From 5b0e28f40179545c90c2d14d10e839e37cbc4630 Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Thu, 4 Sep 2025 17:19:02 +0800
Subject: [PATCH] bugfix

---
 appPublic/base64_to_file.py | 81 +++++++++++++++++++------------------
 1 file changed, 41 insertions(+), 40 deletions(-)

diff --git a/appPublic/base64_to_file.py b/appPublic/base64_to_file.py
index 1dba366..d647869 100644
--- a/appPublic/base64_to_file.py
+++ b/appPublic/base64_to_file.py
@@ -1,49 +1,50 @@
 import os
+import re
 import base64
 from appPuyblic.uniqueID import getID
 
-def getFilenameFromBase64(base64String) {
+MIME_EXT = {
+    # 图片
+    "image/jpeg": "jpg",
+    "image/png": "png",
+    "image/gif": "gif",
+    "image/webp": "webp",
+    "image/bmp": "bmp",
+    "image/svg+xml": "svg",
+    "image/x-icon": "ico",
+    "image/tiff": "tiff",
+
+    # 音频
+    "audio/mpeg": "mp3",
+    "audio/wav": "wav",
+    "audio/ogg": "ogg",
+    "audio/webm": "weba",
+    "audio/aac": "aac",
+    "audio/flac": "flac",
+    "audio/mp4": "m4a",
+    "audio/3gpp": "3gp",
+
+    # 视频
+    "video/mp4": "mp4",
+    "video/webm": "webm",
+    "video/ogg": "ogv",
+    "video/x-msvideo": "avi",
+    "video/quicktime": "mov",
+    "video/x-matroska": "mkv",
+    "video/3gpp": "3gp",
+    "video/x-flv": "flv",
+}
+
+def getFilenameFromBase64(base64String):
 	// Extract MIME type from data URL
-	const mimeType = base64String.match(/data:([a-zA-Z0-9]+\/[a-zA-Z0-9-.+]+).*,.*/)
-	ext = ''
-	if (mimeType && mimeType[1]) {
-		const mime = mimeType[1]
-		const mimeToExtension = {
-			# 图片
-			"image/jpeg": "jpg",
-			"image/png": "png",
-			"image/gif": "gif",
-			"image/webp": "webp",
-			"image/bmp": "bmp",
-			"image/svg+xml": "svg",
-			"image/x-icon": "ico",
-			"image/tiff": "tiff",
-
-			# 音频
-			"audio/mpeg": "mp3",
-			"audio/wav": "wav",
-			"audio/ogg": "ogg",
-			"audio/webm": "weba",
-			"audio/aac": "aac",
-			"audio/flac": "flac",
-			"audio/mp4": "m4a",
-			"audio/3gpp": "3gp",
-
-			# 视频
-			"video/mp4": "mp4",
-			"video/webm": "webm",
-			"video/ogg": "ogv",
-			"video/x-msvideo": "avi",
-			"video/quicktime": "mov",
-			"video/x-matroska": "mkv",
-			"video/3gpp": "3gp",
-			"video/x-flv": "flv",
-		}
-
-		ext = mimeToExtension.get(mime, '')
-	}
+	mimeType = base64String.match(/data:([a-zA-Z0-9]+\/[a-zA-Z0-9-.+]+).*,.*/)
+	match = re.match(r"data:(.*?);base64,(.*)", base64String)
+	if not match:
+        raise ValueError("不是合法的 base64 Data URL")
+	mime_type, b64_data = match.groups()
+	ext = MIME_EXT.get(mime_type, mime_type.split("/")[-1])
 	name = getID()
-	fname = f'{name}{ext}'
+	fname = f'{name}.{ext}'
 	return fname
 }