+++ /dev/null
-
-require 5;
-package Sort::Naturally; # Time-stamp: "2004-12-29 18:30:03 AST"
-$VERSION = '1.02';
-@EXPORT = ('nsort', 'ncmp');
-require Exporter;
-@ISA = ('Exporter');
-
-use strict;
-use locale;
-use integer;
-
-#-----------------------------------------------------------------------------
-# constants:
-BEGIN { *DEBUG = sub () {0} unless defined &DEBUG }
-
-use Config ();
-BEGIN {
- # Make a constant such that if a whole-number string is that long
- # or shorter, we KNOW it's treatable as an integer
- no integer;
- my $x = length(256 ** $Config::Config{'intsize'} / 2) - 1;
- die "Crazy intsize: <$Config::Config{'intsize'}>" if $x < 4;
- eval 'sub MAX_INT_SIZE () {' . $x . '}';
- die $@ if $@;
- print "intsize $Config::Config{'intsize'} => MAX_INT_SIZE $x\n" if DEBUG;
-}
-
-sub X_FIRST () {-1}
-sub Y_FIRST () { 1}
-
-my @ORD = ('same', 'swap', 'asis');
-
-#-----------------------------------------------------------------------------
-# For lack of a preprocessor:
-
-my($code, $guts);
-$guts = <<'EOGUTS'; # This is the guts of both ncmp and nsort:
-
- if($x eq $y) {
- # trap this expensive case first, and then fall thru to tiebreaker
- $rv = 0;
-
- # Convoluted hack to get numerics to sort first, at string start:
- } elsif($x =~ m/^\d/s) {
- if($y =~ m/^\d/s) {
- $rv = 0; # fall thru to normal comparison for the two numbers
- } else {
- $rv = X_FIRST;
- DEBUG > 1 and print "Numeric-initial $x trumps letter-initial $y\n";
- }
- } elsif($y =~ m/^\d/s) {
- $rv = Y_FIRST;
- DEBUG > 1 and print "Numeric-initial $y trumps letter-initial $x\n";
- } else {
- $rv = 0;
- }
-
- unless($rv) {
- # Normal case:
- $rv = 0;
- DEBUG and print "<$x> and <$y> compared...\n";
-
- Consideration:
- while(length $x and length $y) {
-
- DEBUG > 2 and print " <$x> and <$y>...\n";
-
- # First, non-numeric comparison:
- $x2 = ($x =~ m/^(\D+)/s) ? length($1) : 0;
- $y2 = ($y =~ m/^(\D+)/s) ? length($1) : 0;
- # Now make x2 the min length of the two:
- $x2 = $y2 if $x2 > $y2;
- if($x2) {
- DEBUG > 1 and printf " <%s> and <%s> lexically for length $x2...\n",
- substr($x,0,$x2), substr($y,0,$x2);
- do {
- my $i = substr($x,0,$x2);
- my $j = substr($y,0,$x2);
- my $sv = $i cmp $j;
- print "SCREAM! on <$i><$j> -- $sv != $rv \n" unless $rv == $sv;
- last;
- }
-
-
- if $rv =
- # The ''. things here force a copy that seems to work around a
- # mysterious intermittent bug that 'use locale' provokes in
- # many versions of Perl.
- $cmp
- ? $cmp->(substr($x,0,$x2) . '',
- substr($y,0,$x2) . '',
- )
- :
- scalar(( substr($x,0,$x2) . '' ) cmp
- ( substr($y,0,$x2) . '' )
- )
- ;
- # otherwise trim and keep going:
- substr($x,0,$x2) = '';
- substr($y,0,$x2) = '';
- }
-
- # Now numeric:
- # (actually just using $x2 and $y2 as scratch)
-
- if( $x =~ s/^(\d+)//s ) {
- $x2 = $1;
- if( $y =~ s/^(\d+)//s ) {
- # We have two numbers here.
