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Diffstat (limited to 'contrib/perl5/lib/perl5db.pl')
| -rw-r--r-- | contrib/perl5/lib/perl5db.pl | 2708 |
1 files changed, 0 insertions, 2708 deletions
diff --git a/contrib/perl5/lib/perl5db.pl b/contrib/perl5/lib/perl5db.pl deleted file mode 100644 index 63b4381..0000000 --- a/contrib/perl5/lib/perl5db.pl +++ /dev/null @@ -1,2708 +0,0 @@ -package DB; - -# Debugger for Perl 5.00x; perl5db.pl patch level: - -$VERSION = 1.07; -$header = "perl5db.pl version $VERSION"; - -# -# This file is automatically included if you do perl -d. -# It's probably not useful to include this yourself. -# -# Perl supplies the values for %sub. It effectively inserts -# a &DB'DB(); in front of every place that can have a -# breakpoint. Instead of a subroutine call it calls &DB::sub with -# $DB::sub being the called subroutine. It also inserts a BEGIN -# {require 'perl5db.pl'} before the first line. -# -# After each `require'd file is compiled, but before it is executed, a -# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the -# $filename is the expanded name of the `require'd file (as found as -# value of %INC). -# -# Additional services from Perl interpreter: -# -# if caller() is called from the package DB, it provides some -# additional data. -# -# The array @{$main::{'_<'.$filename}} is the line-by-line contents of -# $filename. -# -# The hash %{'_<'.$filename} contains breakpoints and action (it is -# keyed by line number), and individual entries are settable (as -# opposed to the whole hash). Only true/false is important to the -# interpreter, though the values used by perl5db.pl have the form -# "$break_condition\0$action". Values are magical in numeric context. -# -# The scalar ${'_<'.$filename} contains $filename. -# -# Note that no subroutine call is possible until &DB::sub is defined -# (for subroutines defined outside of the package DB). In fact the same is -# true if $deep is not defined. -# -# $Log: perldb.pl,v $ - -# -# At start reads $rcfile that may set important options. This file -# may define a subroutine &afterinit that will be executed after the -# debugger is initialized. -# -# After $rcfile is read reads environment variable PERLDB_OPTS and parses -# it as a rest of `O ...' line in debugger prompt. -# -# The options that can be specified only at startup: -# [To set in $rcfile, call &parse_options("optionName=new_value").] -# -# TTY - the TTY to use for debugging i/o. -# -# noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set -# uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using -# Term::Rendezvous. Current variant is to have the name of TTY in this -# file. -# -# ReadLine - If false, dummy ReadLine is used, so you can debug -# ReadLine applications. -# -# NonStop - if true, no i/o is performed until interrupt. -# -# LineInfo - file or pipe to print line number info to. If it is a -# pipe, a short "emacs like" message is used. -# -# RemotePort - host:port to connect to on remote host for remote debugging. -# -# Example $rcfile: (delete leading hashes!) -# -# &parse_options("NonStop=1 LineInfo=db.out"); -# sub afterinit { $trace = 1; } -# -# The script will run without human intervention, putting trace -# information into db.out. (If you interrupt it, you would better -# reset LineInfo to something "interactive"!) -# -################################################################## - -# 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 -# debugger about entry into XSUBs, overloaded operators, tied operations, -# BEGIN and END. Handy with `O f=2'. - -# This can make debugger a little bit too verbose, please be patient -# and report your problems promptly. - -# Now the option frame has 3 values: 0,1,2. - -# Note that if DESTROY returns a reference to the object (or object), -# the deletion of data may be postponed until the next function call, -# due to the need to examine the return value. - -# Changes: 0.95: `v' command shows versions. -# Changes: 0.96: `v' command shows version of readline. -# primitive completion works (dynamic variables, subs for `b' and `l', -# options). Can `p %var' -# Better help (`h <' now works). New commands <<, >>, {, {{. -# {dump|print}_trace() coded (to be able to do it from <<cmd). -# `c sub' documented. -# At last enough magic combined to stop after the end of debuggee. -# !! should work now (thanks to Emacs bracket matching an extra -# `]' in a regexp is caught). -# `L', `D' and `A' span files now (as documented). -# Breakpoints in `require'd code are possible (used in `R'). -# Some additional words on internal work of debugger. -# `b load filename' implemented. -# `b postpone subr' implemented. -# now only `q' exits debugger (overwriteable on $inhibit_exit). -# When restarting debugger breakpoints/actions persist. -# Buglet: When restarting debugger only one breakpoint/action per -# autoloaded function persists. -# Changes: 0.97: NonStop will not stop in at_exit(). -# Option AutoTrace implemented. -# Trace printed differently if frames are printed too. -# new `inhibitExit' option. -# printing of a very long statement interruptible. -# Changes: 0.98: New command `m' for printing possible methods -# 'l -' is a synonim for `-'. -# Cosmetic bugs in printing stack trace. -# `frame' & 8 to print "expanded args" in stack trace. -# Can list/break in imported subs. -# new `maxTraceLen' option. -# frame & 4 and frame & 8 granted. -# new command `m' -# nonstoppable lines do not have `:' near the line number. -# `b compile subname' implemented. -# Will not use $` any more. -# `-' behaves sane now. -# Changes: 0.99: Completion for `f', `m'. -# `m' will remove duplicate names instead of duplicate functions. -# `b load' strips trailing whitespace. -# completion ignores leading `|'; takes into account current package -# when completing a subroutine name (same for `l'). -# 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. - -#################################################################### - -# Needed for the statement after exec(): - -BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. -local($^W) = 0; # Switch run-time warnings off during init. -warn ( # Do not ;-) - $dumpvar::hashDepth, - $dumpvar::arrayDepth, - $dumpvar::dumpDBFiles, - $dumpvar::dumpPackages, - $dumpvar::quoteHighBit, - $dumpvar::printUndef, - $dumpvar::globPrint, - $dumpvar::usageOnly, - @ARGS, - $Carp::CarpLevel, - $panic, - $second_time, - ) if 0; - -# Command-line + PERLLIB: -@ini_INC = @INC; - -# $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! - -$trace = $signal = $single = 0; # Uninitialized warning suppression - # (local $^W cannot help - other packages!). -$inhibit_exit = $option{PrintRet} = 1; - -@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused - compactDump veryCompact quote HighBit undefPrint - globPrint PrintRet UsageOnly frame AutoTrace - TTY noTTY ReadLine NonStop LineInfo maxTraceLen - recallCommand ShellBang pager tkRunning ornaments - signalLevel warnLevel dieLevel inhibit_exit - ImmediateStop bareStringify - RemotePort); - -%optionVars = ( - hashDepth => \$dumpvar::hashDepth, - arrayDepth => \$dumpvar::arrayDepth, - DumpDBFiles => \$dumpvar::dumpDBFiles, - DumpPackages => \$dumpvar::dumpPackages, - DumpReused => \$dumpvar::dumpReused, - HighBit => \$dumpvar::quoteHighBit, - undefPrint => \$dumpvar::printUndef, - globPrint => \$dumpvar::globPrint, - UsageOnly => \$dumpvar::usageOnly, - bareStringify => \$dumpvar::bareStringify, - frame => \$frame, - AutoTrace => \$trace, - inhibit_exit => \$inhibit_exit, - maxTraceLen => \$maxtrace, - ImmediateStop => \$ImmediateStop, - RemotePort => \$remoteport, -); - -%optionAction = ( - compactDump => \&dumpvar::compactDump, - veryCompact => \&dumpvar::veryCompact, - quote => \&dumpvar::quote, - TTY => \&TTY, - noTTY => \&noTTY, - ReadLine => \&ReadLine, - NonStop => \&NonStop, - LineInfo => \&LineInfo, - recallCommand => \&recallCommand, - ShellBang => \&shellBang, - pager => \&pager, - signalLevel => \&signalLevel, - warnLevel => \&warnLevel, - dieLevel => \&dieLevel, - tkRunning => \&tkRunning, - ornaments => \&ornaments, - RemotePort => \&RemotePort, - ); - -%optionRequire = ( - compactDump => 'dumpvar.pl', - veryCompact => 'dumpvar.pl', - quote => 'dumpvar.pl', - ); - -# These guys may be defined in $ENV{PERL5DB} : -$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} - : ($^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") { # 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) { - 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; - @hist = get_list('PERLDB_HIST'); - %break_on_load = get_list("PERLDB_ON_LOAD"); - %postponed = get_list("PERLDB_POSTPONE"); - my @had_breakpoints= get_list("PERLDB_VISITED"); - for (0 .. $#had_breakpoints) { - my %pf = get_list("PERLDB_FILE_$_"); - $postponed_file{$had_breakpoints[$_]} = \%pf if %pf; - } - my %opt = get_list("PERLDB_OPT"); - my ($opt,$val); - while (($opt,$val) = each %opt) { - $val =~ s/[\\\']/\\$1/g; - parse_options("$opt'$val'"); - } - @INC = get_list("PERLDB_INC"); - @ini_INC = @INC; - $pretype = [get_list("PERLDB_PRETYPE")]; - $pre = [get_list("PERLDB_PRE")]; - $post = [get_list("PERLDB_POST")]; - @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead); -} - -if ($notty) { - $runnonstop = 1; -} else { - # Is Perl being run from 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 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 ($slave_editor or defined $ENV{EMACS})) { - $console = undef; - } - - # Around a bug: - 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 $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; - } - 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; - } - select($OUT); - $| = 1; # for DB::OUT - select(STDOUT); - - $LINEINFO = $OUT unless defined $LINEINFO; - $lineinfo = $console unless defined $lineinfo; - - $| = 1; # for real STDOUT - - $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; - unless ($runnonstop) { - print $OUT "\nLoading DB routines from $header\n"; - print $OUT ("Editor support ", - $slave_editor ? "enabled" : "available", - ".\n"); - print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n"; - } -} - -@ARGS = @ARGV; -for (@args) { - s/\'/\\\'/g; - s/(.*)/'$1'/ unless /^-?[\d.]+$/; -} - -if (defined &afterinit) { # May be defined in $rcfile - &afterinit(); -} - -$I_m_init = 1; - -############################################################ Subroutines - -sub DB { - # _After_ the perl program is compiled, $single is set to 1: - if ($single and not $second_time++) { - if ($runnonstop) { # Disable until signal - for ($i=0; $i <= $stack_depth; ) { - $stack[$i++] &= ~1; - } - $single = 0; - # return; # Would not print trace! - } elsif ($ImmediateStop) { - $ImmediateStop = 0; - $signal = 1; - } - } - $runnonstop = 0 if $single or $signal; # Disable it if interactive. - &save; - ($package, $filename, $line) = caller; - $filename_ini = $filename; - $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . - "package $package;"; # this won't let them modify, alas - local(*dbline) = $main::{'_<' . $filename}; - $max = $#dbline; - if (($stop,$action) = split(/\0/,$dbline{$line})) { - if ($stop eq '1') { - $signal |= 1; - } elsif ($stop) { - $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval; - $dbline{$line} =~ s/;9($|\0)/$1/; - } - } - my $was_signal = $signal; - if ($trace & 2) { - for (my $n = 0; $n <= $#to_watch; $n++) { - $evalarg = $to_watch[$n]; - local $onetimeDump; # Do not output results - my ($val) = &eval; # Fix context (&eval is doing array)? - $val = ( (defined $val) ? "'$val'" : 'undef' ); - if ($val ne $old_watch[$n]) { - $signal = 1; - print $OUT <<EOP; -Watchpoint $n:\t$to_watch[$n] changed: - old value:\t$old_watch[$n] - new value:\t$val -EOP - $old_watch[$n] = $val; - } - } - } - if ($trace & 4) { # User-installed watch - return if watchfunction($package, $filename, $line) - and not $single and not $was_signal and not ($trace & ~4); - } - $was_signal = $signal; - $signal = 0; - if ($single || ($trace & 1) || $was_signal) { - if ($slave_editor) { - $position = "\032\032$filename:$line:0\n"; - print $LINEINFO $position; - } elsif ($package eq 'DB::fake') { - $term || &setterm; - print_help(<<EOP); -Debugged program terminated. Use B<q> to quit or B<R> to restart, - use B<O> I<inhibit_exit> to avoid stopping after program termination, - B<h q>, B<h R> or B<h O> to get additional info. -EOP - $package = 'main'; - $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . - "package $package;"; # this won't let them modify, alas - } else { - $sub =~ s/\'/::/; - $prefix = $sub =~ /::/ ? "" : "${'package'}::"; - $prefix .= "$sub($filename:"; - $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); - if (length($prefix) > 30) { - $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; - $prefix = ""; - $infix = ":\t"; - } else { - $infix = "):\t"; - $position = "$prefix$line$infix$dbline[$line]$after"; - } - if ($frame) { - print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after"; - } else { - print $LINEINFO $position; - } - for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi - last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; - last if $signal; - $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); - $incr_pos = "$prefix$i$infix$dbline[$i]$after"; - $position .= $incr_pos; - if ($frame) { - print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after"; - } else { - print $LINEINFO $incr_pos; - } - } - } - } - $evalarg = $action, &eval if $action; - if ($single || $was_signal) { - local $level = $level + 1; - foreach $evalarg (@$pre) { - &eval; - } - print $OUT $stack_depth . " levels deep in subroutine calls!\n" - if $single & 4; - $start = $line; - $incr = -1; # for backward motion. - @typeahead = (@$pretype, @typeahead); - CMD: - while (($term || &setterm), - ($term_pid == $$ or &resetterm), - defined ($cmd=&readline(" DB" . ('<' x $level) . - ($#hist+1) . ('>' x $level) . - " "))) - { - $single = 0; - $signal = 0; - $cmd =~ s/\\$/\n/ && do { - $cmd .= &readline(" cont: "); - redo CMD; - }; - $cmd =~ /^$/ && ($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); - if ($alias{$i}) { - # squelch the sigmangler - local $SIG{__DIE__}; - local $SIG{__WARN__}; - eval "\$cmd =~ $alias{$i}"; - if ($@) { - print $OUT "Couldn't evaluate `$i' alias: $@"; - next CMD; - } - } - $cmd =~ /^q$/ && ($fall_off_end = 1) && exit $?; - $cmd =~ /^h$/ && do { - print_help($help); - next CMD; }; - $cmd =~ /^h\s+h$/ && do { - print_help($summary); - next CMD; }; - # support long commands; otherwise bogus errors - # happen when you ask for h on <CR> for example - $cmd =~ /^h\s+(\S.*)$/ && do { - my $asked = $1; # for proper errmsg - my $qasked = quotemeta($asked); # for searching - # XXX: finds CR but not <CR> - if ($help =~ /^<?(?:[IB]<)$qasked/m) { - while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) { - print_help($1); - } - } else { - print_help("B<$asked> is not a debugger command.\n"); - } - next CMD; }; - $cmd =~ /^t$/ && do { - $trace ^= 1; - print $OUT "Trace = " . - (($trace & 1) ? "on" : "off" ) . "\n"; - next CMD; }; - $cmd =~ /^S(\s+(!)?(.+))?$/ && do { - $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; - foreach $subname (sort(keys %sub)) { - if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { - print $OUT $subname,"\n"; - } - } - next CMD; }; - $cmd =~ /^v$/ && do { - list_versions(); next CMD}; - $cmd =~ s/^X\b/V $package/; - $cmd =~ /^V$/ && do { - $cmd = "V $package"; }; - $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { - local ($savout) = select($OUT); - $packname = $1; - @vars = split(' ',$2); - do 'dumpvar.pl' unless defined &main::dumpvar; - if (defined &main::dumpvar) { - local $frame = 0; - local $doret = -2; - # must detect sigpipe failures - eval { &main::dumpvar($packname,@vars) }; - if ($@) { - die unless $@ =~ /dumpvar print failed/; - } - } else { - print $OUT "dumpvar.pl not available.\n"; - } - select ($savout); - next CMD; }; - $cmd =~ s/^x\b/ / && do { # So that will be evaled - $onetimeDump = 'dump'; }; - $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do { - methods($1); next CMD}; - $cmd =~ s/^m\b/ / && do { # So this will be evaled - $onetimeDump = 'methods'; }; - $cmd =~ /^f\b\s*(.*)/ && do { - $file = $1; - $file =~ s/\s+$//; - if (!$file) { - print $OUT "The old f command is now the r command.