1 | /**********************************************************************
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2 | *
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3 | * formattools.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 "formattools.h"
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27 | #include "cgiutils.h"
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28 | #include "recptprototools.h"
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29 | #include "OIDtools.h"
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30 | #include "summarise.h"
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31 |
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32 | #include <assert.h>
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33 |
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34 | // a few function prototypes
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35 |
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36 | static text_t format_string (const text_t& collection, recptproto* collectproto,
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37 | ResultDocInfo_t &docinfo, displayclass &disp,
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38 | format_t *formatlistptr, text_tmap &options,
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39 | ostream& logout);
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40 |
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41 | static bool parse_action (text_t::const_iterator &here, const text_t::const_iterator &end,
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42 | format_t *formatlistptr, text_tset &metadata, bool &getParents);
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43 |
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44 | static text_t format_summary (const text_t& collection, recptproto* collectproto,
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45 | ResultDocInfo_t &docinfo, displayclass &disp,
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46 | text_tmap &options, ostream& logout);
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47 | static text_t format_text (const text_t& collection, recptproto* collectproto,
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48 | ResultDocInfo_t &docinfo, displayclass &disp,
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49 | text_tmap &options, ostream& logout);
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50 |
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51 | static text_t expand_metadata(const text_t &metavalue, const text_t& collection,
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52 | recptproto* collectproto, ResultDocInfo_t &docinfo,
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53 | displayclass &disp, text_tmap &options,
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54 | ostream &logout);
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55 |
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56 |
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57 | void metadata_t::clear() {
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58 | metaname.clear();
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59 | metacommand = mNone;
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60 | mqualifier.parent = pNone;
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61 | mqualifier.sibling = sNone;
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62 | mqualifier.child = cNone;
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63 | parentoptions.clear();
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64 | siblingoptions.clear();
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65 | childoptions.clear();
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66 | }
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67 |
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68 | void decision_t::clear() {
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69 | command = dMeta;
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70 | meta.clear();
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71 | text.clear();
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72 | }
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73 |
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74 | void format_t::clear() {
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75 | command = comText;
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76 | decision.clear();
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77 | text.clear();
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78 | meta.clear();
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79 | nextptr = NULL;
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80 | ifptr = NULL;
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81 | elseptr = NULL;
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82 | orptr = NULL;
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83 | }
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84 |
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85 | void formatinfo_t::clear() {
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86 | DocumentImages = false;
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87 | DocumentTitles = true;
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88 | DocumentHeading = "{Or}{[parent(Top):Title],[Title],untitled}<br>";
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89 | DocumentContents = true;
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90 | DocumentArrowsBottom = true;
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91 | DocumentArrowsTop = false;
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92 | DocumentSearchResultLinks = false;
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93 | DocumentButtons.erase (DocumentButtons.begin(), DocumentButtons.end());
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94 | // DocumentButtons.push_back ("Expand Text");
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95 | // DocumentButtons.push_back ("Expand Contents");
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96 | DocumentButtons.push_back ("Detach");
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97 | DocumentButtons.push_back ("Highlight");
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98 | RelatedDocuments = "";
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99 | DocumentText = "[Text]";
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100 | formatstrings.erase (formatstrings.begin(), formatstrings.end());
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101 | DocumentUseHTML = false;
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102 | AllowExtendedOptions = false;
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103 | }
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104 |
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105 | // simply checks to see if formatstring begins with a <td> tag
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106 | bool is_table_content (const text_t &formatstring) {
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107 | text_t::const_iterator here = formatstring.begin();
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108 | text_t::const_iterator end = formatstring.end();
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109 |
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110 | while (here != end) {
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111 | if (*here != ' ') {
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112 | if ((*here == '<') && ((here+3) < end)) {
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113 | if ((*(here+1) == 't' || *(here+1) == 'T') &&
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114 | (*(here+2) == 'd' || *(here+2) == 'D') &&
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115 | (*(here+3) == '>' || *(here+3) == ' '))
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116 | return true;
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117 | } else return false;
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118 | }
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119 | ++here;
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120 | }
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121 | return false;
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122 | }
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123 |
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124 | bool is_table_content (const format_t *formatlistptr) {
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125 |
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126 | if (formatlistptr == NULL) return false;
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127 |
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128 | if (formatlistptr->command == comText)
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129 | return is_table_content (formatlistptr->text);
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130 |
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131 | return false;
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132 | }
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133 |
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134 | // returns false if key isn't in formatstringmap
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135 | bool get_formatstring (const text_t &key, const text_tmap &formatstringmap,
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136 | text_t &formatstring) {
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137 |
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138 | formatstring.clear();
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139 | text_tmap::const_iterator it = formatstringmap.find(key);
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140 | if (it == formatstringmap.end()) return false;
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141 | formatstring = (*it).second;
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142 | return true;
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143 | }
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144 |
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145 | // tries to find "key1key2" then "key1" then "key2"
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146 | bool get_formatstring (const text_t &key1, const text_t &key2,
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147 | const text_tmap &formatstringmap,
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148 | text_t &formatstring) {
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149 |
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150 | formatstring.clear();
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151 | text_tmap::const_iterator it = formatstringmap.find(key1 + key2);
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152 | if (it != formatstringmap.end()) {
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153 | formatstring = (*it).second;
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154 | return true;
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155 | }
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156 | it = formatstringmap.find(key1);
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157 | if (it != formatstringmap.end()) {
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158 | formatstring = (*it).second;
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159 | return true;
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160 | }
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161 | it = formatstringmap.find(key2);
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162 | if (it != formatstringmap.end()) {
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163 | formatstring = (*it).second;
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164 | return true;
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165 | }
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166 | return false;
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167 | }
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168 |
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169 |
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170 | text_t remove_namespace(const text_t &meta_name) {
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171 | text_t::const_iterator end = meta_name.end();
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172 | text_t::const_iterator it = findchar(meta_name.begin(), end, '.');
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173 | if (it != end) {
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174 | return substr(it+1, end);
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175 | }
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176 |
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177 | return meta_name;
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178 |
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179 | }
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180 | // returns a date of form _format:date_(year, month, day)
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181 | // input is date of type yyyy-?mm-?dd
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182 | // at least the year must be present in date
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183 | text_t format_date (const text_t &date) {
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184 |
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185 | if (date.size() < 4) return "";
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186 |
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187 | text_t::const_iterator datebegin = date.begin();
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188 |
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189 | text_t year = substr (datebegin, datebegin+4);
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190 | int chars_seen_so_far = 4;
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191 |
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192 | if (date[chars_seen_so_far] == '-') ++chars_seen_so_far ;
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193 | if (date.size() < chars_seen_so_far+2) return "_format:date_("+year+")";
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194 |
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195 | text_t month = substr (datebegin+chars_seen_so_far, datebegin+chars_seen_so_far+2);
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196 | int imonth = month.getint();
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197 | if (imonth <= 0 || imonth > 12) return "_format:date_("+year+")";
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198 |
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199 | chars_seen_so_far += 2;
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200 | if (date[chars_seen_so_far] == '-') ++chars_seen_so_far ;
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201 |
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202 | if (date.size() < chars_seen_so_far+2) return "_format:date_("+year+","+month+")";
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203 |
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204 | text_t day = substr (datebegin+chars_seen_so_far, datebegin+chars_seen_so_far+2);
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205 | if (day[0] == '0') day = substr (day.begin()+1, day.end());
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206 | int iday = day.getint();
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207 | if (iday <= 0 || iday > 31) return "_format:date_("+year+","+month+")";
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208 |
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209 | return "_format:date_("+year+","+month+","+day+")";
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210 | }
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211 |
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212 | // converts an iso639 language code to its English equivalent
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213 | // should we be checking that the macro exists??
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214 | text_t iso639 (const text_t &langcode) {
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215 | if (langcode.empty()) return "";
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216 | return "_iso639:iso639"+langcode+"_";
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217 | }
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218 |
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219 |
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220 | text_t get_href (const text_t &link) {
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221 |
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222 | text_t href;
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223 |
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224 | text_t::const_iterator here = findchar(link.begin(), link.end(), '"');
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225 | text_t::const_iterator end = link.end();
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226 | if (here == end) return g_EmptyText;
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227 |
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228 | ++here;
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229 | while (here != end) {
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230 | if (*here == '"') break;
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231 | href.push_back(*here);
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232 | ++here;
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233 | }
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234 |
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235 | return href;
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236 | }
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237 |
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238 | //this function gets the information associated with the relation
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239 | //metadata for the document associated with 'docinfo'. This relation
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240 | //metadata consists of a line of pairs containing 'collection, document OID'
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241 | //(this is the OID of the document related to the current document, and
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242 | //the collection the related document belongs to). For each of these pairs
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243 | //the title metadata is obtained and then an html link between the title
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244 | //of the related doc and the document's position (the document will be
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245 | //found in "<a href=\"_httpdocument_&c=collection&cl=search&d=OID">
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246 | //(where collection is the related documents collection, and OID is the
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247 | //related documents OID). A list of these html links are made for as many
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248 | //related documents as there are. This list is then returned. If there are
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249 | //no related documents available for the current document then the string
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250 | //'.. no related documents .. ' is returned.
