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depth.js
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| #! /usr/bin/env node | |
| var fs = require("fs") | |
| var files = process.argv.slice(2) | |
| if (!files.length) { | |
| console.log("USAGE: depth.js file1 [file2 ...]") | |
| } | |
| files.forEach(function(filename) { | |
| var object = JSON.parse(fs.readFileSync(filename)) | |
| console.log(filename, depth(object, "")) | |
| function depth(object, path) { | |
| var max = 0; | |
| var maxKey = "" | |
| for (var key in object) { | |
| if (typeof object == "object" && object.hasOwnProperty(key)) { | |
| var childDepth = depth(object[key], key) | |
| var localDepth = childDepth.depth + 1 | |
| if (localDepth > max) { | |
| max = localDepth | |
| maxKey = childDepth.key | |
| } | |
| } | |
| } | |
| return { depth: max, key : path + "." + maxKey } | |
| } | |
| }) |
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utility for measuring maximum depth of JSON files