wpt-line

   1 #!/usr/bin/env perl
   2
   3 #=======================================================================
   4 # wpt-line
   5 # File ID: c1b91d20-621b-11e1-8d08-23fe5446b5f1
   6 # Convert <wpt> or other elements to/from single lines
   7 #
   8 # Character set: UTF-8
   9 # ©opyleft 2012– Øyvind A. Holm <sunny@sunbase.org>
  10 # License: GNU General Public License version 3 or later, see end of
  11 # file for legal stuff.
  12 #=======================================================================
  13
  14 use strict;
  15 use warnings;
  16 use Getopt::Long;
  17
  18 local $| = 1;
  19
  20 our $Debug = 0;
  21
  22 our %Opt = (
  23
  24     'debug' => 0,
  25     'element' => 'wpt',
  26     'help' => 0,
  27     'split' => 0,
  28     'verbose' => 0,
  29     'version' => 0,
  30
  31 );
  32
  33 our $progname = $0;
  34 $progname =~ s/^.*\/(.*?)$/$1/;
  35 our $VERSION = '0.00';
  36
  37 Getopt::Long::Configure('bundling');
  38 GetOptions(
  39
  40     'debug' => \$Opt{'debug'},
  41     'element|e=s' => \$Opt{'element'},
  42     'help|h' => \$Opt{'help'},
  43     'split|s' => \$Opt{'split'},
  44     'verbose|v+' => \$Opt{'verbose'},
  45     'version' => \$Opt{'version'},
  46
  47 ) || die("$progname: Option error. Use -h for help.\n");
  48
  49 $Opt{'debug'} && ($Debug = 1);
  50 $Opt{'help'} && usage(0);
  51 if ($Opt{'version'}) {
  52     print_version();
  53     exit(0);
  54 }
  55
  56 my $slurp = join('', <>);
  57
  58 if ($Opt{'split'}) {
  59     $slurp =~ s/&lf;/\n/gs;
  60 } else {
  61     $slurp =~ s/(<$Opt{'element'}\b.*?<\/$Opt{'element'}>)/oneline($1)/gse;
  62 }
  63
  64 print $slurp;
  65
  66 sub oneline {
  67     my $txt = shift;
  68     $txt =~ s/\n/&lf;/gs;
  69     return($txt);
  70 }
  71
  72 sub print_version {
  73     # Print program version {{{
  74     print("$progname v$VERSION\n");
  75     return;
  76     # }}}
  77 } # print_version()
  78
  79 sub usage {
  80     # Send the help message to stdout {{{
  81     my $Retval = shift;
  82
  83     if ($Opt{'verbose'}) {
  84         print("\n");
  85         print_version();
  86     }
  87     print(<<"END");
  88
  89 Usage: $progname [options] [file [files [...]]]
  90
  91 Convert <wpt> or other elements to/from single lines. For removing
  92 duplicates, etc.
  93
  94 Options:
  95
  96   -e X, --element X
  97     Convert lines between element X. Default: 'wpt'.
  98   -h, --help
  99     Show this help.
 100   -s, --split
 101     Split oneliners into several lines again.
 102   -v, --verbose
 103     Increase level of verbosity. Can be repeated.
 104   --version
 105     Print version information.
 106   --debug
 107     Print debugging messages.
 108
 109 END
 110     exit($Retval);
 111     # }}}
 112 } # usage()
 113
 114 sub msg {
 115     # Print a status message to stderr based on verbosity level {{{
 116     my ($verbose_level, $Txt) = @_;
 117
 118     if ($Opt{'verbose'} >= $verbose_level) {
 119         print(STDERR "$progname: $Txt\n");
 120     }
 121     return;
 122     # }}}
 123 } # msg()
 124
 125 sub D {
 126     # Print a debugging message {{{
 127     $Debug || return;
 128     my @call_info = caller;
 129     chomp(my $Txt = shift);
 130     my $File = $call_info[1];
 131     $File =~ s#\\#/#g;
 132     $File =~ s#^.*/(.*?)$#$1#;
 133     print(STDERR "$File:$call_info[2] $$ $Txt\n");
 134     return('');
 135     # }}}
 136 } # D()
 137
 138 __END__
 139
 140 # Plain Old Documentation (POD) {{{
 141
 142 =pod
 143
 144 =head1 NAME
 145
 146
 147
 148 =head1 SYNOPSIS
 149
 150  [options] [file [files [...]]]
 151
 152 =head1 DESCRIPTION
 153
 154
 155
 156 =head1 OPTIONS
 157
 158 =over 4
 159
 160 =item B<-h>, B<--help>
 161
 162 Print a brief help summary.
 163
 164 =item B<-v>, B<--verbose>
 165
 166 Increase level of verbosity. Can be repeated.
 167
 168 =item B<--version>
 169
 170 Print version information.
 171
 172 =item B<--debug>
 173
 174 Print debugging messages.
 175
 176 =back
 177
 178 =head1 BUGS
 179
 180
 181
 182 =head1 AUTHOR
 183
 184 Made by Øyvind A. Holm S<E<lt>sunny@sunbase.orgE<gt>>.
 185
 186 =head1 COPYRIGHT
 187
 188 Copyleft © Øyvind A. Holm E<lt>sunny@sunbase.orgE<gt>
 189 This is free software; see the file F<COPYING> for legalese stuff.
 190
 191 =head1 LICENCE
 192
 193 This program is free software: you can redistribute it and/or modify it
 194 under the terms of the GNU General Public License as published by the
 195 Free Software Foundation, either version 3 of the License, or (at your
 196 option) any later version.
 197
 198 This program is distributed in the hope that it will be useful, but
 199 WITHOUT ANY WARRANTY; without even the implied warranty of
 200 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 201 See the GNU General Public License for more details.
 202
 203 You should have received a copy of the GNU General Public License along
 204 with this program.
 205 If not, see L<http://www.gnu.org/licenses/>.
 206
 207 =head1 SEE ALSO
 208
 209 =cut
 210
 211 # }}}
 212
 213 # vim: set fenc=UTF-8 ft=perl fdm=marker ts=4 sw=4 sts=4 et fo+=w :