X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fperl5db.pl;h=5c8d2727b72506d2c3f6999246d84b0722a40f0d;hb=ccd13d1e2262a17c4c370c99cf06a24ebb84a875;hp=f6e8ecae473ad61511f745e59c26e622b06fc27e;hpb=d338d6fe1dfdfdbc07c2d6d7a2a4ae7db5887d93;p=p5sagit%2Fp5-mst-13.2.git diff --git a/lib/perl5db.pl b/lib/perl5db.pl index f6e8eca..5c8d272 100644 --- a/lib/perl5db.pl +++ b/lib/perl5db.pl @@ -1,8 +1,8 @@ package DB; -# Debugger for Perl 5.001m; perl5db.pl patch level: +# Debugger for Perl 5.00x; perl5db.pl patch level: -$header = 'perl5db.pl patch level 0.93'; +$header = 'perl5db.pl patch level 0.94'; # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) # Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl @@ -64,8 +64,10 @@ $header = 'perl5db.pl patch level 0.93'; # reset LineInfo to something "interactive"!) # +# Needed for the statement after exec(): -local($^W) = 0; +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, @@ -78,8 +80,13 @@ warn ( # Do not ;-) $dumpvar::usageOnly, @ARGS, $Carp::CarpLevel, + $panic, + $first_time, ) if 0; +# Command-line + PERLLIB: +@ini_INC = @INC; + # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! $trace = $signal = $single = 0; # Uninitialized warning suppression @@ -158,6 +165,24 @@ if (defined $ENV{PERLDB_OPTS}) { parse_options($ENV{PERLDB_OPTS}); } +if (exists $ENV{PERLDB_RESTART}) { + delete $ENV{PERLDB_RESTART}; + # $restart = 1; + @hist = get_list('PERLDB_HIST'); + my @visited = get_list("PERLDB_VISITED"); + for (0 .. $#visited) { + %{$postponed{$visited[$_]}} = get_list("PERLDB_FILE_$_"); + } + my %opt = get_list("PERLDB_OPT"); + my ($opt,$val); + while (($opt,$val) = each %opt) { + $val =~ s/[\\\']/\\$1/g; + parse_options("$opt'$val'"); + } + @INC = get_list("PERLDB_INC"); + @ini_INC = @INC; +} + if ($notty) { $runnonstop = 1; } else { @@ -226,16 +251,23 @@ if (defined &afterinit) { # May be defined in $rcfile ############################################################ Subroutines -# The following code may be executed now, but gives FPE later: -# BEGIN {warn 5} - sub DB { - if ($runnonstop) { # Disable until signal + unless ($first_time++) { # Do when-running init + if ($runnonstop) { # Disable until signal for ($i=0; $i <= $#stack; ) { $stack[$i++] &= ~1; } - $single = $runnonstop = 0; # Once only + $single = 0; return; + } + # Define a subroutine in which we will stop +# eval <<'EOE'; +# sub at_end::db {"Debuggee terminating";} +# END { +# $DB::step = 1; +# print $OUT "Debuggee terminating.\n"; +# &at_end::db;} +# EOE } &save; if ($doret) { @@ -247,14 +279,16 @@ sub DB { } } ($package, $filename, $line) = caller; + $filename_ini = $filename; $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . "package $package;"; # this won't let them modify, alas local(*dbline) = "::_<$filename"; + install_breakpoints($filename) unless $visited{$filename}++; $max = $#dbline; if (($stop,$action) = split(/\0/,$dbline{$line})) { if ($stop eq '1') { $signal |= 1; - } else { + } elsif ($stop) { $evalarg = "\$DB::signal |= do {$stop;}"; &eval; $dbline{$line} =~ s/;9($|\0)/$1/; } @@ -262,24 +296,29 @@ sub DB { if ($single || $trace || $signal) { $term || &setterm; if ($emacs) { - print $LINEINFO "\032\032$filename:$line:0\n"; + $position = "\032\032$filename:$line:0\n"; + print $LINEINFO $position; } else { $sub =~ s/\'/::/; $prefix = $sub =~ /::/ ? "" : "${'package'}::"; $prefix .