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 | * $Id: formattools.cpp 636 1999-09-28 20:38:19Z rjmcnab $
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25 | *
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26 | *********************************************************************/
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27 |
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28 | /*
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29 | $Log$
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30 | Revision 1.11 1999/09/28 20:38:19 rjmcnab
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31 | fixed a couple of bugs
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32 |
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33 | Revision 1.10 1999/09/07 04:56:55 sjboddie
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34 | added GPL notice
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35 |
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36 | Revision 1.9 1999/09/02 00:31:25 rjmcnab
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37 | fixed small error.
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38 |
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39 | Revision 1.8 1999/08/20 00:56:38 sjboddie
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40 | added cgisafe option - you can now do something like [cgisafe:Title] if
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41 | you want Title to be entered safely into a url
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42 |
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43 | Revision 1.7 1999/08/10 22:38:08 sjboddie
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44 | added some more format options
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45 |
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46 | Revision 1.6 1999/07/30 02:25:42 sjboddie
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47 | made format_date function global
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48 |
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49 | Revision 1.5 1999/07/21 05:00:00 sjboddie
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50 | added some date formatting
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51 |
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52 | Revision 1.4 1999/07/20 03:02:15 sjboddie
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53 | added an [icon] option, added ability to call get_formatted_string
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54 | with icon and link arguments set
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55 |
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56 | Revision 1.3 1999/07/09 02:44:35 sjboddie
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57 | fixed parent(All) function so it only outputs parents and not current
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58 | level meta
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59 |
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60 | Revision 1.2 1999/07/08 20:48:33 rjmcnab
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61 | Added ability to print the result number
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62 |
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63 | Revision 1.1 1999/07/07 05:49:34 sjboddie
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64 | had another crack at the format string code - created a new formattools
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65 | module. It can now handle {If} and {Or} statements although there's a
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66 | bug preventing nested if's and or's.
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67 |
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68 | */
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69 |
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70 |
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71 | #include "formattools.h"
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72 | #include "cgiutils.h"
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73 |
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74 | // a few function prototypes
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75 | static text_t format_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr,
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76 | const text_t &link, const text_t &icon, const text_t &text);
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77 |
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78 | static bool parse_action (text_t::const_iterator &here, const text_t::const_iterator &end,
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79 | format_t *formatlistptr, text_tarray &metadata, bool &getParents,
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80 | text_tmap &metamap, int &metacount);
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81 |
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82 | void metadata_t::clear() {
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83 | metaname.clear();
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84 | metaindex = 0;
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85 | metacommand = mNone;
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86 | parentcommand = pNone;
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87 | parentindex = 0;
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88 | parentoptions.clear();
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89 | };
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90 |
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91 | void decision_t::clear() {
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92 | command = dMeta;
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93 | meta.clear();
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94 | };
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95 |
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96 | void format_t::clear() {
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97 | command = comText;
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98 | decision.clear();
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99 | text.clear();
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100 | meta.clear();
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101 | nextptr = NULL;
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102 | ifptr = NULL;
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103 | elseptr = NULL;
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104 | orptr = NULL;
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105 | };
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106 |
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107 | void formatinfo_t::clear() {
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108 | DocumentImages = false;
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109 | // note that DocumentTopPages is used in receptionist when translating
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110 | // OIDs. changing the default here may require changing it there too.