- DEBUG > 1 and print " <$x2> and <$1> numerically\n";
- if(length($x2) < MAX_INT_SIZE and length($1) < MAX_INT_SIZE) {
- # small numbers: we can compare happily
- last if $rv = $x2 <=> $1;
- } else {
- # ARBITRARILY large integers!
-
- # This saves on loss of precision that could happen
- # with actual stringification.
- # Also, I sense that very large numbers aren't too
- # terribly common in sort data.
-
- # trim leading 0's:
- ($y2 = $1) =~ s/^0+//s;
- $x2 =~ s/^0+//s;
- print " Treating $x2 and $y2 as bigint\n" if DEBUG;
-
- no locale; # we want the dumb cmp back.
- last if $rv = (
- # works only for non-negative whole numbers:
- length($x2) <=> length($y2)
- # the longer the numeral, the larger the value
- or $x2 cmp $y2
- # between equals, compare lexically!! amazing but true.
- );
- }
- } else {
- # X is numeric but Y isn't
- $rv = Y_FIRST;
- last;
- }
- } elsif( $y =~ s/^\d+//s ) { # we don't need to capture the substring
- $rv = X_FIRST;
- last;
- }
- # else one of them is 0-length.
-
- # end-while
- }
- }
-EOGUTS
-
-sub maker {
- my $code = $_[0];
- $code =~ s/~COMPARATOR~/$guts/g || die "Can't find ~COMPARATOR~";
- eval $code;
- die $@ if $@;
-}
-
-##############################################################################
-
-maker(<<'EONSORT');
-sub nsort {
- # get options:
- my($cmp, $lc);
- ($cmp,$lc) = @{shift @_} if @_ and ref($_[0]) eq 'ARRAY';
-
- return @_ unless @_ > 1 or wantarray; # be clever
-
- my($x, $x2, $y, $y2, $rv); # scratch vars
-
- # We use a Schwartzian xform to memoize the lc'ing and \W-removal
-
- map $_->[0],
- sort {
- if($a->[0] eq $b->[0]) { 0 } # trap this expensive case
- else {
-
- $x = $a->[1];
- $y = $b->[1];
-
-~COMPARATOR~
-
- # Tiebreakers...
- DEBUG > 1 and print " -<${$a}[0]> cmp <${$b}[0]> is $rv ($ORD[$rv])\n";
- $rv ||= (length($x) <=> length($y)) # shorter is always first
- || ($cmp and $cmp->($x,$y) || $cmp->($a->[0], $b->[0]))
- || ($x cmp $y )
- || ($a->[0] cmp $b->[0])
- ;
-
- DEBUG > 1 and print " <${$a}[0]> cmp <${$b}[0]> is $rv ($ORD[$rv])\n";
- $rv;
- }}
-
- map {;
- $x = $lc ? $lc->($_) : lc($_); # x as scratch
- $x =~ s/\W+//s;
- [$_, $x];
- }
- @_
-}
-EONSORT
-
-#-----------------------------------------------------------------------------
-maker(<<'EONCMP');
-sub ncmp {
- # The guts are basically the same as above...
-
- # get options:
- my($cmp, $lc);
- ($cmp,$lc) = @{shift @_} if @_ and ref($_[0]) eq 'ARRAY';
-
- if(@_ == 0) {
- @_ = ($a, $b); # bit of a hack!
- DEBUG > 1 and print "Hacking in <$a><$b>\n";
- } elsif(@_ != 2) {
- require Carp;
- Carp::croak("Not enough options to ncmp!");
- }
- my($a,$b) = @_;
- my($x, $x2, $y, $y2, $rv); # scratch vars
-
- DEBUG > 1 and print "ncmp args <$a><$b>\n";
- if($a eq $b) { # trap this expensive case
- 0;
- } else {
- $x = ($lc ? $lc->($a) : lc($a));
- $x =~ s/\W+//s;
- $y = ($lc ? $lc->($b) : lc($b));
- $y =~ s/\W+//s;
-
-~COMPARATOR~
-
-
- # Tiebreakers...