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251 | text_t get_related_docs(const text_t& collection, recptproto* collectproto,
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252 | ResultDocInfo_t &docinfo, ostream& logout){
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253 |
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254 | text_tset metadata;
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255 |
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256 | //insert the metadata we wish to collect
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257 | metadata.insert("dc.Relation");
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258 | metadata.insert("Title");
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259 | metadata.insert("Subject"); //for emails, where title data doesn't apply
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260 |
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261 | FilterResponse_t response;
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262 | text_t relation = ""; //string for displaying relation metadata
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263 | text_t relationTitle = ""; //the related documents Title (or subject)
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264 | text_t relationOID = ""; //the related documents OID
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265 |
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266 | //get the information associated with the metadata for current doc
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267 | if (get_info (docinfo.OID, collection, "", metadata,
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268 | false, collectproto, response, logout)) {
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269 |
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270 | //if the relation metadata exists, store for displaying
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271 | if(!response.docInfo[0].metadata["dc.Relation"].values.empty()){
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272 | relationOID += response.docInfo[0].metadata["dc.Relation"].values[0];
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273 |
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274 | //split relation data into pairs of collectionname,ID number
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275 | text_tarray relationpairs;
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276 | splitchar (relationOID.begin(), relationOID.end(), ' ', relationpairs);
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277 |
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278 | text_tarray::const_iterator currDoc = relationpairs.begin();
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279 | text_tarray::const_iterator lastDoc = relationpairs.end();
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280 |
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281 | //iterate through the pairs to split and display
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282 | while(currDoc != lastDoc){
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283 |
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284 | //split pairs into collectionname and ID
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285 | text_tarray relationdata;
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286 | splitchar ((*currDoc).begin(), (*currDoc).end(), ',', relationdata);
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287 |
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288 | //get first element in the array (collection)
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289 | text_tarray::const_iterator doc_data = relationdata.begin();
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290 | text_t document_collection = *doc_data;
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291 | ++doc_data; //increment to get next item in array (oid)
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292 | text_t document_OID = *doc_data;
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293 |
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294 | //create html link to related document
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295 | relation += "<a href=\"_httpdocument_&c=" + document_collection;
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296 | relation += "&cl=search&d=" + document_OID;
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297 |
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298 | //get the information associated with the metadata for related doc
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299 | if (get_info (document_OID, document_collection, "", metadata,
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300 | false, collectproto, response, logout)) {
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301 |
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302 | //if title metadata doesn't exist, collect subject metadata
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303 | //if that doesn't exist, just call it 'related document'
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304 | if (!response.docInfo[0].metadata["Title"].values[0].empty())
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305 | relationTitle = response.docInfo[0].metadata["Title"].values[0];
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306 | else if (!response.docInfo[0].metadata["Subject"].values.empty())
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307 | relationTitle = response.docInfo[0].metadata["Subject"].values[0];
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308 | else relationTitle = "RELATED DOCUMENT";
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309 |
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310 | }
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311 |
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312 | //link the related document's title to its page
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313 | relation += "\">" + relationTitle + "</a>";
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314 | relation += " (" + document_collection + ")<br>";
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315 |
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316 | ++currDoc;
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317 | }
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318 | }
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319 |
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320 | }
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321 |
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322 | if(relation.empty()) //no relation data for documnet
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323 | relation = ".. no related documents .. ";
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324 |
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325 | return relation;
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326 | }
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327 |
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328 |
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329 |
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330 | static void get_parent_options (text_t &instring, metadata_t &metaoption) {
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331 |
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332 | assert (instring.size() > 7);
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333 | if (instring.size() <= 7) return;
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334 |
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335 | text_t meta, com, op;
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336 | bool inbraces = false;
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337 | bool inquotes = false;
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338 | bool foundcolon = false;
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339 | text_t::const_iterator here = instring.begin()+6;
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340 | text_t::const_iterator end = instring.end();
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341 | while (here != end) {
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342 | if (foundcolon) meta.push_back (*here);
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343 | else if (*here == '(') inbraces = true;
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344 | else if (*here == ')') inbraces = false;
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345 | else if (*here == '\'' && !inquotes) inquotes = true;
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346 | else if (*here == '\'' && inquotes) inquotes = false;
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347 | else if (*here == ':' && !inbraces) foundcolon = true;
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348 | else if (inquotes) op.push_back (*here);
