1 | #!/usr/bin/perl -w
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2 |
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3 | ###########################################################################
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4 | #
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5 | # pluginfo.pl --
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6 | # A component of the Greenstone digital library software
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7 | # from the New Zealand Digital Library Project at the
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8 | # University of Waikato, New Zealand.
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9 | #
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10 | # Copyright (C) 1999 New Zealand Digital Library Project
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11 | #
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12 | # This program is free software; you can redistribute it and/or modify
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13 | # it under the terms of the GNU General Public License as published by
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14 | # the Free Software Foundation; either version 2 of the License, or
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15 | # (at your option) any later version.
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16 | #
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17 | # This program is distributed in the hope that it will be useful,
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18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | # GNU General Public License for more details.
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21 | #
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22 | # You should have received a copy of the GNU General Public License
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23 | # along with this program; if not, write to the Free Software
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24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | #
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26 | ###########################################################################
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27 |
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28 | # This program will print info about a plugin
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29 |
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30 | use strict;
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31 | no strict 'subs'; # allow barewords (eg STDERR) as function arguments
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32 |
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33 | BEGIN {
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34 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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35 | die "GSDLOS not set\n" unless defined $ENV{'GSDLOS'};
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36 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
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37 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib/cpan");
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38 | # unshift (@INC, "$ENV{'GSDLHOME'}/perllib/cpan/perl-5.8");
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39 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib/plugins");
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40 |
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41 | if (defined $ENV{'GSDLEXTS'}) {
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42 | my @extensions = split(/:/,$ENV{'GSDLEXTS'});
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43 | foreach my $e (@extensions) {
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44 | my $ext_prefix = "$ENV{'GSDLHOME'}/ext/$e";
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45 |
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46 | unshift (@INC, "$ext_prefix/perllib");
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47 | unshift (@INC, "$ext_prefix/perllib/cpan");
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48 | unshift (@INC, "$ext_prefix/perllib/plugins");
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49 | }
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50 | }
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51 | if (defined $ENV{'GSDL3EXTS'}) {
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52 | my @extensions = split(/:/,$ENV{'GSDL3EXTS'});
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53 | foreach my $e (@extensions) {
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54 | my $ext_prefix = "$ENV{'GSDL3SRCHOME'}/ext/$e";
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55 |
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56 | unshift (@INC, "$ext_prefix/perllib");
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57 | unshift (@INC, "$ext_prefix/perllib/cpan");
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58 | unshift (@INC, "$ext_prefix/perllib/plugins");
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59 | }
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60 | }
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61 |
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62 | }
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63 |
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64 | use plugin;
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65 | use util;
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66 | use gsprintf;
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67 | use printusage;
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68 | use parse2;
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69 |
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70 | my $arguments =
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71 | [ { 'name' => "site",
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72 | 'desc' => "{pluginfo.site}",
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73 | 'type' => "string",
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74 | 'reqd' => "no" },
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75 | { 'name' => "collection",
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76 | 'desc' => "{pluginfo.collection}",
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77 | 'type' => "string",
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78 | 'reqd' => "no" },
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79 | { 'name' => "gs_version",
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80 | 'desc' => "{pluginfo.gs_version}",
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81 | 'type' => "string",
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82 | 'reqd' => "no",
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83 | 'hiddengli' => "yes" },
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84 | { 'name' => "xml",
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85 | 'desc' => "{scripts.xml}",
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86 | 'type' => "flag",
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87 | 'reqd' => "no" },
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88 | { 'name' => "listall",
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89 | 'desc' => "{scripts.listall}",
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90 | 'type' => "flag",
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91 | 'reqd' => "no" },
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92 | { 'name' => "describeall",
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93 | 'desc' => "{scripts.describeall}",
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94 | 'type' => "flag",
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95 | 'reqd' => "no" },
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96 | { 'name' => "language",
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97 | 'desc' => "{scripts.language}",
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98 | 'type' => "string",
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99 | 'reqd' => "no" } ];
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100 |
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101 | my $options = { 'name' => "pluginfo.pl",
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102 | 'desc' => "{pluginfo.desc}",
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103 | 'args' => $arguments };
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104 |
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105 | sub gsprintf
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106 | {
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107 | return &gsprintf::gsprintf(@_);
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108 | }
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109 |
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110 |
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111 | sub main {
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112 | my $site = "";
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113 | my $collection = "";
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114 | my $gs_version = "";
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115 | my $xml = 0;
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116 | my $listall = 0;
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117 | my $describeall = 0;
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118 | my ($language, $encoding);
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119 |
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120 | my $hashParsingResult = {};
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121 | # general options available to all plugins
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122 | my $unparsed_args = parse2::parse(\@ARGV,$arguments,$hashParsingResult,"allow_extra_options");
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123 | # parse returns -1 if an error occurred
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124 | if ($unparsed_args == -1) {
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125 |
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126 | PrintUsage::print_txt_usage($options, "{pluginfo.params}");
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127 | die "\n";
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128 | }
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129 | foreach my $strVariable (keys %$hashParsingResult)
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130 | {
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131 | my $value = $hashParsingResult->{$strVariable};
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132 | # test to make sure the variable name is 'safe'
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133 | if ($strVariable !~ /^\w+$/) {
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134 | die "variable name '$strVariable' isn't safe!";
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135 | }
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136 | eval "\$$strVariable = \$value";
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137 | }
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138 |
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139 | if ($xml) {
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140 | &gsprintf::set_print_freetext_for_xml();
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141 | }
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142 |
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143 | # if language wasn't specified, see if it is set in the environment
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144 | # (LC_ALL or LANG)
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145 | if (!$language && ($_=$ENV{'LC_ALL'} or $_=$ENV{'LANG'})) {
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146 | m/^([^\.]+)\.?(.*)/;
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147 | $language=$1;
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148 | $encoding=$2; # might be undef...
