HJSON:構成を追加可能なJSON拡張

HJSON.md
HJSONは、JSONファイルに構成可能な構成構文を追加します.たとえば、コメント、Keyと文字列の二重引用符の省略、末尾のカンマの省略などです.

{
  # specify rate in requests/second (because comments are helpful!)
  rate: 1000

  // prefer c-style comments?
  /* feeling old fashioned? */

  # did you notice that rate doesn't need quotes?
  hey: look ma, no quotes for strings either!

  # best of all
  notice: []
  anything: ?

  # yes, commas are optional!

  # Obviously you can always use standard JSON syntax as well:
  favNumbers: [ 1, 2, 3, 6, 42 ]
}

Syntax

Keys

You only need to add quotes if the key name includes whitespace or any of these characters: {}[],: .

Strings

When you omit quotes the string ends at the newline. Preceding and trailing whitespace is ignored as are escapes.
A value that is a number, true , false or null in JSON is parsed as a value. E.g. 3 is a valid number while 3 times is a string.
Naturally a quoteless string cannot start with { or [ .
Use quotes to have your string handled like in JSON. This also allows you to specify a comment after the string.

Multiline Strings

Start with triple quotes ''' , whitespace on the first line is ignored

''' defines the head, on the following lines all whitespace up to this column is ignored

all other whitespace is assumed to be part of the string.

ends with triple quotes ''' . The last newline is ignored to allow for better formatting.

A multiline string is OS and file independent. The line feed is always
.

Commas

Commas are optional at the end of a line. You only need commas to specify multiple values on one line (e.g. [1,2,3] ).
Trailing commas are ignored.

Comments

# and // start a single line comment. /* starts a multiline comment that ends with */ .

Root braces

Can be omitted for objects.

Mime Type

text/hjson (pending)

File extension

.hjson

Header

Hjson does not have a header but if you want to indicate the file type (in an rc file or in a database) you can use #hjson in the first line.
Implementation
NodeJS
Install with npm i hjson -g
hjson file.json will convert to Hjson. hjson -j file.hjson will convert to JSON.
Java

  org.hjson
  hjson
  1.0.0

(1)Convert

// convert Hjson to JSON
String jsonString = JsonValue.readHjson(readerOrHjsonString).toString();

// convert JSON to Hjson
String hjsonString = JsonValue.readHjson(readerOrJSONString).toString(Stringify.HJSON);

(2)Read

JsonObject jsonObject = JsonValue.readHjson(string).asObject();
JsonArray jsonArray = JsonValue.readHjson(reader).asArray();

Python
Install with pip install hjson
python -m hjson.tool file.json will convert to Hjson. python -m hjson.tool -j file.hjson will convert to JSON.
.NET
As Nuget does not install commandline tools

please build from source

and add cli\bin\Release to your path.

hjsonc file.json will convert to Hjson. hjsonc -j file.hjson will convert to JSON.