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349 | else com.push_back (*here);
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350 | ++here;
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351 | }
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352 |
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353 | instring = meta;
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354 | if (com.empty())
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355 | metaoption.mqualifier.parent = pImmediate;
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356 | else if (com == "Top")
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357 | metaoption.mqualifier.parent = pTop;
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358 | else if (com == "All") {
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359 | metaoption.mqualifier.parent = pAll;
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360 | metaoption.parentoptions = op;
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361 | }
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362 | }
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363 |
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364 |
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365 | static void get_sibling_options (text_t &instring, metadata_t &metaoption) {
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366 |
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367 | assert (instring.size() > 8);
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368 | if (instring.size() <= 8) return;
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369 | text_t meta, com, op;
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370 | bool inbraces = false;
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371 | bool inquotes = false;
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372 | bool foundcolon = false;
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373 | text_t::const_iterator here = instring.begin()+7;
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374 | text_t::const_iterator end = instring.end();
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375 | while (here != end) {
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376 | if (foundcolon) meta.push_back (*here);
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377 | else if (*here == '(') inbraces = true;
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378 | else if (*here == ')') inbraces = false;
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379 | else if (*here == '\'' && !inquotes) inquotes = true;
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380 | else if (*here == '\'' && inquotes) inquotes = false;
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381 | else if (*here == ':' && !inbraces) foundcolon = true;
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382 | else if (inquotes) op.push_back (*here);
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383 | else com.push_back (*here);
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384 | ++here;
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385 | }
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386 |
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387 | instring = meta;
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388 | metaoption.siblingoptions.clear();
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389 |
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390 | if (com.empty()) {
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391 | metaoption.mqualifier.sibling = sAll;
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392 | metaoption.siblingoptions = " ";
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393 | }
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394 | else if (com == "first") {
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395 | metaoption.mqualifier.sibling = sNum;
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396 | metaoption.siblingoptions = "0";
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397 | }
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398 | else if (com == "last") {
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399 | metaoption.mqualifier.sibling = sNum;
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400 | metaoption.siblingoptions = "-2"; // == last
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401 | }
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402 | else if (com.getint()>0) {
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403 | metaoption.mqualifier.sibling = sNum;
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404 | int pos = com.getint()-1;
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405 | metaoption.siblingoptions +=pos;
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406 | }
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407 | else {
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408 | metaoption.mqualifier.sibling = sAll;
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409 | metaoption.siblingoptions = op;
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410 | }
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411 | }
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412 |
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413 | static void get_child_options (text_t &instring, metadata_t &metaoption) {
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414 |
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415 | assert (instring.size() > 6);
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416 | if (instring.size() <= 6) return;
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417 | text_t meta, com, op;
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418 | bool inbraces = false;
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419 | bool inquotes = false;
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420 | bool foundcolon = false;
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421 | text_t::const_iterator here = instring.begin()+5;
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422 | text_t::const_iterator end = instring.end();
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423 | while (here != end) {
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424 | if (foundcolon) meta.push_back (*here);
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425 | else if (*here == '(') inbraces = true;
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426 | else if (*here == ')') inbraces = false;
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427 | else if (*here == '\'' && !inquotes) inquotes = true;
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428 | else if (*here == '\'' && inquotes) inquotes = false;
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429 | else if (*here == ':' && !inbraces) foundcolon = true;
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430 | else if (inquotes) op.push_back (*here);
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431 | else com.push_back (*here);
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432 | ++here;
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433 | }
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434 |
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435 | instring = meta;
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436 | if (com.empty()) {
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437 | metaoption.mqualifier.child = cAll;
|
---|
438 | metaoption.childoptions = " ";
|
---|
439 | }
|
---|
440 | else if (com == "first") {
|
---|
441 | metaoption.mqualifier.child = cNum;
|
---|
442 | metaoption.childoptions = ".fc";
|
---|
443 | }
|
---|
444 | else if (com == "last") {
|
---|
445 | metaoption.mqualifier.child = cNum;
|
---|
446 | metaoption.childoptions = ".lc";
|
---|
447 | }
|
---|
448 | else if (com.getint()>0) {
|
---|
449 | metaoption.mqualifier.child = cNum;
|
---|
450 | metaoption.childoptions = "."+com;
|
---|
451 | }
|
---|
452 | else {
|
---|
453 | metaoption.mqualifier.child = cAll;
|
---|
454 | metaoption.childoptions = op;
|
---|
455 | }
|
---|
456 | }
|
---|
457 |
|
---|
458 |
|
---|
459 |
|
---|
460 | static void parse_meta (text_t &meta, metadata_t &metaoption,
|
---|
461 | text_tset &metadata, bool &getParents) {
|
---|
462 |
|
---|
463 | if (meta.size() > 8 && (substr(meta.begin(), meta.begin()+8) == "cgisafe:")) {
|
---|
464 | metaoption.metacommand |= mCgiSafe;
|
---|
465 | meta = substr (meta.begin()+8, meta.end());
|
---|
466 | }
|
---|
467 | if (meta.size() > 7 && (substr(meta.begin(), meta.begin()+7) == "format:")) {
|
---|
468 | metaoption.metacommand |= mSpecial;
|
---|
469 | meta = substr (meta.begin()+7, meta.end());
|
---|
470 | }
|
---|
471 |
|
---|
472 | if (meta.size() > 7 && (substr (meta.begin(), meta.begin()+6) == "parent")) {
|
---|
473 | getParents = true;
|
---|
474 | metaoption.metacommand |= mParent;
|
---|
