Create drive.py

utils/drive.py

@@ -0,0 +1,110 @@
+# URL helpers, see https://github.com/NVlabs/stylegan
+# ------------------------------------------------------------------------------------------
+
+import requests
+import html
+import hashlib
+import gdown
+import glob
+import os
+import io
+from typing import Any
+import re
+import uuid
+
+weight_dic = {'afhqwild.pt': 'https://drive.google.com/file/d/14OnzO4QWaAytKXVqcfWo_o2MzoR4ygnr/view?usp=sharing',
+              'afhqdog.pt': 'https://drive.google.com/file/d/16v6jPtKVlvq8rg2Sdi3-R9qZEVDgvvEA/view?usp=sharing',
+              'afhqcat.pt': 'https://drive.google.com/file/d/1HXLER5R3EMI8DSYDBZafoqpX4EtyOf2R/view?usp=sharing',
+              'ffhq.pt': 'https://drive.google.com/file/d/1AT6bNR2ppK8f2ETL_evT27f3R_oyWNHS/view?usp=sharing',
+              'metfaces.pt': 'https://drive.google.com/file/d/16wM2PwVWzaMsRgPExvRGsq6BWw_muKbf/view?usp=sharing',
+              'seg.pth': 'https://drive.google.com/file/d/1lIKvQaFKHT5zC7uS4p17O9ZpfwmwlS62/view?usp=sharing'}
+
+
+def download_weight(weight_path):
+    gdown.download(weight_dic[os.path.basename(weight_path)],
+                   output=weight_path, fuzzy=True)
+
+
+def is_url(obj: Any) -> bool:
+    """Determine whether the given object is a valid URL string."""
+    if not isinstance(obj, str) or not "://" in obj:
+        return False
+    try:
+        res = requests.compat.urlparse(obj)
+        if not res.scheme or not res.netloc or not "." in res.netloc:
+            return False
+        res = requests.compat.urlparse(requests.compat.urljoin(obj, "/"))
+        if not res.scheme or not res.netloc or not "." in res.netloc:
+            return False
+    except:
+        return False
+    return True
+
+
+def open_url(url: str, cache_dir: str = None, num_attempts: int = 10, verbose: bool = True,
+             return_path: bool = False) -> Any:
+    """Download the given URL and return a binary-mode file object to access the data."""
+    assert is_url(url)
+    assert num_attempts >= 1
+
+    # Lookup from cache.
+    url_md5 = hashlib.md5(url.encode("utf-8")).hexdigest()
+    if cache_dir is not None:
+        cache_files = glob.glob(os.path.join(cache_dir, url_md5 + "_*"))
+        if len(cache_files) == 1:
+            if (return_path):
+                return cache_files[0]
+            else:
+                return open(cache_files[0], "rb")
+
+    # Download.
+    url_name = None
+    url_data = None
+    with requests.Session() as session:
+        if verbose:
+            print("Downloading %s ..." % url, end="", flush=True)
+        for attempts_left in reversed(range(num_attempts)):
+            try:
+                with session.get(url) as res:
+                    res.raise_for_status()
+                    if len(res.content) == 0:
+                        raise IOError("No data received")
+
+                    if len(res.content) < 8192:
+                        content_str = res.content.decode("utf-8")
+                        if "download_warning" in res.headers.get("Set-Cookie", ""):
+                            links = [html.unescape(link) for link in content_str.split('"') if
+                                     "export=download" in link]
+                            if len(links) == 1:
+                                url = requests.compat.urljoin(url, links[0])
+                                raise IOError("Google Drive virus checker nag")
+                        if "Google Drive - Quota exceeded" in content_str:
+                            raise IOError("Google Drive quota exceeded")
+
+                    match = re.search(r'filename="([^"]*)"', res.headers.get("Content-Disposition", ""))
+                    url_name = match[1] if match else url
+                    url_data = res.content
+                    if verbose:
+                        print(" done")
+                    break
+            except:
+                if not attempts_left:
+                    if verbose:
+                        print(" failed")
+                    raise
+                if verbose:
+                    print(".", end="", flush=True)
+
+    # Save to cache.
+    if cache_dir is not None:
+        safe_name = re.sub(r"[^0-9a-zA-Z-._]", "_", url_name)
+        cache_file = os.path.join(cache_dir, url_md5 + "_" + safe_name)
+        temp_file = os.path.join(cache_dir, "tmp_" + uuid.uuid4().hex + "_" + url_md5 + "_" + safe_name)
+        os.makedirs(cache_dir, exist_ok=True)
+        with open(temp_file, "wb") as f:
+            f.write(url_data)
+        os.replace(temp_file, cache_file)  # atomic
+        if (return_path): return cache_file
+
+    # Return data as file object.
+    return io.BytesIO(url_data)