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167 <h1>Object Instance <code>luci.jsonc.parser</code></h1>
170 LuCI JSON parser instance.
171 A JSON parser instance is useful to parse JSON data chunk by chunk, without
172 the need to assemble all data in advance.</p>
181 <table class="function_list">
184 <td class="name" nowrap><a href="#parser.parse">parser:parse</a> (json)</td>
187 Parses one chunk of JSON data.</td>
191 <td class="name" nowrap><a href="#parser.get">parser:get</a> ()</td>
194 Convert parsed JSON data into Lua table.</td>
198 <td class="name" nowrap><a href="#parser.set">parser:set</a> (data)</td>
201 Put Lua data into the parser.</td>
205 <td class="name" nowrap><a href="#parser.stringify">parser:stringify</a> (pretty)</td>
208 Serialize current parser state as JSON.</td>
222 <h2><a name="functions"></a>Functions</h2>
223 <dl class="function">
227 <dt><a name="parser.parse"></a><strong>parser:parse</strong> (json)</dt>
231 Parses one chunk of JSON data.
239 json: String containing the JSON fragment to parse
248 <pre>parser = luci.jsonc.new()
251 chunk = ... -- fetch a cunk of data, e.g. from a socket
252 finish, errmsg = <b>parser.parse(chunk)</b>
254 if finish == nil then
255 error("Cannot parse JSON: " .. errmsg)
258 if finish == true then
265 <h3>Return value:</h3>
267 <li><code>true</code> if a complete JSON object has been parsed and no further input is
269 <li><code>false</code> if further input is required</li>
270 <li><code>nil</code> if an error was encountered while parsing the current chunk.
271 In this case a string describing the parse error is returned as second
279 <li><a href="#parser.get">
290 <dt><a name="parser.get"></a><strong>parser:get</strong> ()</dt>
294 Convert parsed JSON data into Lua table.
302 <pre>parser = luci.jsonc.new()
303 parser:parse('{ "example": "test" }')
306 print(data.example) -- "test"</pre>
310 <h3>Return value:</h3>
311 Parsed JSON object converted into a Lua table or <code>nil</code> if the parser
312 didn't finish or encountered an error.
319 <li><a href="#parser.parse">
330 <dt><a name="parser.set"></a><strong>parser:set</strong> (data)</dt>
334 Put Lua data into the parser.
342 data: Lua data to put into the parser object. The data is converted to an
343 internal JSON representation that can be dumped with <code>stringify()</code>.
344 The conversion follows the rules described in <code>luci.jsonc.stringify</code>.
353 <pre>parser = luci.jsonc.new()
354 parser:set({ "some", "data" })</pre>
358 <h3>Return value:</h3>
366 <li><a href="#parser.stringify">
377 <dt><a name="parser.stringify"></a><strong>parser:stringify</strong> (pretty)</dt>
381 Serialize current parser state as JSON.
389 pretty: A boolean value indicating whether the resulting JSON should be pretty printed.
398 <pre>parser = luci.jsonc.new()
399 parser:parse('{ "example": "test" }')
400 print(parser:serialize()) -- '{"example":"test"}'</pre>
404 <h3>Return value:</h3>
405 Returns the serialized JSON data of this parser instance.
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