalarg (@$post) {
&eval;
}
$single &= 1;
$single |= 4 if $stack_depth == $deep;
($frame & 4
- ? ( (print $LINEINFO ' ' x ($stack_depth - 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_depth - 1), "entering $sub$al\n") if $frame;
+ : print_lineinfo(' ' x ($stack_depth - 1), "entering $sub$al\n")) if $frame;
if (wantarray) {
@ret = &$sub;
$single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ ? ( 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;
+ : 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;
};
$single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ ? ( 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;
+ : 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;
}
}
+### The API section
+
+### Functions with multiple modes of failure die on error, the rest
+### returns FALSE on error.
+### User-interface functions cmd_* output error message.
+
+sub break_on_load {
+ my $file = shift;
+ $break_on_load{$file} = 1;
+ $had_breakpoints{$file} |= 1;
+}
+
+sub report_break_on_load {
+ sort keys %break_on_load;
+}
+
+sub cmd_b_load {
+ my $file = shift;
+ my @files;
+ {
+ push @files, $file;
+ push @files, $::INC{$file} if $::INC{$file};
+ $file .= '.pm', redo unless $file =~ /\./;
+ }
+ break_on_load($_) for @files;
+ @files = report_break_on_load;
+ print $OUT "Will stop on load of `@files'.\n";
+}
+
+$filename_error = '';
+
+sub breakable_line {
+ my ($from, $to) = @_;
+ my $i = $from;
+ if (@_ >= 2) {
+ my $delta = $from < $to ? +1 : -1;
+ my $limit = $delta > 0 ? $#dbline : 1;
+ $limit = $to if ($limit - $to) * $delta > 0;
+ $i += $delta while $dbline[$i] == 0 and ($limit - $i) * $delta > 0;
+ }
+ return $i unless $dbline[$i] == 0;
+ my ($pl, $upto) = ('', '');
+ ($pl, $upto) = ('s', "..$to") if @_ >=2 and $from != $to;
+ die "Line$pl $from$upto$filename_error not breakable\n";
+}
+
+sub breakable_line_in_filename {
+ my ($f) = shift;
+ local *dbline = $main::{'_<' . $f};
+ local $filename_error = " of `$f'";
+ breakable_line(@_);
+}
+
+sub break_on_line {
+ my ($i, $cond) = @_;
+ $cond = 1 unless @_ >= 2;
+ my $inii = $i;
+ my $after = '';
+ my $pl = '';
+ die "Line $i$filename_error not breakable.\n" if $dbline[$i] == 0;
+ $had_breakpoints{$filename} |= 1;
+ if ($dbline{$i}) { $dbline{$i} =~ s/^[^\0]*/$cond/; }
+ else { $dbline{$i} = $cond; }
+}
+
+sub cmd_b_line {
+ eval { break_on_line(@_); 1 } or print $OUT $@ and return;
+}
+
+sub break_on_filename_line {
+ my ($f, $i, $cond) = @_;
+ $cond = 1 unless @_ >= 3;
+ local *dbline = $main::{'_<' . $f};
+ local $filename_error = " of `$f'";
+ local $filename = $f;
+ break_on_line($i, $cond);
+}
+
+sub break_on_filename_line_range {
+ my ($f, $from, $to, $cond) = @_;
+ my $i = breakable_line_in_filename($f, $from, $to);
+ $cond = 1 unless @_ >= 3;
+ break_on_filename_line($f,$i,$cond);
+}
+
+sub subroutine_filename_lines {
+ my ($subname,$cond) = @_;
+ # Filename below can contain ':'
+ find_sub($subname) =~ /^(.*):(\d+)-(\d+)$/;
+}
+
+sub break_subroutine {
+ my $subname = shift;
+ my ($file,$s,$e) = subroutine_filename_lines($subname) or
+ die "Subroutine $subname not found.\n";
+ $cond = 1 unless @_ >= 2;
+ break_on_filename_line_range($file,$s,$e,@_);
+}
+
+sub cmd_b_sub {
+ my ($subname,$cond) = @_;
+ $cond = 1 unless @_ >= 2;
+ unless (ref $subname eq 'CODE') {
+ $subname =~ s/\'/::/g;
+ my $s = $subname;
+ $subname = "${'package'}::" . $subname
+ unless $subname =~ /::/;
+ $subname = "CORE::GLOBAL::$s"
+ if not defined &$subname and $s !~ /::/ and defined &{"CORE::GLOBAL::$s"};
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ }
+ eval { break_subroutine($subname,$cond); 1 } or print $OUT $@ and return;
+}
+
+sub cmd_stop { # As on ^C, but not signal-safy.
