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[spider.git] / perl / DXDebug.pm

diff --git a/perl/DXDebug.pm b/perl/DXDebug.pm
index df3cb02741cef0d31b606a411358cfa4a3376de9..40cb3a257e1128651683a59dfe6fe0830d3334e3 100644 (file)
--- a/perl/DXDebug.pm
+++ b/perl/DXDebug.pm
@@ -11,54 +11,114 @@ package DXDebug;
 
 require Exporter;
 @ISA = qw(Exporter);
-@EXPORT = qw(dbginit dbg dbgadd dbgsub dbglist isdbg dbgclose);
-@EXPORT_OK = qw(dbginit dbg dbgadd dbgsub dbglist isdbg dbgclose);
+@EXPORT = qw(dbginit dbg dbgadd dbgsub dbglist dbgdump isdbg dbgclose confess croak cluck);
 
 use strict;
-use vars qw(%dbglevel $fp);
+use vars qw(%dbglevel $fp $callback $cleandays $keepdays);
 
-use FileHandle;
 use DXUtil;
 use DXLog ();
-use Carp;
+use Carp ();
 
 %dbglevel = ();
-$fp = DXLog::new('debug', 'dat', 'd');
+$fp = undef;
+$callback = undef;
+$keepdays = 10;
+$cleandays = 100;
 
-sub _store
+# Avoid generating "subroutine redefined" warnings with the following
+# hack (from CGI::Carp):
+if (!defined $DB::VERSION) {
+       local $^W=0;
+       eval qq( sub confess { 
+           \$SIG{__DIE__} = 'DEFAULT'; 
+        DXDebug::dbg(\$@);
+               DXDebug::dbg(Carp::shortmess(\@_));
+           exit(-1); 
+       }
+       sub croak { 
+               \$SIG{__DIE__} = 'DEFAULT'; 
+        DXDebug::dbg(\$@);
+               DXDebug::dbg(Carp::longmess(\@_));
+               exit(-1); 
+       }
+       sub carp    { DXDebug::dbg(Carp::shortmess(\@_)); }
+       sub cluck   { DXDebug::dbg(Carp::longmess(\@_)); } 
+       );
+
+    CORE::die(Carp::shortmess($@)) if $@;
+} else {
+    eval qq( sub confess { die Carp::longmess(\@_); }; 
+                        sub croak { die Carp::shortmess(\@_); }; 
+                        sub cluck { warn Carp::longmess(\@_); }; 
+                        sub carp { warn Carp::shortmess(\@_); }; 
+   );
+} 
+
+
+sub dbg($)
 {
+       return unless $fp;
        my $t = time; 
        for (@_) {
-               $fp->writeunix($t, "$t^$_"); 
-               print STDERR $_;
+               my $r = $_;
+               chomp $r;
+               my @l = split /\n/, $r;
+               for (@l) {
+                       s/([\x00-\x08\x0B-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
+                       print "$_\n" if defined \*STDOUT;
+                       my $str = "$t^$_";
+                       &$callback($str) if $callback;
+                       $fp->writeunix($t, $str); 
+               }
        }
 }
 
 sub dbginit
 {
+       $callback = shift;
+       
        # add sig{__DIE__} handling
        if (!defined $DB::VERSION) {
-               $SIG{__WARN__} = $SIG{__DIE__} = \&_store;
+               $SIG{__WARN__} = sub { 
+                       if ($_[0] =~ /Deep\s+recursion/i) {
+                               dbg($@);
+                               dbg(Carp::longmess(@_)); 
+                               CORE::die;
+                       } else { 
+                               dbg($@);
+                               dbg(Carp::shortmess(@_));
+                       }
+               };
+               
+               $SIG{__DIE__} = sub { dbg($@); dbg(Carp::longmess(@_)); };
        }
+
+       $fp = DXLog::new('debug', 'dat', 'd');
 }
 
 sub dbgclose
 {
        $SIG{__DIE__} = $SIG{__WARN__} = 'DEFAULT';
-       $fp->close();
+       $fp->close() if $fp;
+       undef $fp;
 }
 
-sub dbg
+sub dbgdump
 {
        my $l = shift;
-       if ($dbglevel{$l}) {
-           my @in = @_;
-               my $t = time;
-               for (@in) {
-                   s/\n$//o;
-                       s/\a//og;   # beeps
-                       print "$_\n" if defined \*STDOUT;
-                       $fp->writeunix($t, "$t^$_");
+       my $m = shift;
+       if ($fp && ($dbglevel{$l} || $l eq 'err')) {
+               foreach my $l (@_) {
+                       for (my $o = 0; $o < length $l; $o += 16) {
+                               my $c = substr $l, $o, 16;
+                               my $h = unpack "H*", $c;
+                               $c =~ s/[\x00-\x1f\x7f-\xff]/./g;
+                               my $left = 16 - length $c;
+                               $h .= ' ' x (2 * $left) if $left > 0;
+                               dbg($m . sprintf("%4d:", $o) . "$h $c");
+                               $m = ' ' x (length $m);
+                       }
                }
        }
 }
@@ -86,10 +146,46 @@ sub dbglist
        return keys (%dbglevel);
 }
 
-sub isdbg
+sub isdbg($)
+{
+       return unless $fp;
+       return $dbglevel{$_[0]};
+}
+
+sub shortmess 
+{
+       return Carp::shortmess(@_);
+}
+
+sub longmess 
+{ 
+       return Carp::longmess(@_);
+}
+
+# clean out old debug files, stop when you get a gap of more than a month
+sub dbgclean
 {
-       my $s = shift;
-       return $dbglevel{$s};
+       my $date = $fp->unixtoj($main::systime)->sub($keepdays+1);
+       my $i = 0;
+
+       while ($i < 31) {
+               my $fn = $fp->_genfn($date);
+               if (-e $fn) {
+                       unlink $fn;
+                       $i = 0;
+               } else {
+                       $i++;
+               }
+               $date = $date->sub(1);
+       }
 }
+
 1;
 __END__
+
+
+
+
+
+
+