= "$sub($filename:"; $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); if (length($prefix) > 30) { - print $LINEINFO "$prefix$line):\n$line:\t", $dbline[$line], $after; + $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; + print $LINEINFO $position; $prefix = ""; $infix = ":\t"; } else { $infix = "):\t"; - print $LINEINFO "$prefix$line$infix",$dbline[$line], $after; + $position = "$prefix$line$infix$dbline[$line]$after"; + print $LINEINFO $position; } for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); - print $LINEINFO "$prefix$i$infix", $dbline[$i], $after; + $incr_pos = "$prefix$i$infix$dbline[$i]$after"; + print $LINEINFO $incr_pos; + $position .= $incr_pos; } } } @@ -292,14 +331,14 @@ sub DB { $start = $line; CMD: while (($term || &setterm), - defined ($cmd=$term->readline(" DB" . ('<' x $level) . - ($#hist+1) . ('>' x $level) . - " "))) { - { # <-- Do we know what this brace is for? + defined ($cmd=&readline(" DB" . ('<' x $level) . + ($#hist+1) . ('>' x $level) . + " "))) { + #{ # <-- Do we know what this brace is for? $single = 0; $signal = 0; $cmd =~ s/\\$/\n/ && do { - $cmd .= $term->readline(" cont: "); + $cmd .= &readline(" cont: "); redo CMD; }; $cmd =~ /^q$/ && exit 0; @@ -343,6 +382,7 @@ sub DB { @vars = split(' ',$2); do 'dumpvar.pl' unless defined &main::dumpvar; if (defined &main::dumpvar) { + local $frame = 0; &main::dumpvar($packname,@vars); } else { print $OUT "dumpvar.pl not available.\n"; @@ -369,6 +409,7 @@ sub DB { next CMD; } elsif ($file ne $filename) { *dbline = "::_<$file"; + $visited{$file}++; $max = $#dbline; $filename = $file; $start = 1; @@ -384,6 +425,7 @@ sub DB { $file = join(':', @pieces); if ($file ne $filename) { *dbline = "::_<$file"; + $visited{$file}++; $max = $#dbline; $filename = $file; } @@ -396,10 +438,18 @@ sub DB { print $OUT "Subroutine $subname not found.\n"; next CMD; } }; + $cmd =~ /^\.$/ && do { + $start = $line; + $filename = $filename_ini; + *dbline = "::_<$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 { $incr = $window - 1; @@ -412,8 +462,8 @@ sub DB { $incr = $2; $incr = $window - 1 unless $incr; $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^l\b\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { - $end = (!$2) ? $max : ($4 ? $4 : $2); + $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 '.'; @@ -423,7 +473,14 @@ sub DB { $i = $end; } else { for (; $i <= $end; $i++) { - print $OUT "$i:\t", $dbline[$i]; + ($stop,$action) = split(/\0/, $dbline{$i}); + $arrow = ($i==$line + and $filename eq $filename_ini) + ? '==>' + : ':' ; + $arrow .= 'b' if $stop; + $arrow .= 'a' if $action; + print $OUT "$i$arrow\t", $dbline[$i]; last if $signal; } } @@ -467,6 +524,7 @@ sub DB { if ($i) { $filename = $file; *dbline = "::_<$filename"; + $visited{$filename}++; $max = $#dbline; ++$i while $dbline[$i] == 0 && $i < $max; $dbline{$i} =~ s/^[^\0]*/$cond/; @@ -527,8 +585,22 @@ sub DB { $single = 1; $laststep = $cmd; last CMD; }; - $cmd =~ /^c\b\s*(\d*)\s*$/ && do { + $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { $i = $1; + if ($i =~ /\D/) { # subroutine name + ($file,$i) = ($sub{$i} =~ /^(.*):(.