[31456] | 1 | ###########################################################################
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| 2 | #
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| 3 | # EncodingUtil.pm -- base class for file and directory plugins - aims to
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| 4 | # handle all encoding stuff, to keep it in one place
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| 5 | # A component of the Greenstone digital library software
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| 6 | # from the New Zealand Digital Library Project at the
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| 7 | # University of Waikato, New Zealand.
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| 8 | #
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| 9 | # Copyright (C) 2017 New Zealand Digital Library Project
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| 10 | #
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| 11 | # This program is free software; you can redistribute it and/or modify
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| 12 | # it under the terms of the GNU General Public License as published by
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| 13 | # the Free Software Foundation; either version 2 of the License, or
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| 14 | # (at your option) any later version.
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| 15 | #
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| 16 | # This program is distributed in the hope that it will be useful,
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| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | # GNU General Public License for more details.
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| 20 | #
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| 21 | # You should have received a copy of the GNU General Public License
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| 22 | # along with this program; if not, write to the Free Software
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| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | #
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| 25 | ###########################################################################
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| 26 |
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| 27 | package EncodingUtil;
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| 28 |
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| 29 | use strict;
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| 30 | no strict 'subs';
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| 31 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 32 |
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| 33 | use encodings;
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| 34 |
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| 35 | use PrintInfo;
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[31478] | 36 | use Encode;
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[31456] | 37 |
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| 38 | BEGIN {
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| 39 | @EncodingUtil::ISA = ( 'PrintInfo' );
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| 40 | }
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| 41 |
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| 42 | our $encoding_list =
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| 43 | [ { 'name' => "ascii",
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| 44 | 'desc' => "{BasePlugin.encoding.ascii}" },
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| 45 | { 'name' => "utf8",
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| 46 | 'desc' => "{BasePlugin.encoding.utf8}" },
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| 47 | { 'name' => "unicode",
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| 48 | 'desc' => "{BasePlugin.encoding.unicode}" } ];
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| 49 |
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| 50 |
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| 51 | my $e = $encodings::encodings;
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| 52 | foreach my $enc (sort {$e->{$a}->{'name'} cmp $e->{$b}->{'name'}} keys (%$e))
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| 53 | {
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| 54 | my $hashEncode =
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| 55 | {'name' => $enc,
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| 56 | 'desc' => $e->{$enc}->{'name'}};
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| 57 |
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| 58 | push(@{$encoding_list},$hashEncode);
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| 59 | }
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| 60 |
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| 61 | our $encoding_plus_auto_list =
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| 62 | [ { 'name' => "auto",
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| 63 | 'desc' => "{BasePlugin.filename_encoding.auto}" },
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| 64 | { 'name' => "auto-language-analysis",
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| 65 | 'desc' => "{BasePlugin.filename_encoding.auto_language_analysis}" }, # textcat
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| 66 | { 'name' => "auto-filesystem-encoding",
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| 67 | 'desc' => "{BasePlugin.filename_encoding.auto_filesystem_encoding}" }, # locale
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| 68 | { 'name' => "auto-fl",
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| 69 | 'desc' => "{BasePlugin.filename_encoding.auto_fl}" }, # locale followed by textcat
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| 70 | { 'name' => "auto-lf",
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| 71 | 'desc' => "{BasePlugin.filename_encoding.auto_lf}" } ]; # texcat followed by locale
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| 72 |
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| 73 | push(@{$encoding_plus_auto_list},@{$encoding_list});
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| 74 |
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| 75 | my $arguments =
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[31478] | 76 | [ { 'name' => "block_exp",
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| 77 | 'desc' => "{BasePlugin.block_exp}",
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| 78 | 'type' => "regexp",
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| 79 | 'deft' => "",
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| 80 | 'reqd' => "no" },
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| 81 | { 'name' => "no_blocking",