\n"; - print $OUT "The new f command switches filenames.\n"; - next CMD; - } - if (!defined $main::{'_<' . $file}) { - if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ - $try = substr($try,2); - print $OUT "Choosing $try matching `$file':\n"; - $file = $try; - }} - } - if (!defined $main::{'_<' . $file}) { - print $OUT "No file matching `$file' is loaded.\n"; - next CMD; - } elsif ($file ne $filename) { - *dbline = $main::{'_<' . $file}; - $max = $#dbline; - $filename = $file; - $start = 1; - $cmd = "l"; - } else { - print $OUT "Already in $file.\n"; - next CMD; - } - }; - $cmd =~ s/^l\s+-\s*$/-/; - $cmd =~ /^([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) || $sub{$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 = $file; - } - if ($subrange) { - if (eval($subrange) < -$window) { - $subrange =~ s/-.*/+/; - } - $cmd = "l $subrange"; - } else { - print $OUT "Subroutine $subname not found.\n"; - next CMD; - } }; - $cmd =~ /^\.$/ && do { - $incr = -1; # for backward motion. - $start = $line; - $filename = $filename_ini; - *dbline = $main::{'_<' . $filename}; - $max = $#dbline; - print $LINEINFO $position; - next CMD }; - $cmd =~ /^w\b\s*(\d*)$/ && do { - $incr = $window - 1; - $start = $1 if $1; - $start -= $preview; - #print $OUT 'l ' . $start . '-' . ($start + $incr); - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^-$/ && do { - $start -= $incr + $window + 1; - $start = 1 if $start <= 0; - $incr = $window - 1; - $cmd = 'l ' . ($start) . '+'; }; - $cmd =~ /^l$/ && do { - $incr = $window - 1; - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { - $start = $1 if $1; - $incr = $2; - $incr = $window - 1 unless $incr; - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { - $end = (!defined $2) ? $max : ($4 ? $4 : $2); - $end = $max if $end > $max; - $i = $2; - $i = $line if $i eq '.'; - $i = 1 if $i < 1; - $incr = $end - $i; - if ($slave_editor) { - print $OUT "\032\032$filename:$i:0\n"; - $i = $end; - } else { - for (; $i <= $end; $i++) { - ($stop,$action) = split(/\0/, $dbline{$i}); - $arrow = ($i==$line - and $filename eq $filename_ini) - ? '==>' - : ($dbline[$i]+0 ? ':' : ' ') ; - $arrow .= 'b' if $stop; - $arrow .= 'a' if $action; - print $OUT "$i$arrow\t", $dbline[$i]; - $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; - next CMD; }; - $cmd =~ /^D$/ && do { - print $OUT "Deleting all breakpoints...\n"; - my $file; - for $file (keys %had_breakpoints) { - local *dbline = $main::{'_<' . $file}; - my $max = $#dbline; - my $was; - - for ($i = 1; $i <= $max ; $i++) { - if (defined $dbline{$i}) { - $dbline{$i} =~ s/^[^\0]+//; - if ($dbline{$i} =~ s/^\0?$//) { - delete $dbline{$i}; - } - } - } - - if (not $had_breakpoints{$file} &= ~1) { - delete $had_breakpoints{$file}; - } - } - undef %postponed; - undef %postponed_file; - undef %break_on_load; - next CMD; }; - $cmd =~ /^L$/ && do { - my $file; - for $file (keys %had_breakpoints) { - local *dbline = $main::{'_<' . $file}; - my $max = $#dbline; - my $was; - - for ($i = 1; $i <= $max; $i++) { - if (defined $dbline{$i}) { - print $OUT "$file:\n" unless $was++; - print $OUT " $i:\t", $dbline[$i]; - ($stop,$action) = split(/\0/, $dbline{$i}); - print $OUT " break if (", $stop, ")\n" - if $stop; - print $OUT " action: ", $action, "\n" - if $action; - last if $signal; - } - } - } - if (%postponed) { - print $OUT "Postponed breakpoints in subroutines:\n"; - my $subname; - for $subname (keys %postponed) { - print $OUT " $subname\t$postponed{$subname}\n"; - last if $signal; - } - } - my @have = map { # Combined keys - keys %{$postponed_file{$_}} - } keys %postponed_file; - if (@have) { - print $OUT "Postponed breakpoints in files:\n"; - my ($file, $line); - for $file (keys %postponed_file) { - my $db = $postponed_file{$file}; - print $OUT " $file:\n"; - for $line (sort {$a <=> $b} keys %$db) { - print $OUT " $line:\n"; - my ($stop,$action) = split(/\0/, $$db{$line}); - print $OUT " break if (", $stop, ")\n" - if $stop; - print $OUT " action: ", $action, "\n" - if $action; - last if $signal; - } - last if $signal; - } - } - if (%break_on_load) { - print $OUT "Breakpoints on load:\n"; - my $file; - for $file (keys %break_on_load) { - print $OUT " $file\n"; - last if $signal; - } - } - if ($trace & 2) { - print $OUT "Watch-expressions:\n"; - my $expr; - for $expr (@to_watch) { - print $OUT " $expr\n"; - last if $signal; - } - } - next CMD; }; - $cmd =~ /^b\b\s*load\b\s*(.*)/ && do { - my $file = $1; $file =~ s/\s+$//; - { - $break_on_load{$file} = 1; - $break_on_load{$::INC{$file}} = 1 if $::INC{$file}; - $file .= '.pm', redo unless $file =~ /\./; - } - $had_breakpoints{$file} |= 1; - print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n"; - next CMD; }; - $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { - my $cond = length $3 ? $3 : '1'; - my ($subname, $break) = ($2, $1 eq 'postpone'); - $subname =~ s/\'/::/g; - $subname = "${'package'}::" . $subname - unless $subname =~ /::/; - $subname = "main".$subname if substr($subname,0,2) eq "::"; - $postponed{$subname} = $break - ? "break +0 if $cond" : "compile"; - next CMD; }; - $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do { - $subname = $1; - $cond = length $2 ? $2 : '1'; - $subname =~ s/\'/::/g; - $subname = "${'package'}::" . $subname - unless $subname =~ /::/; - $subname = "main".$subname if substr($subname,0,2) eq "::"; - # Filename below can contain ':' - ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/); - $i += 0; - if ($i) { - 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/; - } else { - print $OUT "Subroutine $subname not found.\n"; - } - next CMD; }; - $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { - $i = $1 || $line; - $cond = length $2 ? $2 : '1'; - if ($dbline[$i] == 0) { - print $OUT "Line $i not breakable.\n"; - } else { - $had_breakpoints{$filename} |= 1; - $dbline{$i} =~ s/^[^\0]*/$cond/; - } - next CMD; }; - $cmd =~ /^d\b\s*(\d*)/ && do { - $i = $1 || $line; - if ($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}; - my $max = $#dbline; - my $was; - - for ($i = 1; $i <= $max ; $i++) { - if (defined $dbline{$i}) { - $dbline{$i} =~ s/\0[^\0]*//; - delete $dbline{$i} if $dbline{$i} eq ''; - } - } - - unless ($had_breakpoints{$file} &= ~2) { - delete $had_breakpoints{$file}; - } - } - next CMD; }; - $cmd =~ /^O\s*$/ && do { - for (@options) { - &dump_option($_); - } - next CMD; }; - $cmd =~ /^O\s*(\S.*)/ && do { - parse_options($1); - next CMD; }; - $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE - push @$pre, action($1); - next CMD; }; - $cmd =~ /^>>\s*(.*)/ && do { - push @$post, action($1); - next CMD; }; - $cmd =~ /^<\s*(.*)/ && do { - 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 { - 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 { - 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 || $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]*//; - delete $dbline{$i} if $dbline{$i} eq ''; - } - next CMD; }; - $cmd =~ /^n$/ && do { - end_report(), next CMD if $finished and $level <= 1; - $single = 2; - $laststep = $cmd; - last CMD; }; - $cmd =~ /^s$/ && do { - end_report(), next CMD if $finished and $level <= 1; - $single = 1; - $laststep = $cmd; - last CMD; }; - $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { - end_report(), next CMD if $finished and $level <= 1; - $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 $subname =~ /::/; - ($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; - } else { - print $OUT "Subroutine $subname not found.\n"; - next CMD; - } - } - if ($i) { - if ($dbline[$i] == 0) { - print $OUT "Line $i not breakable.\n"; - next CMD; - } - $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. - } - for ($i=0; $i <= $stack_depth; ) { - $stack[$i++] &= ~1; - } - last CMD; }; - $cmd =~ /^r$/ && do { - end_report(), next CMD if $finished and $level <= 1; - $stack[$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"; - my (@script, @flags, $cl); - push @flags, '-w' if $ini_warn; - # Put all the old includes at the start to get - # the same debugger. - for (@ini_INC) { - push @flags, '-I', $_; - } - # Arrange for setting the old INC: - set_list("PERLDB_INC", @ini_INC); - if ($0 eq '-e') { - for (1..