dlee-libo.github.io/jsonviewer.html at main · dlee-libo/dlee-libo.github.io · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Structura - JSON/YAML Viewer</title>

    <!-- 1. Tailwind CSS for styling -->
    <script src="https://cdn.tailwindcss.com"></script>

    <!-- 2. js-yaml for parsing YAML -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/4.1.0/js-yaml.min.js"></script>

    <!-- 3. Babel for compiling JSX in the browser -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
</head>
<body class="bg-slate-950 text-slate-200 h-screen overflow-hidden">
    <div id="root" class="h-full"></div>

    <!-- 4. The Application Logic -->
    <script type="text/babel" data-type="module">
        // Import React and Icons directly from a CDN
        import React, { useState, useEffect, useCallback } from 'https://esm.sh/react@18.2.0';
        import { createRoot } from 'https://esm.sh/react-dom@18.2.0/client';
        import {
            ChevronRight, ChevronDown, Copy, Trash2, AlertCircle,
            FileJson, Braces, List, Check, PanelLeft
        } from 'https://esm.sh/lucide-react@0.292.0';

        // --- Component: Value Renderer ---
        const ValueRenderer = ({ value }) => {
            if (value === null) return <span className="text-gray-400 italic">null</span>;
            if (value === undefined) return <span className="text-gray-400 italic">undefined</span>;

            const type = typeof value;

            if (type === 'boolean') {
                return <span className="text-purple-400 font-semibold">{value.toString()}</span>;
            }

            if (type === 'number') {
                return <span className="text-blue-400">{value}</span>;
            }

            if (type === 'string') {
                if (value.startsWith('http')) {
                return (
                    <a href={value} target="_blank" rel="noopener noreferrer" className="text-green-400 underline hover:text-green-300 break-all">
                    "{value}"
                    </a>
                );
                }
                return <span className="text-green-400 break-all">"{value}"</span>;
            }

            return <span className="text-gray-300">{String(value)}</span>;
        };

        // --- Component: Tree Node ---
        const TreeNode = ({ name, value, depth = 0, isLast, isIndex }) => {
            const [expanded, setExpanded] = useState(true);

            const isObject = value !== null && typeof value === 'object';
            const isArray = Array.isArray(value);
            const isEmpty = isObject && Object.keys(value).length === 0;

            const toggle = () => setExpanded(!expanded);
            const paddingLeft = `${depth * 1.5}rem`;

            if (!isObject) {
                return (
                <div
                    className="flex items-start py-1 hover:bg-slate-800/50 rounded px-2 font-mono text-sm transition-colors"
                    style={{ paddingLeft }}
                >
                    <span className="text-slate-400 mr-2 shrink-0 select-none">
                    {isIndex ? (
                        <span className="text-slate-600 text-xs mr-2 font-sans opacity-70 w-4 text-right inline-block">
                        {name}
                        </span>
                    ) : (
                        name !== undefined && <span className="text-purple-300">{name}: </span>
                    )}
                    </span>
                    <ValueRenderer value={value} />
                    {!isLast && <span className="text-slate-500">,</span>}
                </div>
                );
            }

            const keys = Object.keys(value);
            const itemCount = keys.length;

            return (
                <div className="font-mono text-sm">
                <div
                    className="flex items-center py-1 hover:bg-slate-800/50 rounded px-2 cursor-pointer group transition-colors select-none"
                    style={{ paddingLeft }}
                    onClick={toggle}
                >
                    <span className="mr-1 text-slate-500 group-hover:text-white transition-colors">
                    {expanded ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
                    </span>

                    {isIndex ? (
                        <span className="text-slate-600 text-xs mr-2 font-sans opacity-70 w-4 text-right inline-block">
                        {name}
                        </span>
                    ) : (
                    <span className="text-purple-300 mr-2">
                        {name !== undefined && `${name}: `}
                    </span>
                    )}

                    <span className="text-slate-400 flex items-center gap-2">
                    {isArray ? <List size={14} className="text-blue-400" /> : <Braces size={14} className="text-yellow-400" />}
                    {expanded ? (
                        <span>
                        {isArray ? '[' : '{'}
                        </span>
                    ) : (
                        <span className="opacity-70">
                        {isArray ? `Array(${itemCount})` : `Object{${itemCount}}`}
                        </span>
                    )}
                    </span>
                </div>