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| 82 | 'desc' => "{BasePlugin.no_blocking}",
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| 83 | 'type' => "flag",
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| 84 | 'reqd' => "no"},
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| 85 | { 'name' => "filename_encoding",
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| 86 | 'desc' => "{BasePlugin.filename_encoding}",
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| 87 | 'type' => "enum",
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| 88 | 'deft' => "auto",
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| 89 | 'list' => $encoding_plus_auto_list,
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| 90 | 'reqd' => "no" }
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| 91 | ];
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[31456] | 92 |
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| 93 | my $options = { 'name' => "EncodingUtil",
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| 94 | 'desc' => "{EncodingUtil.desc}",
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| 95 | 'abstract' => "yes",
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| 96 | 'inherits' => "no",
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| 97 | 'args' => $arguments };
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| 98 |
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| 99 |
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| 100 | sub new {
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| 101 |
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| 102 | my ($class) = shift (@_);
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| 103 | my ($pluginlist,$inputargs,$hashArgOptLists,$auxiliary) = @_;
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| 104 | push(@$pluginlist, $class);
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| 105 |
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| 106 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 107 | push(@{$hashArgOptLists->{"OptList"}},$options);
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| 108 |
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| 109 | my $self = new PrintInfo($pluginlist, $inputargs, $hashArgOptLists,$auxiliary);
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| 110 |
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| 111 | return bless $self, $class;
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| 112 |
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| 113 | }
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| 114 |
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| 115 | sub init {
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| 116 | my $self = shift (@_);
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| 117 | my ($verbosity, $outhandle, $failhandle) = @_;
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| 118 |
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| 119 | print STDERR "guess encoding = ".$self->guess_filesystem_encoding()."\n";
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| 120 | print STDERR "get encoding = ".$self->get_filesystem_encoding()."\n";
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| 121 |
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| 122 | # verbosity is passed through from the processor
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| 123 | $self->{'verbosity'} = $verbosity;
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| 124 |
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| 125 | # as are the outhandle and failhandle
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| 126 | $self->{'outhandle'} = $outhandle if defined $outhandle;
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| 127 | $self->{'failhandle'} = $failhandle;
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| 128 |
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| 129 | }
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| 130 |
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[31478] | 131 | # converts raw filesystem filename to perl unicode format
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| 132 | sub raw_filename_to_unicode {
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| 133 | my $self = shift (@_);
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| 134 | my ($file) = @_;
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[31456] | 135 |
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[31478] | 136 | my $unicode_file = "";
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| 137 | ### need it in perl unicode, not raw filesystem
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| 138 | my $filename_encoding = $self->guess_filesystem_encoding();
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| 139 |
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| 140 | # copied this from set_Source_metadata in BasePlugin
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| 141 | if ((defined $filename_encoding) && ($filename_encoding ne "ascii")) {
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| 142 | # Use filename_encoding to map raw filename to a Perl unicode-aware string
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| 143 | $unicode_file = decode($filename_encoding,$file);
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| 144 | }
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| 145 | else {
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| 146 | # otherwise generate %xx encoded version of filename for char > 127
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| 147 | $unicode_file = &unicode::raw_filename_to_url_encoded($file);
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| 148 | }
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| 149 | return $unicode_file;
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| 150 |
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| 151 | }
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[31456] | 152 | # just converts path as is to utf8.
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| 153 | sub filepath_to_utf8 {
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| 154 | my $self = shift (@_);
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| 155 | my ($file, $file_encoding) = @_;
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| 156 | my $filemeta = $file;
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| 157 |
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| 158 | my $filename_encoding = $self->{'filename_encoding'}; # filename encoding setting
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| 159 |
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| 160 | # Whenever filename-encoding is set to any of the auto settings, we
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| 161 | # check if the filename is already in UTF8. If it is, then we're done.