475 | get_parent_options (meta, metaoption);
|
---|
476 | }
|
---|
477 | else if (meta.size() > 6 && (substr (meta.begin(), meta.begin()+5) == "child")) {
|
---|
478 | metaoption.metacommand |= mChild;
|
---|
479 | get_child_options (meta, metaoption);
|
---|
480 | metadata.insert("contains");
|
---|
481 | }
|
---|
482 | // parent and child can have sibling also
|
---|
483 | if (meta.size() > 8 && (substr (meta.begin(), meta.begin()+7) == "sibling")) {
|
---|
484 | metaoption.metacommand |= mSibling;
|
---|
485 | get_sibling_options (meta, metaoption);
|
---|
486 | }
|
---|
487 |
|
---|
488 | // check for ex. which may occur in format statements
|
---|
489 | if (meta.size()>3 && (substr(meta.begin(), meta.begin()+3) == "ex.")) {
|
---|
490 | meta = substr (meta.begin()+3, meta.end());
|
---|
491 | }
|
---|
492 | metadata.insert (meta);
|
---|
493 | metaoption.metaname = meta;
|
---|
494 | }
|
---|
495 |
|
---|
496 | static void parse_coll_meta(text_t &meta, metadata_t &metaoption) {
|
---|
497 | if (meta == "collection") {
|
---|
498 | // no qualifiers
|
---|
499 | metaoption.metaname = g_EmptyText;
|
---|
500 | return;
|
---|
501 | }
|
---|
502 | meta = substr (meta.begin()+11, meta.end());
|
---|
503 | metaoption.metaname = meta;
|
---|
504 |
|
---|
505 | }
|
---|
506 |
|
---|
507 | static void parse_meta (text_t &meta, format_t *formatlistptr,
|
---|
508 | text_tset &metadata, bool &getParents) {
|
---|
509 |
|
---|
510 | if (meta == "link")
|
---|
511 | formatlistptr->command = comLink;
|
---|
512 | else if (meta == "/link")
|
---|
513 | formatlistptr->command = comEndLink;
|
---|
514 |
|
---|
515 | else if (meta == "href")
|
---|
516 | formatlistptr->command = comHref;
|
---|
517 |
|
---|
518 | else if (meta == "num")
|
---|
519 | formatlistptr->command = comNum;
|
---|
520 |
|
---|
521 | else if (meta == "icon")
|
---|
522 | formatlistptr->command = comIcon;
|
---|
523 |
|
---|
524 | else if (meta == "Text")
|
---|
525 | formatlistptr->command = comDoc;
|
---|
526 |
|
---|
527 | else if (meta == "RelatedDocuments")
|
---|
528 | formatlistptr->command = comRel;
|
---|
529 |
|
---|
530 | else if (meta == "highlight")
|
---|
531 | formatlistptr->command = comHighlight;
|
---|
532 |
|
---|
533 | else if (meta == "/highlight")
|
---|
534 | formatlistptr->command = comEndHighlight;
|
---|
535 |
|
---|
536 | else if (meta == "Summary")
|
---|
537 | formatlistptr->command = comSummary;
|
---|
538 |
|
---|
539 | else if (meta == "DocImage")
|
---|
540 | formatlistptr->command = comImage;
|
---|
541 |
|
---|
542 | else if (meta == "DocTOC")
|
---|
543 | formatlistptr->command = comTOC;
|
---|
544 |
|
---|
545 | else if (meta == "DocumentButtonDetach")
|
---|
546 | formatlistptr->command = comDocumentButtonDetach;
|
---|
547 |
|
---|
548 | else if (meta == "DocumentButtonHighlight")
|
---|
549 | formatlistptr->command = comDocumentButtonHighlight;
|
---|
550 |
|
---|
551 | else if (meta == "DocumentButtonExpandContents")
|
---|
552 | formatlistptr->command = comDocumentButtonExpandContents;
|
---|
553 |
|
---|
554 | else if (meta == "DocumentButtonExpandText")
|
---|
555 | formatlistptr->command = comDocumentButtonExpandText;
|
---|
556 |
|
---|
557 | else if (meta == "DocOID")
|
---|
558 | formatlistptr->command = comOID;
|
---|
559 | else if (meta == "DocTopOID")
|
---|
560 | formatlistptr->command = comTopOID;
|
---|
561 | else if (meta == "DocRank")
|
---|
562 | formatlistptr->command = comRank;
|
---|
563 | else if (meta.size() >= 10 && (substr(meta.begin(), meta.begin()+10) == "collection")) {
|
---|
564 | formatlistptr->command = comCollection;
|
---|
565 | parse_coll_meta(meta, formatlistptr->meta);
|
---|
566 | }
|
---|
567 | else {
|
---|
568 | formatlistptr->command = comMeta;
|
---|
569 | parse_meta (meta, formatlistptr->meta, metadata, getParents);
|
---|
570 | }
|
---|
571 | }
|
---|
572 |
|
---|
573 |
|
---|
574 | static bool parse_string (const text_t &formatstring, format_t *formatlistptr,
|
---|
575 | text_tset &metadata, bool &getParents) {
|
---|
576 |
|
---|
577 | text_t text;
|
---|
578 | text_t::const_iterator here = formatstring.begin();
|
---|
579 | text_t::const_iterator end = formatstring.end();
|
---|
580 |
|
---|
581 | while (here != end) {
|
---|
582 |
|
---|
583 | if (*here == '\\') {
|
---|
584 | ++here;
|
---|
585 | if (here != end) text.push_back (*here);
|
---|
586 |
|
---|
587 | } else if (*here == '{') {
|
---|
588 | if (!text.empty()) {
|
---|
589 | formatlistptr->command = comText;
|
---|
590 | formatlistptr->text = text;
|
---|
591 | formatlistptr->nextptr = new format_t();
|
---|
592 | formatlistptr = formatlistptr->nextptr;
|
---|
593 |
|
---|
594 | text.clear();
|
---|
595 | }
|
---|
596 | if (parse_action (++here, end, formatlistptr, metadata, getParents)) {
|
---|
597 |
|
---|
598 | formatlistptr->nextptr = new format_t();
|
---|
599 | formatlistptr = formatlistptr->nextptr;
|
---|
600 | if (here == end) break;
|
---|
601 | }
|
---|
602 | } else if (*here == '[') {
|
---|
603 | if (!text.empty()) {
|
---|
604 | formatlistptr->command = comText;
|
---|
605 | formatlistptr->text = text;
|
---|
606 | formatlistptr->nextptr = new format_t();
|
---|
607 | formatlistptr = formatlistptr->nextptr;
|
---|
608 |
|
---|
609 | text.clear();
|
---|
610 | }
|
---|
611 | text_t meta;
|
---|
612 | ++here;
|
---|
613 | while (*here != ']') {
|
---|
614 | if (here == end) return false;
|
---|
615 | meta.push_back (*here);
|
---|
616 | ++here;
|
---|
617 | }
|
---|
618 | parse_meta (meta, formatlistptr, metadata, getParents);
|
---|
619 | formatlistptr->nextptr = new format_t();
|
---|
620 | formatlistptr = formatlistptr->nextptr;
|
---|
621 |
|
---|
622 | } else
|
---|
623 | text.push_back (*here);
|
---|
624 |
|
---|
625 | if (here != end) ++here;
|
---|
626 | }
|
---|
627 | if (!text.empty()) {
|
---|
628 | formatlistptr->command = comText;
|
---|
629 | formatlistptr->text = text;
|
---|
630 | formatlistptr->nextptr = new format_t();
|
---|
631 | formatlistptr = formatlistptr->nextptr;
|
---|
632 |
|
---|
633 | }
|
---|
634 | return true;
|
---|
635 | }
|
---|
636 |
|
---|
637 |
|
---|
638 | static bool parse_action (text_t::const_iterator &here, const text_t::const_iterator &end,
|
---|
639 | format_t *formatlistptr, text_tset &metadata, bool &getParents) {
|
---|
640 |
|
---|
641 | text_t::const_iterator it = findchar (here, end, '}');
|
---|
642 | if (it == end) return false;
|
---|
643 |
|
---|
644 | text_t com = substr (here, it);
|
---|
645 | here = findchar (it, end, '{');
|
---|
646 | if (here == end) return false;
|
---|
647 | else ++here;
|
---|
648 |
|
---|
649 | if (com == "If" || com == "if" || com == "IF") formatlistptr->command = comIf;
|
---|
650 | else if (com == "Or" || com == "or" || com == "OR") formatlistptr->command = comOr;
|
---|
651 | else return false;
|
---|
652 |
|
---|
653 | int commacount = 0;
|
---|
654 | text_t text;
|
---|
655 | while (here != end) {
|
---|
656 |
|
---|
657 | if (*here == '\\') {
|
---|
658 | ++here;
|
---|
659 | if (here != end) text.push_back(*here);
|
---|
660 |
|
---|
661 | }
|
---|
662 |
|
---|
663 | else if (*here == ',' || *here == '}' || *here == '{') {
|
---|
664 |
|
---|
665 | if (formatlistptr->command == comOr) {
|
---|
666 | // the {Or}{this, or this, or this, or this} statement
|
---|
667 | format_t *or_ptr;
|
---|
668 |
|
---|
669 | // find the next unused orptr
|
---|
670 | if (formatlistptr->orptr == NULL) {
|
---|
671 | formatlistptr->orptr = new format_t();
|
---|
672 | or_ptr = formatlistptr->orptr;
|
---|
673 | } else {
|
---|
674 | or_ptr = formatlistptr->orptr;
|
---|
675 | while (or_ptr->nextptr != NULL)
|
---|
676 | or_ptr = or_ptr->nextptr;
|
---|
677 | or_ptr->nextptr = new format_t();
|
---|
678 | or_ptr = or_ptr->nextptr;
|
---|
679 | }
|
---|
680 |
|
---|
681 | if (!text.empty())
|
---|
682 | {
|
---|
683 | if (!parse_string(text, or_ptr, metadata, getParents)) { return false; }
|
---|
684 | }
|
---|
685 |
|
---|
686 | if (*here == '{')
|
---|
687 | {
|
---|
688 | // Supports: {Or}{[Booktitle],[Title],{If}{[XXXX],aaa,bbb}}
|
---|
689 | // but not : {Or}{[Booktitle],[Title]{If}{[XXXX],aaa,bbb}}
|
---|
690 | // The latter can always be re-written:
|
---|
691 | // {Or}{[Booktitle],{If}{[Title],[Title]{If}{[XXXX],aaa,bbb}}}
|
---|
692 |
|
---|
693 | if (!text.empty()) // already used up allocated format_t
|
---|
694 | {
|
---|
695 | // => allocate new one for detected action
|
---|
696 | or_ptr->nextptr = new format_t();
|
---|
697 | or_ptr = or_ptr->nextptr;
|
---|
698 | }
|
---|
699 | if (!parse_action(++here, end, or_ptr, metadata, getParents))
|
---|
700 | {
|
---|
701 | return false;
|
---|
702 | }
|
---|
703 | }
|
---|
704 | else
|
---|
705 | {
|
---|
706 | if (*here == '}') break;
|
---|
707 | }
|
---|
708 | text.clear();
|
---|
709 |
|
---|
710 | }
|
---|
711 |
|
---|
712 | // Parse an {If}{decide,do,else} statement
|
---|
713 | else {
|
---|
714 |
|
---|
715 | // Read the decision component.
|
---|
716 | if (commacount == 0) {
|
---|
717 | // Decsion can be a metadata element, or a piece of text.
|
---|