$#{'::_<-e'}) { # The first line is PERL5DB - chomp ($cl = ${'::_<-e'}[$_]); - push @script, '-e', $cl; - } - } else { - @script = $0; - } - set_list("PERLDB_HIST", - $term->Features->{getHistory} - ? $term->GetHistory : @hist); - my @had_breakpoints = keys %had_breakpoints; - set_list("PERLDB_VISITED", @had_breakpoints); - set_list("PERLDB_OPT", %option); - set_list("PERLDB_ON_LOAD", %break_on_load); - my @hard; - for (0 .. $#had_breakpoints) { - my $file = $had_breakpoints[$_]; - *dbline = $main::{'_<' . $file}; - next unless %dbline or $postponed_file{$file}; - (push @hard, $file), next - if $file =~ /^\(eval \d+\)$/; - my @add; - @add = %{$postponed_file{$file}} - if $postponed_file{$file}; - set_list("PERLDB_FILE_$_", %dbline, @add); - } - for (@hard) { # Yes, really-really... - # Find the subroutines in this eval - *dbline = $main::{'_<' . $_}; - my ($quoted, $sub, %subs, $line) = quotemeta $_; - for $sub (keys %sub) { - next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/; - $subs{$sub} = [$1, $2]; - } - unless (%subs) { - print $OUT - "No subroutines in $_, ignoring breakpoints.\n"; - next; - } - LINES: for $line (keys %dbline) { - # One breakpoint per sub only: - my ($offset, $sub, $found); - SUBS: for $sub (keys %subs) { - if ($subs{$sub}->[1] >= $line # Not after the subroutine - and (not defined $offset # Not caught - or $offset < 0 )) { # or badly caught - $found = $sub; - $offset = $line - $subs{$sub}->[0]; - $offset = "+$offset", last SUBS if $offset >= 0; - } - } - if (defined $offset) { - $postponed{$found} = - "break $offset if $dbline{$line}"; - } else { - print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n"; - } - } - } - set_list("PERLDB_POSTPONE", %postponed); - set_list("PERLDB_PRETYPE", @$pretype); - set_list("PERLDB_PRE", @$pre); - set_list("PERLDB_POST", @$post); - set_list("PERLDB_TYPEAHEAD", @typeahead); - $ENV{PERLDB_RESTART} = 1; - #print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS"; - exec $^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS; - print $OUT "exec failed: $!\n"; - last CMD; }; - $cmd =~ /^T$/ && do { - print_trace($OUT, 1); # skip DB - next CMD; }; - $cmd =~ /^W\s*$/ && do { - $trace &= ~2; - @to_watch = @old_watch = (); - next CMD; }; - $cmd =~ /^W\b\s*(.*)/s && do { - push @to_watch, $1; - $evalarg = $1; - my ($val) = &eval; - $val = (defined $val) ? "'$val'" : 'undef' ; - push @old_watch, $val; - $trace |= 2; - next CMD; }; - $cmd =~ /^\/(.*)$/ && do { - $inpat = $1; - $inpat =~ s:([^\\])/$:$1:; - if ($inpat ne "") { - # squelch the sigmangler - local $SIG{__DIE__}; - local $SIG{__WARN__}; - eval '$inpat =~ m'."\a$inpat\a"; - if ($@ ne "") { - print $OUT "$@"; - next CMD; - } - $pat = $inpat; - } - $end = $start; - $incr = -1; - eval ' - for (;;) { - ++$start; - $start = 1 if ($start > $max); - last if ($start == $end); - if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { - if ($slave_editor) { - print $OUT "\032\032$filename:$start:0\n"; - } else { - print $OUT "$start:\t", $dbline[$start], "\n"; - } - last; - } - } '; - print $OUT "/$pat/: not found\n" if ($start == $end); - next CMD; }; - $cmd =~ /^\?(.*)$/ && do { - $inpat = $1; - $inpat =~ s:([^\\])\?$:$1:; - if ($inpat ne "") { - # squelch the sigmangler - local $SIG{__DIE__}; - local $SIG{__WARN__}; - eval '$inpat =~ m'."\a$inpat\a"; - if ($@ ne "") { - print $OUT $@; - next CMD; - } - $pat = $inpat; - } - $end = $start; - $incr = -1; - eval ' - for (;;) { - --$start; - $start = $max if ($start <= 0); - last if ($start == $end); - if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { - if ($slave_editor) { - print $OUT "\032\032$filename:$start:0\n"; - } else { - print $OUT "$start:\t", $dbline[$start], "\n"; - } - last; - } - } '; - print $OUT "?$pat?: not found\n" if ($start == $end); - next CMD; }; - $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { - pop(@hist) if length($cmd) > 1; - $i = $1 ? ($#hist-($2||1)) : ($2||$#hist); - $cmd = $hist[$i]; - print $OUT $cmd, "\n"; - redo CMD; }; - $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do { - &system($1); - next CMD; }; - $cmd =~ /^$rc([^$rc].*)$/ && do { - $pat = "^$1"; - pop(@hist) if length($cmd) > 1; - for ($i = $#hist; $i; --$i) { - last if $hist[$i] =~ /$pat/; - } - if (!$i) { - print $OUT "No such command!\n\n"; - next CMD; - } - $cmd = $hist[$i]; - 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; - $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 =~ 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}) =~ ss\a$k\a(.*)\a$1) { - 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 =~ /^\|/) { - open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); - open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); - } else { - open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); - } - fix_less(); - unless ($piped=open(OUT,$pager)) { - &warn("Can't pipe output to `$pager'"); - if ($pager =~ /^\|/) { - 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") # XXX: lost message - || &warn("Can't restore DB::OUT"); - } - next CMD; - } - $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/ - && ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}); - $selected= select(OUT); - $|= 1; - select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; - $cmd =~ s/^\|+\s*//; - redo PIPE; - }; - # XXX Local variants do not work! - $cmd =~ s/^t\s/\$DB::trace |= 1;\n/; - $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; - $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; - } # PIPE: - $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; - if ($onetimeDump) { - $onetimeDump = undef; - } elsif ($term_pid == $$) { - print $OUT "\n"; - } - } continue { # CMD: - if ($piped) { - if ($pager =~ /^\|/) { - $? = 0; - # we cannot warn here: the handle is missing --tchrist - close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n"; - - # most of the $? crud was coping with broken cshisms - if ($?) { - print SAVEOUT "Pager `$pager' failed: "; - if ($? == -1) { - print SAVEOUT "shell returned -1\n"; - } elsif ($? >> 8) { - print SAVEOUT - ( $? & 127 ) ? " (SIG#".($?&127).")" : "", - ( $? & 128 ) ? " -- core dumped" : "", "\n"; - } else { - print SAVEOUT "status ", ($? >> 8), "\n"; - } - } - - open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); - open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); - $SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch; - # Will stop ignoring SIGPIPE if done like nohup(1) - # does SIGINT but Perl doesn't give us a choice. - } else { - open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); - } - close(SAVEOUT); - select($selected), $selected= "" unless $selected eq ""; - $piped= ""; - } - } # CMD: - $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF - foreach $evalarg (@$post) { - &eval; - } - } # if ($single || $signal) - ($@, $!, $^E, $,, $/, $\, $^W) = @saved; - (); -} - -# The following code may be executed now: -# BEGIN {warn 4} - -sub sub { - my ($al, $ret, @ret) = ""; - if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') { - $al = " for $$sub"; - } - local $stack_depth = $stack_depth + 1; # Protect from non-local exits - $#stack = $stack_depth; - $stack[-1] = $single; - $single &= 1; - $single |= 4 if $stack_depth == $deep; - ($frame & 4 - ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "), - # Why -1? But it works! :-( - print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) - : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame; - if (wantarray) { - @ret = &$sub; - $single |= $stack[$stack_depth--]; - ($frame & 4 - ? ( (print $LINEINFO ' ' x $stack_depth, "out "), - print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) - : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2; - if ($doret eq $stack_depth or $frame & 16) { - my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); - print $fh ' ' x $stack_depth if $frame & 16; - print $fh "list context return from $sub:\n"; - dumpit($fh, \@ret ); - $doret = -2; - } - @ret; - } else { - if (defined wantarray) { - $ret = &$sub; - } else { - &$sub; undef $ret; - }; - $single |= $stack[$stack_depth--]; - ($frame & 4 - ? ( (print $LINEINFO ' ' x $stack_depth, "out "), - print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) - : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2; - if ($doret eq $stack_depth or $frame & 16 and defined wantarray) { - my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); - print $fh (' ' x $stack_depth) if $frame & 16; - print $fh (defined wantarray - ? "scalar context return from $sub: " - : "void context return from $sub\n"); - dumpit( $fh, $ret ) if defined wantarray; - $doret = -2; - } - $ret; - } -} - -sub save { - @saved = ($@, $!, $^E, $,, $/, $\, $^W); - $, = ""; $/ = "\n"; $\ = ""; $^W = 0; -} - -# The following takes its argument via $evalarg to preserve current @_ - -sub eval { - # 'my' would make it visible from user code - # but so does local! --tchrist - local @res; - { - local $otrace = $trace; - local $osingle = $single; - local $od = $^D; - { ($evalarg) = $evalarg =~ /(.