1 | ###########################################################################
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2 | #
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3 | # PrintInfo - most base plugin
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4 | #
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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) 2008 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 | ## Most basic plugin, just handles parsing the arguments and printing out descriptions. Used for plugins and Extractor plugins
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28 |
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29 | package PrintInfo;
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30 |
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31 | BEGIN {
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32 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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33 | }
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34 |
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35 | eval {require bytes};
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36 | eval "require diagnostics"; # some perl distros (eg mac) don't have this
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37 |
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38 | # suppress the annoying "subroutine redefined" warning that various
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39 | # plugins cause under perl 5.6
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40 | $SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
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41 |
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42 | use strict;
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43 | no strict 'subs';
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44 |
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45 | use gsprintf 'gsprintf';
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46 | use parse2;
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47 | use printusage;
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48 |
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49 | my $arguments = [];
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50 |
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51 | my $options = { 'name' => "PrintInfo",
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52 | 'desc' => "{PrintInfo.desc}",
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53 | 'abstract' => "yes",
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54 | 'inherits' => "no",
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55 | 'args' => $arguments };
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56 |
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57 | # $auxiliary_plugin argument passed in by "on-the-side" plugin helpers such as Extractors and ImageConverter. We don't want parsing of args done by them.
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58 | sub new
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59 | {
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60 | my $class = shift (@_);
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61 | my ($pluginlist,$args,$hashArgOptLists, $auxiliary) = @_;
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62 | my $plugin_name = (defined $pluginlist->[0]) ? $pluginlist->[0] : $class;
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63 |
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64 | if ($plugin_name eq $class) {
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65 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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66 | push(@{$hashArgOptLists->{"OptList"}},$options);
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67 | }
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68 | my $self = {};
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69 | $self->{'outhandle'} = STDERR;
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70 | $self->{'option_list'} = $hashArgOptLists->{"OptList"};
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71 | $self->{"info_only"} = 0;
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72 |
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73 | # Check if gsdlinfo is in the argument list or not - if it is, don't parse
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74 | # the args, just return the object.
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75 | foreach my $strArg (@{$args})
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76 | {
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77 | if($strArg eq "-gsdlinfo")
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78 | {
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79 | $self->{"info_only"} = 1;
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80 | return bless $self, $class;
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81 | }
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82 | }
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83 |
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84 | if (defined $auxiliary) { # don't parse the args here
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85 | return bless $self, $class;
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86 | }
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87 |
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88 | if(parse2::parse($args,$hashArgOptLists->{"ArgList"},$self) == -1)
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89 | {
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90 | my $classTempClass = bless $self, $class;
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91 | print STDERR "<BadPlugin p=$plugin_name>\n";
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92 | &gsprintf(STDERR, "\n{PrintInfo.bad_general_option}\n", $plugin_name);
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93 | $classTempClass->print_txt_usage(""); # Use default resource bundle
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94 | die "\n";
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95 | }
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96 |
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97 | delete $self->{"info_only"};
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98 | # else parsing was successful.
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99 |
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100 | $self->{'plugin_type'} = $plugin_name;
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101 |
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102 | return bless $self, $class;
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103 |
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104 | }
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105 |
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106 | #sub init {
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107 | #}
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108 |
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109 | sub get_arguments
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110 | {
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111 | my $self = shift(@_);
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112 | my $optionlistref = $self->{'option_list'};
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113 | my @optionlist = @$optionlistref;
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114 | my $pluginoptions = pop(@$optionlistref);
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115 | my $pluginarguments = $pluginoptions->{'args'};
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116 | return $pluginarguments;
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117 | }
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118 |
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119 |
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120 | sub print_xml_usage
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121 | {
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122 | my $self = shift(@_);
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123 | my $header = shift(@_);
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124 | my $high_level_information_only = shift(@_);
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125 |
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126 | # XML output is always in UTF-8
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127 | gsprintf::output_strings_in_UTF8;
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128 |
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129 | if ($header) {
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130 | &PrintUsage::print_xml_header("plugin");
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131 | }
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132 | $self->print_xml($high_level_information_only);
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133 | }
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134 |
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135 |
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136 | sub print_xml
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137 | {
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138 | my $self = shift(@_);
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139 | my $high_level_information_only = shift(@_);
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140 |
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141 | my $optionlistref = $self->{'option_list'};
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142 | my @optionlist = @$optionlistref;
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143 | my $pluginoptions = shift(@$optionlistref);
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144 | return if (!defined($pluginoptions));
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145 |
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146 | # Find the process and block default expressions in the plugin arguments
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147 | my $process_exp = "";
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148 | my $block_exp = "";
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149 | if (defined($pluginoptions->{'args'})) {
