|
|
from __future__ import print_function |
|
|
from pathlib import Path |
|
|
import tarfile |
|
|
import requests |
|
|
from warnings import warn |
|
|
from zipfile import ZipFile |
|
|
from bs4 import BeautifulSoup |
|
|
|
|
|
|
|
|
class GetData(object): |
|
|
"""A Python script for downloading CycleGAN or pix2pix datasets. |
|
|
|
|
|
Parameters: |
|
|
technique (str) -- One of: 'cyclegan' or 'pix2pix'. |
|
|
verbose (bool) -- If True, print additional information. |
|
|
|
|
|
Examples: |
|
|
>>> from util.get_data import GetData |
|
|
>>> gd = GetData(technique='cyclegan') |
|
|
>>> new_data_path = gd.get(save_path='./datasets') # options will be displayed. |
|
|
|
|
|
Alternatively, You can use bash scripts: 'scripts/download_pix2pix_model.sh' |
|
|
and 'scripts/download_cyclegan_model.sh'. |
|
|
""" |
|
|
|
|
|
def __init__(self, technique="cyclegan", verbose=True): |
|
|
url_dict = { |
|
|
"pix2pix": "http://efrosgans.eecs.berkeley.edu/pix2pix/datasets/", |
|
|
"cyclegan": "http://efrosgans.eecs.berkeley.edu/pix2pix/datasets", |
|
|
} |
|
|
self.url = url_dict.get(technique.lower()) |
|
|
self._verbose = verbose |
|
|
|
|
|
def _print(self, text): |
|
|
if self._verbose: |
|
|
print(text) |
|
|
|
|
|
@staticmethod |
|
|
def _get_options(r): |
|
|
soup = BeautifulSoup(r.text, "lxml") |
|
|
options = [h.text for h in soup.find_all("a", href=True) if h.text.endswith((".zip", "tar.gz"))] |
|
|
return options |
|
|
|
|
|
def _present_options(self): |
|
|
r = requests.get(self.url) |
|
|
options = self._get_options(r) |
|
|
print("Options:\n") |
|
|
for i, o in enumerate(options): |
|
|
print("{0}: {1}".format(i, o)) |
|
|
choice = input("\nPlease enter the number of the " "dataset above you wish to download:") |
|
|
return options[int(choice)] |
|
|
|
|
|
def _download_data(self, dataset_url, save_path): |
|
|
save_path = Path(save_path) |
|
|
if not save_path.is_dir(): |
|
|
save_path.mkdir(parents=True, exist_ok=True) |
|
|
|
|
|
base = Path(dataset_url).name |
|
|
temp_save_path = save_path / base |
|
|
|
|
|
with open(temp_save_path, "wb") as f: |
|
|
r = requests.get(dataset_url) |
|
|
f.write(r.content) |
|
|
|
|
|
if base.endswith(".tar.gz"): |
|
|
obj = tarfile.open(temp_save_path) |
|
|
elif base.endswith(".zip"): |
|
|
obj = ZipFile(temp_save_path, "r") |
|
|
else: |
|
|
raise ValueError("Unknown File Type: {0}.".format(base)) |
|
|
|
|
|
self._print("Unpacking Data...") |
|
|
obj.extractall(save_path) |
|
|
obj.close() |
|
|
temp_save_path.unlink() |
|
|
|
|
|
def get(self, save_path, dataset=None): |
|
|
""" |
|
|
|
|
|
Download a dataset. |
|
|
|
|
|
Parameters: |
|
|
save_path (str) -- A directory to save the data to. |
|
|
dataset (str) -- (optional). A specific dataset to download. |
|
|
Note: this must include the file extension. |
|
|
If None, options will be presented for you |
|
|
to choose from. |
|
|
|
|
|
Returns: |
|
|
save_path_full (str) -- the absolute path to the downloaded data. |
|
|
|
|
|
""" |
|
|
if dataset is None: |
|
|
selected_dataset = self._present_options() |
|
|
else: |
|
|
selected_dataset = dataset |
|
|
|
|
|
save_path_full = Path(save_path) / selected_dataset.split(".")[0] |
|
|
|
|
|
if save_path_full.is_dir(): |
|
|
warn(f"\n'{save_path_full}' already exists. Voiding Download.") |
|
|
else: |
|
|
self._print("Downloading Data...") |
|
|
url = f"{self.url}/{selected_dataset}" |
|
|
self._download_data(url, save_path=save_path) |
|
|
|
|
|
return save_path_full.resolve() |
|
|
|
