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 | # downloadfrom.pl -- program to download files from an external server
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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) 2006 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 | package downloadfrom;
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29 |
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30 | BEGIN {
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31 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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32 | die "GSDLOS not set\n" unless defined $ENV{'GSDLOS'};
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33 | die "HOME not set\n" unless defined $ENV{'HOME'};
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34 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
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35 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib/cpan");
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36 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib/downloaders");
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37 | }
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38 |
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39 | use strict;
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40 | no strict 'subs';
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41 | use parse2;
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42 | use download;
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43 | use gsprintf 'gsprintf';
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44 | use printusage;
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45 |
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46 | my $download_mode_list =
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47 | [ { 'name' => "Web",
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48 | 'desc' => "{downloadfrom.download_mode.Web}",
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49 | 'downloadname' => "WebDownload" },
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50 | { 'name' => "OAI",
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51 | 'desc' => "{downloadfrom.download_mode.OAI}",
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52 | 'downloadname' => "OAIDownload" },
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53 | { 'name' => "Z39.50",
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54 | 'desc' => "{downloadfrom.download_mode.Z3950}",
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55 | 'downloadname' => "Z3950Download" },
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56 | { 'name' => "SRW",
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57 | 'desc' => "{downloadfrom.download_mode.SRW}",
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58 | 'downloadname' => "SRWDownload" } ];
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59 |
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60 | my $arguments =
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61 | [ { 'name' => "download_mode",
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62 | 'desc' => "{downloadfrom.download_mode}",
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63 | 'type' => "enum",
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64 | 'list' => $download_mode_list,
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65 | 'reqd' => "yes" },
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66 | { 'name' => "cache_dir",
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67 | 'desc' => "{downloadfrom.cache_dir}",
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68 | 'type' => "string",
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69 | 'deft' => "$ENV{'HOME'}/.gli/cache",
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70 | 'reqd' => "no" },
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71 | { 'name' => "gli",
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72 | 'desc' => "",
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73 | 'type' => "flag",
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74 | 'reqd' => "no",
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75 | 'hiddengli' => "yes" },
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76 | { 'name' => "info", ,
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77 | 'desc' => "{downloadfrom.info}",
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78 | 'type' => "flag",
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79 | 'reqd' => "no"}
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80 | ];
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81 |
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82 | my $options = { 'name' => "downloadfrom.pl",
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83 | 'desc' => "{downloadfrom.desc}",
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84 | 'args' => $arguments };
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85 |
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86 |
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87 | # This function return the coresponding mode with a given mode string.
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88 | sub findMode
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89 | {
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90 | my ($strInput) = @_;
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91 |
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92 | foreach my $hashMode (@$download_mode_list)
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93 | {
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94 | if($strInput eq $hashMode->{'name'})
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95 | {
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96 | return $hashMode->{'downloadname'};
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97 | }
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98 | }
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99 | return "";
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100 | }
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101 |
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102 | # main program
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103 | sub main
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104 | {
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105 |
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106 | my $hashOptions = {};
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107 | my ($strMode,$objMode,$pntArg);
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108 | $pntArg = \@ARGV;
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109 |
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110 | # Parsing the General options for downloadfrom.pl,
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111 | # this parsing operation will allow extra options,
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112 | # since there might be some arguments for Download.
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113 | # extra arguments will be detected by the Downloads
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114 | parse2::parse(\@ARGV,$arguments,$hashOptions,"allow_extra_options");
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115 | # hashOptions: This is a hash map which maps to
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116 | # downloadfrom's arguments
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117 | # $hashOptions->{'cache_dir'}
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118 | # $hashOptions->{'download_mode'}
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119 | # $hashOptions->{'gli'}
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120 | # $hashOptions->{'info'}
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121 |
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122 | $strMode = &findMode($hashOptions->{'download_mode'});
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123 |
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124 | if ($strMode eq "") {
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125 | &gsprintf(STDERR, "{downloadfrom.incorrect_mode}\n");
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126 | &PrintUsage::print_txt_usage($options, "{downloadfrom.params}");
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127 | die "\n";
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128 |
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129 | }
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130 | $objMode = &download::load_download($strMode, $pntArg);
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131 |
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132 | if($hashOptions->{'info'})
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133 | {
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134 |
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135 | my $blnResult = &download::get_information($objMode);
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136 | }
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137 | else
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138 | {
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139 | print "downloadfrom.pl start gathering data by using $strMode...\n\n";
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140 |
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141 | my $blnResult = &download::process($objMode,$hashOptions);
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142 |
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143 | ($blnResult eq "true")?
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144 | print "\ndownloadfrom.pl has completed data gathering\n":
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145 | print "\ndownloadfrom.pl has failed to gather data\n";
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146 | }
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147 | }
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148 |
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149 |
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150 | &main();
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