*)$/); + $i += 0; + if ($i) { + $filename = $file; + *dbline = "::_<$filename"; + $visited{$filename}++; + $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"; @@ -544,6 +616,40 @@ sub DB { $stack[$#stack] |= 1; $doret = 1; last CMD; }; + $cmd =~ /^R$/ && do { + print $OUT "Warning: a lot of 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 @visited = keys %visited; + set_list("PERLDB_VISITED", @visited); + set_list("PERLDB_OPT", %option); + for (0 .. $#visited) { + *dbline = "::_<$visited[$_]"; + set_list("PERLDB_FILE_$_", %dbline); + } + $ENV{PERLDB_RESTART} = 1; + #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS"; + exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS; + print $OUT "exec failed: $!\n"; + last CMD; }; $cmd =~ /^T$/ && do { local($p,$f,$l,$s,$h,$a,$e,$r,@a,@sub); for ($i = 1; @@ -718,7 +824,7 @@ sub DB { $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; } # PIPE: - } # <-- Do we know what this brace is for? + #} # <-- Do we know what this brace is for? $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; if ($onetimeDump) { $onetimeDump = undef; @@ -807,10 +913,23 @@ sub eval { } } +sub install_breakpoints { + my $filename = shift; + return unless exists $postponed{$filename}; + my %break = %{$postponed{$filename}}; + for (keys %break) { + my $i = $_; + #if (/\D/) { # Subroutine name + #} + $dbline{$i} = $break{$_}; # Cannot be done before the file is around + } +} + sub dumpit { local ($savout) = select($OUT); do 'dumpvar.pl' unless defined &main::dumpValue; if (defined &main::dumpValue) { + local $frame = 0; &main::dumpValue(shift); } else { print $OUT "dumpvar.pl not available.\n"; @@ -852,6 +971,7 @@ sub system { } sub setterm { + local $frame = 0; eval "require Term::ReadLine;" or die $@; if ($notty) { if ($tty) { @@ -882,9 +1002,20 @@ sub setterm { $LINEINFO = $OUT unless defined $LINEINFO; $lineinfo = $console unless defined $lineinfo; $term->MinLine(2); + if ($term->Features->{setHistory} and "@hist" ne "?") { + $term->SetHistory(@hist); + } } sub readline { + 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; $term->readline(@_); } @@ -939,7 +1070,7 @@ sub parse_options { print $OUT "Unknown option `$opt'\n" unless $matches; print $OUT "Ambiguous option `$opt'\n" if $matches > 1; $option{$option} = $val if $matches == 1 and defined $val; - eval "require '$optionRequire{$option}'" + eval "local \$frame = 0; require '$optionRequire{$option}'" if $matches == 1 and defined $optionRequire{$option} and defined $val; $ {$optionVars{$option}} = $val if $matches == 1 @@ -953,6 +1084,31 @@ sub parse_options { } } +sub set_list { + my ($stem,@list) = @_; + my $val; + $ENV{"$ {stem}_n"} = @list; + for $i (0 .. $#list) { + $val = $list[$i]; + $val =~ s/\\/\\\\/g; + $val =~ s/[\0-\37\177\200-\377]/"\\0x" . unpack('H2',$&)/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; } @@ -1060,10 +1216,11 @@ l subname List first window of lines from subroutine. l List next window of lines. - List previous window of lines. w [line] List window around line. +. Return to the executed line. f filename Switch to viewing filename. /pattern/ Search forwards for pattern; final / is optional. ?pattern? Search backwards for pattern; final ? is optional. -L List all breakpoints and actions. +L List all breakpoints and actions for the current file. S [[!]pattern] List subroutine names [not] matching pattern. t Toggle trace mode. t expr Trace through execution of expr. @@ -1118,6 +1275,8 @@ p expr Same as \"print DB::OUT expr\" in current package. ||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well. \= [alias value] Define a command alias, or list