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#!/usr/bin/env perl
# $Id$
# Public domain. Originally written by Andreas Scherer, 2023.
use strict;
use warnings;
use File::Basename;
use Getopt::Long qw(:config no_ignore_case bundling);
use Pod::Usage;
my $progname;
my $collator;
BEGIN {
$progname = basename $0;
# Unicode::Collate has been around a long time,
# but it's not part of core Perl.
eval {
require Unicode::Collate;
$collator = Unicode::Collate->new();
};
}
my $usage = "Usage: $progname < input_file > output_file\n";
# Standard options for TeX Live.
Getopt::Long::GetOptions(
'help|?' => \&help_handler,
'version' => sub { print version(); exit 0; }
) or die $usage;
## help_handler()
sub help_handler {
open(my $pipe, '|-', $ENV{PAGER} || 'less -e') or exit 1;
pod2usage(-message => version(), -output => $pipe,
-verbose => 99, -sections => "SHORT DESCRIPTION|EXAMPLE|COPYRIGHT");
close $pipe;
exit 0;
}
## version()
sub version {
return $progname.' $Revision$ $Date$'."\n";
}
# Read input from the console and look for blocks like
# \mini
# [LOCATION KEY TEXPART]*
# }\FI
# and sort them alphabetically by the KEYs.
#
# Every KEY contains a single C identifier (variable, type, function, etc.),
# either as a single brace-enclosed argument of a TeX control sequence,
# or as a single identifier in $math_mode$; the latter come from '@f'ormat
# definitions. All internal backslashes are removed from the KEY before it
# is used in the storage.
my %mini_index; # storage for index entries of a section
my $print_index = 0; # do we collect and print a mini-index?
foreach my $line (<STDIN>)
{
if ("\\mini\n" eq $line) { # start of mini-index
$print_index = 1;
%mini_index = (); # reset mini-index storage
} elsif ("}\\FI\n" eq $line) { # end of mini-index
foreach my $key ($collator ?
$collator->sort(keys %mini_index) :
sort {"\L$a" cmp "\L$b"} keys %mini_index) {
print $mini_index{$key};
}
$print_index = 0;
} elsif ($print_index) { # mini-index entry
my (undef,$key) = split / /, $line; # 2nd column is the key
$key =~ s/\\//g; # strip internal TeX escape(s)
$key =~ m/\w*\{(\w+)\}/; # extract plain key from control seq.
$key =~ m/\$(\w+)\$/ unless defined $1; # extract @f TeX key
$mini_index{$1} = $line; # store index entry
next; # print later
}
print $line;
}
exit 0;
=pod
=encoding utf8
=head1 NAME
ctwill-proofsort - Sort mini-indexes alphabetically
=head1 SHORT DESCRIPTION
This small Perl script 'ctwill-proofsort' sorts the mini-indexes for each
section in the TeX file created by 'ctwill +P', i.e., prior to
formatting with the 'ctproofmac.tex' macros.
It reads its input from <STDIN> and writes its output to <STDOUT>.
=over
=item Run CTWILL twice on your 'input_file'.w, creating 'input_file'.tex
=item Invoke "ctwill-proofsort < 'input_file'.tex > 'input_file'-sorted.tex"
=item Invoke "mv 'input_file'-sorted.tex 'input_file'.tex"
=item Run TeX on 'input_file'.tex
=back
See also "man ctwill" for more information on how to use the CTWILL system,
both with or without the '+P' option.
=head1 EXAMPLE
Example from MMIX (https://github.com/ascherer/mmix, 'local' branch):
=over
=item $ tie -c mmotype-twill.ch mmotype.{w,ch} mmotype-mini.ch
=item $ ctwill +P -x mmotype mmotype-twill (run this two times)
=item $ ctwill-proofsort < mmotype.tex > mmotype-sorted.tex
=item $ mv mmotype-sorted.tex mmotype.tex
=item $ tex mmotype
=back
=head1 COPYRIGHT
Public domain. Originally written by Andreas Scherer, 2023.
Contemporary development on https://github.com/ascherer/cwebbin.
=cut
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