package DB;
-$header = '$Header: perldb.pl,v 3.0.1.2 90/03/12 16:39:39 lwall Locked $';
+# modified Perl debugger, to be run from Emacs in perldb-mode
+# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
+# Johan Vromans -- upgrade to 4.0 pl 10
+
+$header = '$RCSfile: perldb.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.
# have a breakpoint. It also inserts a do 'perldb.pl' before the first line.
#
# $Log: perldb.pl,v $
+# Revision 4.1 92/08/07 18:24:07 lwall
+#
+# Revision 4.0.1.3 92/06/08 13:43:57 lwall
+# patch20: support for MSDOS folded into perldb.pl
+# patch20: perldb couldn't debug file containing '-', such as STDIN designator
+#
+# Revision 4.0.1.2 91/11/05 17:55:58 lwall
+# patch11: perldb.pl modified to run within emacs in perldb-mode
+#
+# Revision 4.0.1.1 91/06/07 11:17:44 lwall
+# patch4: added $^P variable to control calling of perldb routines
+# patch4: debugger sometimes listed wrong number of lines for a statement
+#
+# Revision 4.0 91/03/20 01:25:50 lwall
+# 4.0 baseline.
+#
+# Revision 3.0.1.6 91/01/11 18:08:58 lwall
+# patch42: @_ couldn't be accessed from debugger
+#
+# Revision 3.0.1.5 90/11/10 01:40:26 lwall
+# patch38: the debugger wouldn't stop correctly or do action routines
+#
+# Revision 3.0.1.4 90/10/15 17:40:38 lwall
+# patch29: added caller
+# patch29: the debugger now understands packages and evals
+# patch29: scripts now run at almost full speed under the debugger
+# patch29: more variables are settable from debugger
+#
+# Revision 3.0.1.3 90/08/09 04:00:58 lwall
+# patch19: debugger now allows continuation lines
+# patch19: debugger can now dump lists of variables
+# patch19: debugger can now add aliases easily from prompt
+#
# Revision 3.0.1.2 90/03/12 16:39:39 lwall
# patch13: perl -d didn't format stack traces of *foo right
# patch13: perl -d wiped out scalar return values of subroutines
#
#
-open(IN,"/dev/tty"); # so we don't dingle stdin
-open(OUT,">/dev/tty"); # so we don't dongle stdout
+if (-e "/dev/tty") {
+ $console = "/dev/tty";
+ $rcfile=".perldb";
+}
+else {
+ $console = "con";
+ $rcfile="perldb.ini";
+}
+
+open(IN, "<$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
+$| = 1; # for DB::OUT
select(STDOUT);
$| = 1; # for real STDOUT
+$sub = '';
+
+# Is Perl being run from Emacs?
+$emacs = $main::ARGV[$[] eq '-emacs';
+shift(@main::ARGV) if $emacs;
$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
-print OUT "\nLoading DB from $header\n\n";
+print OUT "\nLoading DB routines from $header\n";
+print OUT ("Emacs support ",
+ $emacs ? "enabled" : "available",
+ ".\n");
+print OUT "\nEnter h for help.\n\n";
sub DB {
- local($. ,$@, $!, $[, $,, $/, $\);
- $[ = 0; $, = ""; $/ = "\n"; $\ = "";
- ($line) = @_;
- if ($stop[$line]) {
+ &save;
+ ($package, $filename, $line) = caller;
+ $usercontext = '($@, $!, $[, $,, $/, $\) = @saved;' .
+ "package $package;"; # this won't let them modify, alas
+ local(*dbline) = "::_<$filename";
+ $max = $#dbline;
+ if (($stop,$action) = split(/\0/,$dbline{$line})) {
if ($stop eq '1') {
$signal |= 1;
}
else {
- package main;
- $DB'signal |= eval $DB'stop[$DB'line]; print DB'OUT $@;
- $DB'stop[$DB'line] =~ s/;9$//;
+ $evalarg = "\$DB::signal |= do {$stop;}"; &eval;
+ $dbline{$line} =~ s/;9($|\0)/$1/;
}
}
if ($single || $trace || $signal) {
- print OUT "$sub($line):\t",$line[$line];
- for ($i = $line + 1; $i <= $max && $line[$i] == 0; ++$i) {
- last if $line[$i] =~ /^\s*(}|#|\n)/;
- print OUT "$sub($i):\t",$line[$i];
+ if ($emacs) {
+ print OUT "\032\032$filename:$line:0\n";
+ } else {
+ print OUT "$package::" unless $sub =~ /'|::/;
+ print OUT "$sub($filename:$line):\t",$dbline[$line];
+ for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) {
+ last if $dbline[$i] =~ /^\s*(}|#|\n)/;
+ print OUT "$sub($filename:$i):\t",$dbline[$i];
+ }
}
}
- if ($action[$line]) {
- package main;
- eval $DB'action[$DB'line]; print DB'OUT $@;
- }
+ $evalarg = $action, &eval if $action;
if ($single || $signal) {
- if ($pre) {
- package main;
- eval $DB'pre; print DB'OUT $@;
- }
+ $evalarg = $pre, &eval if $pre;
print OUT $#stack . " levels deep in subroutine calls!\n"
if $single & 4;
$start = $line;
- while ((print OUT " DB<", $#hist+1, "> "), $cmd=<IN>) {
- $single = 0;
- $signal = 0;
- $cmd eq '' && exit 0;
- chop($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 "
+ 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.
