ustr

   1 #!/usr/bin/env perl
   2
   3 #=======================================================================
   4 # ustr
   5 # File ID: 3c899bbc-5d49-11df-b62a-90e6ba3022ac
   6 #
   7 # Inserts a COMBINING LOW LINE (U+0332, "◌̲") after every character
   8 # except newline (\n).
   9 #
  10 # Character set: UTF-8
  11 # ©opyleft 2004– Øyvind A. Holm <sunny@sunbase.org>
  12 # License: GNU General Public License version 2 or later, see end of
  13 # file for legal stuff.
  14 #=======================================================================
  15
  16 use strict;
  17 use warnings;
  18 use utf8;
  19 use Getopt::Long;
  20 use open ':std', ':encoding(UTF-8)';
  21
  22 local $| = 1;
  23
  24 our %Opt = (
  25
  26     'help' => 0,
  27     'quiet' => 0,
  28     'strikethrough' => 0,
  29     'verbose' => 0,
  30     'version' => 0,
  31
  32 );
  33
  34 our $progname = $0;
  35 $progname =~ s/^.*\/(.*?)$/$1/;
  36 our $VERSION = '0.1.0';
  37
  38 Getopt::Long::Configure('bundling');
  39 GetOptions(
  40
  41     'help|h' => \$Opt{'help'},
  42     'quiet|q+' => \$Opt{'quiet'},
  43     'strikethrough|s' => \$Opt{'strikethrough'},
  44     'verbose|v+' => \$Opt{'verbose'},
  45     'version' => \$Opt{'version'},
  46
  47 ) || die("$progname: Option error. Use -h for help.\n");
  48
  49 $Opt{'verbose'} -= $Opt{'quiet'};
  50 $Opt{'help'} && usage(0);
  51 if ($Opt{'version'}) {
  52     print_version();
  53     exit(0);
  54 }
  55
  56 exit(main());
  57
  58 sub main {
  59     # {{{
  60     my $Retval = 0;
  61     my $combchar = "\x{0332}";
  62
  63     if ($Opt{'strikethrough'}) {
  64         $combchar = "\x{0336}";
  65     }
  66     while (<>) {
  67         s/([^\n])/$1$combchar/g;
  68         print;
  69     }
  70
  71     return $Retval;
  72     # }}}
  73 } # main()
  74
  75 sub print_version {
  76     # Print program version {{{
  77     print("$progname $VERSION\n");
  78     return;
  79     # }}}
  80 } # print_version()
  81
  82 sub usage {
  83     # Send the help message to stdout {{{
  84     my $Retval = shift;
  85
  86     if ($Opt{'verbose'}) {
  87         print("\n");
  88         print_version();
  89     }
  90     print(<<"END");
  91
  92 Usage: $progname [options] [file [files [...]]]
  93
  94 Options:
  95
  96   -h, --help
  97     Show this help.
  98   -q, --quiet
  99     Be more quiet. Can be repeated to increase silence.
 100   -s, --strikethrough
 101     Use strikethrough (U+0336, '1̶2̶3̶ ̶a̶b̶c̶') instead of underline.
 102   -v, --verbose
 103     Increase level of verbosity. Can be repeated.
 104   --version
 105     Print version information.
 106
 107 END
 108     exit($Retval);
 109     # }}}
 110 } # usage()
 111
 112 sub msg {
 113     # Print a status message to stderr based on verbosity level {{{
 114     my ($verbose_level, $Txt) = @_;
 115
 116     if ($Opt{'verbose'} >= $verbose_level) {
 117         print(STDERR "$progname: $Txt\n");
 118     }
 119     return;
 120     # }}}
 121 } # msg()
 122
 123 __END__
 124
 125 # This program is free software; you can redistribute it and/or modify
 126 # it under the terms of the GNU General Public License as published by
 127 # the Free Software Foundation; either version 2 of the License, or (at
 128 # your option) any later version.
 129 #
 130 # This program is distributed in the hope that it will be useful, but
 131 # WITHOUT ANY WARRANTY; without even the implied warranty of
 132 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 133 # See the GNU General Public License for more details.
 134 #
 135 # You should have received a copy of the GNU General Public License
 136 # along with this program.
 137 # If not, see L<http://www.gnu.org/licenses/>.
 138
 139 # vim: set fenc=UTF-8 ft=perl fdm=marker ts=4 sw=4 sts=4 et fo+=w :