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111 | DocumentTopPages = true;
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112 | DocumentHeading = "{Or}{[parent(Top):Title],[Title],untitled}";
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113 | DocumentArrowsTop = true;
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114 | DocumentArrowsBottom = true;
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115 | DocumentGoTo = true;
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116 | DocumentButtons.erase (DocumentButtons.begin(), DocumentButtons.end());
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117 | DocumentButtons.push_back ("Detach");
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118 | DocumentButtons.push_back ("Highlight");
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119 | DocumentButtons.push_back ("Expand Text");
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120 | DocumentButtons.push_back ("Expand Contents");
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121 | DocumentText = "[Text]";
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122 | }
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123 |
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124 |
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125 | // returns a date of form _textmonthnn_ 31, 1999
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126 | // input is date of type 19991231
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127 | // at least the year must be present in date
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128 | text_t format_date (const text_t &date) {
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129 |
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130 | if (date.size() < 4) return "";
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131 |
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132 | text_t::const_iterator datebegin = date.begin();
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133 |
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134 | text_t year = substr (datebegin, datebegin+4);
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135 |
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136 | if (date.size() < 6) return year;
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137 |
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138 | text_t month = "_textmonth" + substr (datebegin+4, datebegin+6) + "_";
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139 | int imonth = month.getint();
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140 | if (imonth < 0 || imonth > 12) return year;
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141 |
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142 | if (date.size() < 8) return month + ", " + year;
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143 |
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144 | text_t day = substr (datebegin+6, datebegin+8);
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145 | if (day[0] == '0') day = substr (day.begin()+1, day.end());
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146 | int iday = day.getint();
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147 | if (iday < 0 || iday > 31) return month + ", " + year;
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148 |
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149 | return month + " " + day + ", " + year;
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150 | }
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151 |
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152 | static void get_parent_options (text_t &instring, metadata_t &metaoption) {
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153 |
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154 | metaoption.clear();
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155 | text_t meta, com, op;
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156 | bool inbraces = false;
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157 | bool inquotes = false;
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158 | bool foundcolon = false;
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159 | text_t::const_iterator here = instring.begin()+6;
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160 | text_t::const_iterator end = instring.end();
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161 | while (here != end) {
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162 | if (*here == '(') inbraces = true;
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163 | else if (*here == ')') inbraces = false;
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164 | else if (*here == '\'' && !inquotes) inquotes = true;
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165 | else if (*here == '\'' && inquotes) inquotes = false;
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166 | else if (*here == ':' && !inbraces) foundcolon = true;
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167 | else if (foundcolon) meta.push_back (*here);
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168 | else if (inquotes) op.push_back (*here);
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169 | else com.push_back (*here);
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170 | here ++;
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171 | }
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172 | instring = meta;
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173 | if (com.empty())
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174 | metaoption.parentcommand = pImmediate;
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175 | else if (com == "Top")
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176 | metaoption.parentcommand = pTop;
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177 | else if (is_number(com)) {
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178 | metaoption.parentcommand = pIndex;
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179 | metaoption.metaindex = com.getint();
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180 | } else if (com == "All") {
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181 | metaoption.parentcommand = pAll;
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182 | metaoption.parentoptions = op;
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183 | }
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184 | }
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185 |
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186 | static bool parse_meta (text_t &meta, int &count, decision_t &decision,
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187 | text_tarray &metadata, bool &getParents, text_tmap &metamap) {
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188 |
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189 | if (meta.size() > 7 && (substr (meta.begin(), meta.begin()+6) == "parent")) {
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190 | getParents = true;
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191 | metadata_t metaoption;
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192 | get_parent_options (meta, metaoption);
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193 | decision.meta = metaoption;
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194 | }
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195 | text_tmap::const_iterator it;
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196 | if ((it = metamap.find(meta)) != metamap.end()) {
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197 | decision.meta.metaindex = (*it).second.getint();
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198 | } else {
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199 | metamap[meta] = count;
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200 | metadata.push_back (meta);
