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| import io |
| import os |
| import zipfile |
|
|
| import numpy as np |
| from PIL import Image, ImageFile |
|
|
| ImageFile.LOAD_TRUNCATED_IMAGES = True |
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|
|
| def is_zip_path(img_or_path): |
| """judge if this is a zip path.""" |
| return '.zip@' in img_or_path |
|
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|
|
| class ZipReader(object): |
| """A class to read zipped files.""" |
| zip_bank = dict() |
|
|
| def __init__(self): |
| super(ZipReader, self).__init__() |
|
|
| @staticmethod |
| def get_zipfile(path): |
| zip_bank = ZipReader.zip_bank |
| if path not in zip_bank: |
| zfile = zipfile.ZipFile(path, 'r') |
| zip_bank[path] = zfile |
| return zip_bank[path] |
|
|
| @staticmethod |
| def split_zip_style_path(path): |
| pos_at = path.index('@') |
| assert pos_at != -1, "character '@' is not found from the given path '%s'" % path |
|
|
| zip_path = path[0:pos_at] |
| folder_path = path[pos_at + 1:] |
| folder_path = str.strip(folder_path, '/') |
| return zip_path, folder_path |
|
|
| @staticmethod |
| def list_folder(path): |
| zip_path, folder_path = ZipReader.split_zip_style_path(path) |
|
|
| zfile = ZipReader.get_zipfile(zip_path) |
| folder_list = [] |
| for file_foler_name in zfile.namelist(): |
| file_foler_name = str.strip(file_foler_name, '/') |
| if file_foler_name.startswith(folder_path) and \ |
| len(os.path.splitext(file_foler_name)[-1]) == 0 and \ |
| file_foler_name != folder_path: |
| if len(folder_path) == 0: |
| folder_list.append(file_foler_name) |
| else: |
| folder_list.append(file_foler_name[len(folder_path) + 1:]) |
|
|
| return folder_list |
|
|
| @staticmethod |
| def list_files(path, extension=None): |
| if extension is None: |
| extension = ['.*'] |
| zip_path, folder_path = ZipReader.split_zip_style_path(path) |
|
|
| zfile = ZipReader.get_zipfile(zip_path) |
| file_lists = [] |
| for file_foler_name in zfile.namelist(): |
| file_foler_name = str.strip(file_foler_name, '/') |
| if file_foler_name.startswith(folder_path) and \ |
| str.lower(os.path.splitext(file_foler_name)[-1]) in extension: |
| if len(folder_path) == 0: |
| file_lists.append(file_foler_name) |
| else: |
| file_lists.append(file_foler_name[len(folder_path) + 1:]) |
|
|
| return file_lists |
|
|
| @staticmethod |
| def read(path): |
| zip_path, path_img = ZipReader.split_zip_style_path(path) |
| zfile = ZipReader.get_zipfile(zip_path) |
| data = zfile.read(path_img) |
| return data |
|
|
| @staticmethod |
| def imread(path): |
| zip_path, path_img = ZipReader.split_zip_style_path(path) |
| zfile = ZipReader.get_zipfile(zip_path) |
| data = zfile.read(path_img) |
| try: |
| im = Image.open(io.BytesIO(data)) |
| except: |
| print('ERROR IMG LOADED: ', path_img) |
| random_img = np.random.rand(224, 224, 3) * 255 |
| im = Image.fromarray(np.uint8(random_img)) |
| return im |
|
|