-f Finish current subroutine.
+r Return from current subroutine.
c [line] Continue; optionally inserts a one-time-only breakpoint
at the specified line.
<CR> Repeat last n or s.
- 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.
Sequence is: check for breakpoint, print line if necessary,
do action, prompt user if breakpoint or step, evaluate line.
A Delete all actions.
-V package List all variables and values in package (default main).
+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 \"package main; print DB'OUT expr\".
-command Execute as a perl statement.
+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; };
- $cmd =~ /^t$/ && do {
- $trace = !$trace;
- print OUT "Trace = ".($trace?"on":"off")."\n";
- next; };
- $cmd =~ /^S$/ && do {
- foreach $subname (sort(keys %sub)) {
- if ($subname =~ /^main'(.*)/) {
- print OUT $1,"\n";
+ 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 $package/;
+ $cmd =~ /^V$/ && do {
+ $cmd = "V $package"; };
+ $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do {
+ local ($savout) = select(OUT);
+ $packname = $1;
+ @vars = split(' ',$2);
+ do 'dumpvar.pl' unless defined &main::dumpvar;
+ if (defined &main::dumpvar) {
+ &main::dumpvar($packname,@vars);
}
else {
- print OUT $subname,"\n";
+ print DB::OUT "dumpvar.pl not available.\n";
+ }
+ select ($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";
+ }
}
- }
- next; };
- $cmd =~ /^V$/ && do {
- $cmd = 'V main'; };
- $cmd =~ /^V\s*(['A-Za-z_]['\w]*)$/ && do {
- $packname = $1;
- do 'dumpvar.pl' unless defined &main'dumpvar;
- if (defined &main'dumpvar) {
- &main'dumpvar($packname);
- }
- else {
- print DB'OUT "dumpvar.pl not available.\n";
- }
- next; };
- $cmd =~ /^l\s*(['A-Za-z_]['\w]*)/ && do {
- $subname = $1;
- $subname = "main'" . $subname unless $subname =~ /'/;
- $subrange = $sub{$subname};
- if ($subrange) {
- if (eval($subrange) < -$window) {
- $subrange =~ s/-.*/+/;
+ if (!defined $::_main{'_<' . $file}) {
+ print OUT "There's no code here anything matching $file.\n";
+ next CMD;
}
- $cmd = "l $subrange";
- } else {
- print OUT "Subroutine $1 not found.\n";
- next;
- } };
- $cmd =~ /^w\s*(\d*)$/ && 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); };
- $cmd =~ /^l\s*(\d*)\+(\d*)$/ && do {
- $start = $1 if $1;
- $incr = $2;
- $incr = $window - 1 unless $incr;
- $cmd = 'l ' . $start . '-' . ($start + $incr); };
- $cmd =~ /^l\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;
- for (; $i <= $end; $i++) {
- print OUT "$i:\t", $line[$i];
- last if $signal;
- }
- $start = $i; # remember in case they want more
- $start = $max if $start > $max;
- next; };
- $cmd =~ /^D$/ && do {
- print OUT "Deleting all breakpoints...\n";
- for ($i = 1; $i <= $max ; $i++) {
- $stop[$i] = 0;
- }
- next; };
- $cmd =~ /^L$/ && do {
- for ($i = 1; $i <= $max; $i++) {
- if ($stop[$i] || $action[$i]) {
- print OUT "$i:\t", $line[$i];
- print OUT " break if (", $stop[$i], ")\n"
- if $stop[$i];
- print OUT " action: ", $action[$i], "\n"
- if $action[$i];
+ 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 "::";
+ ($file,$subrange) = split(/:/,$sub{$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';
