jsonwrap 1.0.5

jsonwrap

Just a wrap over dlang std.json.

Setup

Add jsonwrap to your dub project:

## Quickstart

jsonwrap just adds some useful methods to ```JSONValue``` from ```std.json```.

import jsonwrap;

void main() { import std.exception :assertThrown;

// This works with CTFE, too. auto j = JSOB(

"field1", "value1",
"field2", JSOB(
  "subfield1", "value2",
  "subfield2", 3,
  "subfield3", [1,2,3],
),
"field3", JSAB("mixed", 10, "array", JSOB("obj", 15))

);

// Or // auto j = parseJSON({"field" : "value1"});

// Read will throw on error assert(j.read!string("/field2/subfield1") == "value2"); assert(j.read!int("/field3/1") == 10); assert(j.read!int("/field3/3/obj") == 15); assertThrown(j.read!string("/field2/subfield2")); // Wrong type

// Safe return default value on error assert(j.safe!string("/field2/subfield2") == string.init); // subfield2 is a int, wrong type. assert(j.safe!string("/field2/wrong/path") == string.init); assert(j.safe!string("/field2/wrong/path", "default") == "default");

// Like safe, but it tries to convert assert(j.as!string("/field2/subfield1"), "value2"); assert(j.as!string("/field2/subfield2"), "3");

// Check if a key exists assert(j.exists("/field2/subfield1") == true); assert(j.exists("/field3/test") == false);

// Remove a key assert(j.exists("/field2/subfield2") == true); j.remove("/field2/subfield2"); assert(j.exists("/field2/subfield2") == false);

// Add a new value, recreating the whole tree j.put("hello/world/so/deep", "yay!"); assert(j.exists("hello/world/so/deep") == true);

}

## One more thing

import std.json; import jsonwrap;

// std.json way to parse json JSONValue json = parseJSON(` { "user" : "foo", "address" : {

"city" : "venice",
"country" : "italy"

}, "tags" : ["hello" , 3 , {"key" : "value"}] } `);

{ // Read a string, user is a SafeValue!string auto user = json.safe!string("user"); assert(user.ok == true); assert(user.exists == true);

// This field doesn't exists on json // I can set a default value auto notfound = json.safe!string("blah", "my default value"); assert(notfound.ok == false); assert(notfound.exists == false); assert(notfound == "my default value");

// This field exists but it's not an int, it's a string auto wrong = json.safe!int("user"); assert(wrong.ok == false); assert(wrong.exists == true); assert(wrong == int.init); }

Documentation available [here](https://jsonwrap.dpldocs.info/jsonwrap.html)