resid

Description

Resid is a python library for analysing resource identifiers for extracting valuable information. This can include guessing content type, encoding, checking if contents are available locally or if it resembles file path, url, etc.

In this library, source is defined as similar to uri but source can be anything including file object. 'source' is defined as anything that can be used to access/locate contents. That can include url, file path, file object and others depending on whether they can be used to access data or get information about it.

Any object can be used as source but not all of them will be supported. This library helps in extracting information about source such as whether source is supported or guessing its content type.

Install

Enter this on your command-line application:

pip install resid

resid -> Resource Identifier

Usage

Supported source is source that is guaranteed to be supported while resembled source is not guaranteed.

>>> import resid
>>>
>>> resid.is_supported("https://stackoverflow.com/")
True
>>> resid.is_supported("not_exists.txt")
False
>>> resid.is_resembled("not_exists.txt")
True
>>> resid.is_supported(io.BytesIO())
True
>>> resid.is_resembled(object)
False

Source can be checked to see if its url, file path, etc using few functions which may return None if source is not supported.

>>> resid.is_url("https://example.com/")
True
>>> resid.is_web_url("https://example.com/")
True
>>> resid.is_file_path("https://example.com/")
False
>>> resid.is_file_path("sample.txt")
True
>>> resid.is_file_path(object)
False
>>> resid.is_file_like(io.BytesIO())
True
>>> resid.is_path_like(pathlib.Path("sample.txt"))
True

Content type of source can be guessed from source itself especially file paths and urls for webpages.

>>> resid.guess_content_type("sample.txt")
'text/plain'
>>> resid.guess_content_type("https://example.com/")
'text/html'
>>> resid.guess_content_type("https://example.com/files/sample.pdf")
'application/pdf'
>>> resid.guess_content_type(open("sample.txt"))
'text/plain'

It may be important to know if source contents are hosted locally or remotely if intending to fetch contents.

>>> resid.locally_hosted("sample.txt")
True
>>> resid.locally_hosted("https://example.com/")
False
>>> resid.locally_hosted("http://127.0.0.1/")
True
>>> resid.guess_content_type(open("sample.txt"))
True
>>> resid.remotely_hosted("sample.txt")
False
>>> resid.remotely_hosted("https://example.com/")
True
>>> resid.remotely_hosted("file:///home/sample.txt")
False

String version of source can be created from path part source if exists.

>>> resid.to_string(open("setup.py"))
'setup.py'
>>> resid.to_string(pathlib.Path("sample.txt"))
'sample.txt'
>>> resid.to_string("https://example.com/")
'https://example.com/'

More extensions, content types and encodings can be added through mimetypes module.

>>> import mimetypes
>>>
>>> mimetypes.common_types[".jpg"] = "image/jpg"
>>> mimetypes.encodings_map[".gz"] = "gzip" 

License

MIT license