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150 | foreach my $option (@{$pluginoptions->{'args'}}) {
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151 | if ($option->{'name'} eq "process_exp") {
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152 | $process_exp = $option->{'deft'};
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153 | }
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154 | if ($option->{'name'} eq "block_exp") {
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155 | $block_exp = $option->{'deft'};
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156 | }
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157 | }
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158 | }
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159 |
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160 | gsprintf(STDERR, "<PlugInfo>\n");
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161 | gsprintf(STDERR, " <Name>$pluginoptions->{'name'}</Name>\n");
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162 | my $desc = gsprintf::lookup_string($pluginoptions->{'desc'});
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163 | $desc =~ s/</&lt;/g; # doubly escaped
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164 | $desc =~ s/>/&gt;/g;
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165 | gsprintf(STDERR, " <Desc>$desc</Desc>\n");
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166 | gsprintf(STDERR, " <Abstract>$pluginoptions->{'abstract'}</Abstract>\n");
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167 | gsprintf(STDERR, " <Inherits>$pluginoptions->{'inherits'}</Inherits>\n");
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168 | gsprintf(STDERR, " <Processes>$process_exp</Processes>\n");
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169 | gsprintf(STDERR, " <Blocks>$block_exp</Blocks>\n");
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170 | gsprintf(STDERR, " <Explodes>" . ($pluginoptions->{'explodes'} || "no") . "</Explodes>\n");
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171 | # adding new option that works with replace_srcdoc_with_html.pl
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172 | gsprintf(STDERR, " <SourceReplaceable>" . ($pluginoptions->{'srcreplaceable'} || "no") . "</SourceReplaceable>\n");
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173 | unless (defined($high_level_information_only)) {
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174 | gsprintf(STDERR, " <Arguments>\n");
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175 | if (defined($pluginoptions->{'args'})) {
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176 | &PrintUsage::print_options_xml($pluginoptions->{'args'});
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177 | }
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178 | gsprintf(STDERR, " </Arguments>\n");
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179 |
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180 | # Recurse up the plugin hierarchy
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181 | $self->print_xml();
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182 | }
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183 | gsprintf(STDERR, "</PlugInfo>\n");
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184 | }
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185 |
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186 |
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187 | sub print_txt_usage
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188 | {
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189 | my $self = shift(@_);
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190 | # Print the usage message for a plugin (recursively)
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191 | my $descoffset = $self->determine_description_offset(0);
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192 | $self->print_plugin_usage($descoffset, 1);
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193 | }
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194 |
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195 |
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196 | sub determine_description_offset
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197 | {
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198 | my $self = shift(@_);
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199 | my $maxoffset = shift(@_);
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200 |
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201 | my $optionlistref = $self->{'option_list'};
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202 | my @optionlist = @$optionlistref;
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203 | my $pluginoptions = shift(@$optionlistref);
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204 | return $maxoffset if (!defined($pluginoptions));
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205 |
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206 | # Find the length of the longest option string of this plugin
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207 | my $pluginargs = $pluginoptions->{'args'};
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208 | if (defined($pluginargs)) {
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209 | my $longest = &PrintUsage::find_longest_option_string($pluginargs);
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210 | if ($longest > $maxoffset) {
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211 | $maxoffset = $longest;
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212 | }
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213 | }
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214 |
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215 | # Recurse up the plugin hierarchy
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216 | $maxoffset = $self->determine_description_offset($maxoffset);
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217 | $self->{'option_list'} = \@optionlist;
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218 | return $maxoffset;
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219 | }
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220 |
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221 |
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222 | sub print_plugin_usage
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223 | {
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224 | my $self = shift(@_);
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225 | my $descoffset = shift(@_);
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226 | my $isleafclass = shift(@_);
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227 |
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228 | my $optionlistref = $self->{'option_list'};
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229 | my @optionlist = @$optionlistref;
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230 | my $pluginoptions = shift(@$optionlistref);
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231 | return if (!defined($pluginoptions));
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232 |
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233 | my $pluginname = $pluginoptions->{'name'};
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234 | my $pluginargs = $pluginoptions->{'args'};
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235 | my $plugindesc = $pluginoptions->{'desc'};
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236 |
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237 | # Produce the usage information using the data structure above
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238 | if ($isleafclass) {
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239 | if (defined($plugindesc)) {
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240 | gsprintf(STDERR, "$plugindesc\n\n");
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241 | }
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242 | gsprintf(STDERR, " {common.usage}: plugin $pluginname [{common.options}]\n\n");
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243 | }
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244 |
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245 | # Display the plugin options, if there are some
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246 | if (defined($pluginargs)) {
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247 | # Calculate the column offset of the option descriptions
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248 | my $optiondescoffset = $descoffset + 2; # 2 spaces between options & descriptions
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249 |
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250 | if ($isleafclass) {
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251 | gsprintf(STDERR, " {common.specific_options}:\n");
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252 | }
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253 | else {
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254 | gsprintf(STDERR, " {common.general_options}:\n", $pluginname);
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255 | }
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256 |
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257 | # Display the plugin options
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258 | &PrintUsage::print_options_txt($pluginargs, $optiondescoffset);
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259 | }
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260 |
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261 | # Recurse up the plugin hierarchy
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262 | $self->print_plugin_usage($descoffset, 0);
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263 | $self->{'option_list'} = \@optionlist;
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264 | }
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265 |
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266 |
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267 | 1;
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268 |
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269 |
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