- DEBUG > 1 and print " -<$a> cmp <$b> is $rv ($ORD[$rv])\n";
- $rv ||= (length($x) <=> length($y)) # shorter is always first
- || ($cmp and $cmp->($x,$y) || $cmp->($a,$b))
- || ($x cmp $y)
- || ($a cmp $b)
- ;
-
- DEBUG > 1 and print " <$a> cmp <$b> is $rv\n";
- $rv;
- }
-}
-EONCMP
-
-# clean up:
-undef $guts;
-undef &maker;
-
-#-----------------------------------------------------------------------------
-1;
-
-############### END OF MAIN SOURCE ###########################################
-__END__
-
-=head1 NAME
-
-Sort::Naturally -- sort lexically, but sort numeral parts numerically
-
-=head1 SYNOPSIS
-
- @them = nsort(qw(
- foo12a foo12z foo13a foo 14 9x foo12 fooa foolio Foolio Foo12a
- ));
- print join(' ', @them), "\n";
-
-Prints:
-
- 9x 14 foo fooa foolio Foolio foo12 foo12a Foo12a foo12z foo13a
-
-(Or "foo12a" + "Foo12a" and "foolio" + "Foolio" and might be
-switched, depending on your locale.)
-
-=head1 DESCRIPTION
-
-This module exports two functions, C<nsort> and C<ncmp>; they are used
-in implementing my idea of a "natural sorting" algorithm. Under natural
-sorting, numeric substrings are compared numerically, and other
-word-characters are compared lexically.
-
-This is the way I define natural sorting:
-
-=over
-
-=item *
-
-Non-numeric word-character substrings are sorted lexically,
-case-insensitively: "Foo" comes between "fish" and "fowl".
-
-=item *
-
-Numeric substrings are sorted numerically:
-"100" comes after "20", not before.
-
-=item *
-
-\W substrings (neither words-characters nor digits) are I<ignored>.
-
-=item *
-
-Our use of \w, \d, \D, and \W is locale-sensitive: Sort::Naturally
-uses a C<use locale> statement.
-
-=item *
-
-When comparing two strings, where a numeric substring in one
-place is I<not> up against a numeric substring in another,
-the non-numeric always comes first. This is fudged by
-reading pretending that the lack of a number substring has
-the value -1, like so:
-
- foo => "foo", -1
- foobar => "foo", -1, "bar"
- foo13 => "foo", 13,
- foo13xyz => "foo", 13, "xyz"
-
-That's so that "foo" will come before "foo13", which will come
-before "foobar".
-
-=item *
-
-The start of a string is exceptional: leading non-\W (non-word,
-non-digit)
-components are are ignored, and numbers come I<before> letters.
-
-=item *
-
-I define "numeric substring" just as sequences matching m/\d+/ --
-scientific notation, commas, decimals, etc., are not seen. If
-your data has thousands separators in numbers
-("20,000 Leagues Under The Sea" or "20.000 lieues sous les mers"),
-consider stripping them before feeding them to C<nsort> or
-C<ncmp>.
-
-=back
-
-=head2 The nsort function
-
-This function takes a list of strings, and returns a copy of the list,
-sorted.
-
-This is what most people will want to use:
-
- @stuff = nsort(...list...);
-
-When nsort needs to compare non-numeric substrings, it
-uses Perl's C<lc> function in scope of a <use locale>.
-And when nsort needs to lowercase things, it uses Perl's
-C<lc> function in scope of a <use locale>. If you want nsort
-to use other functions instead, you can specify them in
-an arrayref as the first argument to nsort:
-
- @stuff = nsort( [
- \&string_comparator, # optional
- \&lowercaser_function # optional
- ],
- ...list...
- );
-
-If you want to specify a string comparator but no lowercaser,
-then the options list is C<[\&comparator, '']> or
-C<[\&comparator]>. If you want to specify no string comparator
-but a lowercaser, then the options list is
-C<['', \&lowercaser]>.