718 | // Originally Stefan's code, updated 25/10/2000 by Gordon.
|
---|
719 |
|
---|
720 | text_t::const_iterator beginbracket = text.begin();
|
---|
721 | text_t::const_iterator endbracket = (text.end() - 1);
|
---|
722 |
|
---|
723 | // Decision is based on a metadata element
|
---|
724 | if ((*beginbracket == '[') && (*endbracket == ']')) {
|
---|
725 | // Ignore the surrounding square brackets
|
---|
726 | text_t meta = substr (beginbracket+1, endbracket);
|
---|
727 | parse_meta (meta, formatlistptr->decision.meta, metadata, getParents);
|
---|
728 | ++commacount;
|
---|
729 | text.clear();
|
---|
730 | }
|
---|
731 |
|
---|
732 | // Decision is a piece of text (probably a macro like _cgiargmode_).
|
---|
733 | else {
|
---|
734 |
|
---|
735 | // hunt for any metadata in string, which might be uses in
|
---|
736 | // to test a condition, e.g. [Format] eq 'PDF'
|
---|
737 | format_t* dummyformat = new format_t();
|
---|
738 | // update which metadata fields needed
|
---|
739 | // (not interested in updatng formatlistptr)
|
---|
740 | parse_string (text, dummyformat, metadata, getParents);
|
---|
741 | delete dummyformat;
|
---|
742 |
|
---|
743 | formatlistptr->decision.command = dText;
|
---|
744 | formatlistptr->decision.text = text;
|
---|
745 | ++commacount;
|
---|
746 | text.clear();
|
---|
747 | }
|
---|
748 | }
|
---|
749 |
|
---|
750 | // Read the "then" and "else" components of the {If} statement.
|
---|
751 | else {
|
---|
752 | format_t** nextlistptr = NULL;
|
---|
753 | if (commacount == 1) {
|
---|
754 | nextlistptr = &formatlistptr->ifptr;
|
---|
755 | } else if (commacount == 2 ) {
|
---|
756 | nextlistptr = &formatlistptr->elseptr;
|
---|
757 | } else {
|
---|
758 | return false;
|
---|
759 | }
|
---|
760 |
|
---|
761 | if (!text.empty()) {
|
---|
762 | if (*nextlistptr == NULL) {
|
---|
763 | *nextlistptr = new format_t();
|
---|
764 | } else {
|
---|
765 |
|
---|
766 | // skip to the end of any format_t statements already added
|
---|
767 | while ((*nextlistptr)->nextptr != NULL)
|
---|
768 | {
|
---|
769 | nextlistptr = &(*nextlistptr)->nextptr;
|
---|
770 | }
|
---|
771 |
|
---|
772 | (*nextlistptr)->nextptr = new format_t();
|
---|
773 | nextlistptr = &(*nextlistptr)->nextptr;
|
---|
774 | }
|
---|
775 |
|
---|
776 | if (!parse_string (text, *nextlistptr, metadata, getParents))
|
---|
777 | {
|
---|
778 | return false;
|
---|
779 | }
|
---|
780 | text.clear();
|
---|
781 | }
|
---|
782 |
|
---|
783 | if (*here == '{')
|
---|
784 | {
|
---|
785 | if (*nextlistptr == NULL) {
|
---|
786 | *nextlistptr = new format_t();
|
---|
787 | } else {
|
---|
788 | // skip to the end of any format_t statements already added
|
---|
789 | while ((*nextlistptr)->nextptr != NULL)
|
---|
790 | {
|
---|
791 | nextlistptr = &(*nextlistptr)->nextptr;
|
---|
792 | }
|
---|
793 |
|
---|
794 | (*nextlistptr)->nextptr = new format_t();
|
---|
795 | nextlistptr = &(*nextlistptr)->nextptr;
|
---|
796 | }
|
---|
797 |
|
---|
798 | if (!parse_action(++here, end, *nextlistptr, metadata, getParents))
|
---|
799 | {
|
---|
800 | return false;
|
---|
801 | }
|
---|
802 | }
|
---|
803 | else
|
---|
804 | {
|
---|
805 | if (*here == '}') break;
|
---|
806 | ++commacount;
|
---|
807 | }
|
---|
808 | }
|
---|
809 | }
|
---|
810 |
|
---|
811 | } else text.push_back(*here);
|
---|
812 |
|
---|
813 | if (here != end) ++here;
|
---|
814 | }
|
---|
815 |
|
---|
816 | return true;
|
---|
817 | }
|
---|
818 |
|
---|
819 |
|
---|
820 | bool parse_formatstring (const text_t &formatstring, format_t *formatlistptr,
|
---|
821 | text_tset &metadata, bool &getParents) {
|
---|
822 |
|
---|
823 | formatlistptr->clear();
|
---|
824 | getParents = false;
|
---|
825 |
|
---|
826 | return (parse_string (formatstring, formatlistptr, metadata, getParents));
|
---|
827 | }
|
---|
828 |
|
---|
829 | // position -1 for all, -2 for the last, 0 for the first, or x for a particular piece
|
---|
830 | // metainfo has all the values for the metadata, meta has the request metadata name and options, position tells which values to get
|
---|
831 | static text_t get_formatted_meta_text(MetadataInfo_t &metainfo, const metadata_t &meta, int position, bool no_cgisafe = false)
|
---|
832 | {
|
---|
833 | text_t no_ns_metaname = remove_namespace(meta.metaname);
|
---|
834 | text_t tmp;
|
---|
835 | bool first = true;
|
---|
836 |
|
---|
837 | const int start_i=0;
|
---|
838 | const int end_i = metainfo.values.size()-1;
|
---|
839 |
|
---|
840 | if (position == -1) { // all
|
---|
841 | for (int i=start_i; i<=end_i; ++i) {
|
---|
842 | if (!first) tmp += meta.siblingoptions;
|
---|
843 | if (meta.metacommand & mSpecial) {
|
---|
844 | // special formatting
|
---|
845 | if (no_ns_metaname == "Date") tmp += format_date (metainfo.values[i]);
|
---|
846 | else if (no_ns_metaname == "Language") tmp += iso639(metainfo.values[i]);
|
---|
847 | else tmp += "_format:"+meta.metaname+"_("+metainfo.values[i]+")";
|
---|
848 | }
|
---|
849 | else tmp += metainfo.values[i];
|
---|
850 | first = false;
|
---|
851 |
|
---|
852 | }
|
---|
853 | } else {
|
---|
854 | if (position == -2) { // end
|
---|
855 | position = end_i;
|
---|
856 | } else if (position < start_i || position > end_i) {
|
---|
857 | return "";
|
---|
858 | }
|
---|
859 | if (meta.metacommand & mSpecial) {
|
---|
860 | // special formatting
|
---|
861 | if (no_ns_metaname == "Date") tmp += format_date (metainfo.values[position]);
|
---|
862 | else if (no_ns_metaname == "Language") tmp += iso639(metainfo.values[position]);
|
---|
863 | else tmp += "_format:"+meta.metaname+"_("+metainfo.values[position]+")";
|
---|
864 | }
|
---|
865 | else tmp += metainfo.values[position];
|
---|
866 | }
|
---|
867 | if (meta.metacommand & mCgiSafe && !no_cgisafe) return cgi_safe_unicode (tmp);
|
---|
868 | else return tmp;
|
---|
869 | }
|
---|
870 |
|
---|
871 | static text_t get_parent_meta (ResultDocInfo_t &docinfo, const metadata_t &meta, int siblings_values)
|
---|
872 | {
|
---|
873 |
|
---|
874 | MetadataInfo_t *parent = docinfo.metadata[meta.metaname].parent;
|
---|
875 | switch (meta.mqualifier.parent) {
|
---|
876 | case pNone:
|
---|
877 | return "Nothing!!";
|
---|
878 | break;
|
---|
879 |
|
---|
880 | case pImmediate:
|
---|
881 | if (parent != NULL) {
|
---|
882 | return get_formatted_meta_text(*parent, meta, siblings_values);
|
---|
883 | }
|
---|
884 | break;
|
---|
885 |
|
---|
886 | case pTop:
|
---|
887 | if (parent != NULL) {
|
---|
888 | while (parent->parent != NULL) parent = parent->parent;
|
---|
889 | return get_formatted_meta_text(*parent, meta, siblings_values);
|
---|
890 | }
|
---|
891 | break;
|
---|
892 |
|
---|
893 | case pAll:
|
---|
894 | MetadataInfo_t *parent = docinfo.metadata[meta.metaname].parent;
|
---|
895 | if (parent != NULL) {
|
---|
896 | text_tarray tmparray;
|
---|
897 | while (parent != NULL) {
|
---|
898 | tmparray.push_back (get_formatted_meta_text(*parent, meta, siblings_values, true)); // set no_cgisafe to true, as we'll do it once we have all the metadata
|
---|
899 | parent = parent->parent;
|
---|
900 | }
|
---|
901 | // now join them up - use teh parent separator
|
---|
902 | bool first = true;
|
---|
903 | text_t tmp;
|
---|
904 | text_tarray::reverse_iterator here = tmparray.rbegin();
|
---|
905 | text_tarray::reverse_iterator end = tmparray.rend();
|
---|
906 | while (here != end) {
|
---|
907 | if (!first) tmp += meta.parentoptions;
|
---|
908 | tmp += *here;
|
---|
909 | first = false;
|
---|
910 | ++here;
|
---|
911 | }
|
---|
912 | if (meta.metacommand & mCgiSafe) return cgi_safe_unicode (tmp);
|
---|
913 | else return tmp;
|
---|
914 | }
|
---|
915 | }
|
---|
916 | return "";
|
---|
917 |
|
---|
918 | }
|
---|
919 |
|
---|
920 | static text_t get_child_meta (const text_t& collection,
|
---|
921 | recptproto* collectproto,
|
---|
922 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
923 | const metadata_t &meta, text_tmap &options,
|
---|
924 | ostream& logout, int siblings_values)
|
---|
925 | {
|
---|
926 | if (docinfo.metadata["contains"].values[0].size()==0) return ""; // no children
|
---|
927 |
|
---|
928 | const text_t& child_metaname = meta.metaname;
|
---|
929 | const text_t& child_field = meta.childoptions;
|
---|
930 | text_tset child_metadata;
|
---|
931 | child_metadata.insert(child_metaname);
|
---|
932 |
|
---|
933 | FilterResponse_t child_response;
|
---|
934 | if (meta.mqualifier.child == cNum) {
|
---|
935 | // just one child
|
---|
936 | //get the information associated with the metadata for child doc
|
---|
937 | if (!get_info (docinfo.OID+child_field, collection, "", child_metadata,
|
---|
938 | false, collectproto, child_response, logout)) return ""; // invalid child number
|
---|
939 |
|
---|
940 | if (child_response.docInfo.empty()) return false; // no info for the child
|
---|
941 |
|
---|
942 | ResultDocInfo_t& child_docinfo = child_response.docInfo[0];
|
---|
943 | MetadataInfo_t& metaname_rec = child_docinfo.metadata[child_metaname];
|
---|
944 |
|
---|
945 | text_t child_metavalue = get_formatted_meta_text(metaname_rec,meta,siblings_values);