+ $signal = 1;
+}
+
+sub delete_breakpoint {
+ my $i = shift;
+ die "Line $i not breakable.\n" if $dbline[$i] == 0;
+ $dbline{$i} =~ s/^[^\0]*//;
+ delete $dbline{$i} if $dbline{$i} eq '';
+}
+
+sub cmd_d {
+ my $i = shift;
+ eval { delete_breakpoint $i; 1 } or print $OUT $@ and return;
+}
+
+### END of the API section
+
sub save {
@saved = ($@, $!, $^E, $,, $/, $\, $^W);
$, = ""; $/ = "\n"; $\ = ""; $^W = 0;
}
+sub print_lineinfo {
+ resetterm(1) if $LINEINFO eq $OUT and $term_pid != $$;
+ print $LINEINFO @_;
+}
+
# The following takes its argument via $evalarg to preserve current @_
sub eval {
- my @res;
+ # 'my' would make it visible from user code
+ # but so does local! --tchrist [... into @DB::res, not @res. IZ]
+ local @res;
{
- my $otrace = $trace;
- my $osingle = $single;
- my $od = $^D;
+ local $otrace = $trace;
+ local $osingle = $single;
+ local $od = $^D;
+ { ($evalarg) = $evalarg =~ /(.*)/s; }
@res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
$trace = $otrace;
$single = $osingle;
eval { &DB::save };
if ($at) {
print $OUT $at;
- } elsif ($onetimeDump eq 'dump') {
- dumpit($OUT, \@res);
- } elsif ($onetimeDump eq 'methods') {
- methods($res[0]);
+ } elsif ($onetimeDump) {
+ dumpit($OUT, \@res) if $onetimeDump eq 'dump';
+ methods($res[0]) if $onetimeDump eq 'methods';
}
@res;
}
$i += $offset;
local *dbline = $main::{'_<' . $file};
local $^W = 0; # != 0 is magical below
- $had_breakpoints{$file}++;
+ $had_breakpoints{$file} |= 1;
my $max = $#dbline;
++$i until $dbline[$i] != 0 or $i >= $max;
$dbline{$i} = delete $postponed{$subname};
$filename =~ s/^_<//;
$signal = 1, print $OUT "'$filename' loaded...\n"
if $break_on_load{$filename};
- print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
+ print_lineinfo(' ' x $stack_depth, "Package $filename.\n") if $frame;
return unless $postponed_file{$filename};
- $had_breakpoints{$filename}++;
+ $had_breakpoints{$filename} |= 1;
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
my $key;
for $key (keys %{$postponed_file{$filename}}) {
- $dbline{$key} = $ {$postponed_file{$filename}}{$key};
+ $dbline{$key} = ${$postponed_file{$filename}}{$key};
}
delete $postponed_file{$filename};
}
sub print_trace {
my $fh = shift;
+ resetterm(1) if $fh eq $LINEINFO and $LINEINFO eq $OUT and $term_pid != $$;
my @sub = dump_trace($_[0] + 1, $_[1]);
my $short = $_[2]; # Print short report, next one for sub name
my $s;
$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 {
eval { require Term::ReadLine } or die $@;
if ($notty) {
if ($tty) {
- open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
- open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
+ my ($i, $o) = split $tty, /,/;
+ $o = $i unless defined $o;
+ open(IN,"<$i") or die "Cannot open TTY `$i' for read: $!";
+ open(OUT,">$o") or die "Cannot open TTY `$o' for write: $!";
$IN = \*IN;
$OUT = \*OUT;
my $sel = select($OUT);
$| = 1;
select($sel);
} else {
- eval "require Term::Rendezvous;" or die $@;
+ eval "require Term::Rendezvous;" or die;
my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
my $term_rv = new Term::Rendezvous $rv;
$IN = $term_rv->IN;
$OUT = $term_rv->OUT;
}
}
+ if ($term_pid eq '-1') { # In a TTY with another debugger
+ resetterm(2);
+ }
if (!$rl) {
$term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
} else {
$term_pid = $$;
}
-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;\
+# Example get_fork_TTY functions
+sub xterm_get_fork_TTY {
+ (my $name = $0) =~ s,^.*[/\\],,s;
+ open XT, qq[3>&1 xterm -title "Daughter Perl debugger $pids $name" -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 {
+ my $tty = <XT>;
+ chomp $tty;
+ $pidprompt = ''; # Shown anyway in titlebar
+ return $tty;
+}
+
+# This one resets $IN, $OUT itself
+sub os2_get_fork_TTY {
+ $^F = 40; # XXXX Fixme!
