https://sinchon517.com/js/jquery.cssjson.js

1/**
2 * CSS-JSON Converter for JavaScript
3 * Converts CSS to JSON and back.
4 * Version 2.1
5 *
6 * Released under the MIT license.
7 * 
8 * Copyright (c) 2013 Aram Kocharyan, http://aramk.com/
9
10 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
11 documentation files (the "Software"), to deal in the Software without restriction, including without limitation
12 the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
13 to permit persons to whom the Software is furnished to do so, subject to the following conditions:
14
15 The above copyright notice and this permission notice shall be included in all copies or substantial portions
16 of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
19 THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 THE SOFTWARE.
23 */
24
25var CSSJSON = new function () {
26
27    var base = this;
28
29    base.init = function () {
30        // String functions
31        String.prototype.trim = function () {
32            return this.replace(/^\s+|\s+$/g, '');
33        };
34
35        String.prototype.repeat = function (n) {
36            return new Array(1 + n).join(this);
37        };
38    };
39    base.init();
40
41    var selX = /([^\s\;\{\}][^\;\{\}]*)\{/g;
42    var endX = /\}/g;
43    var lineX = /([^\;\{\}]*)\;/g;
44    var commentX = /\/\*[\s\S]*?\*\//g;
45    var lineAttrX = /([^\:]+):([^\;]*);/;
46
47    // This is used, a concatenation of all above. We use alternation to
48    // capture.
49    var altX = /(\/\*[\s\S]*?\*\/)|([^\s\;\{\}][^\;\{\}]*(?=\{))|(\})|([^\;\{\}]+\;(?!\s*\*\/))/gmi;
50
51    // Capture groups
52    var capComment = 1;
53    var capSelector = 2;
54    var capEnd = 3;
55    var capAttr = 4;
56
57    var isEmpty = function (x) {
58        return typeof x == 'undefined' || x.length == 0 || x == null;
59    };
60
61    /**
62     * Input is css string and current pos, returns JSON object
63     *
64     * @param cssString
65     *            The CSS string.
66     * @param args
67     *            An optional argument object. ordered: Whether order of
68     *            comments and other nodes should be kept in the output. This
69     *            will return an object where all the keys are numbers and the
70     *            values are objects containing "name" and "value" keys for each
71     *            node. comments: Whether to capture comments. split: Whether to
72     *            split each comma separated list of selectors.
73     */
74    base.toJSON = function (cssString, args) {
75        var node = {
76            children: {},
77            attributes: {}
78        };
79        var match = null;
80        var count = 0;
81
82        if (typeof args == 'undefined') {
83            var args = {
84                ordered: false,
85                comments: false,
86                stripComments: false,
87                split: false
88            };
89        }
90        if (args.stripComments) {
91            args.comments = false;
92            cssString = cssString.replace(commentX, '');
93        }
94
95        while ((match = altX.exec(cssString)) != null) {
96            if (!isEmpty(match[capComment]) && args.comments) {
97                // Comment
98                var add = match[capComment].trim();
99                node[count++] = add;
100            } else if (!isEmpty(match[capSelector])) {
101                // New node, we recurse
102                var name = match[capSelector].trim();
103                // This will return when we encounter a closing brace
104                var newNode = base.toJSON(cssString, args);
105                if (args.ordered) {
106                    var obj = {};
107                    obj['name'] = name;
108                    obj['value'] = newNode;
109                    // Since we must use key as index to keep order and not
110                    // name, this will differentiate between a Rule Node and an
111                    // Attribute, since both contain a name and value pair.
112                    obj['type'] = 'rule';
113                    node[count++] = obj;
114                } else {
115                    if (args.split) {
116                        var bits = name.split(',');
117                    } else {
118                        var bits = [name];
119                    }
120                    for (i in bits) {
121                        var sel = bits[i].trim();
122                        if (sel in node.children) {
123                            for (var att in newNode.attributes) {
124                                node.children[sel].attributes[att] = newNode.attributes[att];
125                            }
126                        } else {
127                            node.children[sel] = newNode;
128                        }
129                    }
130                }
131            } else if (!isEmpty(match[capEnd])) {
132                // Node has finished
133                return node;
134            } else if (!isEmpty(match[capAttr])) {
135                var line = match[capAttr].trim();
136                var attr = lineAttrX.exec(line);
137                if (attr) {
138                    // Attribute
139                    var name = attr[1].trim();
140                    var value = attr[2].trim();
141                    if (args.ordered) {
142                        var obj = {};
143                        obj['name'] = name;
144                        obj['value'] = value;
145                        obj['type'] = 'attr';
146                        node[count++] = obj;
147                    } else {
148                        if (name in node.attributes) {
149                            var currVal = node.attributes[name];
150                            if (!(currVal instanceof Array)) {
151                                node.attributes[name] = [currVal];
152                            }
153                            node.attributes[name].push(value);
154                        } else {
155                            node.attributes[name] = value;
156                        }
157                    }
158                } else {
159                    // Semicolon terminated line
160                    node[count++] = line;
161                }
162            }
163        }
164
165        return node;
166    };
167
168    /**
169     * @param node
170     *            A JSON node.
171     * @param depth
172     *            The depth of the current node; used for indentation and
173     *            optional.
174     * @param breaks
175     *            Whether to add line breaks in the output.
176     */
177    base.toCSS = function (node, depth, breaks) {
178        var cssString = '';
179        if (typeof depth == 'undefined') {
180            depth = 0;
181        }
182        if (typeof breaks == 'undefined') {
183            breaks = false;

184        }
185        if (typeof node.attributes !== 'undefined' && node.attributes) {
186            for (i in node.attributes) {
187                var att = node.attributes[i];
188                if (att instanceof Array) {
189                    for (var j = 0; j < att.length; j++) {
190                        cssString += strAttr(i, att[j], depth);
191                    }
192                } else {
193                    cssString += strAttr(i, att, depth);
194                }
195            }
196        }
197        if (node.children) {
198            var first = true;
199            for (i in node.children) {
200                if (breaks && !first) {
201                    cssString += '\n';
202                } else {
203                    first = false;
204                }
205                cssString += strNode(i, node.children[i], depth);
206            }
207        }
208        return cssString;
209    };
210
211    // Helpers
212
213    var strAttr = function (name, value, depth) {
214        return '\t'.repeat(depth) + name + ': ' + value + ';\n';
215    };
216
217    var strNode = function (name, value, depth) {
218        var cssString = '\t'.repeat(depth) + name + ' {\n';
219        cssString += base.toCSS(value, depth + 1);
220        cssString += '\t'.repeat(depth) + '}\n';
221        return cssString;
222    };
223
224};