From fb2d7c642a286da9ff3cd64a4a48771a9f2cdd87 Mon Sep 17 00:00:00 2001
From: moto <855818+mthrok@users.noreply.github.com>
Date: Wed, 9 Dec 2020 10:32:00 -0500
Subject: [PATCH] Cherry-pick 'Disallow download=True in CommonVoice (#1076)'

---
 torchaudio/datasets/commonvoice.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/torchaudio/datasets/commonvoice.py b/torchaudio/datasets/commonvoice.py
index 963777cf38..a0f0b9ffea 100644
--- a/torchaudio/datasets/commonvoice.py
+++ b/torchaudio/datasets/commonvoice.py
@@ -180,6 +180,15 @@ def __init__(self,
             "romansh sursilvan": "rm-sursilv"
         }
 
+        if download:
+            raise RuntimeError(
+                "Common Voice dataset requires user agreement on the usage term, "
+                "and torchaudio no longer provides the download feature. "
+                "Please download the dataset manually and extract it in the root directory, "
+                "then provide the target language to `url` argument.")
+        if url not in languages:
+            raise ValueError(f"`url` must be one of available languages: {languages.keys()}")
+
         if url in languages:
             ext_archive = ".tar.gz"
             language = languages[url]