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# -*- coding: utf-8 -*- |
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from benedict.serializers import ( |
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get_format_by_path, |
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get_serializer_by_format, |
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) |
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# from botocore.exceptions import ClientError |
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from urllib.parse import urlparse |
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import boto3 |
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import fsutil |
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import tempfile |
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def autodetect_format(s): |
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if any([is_url(s), is_s3(s), is_filepath(s)]): |
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return get_format_by_path(s) |
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return None |
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def decode(s, format, **kwargs): |
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serializer = get_serializer_by_format(format) |
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if not serializer: |
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raise ValueError(f"Invalid format: {format}.") |
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options = kwargs.copy() |
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if format in ["b64", "base64"]: |
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options.setdefault("subformat", "json") |
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content = read_content(s, format, **options) |
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data = serializer.decode(content, **options) |
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return data |
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def encode(d, format, filepath=None, **kwargs): |
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serializer = get_serializer_by_format(format) |
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if not serializer: |
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raise ValueError(f"Invalid format: {format}.") |
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options = kwargs.copy() |
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content = serializer.encode(d, **options) |
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if filepath: |
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write_content(filepath, content, **options) |
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return content |
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def is_binary_format(format): |
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return format in [ |
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"xls", |
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"xlsx", |
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"xlsm", |
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] |
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def is_data(s): |
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return len(s.splitlines()) > 1 |
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def is_filepath(s): |
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return fsutil.is_file(s) or get_format_by_path(s) |
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def is_s3(s): |
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return s.startswith("s3://") and get_format_by_path(s) |
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def is_url(s): |
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return any([s.startswith(protocol) for protocol in ["http://", "https://"]]) |
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def parse_s3_url(url): |
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parsed = urlparse(url, allow_fragments=False) |
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bucket = parsed.netloc |
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key = parsed.path.lstrip("/") |
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if parsed.query: |
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key += "?" + self._parsed.query |
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url = parsed.geturl() |
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return { |
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"url": url, |
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"bucket": bucket, |
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"key": key, |
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} |
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def read_content(s, format=None, **options): |
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# s -> filepath or url or data |
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options.setdefault("format", format) |
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s = s.strip() |
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if is_data(s): |
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return s |
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elif is_url(s): |
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return read_content_from_url(s, **options) |
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elif is_s3(s): |
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return read_content_from_s3(s, **options) |
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elif is_filepath(s): |
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return read_content_from_file(s, **options) |
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# one-line data?! |
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return s |
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def read_content_from_file(filepath, format=None, **options): |
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binary_format = is_binary_format(format) |
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if binary_format: |
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return filepath |
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return fsutil.read_file(filepath) |
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def read_content_from_s3(url, s3_options, format=None, **options): |
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s3_url = parse_s3_url(url) |
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dirpath = tempfile.gettempdir() |
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filename = fsutil.get_filename(s3_url["key"]) |
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filepath = fsutil.join_path(dirpath, filename) |
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s3 = boto3.client("s3", **s3_options) |
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s3.download_file(s3_url["bucket"], s3_url["key"], filepath) |
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s3.close() |
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content = read_content_from_file(filepath, format, **options) |
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return content |
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def read_content_from_url(url, requests_options=None, format=None, **options): |
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requests_options = requests_options or {} |
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binary_format = is_binary_format(format) |
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if binary_format: |
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dirpath = tempfile.gettempdir() |
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filepath = fsutil.download_file(url, dirpath, **requests_options) |
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return filepath |
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return fsutil.read_file_from_url(url, **requests_options) |
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def write_content(filepath, content, **options): |
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if is_s3(filepath): |
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write_content_to_s3(filepath, content, **options) |
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else: |
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write_content_to_file(filepath, content, **options) |
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def write_content_to_file(filepath, content, **options): |
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fsutil.write_file(filepath, content) |
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def write_content_to_s3(url, content, s3_options, **options): |
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s3_url = parse_s3_url(url) |
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dirpath = tempfile.gettempdir() |
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filename = fsutil.get_filename(s3_url["key"]) |
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filepath = fsutil.join_path(dirpath, filename) |
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fsutil.write_file(filepath, content) |
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s3 = boto3.client("s3", **s3_options) |
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s3.upload_file(filepath, s3_url["bucket"], s3_url["key"]) |
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s3.close() |
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fsutil.remove_file(filepath) |
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fabiocaccamo /
python-benedict
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