current aliases. command Execute as a perl statement in current package. +R Pure-man-restart of debugger, debugger state and command-line + options are lost. h [db_command] Get help [on a specific debugger command], enter |h to page. h h Summary of debugger commands. q or ^D Quit. @@ -1126,7 +1285,7 @@ q or ^D Quit. $summary = <<"END_SUM"; List/search source lines: Control script execution: l [ln|sub] List source code T Stack trace - - List previous lines s [expr] Single step [in expr] + - or . List previous/current line s [expr] Single step [in expr] w [line] List around line n [expr] Next, steps over subs f filename View source in file Repeat last n or s /pattern/ Search forward r Return from subroutine @@ -1140,7 +1299,7 @@ Debugger controls: L List break pts & actions = [a val] Define/list an alias a [ln] cmd Do cmd before line h [db_cmd] Get help on command A Delete all actions |[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess - q or ^D Quit + q or ^D Quit R Attempt a restart Data Examination: expr Execute perl code, also see: s,n,t expr S [[!]pat] List subroutine names [not] matching pattern V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern. @@ -1151,8 +1310,8 @@ END_SUM # '); # Fix balance of Emacs parsing } - sub diesignal { + local $frame = 0; $SIG{'ABRT'} = DEFAULT; kill 'ABRT', $$ if $panic++; print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue @@ -1164,6 +1323,7 @@ sub diesignal { } sub dbwarn { + local $frame = 0; local $SIG{__WARN__} = ''; require Carp; #&warn("Entering dbwarn\n"); @@ -1177,6 +1337,7 @@ sub dbwarn { } sub dbdie { + local $frame = 0; local $SIG{__DIE__} = ''; local $SIG{__WARN__} = ''; my $i = 0; my $ineval = 0; my $sub; @@ -1203,18 +1364,6 @@ sub dbdie { die $mess; } -# sub diehard { # Always dump, useful if fatal is -# # deeply in evals. -# local $SIG{__DIE__} = ''; -# require Carp; -# # We do not want to debug this (automatic disabling works inside DB::DB) -# my ($mysingle,$mytrace) = ($single,$trace); -# $single = 0; $trace = 0; -# my $mess = Carp::longmess(@_); -# ($single,$trace) = ($mysingle,$mytrace); -# die $mess; -# } - sub warnLevel { if (@_) { $prevwarn = $SIG{__WARN__} unless $warnLevel; @@ -1290,591 +1439,8 @@ BEGIN { # This does not compile, alas. $level = 0; # Level of recursive debugging } -#use Carp; # This did break, left for debuggin - -1; -package DB; - -# modified Perl debugger, to be run from Emacs in perldb-mode -# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 -# Johan Vromans -- upgrade to 4.0 pl 10 - -$header = '$RCSfile: perl5db.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:07 $'; -# -# This file is automatically included if you do perl -d. -# It's probably not useful to include this yourself. -# -# Perl supplies the values for @line and %sub. It effectively inserts -# a &DB'DB(); in front of every place that can -# have a breakpoint. It also inserts a do 'perldb.pl' before the first line. -# -# $Log: perldb.pl,v $ - -# Is Perl being run from Emacs? -$emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); -shift(@main::ARGV) if $emacs; - -#require Term::ReadLine; - -local($^W) = 0; - -if (-e "/dev/tty") { - $console = "/dev/tty"; - $rcfile=".perldb"; -} -elsif (-e "con") { - $console = "con"; - $rcfile="perldb.ini"; -} -else { - $console = "sys\$command"; - $rcfile="perldb.ini"; -} - -# Around a bug: -if (defined $ENV{'OS2_SHELL'}) { # In