+ my ($in1, $out1, $in2, $out2);
+ # Having -d in PERL5OPT would lead to a disaster...
+ local $ENV{PERL5OPT} = $ENV{PERL5OPT} if $ENV{PERL5OPT};
+ $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\b// if $ENV{PERL5OPT};
+ $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\B/-/ if $ENV{PERL5OPT};
+ print $OUT "Making PERL5OPT->`$ENV{PERL5OPT}'.\n" if $ENV{PERL5OPT};
+ (my $name = $0) =~ s,^.*[/\\],,s;
+ if ( pipe $in1, $out1 and pipe $in2, $out2 and
+ # system P_SESSION will fail if there is another process
+ # in the same session with a "dependent" asynchronous child session.
+ (($kpid = CORE::system 4, $^X, '-we', <<'ES', fileno $in1, fileno $out2, "Daughter Perl debugger $pids $name") >= 0 or warn "system P_SESSION: $!, $^E" and 0) # P_SESSION
+use Term::ReadKey;
+use OS2::Process;
+
+my $in = shift; # Read from here and pass through
+set_title pop;
+system P_NOWAIT, $^X, '-we', <<EOS or die "Cannot start a grandkid";
+ open IN, '<&=$in' or die "open <&=$in: \$!";
+ \$| = 1; print while sysread IN, \$_, 1<<16;
+EOS
+
+my $out = shift;
+open OUT, ">&=$out" or die "Cannot open &=$out for writing: $!";
+select OUT; $| = 1;
+ReadMode 4; # Nodelay on kbd. Pipe is automatically nodelay...
+print while sysread STDIN, $_, 1<<16;
+ES
+ and close $in1 and close $out2 ) {
+ $pidprompt = ''; # Shown anyway in titlebar
+ reset_IN_OUT($in2, $out1);
+ $tty = '*reset*';
+ return ''; # Indicate that reset_IN_OUT is called
+ }
+ return;
+}
+
+sub create_IN_OUT { # Create a window with IN/OUT handles redirected there
+ my $in = &get_fork_TTY if defined &get_fork_TTY;
+ $in = $fork_TTY if defined $fork_TTY; # Backward compatibility
+ if (not defined $in) {
+ my $why = shift;
+ print_help(<<EOP) if $why == 1;
+I<#########> Forked, but do not know how to create a new B<TTY>. I<#########>
+EOP
+ print_help(<<EOP) if $why == 2;
+I<#########> Daughter session, do not know how to change a B<TTY>. I<#########>
+ This may be an asynchronous session, so the parent debugger may be active.
+EOP
+ print_help(<<EOP) if $why != 4;
+ Since two debuggers fight for the same TTY, input is severely entangled.
+
+EOP
print_help(<<EOP);
-I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
- Define B<\$DB::fork_TTY>
- - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
- The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
+ I know how to switch the output to a different window in xterms
+ and OS/2 consoles only. For a manual switch, put the name of the created I<TTY>
+ in B<\$DB::fork_TTY>, or define a function B<DB::get_fork_TTY()> returning this.
