trim (-l) option to abbreviate contents

diff --git a/graph b/graph
index 312effeff4f6d53a785a02aacd2e453af3a09300..7118dc198a373b799c99065a147d75c8f5604e91 100755 (executable)
--- a/graph
+++ b/graph
@@ -1,7 +1,8 @@
 #!/usr/bin/env perl
 use 5.014;
 use warnings;
 #!/usr/bin/env perl
 use 5.014;
 use warnings;

-use List::Util qw( max sum );
+use utf8;
+use List::Util qw( min max sum );

 use open qw( :std :utf8 );
 
 our $VERSION = '1.00';
 use open qw( :std :utf8 );
 
 our $VERSION = '1.00';


@@ -10,6 +11,7 @@ use Getopt::Long '2.33', qw( :config gnu_getopt );
 sub podexit { require Pod::Usage; Pod::Usage::pod2usage(-exitval => 0, @_) }
 GetOptions(\my %opt,
        'color|c!',
 sub podexit { require Pod::Usage; Pod::Usage::pod2usage(-exitval => 0, @_) }
 GetOptions(\my %opt,
        'color|c!',

+       'trim|length|l=i',

        'markers|m=s',
        'width|w=i',
        'usage|h' => sub { podexit() },
        'markers|m=s',
        'width|w=i',
        'usage|h' => sub { podexit() },


@@ -17,16 +19,19 @@ GetOptions(\my %opt,
 ) or exit 64;  # EX_USAGE
 $opt{width} ||= $ENV{COLUMNS} || 80;
 $opt{color} //= 1;
 ) or exit 64;  # EX_USAGE
 $opt{width} ||= $ENV{COLUMNS} || 80;
 $opt{color} //= 1;

+$opt{trim} //= 0;

 
 my @lines = readline or exit;
 chomp for @lines;
 my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
 my @order  = sort { $b <=> $a } grep { length } @values;
 
 my @lines = readline or exit;
 chomp for @lines;
 my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
 my @order  = sort { $b <=> $a } grep { length } @values;

+length > $opt{trim} + 1 and substr($_, $opt{trim}) = '…' for @lines;
+

 my $maxval = $order[0];
 my $minval = min $order[-1], 0;
 my $maxval = $order[0];
 my $minval = min $order[-1], 0;

-

 my $lenval = max map { length } @order;
 my $lenval = max map { length } @order;

-my $len    = 1 + max map { length } @lines;  # left padding
+my $len    = $opt{trim} ? $opt{trim} + 2 :
+       1 + max map { length } @lines;  # left padding

 my $size   = ($maxval - $minval) &&
        ($opt{width} - $lenval - $len) / ($maxval - $minval);  # bar multiplication
 
 my $size   = ($maxval - $minval) &&
        ($opt{width} - $lenval - $len) / ($maxval - $minval);  # bar multiplication
 


@@ -77,6 +82,12 @@ Each line starting with a number is given a bar to visualise relative sizes.
 
 Disable colored output of values and bar markers.
 
 
 Disable colored output of values and bar markers.
 

+=item -l, --length=<size>
+
+Trim line contents (between number and bars)
+to a maximum number of characters.
+The exceeding part is replaced by an abbreviation sign.
+

 =item -m, --markers=
 
 Statistical positions to indicate on bars.
 =item -m, --markers=
 
 Statistical positions to indicate on bars.