88 lines
2.4 KiB
Markdown
88 lines
2.4 KiB
Markdown
# go-multicodec
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[](https://github.com/RichardLitt/standard-readme)
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> Generated Go constants for the [multicodec table](https://github.com/multiformats/multicodec) used by the [multiformats](https://github.com/multiformats/multiformats) projects.
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## Table of Contents
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- [Install](#install)
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- [Usage](#usage)
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- [Generator](#generator)
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- [Maintainers](#maintainers)
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- [Contribute](#contribute)
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- [License](#license)
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## Install
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`go-multicodec` is a standard Go module:
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go get github.com/multiformats/go-multicodec
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## Type
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`Code` describes an integer reserved in the multicodec table, defined at [multiformats/multicodec/table.csv](https://github.com/multiformats/multicodec/blob/master/table.csv).
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```go
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type Code uint64
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```
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## Usage
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### Importing Code constant
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```go
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package main
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import "github.com/multiformats/go-multicodec"
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func main() {
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code := multicodec.Sha2_256 // Code
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name := multicodec.Sha2_256.String()
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}
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```
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The corresponding `name` value for each codec from the [multicodecs table](https://raw.githubusercontent.com/multiformats/multicodec/master/table.csv) can be accessed via its `String` method. For example, `multicodec.Sha2_256.String()` will return `sha2-256`.
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### Code from string
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```go
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var multicodec.Code code
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err := code.Set("libp2p-key")
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```
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### Code from uint64
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```go
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rawCode := multicodec.Code(0x55)
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```
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## Generator
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To generate the constants yourself:
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git clone https://github.com/multiformats/go-multicodec
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cd go-multicodec
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git submodule init && git submodule update
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go generate
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Note: You may need to install `stringer` via `go install golang.org/x/tools/cmd/stringer`.
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## Maintainers
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[@mvdan](https://github.com/mvdan).
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## Contribute
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Contributions welcome. Please check out [the issues](https://github.com/multiformats/go-multicodec/issues).
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Check out our [contributing document](https://github.com/multiformats/multiformats/blob/master/contributing.md) for more information on how we work, and about contributing in general. Please be aware that all interactions related to multiformats are subject to the IPFS [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md).
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Small note: If editing the README, please conform to the [standard-readme](https://github.com/RichardLitt/standard-readme) specification.
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## License
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SPDX-License-Identifier: Apache-2.0 OR MIT
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