OS/2 - if ($DB::emacs) { - $console = undef; - } else { - $console = "/dev/con"; - } -} - -open(IN, "<$console") || open(IN, "<&STDIN"); # so we don't dingle stdin -open(OUT,">$console") || open(OUT, ">&STDERR") - || open(OUT, ">&STDOUT"); # so we don't dongle stdout -select(OUT); -$| = 1; # for DB::OUT -select(STDOUT); -$| = 1; # for real STDOUT -$sub = ''; +BEGIN {$^W = $ini_warn;} # Switch warnings back -$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; -print OUT "\nLoading DB routines from $header\n"; -print OUT ("Emacs support ", - $emacs ? "enabled" : "available", - ".\n"); -print OUT "\nEnter h for help.\n\n"; - -@ARGS; - -sub DB { - &save; - ($pkg, $filename, $line) = caller; - $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . - "package $pkg;"; # this won't let them modify, alas - local(*dbline) = "::_<$filename"; - $max = $#dbline; - if (($stop,$action) = split(/\0/,$dbline{$line})) { - if ($stop eq '1') { - $signal |= 1; - } - else { - $evalarg = "\$DB::signal |= do {$stop;}"; &eval; - $dbline{$line} =~ s/;9($|\0)/$1/; - } - } - if ($single || $trace || $signal) { - if ($emacs) { - print OUT "\032\032$filename:$line:0\n"; - } else { - $prefix = $sub =~ /'|::/ ? "" : "${pkg}::"; - $prefix .= "$sub($filename:"; - if (length($prefix) > 30) { - print OUT "$prefix$line):\n$line:\t",$dbline[$line]; - $prefix = ""; - $infix = ":\t"; - } - else { - $infix = "):\t"; - print OUT "$prefix$line$infix",$dbline[$line]; - } - for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { - last if $dbline[$i] =~ /^\s*(}|#|\n)/; - print OUT "$prefix$i$infix",$dbline[$i]; - } - } - } - $evalarg = $action, &eval if $action; - if ($single || $signal) { - $evalarg = $pre, &eval if $pre; - print OUT $#stack . " levels deep in subroutine calls!\n" - if $single & 4; - $start = $line; - CMD: - while ((print OUT " DB<", $#hist+1, "> "), $cmd=&gets) { - { - $single = 0; - $signal = 0; - $cmd eq '' && exit 0; - chop($cmd); - $cmd =~ s/\\$// && do { - print OUT " cont: "; - $cmd .= &gets; - redo CMD; - }; - $cmd =~ /^q$/ && exit 0; - $cmd =~ /^$/ && ($cmd = $laststep); - push(@hist,$cmd) if length($cmd) > 1; - ($i) = split(/\s+/,$cmd); - eval "\$cmd =~ $alias{$i}", print OUT $@ if $alias{$i}; - $cmd =~ /^h$/ && do { - print OUT " -T Stack trace. -s Single step. -n Next, steps over subroutine calls. -r Return from current subroutine. -c [line] Continue; optionally inserts a one-time-only breakpoint - at the specified line. - Repeat last n or s. -l min+incr List incr+1 lines starting at min. -l min-max List lines. -l line List line; -l List next window. -- List previous window. -w line List window around line. -l subname List subroutine. -f filename Switch to filename. -/pattern/ Search forwards for pattern; final / is optional. -?pattern? Search backwards for pattern. -L List breakpoints and actions. -S List subroutine names. -t Toggle trace mode. -b [line] [condition] - Set breakpoint; line defaults to the current execution line; - condition breaks if it evaluates to true, defaults to \'1\'. -b subname [condition] - Set breakpoint at first line of subroutine. -d [line] Delete breakpoint. -D Delete all breakpoints. -a [line] command - Set an action to be done before the line is executed. - Sequence is: check for breakpoint, print line if necessary, - do action, prompt user if breakpoint or step, evaluate line. -A Delete all