X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXLogPrint.pm;h=a6d074a6a64bfd78c768dae4e7388126f537117f;hb=8e14149148baba63ce5ae2b95aacda8ab6dd0d87;hp=ded2f6186a783e27eb865a1eb02d1309efa2c308;hpb=abbcfa7500858a2eba4135b0af5db9f3fca8d68e;p=spider.git

diff --git a/perl/DXLogPrint.pm b/perl/DXLogPrint.pm
index ded2f618..a6d074a6 100644
--- a/perl/DXLogPrint.pm
+++ b/perl/DXLogPrint.pm
@@ -8,13 +8,23 @@
 
 package DXLog;
 
+use 5.10.1;
+
 use IO::File;
 use DXVars;
 use DXDebug qw(dbg isdbg);
 use DXUtil;
 use DXLog;
 use Julian;
-use RingBuf;
+
+
+our $readback = $main::is_win ? 0 : 1;
+if ($readback) {
+	$readback = `which tac`;
+} 
+chomp $readback;
+#undef $readback; 				# yet another reason not to use the cloud!
+ 
 
 use strict;
 
@@ -26,11 +36,11 @@ $maxmonths = 36;
 #
 # This command outputs a list of n lines starting from time t with $pattern tags
 #
-sub print
+sub search
 {
 	my $fcb = $DXLog::log;
-	my $from = shift || 0;
-	my $to = shift || 10;
+	my $from = shift // 0;
+	my $to = shift // 10;
 	my $jdate = $fcb->unixtoj(shift);
 	my $pattern = shift;
 	my $who = shift;
@@ -42,24 +52,28 @@ sub print
 	my $hint = "";
 	    
 	$who = uc $who if defined $who;
+
+	dbg("from: $from to: $to pattern: $pattern hint: $hint") if isdbg('search');
 	
 	if ($pattern) {
-		$hint = "m{\\Q$pattern\\E}i";
+		$hint = qq{m{\Q$pattern\E}i};
 	} else {
-		$hint = "!m{\\^(?:ann|rcmd|talk|chat)\\^}";
+		$hint = q{!m{\^(?:ann|rcmd|talk|chat)\^}};
 	}
 	if ($who) {
 		$hint .= ' && ' if $hint;
-		$hint .= 'm{\\Q$who\\E}i';
+		$hint .= q{m{\Q$who\E}i};
 	} 
 	$hint = "next unless $hint" if $hint;
-	$hint .= ";next unless /^\\d+\\^$pattern\\^/" if $pattern;
+	$hint .= "; next unless m{^\\d+\\^$pattern\\^}i" if $pattern;
 	$hint ||= "";
 	
 	$eval = qq(while (<\$fh>) {
 				   $hint;
 				   chomp;
-				   \$ring->write(\$_);
+                   # say "line: \$_";
+				   push \@in, \$_;
+                   last L1 if \@in >= $tot;
 			   } );
 	
 	if (isdbg('search')) {
@@ -70,30 +84,50 @@ sub print
 	$fcb->close;                                      # close any open files
 
 	my $months;
-	my $fh = $fcb->open($jdate); 
- L1: for ($months = 0; $months < $maxmonths && @in < $tot; $months++) {
+	my $fh;
+	if ($readback) {
+		my $fn = $fcb->fn($jdate);
+		$fh = IO::File->new("$readback $fn |");
+	} else {
+		$fh = $fcb->open($jdate); 	
+	}
+ L1: for ($months = 0; $fh && $months < $maxmonths && @in < $tot; $months++) {
 		my $ref;
-		my $ring = RingBuf->new($tot);
 
 		if ($fh) {
 			my @tmp;
 			eval $eval;               # do the search on this file
 			return ("Log search error", $@) if $@;
-			
-			@in = ($ring->readall, @in);
-			last L1 if @in >= $tot;
 		}
 
-		$fh = $fcb->openprev();      # get the next file
-		last if !$fh;
+		if ($readback) {
+			my $fn = $fcb->fn($jdate->sub(1));
+			$fh = IO::File->new("$readback $fn |");
+		} else {
+			$fh = $fcb->openprev();      # get the next file
+		}
 	}
-	
-	@in = splice @in, -$tot, $tot if @in > $tot;
-    
+
+	unless (@in) {
+		my $name = $pattern ? $pattern : "log";
+		my $s = "$who "|| '';
+		return "show/$name: ${s}not found";
+	} 
+
+	for (sort {$a cmp $b } @in) {
+		push @out, [ split /\^/ ]
+	}
+
+	return @out;
+}
+
+sub print
+{
+	my @out;
+
+	my @in = search(@_);
 	for (@in) {
-		my @line = split /\^/ ;
-		push @out, print_item(\@line);
-	
+		push @out, print_item($_);
 	}
 	return @out;
 }