[723] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * extlinkaction.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 |
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| 27 | #include <string.h>
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| 28 | #include "extlinkaction.h"
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[869] | 29 | #include "OIDtools.h"
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[827] | 30 | #include "cgiutils.h"
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[723] | 31 |
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| 32 | extlinkaction::extlinkaction () {
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| 33 |
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| 34 | // this action uses cgi variables "a", "d", and "href"
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| 35 |
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| 36 | cgiarginfo arg_ainfo;
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| 37 | arg_ainfo.shortname = "a";
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| 38 | arg_ainfo.longname = "action";
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| 39 | arg_ainfo.multiplechar = true;
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| 40 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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| 41 | arg_ainfo.argdefault = "extlink";
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| 42 | arg_ainfo.savedarginfo = cgiarginfo::must;
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| 43 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 44 |
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| 45 | arg_ainfo.shortname = "el";
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| 46 | arg_ainfo.longname = "external link preference";
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| 47 | arg_ainfo.multiplechar = true;
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| 48 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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| 49 | arg_ainfo.argdefault = "prompt";
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| 50 | arg_ainfo.savedarginfo = cgiarginfo::must;
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| 51 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 52 |
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| 53 | arg_ainfo.shortname = "d";
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| 54 | arg_ainfo.longname = "document OID";
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| 55 | arg_ainfo.multiplechar = true;
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| 56 | arg_ainfo.defaultstatus = cgiarginfo::none;
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| 57 | arg_ainfo.argdefault = "";
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| 58 | arg_ainfo.savedarginfo = cgiarginfo::can;
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| 59 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 60 |
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| 61 | arg_ainfo.shortname = "href";
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| 62 | arg_ainfo.longname = "URL of external link";
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| 63 | arg_ainfo.multiplechar = true;
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| 64 | arg_ainfo.defaultstatus = cgiarginfo::none;
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| 65 | arg_ainfo.argdefault = "";
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| 66 | arg_ainfo.savedarginfo = cgiarginfo::can;
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| 67 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 68 |
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[756] | 69 | arg_ainfo.shortname = "rl";
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| 70 | arg_ainfo.longname = "is relative link";
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| 71 | arg_ainfo.multiplechar = false;
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| 72 | arg_ainfo.defaultstatus = cgiarginfo::none;
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| 73 | arg_ainfo.argdefault = "0";
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| 74 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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| 75 | argsinfo.addarginfo (NULL, arg_ainfo);
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| 76 |
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[723] | 77 | }
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| 78 |
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| 79 | extlinkaction::~extlinkaction () {
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| 80 | }
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| 81 |
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| 82 |
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[869] | 83 | void extlinkaction::get_cgihead_info (cgiargsclass &args, recptprotolistclass *protos,
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| 84 | response_t &response, text_t &response_data,
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| 85 | ostream &logout) {
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[723] | 86 |
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[869] | 87 | text_t link;
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| 88 | if (get_link (args, protos, link, logout)) {
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| 89 | response = location;
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| 90 | response_data = link;
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| 91 | return;
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| 92 | }
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| 93 |
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| 94 | // external link
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| 95 | if (!link.empty()) {
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| 96 | if (args["el"] == "direct") {
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[723] | 97 | response = location;
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[869] | 98 | response_data = link;
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| 99 | return;
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[723] | 100 | }
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[869] | 101 | }
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| 102 |
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| 103 | response = content;
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| 104 | response_data = "text/html";
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[723] | 105 | }
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| 106 |
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[756] | 107 | void extlinkaction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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| 108 | recptprotolistclass * /*protos*/,
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| 109 | ostream &/*logout*/) {
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[723] | 110 |
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| 111 | // define_internal_macros sets the following macros:
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| 112 |
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| 113 | // _nexturl_ link to external page
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| 114 | // _prevdoc_ link to previous document
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[1443] | 115 | // disp.setmacro("nexturl", "extlink", cgi_safe(args["href"]));
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| 116 | // problem in whist, above line changed. Perhaps decode_cgi_arg ??