*)/s; } - @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug - $trace = $otrace; - $single = $osingle; - $^D = $od; - } - my $at = $@; - local $saved[0]; # Preserve the old value of $@ - eval { &DB::save }; - if ($at) { - print $OUT $at; - } elsif ($onetimeDump eq 'dump') { - dumpit($OUT, \@res); - } elsif ($onetimeDump eq 'methods') { - methods($res[0]); - } - @res; -} - -sub postponed_sub { - my $subname = shift; - if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) { - my $offset = $1 || 0; - # Filename below can contain ':' - my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/); - if ($i) { - $i += $offset; - local *dbline = $main::{'_<' . $file}; - local $^W = 0; # != 0 is magical below - $had_breakpoints{$file} |= 1; - my $max = $#dbline; - ++$i until $dbline[$i] != 0 or $i >= $max; - $dbline{$i} = delete $postponed{$subname}; - } else { - print $OUT "Subroutine $subname not found.\n"; - } - return; - } - elsif ($postponed{$subname} eq 'compile') { $signal = 1 } - #print $OUT "In postponed_sub for `$subname'.\n"; -} - -sub postponed { - if ($ImmediateStop) { - $ImmediateStop = 0; - $signal = 1; - } - return &postponed_sub - unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled. - # Cannot be done before the file is compiled - local *dbline = shift; - my $filename = $dbline; - $filename =~ s/^_<//; - $signal = 1, print $OUT "'$filename' loaded...\n" - if $break_on_load{$filename}; - print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame; - return unless $postponed_file{$filename}; - $had_breakpoints{$filename} |= 1; - #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic - my $key; - for $key (keys %{$postponed_file{$filename}}) { - $dbline{$key} = ${$postponed_file{$filename}}{$key}; - } - delete $postponed_file{$filename}; -} - -sub dumpit { - local ($savout) = select(shift); - my $osingle = $single; - my $otrace = $trace; - $single = $trace = 0; - local $frame = 0; - local $doret = -2; - unless (defined &main::dumpValue) { - do 'dumpvar.pl'; - } - if (defined &main::dumpValue) { - &main::dumpValue(shift); - } else { - print $OUT "dumpvar.pl not available.\n"; - } - $single = $osingle; - $trace = $otrace; - select ($savout); -} - -# Tied method do not create a context, so may get wrong message: - -sub print_trace { - my $fh = shift; - my @sub = dump_trace($_[0] + 1, $_[1]); - my $short = $_[2]; # Print short report, next one for sub name - my $s; - for ($i=0; $i <= $#sub; $i++) { - last if $signal; - local $" = ', '; - my $args = defined $sub[$i]{args} - ? "(@{ $sub[$i]{args} })" - : '' ; - $args = (substr $args, 0, $maxtrace - 3) . '...' - if length $args > $maxtrace; - my $file = $sub[$i]{file}; - $file = $file eq '-e' ? $file : "file `$file'" unless $short; - $s = $sub[$i]{sub}; - $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace; - if ($short) { - my $sub = @_ >= 4 ? $_[3] : $s; - print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n"; - } else { - print $fh "$sub[$i]{context} = $s$args" . - " called from $file" . - " line $sub[$i]{line}\n"; - } - } -} - -sub dump_trace { - my $skip = shift; - my $count = shift || 1e9; - $skip++; - $count += $skip; - my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context); - my $nothard = not $frame & 8; - local $frame = 0; # Do not want to trace this. - my $otrace = $trace; - $trace = 0; - for ($i = $skip; - $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i); - $i++) { - @a = (); - for $arg (@args) { - my $type; - if (not defined $arg) { - push @a, "undef"; - } elsif ($nothard and tied $arg) { - push @a, "tied"; - } elsif ($nothard and $type = ref $arg) { - push @a, "ref($type)"; - } else { - local $_ = "$arg"; # Safe to stringify now - should not call f(). - s/([\'\\])/\\$1/g; - s/(.*)/'$1'/s - unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; - s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; - s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; - push(@a, $_); - } - } - $context = $context ? '@' : (defined $context ? "\$" : '.'); - $args = $h ? [@a] : undef; - $e =~ s/\n\s*\;\s*\Z// if $e; - $e =~ s/([\\\'])/\\$1/g if $e; - if ($r) { - $sub = "require '$e'"; - } elsif (defined $r) { - $sub = "eval '$e'"; - } elsif ($sub eq '(eval)') { - $sub = "eval {...}"; - } - push(@sub, {context => $context, sub => $sub, args => $args, - file => $file, line => $line}); - last if $signal; - } - $trace = $otrace; - @sub; -} - -sub action { - my $action = shift; - while ($action =~ s/\\$//) { - #print $OUT "+ "; - #$action .= "\n"; - $action .= &gets; - } - $action; -} - -sub 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 { - &readline("cont: "); -} - -sub system { - # We save, change, then restore STDIN and STDOUT to avoid fork() since - # 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); - - - # 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; - eval { require Term::ReadLine } or die $@; - if ($notty) { - if ($tty) { - open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!"; - open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!"; - $IN = \*IN; - $OUT = \*OUT; - my $sel = select($OUT); - $| = 1; - select($sel); - } else { - eval "require Term::Rendezvous;" or die; - my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; - my $term_rv = new Term::Rendezvous $rv; - $IN = $term_rv->IN; - $OUT = $term_rv->OUT; - } - } - if (!$rl) { - $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; - } else { - $term = new Term::ReadLine 'perldb', $IN, $OUT; - - $rl_attribs = $term->Attribs; - $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}' - if defined $rl_attribs->{basic_word_break_characters} - and index($rl_attribs->{basic_word_break_characters}, ":") == -1; - $rl_attribs->{special_prefixes} = '$@&%'; - $rl_attribs->{completer_word_break_characters} .= '$@&%'; - $rl_attribs->{completion_function} = \&db_complete; - } - $LINEINFO = $OUT unless defined $LINEINFO; - $lineinfo = $console unless defined $lineinfo; - $term->MinLine(2); - if ($term->Features->{setHistory} and "@hist" ne "?") { - $term->SetHistory(@hist); - } - ornaments($ornaments) if defined $ornaments; - $term_pid = $$; -} - -sub resetterm { # We forked, so we need a different TTY - $term_pid = $$; - if (defined &get_fork_TTY) { - &get_fork_TTY; - } elsif (not defined $fork_TTY - and defined $ENV{TERM} and $ENV{TERM} eq 'xterm' - and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) { - # Possibly _inside_ XTERM - open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\ - sleep 10000000' |]; - $fork_TTY = <XT>; - chomp $fork_TTY; - } - if (defined $fork_TTY) { - TTY($fork_TTY); - undef $fork_TTY; - } else { - print_help(<<EOP); -I<#########> Forked, but do not know how to change a B<TTY>. I<#########> - Define B<\$DB::fork_TTY> - - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>. - The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use. - On I<UNIX>-like systems one can get the name of a I<TTY> for the given window - by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>. -EOP - } -} - -sub readline { - local $.; - if (@typeahead) { - my $left = @typeahead; - my $got = shift @typeahead; - print $OUT "auto(-$left)", shift, $got, "\n"; - $term->AddHistory($got) - if length($got) > 1 and defined $term->Features->{addHistory}; - return $got; - } - local $frame = 0; - local $doret = -2; - 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, $val)= @_; - $val = option_val($opt,'N/A'); - $val =~ s/([\\\'])/\\$1/g; - printf $OUT "%20s = '%s'\n", $opt, $val; -} - -sub option_val { - my ($opt, $default)= @_; - my $val; - if (defined $optionVars{$opt} - and defined ${$optionVars{$opt}}) { - $val = ${$optionVars{$opt}}; - } elsif (defined $optionAction{$opt} - and defined &{$optionAction{$opt}}) { - $val = &{$optionAction{$opt}}(); - } elsif (defined $optionAction{$opt} - and not defined $option{$opt} - or defined $optionVars{$opt} - and not defined ${$optionVars{$opt}}) { - $val = $default; - } else { - $val = $option{$opt}; - } - $val -} - -sub parse_options { - local($_)= @_; - # 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 $sep) { - print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last - if /^\S/; - #&dump_option($opt); - } elsif ($sep !