actions. -V [pkg [vars]] List some (default all) variables in package (default current). -X [vars] Same as \"V currentpackage [vars]\". -< command Define command before prompt. -> command Define command after prompt. -! number Redo command (default previous command). -! -number Redo number\'th to last command. -H -number Display last number commands (default all). -q or ^D Quit. -p expr Same as \"print DB::OUT expr\" in current package. -= [alias value] Define a command alias, or list current aliases. -command Execute as a perl statement in current package. - -"; - next CMD; }; - $cmd =~ /^t$/ && do { - $trace = !$trace; - print OUT "Trace = ".($trace?"on":"off")."\n"; - next CMD; }; - $cmd =~ /^S$/ && do { - foreach $subname (sort(keys %sub)) { - print OUT $subname,"\n"; - } - next CMD; }; - $cmd =~ s/^X\b/V $pkg/; - $cmd =~ /^V$/ && do { - $cmd = "V $pkg"; }; - $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { - local ($savout) = select(OUT); - $packname = $1; - @vars = split(' ',$2); - do 'dumpvar.pl' unless defined &main::dumpvar; - if (defined &main::dumpvar) { - &main::dumpvar($packname,@vars); - } - else { - print DB::OUT "dumpvar.pl not available.\n"; - } - select ($savout); - next CMD; }; - $cmd =~ /^f\b\s*(.*)/ && do { - $file = $1; - if (!$file) { - print OUT "The old f command is now the r command.\n"; - print OUT "The new f command switches filenames.\n"; - next CMD; - } - if (!defined $main::{'_<' . $file}) { - if (($try) = grep(m#^_<.*$file#, keys %main::)) { - $file = substr($try,2); - print "\n$file:\n"; - } - } - if (!defined $main::{'_<' . $file}) { - print OUT "There's no code here anything matching $file.\n"; - next CMD; - } - elsif ($file ne $filename) { - *dbline = "::_<$file"; - $max = $#dbline; - $filename = $file; - $start = 1; - $cmd = "l"; - } }; - $cmd =~ /^l\b\s*([':A-Za-z_][':\w]*)/ && do { - $subname = $1; - $subname = "main::" . $subname unless $subname =~ /'|::/; - $subname = "main" . $subname if substr($subname,0,1)eq "'"; - $subname = "main" . $subname if substr($subname,0,2)eq "::"; - # VMS filespecs may (usually do) contain ':', so don't use split - ($file,$subrange) = $sub{$subname} =~ /(.*):(.*)/; - if ($file ne $filename) { - *dbline = "::_<$file"; - $max = $#dbline; - $filename = $file; - } - if ($subrange) { - if (eval($subrange) < -$window) { - $subrange =~ s/-.*/+/; - } - $cmd = "l $subrange"; - } else { - print OUT "Subroutine $1 not found.\n"; - next CMD; - } }; - $cmd =~ /^w\b\s*(\d*)$/ && do { - $incr = $window - 1; - $start = $1 if $1; - $start -= $preview; - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^-$/ && do { - $incr = $window - 1; - $cmd = 'l ' . ($start-$window*2) . '+'; }; - $cmd =~ /^l$/ && do { - $incr = $window - 1; - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { - $start = $1 if $1; - $incr = $2; - $incr = $window - 1 unless $incr; - $cmd = 'l ' . $start . '-' . ($start + $incr); }; - $cmd =~ /^l\b\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { - $end = (!$2) ? $max : ($4 ? $4 : $2); - $end = $max if $end > $max; - $i = $2; - $i = $line if $i eq '.'; - $i = 1 if $i < 1; - if ($emacs) { - print OUT "\032\032$filename:$i:0\n"; - $i = $end; - } else { - for (; $i <= $end; $i++) { - print OUT "$i:\t", $dbline[$i]; - last if $signal; - } - } - $start = $i; # remember in case they want more - $start = $max if $start > $max; - next CMD; }; - $cmd =~ /^D$/ && do { - print OUT "Deleting all breakpoints...