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201 | decision.meta.metaindex = count;
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202 | count ++;
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203 | }
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204 | return true;
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205 | }
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206 |
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207 | static bool parse_meta (text_t &meta, int &count, format_t *formatlistptr,
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208 | text_tarray &metadata, bool &getParents, text_tmap &metamap) {
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209 |
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210 | if (meta == "link")
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211 | formatlistptr->command = comLink;
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212 | else if (meta == "/link")
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213 | formatlistptr->command = comEndLink;
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214 |
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215 | else if (meta == "num")
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216 | formatlistptr->command = comNum;
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217 |
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218 | else if (meta == "icon")
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219 | formatlistptr->command = comIcon;
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220 |
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221 | else if (meta == "Text")
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222 | formatlistptr->command = comDoc;
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223 |
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224 | else {
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225 | formatlistptr->command = comMeta;
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226 |
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227 | if (meta.size() > 8 && (substr(meta.begin(), meta.begin()+8) == "cgisafe:")) {
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228 | formatlistptr->meta.metacommand = mCgiSafe;
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229 | meta = substr (meta.begin()+8, meta.end());
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230 | }
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231 |
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232 | if (meta.size() > 7 && (substr (meta.begin(), meta.begin()+6) == "parent")) {
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233 | getParents = true;
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234 | metadata_t metaoption;
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235 | get_parent_options (meta, metaoption);
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236 | formatlistptr->meta = metaoption;
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237 | }
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238 |
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239 | text_tmap::const_iterator it;
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240 | if ((it = metamap.find(meta)) != metamap.end()) {
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241 | formatlistptr->meta.metaindex = (*it).second.getint();
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242 | } else {
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243 | metamap[meta] = count;
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244 | metadata.push_back (meta);
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245 | formatlistptr->meta.metaindex = count;
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246 | count ++;
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247 | }
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248 | formatlistptr->meta.metaname = meta;
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249 | }
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250 | return true;
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251 | }
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252 |
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253 | static bool parse_string (const text_t &formatstring, format_t *formatlistptr,
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254 | text_tarray &metadata, bool &getParents,
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255 | text_tmap &metamap, int &metacount) {
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256 |
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257 | text_t text;
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258 | text_t::const_iterator here = formatstring.begin();
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259 | text_t::const_iterator end = formatstring.end();
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260 |
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261 | while (here != end) {
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262 |
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263 | if (*here == '\\')
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264 | text.push_back (*(++here));
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265 |
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266 | else if (*here == '{') {
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267 | if (!text.empty()) {
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268 | formatlistptr->command = comText;
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269 | formatlistptr->text = text;
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270 | formatlistptr->nextptr = new format_t();
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271 | formatlistptr = formatlistptr->nextptr;
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272 |
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273 | text.clear();
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274 | }
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275 | if (parse_action (++here, end, formatlistptr, metadata,
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276 | getParents, metamap, metacount)) {
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277 | formatlistptr->nextptr = new format_t();
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278 | formatlistptr = formatlistptr->nextptr;
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279 | if (here == end) break;
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280 | }
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281 | } else if (*here == '[') {
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282 | if (!text.empty()) {
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283 | formatlistptr->command = comText;
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284 | formatlistptr->text = text;
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285 | formatlistptr->nextptr = new format_t();
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286 | formatlistptr = formatlistptr->nextptr;
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287 |
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288 | text.clear();
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289 | }
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290 | text_t meta;
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291 | here ++;
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292 | while (*here != ']') {
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293 | if (here == end) return false;
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294 | meta.push_back (*here);
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295 | here ++;
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296 | }
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297 | if (parse_meta (meta, metacount, formatlistptr, metadata, getParents, metamap)) {
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298 | formatlistptr->nextptr = new format_t();
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299 | formatlistptr = formatlistptr->nextptr;
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300 | }
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301 |
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302 | } else
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303 | text.push_back (*here);
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304 |
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305 | if (here != end) here ++;
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306 | }
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307 | if (!text.empty()) {
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308 | formatlistptr->command = comText;
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309 | formatlistptr->text = text;
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310 | formatlistptr->nextptr = new format_t();
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311 | formatlistptr = formatlistptr->nextptr;
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312 |
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313 | }
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314 | return true;
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315 | }
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316 |
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317 |
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318 | static bool parse_action (text_t::const_iterator &here, const text_t::const_iterator &end,
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319 | format_t *formatlistptr, text_tarray &metadata, bool &getParents,
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320 | text_tmap &metamap, int &metacount) {
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321 |
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322 | text_t::const_iterator it = findchar (here, end, '}');
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323 | if (it == end) return false;
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324 |
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325 | text_t com = substr (here, it);
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326 | here = findchar (it, end, '{');
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327 | if (here == end) return false;
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328 | else here ++;
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329 |
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330 | if (com == "If") formatlistptr->command = comIf;
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331 | else if (com == "Or") formatlistptr->command = comOr;
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332 | else return false;
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333 |
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334 | int curlycount = 0;
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335 | int commacount = 0;
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336 | text_t text;
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337 | while (here != end) {
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338 |
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339 | if (*here == '\\') {
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340 | here++;
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341 | if (here != end) text.push_back(*here);
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342 |
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343 | } else if (*here == '{') {curlycount ++; text.push_back(*here);}
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344 | else if (*here == '}' && curlycount > 0) {
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345 | curlycount --;
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346 | text.push_back(*here);
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347 | }
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348 |
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349 | else if ((*here == ',' || *here == '}') && curlycount <= 0) {
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350 |
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351 | if (formatlistptr->command == comOr) {
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352 | // the {Or}{this, or this, or this, or this} statement
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353 | // or'ed statements may be either [metadata] or plain text
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354 | format_t *or_ptr;
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355 |
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356 | // find the next unused orptr
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357 | if (formatlistptr->orptr == NULL) {
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358 | formatlistptr->orptr = new format_t();
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359 | or_ptr = formatlistptr->orptr;
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360 | } else {
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361 | or_ptr = formatlistptr->orptr;
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362 | while (or_ptr->nextptr != NULL)
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363 | or_ptr = or_ptr->nextptr;
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364 | or_ptr->nextptr = new format_t();
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365 | or_ptr = or_ptr->nextptr;
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366 | }
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367 |
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368 | text_t::const_iterator beginbracket = text.begin();
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369 | text_t::const_iterator endbracket = (text.end() - 1);
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370 | if ((*beginbracket == '[') && (*endbracket == ']')) {
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371 | // it's metadata
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372 | text_t meta = substr (beginbracket+1, endbracket);
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373 | parse_meta (meta, metacount, or_ptr, metadata, getParents, metamap);
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374 |
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375 | } else {
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376 | // assume it's plain text
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377 | or_ptr->command = comText;
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378 | or_ptr->text = text;
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379 | }
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380 | text.clear();
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381 |
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382 | } else {
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383 | // the {If}{decide,do,else} statement
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384 | if (commacount == 0) {
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385 | // If decision only supports metadata at present
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386 |
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387 | // remove the surrounding square brackets
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388 | text_t::const_iterator beginbracket = text.begin();
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389 | text_t::const_iterator endbracket = (text.end() - 1);
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390 | if ((*beginbracket == '[') && (*endbracket == ']')) {
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391 | text_t meta = substr (beginbracket+1, endbracket);
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392 | decision_t decision;