~ /\S/) { - $val_defaulted = 1; - $val = "1"; # this is an evil default; make 'em set it! - } elsif ($sep eq "=") { - - 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 = $1) =~ s/\\([\\$end])/$1/g; - } - - 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; - for $i (0 .. $#list) { - $val = $list[$i]; - $val =~ s/\\/\\\\/g; - $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg; - $ENV{"${stem}_$i"} = $val; - } -} - -sub get_list { - my $stem = shift; - my @list; - my $n = delete $ENV{"${stem}_n"}; - my $val; - for $i (0 .. $n - 1) { - $val = delete $ENV{"${stem}_$i"}; - $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; - push @list, $val; - } - @list; -} - -sub catch { - $signal = 1; - return; # Put nothing on the stack - malloc/free land! -} - -sub warn { - my($msg)= join("",@_); - $msg .= ": $!\n" unless $msg =~ /\n$/; - print $OUT $msg; -} - -sub TTY { - if (@_ and $term and $term->Features->{newTTY}) { - my ($in, $out) = shift; - if ($in =~ /,/) { - ($in, $out) = split /,/, $in, 2; - } else { - $out = $in; - } - open IN, $in or die "cannot open `$in' for read: $!"; - open OUT, ">$out" or die "cannot open `$out' for write: $!"; - $term->newTTY(\*IN, \*OUT); - $IN = \*IN; - $OUT = \*OUT; - return $tty = $in; - } elsif ($term and @_) { - &warn("Too late to set TTY, enabled on next `R'!\n"); - } - $tty = shift if @_; - $tty or $console; -} - -sub noTTY { - if ($term) { - &warn("Too late to set noTTY, enabled on next `R'!\n") if @_; - } - $notty = shift if @_; - $notty; -} - -sub ReadLine { - if ($term) { - &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_; - } - $rl = shift if @_; - $rl; -} - -sub RemotePort { - if ($term) { - &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_; - } - $remoteport = shift if @_; - $remoteport; -} - -sub tkRunning { - if (${$term->Features}{tkRunning}) { - return $term->tkRunning(@_); - } else { - print $OUT "tkRunning not supported by current ReadLine package.\n"; - 0; - } -} - -sub NonStop { - if ($term) { - &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_; - } - $runnonstop = shift if @_; - $runnonstop; -} - -sub pager { - if (@_) { - $pager = shift; - $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; - } - $pager; -} - -sub shellBang { - if (@_) { - $sh = quotemeta shift; - $sh .= "\\b" if $sh =~ /\w$/; - } - $psh = $sh; - $psh =~ s/\\b$//; - $psh =~ s/\\(.)/$1/g; - &sethelp; - $psh; -} - -sub ornaments { - if (defined $term) { - local ($warnLevel,$dieLevel) = (0, 1); - return '' unless $term->Features->{ornaments}; - eval { $term->ornaments(@_) } || ''; - } else { - $ornaments = shift; - } -} - -sub recallCommand { - if (@_) { - $rc = quotemeta shift; - $rc .= "\\b" if $rc =~ /\w$/; - } - $prc = $rc; - $prc =~ s/\\b$//; - $prc =~ s/\\(.)/$1/g; - &sethelp; - $prc; -} - -sub LineInfo { - return $lineinfo unless @_; - $lineinfo = shift; - my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; - $slave_editor = ($stream =~ /^\|/); - open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); - $LINEINFO = \*LINEINFO; - my $save = select($LINEINFO); - $| = 1; - select($save); - $lineinfo; -} - -sub list_versions { - my %version; - my $file; - for (keys %INC) { - $file = $_; - s,\.p[lm]$,,i ; - s,/,::,g ; - s/^perl5db$/DB/; - s/^Term::ReadLine::readline$/readline/; - if (defined ${ $_ . '::VERSION' }) { - $version{$file} = "${ $_ . '::VERSION' } from "; - } - $version{$file} .= $INC{$file}; - } - 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<n> [I<expr>] Next, steps over subroutine calls [in I<expr>]. -<B<CR>> Repeat last B<n> or B<s> command. -B<r> Return from current subroutine. -B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint - at the specified position. -B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>. -B<l> I<min>B<->I<max> List lines I<min> through I<max>. -B<l> I<line> List single I<line>. -B<l> I<subname> List first window of lines from subroutine. -B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>. -B<l> List next window of lines. -B<-> List previous window of lines. -B<w> [I<line>] List window around I<line>. -B<.> Return to the executed line. -B<f> I<filename> Switch to viewing I<filename>. File must be already loaded. - I<filename> may be either the full name of the file, or a regular - expression matching the full file name: - B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file. - Evals (with saved bodies) are considered to be filenames: - B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval - (in the order of execution). -B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional. -B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional. -B<L> List all breakpoints and actions. -B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>. -B<t> Toggle trace mode. -B<t> I<expr> Trace through execution of I<expr>. -B<b> [I<line>] [I<condition>] - Set breakpoint; I<line> defaults to the current execution line; - I<condition> breaks if it evaluates to true, defaults to '1'. -B<b> I<subname> [I<condition>] - Set breakpoint at first line of subroutine. -B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>. -B<b> B<load> I<filename> Set breakpoint on `require'ing the given file. -B<b> B<postpone> I<subname> [I<condition>] - Set breakpoint at first line of subroutine after - it is compiled. -B<b> B<compile> I<subname> - Stop after the subroutine is compiled. -B<d> [I<line>] Delete the breakpoint for I<line>. -B<D> Delete all breakpoints. -B<a> [I<line>] I<command> - Set an action to be done before the I<line> is executed; - I<line> defaults to the current execution line. - Sequence is: check for breakpoint/watchpoint, print line - if necessary, do action, prompt user if necessary, - execute line. -B<a> [I<line>] Delete the action for I<line>. -B<A> Delete all actions. -B<W> I<expr> Add a global watch-expression. -B<W> Delete all watch-expressions. -B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current). - Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps. -B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\". -B<x> I<expr> Evals expression in list context, dumps the result. -B<m> I<expr> Evals expression in list context, prints methods callable - on the first element of the result. -B<m> I<class> Prints methods callable via the given class. - -B<<> ? List Perl commands to run before each prompt. -B<<> I<expr> Define Perl command to run before each prompt. -B<<<> I<expr> Add to the list of Perl commands to run before each prompt. -B<>> ? List Perl commands to run after each prompt. -B<>> I<expr> Define Perl command to run after each prompt. -B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt. -B<{> I<db_command> Define debugger command to run before each prompt. -B<{> ? List debugger commands to run before each prompt. -B<<> I<expr> Define Perl command to run before each prompt. -B<{{> I<db_command> Add to the list of debugger commands to run before each prompt. -B<$prc> I<number> Redo a previous command (default previous command). -B<$prc> I<-number> Redo number'th-to-last command. -B<$prc> I<pattern> Redo last command that started with I<pattern>. - See 'B<O> I<recallCommand>' too. -B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" - . ( $rc eq $sh ? "" : " -B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " - See 'B<O> I<shellBang>' too. -B<H> I<-number> Display last number commands (default all). -B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package. -B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager. -B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well. -B<\=> [I<alias> I<value>] Define a command alias, or list current aliases. -I<command> Execute as a perl statement in current package. -B<v> Show versions of loaded modules. -B<R> Pure-man-restart of debugger, some of debugger state - and command-line options may be lost. - Currently the following setting are preserved: - history, breakpoints and actions, debugger B<O>ptions - and the following command-line options: I<-w>, I<-I>, I<-e>. - -B<O> [I<opt>] ... Set boolean option to true -B<O> [I<opt>B<?