\n"; - for ($i = 1; $i <= $max ; $i++) { - if (defined $dbline{$i}) { - $dbline{$i} =~ s/^[^\0]+//; - if ($dbline{$i} =~ s/^\0?$//) { - delete $dbline{$i}; - } - } - } - next CMD; }; - $cmd =~ /^L$/ && do { - for ($i = 1; $i <= $max; $i++) { - if (defined $dbline{$i}) { - print OUT "$i:\t", $dbline[$i]; - ($stop,$action) = split(/\0/, $dbline{$i}); - print OUT " break if (", $stop, ")\n" - if $stop; - print OUT " action: ", $action, "\n" - if $action; - last if $signal; - } - } - next CMD; }; - $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { - $subname = $1; - $cond = $2 || '1'; - $subname = "${pkg}::" . $subname - unless $subname =~ /'|::/; - $subname = "main" . $subname if substr($subname,0,1) eq "'"; - $subname = "main" . $subname if substr($subname,0,2) eq "::"; - # VMS filespecs may (usually do) contain ':', so don't use split - ($filename,$i) = $sub{$subname} =~ /(.*):(.*)/; - $i += 0; - if ($i) { - *dbline = "::_<$filename"; - ++$i while $dbline[$i] == 0 && $i < $#dbline; - $dbline{$i} =~ s/^[^\0]*/$cond/; - } else { - print OUT "Subroutine $subname not found.\n"; - } - next CMD; }; - $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { - $i = ($1?$1:$line); - $cond = $2 || '1'; - if ($dbline[$i] == 0) { - print OUT "Line $i not breakable.\n"; - } else { - $dbline{$i} =~ s/^[^\0]*/$cond/; - } - next CMD; }; - $cmd =~ /^d\b\s*(\d+)?/ && do { - $i = ($1?$1:$line); - $dbline{$i} =~ s/^[^\0]*//; - delete $dbline{$i} if $dbline{$i} eq ''; - next CMD; }; - $cmd =~ /^A$/ && do { - for ($i = 1; $i <= $max ; $i++) { - if (defined $dbline{$i}) { - $dbline{$i} =~ s/\0[^\0]*//; - delete $dbline{$i} if $dbline{$i} eq ''; - } - } - next CMD; }; - $cmd =~ /^<\s*(.*)/ && do { - $pre = action($1); - next CMD; }; - $cmd =~ /^>\s*(.*)/ && do { - $post = action($1); - next CMD; }; - $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { - $i = $1; - if ($dbline[$i] == 0) { - print OUT "Line $i may not have an action.\n"; - } else { - $dbline{$i} =~ s/\0[^\0]*//; - $dbline{$i} .= "\0" . action($3); - } - next CMD; }; - $cmd =~ /^n$/ && do { - $single = 2; - $laststep = $cmd; - last CMD; }; - $cmd =~ /^s$/ && do { - $single = 1; - $laststep = $cmd; - last CMD; }; - $cmd =~ /^c\b\s*(\d*)\s*$/ && do { - $i = $1; - if ($i) { - if ($dbline[$i] == 0) { - print OUT "Line $i not breakable.\n"; - next CMD; - } - $dbline{$i} =~ s/(\0|$)/;9$1/; # add one-time-only b.p. - } - for ($i=0; $i <= $#stack; ) { - $stack[$i++] &= ~1; - } - last CMD; }; - $cmd =~ /^r$/ && do { - $stack[$#stack] |= 2; - last CMD; }; - $cmd =~ /^T$/ && do { - local($p,$f,$l,$s,$h,$a,@a,@sub); - for ($i = 1; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) { - @a = (); - for $arg (@args) { - $_ = "$arg"; - s/'/\\'/g; - s/([^\0]*)/'$1'/ - unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; - s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; - s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; - push(@a, $_); - } - $w = $w ? '@ = ' : '$ = '; - $a = $h ? '(' . join(', ', @a) . ')' : ''; - push(@sub, "$w$s$a from file $f line $l\n"); - last if $signal; - } - for ($i=0; $i <= $#sub; $i++) { - last if $signal; - print OUT $sub[$i]; - } - next CMD; }; - $cmd =~ /^\/(.*)$/ && do { - $inpat = $1; - $inpat =~ s:([^\\])/$:$1:; - if ($inpat ne "") { - eval '$inpat =~ m'."