从syzoj系统导入题目

hydro/lib/axios.js

@@ -0,0 +1,23 @@
+const axios = require('axios');
+
+async function get(url, options) {
+    let res;
+    try {
+        res = await axios.get(url, options);
+    } catch (e) {
+        res = e;
+    }
+    return res;
+}
+
+async function post(url, data, options) {
+    let res;
+    try {
+        res = await axios.post(url, data, options);
+    } catch (e) {
+        res = e;
+    }
+    return res;
+}
+
+module.exports = { get, post };

hydro/lib/download.js

@@ -0,0 +1,22 @@
+const axios = require('axios');
+const fs = require('fs');
+
+async function download(url, path, retry = 3) {
+    let r;
+    try {
+        const res = await axios.get(url, { responseType: 'stream' });
+        if (path) {
+            const w = await fs.createWriteStream(path);
+            res.data.pipe(w);
+            await new Promise((resolve, reject) => {
+                w.on('finish', resolve);
+                w.on('error', reject);
+            });
+        } else r = res.data;
+    } catch (e) {
+        if (retry) r = await download(url, path, retry - 1);
+        else throw e;
+    }
+    return r;
+}
+module.exports = download;