|
---|
946 | return expand_metadata(child_metavalue,collection,collectproto,
|
---|
947 | child_docinfo,disp,options,logout);
|
---|
948 | }
|
---|
949 |
|
---|
950 |
|
---|
951 | if (meta.mqualifier.child != cAll) return false; // invalid qualifier
|
---|
952 |
|
---|
953 | // we need to get all children
|
---|
954 | text_t result = "";
|
---|
955 | text_tarray children;
|
---|
956 | text_t contains = docinfo.metadata["contains"].values[0];
|
---|
957 | splitchar (contains.begin(), contains.end(), ';', children);
|
---|
958 | text_tarray::const_iterator here = children.begin();
|
---|
959 | text_tarray::const_iterator end = children.end();
|
---|
960 | bool first = true;
|
---|
961 | while (here !=end) {
|
---|
962 | text_t oid = *here;
|
---|
963 | here++;
|
---|
964 | if (*(oid.begin()) == '"') translate_parent (oid, docinfo.OID);
|
---|
965 |
|
---|
966 |
|
---|
967 | //get the information associated with the metadata for child doc
|
---|
968 | if (!get_info (oid, collection, "", child_metadata,
|
---|
969 | false, collectproto, child_response, logout) ||
|
---|
970 | child_response.docInfo.empty()) {
|
---|
971 | first = false;
|
---|
972 | continue;
|
---|
973 | }
|
---|
974 |
|
---|
975 |
|
---|
976 | ResultDocInfo_t& child_docinfo = child_response.docInfo[0];
|
---|
977 | MetadataInfo_t& metaname_rec = child_docinfo.metadata[child_metaname];
|
---|
978 |
|
---|
979 | text_t child_metavalue = get_formatted_meta_text(metaname_rec,meta,siblings_values);
|
---|
980 | if (!first) result += child_field;
|
---|
981 | first = false;
|
---|
982 | // need to do this here cos otherwise we are in the wrong document
|
---|
983 | result += expand_metadata(child_metavalue,collection,collectproto,
|
---|
984 | child_docinfo,disp,options,logout);
|
---|
985 | }
|
---|
986 | return result;
|
---|
987 |
|
---|
988 | }
|
---|
989 |
|
---|
990 | static text_t get_meta (const text_t& collection, recptproto* collectproto,
|
---|
991 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
992 | const metadata_t &meta, text_tmap &options,
|
---|
993 | ostream& logout) {
|
---|
994 |
|
---|
995 | // make sure we have the requested metadata
|
---|
996 | MetadataInfo_tmap::iterator it = docinfo.metadata.find (meta.metaname);
|
---|
997 | if (it == docinfo.metadata.end()) return "";
|
---|
998 |
|
---|
999 | int siblings_values = 0; // default is no siblings, just the first metadata available
|
---|
1000 | if (meta.metacommand & mSibling) {
|
---|
1001 | if (meta.mqualifier.sibling == sAll) {
|
---|
1002 | siblings_values = -1; //all
|
---|
1003 | } else if (meta.mqualifier.sibling == sNum) {
|
---|
1004 | siblings_values = meta.siblingoptions.getint();
|
---|
1005 | }
|
---|
1006 | }
|
---|
1007 | if (meta.metacommand & mParent) {
|
---|
1008 | return get_parent_meta(docinfo,meta,siblings_values);
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 | else if (meta.metacommand & mChild) {
|
---|
1012 | return get_child_meta(collection,collectproto,docinfo,disp,meta,
|
---|
1013 | options,logout, siblings_values);
|
---|
1014 | }
|
---|
1015 | else if (meta.metacommand & mSibling) { // only siblings
|
---|
1016 | MetadataInfo_t& metaname_rec = docinfo.metadata[meta.metaname];
|
---|
1017 | return get_formatted_meta_text(docinfo.metadata[meta.metaname],meta, siblings_values);
|
---|
1018 | }
|
---|
1019 | else {
|
---|
1020 |
|
---|
1021 | // straightforward metadata request (nothing fancy)
|
---|
1022 |
|
---|
1023 | text_t classifier_metaname = docinfo.classifier_metadata_type;
|
---|
1024 | int metaname_index
|
---|
1025 | = (classifier_metaname == meta.metaname) ? docinfo.classifier_metadata_offset : 0;
|
---|
1026 | return get_formatted_meta_text(docinfo.metadata[meta.metaname], meta, metaname_index);
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | return "";
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | static text_t get_or (const text_t& collection, recptproto* collectproto,
|
---|
1033 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1034 | format_t *orptr, text_tmap &options,
|
---|
1035 | ostream& logout) {
|
---|
1036 |
|
---|
1037 | text_t tmp;
|
---|
1038 | while (orptr != NULL) {
|
---|
1039 |
|
---|
1040 | tmp = format_string (collection,collectproto,docinfo, disp, orptr,
|
---|
1041 | options, logout);
|
---|
1042 | if (!tmp.empty()) return tmp;
|
---|
1043 |
|
---|
1044 | orptr = orptr->nextptr;
|
---|
1045 | }
|
---|
1046 | return "";
|
---|
1047 | }
|
---|
1048 |
|
---|
1049 | static bool char_is_whitespace(const char c)
|
---|
1050 | {
|
---|
1051 | return ((c == ' ') || (c == '\t') || (c == '\n') || (c == '\r'));
|
---|
1052 |
|
---|
1053 | }
|
---|
1054 |
|
---|
1055 | static int scan_over_whitespace(const text_t& outstring, const int start_pos)
|
---|
1056 | {
|
---|
1057 | int pos = start_pos;
|
---|
1058 | while (pos<outstring.size()) {
|
---|
1059 | if (!char_is_whitespace(outstring[pos])) {
|
---|
1060 | break;
|
---|
1061 | }
|
---|
1062 | ++pos;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 | return pos;
|
---|
1066 | }
|
---|
1067 |
|
---|
1068 | static int rscan_over_whitespace(const text_t& outstring, const int start_pos)
|
---|
1069 | {
|
---|
1070 | int pos = start_pos;
|
---|
1071 | while (pos>=0) {
|
---|
1072 | if (!char_is_whitespace(outstring[pos])) {
|
---|
1073 | break;
|
---|
1074 | }
|
---|
1075 | --pos;
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 | return pos;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | static int rscan_for_whitespace(const text_t& outstring, const int start_pos)
|
---|
1082 | {
|
---|
1083 | int pos = start_pos;
|
---|
1084 | while (pos>=0) {
|
---|
1085 | if (char_is_whitespace(outstring[pos])) {
|
---|
1086 | break;
|
---|
1087 | }
|
---|
1088 | --pos;
|
---|
1089 | }
|
---|
1090 |
|
---|
1091 | return pos;
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 |
|
---|
1095 | static int rscan_for(const text_t& outstring, const int start_pos,
|
---|
1096 | const char find_c)
|
---|
1097 | {
|
---|
1098 | int pos = start_pos;
|
---|
1099 | while (pos>=0) {
|
---|
1100 | char c = outstring[pos];
|
---|
1101 | if (outstring[pos] == find_c) {
|
---|
1102 | break;
|
---|
1103 | }
|
---|
1104 | --pos;
|
---|
1105 | }
|
---|
1106 |
|
---|
1107 | return pos;
|
---|
1108 | }
|
---|
1109 |
|
---|
1110 | text_t extract_substr(const text_t& outstring, const int start_pos,
|
---|
1111 | const int end_pos)
|
---|
1112 | {
|
---|
1113 | text_t extracted_str;
|
---|
1114 | extracted_str.clear();
|
---|
1115 |
|
---|
1116 | for (int pos=start_pos; pos<=end_pos; ++pos) {
|
---|
1117 | extracted_str.push_back(outstring[pos]);
|
---|
1118 | }
|
---|
1119 |
|
---|
1120 | return extracted_str;
|
---|
1121 | }
|
---|
1122 |
|
---|
1123 |
|
---|
1124 | static text_t expand_potential_metadata(const text_t& collection,
|
---|
1125 | recptproto* collectproto,
|
---|
1126 | ResultDocInfo_t &docinfo,
|
---|
1127 | displayclass &disp,
|
---|
1128 | const text_t& intext,
|
---|
1129 | text_tmap &options,
|
---|
1130 | ostream& logout)
|
---|
1131 | {
|
---|
1132 | text_t outtext;
|
---|
1133 |
|
---|
1134 | // decide if dealing with metadata or text
|
---|
1135 |
|
---|
1136 | text_t::const_iterator beginbracket = intext.begin();
|
---|
1137 | text_t::const_iterator endbracket = (intext.end() - 1);
|
---|
1138 |
|
---|
1139 | // Decision is based on a metadata element
|
---|
1140 | if ((*beginbracket == '[') && (*endbracket == ']')) {
|
---|
1141 | // Ignore the surrounding square brackets
|
---|
1142 | text_t meta_text = substr (beginbracket+1, endbracket);
|
---|
1143 |
|
---|
1144 | if (meta_text == "Text") {
|
---|
1145 | outtext = format_text(collection, collectproto, docinfo, disp, options, logout);
|
---|
1146 | } else {
|
---|
1147 |
|
---|
1148 | text_tset metadata;
|
---|
1149 | bool getParents =false;
|
---|
1150 | metadata_t meta;
|
---|
1151 |
|
---|
1152 | parse_meta (meta_text, meta, metadata, getParents);
|
---|
1153 | outtext
|
---|
1154 | = get_meta (collection,collectproto,docinfo,disp,meta,options,logout);
|
---|
1155 | }
|
---|
1156 |
|
---|
1157 | }
|
---|
1158 | else {
|
---|
1159 | outtext = intext;
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | return outtext;
|
---|
1163 | }
|
---|
1164 |
|
---|
1165 |
|
---|
1166 |
|
---|
1167 |
|
---|
1168 | static bool uses_expression(const text_t& collection, recptproto* collectproto,
|
---|
1169 | ResultDocInfo_t &docinfo,
|
---|
1170 | displayclass &disp,
|
---|
1171 | const text_t& outstring, text_t& lhs_expr,
|
---|
1172 | text_t& op_expr, text_t& rhs_expr,
|
---|
1173 | text_tmap &options,
|
---|
1174 | ostream& logout)
|
---|
1175 | {
|
---|
1176 | // Note: the string may not be of the form: str1 op str2, however
|
---|
1177 | // to deterine this we have to process it on the assumption it is,
|
---|
1178 | // and if at any point an 'erroneous' value is encountered, return
|
---|
1179 | // false and let something else have a go at evaluating it
|
---|
1180 |
|
---|
1181 | // Starting at the end of the string and working backwards ..
