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توضیحات

Python implementation of EIP 1577 content hash

ویژگی	مقدار
سیستم عامل	-
نام فایل	content-hash-1.1.1
نام	content-hash
نسخه کتابخانه	1.1.1
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Filip Š
ایمیل نویسنده	projects@filips.si
آدرس صفحه اصلی	https://github.com/filips123/ContentHashPy/
آدرس اینترنتی	https://pypi.org/project/content-hash/
مجوز	MIT

ContentHash for Python ====================== [![version][icon-version]][link-pypi] [![downloads][icon-downloads]][link-pypi] [![license][icon-license]][link-license] [![python][icon-python]][link-python] [![linux build][icon-travis]][link-travis] [![windows build][icon-appveyor]][link-appveyor] [![coverage][icon-coverage]][link-coverage] [![quality][icon-quality]][link-quality] Python implementation of EIP 1577 content hash. ## Description This is a simple package made for encoding and decoding content hashes has specified in the [EIP 1577][link-eip-1577]. This package will be useful for every [Ethereum][link-ethereum] developer wanting to interact with [EIP 1577][link-eip-1577] compliant [ENS resolvers][link-resolvers]. For JavaScript implementation, see [`pldespaigne/content-hash`][link-javascript-implementation]. ## Installation ### Requirements ContentHash requires Python 3.5 or higher. ### From PyPI The recommended way to install ContentHash is from PyPI with PIP. ```bash pip install content-hash ``` ### From Source Alternatively, you can also install it from the source. ```bash git clone https://github.com/filips123/ContentHashPy.git cd ContentHashPy python setup.py install ``` ## Usage ### Supported Codecs The following codecs are currently supported: - `swarm-ns` - `ipfs-ns` - `ipns-ns` Every other codec supported by [`multicodec`][link-multicodec] will be encoded by default in `utf-8`. You can see the full list of the supported codecs [here][link-supported-codecs]. ### Getting Codec You can use a `get_codec` function to get codec from the content hash. It takes a content hash as a HEX string and returns the codec name. A content hash can be prefixed with a `0x`, but it's not mandatory. ```py import content_hash chash = 'bc037a716b746c776934666563766f367269' codec = content_hash.get_codec(chash) print(codec) # onion ``` ### Decoding You can use a `decode` function to decode a content hash. It takes a content hash as a HEX string and returns the decoded content as a string. A content hash can be prefixed with a `0x`, but it's not mandatory. ```py import content_hash chash = 'e3010170122029f2d17be6139079dc48696d1f582a8530eb9805b561eda517e22a892c7e3f1f' value = content_hash.decode(chash) print(value) # QmRAQB6YaCyidP37UdDnjFY5vQuiBrcqdyoW1CuDgwxkD4 ``` ### Encoding You can use an `encode` function to encode a content hash. It takes a supported codec as a string and a value as a string and returns the corresponding content hash as a HEX string. The output will not be prefixed with a `0x`. ```py import content_hash codec = 'swarm-ns' value = 'd1de9994b4d039f6548d191eb26786769f580809256b4685ef316805265ea162' chash = content_hash.encode(codec, value) print(chash) # e40101701b20d1de9994b4d039f6548d191eb26786769f580809256b4685ef316805265ea162 ``` ## Creating Codecs All supported codec profiles are available in [`content_hash/profiles/__init__.py`][link-profiles-file], in `PROFILES` dictionary. You need to add a new profile there. You only need to add a new profile if your codec encoding and decoding are different from `utf-8`. Each profile must have the same name as the corresponding codec in the `multicodec` library. A profile must also have decode and encode function. They should be passed as a string containing the name of the module for required decode or encode. All such modules are available in [`content_hash/decodes`][link-decodes-directory] and [`content_hash/encodes`][link-encodes-directory]. Each module name should describe it as much as possible. Its name can only contain valid characters for Python modules. Each decode module must have a `decode` function. It must be a function that takes a `bytes` input and returns a `str` result. Each encode module must have an `encode` function. It must be a function that takes a `str` input and returns a `bytes` result. All inputs and outputs must be the same as in the [JavaScript implementation][link-javascript-implementation]. Multiple profiles can share the same decodes and encodes. ## Versioning This library uses [SemVer][link-semver] for versioning. For the versions available, see [the tags][link-tags] on this repository. ## License This library is licensed under the MIT license. See the [LICENSE][link-license-file] file for details. [icon-version]: https://img.shields.io/pypi/v/content-hash.svg?style=flat-square&label=version [icon-downloads]: https://img.shields.io/pypi/dm/content-hash.svg?style=flat-square&label=downloads [icon-license]: https://img.shields.io/pypi/l/content-hash.svg?style=flat-square&label=license [icon-python]: https://img.shields.io/pypi/pyversions/content-hash?style=flat-square&label=python [icon-travis]: https://img.shields.io/travis/com/filips123/ContentHashPy.svg?style=flat-square&label=linux+build [icon-appveyor]: https://img.shields.io/appveyor/ci/filips123/ContentHashPy.svg?style=flat-square&label=windows+build [icon-coverage]: https://img.shields.io/scrutinizer/coverage/g/filips123/ContentHashPy.svg?style=flat-square&label=coverage [icon-quality]: https://img.shields.io/scrutinizer/g/filips123/ContentHashPy.svg?style=flat-square&label=quality [link-pypi]: https://pypi.org/project/content-hash/ [link-license]: https://choosealicense.com/licenses/mit/ [link-python]: https://python.org/ [link-travis]: https://travis-ci.com/filips123/ContentHashPy/ [link-appveyor]: https://ci.appveyor.com/project/filips123/ContentHashPy/ [link-coverage]: https://scrutinizer-ci.com/g/filips123/ContentHashPy/code-structure/ [link-quality]: https://scrutinizer-ci.com/g/filips123/ContentHashPy/ [link-semver]: https://semver.org/ [link-eip-1577]: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1577.md [link-ethereum]: https://www.ethereum.org/ [link-resolvers]: http://docs.ens.domains/en/latest/introduction.html [link-multicodec]: https://github.com/multiformats/multicodec/ [link-supported-codecs]: https://github.com/multiformats/multicodec/blob/master/table.csv [link-tags]: https://github.com/filips123/ContentHashPy/tags/ [link-license-file]: https://github.com/filips123/ContentHashPy/blob/master/LICENSE [link-profiles-file]: https://github.com/filips123/ContentHashPy/blob/master/content_hash/profiles/__init__.py [link-decodes-directory]: https://github.com/filips123/ContentHashPy/tree/master/content_hash/decodes/ [link-encodes-directory]: https://github.com/filips123/ContentHashPy/tree/master/content_hash/encodes/ [link-javascript-implementation]: https://github.com/pldespaigne/content-hash/

نیازمندی

مقدار	نام
<0.4.0,>=0.3.0	py-cid
<0.3.0,>=0.2.1	py-multicodec
<0.3.0,>=0.2.3	py-multihash
-	pylint
-	pytest
-	pytest-cov

زبان مورد نیاز

مقدار	نام
>= 3.5	Python

نحوه نصب

نصب پکیج whl content-hash-1.1.1:

pip install content-hash-1.1.1.whl

نصب پکیج tar.gz content-hash-1.1.1:

pip install content-hash-1.1.1.tar.gz