X-Git-Url: http://git.shiar.nl/barcat.git/blobdiff_plain/4644846ee87e7e9eaa30ec40d679d0e02afd8d14..754ddc0faff70513c78277dd2d81c44849b31619:/graph

diff --git a/graph b/graph
index ab51d08..307c9e4 100755
--- a/graph
+++ b/graph
@@ -1,9 +1,10 @@
 #!/usr/bin/env perl
-use 5.014;
+use 5.018;
 use warnings;
 use utf8;
 use List::Util qw( min max sum );
 use open qw( :std :utf8 );
+use experimental qw( lexical_subs );
 
 our $VERSION = '1.02';
 
@@ -17,6 +18,7 @@ GetOptions(\my %opt,
 	'follow|f:i',
 	'trim|length|l=i',
 	'markers|m=s',
+	'unmodified|u!',
 	'width|w=i',
 	'usage|h' => sub { podexit() },
 	'help'    => sub { podexit(-verbose => 2) },
@@ -38,8 +40,9 @@ $SIG{INT} = 'IGNORE';  # continue after assumed eof
 
 my (@lines, @values);
 while (readline) {
-	chomp;
-	push @values, s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x && $1;
+	s/\r?\n\z//;
+	s/^\h*// unless $opt{unmodified};
+	push @values, s/^ ( \h* -? [0-9]* \.? [0-9]+ |)//x && $1;
 	if (defined $opt{trim}) {
 		my $trimpos = abs $opt{trim};
 		if ($trimpos <= 1) {
@@ -51,13 +54,13 @@ while (readline) {
 	}
 	push @lines, $_;
 }
-@lines or exit;
 
 $SIG{INT} = 'DEFAULT';
 
 sub show_lines {
 
 state $nr = 0;
+@lines and @lines > $nr or return;
 
 my @order  = sort { $b <=> $a } grep { length } @values;
 my $maxval = $order[0];
@@ -183,6 +186,11 @@ or 68% of all entries.
 
 =back
 
+=item -u, --unmodified
+
+Do not strip leading whitespace.
+Keep original value alignment, which may be significant in some programs.
+
 =item -w, --width=<columns>
 
 Override the maximum number of columns to use.
@@ -217,7 +225,7 @@ Number of HTTP requests per day:
 Any kind of database query with leading counts:
 
     echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
-    psql -t | graph
+    psql -t | graph -u
 
 Git statistics, such commit count by year: