95 lines
3.0 KiB
JavaScript
95 lines
3.0 KiB
JavaScript
/*! JSON.minify()
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v0.1 (c) Kyle Simpson
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MIT License
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*/
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/**
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* @name minify.json.js
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* @author Kei Funagayama <kei.topaz@gmail.com
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* @overview JSON.minify
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*/
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/**
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* @namespace JSON
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*/
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(function(global){
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'use strict';
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/**
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* @function
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* @memberof JSON
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* @param {Object} Transformed data. format) json-like
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* @return {String}
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*
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* @example
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* var json = { // hoge
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* "foo": "bar",// this is cool
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* "bar": [
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* "baz", "bum", "zam" // this is cool
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* ]
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* } // hoge
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*
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*/
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var minify = function (json) {
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var tokenizer = /"|(\/\*)|(\*\/)|(\/\/)|\n|\r|\[|]/g,
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in_string = false,
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in_multiline_comment = false,
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in_singleline_comment = false,
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tmp, tmp2, new_str = [], ns = 0, from = 0, lc, rc
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;
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tokenizer.lastIndex = 0;
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while ( tmp = tokenizer.exec(json) ) {
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lc = RegExp.leftContext;
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rc = RegExp.rightContext;
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if (!in_multiline_comment && !in_singleline_comment) {
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tmp2 = lc.substring(from);
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if (!in_string) {
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tmp2 = tmp2.replace(/(\n|\r|\s)*/g,"");
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}
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new_str[ns++] = tmp2;
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}
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from = tokenizer.lastIndex;
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if (tmp[0] === "\"" && !in_multiline_comment && !in_singleline_comment) {
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tmp2 = lc.match(/(\\)*$/);
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if (!in_string || !tmp2 || (tmp2[0].length % 2) === 0) { // start of string with ", or unescaped " character found to end string
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in_string = !in_string;
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}
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from--; // include " character in next catch
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rc = json.substring(from);
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}
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else if (tmp[0] === "/*" && !in_string && !in_multiline_comment && !in_singleline_comment) {
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in_multiline_comment = true;
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}
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else if (tmp[0] === "*/" && !in_string && in_multiline_comment && !in_singleline_comment) {
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in_multiline_comment = false;
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}
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else if (tmp[0] === "//" && !in_string && !in_multiline_comment && !in_singleline_comment) {
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in_singleline_comment = true;
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}
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else if ((tmp[0] === "\n" || tmp[0] === "\r") && !in_string && !in_multiline_comment && in_singleline_comment) {
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in_singleline_comment = false;
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}
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else if (!in_multiline_comment && !in_singleline_comment && !(/\n|\r|\s/.test(tmp[0]))) {
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new_str[ns++] = tmp[0];
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}
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}
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new_str[ns++] = rc;
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return new_str.join("");
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};
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if (typeof module !== 'undefined' && module.exports) {
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// node
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module.exports = minify;
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JSON.minify = minify;
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} else {
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// others, export global
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if (typeof global.JSON === "undefined" || !global.JSON) {
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global.JSON = {};
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}
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global.JSON.minify = minify;
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}
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})(this);
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