Add naive_jq

README.md

@@ -19,6 +19,7 @@ Some code snippets that's hard to categorize. See READMEs under subfolders for d
 - `GM_config`: Simple config lib for Tampermonkey scripts.
 - `greasyfork_enhance`: Enhance your experience at Greasyfork.
 - `hover_card`: Get Github hovercard for given repo.
+- `naive_jq`: A naive implementation of `jq` in Node.js, only for quick testing.
 - `purlfy_for_tm`: The ultimate URL purifier - Tampermonkey version.
 - `sanitify_header_id`: Sanitify/Sanitize given string (header id) so that it is (hopefully) free of emojis, with its spaces replaced by `-`.
 - `scrollbar_mod`: Customize your scrollbar easily.

README_CN.md

@@ -19,6 +19,7 @@
 - `GM_config`: 简易的 Tampermonkey 脚本配置库。
 - `greasyfork_enhance`: 增进 Greasyfork 浏览体验。
 - `hover_card`: 获取 Github 仓库的悬停卡片。
+- `naive_jq`: 一个简单的 `jq` 的 Node.js 实现，仅用于快速测试。
 - `purlfy_for_tm`: 终极 URL 净化器 - Tampermonkey 版本。
 - `sanitify_header_id`: 格式化给定字符串（标题 ID），使其不含表情符号，空格被 `-` 替代。
 - `scrollbar_mod`: 轻松定制你的滚动条。

naive_jq/README.md

@@ -0,0 +1,38 @@
+# Naive jq
+
+A naive implementation of `jq` in Node.js, only for quick testing.
+
+## Usage
+
+```sh
+node jq.js [options] [input]
+```
+
+### Options
+
+- `-p, --path <path>`: Specify the JSON path to extract
+- `-h, --help`: Display this help message and exit
+
+### Positional Arguments
+
+- `input`: JSON data. If input is not provided, the script will read from standard input.
+
+## Examples
+
+### Read from command-line arguments
+
+```sh
+node jq.js -p .data '{"data": "hello"}'
+```
+
+### Read from standard input
+
+```sh
+cat example.json | node jq.js -p .data
+```
+
+### Display help message
+
+```sh
+node jq.js --help
+```

naive_jq/README_CN.md

@@ -0,0 +1,38 @@
+# 简易 jq
+
+一个在 Node.js 中实现的简易 `jq`，仅用于快速测试。
+
+## 使用方法
+
+```sh
+node jq.js [options] [input]
+```
+
+### 选项
+
+- `-p, --path <path>`: 指定要提取的 JSON 路径
+- `-h, --help`: 显示此帮助信息并退出
+
+### 位置参数
+
+- `input`: JSON 数据。如果未提供输入，脚本将从标准输入读取。
+
+## 示例
+
+### 从命令行参数读取
+
+```sh
+node jq.js -p .data '{"data": "hello"}'
+```
+
+### 从标准输入读取
+
+```sh
+cat example.json | node jq.js -p .data
+```
+
+### 显示帮助信息
+
+```sh
+node jq.js --help
+```

naive_jq/jq.js

@@ -0,0 +1,39 @@
+// A naive implementation of jq in Node.js, only for quick testing
+
+const fs = require("fs");
+const { parseArgs } = require("node:util");
+
+const options = {
+    path: {
+        type: "string",
+        short: "p"
+    },
+    help: {
+        type: "boolean",
+        short: "h"
+    }
+};
+const args = parseArgs({ options, allowPositionals: true, args: process.argv.slice(2) });
+
+if (args.values.help) {
+    console.log(`Usage: node jq.js [options] [input]
+Options:
+  -p, --path <path>    Specify the JSON path to extract
+  -h, --help           Show this help message and exit
+
+If no input is provided, the script will read from stdin.`);
+    process.exit(0);
+}
+
+const path = args.values.path ?? "";
+// console.log(args);
+
+const str = args.positionals[0] ?? fs.readFileSync(0, "utf-8");
+const data = JSON.parse(str.trim());
+// console.log(data);
+
+let result = data;
+for (const part of path.split(".").slice(1)) {
+    result = result?.[part];
+}
+console.log(result);