+ $subname = "$package::" . $subname unless $subname =~ /'|::/;
+ $subname = "main" . $subname if substr($subname,0,1) eq "'";
+ $subname = "main" . $subname if substr($subname,0,2) eq "::";
+ ($filename,$i) = split(/:/, $sub{$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 = do action($1);
+ next CMD; };
+ $cmd =~ /^>\s*(.*)/ && do {
+ $post = do 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" . do 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 = @args;
+ for (@a) {
+ s/'/\\'/g;
+ s/([^\0]*)/'$1'/ unless /^-?[\d.]+$/;
+ s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
+ s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
+ }
+ $w = $w ? '@ = ' : '$ = ';
+ $a = $h ? '(' . join(', ', @a) . ')' : '';
+ push(@sub, "$w&$s$a from file $f line $l\n");
last if $signal;
}
- }
- next; };
- $cmd =~ /^b\s*(['A-Za-z_]['\w]*)\s*(.*)/ && do {
- $subname = $1;
- $subname = "main'" . $subname unless $subname =~ /'/;
- ($i) = split(/-/, $sub{$subname});
- if ($i) {
- ++$i while $line[$i] == 0 && $i < $#line;
- $stop[$i] = $2 ? $2 : 1;
- } else {
- print OUT "Subroutine $1 not found.\n";
- }
- next; };
- $cmd =~ /^b\s*(\d*)\s*(.*)/ && do {
- $i = ($1?$1:$line);
- if ($line[$i] == 0) {
- print OUT "Line $i not breakable.\n";
- } else {
- $stop[$i] = $2 ? $2 : 1;
- }
- next; };
- $cmd =~ /^d\s*(\d+)?/ && do {
- $i = ($1?$1:$line);
- $stop[$i] = '';
- next; };
- $cmd =~ /^A$/ && do {
- for ($i = 1; $i <= $max ; $i++) {
- $action[$i] = '';
- }
- next; };
- $cmd =~ /^<\s*(.*)/ && do {
- $pre = do action($1);
- next; };
- $cmd =~ /^>\s*(.*)/ && do {
- $post = do action($1);
- next; };
- $cmd =~ /^a\s*(\d+)(\s+(.*))?/ && do {
- $i = $1;
- if ($line[$i] == 0) {
- print OUT "Line $i may not have an action.\n";
- } else {
- $action[$i] = do action($3);
- }
- next; };
- $cmd =~ /^n$/ && do {
- $single = 2;
- $laststep = $cmd;
- last; };
- $cmd =~ /^s$/ && do {
- $single = 1;
- $laststep = $cmd;
- last; };
- $cmd =~ /^c\s*(\d*)\s*$/ && do {
- $i = $1;
- if ($i) {
- if ($line[$i] == 0) {
- print OUT "Line $i not breakable.\n";
- next;
+ for ($i=0; $i <= $#sub; $i++) {
+ last if $signal;
+ print OUT $sub[$i];
}
- $stop[$i] .= ";9"; # add one-time-only b.p.
- }
- for ($i=0; $i <= $#stack; ) {
- $stack[$i++] &= ~1;
- }
- last; };
- $cmd =~ /^f$/ && do {
- $stack[$#stack] |= 2;
- last; };
- $cmd =~ /^T$/ && do {
- for ($i=0; $i <= $#sub; ) {
- print OUT $sub[$i++], "\n";
- last if $signal;
- }
- next; };
- $cmd =~ /^\/(.*)$/ && do {
- $inpat = $1;
- $inpat =~ s:([^\\])/$:$1:;
- if ($inpat ne "") {
- eval '$inpat =~ m'."\n$inpat\n";
- if ($@ ne "") {
- print OUT "$@";
- next;
+ next CMD; };
+ $cmd =~ /^\/(.*)$/ && do {
+ $inpat = $1;
+ $inpat =~ s:([^\\])/$:$1:;
+ if ($inpat ne "") {
+ eval '$inpat =~ m'."\n$inpat\n";
+ if ($@ ne "") {
+ print OUT "$@";
+ next CMD;
+ }
+ $pat = $inpat;
}
- $pat = $inpat;
- }
- $end = $start;
- eval '
- for (;;) {
- ++$start;
- $start = 1 if ($start > $max);
- last if ($start == $end);
- if ($line[$start] =~ m'."\n$pat\n".'i) {
- print OUT "$start:\t", $line[$start], "\n";
- last;
+ $end = $start;
+ eval '
+ for (;;) {
+ ++$start;
+ $start = 1 if ($start > $max);
+ last if ($start == $end);