                {expanded && !isEmpty && (
                    <div>
                    {keys.map((key, index) => (
                        <TreeNode
                        key={key}
                        name={key}
                        isIndex={isArray}
                        value={value[key]}
                        depth={depth + 1}
                        isLast={index === keys.length - 1}
                        />
                    ))}
                    <div
                        className="py-1 px-2 text-slate-400 hover:bg-slate-800/50 rounded"
                        style={{ paddingLeft }}
                    >
                        {isArray ? ']' : '}'}{!isLast && ','}
                    </div>
                    </div>
                )}

                {expanded && isEmpty && (
                    <div
                    className="py-1 px-2 text-slate-500 italic"
                    style={{ paddingLeft: `${(depth + 1) * 1.5}rem` }}
                    >
                    (empty)
                    </div>
                )}
                {expanded && isEmpty && (
                    <div
                        className="py-1 px-2 text-slate-400"
                        style={{ paddingLeft }}
                    >
                    {isArray ? ']' : '}'}{!isLast && ','}
                    </div>
                )}
                </div>
            );
        };

        // --- Main Application ---
        const App = () => {
            // NOTE: No need for useScript hook anymore, jsyaml is loaded in head

            const [input, setInput] = useState('{\n  "projectName": "JSON-YAML-Viewer",\n  "version": 1.0,\n  "features": [\n    "Live Parsing",\n    "Syntax Highlighting",\n    "Tree View"\n  ],\n  "settings": {\n    "theme": "Dark",\n    "autoExpand": true\n  }\n}');
            const [parsedData, setParsedData] = useState(null);
            const [error, setError] = useState(null);
            const [format, setFormat] = useState('JSON');
            const [copied, setCopied] = useState(false);
            const [showInput, setShowInput] = useState(true);

            const parseInput = useCallback((text) => {
                if (!text.trim()) {
                    setParsedData(null);
                    setError(null);
                    setFormat('Empty');
                    return;
                }

                try {
                    const json = JSON.parse(text);
                    setParsedData(json);
                    setError(null);
                    setFormat('JSON');
                    return;
                } catch (jsonErr) {
                    if (window.jsyaml) {
                        try {
                            const yaml = window.jsyaml.load(text);
                            if (typeof yaml === 'object' && yaml !== null) {
                                setParsedData(yaml);
                                setError(null);
                                setFormat('YAML');
                                return;
                            }
                        } catch (yamlErr) {
                            setError(jsonErr.message);
                        }
                    } else {
                        setError("Invalid JSON (YAML parser not loaded)");
                    }
                }
            }, []);

            useEffect(() => {
                const timer = setTimeout(() => {
                    parseInput(input);
                }, 300);
                return () => clearTimeout(timer);
            }, [input, parseInput]);

            const handleCopy = () => {
                navigator.clipboard.writeText(input);
                setCopied(true);
                setTimeout(() => setCopied(false), 2000);
            };

            const handleFormat = () => {
                if (parsedData) {
                    setInput(JSON.stringify(parsedData, null, 2));
                }
            };

            return (
                <div className="flex flex-col h-screen bg-slate-950 text-slate-200 overflow-hidden font-sans">
                {/* Header */}
                <header className="flex items-center justify-between px-6 py-4 bg-slate-900 border-b border-slate-800 shadow-md z-10">
                    <div className="flex items-center gap-3">
                    <button
                        onClick={() => setShowInput(!showInput)}
                        className={`p-2 rounded-lg transition-colors border border-transparent ${
                        showInput
                            ? 'bg-slate-800 text-slate-300 hover:text-white hover:bg-slate-700'
                            : 'bg-indigo-600 text-white border-indigo-500 shadow-sm'
                        }`}
                        title={showInput ? "Hide Input" : "Show Input"}
                    >
                        <PanelLeft size={20} />
                    </button>

                    <div className="p-2 bg-indigo-600 rounded-lg">
                        <Braces className="text-white" size={24} />
                    </div>
                    <div>
                        <h1 className="font-bold text-lg text-white tracking-tight">Structura</h1>
                        <p className="text-xs text-slate-400">JSON & YAML Visualizer</p>
                    </div>
                    </div>

                    <div className="flex items-center gap-4">
                    <div className={`px-3 py-1 rounded-full text-xs font-bold border ${
                        error ? 'border-red-900 bg-red-900/20 text-red-400' :
                        format === 'JSON' ? 'border-blue-900 bg-blue-900/20 text-blue-400' :
                        format === 'YAML' ? 'border-purple-900 bg-purple-900/20 text-purple-400' :
                        'border-slate-700 bg-slate-800 text-slate-500'
                    }`}>
                        {error ? 'INVALID' : format}
                    </div>
                    </div>
                </header>

                {/* Main Content */}
                <main className="flex flex-col md:flex-row flex-1 overflow-hidden">

