server/source/helpers/json.ts (faf7e12) - fs-words.git

json.ts

namespace helpers.json
{
	
	/**
	 */
	export function encode_extended
	(
		data : any,
		formatted : boolean,
		depth : int
	) : string
	{
		const indentation : string = "\t";
        const break_hard : string = (formatted ? "\n" : "");
        const break_soft : string = (formatted ? "\n" : "");
        const indent : (offset : int)=>string = (offset => (formatted ? indentation.repeat(depth+offset) : ""));
		// let output : string = '';
		if (data === null)
		{
			return 'null';
		}
		else
		{
			if (! (typeof(data) === 'object'))
			{
		        return JSON.stringify(data);
			}
			else
			{
				if (data instanceof Array)
				{
		            const count : int = data.length;
		            let str : string = "";
		            // head
		            {
		                str += ("[" + break_hard);
		            }
		            // body
		            {
		                let index : int = 0;
		                for (let element of data)
		            	{
			                str += (indent(1) + encode_extended(element, formatted, depth+1));
			                if (index < (count-1)) str += ",";
			                str += break_soft;
			                index += 1;
		            	}
		            }
		            // tail
		            {
		                str += (indent(0) + "]");
		            }
		            return str;
				}
				else
				{
		            const count : int = Object.keys(data).length;
		            let str : string = "";
		            // head
		            {
		                str += ("{" + break_hard);
		            }
		            // body
		            {
		                let index : int = 0;
		                for (let key of Object.keys(data).sort())
		                {
		                	const value : any = data[key];
		                    str += (indent(1) + "\"" + key + "\": " + encode_extended(value, formatted, depth+1) + "");
		                    if (index < (count-1)) str += ",";
		                    str += break_soft;
		                    index += 1;
		                }
		            }
		            // tail
		            {
		                str += (indent(0) + "}");
		            }
		            return str;
				}
			}
		}
	}
	
	
	/**
	 */
	export function encode
	(
		thing : any
	) : string
	{
		return encode_extended(thing, false, 0);
	}
	
	
	/**
	 */
	export function decode
	(
		str : string
	) : any
	{
		return JSON.parse(str);
	}
	
}

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