| 1 | /**********************************************************************
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| 2 | *
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| 3 | * rssaction.cpp --
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| 4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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| 5 | *
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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 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | *
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| 24 | *********************************************************************/
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| 25 |
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| 26 | #include "gsdl_modules_cfg.h"
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| 27 | #ifdef USE_RSS
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| 28 |
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| 29 | #include "fileutil.h"
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| 30 |
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| 31 | #include "rssaction.h"
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| 32 |
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| 33 | rssaction::rssaction () {
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| 34 | // this action uses cgi variable "a"
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| 35 | cgiarginfo arg_ainfo;
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| 36 | arg_ainfo.shortname = "a";
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| 37 | arg_ainfo.longname = "action";
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| 38 | arg_ainfo.multiplechar = true;
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| 39 | arg_ainfo.multiplevalue = false;
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| 40 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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| 41 | arg_ainfo.argdefault = "rss";
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| 42 | arg_ainfo.savedarginfo = cgiarginfo::must;
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| 43 |
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| 44 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 45 |
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| 46 | }
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| 47 |
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| 48 | void rssaction::get_cgihead_info (cgiargsclass &/*args*/, recptprotolistclass * /*protos*/,
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| 49 | response_t &response, text_t &response_data,
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| 50 | ostream &/*logout*/) {
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| 51 | response = content;
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| 52 | response_data = "application/rdf+xml";
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| 53 | }
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| 54 |
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| 55 | void rssaction::generate_rss_header( displayclass &disp,
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| 56 | outconvertclass &outconvert, ostream &textout,
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| 57 | ostream &logout)
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| 58 | {
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| 59 | textout << outconvert << disp
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| 60 | << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
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| 61 | << "<rss version=\"2.0\"\n"
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| 62 | << "xmlns:content=\"http://purl.org/rss/1.0/modules/content/\"\n"
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| 63 | << " xmlns:taxo=\"http://purl.org/rss/1.0/modules/taxonomy/\"\n"
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| 64 | << " xmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n"
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| 65 | << " xmlns:syn=\"http://purl.org/rss/1.0/modules/syndication/\"\n"
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| 66 | << " xmlns:admin=\"http://webns.net/mvcb/\">\n"
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| 67 |
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| 68 | << "<channel>\n"
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| 69 | << " <title>_collectionname_</title>\n"
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| 70 | << " <link>_httppageabout_</link>\n"
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| 71 | << " <description>_collectionextra_</description>\n"
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| 72 | << " <language>_cgiargl_</language>\n"
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| 73 | << " <pubDate>Thu, 23 Aug 1999 07:00:00 GMT</pubDate>\n"
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| 74 | << " <lastBuildDate>Thu, 23 Aug 1999 16:20:26 GMT</lastBuildDate>\n"
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| 75 | << " <managingEditor>_creator_</managingEditor>\n"
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| 76 | << " <webMaster>_maintainer_</webMaster>\n"
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| 77 |
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| 78 | << "<image>\n"
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| 79 | << " <title>_collectionname_</title>\n"
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| 80 | << " <url>_iconcollection_</url>\n"
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| 81 | << " <link>_httppageabout_</link>\n"
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| 82 | << " <description>_collectionextra_</description>\n"
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| 83 | << "</image>\n";
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| 84 | }
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| 85 |
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| 86 | void rssaction::generate_rss_content(text_t& rss_items, displayclass &disp,
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| 87 | outconvertclass &outconvert, ostream &textout,
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| 88 | ostream &logout)
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| 89 | {
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| 90 | textout << outconvert << disp << rss_items;
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| 91 | }
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| 92 |
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| 93 | void rssaction::generate_rss_footer( displayclass &disp,
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| 94 | outconvertclass &outconvert, ostream &textout,
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| 95 | ostream &logout)
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| 96 | {
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| 97 |
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| 98 | textout << outconvert << disp
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| 99 | << " </channel>\n"
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| 100 | << "</rss>\n";
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| 101 | }
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| 102 |
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| 103 |
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| 104 | bool rssaction::do_action (cgiargsclass &args, recptprotolistclass *protos,
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| 105 | browsermapclass * /*browsers*/, displayclass& disp,
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| 106 | outconvertclass &outconvert, ostream &textout,
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| 107 | ostream &logout) {
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| 108 | text_t rss_items;
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| 109 | bool success = false;
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| 110 | comerror_t err;
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| 111 |
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| 112 | text_t &arg_c = args["c"];
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| 113 |
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| 114 |
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| 115 | if (!args["c"].empty()) {
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| 116 | recptproto* collectproto = protos->getrecptproto (arg_c, logout);
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| 117 | if (collectproto != NULL) {
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| 118 | collectproto->get_rss_items (arg_c, gsdlhome, rss_items, err, logout);
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| 119 | if (err == noError) success = true;
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| 120 | // else a communication error
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| 121 | }
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| 122 | }
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| 123 |
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| 124 | generate_rss_header(disp,outconvert,textout,logout);
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| 125 | if(success) {
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| 126 | generate_rss_content(rss_items,disp,outconvert,textout,logout);
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| 127 | }
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| 128 | generate_rss_footer(disp,outconvert,textout,logout);
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| 129 |
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| 130 | return success;
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| 131 | };
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| 132 |
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| 133 | #endif //USE_RSS
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