                    {/* Editor Pane */}
                    {showInput && (
                    <div className="flex flex-col w-full md:w-1/2 border-b md:border-b-0 md:border-r border-slate-800 bg-slate-900/50">
                        <div className="flex items-center justify-between px-4 py-2 bg-slate-900 border-b border-slate-800">
                        <span className="text-xs font-semibold text-slate-400 uppercase tracking-wider flex items-center gap-2">
                            <FileJson size={14} /> Input
                        </span>
                        <div className="flex gap-2">
                            <button
                            onClick={handleFormat}
                            disabled={!!error || !parsedData}
                            className="p-1.5 hover:bg-slate-800 text-slate-400 hover:text-white rounded transition-colors"
                            title="Format JSON"
                            >
                            <span className="text-xs font-mono font-bold">{'{}'}</span>
                            </button>
                            <button
                            onClick={() => setInput('')}
                            className="p-1.5 hover:bg-slate-800 text-slate-400 hover:text-red-400 rounded transition-colors"
                            title="Clear"
                            >
                            <Trash2 size={16} />
                            </button>
                            <button
                            onClick={handleCopy}
                            className="p-1.5 hover:bg-slate-800 text-slate-400 hover:text-white rounded transition-colors relative"
                            title="Copy Raw"
                            >
                            {copied ? <Check size={16} className="text-green-500" /> : <Copy size={16} />}
                            </button>
                        </div>
                        </div>
                        <div className="relative flex-1">
                        <textarea
                            className="w-full h-full bg-slate-950 p-4 font-mono text-sm resize-none focus:outline-none focus:ring-1 focus:ring-indigo-500/50 text-slate-300 custom-scrollbar"
                            value={input}
                            onChange={(e) => setInput(e.target.value)}
                            placeholder="Paste your JSON or YAML here..."
                            spellCheck="false"
                        />
                        </div>
                    </div>
                    )}

                    {/* Viewer Pane */}
                    <div className={`flex flex-col ${showInput ? 'w-full md:w-1/2' : 'w-full'} bg-slate-950 transition-all duration-300 ease-in-out`}>
                    <div className="flex items-center justify-between px-4 py-2 bg-slate-900 border-b border-slate-800">
                        <span className="text-xs font-semibold text-slate-400 uppercase tracking-wider flex items-center gap-2">
                        <List size={14} /> Tree View
                        </span>
                    </div>

                    <div className="flex-1 overflow-auto p-4 custom-scrollbar">
                        {error ? (
                        <div className="flex flex-col items-center justify-center h-full text-center p-8 opacity-70">
                            <AlertCircle size={48} className="text-red-500 mb-4" />
                            <h3 className="text-lg font-medium text-red-400 mb-2">Parse Error</h3>
                            <p className="text-sm text-slate-500 font-mono break-words w-full max-w-md bg-slate-900 p-4 rounded border border-slate-800">
                            {error}
                            </p>
                        </div>
                        ) : parsedData ? (
                        <div className="w-full">
                            <TreeNode value={parsedData} isLast={true} />
                        </div>
                        ) : (
                        <div className="flex flex-col items-center justify-center h-full text-slate-600">
                            <p>Waiting for input...</p>
                        </div>
                        )}
                    </div>
                    </div>
                </main>

                {/* Footer/Status Bar */}
                <footer className="bg-slate-900 border-t border-slate-800 px-4 py-1 text-xs text-slate-500 flex justify-between">
                    <div>
                    {parsedData && (
                        <span>
                        {Array.isArray(parsedData)
                            ? `Root: Array (${parsedData.length} items)`
                            : typeof parsedData === 'object'
                            ? `Root: Object (${Object.keys(parsedData).length} keys)`
                            : `Root: ${typeof parsedData}`}
                        </span>
                    )}
                    </div>
                    <div className="flex gap-4">
                    <span>Ln {input.split('\n').length}</span>
                    </div>
                </footer>

                <style>{`
                    .custom-scrollbar::-webkit-scrollbar {
                    width: 10px;
                    height: 10px;
                    }
                    .custom-scrollbar::-webkit-scrollbar-track {
                    background: #0f172a;
                    }
                    .custom-scrollbar::-webkit-scrollbar-thumb {
                    background: #334155;
                    border-radius: 5px;
                    border: 2px solid #0f172a;
                    }
                    .custom-scrollbar::-webkit-scrollbar-thumb:hover {
                    background: #475569;
                    }
                `}</style>
                </div>
            );
        };

        const root = createRoot(document.getElementById('root'));
        root.render(<App />);
    </script>
</body>
</html>