+ if ($dbline[$start] =~ m'."\n$pat\n".'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 '$inpat =~ m'."\n$inpat\n";
+ if ($@ ne "") {
+ print OUT "$@";
+ next CMD;
+ }
+ $pat = $inpat;
}
- } ';
- print OUT "/$pat/: not found\n" if ($start == $end);
- next; };
- $cmd =~ /^\?(.*)$/ && do {
- $inpat = $1;
- $inpat =~ s:([^\\])\?$:$1:;
- if ($inpat ne "") {
- eval '$inpat =~ m'."\n$inpat\n";
- if ($@ ne "") {
- print OUT "$@";
- next;
+ $end = $start;
+ eval '
+ for (;;) {
+ --$start;
+ $start = $max if ($start <= 0);
+ last if ($start == $end);
+ if ($dbline[$start] =~ m'."\n$pat\n".'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;
}
- $pat = $inpat;
- }
- $end = $start;
- eval '
- for (;;) {
- --$start;
- $start = $max if ($start <= 0);
- last if ($start == $end);
- if ($line[$start] =~ m'."\n$pat\n".'i) {
- print OUT "$start:\t", $line[$start], "\n";
- last;
+ if (!$i) {
+ print OUT "No such command!\n\n";
+ next CMD;
}
- } ';
- print OUT "?$pat?: not found\n" if ($start == $end);
- next; };
- $cmd =~ /^!+\s*(-)?(\d+)?$/ && do {
- pop(@hist) if length($cmd) > 1;
- $i = ($1?($#hist-($2?$2:1)):($2?$2:$#hist));
- $cmd = $hist[$i] . "\n";
- print OUT $cmd;
- redo; };
- $cmd =~ /^!(.+)$/ && 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 = $hist[$i] . "\n";
- print OUT $cmd;
- redo; };
- $cmd =~ /^H\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; };
- $cmd =~ s/^p( .*)?$/print DB'OUT$1/;
- {
- package main;
- eval $DB'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; };
}
- print OUT $@,"\n";
+ $evalarg = $cmd; &eval;
+ print OUT "\n";
}
if ($post) {
- package main;
- eval $DB'post; print DB'OUT $@;
+ $evalarg = $post; &eval;
}
}
+ ($@, $!, $[, $,, $/, $\) = @saved;
+}
+
+sub save {
+ @saved = ($@, $!, $[, $,, $/, $\);
+ $[ = 0; $, = ""; $/ = "\n"; $\ = "";
+}
+
+# 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 .= <IN>;
+ $action .= &gets;
}
$action;
}
+sub gets {
+ local($.);
+ <IN>;
+}
+
sub catch {
$signal = 1;
}
push(@stack, $single);
$single &= 1;
$single |= 4 if $#stack == $deep;
- local(@args) = @_;
- for (@args) {
- if (/^StB\000/ && length($_) == length($_main{'_main'})) {
- $_ = sprintf("%s",$_);
- }
- else {
- s/'/\\'/g;
- s/(.*)/'$1'/ unless /^-?[\d.]+$/;
- }
- }
- push(@sub, $sub . '(' . join(', ', @args) . ') from ' . $line);
if (wantarray) {
@i = &$sub;
- --$#sub;
$single |= pop(@stack);
@i;
}
else {
$i = &$sub;
- --$#sub;
$single |= pop(@stack);
$i;
}
}
$single = 1; # so it stops on first executable statement
-$max = $#line;
@hist = ('?');
-$SIG{'INT'} = "DB'catch";
+$SIG{'INT'} = "DB::catch";
$deep = 100; # warning if stack gets this deep
$window = 10;
$preview = 3;
@stack = (0);
-@args = @ARGV;
+@ARGS = @ARGV;
for (@args) {
s/'/\\'/g;
s/(.*)/'$1'/ unless /^-?[\d.]+$/;
}
-push(@sub, 'main(' . join(', ', @args) . ")" );
-$sub = 'main';
-if (-f '.perldb') {
- do './.perldb';
+if (-f $rcfile) {
+ do "./$rcfile";
}
-elsif (-f "$ENV{'LOGDIR'}/.perldb") {
- do "$ENV{'LOGDIR'}/.perldb";
+elsif (-f "$ENV{'LOGDIR'}/$rcfile") {
+ do "$ENV{'LOGDIR'}/$rcfile";
}
-elsif (-f "$ENV{'HOME'}/.perldb") {
- do "$ENV{'HOME'}/.perldb";
+elsif (-f "$ENV{'HOME'}/$rcfile") {
+ do "$ENV{'HOME'}/$rcfile";
}
1;
projects / p5sagit/p5-mst-13.2.git / blobdiff