>] Query options -B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ... - Set options. Use quotes in spaces in value. - I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell; - I<pager> program for output of \"|cmd\"; - I<tkRunning> run Tk while prompting (with ReadLine); - I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity; - I<inhibit_exit> Allows stepping off the end of the script. - I<ImmediateStop> Debugger should stop as early as possible. - I<RemotePort> Remote hostname:port for remote debugging - The following options affect what happens with B<V>, B<X>, and B<x> commands: - I<arrayDepth>, I<hashDepth> print only first N elements ('' for all); - I<compactDump>, I<veryCompact> change style of array and hash dump; - I<globPrint> whether to print contents of globs; - I<DumpDBFiles> dump arrays holding debugged files; - I<DumpPackages> dump symbol tables of packages; - I<DumpReused> dump contents of \"reused\" addresses; - I<quote>, I<HighBit>, I<undefPrint> change style of string dump; - I<bareStringify> Do not print the overload-stringified value; - Other options include: - I<PrintRet> affects printing of return value after B<r> command, - I<frame> affects printing messages on entry and exit from subroutines. - I<AutoTrace> affects printing messages on every possible breaking point. - I<maxTraceLen> gives maximal length of evals/args listed in stack trace. - I<ornaments> affects screen appearance of the command line. - During startup options are initialized from \$ENV{PERLDB_OPTS}. - You can put additional initialization options I<TTY>, I<noTTY>, - I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use - `B<R>' after you set them). - -B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction. -B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page. -B<h h> Summary of debugger commands. -B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the - named Perl I<manpage>, or on B<$doccmd> itself if omitted. - Set B<\$DB::doccmd> to change viewer. - -Type `|h' for a paged display if this was too hard to read. - -"; # Fix balance of vi % matching: } }} - - $summary = <<"END_SUM"; -I<List/search source lines:> I<Control script execution:> - B<l> [I<ln>|I<sub>] List source code B<T> Stack trace - B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr] - B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs - B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s> - B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine - B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position -I<Debugger controls:> B<L> List break/watch/actions - B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr] - B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint - B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints - B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line - B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression - B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch - B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess - B<q> or B<^D> Quit B<R> Attempt a restart -I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr> - B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods. - B<p> I<expr> Print expression (uses script's current package). - B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern - B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern. - B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\". -For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs. -END_SUM - # ')}}; # Fix balance of vi % matching -} - -sub print_help { - local $_ = shift; - - # Restore proper alignment destroyed by eeevil I<> and B<> - # ornaments: A pox on both their houses! - # - # A help command will have everything up to and including - # the first tab sequence paddeed into a field 16 (or if indented 20) - # wide. If it's wide than that, an extra space will be added. - s{ - ^ # only matters at start of line - ( \040{4} | \t )* # some subcommands are indented - ( < ? # so <CR> works - [BI] < [^\t\n] + ) # find an eeevil ornament - ( \t+ ) # original separation, discarded - ( .* ) # this will now start (no earlier) than - # column 16 - } { - my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4); - my $clean = $command; - $clean =~ s/[BI]<([^>]*)>/$1/g; - # replace with this whole string: - (length($leadwhite) ? " " x 4 : "") - . $command - . ((" " x (16 + (length($leadwhite) ? 4 : 0) - length($clean))) || " ") - . $text; - - }mgex; - - s{ # handle bold ornaments - B < ( [^>] + | > ) > - } { - $Term::ReadLine::TermCap::rl_term_set[2] - . $1 - . $Term::ReadLine::TermCap::rl_term_set[3] - }gex; - - s{ # handle italic ornaments - I < ( [^>] + | > ) > - } { - $Term::ReadLine::TermCap::rl_term_set[0] - . $1 - . $Term::ReadLine::TermCap::rl_term_set[1] - }gex; - - print $OUT $_; -} - -sub fix_less { - return if defined $ENV{LESS} && $ENV{LESS} =~ /r/; - my $is_less = $pager =~ /\bless\b/; - if ($pager =~ /\bmore\b/) { - my @st_more = stat('/usr/bin/more'); - my @st_less = stat('/usr/bin/less'); - $is_less = @st_more && @st_less - && $st_more[0] == $st_less[0] - && $st_more[1] == $st_less[1]; - } - # changes environment! - $ENV{LESS} .= 'r' if $is_less; -} - -sub diesignal { - local $frame = 0; - local $doret = -2; - $SIG{'ABRT'} = 'DEFAULT'; - kill 'ABRT', $$ if $panic++; - if (defined &Carp::longmess) { - local $SIG{__WARN__} = ''; - local $Carp::CarpLevel = 2; # mydie + confess - &warn(Carp::longmess("Signal @_")); - } - else { - print $DB::OUT "Got signal @_\n"; - } - kill 'ABRT', $$; -} - -sub dbwarn { - local $frame = 0; - local $doret = -2; - local $SIG{__WARN__} = ''; - local $SIG{__DIE__} = ''; - eval { require Carp } if defined $^S; # If error/warning during compilation, - # require may be broken. - warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"), - return unless defined &Carp::longmess; - my ($mysingle,$mytrace) = ($single,$trace); - $single = 0; $trace = 0; - my $mess = Carp::longmess(@_); - ($single,$trace) = ($mysingle,$mytrace); - &warn($mess); -} - -sub dbdie { - local $frame = 0; - local $doret = -2; - local $SIG{__DIE__} = ''; - local $SIG{__WARN__} = ''; - my $i = 0; my $ineval = 0; my $sub; - if ($dieLevel > 2) { - local $SIG{__WARN__} = \&dbwarn; - &warn(@_); # Yell no matter what - return; - } - if ($dieLevel < 2) { - die @_ if $^S; # in eval propagate - } - eval { require Carp } if defined $^S; # If error/warning during compilation, - # require may be broken. - - die(@_, "\nCannot print stack trace, load with -MCarp option to see stack") - unless defined &Carp::longmess; - - # We do not want to debug this chunk (automatic disabling works - # inside DB::DB, but not in Carp). - my ($mysingle,$mytrace) = ($single,$trace); - $single = 0; $trace = 0; - my $mess = Carp::longmess(@_); - ($single,$trace) = ($mysingle,$mytrace); - die $mess; -} - -sub warnLevel { - if (@_) { - $prevwarn = $SIG{__WARN__} unless $warnLevel; - $warnLevel = shift; - if ($warnLevel) { - $SIG{__WARN__} = \&DB::dbwarn; - } else { - $SIG{__WARN__} = $prevwarn; - } - } - $warnLevel; -} - -sub dieLevel { - if (@_) { - $prevdie = $SIG{__DIE__} unless $dieLevel; - $dieLevel = shift; - if ($dieLevel) { - $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2; - #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2; - print $OUT "Stack dump during die enabled", - ( $dieLevel == 1 ? " outside of evals" : ""), ".