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| 162 | if($filename_encoding =~ m/auto/) {
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| 163 | if(&unicode::check_is_utf8($filemeta))
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| 164 | {
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| 165 | $filename_encoding = "utf8";
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| 166 | return $filemeta;
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | # Auto setting, but filename is not utf8
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| 171 | if ($filename_encoding eq "auto")
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| 172 | {
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| 173 | # try textcat
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| 174 | $filename_encoding = $self->textcat_encoding($filemeta);
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| 175 |
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| 176 | # check the locale next
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| 177 | $filename_encoding = $self->locale_encoding() if $filename_encoding eq "undefined";
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| 178 |
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| 179 |
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| 180 | # now try the encoding of the document, if available
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| 181 | if ($filename_encoding eq "undefined" && defined $file_encoding) {
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| 182 | $filename_encoding = $file_encoding;
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| 183 | }
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| 184 |
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| 185 | }
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| 186 |
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| 187 | elsif ($filename_encoding eq "auto-language-analysis")
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| 188 | {
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| 189 | $filename_encoding = $self->textcat_encoding($filemeta);
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| 190 |
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| 191 | # now try the encoding of the document, if available
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| 192 | if ($filename_encoding eq "undefined" && defined $file_encoding) {
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| 193 | $filename_encoding = $file_encoding;
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| 194 | }
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| 195 | }
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| 196 |
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| 197 | elsif ($filename_encoding eq "auto-filesystem-encoding")
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| 198 | {
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| 199 | # try locale
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| 200 | $filename_encoding = $self->locale_encoding();
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| 201 | }
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| 202 |
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| 203 | elsif ($filename_encoding eq "auto-fl")
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| 204 | {
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| 205 | # filesystem-encoding (locale) then language-analysis (textcat)
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| 206 | $filename_encoding = $self->locale_encoding();
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| 207 |
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| 208 | # try textcat
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| 209 | $filename_encoding = $self->textcat_encoding($filemeta) if $filename_encoding eq "undefined";
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| 210 |
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| 211 | # else assume filename encoding is encoding of file content, if that's available
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| 212 | if ($filename_encoding eq "undefined" && defined $file_encoding) {
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| 213 | $filename_encoding = $file_encoding;
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| 214 | }
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| 215 | }
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| 216 |
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| 217 | elsif ($filename_encoding eq "auto-lf")
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| 218 | {
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| 219 | # language-analysis (textcat) then filesystem-encoding (locale)
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| 220 | $filename_encoding = $self->textcat_encoding($filemeta);
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| 221 |
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| 222 | # guess filename encoding from encoding of file content, if available
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| 223 | if ($filename_encoding eq "undefined" && defined $file_encoding) {
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| 224 | $filename_encoding = $file_encoding;
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| 225 | }
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| 226 |
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| 227 | # try locale
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| 228 | $filename_encoding = $self->locale_encoding() if $filename_encoding eq "undefined";
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| 229 | }
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| 230 |
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| 231 | # if still undefined, use utf8 as fallback
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| 232 | if ($filename_encoding eq "undefined") {
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| 233 | $filename_encoding = "utf8";
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| 234 | }
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| 235 |
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| 236 | #print STDERR "**** UTF8 encoding the filename $filemeta ";
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| 237 |
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| 238 | # if the filename encoding is set to utf8 but it isn't utf8 already--such as when
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| 239 | # 1. the utf8 fallback is used, or 2. if the system locale is used and happens to
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| 240 | # be always utf8 (in which case the filename's encoding is also set as utf8 even
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| 241 | # though the filename need not be if it originates from another system)--in such
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| 242 | # cases attempt to make the filename utf8 to match.
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| 243 | if($filename_encoding eq "utf8" && !&unicode::check_is_utf8($filemeta)) {
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| 244 | &unicode::ensure_utf8(\$filemeta);
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| 245 | }
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| 246 |
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| 247 | # convert non-unicode encodings to utf8
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| 248 | if ($filename_encoding !~ m/(?:ascii|utf8|unicode)/) {
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| 249 | $filemeta = &unicode::unicode2utf8(
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| 250 | &unicode::convert2unicode($filename_encoding, \$filemeta)
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| 251 | );
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| 252 | }
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| 253 |
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| 254 | #print STDERR " from encoding $filename_encoding -> $filemeta\n";
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| 255 | return $filemeta;
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| 256 | }
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| 257 |
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| 258 | # gets the filename with no path, converts to utf8, and then dm safes it.
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| 259 | # filename_encoding set by user
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| 260 | sub filename_to_utf8_metadata
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| 261 | {
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| 262 | my $self = shift (@_);
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| 263 | my ($file, $file_encoding) = @_;
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| 264 |
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| 265 | my $outhandle = $self->{'outhandle'};
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| 266 |
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| 267 | print $outhandle "****!!!!**** BasePlugin::filename_to_utf8_metadata now deprecated\n";
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| 268 | my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(0);
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| 269 | print $outhandle "Calling method: $cfilename:$cline $cpackage->$csubr\n";
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| 270 |
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| 271 | my ($filemeta) = $file =~ /([^\\\/]+)$/; # getting the tail of the filepath (skips all string parts containing slashes upto the end)
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| 272 | $filemeta = $self->filepath_to_utf8($filemeta, $file_encoding);
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| 273 |
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| 274 | return $filemeta;
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| 275 | }
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| 276 |
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| 277 | sub locale_encoding {
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| 278 | my $self = shift(@_);
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| 279 |
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| 280 | if (!defined $self->{'filesystem_encoding'}) {
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| 281 | $self->{'filesystem_encoding'} = $self->get_filesystem_encoding();
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| 282 | }
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| 283 |
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| 284 | #print STDERR "*** filename encoding determined based on locale: " . $self->{'filesystem_encoding'} . "\n";
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| 285 | return $self->{'filesystem_encoding'}; # can be the string "undefined"
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| 286 | }
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| 287 |
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| 288 |
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| 289 | sub textcat_encoding {
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| 290 | my $self = shift(@_);
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| 291 | my ($filemeta) = @_;
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| 292 |
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| 293 | # analyse filenames without extensions and digits (and trimmed of
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| 294 | # surrounding whitespace), so that irrelevant chars don't confuse
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| 295 | # textcat
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| 296 | my $strictfilemeta = $filemeta;
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| 297 | $strictfilemeta =~ s/\.[^\.]+$//g;
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| 298 | $strictfilemeta =~ s/\d//g;
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| 299 | $strictfilemeta =~ s/^\s*//g;
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| 300 | $strictfilemeta =~ s/\s*$//g;
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| 301 |
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| 302 | my $filename_encoding = $self->encoding_from_language_analysis($strictfilemeta);
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| 303 | if(!defined $filename_encoding) {
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| 304 | $filename_encoding = "undefined";
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| 305 | }
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| 306 |
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| 307 | return $filename_encoding; # can be the string "undefined"
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| 308 | }
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| 309 |
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| 310 | # performs textcat
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| 311 | sub encoding_from_language_analysis {
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| 312 | my $self = shift(@_);
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| 313 | my ($text) = @_;
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| 314 |
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| 315 | my $outhandle = $self->{'outhandle'};
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| 316 | my $best_encoding = undef;
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| 317 |
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| 318 | # get the language/encoding of the textstring using textcat
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| 319 | require textcat; # Only load the textcat module if it is required
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| 320 | $self->{'textcat'} = new textcat() unless defined($self->{'textcat'});
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| 321 | my $results = $self->{'textcat'}->classify_cached_filename(\$text);
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| 322 |
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| 323 |
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| 324 | if (scalar @$results < 0) {
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| 325 | return undef;
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| 326 | }
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| 327 |
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| 328 | # We have some results, we choose the first
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| 329 | my ($language, $encoding) = $results->[0] =~ /^([^-]*)(?:-(.*))?$/;
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| 330 |
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| 331 | $best_encoding = $encoding;
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| 332 | if (!defined $best_encoding) {
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| 333 | return undef;
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| 334 | }
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| 335 |
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| 336 | if (defined $best_encoding && $best_encoding =~ m/^iso_8859/ && &unicode::check_is_utf8($text)) {
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| 337 | # the text is valid utf8, so assume that's the real encoding (since textcat is based on probabilities)
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| 338 | $best_encoding = 'utf8';
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| 339 | }
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| 340 |
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| 341 |
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| 342 | # check for equivalents where textcat doesn't have some encodings...
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| 343 | # eg MS versions of standard encodings
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| 344 | if (defined $best_encoding && $best_encoding =~ /^iso_8859_(\d+)/) {
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| 345 | my $iso = $1; # which variant of the iso standard?
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| 346 | # iso-8859 sets don't use chars 0x80-0x9f, windows codepages do
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| 347 | if ($text =~ /[\x80-\x9f]/) {
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| 348 | # Western Europe
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| 349 | if ($iso == 1 or $iso == 15) { $best_encoding = 'windows_1252' }
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| 350 | elsif ($iso == 2) {$best_encoding = 'windows_1250'} # Central Europe
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| 351 | elsif ($iso == 5) {$best_encoding = 'windows_1251'} # Cyrillic
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| 352 | elsif ($iso == 6) {$best_encoding = 'windows_1256'} # Arabic
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| 353 | elsif ($iso == 7) {$best_encoding = 'windows_1253'} # Greek
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| 354 | elsif ($iso == 8) {$best_encoding = 'windows_1255'} # Hebrew
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| 355 | elsif ($iso == 9) {$best_encoding = 'windows_1254'} # Turkish
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| 356 | }
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| 357 | }
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| 358 |
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| 359 | if (defined $best_encoding && $best_encoding !~ /^(ascii|utf8|unicode)$/ &&
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| 360 | !defined $encodings::encodings->{$best_encoding})
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| 361 | {
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| 362 | if ($self->{'verbosity'}) {
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| 363 | gsprintf($outhandle, "BasePlugin: {ReadTextFile.unsupported_encoding}\n", $text, $best_encoding, "undef");
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| 364 | }
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| 365 | $best_encoding = undef;
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| 366 | }
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| 367 |
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| 368 | return $best_encoding;
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| 369 | }
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| 370 |
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| 371 |
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| 372 |
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| 373 | sub deduce_filename_encoding
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| 374 | {
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| 375 | my $self = shift (@_);
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| 376 | my ($file,$metadata,$plugin_filename_encoding) = @_;
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| 377 |
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| 378 | my $gs_filename_encoding = $metadata->{"gs.filenameEncoding"};
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| 379 | my $deduced_filename_encoding = undef;
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| 380 |
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| 381 | # Start by looking for manually assigned metadata
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| 382 | if (defined $gs_filename_encoding) {
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| 383 | if (ref ($gs_filename_encoding) eq "ARRAY") {
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| 384 | my $outhandle = $self->{'outhandle'};
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| 385 |
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| 386 | $deduced_filename_encoding = $gs_filename_encoding->[0];
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| 387 |
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| 388 | my $num_vals = scalar(@$gs_filename_encoding);
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| 389 | if ($num_vals>1) {
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| 390 | print $outhandle "Warning: gs.filenameEncoding multiply defined for $file\n";
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| 391 | print $outhandle " Selecting first value: $deduced_filename_encoding\n";
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| 392 | }
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| 393 | }
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| 394 | else {
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| 395 | $deduced_filename_encoding = $gs_filename_encoding;
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| 396 | }
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| 397 | }
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| 398 |
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| 399 | if (!defined $deduced_filename_encoding || ($deduced_filename_encoding =~ m/^\s*$/)) {
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| 400 | # Look to see if plugin specifies this value
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| 401 |
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| 402 | if (defined $plugin_filename_encoding) {
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| 403 | # First look to see if we're using any of the "older" (i.e. deprecated auto-... plugin options)
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| 404 | if ($plugin_filename_encoding =~ m/^auto-.*$/) {
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| 405 | my $outhandle = $self->{'outhandle'};
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| 406 | print $outhandle "Warning: $plugin_filename_encoding is no longer supported\n";
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| 407 | print $outhandle " default to 'auto'\n";
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| 408 | $self->{'filename_encoding'} = $plugin_filename_encoding = "auto";
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| 409 | }
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| 410 |
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| 411 | if ($plugin_filename_encoding ne "auto") {
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| 412 | # We've been given a specific filenamne encoding
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| 413 | # => so use it!
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| 414 | $deduced_filename_encoding = $plugin_filename_encoding;
|
---|
| 415 | }
|
---|
| 416 | }
|
---|
| 417 | }
|
---|
| 418 |
|
---|
| 419 | if (!defined $deduced_filename_encoding || ($deduced_filename_encoding =~ m/^\s*$/)) {
|
---|
| 420 |
|
---|
| 421 | # Look to file system to provide a character encoding
|
---|
| 422 |
|
---|
| 423 | # If Windows NTFS, then -- assuming we work with long file names got through
|
---|
| 424 | # Win32::GetLongFilePath() -- then the underlying file system is UTF16
|
---|
| 425 |
|
---|
| 426 | if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
|
---|
| 427 | # Can do better than working with the DOS character encoding returned by locale
|
---|
| 428 | $deduced_filename_encoding = "unicode";
|
---|
| 429 | }
|
---|
| 430 | else {
|
---|
| 431 | # Unix of some form or other
|
---|
| 432 |
|
---|
| 433 | # See if we can determine the file system encoding through locale
|
---|
| 434 | $deduced_filename_encoding = $self->locale_encoding();
|
---|
| 435 |
|
---|
| 436 | # if locale shows us filesystem is utf8, check to see filename is consistent
|
---|
| 437 | # => if not, then we have an "alien" filename on our hands
|
---|
| 438 |
|
---|
| 439 | if (defined $deduced_filename_encoding && $deduced_filename_encoding =~ m/^utf-?8$/i) {
|
---|
| 440 | if (!&unicode::check_is_utf8($file)) {
|
---|
| 441 | # "alien" filename, so revert
|
---|
| 442 | $deduced_filename_encoding = undef;
|
---|
| 443 | }
|
---|
| 444 | }
|
---|
| 445 | }
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | # if (!defined $deduced_filename_encoding || ($deduced_filename_encoding =~ m/^\s*$/)) {
|
---|
| 449 | # # Last chance, apply textcat to deduce filename encoding
|
---|
| 450 | # $deduced_filename_encoding = $self->textcat_encoding($file);
|
---|
| 451 | # }
|
---|
| 452 |
|
---|
| 453 | if ($self->{'verbosity'}>3) {
|
---|
| 454 | my $outhandle = $self->{'outhandle'};
|
---|
| 455 |
|
---|
| 456 | if (defined $deduced_filename_encoding) {
|
---|
| 457 | print $outhandle " Deduced filename encoding as: $deduced_filename_encoding\n";
|
---|
| 458 | }
|
---|
| 459 | else {
|
---|
| 460 | print $outhandle " No filename encoding deduced\n";
|
---|
| 461 | }
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | return $deduced_filename_encoding;
|
---|
| 465 | }
|
---|
| 466 |
|
---|
| 467 |
|
---|
| 468 | sub guess_filesystem_encoding
|
---|
| 469 | {
|
---|
| 470 | my $self = shift (@_);
|
---|
| 471 | # Look to file system to provide a character encoding
|
---|
| 472 | my $deduced_filename_encoding = "";
|
---|
| 473 | # If Windows NTFS, then -- assuming we work with long file names got through
|
---|
| 474 | # Win32::GetLongFilePath() -- then the underlying file system is UTF16
|
---|
| 475 |
|
---|
| 476 | if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
|
---|
| 477 | # Can do better than working with the DOS character encoding returned by locale
|
---|
| 478 | $deduced_filename_encoding = "unicode";
|
---|
| 479 | }
|
---|
| 480 | else {
|
---|
| 481 | # Unix of some form or other
|
---|
| 482 |
|
---|
| 483 | # See if we can determine the file system encoding through locale
|
---|
| 484 | $deduced_filename_encoding = $self->locale_encoding(); #utf8??
|
---|
| 485 |
|
---|
| 486 | }
|
---|
| 487 | print STDERR "guessing filesystem encoding is $deduced_filename_encoding\n";
|
---|
| 488 | return $deduced_filename_encoding;
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 |
|
---|
| 492 | # uses locale
|
---|
| 493 | sub get_filesystem_encoding
|
---|
| 494 | {
|
---|
| 495 |
|
---|
| 496 | my $self = shift(@_);
|
---|
| 497 |
|
---|
| 498 | my $outhandle = $self->{'outhandle'};
|
---|
| 499 | my $filesystem_encoding = undef;
|
---|
| 500 |
|
---|
| 501 | eval {
|
---|
| 502 | # Works for Windows as well, returning the DOS code page in use
|
---|
| 503 | use POSIX qw(locale_h);
|
---|
| 504 |
|
---|
| 505 | # With only one parameter, setlocale retrieves the
|
---|
| 506 | # current value
|
---|
| 507 | my $current_locale = setlocale(LC_CTYPE);
|
---|
| 508 |
|
---|
| 509 | my $char_encoding = undef;
|
---|
| 510 | if ($current_locale =~ m/\./) {
|
---|
| 511 | ($char_encoding) = ($current_locale =~ m/^.*\.(.*?)$/);
|
---|
| 512 | $char_encoding = lc($char_encoding);
|
---|
| 513 | }
|
---|
| 514 | else {
|
---|
| 515 | if ($current_locale =~ m/^(posix|c)$/i) {
|
---|
| 516 | $char_encoding = "ascii";
|
---|
| 517 | }
|
---|
| 518 | }
|
---|
| 519 |
|
---|
| 520 | if (defined $char_encoding) {
|
---|
| 521 | if ($char_encoding =~ m/^(iso)(8859)-?(\d{1,2})$/) {
|
---|
| 522 | $char_encoding = "$1\_$2\_$3";
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | $char_encoding =~ s/-/_/g;
|
---|
| 526 | $char_encoding =~ s/^utf_8$/utf8/;
|
---|
| 527 |
|
---|
| 528 | if ($char_encoding =~ m/^\d+$/) {
|
---|
| 529 | if (defined $encodings::encodings->{"windows_$char_encoding"}) {
|
---|
| 530 | $char_encoding = "windows_$char_encoding";
|
---|
| 531 | }
|
---|
| 532 | elsif (defined $encodings::encodings->{"dos_$char_encoding"}) {
|
---|
| 533 | $char_encoding = "dos_$char_encoding";
|
---|
| 534 | }
|
---|
| 535 | }
|
---|
| 536 |
|
---|
| 537 | if (($char_encoding =~ m/(?:ascii|utf8|unicode)/)
|
---|
| 538 | || (defined $encodings::encodings->{$char_encoding})) {
|
---|
| 539 | $filesystem_encoding = $char_encoding;
|
---|
| 540 | }
|
---|
| 541 | else {
|
---|
| 542 | print $outhandle "Warning: Unsupported character encoding '$char_encoding' from locale '$current_locale'\n";
|
---|
| 543 | }
|
---|
| 544 | }
|
---|
| 545 |
|
---|
| 546 |
|
---|
| 547 | };
|
---|
| 548 | if ($@) {
|
---|
| 549 | print $outhandle "$@\n";
|
---|
| 550 | print $outhandle "Warning: Unable to establish locale. Will assume filesystem is UTF-8\n";
|
---|
| 551 |
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | return $filesystem_encoding;
|
---|
| 555 | }
|
---|
| 556 |
|
---|
| 557 |
|
---|
| 558 |
|
---|
| 559 | # write_file -- used by ConvertToPlug, for example in post processing
|
---|
| 560 | #
|
---|
| 561 | # where should this go, is here the best place??
|
---|
| 562 | sub utf8_write_file {
|
---|
| 563 | my $self = shift (@_);
|
---|
| 564 | my ($textref, $filename) = @_;
|
---|
| 565 |
|
---|
| 566 | if (!open (FILE, ">:utf8", $filename)) {
|
---|
| 567 | gsprintf(STDERR, "ConvertToPlug::write_file {ConvertToPlug.could_not_open_for_writing} ($!)\n", $filename);
|
---|
| 568 | die "\n";
|
---|
| 569 | }
|
---|
| 570 | print FILE $$textref;
|
---|
| 571 |
|
---|
| 572 | close FILE;
|
---|
| 573 | }
|
---|
| 574 |
|
---|
[31478] | 575 | sub block_raw_filename {
|
---|
| 576 |
|
---|
| 577 | my $self = shift (@_);
|
---|
| 578 | my ($block_hash,$filename_full_path) = @_;
|
---|
| 579 |
|
---|
| 580 | my $unicode_filename = $self->raw_filename_to_unicode($filename_full_path);