+
On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
+
EOP
+ } elsif ($in ne '') {
+ TTY($in);
}
+ undef $fork_TTY;
+}
+
+sub resetterm { # We forked, so we need a different TTY
+ my $in = shift;
+ my $systemed = $in > 1 ? '-' : '';
+ if ($pids) {
+ $pids =~ s/\]/$systemed->$$]/;
+ } else {
+ $pids = "[$term_pid->$$]";
+ }
+ $pidprompt = $pids;
+ $term_pid = $$;
+ return unless $CreateTTY & $in;
+ create_IN_OUT($in);
}
sub readline {
+ local $.;
if (@typeahead) {
my $left = @typeahead;
my $got = shift @typeahead;
}
local $frame = 0;
local $doret = -2;
- $term->readline(@_);
+ while (@cmdfhs) {
+ my $line = CORE::readline($cmdfhs[-1]);
+ defined $line ? (print $OUT ">> $line" and return $line)
+ : close pop @cmdfhs;
+ }
+ 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};
}
+ $val = $default unless defined $val;
$val
}
sub parse_options {
local($_)= @_;
- 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 windowSize
+ 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;
}
print $OUT $msg;
}
+sub reset_IN_OUT {
+ my $switch_li = $LINEINFO eq $OUT;
+ if ($term and $term->Features->{newTTY}) {
+ ($IN, $OUT) = (shift, shift);
+ $term->newTTY($IN, $OUT);
+ } elsif ($term) {
+ &warn("Too late to set IN/OUT filehandles, enabled on next `R'!\n");
+ } else {
+ ($IN, $OUT) = (shift, shift);
+ }
+ my $o = select $OUT;
+ $| = 1;
+ select $o;
+ $LINEINFO = $OUT if $switch_li;
+}
+
sub TTY {
if (@_ and $term and $term->Features->{newTTY}) {
my ($in, $out) = shift;
}
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;
+ reset_IN_OUT(\*IN,\*OUT);
return $tty = $in;
- } elsif ($term and @_) {
- &warn("Too late to set TTY, enabled on next `R'!\n");
- }
+ }
+ &warn("Too late to set TTY, enabled on next `R'!\n") if $term and @_;
+ # Useful if done through PERLDB_OPTS:
$tty = shift if @_;
$tty or $console;
}
$rl;
}
+sub RemotePort {
+ if ($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";
$psh = $sh;
$psh =~ s/\\b$//;
$psh =~ s/\\(.)/$1/g;
- &sethelp;
$psh;
}
$prc = $rc;
$prc =~ s/\\b$//;
$prc =~ s/\\(.)/$1/g;
- &sethelp;
$prc;
}
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};
}
}
sub sethelp {
+ # XXX: make sure there are tabs between the command and explanation,
+ # 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<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.
. ( $rc eq $sh ? "" : "
B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
See 'B<O> I<shellBang>' too.
+B<@>I<file> Execute I<file> containing debugger commands (may nest).
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<v> Show versions of loaded modules.
B<R> Pure-man-restart of debugger, some of debugger state
and command-line options may be lost.
- Currently the following setting are preserved:
+ Currently the following settings 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 subroutine entry/exit.
+ I<AutoTrace> affects printing messages on possible breaking points.
+ I<maxTraceLen> gives max length of evals/args listed in stack trace.
+ I<ornaments> affects screen appearance of the command line.
+ I<CreateTTY> bits control attempts to create a new TTY on events:
+ 1: on fork() 2: debugger is started inside debugger
+ 4: on startup
+ 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.
- Complete description of debugger is available in B<perldebug>
- section of Perl documention
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: }}}}
-";
+ # note: tabs in the following section are not-so-helpful
$summary = <<"END_SUM";
I<List/search source lines:> I<Control script execution:>
B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
- B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
+ B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
I<Debugger controls:> B<L> List break/watch/actions
B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
B<|>[B<|>]I<db_cmd> Send output to pager B<$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 array 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>]\".
