Difference between revisions of "LlJsonGetValue"
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//if "j" is a single JSON_STRING, this may return what the string represents as a JSON within a string; a JSON_NUMBER , JSON_TRUE, TRUE ... | //if "j" is a single JSON_STRING, this may return what the string represents as a JSON within a string; a JSON_NUMBER , JSON_TRUE, TRUE ... | ||
k=llJsonGetValue("\"3.14\"",[]); //==k="3,14" //float that was stored in a JSON_STRING within a JSON. and not as JSON_NUMBER for no good reason | k=llJsonGetValue("\"3.14\"",[]); //==k="3,14" //float that was stored in a JSON_STRING within a JSON. and not as JSON_NUMBER for no good reason | ||
k=llJsonGetValue("\"TRUE\"" ,[]); //==k=TRUE | k=llJsonGetValue("\"TRUE\"" ,[]); //==k="TRUE" which may be important to communicate with a java application | ||
k=llJsonGetValue("\"JSON_TRUE\"",[]); //==k=JSON_TRUE="�"; | k=llJsonGetValue("\"JSON_TRUE\"",[]); //==k=JSON_TRUE="�"; //which is the reverse part for an sl scripts "true" states | ||
k= llJsonGetValue(j,[1]);//returns only the first entry. An entry can be many things, a string, a float stored as string, | k= llJsonGetValue(j,[1]);//returns only the first entry. An entry can be many things, a string, a float stored as string, | ||
//a [list] or {object}, each entry being separated by a comma from other entries. | //a [list] or {object}, each entry being separated by a comma from other entries. | ||
Revision as of 19:16, 10 September 2014
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Summary
Function: string llJsonGetValue( string json, list specifiers );| 0.0 | Forced Delay |
| 10.0 | Energy |
Gets the value indicated by specifiers from the json string.
Returns a string made by parsing json, a string representing json and traversing as specified by specifiers.
| • string | json | |||
| • list | specifiers |
When the input is invalid or no result can be found this function returns JSON_INVALID. If the result is null the function returns JSON_NULL.
Specification
Examples
<lsl> JGetValTest(){ string j="[[1,2],[4,5,6]]"; //JSON may be written directly as a string like this in sl. string k; //this will change with each command below; k=llJsonGetValue(j,[]); //returns the whole "list" of a JSON. It might just be one entry or a whole nested list or whole nested object. //if "j" is a single JSON_STRING, this may return what the string represents as a JSON within a string; a JSON_NUMBER , JSON_TRUE, TRUE ... k=llJsonGetValue("\"3.14\"",[]); //==k="3,14" //float that was stored in a JSON_STRING within a JSON. and not as JSON_NUMBER for no good reason k=llJsonGetValue("\"TRUE\"" ,[]); //==k="TRUE" which may be important to communicate with a java application k=llJsonGetValue("\"JSON_TRUE\"",[]); //==k=JSON_TRUE="�"; //which is the reverse part for an sl scripts "true" states k= llJsonGetValue(j,[1]);//returns only the first entry. An entry can be many things, a string, a float stored as string,
//a [list] or {object}, each entry being separated by a comma from other entries.
//list and object entries may contain multiple comma separated entries within them.
k= llJsonGetValue(j,[2]);//returns only the second entry... (all the above still counts) k="[4,5,6]"; k=llJsonGetValue(llJsonGetValue(j,[2]),[3]);
//instead of getting an entry from "j" we get a sub-entry from llJsonGetValue(j,[2]),
//assuming the sub-entry is a JSON_LIST. It returns the 3rd sub-entry of the second entry,
//that is a list with 3 entries. it would make jk="6".
//it will return JSON_INVALID if there is no 3rd entry in no 2nd sub-list.
} </lsl>
see LlJsonValueType for LlJsonGetValue()-examples, because its better to test if the LlJsonValueType() is correct before getting its value as that type.