\a$inpat\a"; - if ($@ ne "") { - print OUT "$@"; - next CMD; - } - $pat = $inpat; - } - $end = $start; - eval ' - for (;;) { - ++$start; - $start = 1 if ($start > $max); - last if ($start == $end); - if ($dbline[$start] =~ m'."\a$pat\a".'i) { - if ($emacs) { - print OUT "\032\032$filename:$start:0\n"; - } else { - print OUT "$start:\t", $dbline[$start], "\n"; - } - last; - } - } '; - print OUT "/$pat/: not found\n" if ($start == $end); - next CMD; }; - $cmd =~ /^\?(.*)$/ && do { - $inpat = $1; - $inpat =~ s:([^\\])\?$:$1:; - if ($inpat ne "") { - eval '$inpat =~ m'."\a$inpat\a"; - if ($@ ne "") { - print OUT "$@"; - next CMD; - } - $pat = $inpat; - } - $end = $start; - eval ' - for (;;) { - --$start; - $start = $max if ($start <= 0); - last if ($start == $end); - if ($dbline[$start] =~ m'."\a$pat\a".'i) { - if ($emacs) { - print OUT "\032\032$filename:$start:0\n"; - } else { - print OUT "$start:\t", $dbline[$start], "\n"; - } - last; - } - } '; - print OUT "?$pat?: not found\n" if ($start == $end); - next CMD; }; - $cmd =~ /^!+\s*(-)?(\d+)?$/ && do { - pop(@hist) if length($cmd) > 1; - $i = ($1?($#hist-($2?$2:1)):($2?$2:$#hist)); - $cmd = $hist[$i] . "\n"; - print OUT $cmd; - redo CMD; }; - $cmd =~ /^!(.+)$/ && do { - $pat = "^$1"; - pop(@hist) if length($cmd) > 1; - for ($i = $#hist; $i; --$i) { - last if $hist[$i] =~ $pat; - } - if (!$i) { - print OUT "No such command!\n\n"; - next CMD; - } - $cmd = $hist[$i] . "\n"; - print OUT $cmd; - redo CMD; }; - $cmd =~ /^H\b\s*(-(\d+))?/ && do { - $end = $2?($#hist-$2):0; - $hist = 0 if $hist < 0; - for ($i=$#hist; $i>$end; $i--) { - print OUT "$i: ",$hist[$i],"\n" - unless $hist[$i] =~ /^.?$/; - }; - next CMD; }; - $cmd =~ s/^p( .*)?$/print DB::OUT$1/; - $cmd =~ /^=/ && do { - if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { - $alias{$k}="s~$k~$v~"; - print OUT "$k = $v\n"; - } elsif ($cmd =~ /^=\s*$/) { - foreach $k (sort keys(%alias)) { - if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { - print OUT "$k = $v\n"; - } else { - print OUT "$k\t$alias{$k}\n"; - }; - }; - }; - next CMD; }; - } - $evalarg = $cmd; &eval; - print OUT "\n"; - } - if ($post) { - $evalarg = $post; &eval; - } - } - ($@, $!, $,, $/, $\, $^W) = @saved; - (); -} - -sub save { - @saved = ($@, $!, $,, $/, $\, $^W); - $, = ""; $/ = "\n"; $\ = ""; $^W = 0; -} - -# The following takes its argument via $evalarg to preserve current @_ - -sub eval { - eval "$usercontext $evalarg; &DB::save"; - print OUT $@; -} - -sub action { - local($action) = @_; - while ($action =~ s/\\$//) { - print OUT "+ "; - $action .= &gets; - } - $action; -} - -sub gets { - local($.); - ; -} - -sub catch { - $signal = 1; -} - -sub sub { - push(@stack, $single); - $single &= 1; - $single |= 4 if $#stack == $deep; - if (wantarray) { - @i = &$sub; - $single |= pop(@stack); - @i; - } - else { - $i = &$sub; - $single |= pop(@stack); - $i; - } -} - -$trace = $signal = $single = 0; # uninitialized warning suppression - -@hist = ('?'); -$SIG{'INT'} = "DB::catch"; -$deep = 100; # warning if stack gets this deep -$window = 10; -$preview = 3; - -@stack = (0); -@ARGS = @ARGV; -for (@args) { - s/'/\\'/g; - s/(.*)/'$1'/ unless /^-?[\d.]+$/; -} - -if (-f $rcfile) { - do "./$rcfile"; -} -elsif (-f "$ENV{'LOGDIR'}/$rcfile") { - do "$ENV{'LOGDIR'}/$rcfile"; -} -elsif (-f "$ENV{'HOME'}/$rcfile") { - do "$ENV{'HOME'}/$rcfile"; -} +#use Carp; # This did break, left for debuggin 1;