git.r.bdr.sh - rbdr/dotfiles/blob - atom/packages/pretty-json/node_modules/jsonminify/minify.json.js

   1 /*! JSON.minify()
   2     v0.1 (c) Kyle Simpson
   3     MIT License
   4 */
   5 /**
   6  * @name minify.json.js
   7  * @author Kei Funagayama <kei.topaz@gmail.com
   8  * @overview JSON.minify
   9  */
  10
  11 /**
  12  * @namespace JSON
  13  */
  14 (function(global){
  15     'use strict';
  16
  17     /**
  18      * @function
  19      * @memberof JSON
  20      * @param {Object} Transformed data. format) json-like
  21      * @return {String}
  22      *
  23      * @example
  24      * var json = { // hoge
  25      *     "foo": "bar",// this is cool
  26      *     "bar": [
  27      *         "baz", "bum", "zam"   // this is cool
  28      *     ]
  29      * } // hoge
  30      *
  31      */
  32     var minify = function (json) {
  33
  34         var tokenizer = /"|(\/\*)|(\*\/)|(\/\/)|\n|\r/g,
  35             in_string = false,
  36             in_multiline_comment = false,
  37             in_singleline_comment = false,
  38             tmp, tmp2, new_str = [], ns = 0, from = 0, lc, rc
  39         ;
  40
  41         tokenizer.lastIndex = 0;
  42
  43         while ( tmp = tokenizer.exec(json) ) {
  44             lc = RegExp.leftContext;
  45             rc = RegExp.rightContext;
  46             if (!in_multiline_comment && !in_singleline_comment) {
  47                 tmp2 = lc.substring(from);
  48                 if (!in_string) {
  49                     tmp2 = tmp2.replace(/(\n|\r|\s)*/g,"");
  50                 }
  51                 new_str[ns++] = tmp2;
  52             }
  53             from = tokenizer.lastIndex;
  54
  55             if (tmp[0] === "\"" && !in_multiline_comment && !in_singleline_comment) {
  56                 tmp2 = lc.match(/(\\)*$/);
  57                 if (!in_string || !tmp2 || (tmp2[0].length % 2) === 0) {    // start of string with ", or unescaped " character found to end string
  58                     in_string = !in_string;
  59                 }
  60                 from--; // include " character in next catch
  61                 rc = json.substring(from);
  62             }
  63             else if (tmp[0] === "/*" && !in_string && !in_multiline_comment && !in_singleline_comment) {
  64                 in_multiline_comment = true;
  65             }
  66             else if (tmp[0] === "*/" && !in_string && in_multiline_comment && !in_singleline_comment) {
  67                 in_multiline_comment = false;
  68             }
  69             else if (tmp[0] === "//" && !in_string && !in_multiline_comment && !in_singleline_comment) {
  70                 in_singleline_comment = true;
  71             }
  72             else if ((tmp[0] === "\n" || tmp[0] === "\r") && !in_string && !in_multiline_comment && in_singleline_comment) {
  73                 in_singleline_comment = false;
  74             }
  75             else if (!in_multiline_comment && !in_singleline_comment && !(/\n|\r|\s/.test(tmp[0]))) {
  76                 new_str[ns++] = tmp[0];
  77             }
  78         }
  79         new_str[ns++] = rc;
  80         return new_str.join("");
  81     };
  82
  83     if (typeof module !== 'undefined' && module.exports) {
  84         // node
  85         module.exports = minify;
  86         JSON.minify = minify;
  87     } else {
  88         // others, export global
  89         if (typeof global.JSON === "undefined" || !global.JSON) {
  90             global.JSON = {};
  91         }
  92         global.JSON.minify = minify;
  93     }
  94 })(this);