indicate limited results in stats

[barcat.git] / barcat

diff --git a/barcat b/barcat
index aec811bc97dca30ae8052a07d9fa0ee29854e744..c9b36cacfd853edf56dbae87ef11fc98735fb0e7 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -92,6 +92,8 @@ while (readline) {
 
 $SIG{INT} = 'DEFAULT';
 
+my @order;
+
 sub show_lines {
 
 state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
@@ -99,9 +101,9 @@ state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
 @lines or return;
 @lines > $nr or return unless $opt{hidemin};
 
-my @order  = sort { $b <=> $a } grep { length } @values;
-my $maxval = $opt{hidemax} ? max @values[0 .. $opt{hidemax} - 1] : $order[0];
-my $minval = min $order[-1], 0;
+@order  = sort { $b <=> $a } grep { length } @values;
+my $maxval = ($opt{hidemax} ? max grep { length } @values[0 .. $opt{hidemax} - 1] : $order[0]) // 0;
+my $minval = min $order[-1] // (), 0;
 my $lenval = $opt{'value-length'} // max map { length } @order;
 my $len    = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
        max map { length $values[$_] && length $lines[$_] }
@@ -169,7 +171,16 @@ while ($nr <= $#lines) {
 show_lines();
 
 if ($opt{stat}) {
-       printf '%d values', scalar @values;
+       if ($opt{hidemin} or $opt{hidemax}) {
+               $opt{hidemin} ||= 1;
+               $opt{hidemax} ||= @lines;
+               printf '%s of ', sum(@values[$opt{hidemin} - 1 .. $opt{hidemax} - 1]) // 0;
+       }
+       my $total = sum @order;
+       printf '%s total', $total;
+       printf ' in %d values', scalar @values;
+       printf ' (%s min, %*.*f avg, %s max)',
+               $order[-1], 0, 2, $total / @order, $order[0];
        say '';
 }
 
@@ -346,9 +357,9 @@ Git statistics, such commit count by year:
 
     git log --pretty=%ci | cut -b-4 | uniq -c | barcat
 
-Or the most frequent authors:
+Or the top 3 most frequent authors with statistics over all:
 
-    git shortlog -sn | barcat -L3
+    git shortlog -sn | barcat -L3 -s
 
 Latency history: