[22858] | 1 | package AutoLoadConverters;
|
---|
| 2 |
|
---|
| 3 | use strict;
|
---|
| 4 | no strict 'refs';
|
---|
| 5 | no strict 'subs';
|
---|
| 6 |
|
---|
| 7 | use PrintInfo;
|
---|
[32341] | 8 | use util;
|
---|
[22858] | 9 |
|
---|
| 10 | use gsprintf 'gsprintf';
|
---|
| 11 |
|
---|
| 12 | sub BEGIN {
|
---|
| 13 | @AutoLoadConverters::ISA = ('PrintInfo');
|
---|
| 14 | }
|
---|
| 15 |
|
---|
| 16 | # the dynamic conversion args will get added here
|
---|
| 17 | my $arguments = [];
|
---|
| 18 |
|
---|
| 19 | my $options = { 'name' => "AutoLoadConverters",
|
---|
| 20 | 'desc' => "{AutoLoadConverters.desc}",
|
---|
| 21 | 'abstract' => "yes",
|
---|
| 22 | 'inherits' => "yes",
|
---|
| 23 | 'args' => $arguments };
|
---|
| 24 |
|
---|
| 25 | sub dynamically_load_converter
|
---|
| 26 | {
|
---|
| 27 | my ($autoPackage, $calling_class) = @_;
|
---|
| 28 |
|
---|
| 29 | my $settings = {};
|
---|
| 30 |
|
---|
| 31 | my ($autoName) = ($autoPackage =~ m/(^.*)Converter$/);
|
---|
| 32 | my $autoVar = lc($autoName);
|
---|
| 33 | $settings->{'converter_name'} = $autoName;
|
---|
| 34 | $settings->{'converter_var'} = $autoVar;
|
---|
| 35 |
|
---|
| 36 | eval("require $autoPackage");
|
---|
| 37 | if ($@) {
|
---|
| 38 | # Useful debugging statement if there is a syntax error in the plugin
|
---|
| 39 | #print STDERR "$@\n";
|
---|
| 40 | $settings->{'converter_installed'} = 0;
|
---|
| 41 | $settings->{'conversion_available'} = 0;
|
---|
| 42 | }
|
---|
| 43 | else {
|
---|
| 44 | # found the converter
|
---|
| 45 | $settings->{'conversion_installed'} = 1;
|
---|
[32341] | 46 | # print STDERR "AutoLoadConverters: $autoName Extension to Greenstone detected for $calling_class\n";
|
---|
[22858] | 47 | # but can it run???
|
---|
| 48 | if (eval "\$${autoPackage}::${autoVar}_conversion_available") {
|
---|
| 49 | $settings->{'conversion_available'} = 1;
|
---|
| 50 | push(@AutoLoadConverters::ISA, $autoPackage);
|
---|
| 51 |
|
---|
| 52 | } else {
|
---|
| 53 | $settings->{'conversion_available'} = 0;
|
---|
| 54 | print STDERR "... but it appears to be broken\n";
|
---|
| 55 | &gsprintf(STDERR, "AutoLoadConverters: {AutoloadConverter.noconversionavailable}");
|
---|
[24728] | 56 | my $dictentry_reason = eval "\$${autoPackage}::no_${autoVar}_conversion_reason";
|
---|
[22858] | 57 |
|
---|
[24728] | 58 | &gsprintf(STDERR, " ({$autoPackage\.$dictentry_reason})\n");
|
---|
[22858] | 59 |
|
---|
| 60 | }
|
---|
| 61 | }
|
---|
| 62 |
|
---|
| 63 | if ($settings->{'conversion_available'}) {
|
---|
| 64 |
|
---|
| 65 | my $opt_conversion_args =
|
---|
| 66 | [ { 'name' => "$autoVar\_conversion",
|
---|
| 67 | 'desc' => "{$autoPackage.$autoVar\_conversion}",
|
---|
| 68 | 'type' => "flag",
|
---|
| 69 | 'reqd' => "no" } ];
|
---|
| 70 |
|
---|
| 71 | $settings->{'converter_arguments'} = $opt_conversion_args;
|
---|
| 72 |
|
---|
| 73 | }
|
---|
| 74 | return $settings;
|
---|
| 75 |
|
---|
| 76 |
|
---|
| 77 | }
|
---|
| 78 |
|
---|
| 79 | ####
|
---|
| 80 | # This plugin takes an extra initial parameter in its constructor (compared
|
---|
| 81 | # with the norm). The extra parameter is an array of converters
|
---|
| 82 | # it should try to dynamically load
|
---|
| 83 | #####
|
---|
| 84 |
|
---|
| 85 | sub new {
|
---|
| 86 |
|
---|
| 87 | # Start the AutoExtractMetadata Constructor
|
---|
| 88 | my $class = shift (@_);
|
---|
| 89 | my ($pluginlist,$inputargs,$hashArgOptLists,$autoPackages, $auxiliary) = @_;
|
---|
| 90 |
|
---|
| 91 | push(@$pluginlist, $class);
|
---|
| 92 | my $classPluginName = $pluginlist->[0];
|
---|
| 93 |
|
---|
| 94 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
---|
| 95 |
|
---|
| 96 | # this static list is just for pluginfo on AutoLoadConverters - we will try to explicitly load all packages
|
---|
| 97 | $autoPackages = ["OpenOfficeConverter", "PDFBoxConverter"] unless defined $autoPackages;
|
---|
| 98 |
|
---|
| 99 | my @self_array = ();
|
---|
| 100 | my $temporary_self = {};
|
---|
| 101 | $temporary_self->{'converter_list'} = [];
|
---|
| 102 | push (@self_array, $temporary_self);
|
---|
| 103 | foreach my $packageName (@$autoPackages) {
|
---|
| 104 | my $package_settings = &dynamically_load_converter($packageName, $classPluginName);
|
---|
| 105 | my $available_var = $package_settings->{'converter_var'}."_available";
|
---|
| 106 | if ($package_settings->{'conversion_available'}) {
|
---|
| 107 | push(@$arguments, @{$package_settings->{'converter_arguments'}});
|
---|
| 108 | my $package_self = eval "new $packageName(\$pluginlist, \$inputargs, \$hashArgOptLists,1);";
|
---|
| 109 | push (@self_array, $package_self);
|
---|
| 110 | $temporary_self->{$available_var} = 1;
|
---|
| 111 | push(@{$temporary_self->{'converter_list'}}, $packageName);
|
---|
| 112 | } else {
|
---|
| 113 | $temporary_self->{$available_var} = 0;
|
---|
| 114 | }
|
---|
| 115 | }
|
---|
| 116 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
---|
| 117 | my $self;
|
---|
| 118 | my $pi_self = new PrintInfo($pluginlist, $inputargs, $hashArgOptLists, 1);
|
---|
| 119 | push (@self_array, $pi_self);
|
---|
[31492] | 120 | $self = BaseImporter::merge_inheritance(@self_array);
|
---|
[22858] | 121 |
|
---|
| 122 | return bless $self, $class;
|
---|
| 123 | }
|
---|
| 124 |
|
---|
| 125 | sub init {
|
---|
| 126 | my $self = shift (@_);
|
---|
| 127 |
|
---|
| 128 | foreach my $converter (@{$self->{'converter_list'}}) {
|
---|
[23752] | 129 | eval "\$self->${converter}::init(\@_);";
|
---|
[22858] | 130 | }
|
---|
| 131 |
|
---|
| 132 | }
|
---|
| 133 |
|
---|
| 134 | sub begin {
|
---|
| 135 | my $self = shift (@_);
|
---|
| 136 |
|
---|
| 137 | foreach my $converter(@{$self->{'converter_list'}}) {
|
---|
[23752] | 138 | eval "\$self->${converter}::begin(\@_);";
|
---|
[22858] | 139 | }
|
---|
| 140 | }
|
---|
| 141 |
|
---|
| 142 | sub deinit {
|
---|
| 143 | my $self = shift (@_);
|
---|
| 144 |
|
---|
| 145 | foreach my $converter (@{$self->{'converter_list'}}) {
|
---|
[23752] | 146 | eval "\$self->${converter}::deinit(\@_);";
|
---|
[22858] | 147 | }
|
---|
| 148 |
|
---|
| 149 | }
|
---|
| 150 |
|
---|
| 151 | sub tmp_area_convert_file {
|
---|
| 152 | my $self = shift (@_);
|
---|
| 153 | my ($output_ext, $input_filename, $textref) = @_;
|
---|
| 154 |
|
---|
| 155 | foreach my $converter(@{$self->{'converter_list'}}) {
|
---|
| 156 | my ($var) = ($converter =~ m/(^.*)Converter$/);
|
---|
| 157 | $var = lc($var);
|
---|
| 158 | if ($self->{"${var}_conversion"}) {
|
---|
| 159 | my ($result, $result_str, $new_filename)
|
---|
| 160 | = eval "\$self->${converter}::convert(\$input_filename, \$output_ext);";
|
---|
[32186] | 161 | if (defined $result && $result != 0) {
|
---|
[22858] | 162 | return $new_filename;
|
---|
| 163 | }
|
---|
| 164 | my $outhandle=$self->{'outhandle'};
|
---|
| 165 | print $outhandle "$converter Conversion error\n";
|
---|
[32186] | 166 | print $outhandle "$@\n";
|
---|
| 167 | if (defined $result_str) {
|
---|
| 168 | print $outhandle "$result_str\n";
|
---|
| 169 | }
|
---|
[22858] | 170 | return "";
|
---|
| 171 | }
|
---|
| 172 | }
|
---|
| 173 |
|
---|
| 174 | # if got here, no converter was specified in plugin args
|
---|
| 175 | return $self->ConvertBinaryFile::tmp_area_convert_file(@_);
|
---|
| 176 |
|
---|
| 177 | }
|
---|