|
---|
1182 |
|
---|
1183 | const int outstring_len = outstring.size();
|
---|
1184 |
|
---|
1185 | // skip over white space
|
---|
1186 | int rhs_end = rscan_over_whitespace(outstring,outstring_len-1);
|
---|
1187 |
|
---|
1188 | if (rhs_end<=0) {
|
---|
1189 | // no meaningful text or (rhs_end==0) no room for operator
|
---|
1190 | return false;
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 | // check for ' or " and then scan over token
|
---|
1194 | const char potential_quote = outstring[rhs_end];
|
---|
1195 | int rhs_start=rhs_end;
|
---|
1196 | bool quoted = false;
|
---|
1197 |
|
---|
1198 | if ((potential_quote == '\'') || (potential_quote == '\"')) {
|
---|
1199 | --rhs_end;
|
---|
1200 | rhs_start = rscan_for(outstring,rhs_end-1,potential_quote) +1;
|
---|
1201 | quoted = true;
|
---|
1202 | }
|
---|
1203 | else {
|
---|
1204 | rhs_start = rscan_for_whitespace(outstring,rhs_end-1) +1;
|
---|
1205 | }
|
---|
1206 |
|
---|
1207 | if ((rhs_end-rhs_start)<0) {
|
---|
1208 | // no meaningful rhs expression
|
---|
1209 | return false;
|
---|
1210 | }
|
---|
1211 |
|
---|
1212 | // form rhs_expr
|
---|
1213 | rhs_expr = extract_substr(outstring,rhs_start,rhs_end);
|
---|
1214 |
|
---|
1215 | // skip over white space
|
---|
1216 | const int to_whitespace = (quoted) ? 2 : 1;
|
---|
1217 |
|
---|
1218 | int op_end = rscan_over_whitespace(outstring,rhs_start-to_whitespace);
|
---|
1219 | int op_start = rscan_for_whitespace(outstring,op_end-1)+1;
|
---|
1220 |
|
---|
1221 |
|
---|
1222 | if (op_end-op_start<0) {
|
---|
1223 | // no meaningful expression operator
|
---|
1224 | return false;
|
---|
1225 | }
|
---|
1226 |
|
---|
1227 | op_expr = extract_substr(outstring,op_start,op_end);
|
---|
1228 |
|
---|
1229 |
|
---|
1230 | // check for operator
|
---|
1231 | if ((op_expr != "eq") && (op_expr != "ne") && (op_expr != "gt") &&
|
---|
1232 | (op_expr != "ge") && (op_expr != "lt") && (op_expr != "le") && (op_expr != "==") && (op_expr != "!=") && (op_expr != ">") && (op_expr != ">=") && (op_expr != "<") && (op_expr != "<=") && (op_expr != "sw") && (op_expr != "ew")) {
|
---|
1233 |
|
---|
1234 | // not a valid operator
|
---|
1235 | return false;
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | int lhs_end = rscan_over_whitespace(outstring,op_start-1);
|
---|
1239 | if (lhs_end<0) {
|
---|
1240 | // no meaningful lhs expression
|
---|
1241 | return false;
|
---|
1242 | }
|
---|
1243 |
|
---|
1244 | int lhs_start = scan_over_whitespace(outstring,0);
|
---|
1245 |
|
---|
1246 | // form lhs_expr from remainder of string
|
---|
1247 | lhs_expr = extract_substr(outstring,lhs_start,lhs_end);
|
---|
1248 |
|
---|
1249 | // Now we know we have a valid expression, look up any
|
---|
1250 | // metadata terms
|
---|
1251 |
|
---|
1252 | rhs_expr = expand_potential_metadata(collection,collectproto,docinfo,
|
---|
1253 | disp,rhs_expr,options,logout);
|
---|
1254 | lhs_expr = expand_potential_metadata(collection,collectproto,docinfo,
|
---|
1255 | disp,lhs_expr,options,logout);
|
---|
1256 |
|
---|
1257 | return true;
|
---|
1258 | }
|
---|
1259 |
|
---|
1260 | static bool eval_expression_true(const text_t& lhs_expr,const text_t& op_expr,
|
---|
1261 | const text_t& rhs_expr, ostream& logout)
|
---|
1262 | {
|
---|
1263 | if (op_expr == "eq") return (lhs_expr == rhs_expr);
|
---|
1264 | else if (op_expr == "ne" ) return (lhs_expr != rhs_expr);
|
---|
1265 | else if (op_expr == "gt") return (lhs_expr > rhs_expr);
|
---|
1266 | else if (op_expr == "ge") return (lhs_expr >= rhs_expr);
|
---|
1267 | else if (op_expr == "lt") return (lhs_expr < rhs_expr);
|
---|
1268 | else if (op_expr == "le") return (lhs_expr <= rhs_expr);
|
---|
1269 | else if (op_expr == "==") return (lhs_expr.getint() == rhs_expr.getint());
|
---|
1270 | else if (op_expr == "!=") return (lhs_expr.getint() != rhs_expr.getint());
|
---|
1271 | else if (op_expr == ">") return (lhs_expr.getint() > rhs_expr.getint());
|
---|
1272 | else if (op_expr == ">=") return (lhs_expr.getint() >= rhs_expr.getint());
|
---|
1273 | else if (op_expr == "<") return (lhs_expr.getint() < rhs_expr.getint());
|
---|
1274 | else if (op_expr == "<=") return (lhs_expr.getint() <= rhs_expr.getint());
|
---|
1275 | else if (op_expr == "sw") return (starts_with(lhs_expr,rhs_expr));
|
---|
1276 | else if (op_expr == "ew") return (ends_with(lhs_expr,rhs_expr));
|
---|
1277 | else {
|
---|
1278 | logout << "Error: '" << op_expr << "' is not a recognised operator." << endl;
|
---|
1279 | }
|
---|
1280 |
|
---|
1281 | return false;
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 |
|
---|
1285 | static text_t get_if (const text_t& collection, recptproto* collectproto,
|
---|
1286 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1287 | const decision_t &decision,
|
---|
1288 | format_t *ifptr, format_t *elseptr,
|
---|
1289 | text_tmap &options, ostream& logout)
|
---|
1290 | {
|
---|
1291 | // If the decision component is a metadata element, then evaluate it
|
---|
1292 | // to see whether we output the "then" or the "else" clause
|
---|
1293 | if (decision.command == dMeta) {
|
---|
1294 | if (get_meta (collection,collectproto,docinfo,disp,decision.meta,options,
|
---|
1295 | logout) != "") {
|
---|
1296 | if (ifptr != NULL)
|
---|
1297 | return get_formatted_string (collection,collectproto,docinfo, disp, ifptr,
|
---|
1298 | options, logout);
|
---|
1299 | }
|
---|
1300 | else {
|
---|
1301 | if (elseptr != NULL)
|
---|
1302 | return get_formatted_string (collection,collectproto,docinfo, disp, elseptr,
|
---|
1303 | options, logout);
|
---|
1304 | }
|
---|
1305 | }
|
---|
1306 |
|
---|
1307 | // If the decision component is text, then evaluate it (it is probably a
|
---|
1308 | // macro like _cgiargmode_) to decide what to output.
|
---|
1309 | else if (decision.command == dText) {
|
---|
1310 |
|
---|
1311 | text_t outstring;
|
---|
1312 | disp.expandstring (decision.text, outstring);
|
---|
1313 |
|
---|
1314 | // Check for if expression in form: str1 op str2
|
---|
1315 | // (such as [x] eq "y")
|
---|
1316 | text_t lhs_expr, op_expr, rhs_expr;
|
---|
1317 | if (uses_expression(collection,collectproto,docinfo, disp, outstring,lhs_expr,op_expr,rhs_expr, options,logout)) {
|
---|
1318 | if (eval_expression_true(lhs_expr,op_expr,rhs_expr,logout)) {
|
---|
1319 | if (ifptr != NULL) {
|
---|
1320 | return get_formatted_string (collection, collectproto, docinfo, disp, ifptr,
|
---|
1321 | options, logout);
|
---|
1322 | }
|
---|
1323 | else {
|
---|
1324 | return "";
|
---|
1325 | }
|
---|
1326 | } else {
|
---|
1327 | if (elseptr != NULL) {
|
---|
1328 | return get_formatted_string (collection, collectproto, docinfo, disp, elseptr,
|
---|
1329 | options, logout);
|
---|
1330 | }
|
---|
1331 | else {
|
---|
1332 | return "";
|
---|
1333 | }
|
---|
1334 | }
|
---|
1335 | }
|
---|
1336 |
|
---|
1337 |
|
---|
1338 | // This is a tad tricky. When we expand a string like _cgiargmode_, that is
|
---|
1339 | // a cgi argument macro that has not been set, it evaluates to itself.
|
---|
1340 | // Therefore, were have to say that a piece of text evalautes true if
|
---|
1341 | // it is non-empty and if it is a cgi argument evaulating to itself.