\n" - if $I_m_init; - print $OUT "Dump printed too.\n" if $dieLevel > 2; - } else { - $SIG{__DIE__} = $prevdie; - print $OUT "Default die handler restored.\n"; - } - } - $dieLevel; -} - -sub signalLevel { - if (@_) { - $prevsegv = $SIG{SEGV} unless $signalLevel; - $prevbus = $SIG{BUS} unless $signalLevel; - $signalLevel = shift; - if ($signalLevel) { - $SIG{SEGV} = \&DB::diesignal; - $SIG{BUS} = \&DB::diesignal; - } else { - $SIG{SEGV} = $prevsegv; - $SIG{BUS} = $prevbus; - } - } - $signalLevel; -} - -sub CvGV_name { - my $in = shift; - my $name = CvGV_name_or_bust($in); - defined $name ? $name : $in; -} - -sub CvGV_name_or_bust { - my $in = shift; - return if $skipCvGV; # Backdoor to avoid problems if XS broken... - $in = \&$in; # Hard reference... - eval {require Devel::Peek; 1} or return; - my $gv = Devel::Peek::CvGV($in) or return; - *$gv{PACKAGE} . '::' . *$gv{NAME}; -} - -sub find_sub { - my $subr = shift; - $sub{$subr} or do { - return unless defined &$subr; - my $name = CvGV_name_or_bust($subr); - my $data; - $data = $sub{$name} if defined $name; - return $data if defined $data; - - # Old stupid way... - $subr = \&$subr; # Hard reference - my $s; - for (keys %sub) { - $s = $_, last if $subr eq \&$_; - } - $sub{$s} if $s; - } -} - -sub methods { - my $class = shift; - $class = ref $class if ref $class; - local %seen; - local %packs; - methods_via($class, '', 1); - methods_via('UNIVERSAL', 'UNIVERSAL', 0); -} - -sub methods_via { - my $class = shift; - return if $packs{$class}++; - my $prefix = shift; - my $prepend = $prefix ? "via $prefix: " : ''; - my $name; - for $name (grep {defined &{${"${class}::"}{$_}}} - sort keys %{"${class}::"}) { - next if $seen{ $name }++; - print $DB::OUT "$prepend$name\n"; - } - return unless shift; # Recurse? - for $name (@{"${class}::ISA"}) { - $prepend = $prefix ? $prefix . " -> $name" : $name; - methods_via($name, $prepend, 1); - } -} - -sub setman { - $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s - ? "man" # O Happy Day! - : "perldoc"; # Alas, poor unfortunates -} - -sub runman { - my $page = shift; - unless ($page) { - &system("$doccmd $doccmd"); - return; - } - # this way user can override, like with $doccmd="man -Mwhatever" - # or even just "man " to disable the path check. - unless ($doccmd eq 'man') { - &system("$doccmd $page"); - return; - } - - $page = 'perl' if lc($page) eq 'help'; - - require Config; - my $man1dir = $Config::Config{'man1dir'}; - my $man3dir = $Config::Config{'man3dir'}; - for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ } - my $manpath = ''; - $manpath .= "$man1dir:" if $man1dir =~ /\S/; - $manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir; - chop $manpath if $manpath; - # harmless if missing, I figure - my $oldpath = $ENV{MANPATH}; - $ENV{MANPATH} = $manpath if $manpath; - my $nopathopt = $^O =~ /dunno what goes here/; - if (system($doccmd, - # I just *know* there are men without -M - (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), - split ' ', $page) ) - { - unless ($page =~ /^perl\w/) { - if (grep { $page eq $_ } qw{ - 5004delta 5005delta amiga api apio book boot bot call compile - cygwin data dbmfilter debug debguts delta diag doc dos dsc embed - faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork - form func guts hack hist hpux intern ipc lexwarn locale lol mod - modinstall modlib number obj op opentut os2 os390 pod port - ref reftut run sec style sub syn thrtut tie toc todo toot tootc - trap unicode var vms win32 xs xstut - }) - { - $page =~ s/^/perl/; - system($doccmd, - (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), - $page); - } - } - } - if (defined $oldpath) { - $ENV{MANPATH} = $manpath; - } else { - delete $ENV{MANPATH}; - } -} - -# The following BEGIN is very handy if debugger goes havoc, debugging debugger? - -BEGIN { # This does not compile, alas. - $IN = \*STDIN; # For bugs before DB::OUT has been opened - $OUT = \*STDERR; # For errors before DB::OUT has been opened - $sh = '!'; - $rc = ','; - @hist = ('?'); - $deep = 100; # warning if stack gets this deep - $window = 10; - $preview = 3; - $sub = ''; - $SIG{INT} = \&DB::catch; - # This may be enabled to debug debugger: - #$warnLevel = 1 unless defined $warnLevel; - #$dieLevel = 1 unless defined $dieLevel; - #$signalLevel = 1 unless defined $signalLevel; - - $db_stop = 0; # Compiler warning - $db_stop = 1 << 30; - $level = 0; # Level of recursive debugging - # @stack and $doret are needed in sub sub, which is called for DB::postponed. - # Triggers bug (?) in perl is we postpone this until runtime: - @postponed = @stack = (0); - $stack_depth = 0; # Localized $#stack - $doret = -2; - $frame = 0; -} - -BEGIN {$^W = $ini_warn;} # Switch warnings back - -#use Carp; # This did break, left for debuggin - -sub db_complete { - # Specific code for b c l V m f O, &blah, $blah, @blah, %blah - my($text, $line, $start) = @_; - my ($itext, $search, $prefix, $pack) = - ($text, "^\Q${'package'}::\E([^:]+)\$"); - - return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines - (map { /$search/ ? ($1) : () } keys %sub) - if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/; - return sort grep /^\Q$text/, values %INC # files - if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/; - return sort map {($_, db_complete($_ . "::", "V ", 2))} - grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages - if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/; - return sort map {($_, db_complete($_ . "::", "V ", 2))} - grep !/^main::/, - grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'} - # packages - if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ - and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1; - if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files - # We may want to complete to (eval 9), so $text may be wrong - $prefix = length($1) - length($text); - $text = $1; - return sort - map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0 - } - if ((substr $text, 0, 1) eq '&') { # subroutines - $text = substr $text, 1; - $prefix = "&"; - return sort map "$prefix$_", - grep /^\Q$text/, - (keys %sub), - (map { /$search/ ? ($1) : () } - keys %sub); - } - if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package - $pack = ($1 eq 'main' ? '' : $1) . '::'; - $prefix = (substr $text, 0, 1) . $1 . '::'; - $text = $2; - my @out - = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ; - if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { - return db_complete($out[0], $line, $start); - } - return sort @out; - } - if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main) - $pack = ($package eq 'main' ? '' : $package) . '::'; - $prefix = substr $text, 0, 1; - $text = substr $text, 1; - my @out = map "$prefix$_", grep /^\Q$text/, - (grep /^_?[a-zA-Z]/, keys %$pack), - ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ; - if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { - return db_complete($out[0], $line, $start); - } - return sort @out; - } - if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space - my @out = grep /^\Q$text/, @options; - my $val = option_val($out[0], undef); - my $out = '? '; - if (not defined $val or $val =~ /[\n\r]/) { - # Can do nothing better - } elsif ($val =~ /\s/) { - my $found; - foreach $l (split //, qq/\"\'\#\|/) { - $out = "$l$val$l ", last if (index $val, $l) == -1; - } - } else { - $out = "=$val "; - } - # Default to value if one completion, to question if many - $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? '); - return sort @out; - } - return $term->filename_list($text); # filenames -} - -sub end_report { - print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n" -} - -END { - $finished = 1 if $inhibit_exit; # So that some keys may be disabled. - $fall_off_end = 1 unless $inhibit_exit; - # Do not stop in at_exit() and destructors on exit: - $DB::single = !$fall_off_end && !$runnonstop; - DB::fake::at_exit() unless $fall_off_end or $runnonstop; -} - -package DB::fake; - -sub at_exit { - "Debugged program terminated. Use `q' to quit or `R' to restart."; -} - -package DB; # Do not trace this 1; below! - -1; |