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393 | parse_meta (meta, metacount, formatlistptr->decision,
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394 | metadata, getParents, metamap);
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395 | commacount ++;
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396 | text.clear();
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397 | }
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398 |
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399 | } else if (commacount == 1) {
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400 | formatlistptr->ifptr = new format_t();
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401 | parse_string (text, formatlistptr->ifptr, metadata,
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402 | getParents, metamap, metacount);
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403 | commacount ++;
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404 | text.clear();
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405 |
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406 | } else if (commacount == 2) {
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407 | formatlistptr->elseptr = new format_t();
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408 | parse_string (text, formatlistptr->elseptr, metadata,
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409 | getParents, metamap, metacount);
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410 | commacount ++;
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411 | text.clear();
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412 | }
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413 | }
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414 | if (*here == '}') break;
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415 |
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416 | } else text.push_back(*here);
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417 |
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418 | if (here != end) here ++;
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419 | }
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420 |
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421 | return true;
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422 | }
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423 |
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424 |
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425 | bool parse_formatstring (const text_t &formatstring, format_t *formatlistptr,
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426 | text_tarray &metadata, bool &getParents) {
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427 |
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428 | formatlistptr->clear();
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429 | metadata.erase (metadata.begin(), metadata.end());
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430 | getParents = false;
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431 |
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432 | text_tmap metamap;
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433 | int metacount = 0;
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434 | return (parse_string (formatstring, formatlistptr, metadata,
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435 | getParents, metamap, metacount));
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436 | }
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437 |
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438 |
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439 | // note: all the format_date stuff is assuming that all Date metadata is going to
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440 | // be of the form yyyymmdd, this is of course, crap ;)
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441 |
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442 | static text_t get_meta (const ResultDocInfo_t &docinfo, const metadata_t &meta) {
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443 | int metasize = docinfo.metadata.size();
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444 | int mindex = meta.metaindex;
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445 | if (metasize < 1 || metasize <= mindex) return "";
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446 | int valuesize = docinfo.metadata[mindex].values.size();
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447 |
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448 | switch (meta.parentcommand) {
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449 | case pNone:
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450 | if (meta.metaname == "Date")
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451 | return format_date (docinfo.metadata[mindex].values.back());
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452 | if (meta.metacommand == mCgiSafe)
|
---|
453 | return cgi_safe (docinfo.metadata[mindex].values.back());
|
---|
454 | else return docinfo.metadata[mindex].values.back();
|
---|
455 |
|
---|
456 | case pImmediate:
|
---|
457 | if (valuesize > 1) {
|
---|
458 | if (meta.metaname == "Date")
|
---|
459 | return format_date (docinfo.metadata[mindex].values[metasize-2]);
|
---|
460 | if (meta.metacommand == mCgiSafe)
|
---|
461 | return cgi_safe (docinfo.metadata[mindex].values[metasize-2]);
|
---|
462 | else return docinfo.metadata[mindex].values[metasize-2];
|
---|
463 | }
|
---|
464 | break;
|
---|
465 |
|
---|
466 | case pTop:
|
---|
467 | if (valuesize > 1) {
|
---|
468 | if (meta.metaname == "Date")
|
---|
469 | return format_date (docinfo.metadata[mindex].values[0]);
|
---|
470 | if (meta.metacommand == mCgiSafe)
|
---|
471 | return cgi_safe (docinfo.metadata[mindex].values[0]);
|
---|
472 | else return docinfo.metadata[mindex].values[0];
|
---|
473 | }
|
---|
474 | break;
|
---|
475 |
|
---|
476 | case pIndex:
|
---|
477 | if (valuesize > meta.parentindex) {
|
---|
478 | if (meta.metaname == "Date")
|
---|
479 | return format_date (docinfo.metadata[mindex].values[meta.parentindex]);
|
---|
480 | if (meta.metacommand == mCgiSafe)
|
---|
481 | return cgi_safe (docinfo.metadata[mindex].values[meta.parentindex]);
|
---|
482 | else return docinfo.metadata[mindex].values[meta.parentindex];
|
---|
483 | }
|
---|
484 | break;
|
---|
485 |
|
---|
486 | case pAll:
|
---|
487 | bool first = true;
|
---|
488 | text_t tmp;
|
---|
489 | if (valuesize > 1) {
|
---|
490 | text_tarray::const_iterator here = docinfo.metadata[mindex].values.begin();
|
---|
491 | // don't want last value as that's the value of the current level (i.e. it's
|
---|
492 | // not a parent
|
---|
493 | text_tarray::const_iterator end = docinfo.metadata[mindex].values.end() - 1;
|
---|
494 | while (here != end) {
|
---|
495 | if (!first) tmp += meta.parentoptions;
|
---|
496 | if (meta.metaname == "Date") tmp += format_date (*here);
|
---|
497 | else tmp += *here;
|
---|
498 | first = false;
|
---|
499 | here ++;
|
---|
500 | }
|
---|
501 | }
|
---|
502 | if (meta.metacommand == mCgiSafe) return cgi_safe (tmp);
|
---|
503 | else return tmp;
|
---|
504 | }
|
---|
505 | return "";
|
---|
506 | }
|
---|
507 |
|
---|
508 | static text_t get_or (const ResultDocInfo_t &docinfo, format_t *orptr,
|
---|
509 | const text_t &link, const text_t &icon, const text_t &text) {
|
---|
510 |
|
---|
511 | text_t tmp;
|
---|
512 | while (orptr != NULL) {
|
---|
513 |
|
---|
514 | tmp = format_string (docinfo, orptr, link, icon, text);
|
---|
515 | if (!tmp.empty()) return tmp;
|
---|
516 |
|
---|
517 | orptr = orptr->nextptr;
|
---|
518 | }
|
---|
519 | return "";
|
---|
520 | }
|
---|
521 |
|
---|
522 | static text_t get_if (const ResultDocInfo_t &docinfo, const decision_t &decision,
|
---|
523 | format_t *ifptr, format_t *elseptr, const text_t &link,
|
---|
524 | const text_t &icon, const text_t &text) {
|
---|
525 |
|
---|
526 | // not much of a choice yet ...