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| 117 | // see also HTML plugin
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[869] | 118 | disp.setmacro("nexturl", "extlink", args["href"]);
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[723] | 119 | disp.setmacro("prevdoc", "extlink", args["d"]);
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| 120 | }
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| 121 |
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| 122 |
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[869] | 123 | // if link is found returns true and url in link, otherwise returns
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| 124 | // false
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| 125 | bool extlinkaction::get_link (cgiargsclass &args, recptprotolistclass *protos,
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| 126 | text_t &link, ostream &logout) {
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| 127 |
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| 128 | text_t &arg_href = args["href"];
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| 129 | text_t &thiscollection = args["c"];
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| 130 | if (arg_href.empty()) return false;
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| 131 |
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| 132 | if (args["rl"] == "1") {
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| 133 |
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| 134 | FilterResponse_t response;
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| 135 | text_tset metadata;
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| 136 | metadata.insert ("section");
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| 137 |
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| 138 | recptproto *collectproto = protos->getrecptproto (thiscollection, logout);
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| 139 |
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| 140 | if (get_info (arg_href, thiscollection, metadata, false, collectproto, response, logout)) {
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| 141 | if (!response.docInfo[0].metadata["section"].values[0].empty()) {
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| 142 | link = "_httpdoc_&d=" + response.docInfo[0].metadata["section"].values[0];
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| 143 | return true;
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| 144 | }
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| 145 | }
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| 146 |
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| 147 | // need to see if link exists in any other collection
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| 148 | // if cross-collection searching/browsing is turned on
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| 149 | if (args["ccs"] == "1" && !args["cc"].empty()) {
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| 150 | text_tarray collections;
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| 151 | splitchar (args["cc"].begin(), args["cc"].end(), ',', collections);
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| 152 |
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| 153 | text_tarray::const_iterator col_here = collections.begin();
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| 154 | text_tarray::const_iterator col_end = collections.end();
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| 155 |
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| 156 | while (col_here != col_end) {
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| 157 |
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| 158 | // don't need to check current collection again
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| 159 | if (*col_here == thiscollection) {col_here ++; continue;}
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| 160 |
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| 161 | recptproto *collectproto = protos->getrecptproto (*col_here, logout);
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| 162 | if (collectproto == NULL) {col_here ++; continue;}
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| 163 |
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| 164 | if (get_info (arg_href, *col_here, metadata, false, collectproto, response, logout)) {
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| 165 | if (!response.docInfo[0].metadata["section"].values[0].empty()) {
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| 166 | link = "_httpdoc_&c=" + *col_here + "&d=" +
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| 167 | response.docInfo[0].metadata["section"].values[0];
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| 168 | return true;
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| 169 | }
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| 170 | }
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| 171 | col_here ++;
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| 172 | }
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| 173 | }
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| 174 | return false;
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| 175 |
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| 176 | } else {
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| 177 | // link is external
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| 178 | link = arg_href;
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| 179 | return false;
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| 180 | }
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| 181 | }
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| 182 |
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| 183 |
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| 184 | bool extlinkaction::do_action (cgiargsclass &args, recptprotolistclass *protos,
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[756] | 185 | browsermapclass * /*browsers*/, displayclass &disp,
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| 186 | outconvertclass &outconvert, ostream &textout,
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[869] | 187 | ostream &logout) {
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[723] | 188 |
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[869] | 189 | if (args["href"].empty()) {
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| 190 | // oops, this shouldn't happen
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| 191 | textout << outconvert << disp << ("_extlink:header_\n")
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| 192 | << ("_extlink:notfoundcontent_\n")
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| 193 | << ("_extlink:footer_\n");
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| 194 | return true;
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| 195 | }
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| 196 |
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| 197 | if (args["rl"] == "1") {
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| 198 | // need to see if link exists in any other collection
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| 199 | // if cross-collection searching/browsing is turned on
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| 200 | if (args["ccs"] == "1" && !args["cc"].empty()) {
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| 201 |
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| 202 | FilterResponse_t response;
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| 203 | text_tset metadata;
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| 204 | metadata.insert ("section");
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| 205 | text_tarray collections;
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| 206 | splitchar (args["cc"].begin(), args["cc"].end(), ',', collections);
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| 207 |
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| 208 | text_tarray::const_iterator col_here = collections.begin();
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| 209 | text_tarray::const_iterator col_end = collections.end();
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| 210 |
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| 211 | while (col_here != col_end) {
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| 212 |
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| 213 | // don't need to check current collection
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| 214 | if (*col_here == args["c"]) {col_here ++; continue;}
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| 215 |
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| 216 | recptproto *collectproto = protos->getrecptproto (*col_here, logout);
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| 217 |
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| 218 | if (get_info (args["href"], *col_here, metadata, false, collectproto, response, logout)) {
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| 219 | if (!response.docInfo[0].metadata["section"].values[0].empty()) {
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| 220 | text_t collectionname = *col_here;
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| 221 | metadata.erase (metadata.begin(), metadata.end());
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| 222 | metadata.insert ("collectionname");
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| 223 | FilterResponse_t nresponse;
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| 224 | if (get_info ("collection", *col_here, metadata, false, collectproto, nresponse, logout)) {
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| 225 | if (!nresponse.docInfo[0].metadata["collectionname"].values[0].empty())
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| 226 | collectionname = nresponse.docInfo[0].metadata["collectionname"].values[0];
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| 227 | }
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| 228 | textout << outconvert << disp << ("_extlink:header_\n")
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| 229 | << ("_extlink:foundintcontent_(" + *col_here + ", " + collectionname +
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| 230 | ", " + response.docInfo[0].metadata["section"].values[0] + "\n")
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| 231 | << ("_extlink:footer_\n");
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| 232 | return true;
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| 233 | }
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[723] | 234 | }
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[869] | 235 | col_here ++;
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| 236 | }
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[723] | 237 | }
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[869] | 238 | textout << outconvert << disp << ("_extlink:header_\n")
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| 239 | << ("_extlink:notfoundcontent_\n")
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| 240 | << ("_extlink:footer_\n");
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| 241 |
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| 242 |
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| 243 | } else {
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| 244 | // link is external
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| 245 | textout << outconvert << disp << ("_extlink:header_\n")
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| 246 | << ("_extlink:foundcontent_\n")
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| 247 | << ("_extlink:footer_\n");
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| 248 | }
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[723] | 249 |
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| 250 | return true;
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| 251 | }
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