-
-Any comparator you specify is called as
-C<$comparator-E<gt>($left, $right)>,
-and, like a normal Perl C<cmp> replacement, must return
--1, 0, or 1 depending on whether the left argument is stringwise
-less than, equal to, or greater than the right argument.
-
-Any lowercaser function you specify is called as
-C<$lowercased = $lowercaser-E<gt>($original)>. The routine
-must not modify its C<$_[0]>.
-
-=head2 The ncmp function
-
-Often, when sorting non-string values like this:
-
- @objects_sorted = sort { $a->tag cmp $b->tag } @objects;
-
-...or even in a Schwartzian transform, like this:
-
- @strings =
- map $_->[0]
- sort { $a->[1] cmp $b->[1] }
- map { [$_, make_a_sort_key_from($_) ]
- @_
- ;
-
-...you wight want something that replaces not C<sort>, but C<cmp>.
-That's what Sort::Naturally's C<ncmp> function is for. Call it with
-the syntax C<ncmp($left,$right)> instead of C<$left cmp $right>,
-but otherwise it's a fine replacement:
-
- @objects_sorted = sort { ncmp($a->tag,$b->tag) } @objects;
-
- @strings =
- map $_->[0]
- sort { ncmp($a->[1], $b->[1]) }
- map { [$_, make_a_sort_key_from($_) ]
- @_
- ;
-
-Just as with C<nsort> can take different a string-comparator
-and/or lowercaser, you can do the same with C<ncmp>, by passing
-an arrayref as the first argument:
-
- ncmp( [
- \&string_comparator, # optional
- \&lowercaser_function # optional
- ],
- $left, $right
- )
-
-You might get string comparators from L<Sort::ArbBiLex|Sort::ArbBiLex>.
-
-=head1 NOTES
-
-=over
-
-=item *
-
-This module is not a substitute for
-L<Sort::Versions|Sort::Versions>! If
-you just need proper version sorting, use I<that!>
-
-=item *
-
-If you need something that works I<sort of> like this module's
-functions, but not quite the same, consider scouting thru this
-module's source code, and adapting what you see. Besides
-the functions that actually compile in this module, after the POD,
-there's several alternate attempts of mine at natural sorting
-routines, which are not compiled as part of the module, but which you
-might find useful. They should all be I<working> implementations of
-slightly different algorithms
-(all of them based on Martin Pool's C<nsort>) which I eventually
-discarded in favor of my algorithm. If you are having to
-naturally-sort I<very large> data sets, and sorting is getting
-ridiculously slow, you might consider trying one of those
-discarded functions -- I have a feeling they might be faster on
-large data sets. Benchmark them on your data and see. (Unless
-you I<need> the speed, don't bother. Hint: substitute C<sort>
-for C<nsort> in your code, and unless your program speeds up
-drastically, it's not the sorting that's slowing things down.
-But if it I<is> C<nsort> that's slowing things down, consider
-just:
-
- if(@set >= SOME_VERY_BIG_NUMBER) {
- no locale; # vroom vroom
- @sorted = sort(@set); # feh, good enough
- } elsif(@set >= SOME_BIG_NUMBER) {
- use locale;
- @sorted = sort(@set); # feh, good enough
- } else {
- # but keep it pretty for normal cases
- @sorted = nsort(@set);
- }
-
-=item *
-
-If you do adapt the routines in this module, email me; I'd
-just be interested in hearing about it.
-
-=item *
-
-Thanks to the EFNet #perl people for encouraging this module,
-especially magister and a-mused.
-
-=back
-
-=head1 COPYRIGHT AND DISCLAIMER
-
-Copyright 2001, Sean M. Burke C<sburke@cpan.org>, all rights
-reserved. This program is free software; you can redistribute it
-and/or modify it under the same terms as Perl itself.