|
---|
1342 |
|
---|
1343 | if ((outstring != "") && !((outstring == decision.text) && (outstring[0] == '_'))) {
|
---|
1344 | if (ifptr != NULL)
|
---|
1345 | return get_formatted_string (collection, collectproto, docinfo, disp, ifptr,
|
---|
1346 | options, logout);
|
---|
1347 | } else {
|
---|
1348 | if (elseptr != NULL)
|
---|
1349 | return get_formatted_string (collection, collectproto, docinfo, disp, elseptr,
|
---|
1350 | options, logout);
|
---|
1351 | }
|
---|
1352 | }
|
---|
1353 |
|
---|
1354 | return "";
|
---|
1355 | }
|
---|
1356 |
|
---|
1357 | bool includes_metadata(const text_t& text)
|
---|
1358 | {
|
---|
1359 | text_t::const_iterator here = text.begin();
|
---|
1360 | text_t::const_iterator end = text.end();
|
---|
1361 | while (here != end) {
|
---|
1362 | if (*here == '[') return true;
|
---|
1363 | ++here;
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 | return false;
|
---|
1367 | }
|
---|
1368 |
|
---|
1369 | static text_t expand_metadata(const text_t &metavalue, const text_t& collection,
|
---|
1370 | recptproto* collectproto,
|
---|
1371 | ResultDocInfo_t &docinfo,
|
---|
1372 | displayclass &disp, text_tmap &options,
|
---|
1373 | ostream &logout) {
|
---|
1374 |
|
---|
1375 | if (includes_metadata(metavalue)) {
|
---|
1376 |
|
---|
1377 | // text has embedded metadata in it => expand it
|
---|
1378 | FilterRequest_t request;
|
---|
1379 | FilterResponse_t response;
|
---|
1380 |
|
---|
1381 | request.getParents = false;
|
---|
1382 |
|
---|
1383 | format_t *expanded_formatlistptr = new format_t();
|
---|
1384 | parse_formatstring (metavalue, expanded_formatlistptr,
|
---|
1385 | request.fields, request.getParents);
|
---|
1386 |
|
---|
1387 | // retrieve metadata
|
---|
1388 | get_info(docinfo.OID, collection, "", request.fields, request.getParents,
|
---|
1389 | collectproto, response, logout);
|
---|
1390 |
|
---|
1391 | if (!response.docInfo.empty()) {
|
---|
1392 |
|
---|
1393 | text_t expanded_metavalue
|
---|
1394 | = get_formatted_string(collection, collectproto,
|
---|
1395 | response.docInfo[0], disp, expanded_formatlistptr,
|
---|
1396 | options, logout);
|
---|
1397 |
|
---|
1398 | return expanded_metavalue;
|
---|
1399 | }
|
---|
1400 | else {
|
---|
1401 | return metavalue;
|
---|
1402 | }
|
---|
1403 | }
|
---|
1404 | else {
|
---|
1405 |
|
---|
1406 | return metavalue;
|
---|
1407 | }
|
---|
1408 | }
|
---|
1409 |
|
---|
1410 | text_t get_collection_meta(const text_t& collection, recptproto* collectproto,
|
---|
1411 | displayclass &disp,
|
---|
1412 | text_t meta_name, ostream& logout) {
|
---|
1413 |
|
---|
1414 | ColInfoResponse_t collectinfo;
|
---|
1415 | comerror_t err;
|
---|
1416 | collectproto->get_collectinfo (collection, collectinfo,err,logout);
|
---|
1417 | text_t meta_value = "";
|
---|
1418 | text_t lang;
|
---|
1419 | disp.expandstring("_cgiargl_",lang);
|
---|
1420 | if (lang.empty()) {
|
---|
1421 | lang = "en";
|
---|
1422 | }
|
---|
1423 |
|
---|
1424 | if (err == noError) {
|
---|
1425 | meta_value = collectinfo.get_collectionmeta(meta_name, lang);
|
---|
1426 | }
|
---|
1427 | return meta_value;
|
---|
1428 |
|
---|
1429 |
|
---|
1430 | }
|
---|
1431 | text_t format_string (const text_t& collection, recptproto* collectproto,
|
---|
1432 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1433 | format_t *formatlistptr, text_tmap &options,
|
---|
1434 | ostream& logout) {
|
---|
1435 |
|
---|
1436 | if (formatlistptr == NULL) return "";
|
---|
1437 |
|
---|
1438 | switch (formatlistptr->command) {
|
---|
1439 | case comOID:
|
---|
1440 | return docinfo.OID;
|
---|
1441 | case comTopOID:
|
---|
1442 | {
|
---|
1443 | text_t top_id;
|
---|
1444 | get_top(docinfo.OID, top_id);
|
---|
1445 | return top_id;
|
---|
1446 | }
|
---|
1447 | case comRank:
|
---|
1448 | return text_t(docinfo.ranking);
|
---|
1449 | case comText:
|
---|
1450 | return formatlistptr->text;
|
---|
1451 | case comLink:
|
---|
1452 | return options["link"];
|
---|
1453 | case comEndLink:
|
---|
1454 | if (options["link"].empty()) return "";
|
---|
1455 | else return "</a>";
|
---|
1456 | case comHref:
|
---|
1457 | return get_href(options["link"]);
|
---|
1458 | case comIcon:
|
---|
1459 | return options["icon"];
|
---|
1460 | case comNum:
|
---|
1461 | return docinfo.result_num;
|
---|
1462 | case comRel: //if [RelatedDocuments] appears in format string, collect relation data
|
---|
1463 | return get_related_docs(collection, collectproto, docinfo, logout);
|
---|
1464 | case comSummary:
|
---|
1465 | return format_summary(collection, collectproto, docinfo, disp, options, logout);
|
---|
1466 | case comMeta:
|
---|
1467 | {
|
---|
1468 | const text_t& metavalue = get_meta (collection,collectproto, docinfo, disp,formatlistptr->meta,options,logout);
|
---|
1469 | return expand_metadata(metavalue, collection, collectproto, docinfo, disp, options, logout);
|
---|
1470 | }
|
---|
1471 | case comDoc:
|
---|
1472 | return format_text(collection, collectproto, docinfo, disp, options, logout);
|
---|
1473 | //return options["text"];
|
---|
1474 | case comImage:
|
---|
1475 | return expand_metadata(options["DocImage"], collection, collectproto, docinfo, disp, options, logout);
|
---|
1476 | case comTOC:
|
---|
1477 | return options["DocTOC"];
|
---|
1478 | case comDocumentButtonDetach:
|
---|
1479 | return options["DocumentButtonDetach"];
|
---|
1480 | case comDocumentButtonHighlight:
|
---|
1481 | return options["DocumentButtonHighlight"];
|
---|
1482 | case comDocumentButtonExpandContents:
|
---|
1483 | return options["DocumentButtonExpandContents"];
|
---|
1484 | case comDocumentButtonExpandText:
|
---|
1485 | return options["DocumentButtonExpandText"];
|
---|
1486 | case comHighlight:
|
---|
1487 | if (options["highlight"] == "1") return "<b>";
|
---|
1488 | break;
|
---|
1489 | case comEndHighlight:
|
---|
1490 | if (options["highlight"] == "1") return "</b>";
|
---|
1491 | break;
|
---|
1492 | case comIf:
|
---|
1493 | return get_if (collection, collectproto, docinfo, disp,
|
---|
1494 | formatlistptr->decision, formatlistptr->ifptr,
|
---|
1495 | formatlistptr->elseptr, options, logout);
|
---|
1496 | case comOr:
|
---|
1497 | return get_or (collection,collectproto, docinfo, disp, formatlistptr->orptr,
|
---|
1498 | options, logout);
|
---|
1499 | case comCollection:
|
---|
1500 | if (formatlistptr->meta.metaname == g_EmptyText) {
|
---|
1501 | return collection;
|
---|
1502 | }
|
---|
1503 | return get_collection_meta(collection, collectproto, disp, formatlistptr->meta.metaname, logout);
|
---|
1504 |
|
---|
1505 | }
|
---|
1506 | return "";
|
---|
1507 | }
|
---|
1508 |
|
---|
1509 | text_t get_formatted_string (const text_t& collection, recptproto* collectproto,
|
---|
1510 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1511 | format_t *formatlistptr, text_tmap &options,
|
---|
1512 | ostream& logout) {
|
---|
1513 |
|
---|
1514 | text_t ft;
|
---|
1515 | while (formatlistptr != NULL)
|
---|
1516 | {
|
---|
1517 | ft += format_string (collection, collectproto, docinfo, disp, formatlistptr,
|
---|
1518 | options, logout);
|
---|
1519 | formatlistptr = formatlistptr->nextptr;
|
---|
1520 | }
|
---|
1521 |
|
---|
1522 | return ft;
|
---|
1523 | }
|
---|
1524 |
|
---|
1525 |
|
---|
1526 | // we have only preloaded the text in DocumentAction. But you may want to get the text in query. so copy what we have done with format_summary and get the text here. probably is quite expensive?
|
---|
1527 | text_t format_text (const text_t& collection, recptproto* collectproto,
|
---|
1528 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1529 | text_tmap &options, ostream& logout) {
|
---|
1530 | if(!options["text"].empty()) {
|
---|
1531 | return options["text"];
|
---|
1532 | }
|
---|
1533 | // else get document text here
|
---|
1534 | DocumentRequest_t docrequest;
|
---|
1535 | DocumentResponse_t docresponse;
|
---|
1536 | comerror_t err;
|
---|
1537 | docrequest.OID = docinfo.OID;
|
---|
1538 | collectproto->get_document (collection, docrequest, docresponse, err, logout);
|
---|
1539 | return docresponse.doc;
|
---|
1540 |
|
---|
1541 | }
|
---|
1542 |
|
---|
1543 | /* FUNCTION NAME: format_summary
|
---|
1544 | * DESC: this is invoked when a [Summary] special metadata is processed.
|
---|
1545 | * RETURNS: a query-biased summary for the document */
|
---|
1546 |
|
---|
1547 | text_t format_summary (const text_t& collection, recptproto* collectproto,
|
---|
1548 | ResultDocInfo_t &docinfo, displayclass &disp,
|
---|
1549 | text_tmap &options, ostream& logout) {
|
---|
1550 |
|
---|
1551 | // GRB: added code here to ensure that the cstr (and other collections)
|
---|
1552 | // uses the document metadata item Summary, rather than compressing
|
---|
1553 | // the text of the document, processed via the methods in
|
---|
1554 | // summarise.cpp
|
---|
1555 | if (docinfo.metadata.count("Summary") > 0 &&
|
---|
1556 | docinfo.metadata["Summary"].values.size() > 0) {
|
---|
1557 | return docinfo.metadata["Summary"].values[0];
|
---|
1558 | }
|
---|
1559 |
|
---|
1560 | text_t textToSummarise, query;
|
---|
1561 | if(options["text"].empty()) { // get document text
|
---|
1562 | DocumentRequest_t docrequest;
|
---|
1563 | DocumentResponse_t docresponse;
|
---|
1564 | comerror_t err;
|
---|
1565 | docrequest.OID = docinfo.OID;
|
---|
1566 | collectproto->get_document (collection, docrequest, docresponse, err, logout);
|
---|
1567 | textToSummarise = docresponse.doc;
|
---|
1568 | } else // in practice, this would not happen, because text is only
|
---|
1569 | // loaded with the [Text] command
|
---|
1570 | textToSummarise = options["text"];
|
---|
1571 | disp.expandstring("_cgiargq_",query);
|
---|
1572 | return summarise(textToSummarise,query,80);
|
---|
1573 | }
|
---|