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149 | # gsprintf::load_language* thinks "fr" is completely different to "fr_FR"...
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150 | $language =~ s/_.*$//;
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151 | }
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152 |
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153 | # If $language has been set, load the appropriate resource bundle
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154 | # (Otherwise, the default resource bundle will be loaded automatically)
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155 | if ($language) {
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156 | gsprintf::load_language_specific_resource_bundle($language);
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157 | if ($encoding) {
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158 | $encoding =~ tr/-/_/;
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159 | $encoding = lc($encoding);
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160 | $encoding =~ s/utf_8/utf8/; # special
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161 | $gsprintf::specialoutputencoding=$encoding;
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162 | }
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163 | }
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164 |
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165 | # If there is not exactly 1 argument left (plugin name), then the arguments were wrong
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166 | # If the user specified -h, then we output the usage also
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167 | if((@ARGV && $ARGV[0] =~ /^\-+h/) )
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168 | {
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169 | PrintUsage::print_txt_usage($options, "{pluginfo.params}");
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170 | die "\n";
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171 | }
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172 |
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173 | # If there is not exactly 1 argument left (plugin name), then the arguments were wrong (apart from if we had listall or describeall set)
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174 | if ($listall == 0 && $describeall ==0 && $unparsed_args == 0) {
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175 | gsprintf(STDERR, "{pluginfo.no_plugin_name}\n\n");
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176 | PrintUsage::print_txt_usage($options, "{pluginfo.params}", 1);
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177 | die "\n";
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178 | }
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179 |
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180 | # we had some arguments that we weren't expecting
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181 | if ($unparsed_args > 1) {
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182 | pop(@ARGV); # assume that the last arg is the plugin name
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183 | gsprintf(STDERR, "{common.invalid_options}\n\n", join (',', @ARGV));
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184 | PrintUsage::print_txt_usage($options, "{pluginfo.params}", 1);
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185 | die "\n";
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186 | }
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187 |
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188 | my $plugin = shift (@ARGV);
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189 | if (defined $plugin) {
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190 | $plugin =~ s/\.pm$//; # allow xxxPlugin.pm as the argument
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191 | }
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192 |
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193 | if ($site ne "") {
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194 | # assume Greenstone 3
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195 | $gs_version = "3" if $gs_version eq "";
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196 | if ($collection ne "") {
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197 | $ENV{'GSDLCOLLECTDIR'} = &util::filename_cat ($ENV{'GSDL3HOME'}, "sites", $site, "collect", $collection);
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198 | } else {
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199 | # Probably more useful to default to GS2 area for plugins
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200 | $ENV{'GSDLCOLLECTDIR'} = $ENV{'GSDLHOME'};
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201 | }
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202 | }
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203 | else {
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204 | $gs_version = "2" if $gs_version eq "";
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205 | if ($collection ne "") {
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206 | $ENV{'GSDLCOLLECTDIR'} = &util::filename_cat ($ENV{'GSDLHOME'}, "collect", $collection);
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207 | } else {
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208 | $ENV{'GSDLCOLLECTDIR'} = $ENV{'GSDLHOME'};
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209 | }
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210 | }
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211 |
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212 | if ($listall || $describeall) {
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213 | my $plugins_dir = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}, "perllib", "plugins");
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214 | my @plugin_list = ();
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215 | if (opendir (INDIR, $plugins_dir)) {
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216 | @plugin_list = grep (/Plugin\.pm$/, readdir (INDIR));
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217 | closedir (INDIR);
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218 | }
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219 |
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220 | if ((defined $ENV{'GSDLEXTS'}) && ($collection eq "")) {
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221 | my @extensions = split(/:/,$ENV{'GSDLEXTS'});
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222 | foreach my $e (@extensions) {
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223 | my $ext_prefix = &util::filename_cat($ENV{'GSDLHOME'},"ext",$e);
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224 | my $ext_plugins_dir = &util::filename_cat($ext_prefix, "perllib", "plugins");
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225 |
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226 | if (opendir (INDIR, $ext_plugins_dir)) {
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227 | my @ext_plugin_list = grep (/Plugin\.pm$/, readdir (INDIR));
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228 | closedir (INDIR);
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229 |
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230 | push(@plugin_list,@ext_plugin_list);
