| import argparse | |
| from concurrent.futures import ThreadPoolExecutor | |
| import os | |
| import requests | |
| import shutil | |
| from tqdm import tqdm | |
| def get_image_ids(batch_id: str) -> list[str]: | |
| """A list of image IDs in the given batch""" | |
| response = requests.get(f"https://iiifintern.ra.se/arkis!{batch_id}/manifest") | |
| response.raise_for_status() | |
| response = response.json() | |
| return [item["id"].split("!")[1][:14] for item in response["items"]] | |
| def download_image(url: str, dest: str) -> None: | |
| """ | |
| Download an image | |
| Arguments: | |
| url: Image url | |
| dest: Destination file name | |
| """ | |
| response = requests.get(url, stream=True) | |
| with open(dest, "wb") as out_file: | |
| shutil.copyfileobj(response.raw, out_file) | |
| del response | |
| def download_image_by_image_id(image_id: str): | |
| """ | |
| Download the image with the given image ID | |
| Creates a directory named after the batch ID and saves the image in | |
| that directory. | |
| """ | |
| batch_id = image_id[:8] | |
| os.makedirs(batch_id, exist_ok=True) | |
| url = f"https://iiifintern.ra.se/arkis!{image_id}/full/max/0/default.jpg" | |
| dest = os.path.join(batch_id, image_id + ".jpg") | |
| download_image(url, dest) | |
| if __name__ == "__main__": | |
| parser = argparse.ArgumentParser(description="Download a batch of images by its batch ID") | |
| parser.add_argument("batch_id", help="batch ID of batch to download") | |
| parser.add_argument("--workers", default=5, help="number of concurrent workers") | |
| args = parser.parse_args() | |
| image_ids = get_image_ids(args.batch_id) | |
| with ThreadPoolExecutor(max_workers=args.workers) as executor: | |
| list(tqdm(executor.map(download_image_by_image_id, image_ids), total=len(image_ids), desc=f"Downloading {args.batch_id}")) |