-
-This program is distributed in the hope that it will be useful, but
-without any warranty; without even the implied warranty of
-merchantability or fitness for a particular purpose.
-
-=head1 AUTHOR
-
-Sean M. Burke C<sburke@cpan.org>
-
-=cut
-
-############ END OF DOCS ############
-
-############################################################################
-############################################################################
-
-############ BEGIN OLD STUFF ############
-
-# We can't have "use integer;", or else (5 <=> 5.1) comes out "0" !
-
-#-----------------------------------------------------------------------------
-sub nsort {
- my($cmp, $lc);
- return @_ if @_ < 2; # Just to be CLEVER.
-
- my($x, $i); # scratch vars
-
- # And now, the GREAT BIG Schwartzian transform:
-
- map
- $_->[0],
-
- sort {
- # Uses $i as the index variable, $x as the result.
- $x = 0;
- $i = 1;
- DEBUG and print "\nComparing ", map("{$_}", @$a),
- ' : ', map("{$_}", @$b), , "...\n";
-
- while($i < @$a and $i < @$b) {
- DEBUG and print " comparing $i: {$a->[$i]} cmp {$b->[$i]} => ",
- $a->[$i] cmp $b->[$i], "\n";
- last if ($x = ($a->[$i] cmp $b->[$i])); # lexicographic
- ++$i;
-
- DEBUG and print " comparing $i: {$a->[$i]} <=> {$b->[$i]} => ",
- $a->[$i] <=> $b->[$i], "\n";
- last if ($x = ($a->[$i] <=> $b->[$i])); # numeric
- ++$i;
- }
-
- DEBUG and print "{$a->[0]} : {$b->[0]} is ",
- $x || (@$a <=> @$b) || 0
- ,"\n"
- ;
- $x || (@$a <=> @$b) || ($a->[0] cmp $b->[0]);
- # unless we found a result for $x in the while loop,
- # use length as a tiebreaker, otherwise use cmp
- # on the original string as a fallback tiebreaker.
- }
-
- map {
- my @bit = ($x = defined($_) ? $_ : '');
-
- if($x =~ m/^[+-]?(?=\d|\.\d)\d*(?:\.\d*)?(?:[Ee](?:[+-]?\d+))?\z/s) {
- # It's entirely purely numeric, so treat it specially:
- push @bit, '', $x;
- } else {
- # Consume the string.
- while(length $x) {
- push @bit, ($x =~ s/^(\D+)//s) ? lc($1) : '';
- push @bit, ($x =~ s/^(\d+)//s) ? $1 : 0;
- }
- }
- DEBUG and print "$bit[0] => ", map("{$_} ", @bit), "\n";
-
- # End result: [original bit , (text, number), (text, number), ...]
- # Minimally: [0-length original bit,]
- # Examples:
- # ['10' => '' , 10, ]
- # ['fo900' => 'fo' , 900, ]
- # ['foo10' => 'foo', 10, ]
- # ['foo9.pl' => 'foo', 9, , '.pl', 0 ]
- # ['foo32.pl' => 'foo', 32, , '.pl', 0 ]
- # ['foo325.pl' => 'foo', 325, , '.pl', 0 ]
- # Yes, always an ODD number of elements.
-
- \@bit;
- }
- @_;
-}
-
-#-----------------------------------------------------------------------------
-# Same as before, except without the pure-number trap.
-
-sub nsorts {
- return @_ if @_ < 2; # Just to be CLEVER.
-
- my($x, $i); # scratch vars
-
- # And now, the GREAT BIG Schwartzian transform:
-
- map
- $_->[0],
-
- sort {
- # Uses $i as the index variable, $x as the result.