|
---|
| 581 | return $self->block_filename($block_hash, $unicode_filename);
|
---|
| 582 | }
|
---|
| 583 |
|
---|
| 584 | # block unicode string filename
|
---|
| 585 | sub block_filename
|
---|
| 586 | {
|
---|
| 587 | my $self = shift (@_);
|
---|
| 588 | my ($block_hash,$filename_full_path) = @_;
|
---|
| 589 | print STDERR "in block filename $filename_full_path\n";
|
---|
| 590 | print STDERR &unicode::debug_unicode_string($filename_full_path)."\n";
|
---|
| 591 |
|
---|
| 592 | if (($ENV{'GSDLOS'} =~ m/^windows$/) && ($^O ne "cygwin")) {
|
---|
| 593 | # block hash contains long names, lets make sure that we were passed a long name
|
---|
| 594 | $filename_full_path = &util::upgrade_if_dos_filename($filename_full_path);
|
---|
| 595 | # lower case the entire thing, eg for cover.jpg when its actually cover.JPG
|
---|
| 596 | my $lower_filename_full_path = lc($filename_full_path);
|
---|
| 597 | $block_hash->{'file_blocks'}->{$lower_filename_full_path} = 1;
|
---|
| 598 |
|
---|
| 599 | }
|
---|
| 600 | elsif ($ENV{'GSDLOS'} =~ m/^darwin$/) {
|
---|
| 601 | # we need to normalize the filenames
|
---|
| 602 | my $composed_filename_full_path = normalize('C', $filename_full_path);
|
---|
| 603 | print STDERR "darwin, composed filename =". &unicode::debug_unicode_string($composed_filename_full_path)."\n";
|
---|
| 604 | $block_hash->{'file_blocks'}->{$composed_filename_full_path} = 1;
|
---|
| 605 | }
|
---|
| 606 |
|
---|
| 607 | else {
|
---|
| 608 | $block_hash->{'file_blocks'}->{$filename_full_path} = 1;
|
---|
| 609 | }
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 |
|
---|
| 613 | # filename is raw filesystem name
|
---|
| 614 | sub raw_file_is_blocked {
|
---|
| 615 | my $self = shift (@_);
|
---|
| 616 | my ($block_hash, $filename_full_path) = @_;
|
---|
| 617 |
|
---|
| 618 | my $unicode_filename_full_path = $self->raw_filename_to_unicode($filename_full_path);
|
---|
| 619 | return $self->file_is_blocked($block_hash, $unicode_filename_full_path);
|
---|
| 620 | }
|
---|
| 621 |
|
---|
| 622 | # filename must be perl unicode string
|
---|
| 623 | sub file_is_blocked {
|
---|
| 624 | my $self = shift (@_);
|
---|
| 625 | my ($block_hash, $filename_full_path) = @_;
|
---|
| 626 |
|
---|
| 627 | #
|
---|
| 628 | print STDERR "in file is blocked $filename_full_path\n";
|
---|
| 629 | print STDERR &unicode::debug_unicode_string($filename_full_path)."\n";
|
---|
| 630 | if (($ENV{'GSDLOS'} =~ m/^windows$/) && ($^O ne "cygwin")) {
|
---|
| 631 | # convert to long filenames if needed
|
---|
| 632 | $filename_full_path = &util::upgrade_if_dos_filename($filename_full_path);
|
---|
| 633 | # all block paths are lowercased.
|
---|
| 634 | my $lower_filename = lc ($filename_full_path);
|
---|
| 635 | if (defined $block_hash->{'file_blocks'}->{$lower_filename}) {
|
---|
| 636 | $self->{'num_blocked'} ++;
|
---|
| 637 | return 1;
|
---|
| 638 | }
|
---|
| 639 | }
|
---|
| 640 | else {
|
---|
| 641 | if (defined $block_hash->{'file_blocks'}->{$filename_full_path}) {
|
---|
| 642 | $self->{'num_blocked'} ++;
|
---|
| 643 | print STDERR "BLOCKED\n";
|
---|
| 644 | return 1;
|
---|
| 645 | }
|
---|
| 646 | }
|
---|
| 647 | # check Directory plugin's own block_exp
|
---|
| 648 | if ($self->{'block_exp'} ne "" && $filename_full_path =~ /$self->{'block_exp'}/) {
|
---|
| 649 | $self->{'num_blocked'} ++;
|
---|
| 650 | return 1; # blocked
|
---|
| 651 | }
|
---|
| 652 | print STDERR "NOT BLOCKED\n";
|
---|
| 653 | return 0;
|
---|
| 654 | }
|
---|
| 655 |
|
---|
| 656 |
|
---|
[31456] | 657 | 1;
|
---|
| 658 |
|
---|