|
---|
527 | if (decision.command == dMeta) {
|
---|
528 | if (get_meta (docinfo, decision.meta) != "") {
|
---|
529 | if (ifptr != NULL)
|
---|
530 | return get_formatted_string (docinfo, ifptr, link, icon, text);
|
---|
531 | }
|
---|
532 | else {
|
---|
533 | if (elseptr != NULL)
|
---|
534 | return get_formatted_string (docinfo, elseptr, link, icon, text);
|
---|
535 | }
|
---|
536 | }
|
---|
537 | return "";
|
---|
538 | }
|
---|
539 |
|
---|
540 | text_t format_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr,
|
---|
541 | const text_t &link, const text_t &icon, const text_t &text) {
|
---|
542 |
|
---|
543 | if (formatlistptr == NULL) return "";
|
---|
544 |
|
---|
545 | switch (formatlistptr->command) {
|
---|
546 | case comText:
|
---|
547 | return formatlistptr->text;
|
---|
548 | case comLink:
|
---|
549 | return link;
|
---|
550 | case comEndLink:
|
---|
551 | if (link.empty()) return "";
|
---|
552 | else return "</a>";
|
---|
553 | case comIcon:
|
---|
554 | return icon;
|
---|
555 | case comNum:
|
---|
556 | return docinfo.result_num;
|
---|
557 | case comMeta:
|
---|
558 | return get_meta (docinfo, formatlistptr->meta);
|
---|
559 | case comDoc:
|
---|
560 | return text;
|
---|
561 | case comIf:
|
---|
562 | return get_if (docinfo, formatlistptr->decision, formatlistptr->ifptr,
|
---|
563 | formatlistptr->elseptr, link, icon, text);
|
---|
564 | case comOr:
|
---|
565 | return get_or (docinfo, formatlistptr->orptr, link, icon, text);
|
---|
566 | }
|
---|
567 | return "";
|
---|
568 | }
|
---|
569 |
|
---|
570 |
|
---|
571 | text_t get_formatted_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr,
|
---|
572 | const text_t &link, const text_t &icon) {
|
---|
573 |
|
---|
574 | text_t text;
|
---|
575 |
|
---|
576 | text_t ft;
|
---|
577 | while (formatlistptr != NULL) {
|
---|
578 | ft += format_string (docinfo, formatlistptr, link, icon, text);
|
---|
579 | formatlistptr = formatlistptr->nextptr;
|
---|
580 | }
|
---|
581 | return ft;
|
---|
582 | }
|
---|
583 |
|
---|
584 |
|
---|
585 | text_t get_formatted_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr) {
|
---|
586 |
|
---|
587 | text_t link = "<a href=\"_httpdocument_&cl=search&d=" + docinfo.OID + "\">";
|
---|
588 | text_t icon = "_icontext_";
|
---|
589 | text_t text;
|
---|
590 |
|
---|
591 | text_t ft;
|
---|
592 | while (formatlistptr != NULL) {
|
---|
593 | ft += format_string (docinfo, formatlistptr, link, icon, text);
|
---|
594 | formatlistptr = formatlistptr->nextptr;
|
---|
595 | }
|
---|
596 | return ft;
|
---|
597 | }
|
---|
598 |
|
---|
599 |
|
---|
600 | text_t get_formatted_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr,
|
---|
601 | const text_t &text) {
|
---|
602 |
|
---|
603 | text_t link = "<a href=\"_httpdocument_&cl=search&d=" + docinfo.OID + "\">";
|
---|
604 | text_t icon = "_icontext_";
|
---|
605 |
|
---|
606 | text_t ft;
|
---|
607 | while (formatlistptr != NULL) {
|
---|
608 | ft += format_string (docinfo, formatlistptr, link, icon, text);
|
---|
609 | formatlistptr = formatlistptr->nextptr;
|
---|
610 | }
|
---|
611 | return ft;
|
---|
612 | }
|
---|
613 |
|
---|
614 |
|
---|
615 | text_t get_formatted_string (const ResultDocInfo_t &docinfo, format_t *formatlistptr,
|
---|
616 | const text_t &link, const text_t &icon, const text_t &text) {
|
---|
617 |
|
---|
618 | text_t ft;
|
---|
619 | while (formatlistptr != NULL) {
|
---|
620 | ft += format_string (docinfo, formatlistptr, link, icon, text);
|
---|
621 | formatlistptr = formatlistptr->nextptr;
|
---|
622 | }
|
---|
623 | return ft;
|
---|
624 | }
|
---|
625 |
|
---|
626 |
|
---|
627 |
|
---|