- $x = 0;
- $i = 1;
- DEBUG and print "\nComparing ", map("{$_}", @$a),
- ' : ', map("{$_}", @$b), , "...\n";
-
- while($i < @$a and $i < @$b) {
- DEBUG and print " comparing $i: {$a->[$i]} cmp {$b->[$i]} => ",
- $a->[$i] cmp $b->[$i], "\n";
- last if ($x = ($a->[$i] cmp $b->[$i])); # lexicographic
- ++$i;
-
- DEBUG and print " comparing $i: {$a->[$i]} <=> {$b->[$i]} => ",
- $a->[$i] <=> $b->[$i], "\n";
- last if ($x = ($a->[$i] <=> $b->[$i])); # numeric
- ++$i;
- }
-
- DEBUG and print "{$a->[0]} : {$b->[0]} is ",
- $x || (@$a <=> @$b) || 0
- ,"\n"
- ;
- $x || (@$a <=> @$b) || ($a->[0] cmp $b->[0]);
- # unless we found a result for $x in the while loop,
- # use length as a tiebreaker, otherwise use cmp
- # on the original string as a fallback tiebreaker.
- }
-
- map {
- my @bit = ($x = defined($_) ? $_ : '');
-
- while(length $x) {
- push @bit, ($x =~ s/^(\D+)//s) ? lc($1) : '';
- push @bit, ($x =~ s/^(\d+)//s) ? $1 : 0;
- }
- DEBUG and print "$bit[0] => ", map("{$_} ", @bit), "\n";
-
- # End result: [original bit , (text, number), (text, number), ...]
- # Minimally: [0-length original bit,]
- # Examples:
- # ['10' => '' , 10, ]
- # ['fo900' => 'fo' , 900, ]
- # ['foo10' => 'foo', 10, ]
- # ['foo9.pl' => 'foo', 9, , '.pl', 0 ]
- # ['foo32.pl' => 'foo', 32, , '.pl', 0 ]
- # ['foo325.pl' => 'foo', 325, , '.pl', 0 ]
- # Yes, always an ODD number of elements.
-
- \@bit;
- }
- @_;
-}
-
-#-----------------------------------------------------------------------------
-# Same as before, except for the sort-key-making
-
-sub nsort0 {
- return @_ if @_ < 2; # Just to be CLEVER.
-
- my($x, $i); # scratch vars
-
- # And now, the GREAT BIG Schwartzian transform:
-
- map
- $_->[0],
-
- sort {
- # Uses $i as the index variable, $x as the result.
- $x = 0;
- $i = 1;
- DEBUG and print "\nComparing ", map("{$_}", @$a),
- ' : ', map("{$_}", @$b), , "...\n";
-
- while($i < @$a and $i < @$b) {
- DEBUG and print " comparing $i: {$a->[$i]} cmp {$b->[$i]} => ",
- $a->[$i] cmp $b->[$i], "\n";
- last if ($x = ($a->[$i] cmp $b->[$i])); # lexicographic
- ++$i;
-
- DEBUG and print " comparing $i: {$a->[$i]} <=> {$b->[$i]} => ",
- $a->[$i] <=> $b->[$i], "\n";
- last if ($x = ($a->[$i] <=> $b->[$i])); # numeric
- ++$i;
- }
-
- DEBUG and print "{$a->[0]} : {$b->[0]} is ",
- $x || (@$a <=> @$b) || 0
- ,"\n"
- ;
- $x || (@$a <=> @$b) || ($a->[0] cmp $b->[0]);
- # unless we found a result for $x in the while loop,
- # use length as a tiebreaker, otherwise use cmp
- # on the original string as a fallback tiebreaker.
- }
-
- map {
- my @bit = ($x = defined($_) ? $_ : '');
-
- if($x =~ m/^[+-]?(?=\d|\.\d)\d*(?:\.\d*)?(?:[Ee](?:[+-]?\d+))?\z/s) {
- # It's entirely purely numeric, so treat it specially:
- push @bit, '', $x;
- } else {
- # Consume the string.