-I<More help for> B<db_cmd>I<:> Type B<h> I<cmd_letter> Run B<perldoc perldebug> for more help.
+ 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 {
- 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 $_ = shift;
+
+ # Restore proper alignment destroyed by eeevil I<> and B<>
+ # ornaments: A pox on both their houses!
+ #
+ # A help command will have everything up to and including
+ # the first tab sequence padded into a field 16 (or if indented 20)
+ # wide. If it's wider than that, an extra space will be added.
+ s{
+ ^ # only matters at start of line
+ ( \040{4} | \t )* # some subcommands are indented
+ ( < ? # so <CR> works
+ [BI] < [^\t\n] + ) # find an eeevil ornament
+ ( \t+ ) # original separation, discarded
+ ( .* ) # this will now start (no earlier) than
+ # column 16
+ } {
+ my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4);
+ my $clean = $command;
+ $clean =~ s/[BI]<([^>]*)>/$1/g;
+ # replace with this whole string:
+ ($leadwhite ? " " x 4 : "")
+ . $command
+ . ((" " x (16 + ($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 $SIG{__DIE__} = '';
eval { require Carp } if defined $^S; # If error/warning during compilation,
# require may be broken.
- warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
+ CORE::warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
return unless defined &Carp::longmess;
my ($mysingle,$mytrace) = ($single,$trace);
$single = 0; $trace = 0;
if ($dieLevel < 2) {
die @_ if $^S; # in eval propagate
}
- eval { require Carp } if defined $^S; # If error/warning during compilation,
+ # No need to check $^S, eval is much more robust nowadays
+ 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(@_);
+ my $mess = "@_";
+ {
+ package Carp; # Do not include us in the list
+ eval {
+ $mess = Carp::longmess(@_);
+ };
+ }
($single,$trace) = ($mysingle,$mytrace);
die $mess;
}
$warnLevel = shift;
if ($warnLevel) {
$SIG{__WARN__} = \&DB::dbwarn;
- } else {
+ } elsif ($prevwarn) {
$SIG{__WARN__} = $prevwarn;
}
}
( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
if $I_m_init;
print $OUT "Dump printed too.\n" if $dieLevel > 2;
- } else {
+ } elsif ($prevdie) {
$SIG{__DIE__} = $prevdie;
print $OUT "Default die handler restored.\n";
}
$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...
+ return unless ref $in;
+ $in = \&$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|NetWare)\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 = $^O =~ /dunno what goes here/;
+ if (CORE::system($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
+ })
+ {
+ $page =~ s/^/perl/;
+ CORE::system($doccmd,
+ (($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
+ $page);
+ }
+ }
+ }
+ if (defined $oldpath) {
+ $ENV{MANPATH} = $manpath;
+ } else {
+ delete $ENV{MANPATH};
+ }
+}
+
# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
BEGIN { # This does not compile, alas.
BEGIN {$^W = $ini_warn;} # Switch warnings back
-#use Carp; # This did break, left for debuggin
+#use Carp; # This did break, left for debugging
sub db_complete {
# Specific code for b c l V m f O, &blah, $blah, @blah, %blah
my($text, $line, $start) = @_;
my ($itext, $search, $prefix, $pack) =
- ($text, "^\Q$ {'package'}::\E([^:]+)\$");
+ ($text, "^\Q${'package'}::\E([^:]+)\$");
return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
(map { /$search/ ? ($1) : () } keys %sub)
print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
}
+sub clean_ENV {
+ if (defined($ini_pids)) {
+ $ENV{PERLDB_PIDS} = $ini_pids;
+ } else {
+ delete($ENV{PERLDB_PIDS});
+ }
+}
+
END {
- $finished = $inhibit_exit; # So that some keys may be disabled.
+ $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:
- $DB::single = !$exiting && !$runnonstop;
- DB::fake::at_exit() unless $exiting or $runnonstop;
+ $DB::single = !$fall_off_end && !$runnonstop;
+ DB::fake::at_exit() unless $fall_off_end or $runnonstop;
}
package DB::fake;
https://perl5.git.perl.org / perl5.git / blobdiff