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annotate src/luan/modules/lucene/Web_search.luan @ 1152:21d157b153fe

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change http parameters interface
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 04 Feb 2018 19:25:12 -0700
parents bae2d0c2576c
children 73d754b1889f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local pairs = Luan.pairs or error()
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4 local ipairs = Luan.ipairs or error()
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5 local range = Luan.range or error()
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6 local to_string = Luan.to_string or error()
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7 local Io = require "luan:Io.luan"
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8 local repr = Io.repr or error()
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9 local Http = require "luan:http/Http.luan"
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10 local String = require "luan:String.luan"
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11 local string_to_number = String.to_number or error()
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12 local Html = require "luan:Html.luan"
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14
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15 local Web_search = {}
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16
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17 local function style() %>
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18 body {
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19 font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
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20 margin: 2em 5%;
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21 }
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22 h2 {
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23 margin-bottom: .5em;
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24 }
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25 label {
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26 text-align: right;
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27 min-width: 6em;
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28 display: inline-block;
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29 margin-right: .5em;
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30 }
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31 <%
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32 end
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33
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34 local function form() %>
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35 <html>
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36 <head>
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37 <title>Lucene Query</title>
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38 <style>
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39 <% style() %>
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40 input {
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41 margin-top: 1em;
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42 }
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43 input[type="text"] {
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44 font: inherit;
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45 padding: .5em .8em;
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46 border-radius: 8px;
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47 border-style: groove;
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48 }
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49 input[type="text"]:focus {
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50 border-color: #66afe9;
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51 outline: none;
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52 }
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53 span[tip] {
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54 color: #888;
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55 font-size: smaller;
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56 margin-left: .5em;
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57 }
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58 input[type="submit"] {
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59 color: white;
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60 background: #337ab7;
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61 border-color: #337ab7;
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62 font: inherit;
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63 padding: .5em;
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64 border-radius: 4px;
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65 }
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66 input[type="submit"]:hover {
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67 background: #236aa7 !important;
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68 }
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69 </style>
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70 </head>
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71 <body>
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72 <h2>Lucene Query</h2>
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73 <form horizontal name="form0" method="post">
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74 <div>
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75 <label>Query:</label>
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76 <input type=text name="query" size="80" autofocus />
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77 </div>
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78 <div>
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79 <label></label>
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80 <span tip>Query examples: <i>type:user</i> or <i>+type:user +name:Joe"</i></span>
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81 </div>
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82 <div>
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83 <label>Max Rows:</label>
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84 <input type=text name="rows" value="100" size="3" maxlength="5" />
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85 </div>
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86 <div>
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87 <label>Sort:</label>
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88 <input type=text name="sort" size="60" />
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89 </div>
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90 <div>
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91 <label></label>
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92 <span tip>Sort examples: <i>name, id</i></span>
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93 </div>
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94 <div>
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95 <label></label>
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96 <input type="submit" />
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97 </div>
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98 </form>
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99 </body>
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100 </html>
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101 <% end
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102
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103
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104 local function result(query,sort,headers,table) %>
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105 <html>
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106 <head>
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107 <title>Lucene Query</title>
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108 <style>
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109 <% style() %>
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110 table {
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111 border-collapse: collapse;
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112 width: 100%;
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113 font-size: smaller;
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114 }
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115 th, td {
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116 text-align: left;
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117 padding: .5em;
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118 border: solid 1px #ddd;
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119 }
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120 </style>
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121 </head>
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122 <body>
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123 <h2>Lucene Query Results</h2>
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124 <p><label>Query:</label> <b><%=Html.encode(to_string(query))%></b></p>
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125 <p><label>Sort:</label> <b><%=Html.encode(to_string(sort))%></b></p>
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126 <table>
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127 <tr>
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128 <th></th>
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129 <% for _, header in ipairs(headers) do %>
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130 <th><%=header%></th>
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131 <% end %>
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132 </tr>
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133 <% for i, row in ipairs(table) do %>
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134 <tr>
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135 <td><%=i%></td>
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136 <%
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137 for col in range(1, #headers) do
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138 local val = row[col]
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139 %><td><%= val and repr(val) or "" %></td><%
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140 end
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141 %>
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142 </tr>
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143 <% end %>
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144 </table>
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145 </body>
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146 </html>
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147 <% end
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148
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150 local function index_of(tbl,val)
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151 for i, v in ipairs(tbl) do
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152 if v == val then
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153 return i
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154 end
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155 end
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156 local n = #tbl + 1
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157 tbl[n] = val
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158 return n
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159 end
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160
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161
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162 function Web_search.of(index)
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163 index or error "index is nil"
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164
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165 return function()
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166 Io.stdout = Http.response.text_writer()
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167 local query = Http.request.parameters.query
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168 if query == nil then
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169 form()
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170 return
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171 end
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172 local rows = string_to_number(Http.request.parameters.rows)
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173 local sort = Http.request.parameters.sort
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174 local results = index.search(query,1,rows,sort)
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175 local headers = {}
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176 local table = {}
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177 for _, doc in ipairs(results) do
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178 local row = {}
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179 for field, value in pairs(doc) do
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180 row[index_of(headers,field)] = value
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181 end
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182 table[#table+1] = row
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183 end
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184 result(query,sort,headers,table)
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185 end
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186
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187 end
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188
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189 return Web_search