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231 | }
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232 |
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233 | }
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234 | }
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235 | if ((defined $ENV{'GSDL3EXTS'}) && ($collection eq "")) {
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236 | my @extensions = split(/:/,$ENV{'GSDL3EXTS'});
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237 | foreach my $e (@extensions) {
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238 | my $ext_prefix = &util::filename_cat($ENV{'GSDL3SRCHOME'},"ext",$e);
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239 | my $ext_plugins_dir = &util::filename_cat($ext_prefix, "perllib", "plugins");
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240 |
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241 | if (opendir (INDIR, $ext_plugins_dir)) {
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242 | my @ext_plugin_list = grep (/Plugin\.pm$/, readdir (INDIR));
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243 | closedir (INDIR);
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244 |
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245 | push(@plugin_list,@ext_plugin_list);
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246 | }
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247 |
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248 | }
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249 | }
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250 |
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251 | # load up the plugins before writing out the xml so that any error
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252 | # messages are not inside the XML output (can cause parsing to fail)
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253 | my @plugobj_list;
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254 | foreach my $plugin (@plugin_list) {
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255 | $plugin =~ s/\.pm$//;
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256 | my $plugobj = &plugin::load_plugin_for_info ($plugin, $gs_version);
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257 | push (@plugobj_list, $plugobj);
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258 | }
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259 |
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260 | &gsprintf::set_print_xml_tags();
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261 | print STDERR "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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262 | print STDERR "<PluginList length=\"" . scalar(@plugin_list) . "\">\n";
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263 | foreach my $plugobj (@plugobj_list) {
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264 | if ($describeall) {
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265 | $plugobj->print_xml_usage(0);
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266 | }
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267 | else {
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268 | $plugobj->print_xml_usage(0, 1);
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269 | }
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270 | }
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271 | print STDERR "</PluginList>\n";
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272 |
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273 |
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274 | }
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275 | else {
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276 | &print_single_plugin($plugin, $gs_version, $xml, 1);
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277 | }
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278 | }
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279 |
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280 |
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281 | sub print_single_plugin {
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282 | my ($plugin, $gs_version, $xml, $header) = @_;
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283 | my $plugobj = &plugin::load_plugin_for_info ($plugin, $gs_version);
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284 | if ($xml) {
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285 | &gsprintf::set_print_xml_tags();
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286 | $plugobj->print_xml_usage($header);
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287 | }
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288 | else {
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289 |
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290 | # this causes us to automatically send output to a pager, if one is
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291 | # set, AND our output is going to a terminal
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292 | # active state perl on windows doesn't do open(handle, "-|");
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293 | if ($ENV{'GSDLOS'} !~ /windows/ && -t STDOUT) {
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294 | my $pager = $ENV{"PAGER"};
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295 | if (! $pager) {$pager="(less || more)"}
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296 | my $pid = open(STDIN, "-|"); # this does a fork... see man perlipc(1)
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297 | if (!defined $pid) {
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298 | gsprintf(STDERR, "pluginfo.pl - can't fork: $!");
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299 | } else {
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300 | if ($pid != 0) { # parent (ie forking) process. child gets 0
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301 | exec ($pager);
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302 | }
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303 | }
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304 | open(STDERR,">&STDOUT"); # so it's easier to pipe output
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305 | }
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306 |
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307 | gsprintf(STDERR, "\n{pluginfo.passing_options}\n\n");
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308 | gsprintf(STDERR, "{pluginfo.option_types}:\n\n");
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309 | gsprintf(STDERR, "{pluginfo.specific_options}\n\n");
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310 | gsprintf(STDERR, "{pluginfo.general_options}\n\n");
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311 | gsprintf(STDERR, "$plugin {pluginfo.info}:\n\n");
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312 |
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313 | $plugobj->print_txt_usage();
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314 | }
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315 |
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316 | }
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317 |
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318 | &main ();
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