- while(length $x) {
- push @bit, ($x =~ s/^(\D+)//s) ? lc($1) : '';
- # Secret sauce:
- if($x =~ s/^(\d+)//s) {
- if(substr($1,0,1) eq '0' and $1 != 0) {
- push @bit, $1 / (10 ** length($1));
- } else {
- push @bit, $1;
- }
- } else {
- push @bit, 0;
- }
- }
- }
- DEBUG and print "$bit[0] => ", map("{$_} ", @bit), "\n";
-
- \@bit;
- }
- @_;
-}
-
-#-----------------------------------------------------------------------------
-# Like nsort0, but WITHOUT pure number handling, and WITH special treatment
-# of pulling off extensions and version numbers.
-
-sub nsortf {
- return @_ if @_ < 2; # Just to be CLEVER.
-
- my($x, $i); # scratch vars
-
- # And now, the GREAT BIG Schwartzian transform:
-
- map
- $_->[0],
-
- sort {
- # Uses $i as the index variable, $x as the result.
- $x = 0;
- $i = 3;
- DEBUG and print "\nComparing ", map("{$_}", @$a),
- ' : ', map("{$_}", @$b), , "...\n";
-
- while($i < @$a and $i < @$b) {
- DEBUG and print " comparing $i: {$a->[$i]} cmp {$b->[$i]} => ",
- $a->[$i] cmp $b->[$i], "\n";
- last if ($x = ($a->[$i] cmp $b->[$i])); # lexicographic
- ++$i;
-
- DEBUG and print " comparing $i: {$a->[$i]} <=> {$b->[$i]} => ",
- $a->[$i] <=> $b->[$i], "\n";
- last if ($x = ($a->[$i] <=> $b->[$i])); # numeric
- ++$i;
- }
-
- DEBUG and print "{$a->[0]} : {$b->[0]} is ",
- $x || (@$a <=> @$b) || 0
- ,"\n"
- ;
- $x || (@$a <=> @$b ) || ($a->[1] cmp $b->[1])
- || ($a->[2] <=> $b->[2]) || ($a->[0] cmp $b->[0]);
- # unless we found a result for $x in the while loop,
- # use length as a tiebreaker, otherwise use the
- # lc'd extension, otherwise the verison, otherwise use
- # the original string as a fallback tiebreaker.
- }
-
- map {
- my @bit = ( ($x = defined($_) ? $_ : ''), '',0 );
-
- {
- # Consume the string.
-
- # First, pull off any VAX-style version
- $bit[2] = $1 if $x =~ s/;(\d+)$//;
-
- # Then pull off any apparent extension
- if( $x !~ m/^\.+$/s and # don't mangle ".", "..", or "..."
- $x =~ s/(\.[^\.\;]*)$//sg
- # We could try to avoid catching all-digit extensions,
- # but I think that's getting /too/ clever.
- ) {
- $i = $1;
- if($x =~ m<[^\\\://]$>s) {
- # We didn't take the whole basename.
- $bit[1] = lc $i;
- DEBUG and print "Consuming extension \"$1\"\n";
- } else {
- # We DID take the whole basename. Fix it.
- $x = $1; # Repair it.
- }
- }
-
- push @bit, '', -1 if $x =~ m/^\./s;
- # A hack to make .-initial filenames sort first, regardless of locale.
- # And -1 is always a sort-firster, since in the code below, there's
- # no allowance for filenames containing negative numbers: -1.dat
- # will be read as string '-' followed by number 1.
-
- while(length $x) {
- push @bit, ($x =~ s/^(\D+)//s) ? lc($1) : '';
- # Secret sauce:
- if($x =~ s/^(\d+)//s) {
- if(substr($1,0,1) eq '0' and $1 != 0) {
- push @bit, $1 / (10 ** length($1));
- } else {
- push @bit, $1;
- }
- } else {
- push @bit, 0;
- }
- }
- }
-
- DEBUG and print "$bit[0] => ", map("{$_} ", @bit), "\n";
-
- \@bit;
- }
- @_;
-}
-
-# yowza yowza yowza.
-
projects / kivitendo-erp.git / blobdiff