luajit-jsonnet 介绍
luajit-jsonnet 是 针对google jsonnet的lua开发支持。
Name
luajit-jsonnet - The Google Jsonnet( operation data template language) for
Luajit
Table of
Contents
Description
jsonnet is a domain specific configuration language that helps you define JSON
data. Jsonnet lets you compute fragments of JSON within the structure,
bringing the same benefit to structured data that templating languages bring
to plain text. The example below illustrates a few features – referring to
another part of the structure, overriding object fields, and string
operations......
luajit-jsonnet - Use the luajit ffi jsonnet interface calls and operation
Google jsonnet documet: (http://google.github.io/jsonnet/doc/)
install
Simple executing the following command
make install
Methods
new
Create a luajit - jsonnet object
local jso = require "jsonnet" jsonnet = jso:new()
make
Create a new Jsonnet virtual machine.
syntax: res, err = jsonnet:make()
evaluate_file
Evaluate a file containing Jsonnet code, return a JSON string.
syntax: res,err = jsonnet:evaluate_file("t.jsonnet")
local jso = require "jsonnet"
jsonnet = jso:new()
jsonnet:make()
res,err = jsonnet:evaluate_file("t.jsonnet")
if err == nil then
print(res)
else
print(err)
end
[](https://github.com/yuduanchen/luajit-
jsonnet#evaluate_snippet)evaluate_snippet
Evaluate a file containing Jsonnet code, return a JSON string.
syntax: res,err = jsonnet:evaluate_snippet(snippet)
local snippet = '{ person1: { name: "Alice", welcome: "Hello " + self.name + "!", }, person2: self.person1 { name: "Bob" },}'
res,err = jsonnet:evaluate_snippet(snippet)
if err == nil then
print(res)
else
print(err)
end
[](https://github.com/yuduanchen/luajit-
jsonnet#evaluate_file_multi)evaluate_file_multi
Evaluate a file containing Jsonnet code, return a number of JSON files. The
returned character buffer contains an even number of strings, the filename and
JSON for each
syntax: res,err = jsonnet:evaluate_file_multi("t.jsonnet")
[](https://github.com/yuduanchen/luajit-
jsonnet#evaluate_snippet_multi)evaluate_snippet_multi
Evaluate a string containing Jsonnet code, return a number of JSON files. The
returned character buffer contains an even number of strings, the filename and
JSON for each
syntax: res,err = jsonnet:evaluate_snippet_multi(snippet)
destroy
Shut down and release Jsonnet virtual machine.
syntax: res,err = jsonnet:destroy(vm)
local jso = require "jsonnet"
jsonnet = jso:new()
jsonnet:make()
res,err = jsonnet:evaluate_file("t.jsonnet")
jsonnet:destroy()