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https://github.com/xoofx/Tomlyn

Tomlyn is a TOML parser, validator and authoring library for .NET Framework and .NET Core
https://github.com/xoofx/Tomlyn

csharp dotnet dotnet-core toml toml-parser toml-validation

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Tomlyn is a TOML parser, validator and authoring library for .NET Framework and .NET Core

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# Tomlyn [![Build Status](https://github.com/xoofx/Tomlyn/workflows/ci/badge.svg?branch=main)](https://github.com/xoofx/Tomlyn/actions) [![Coverage Status](https://coveralls.io/repos/github/xoofx/Tomlyn/badge.svg?branch=main)](https://coveralls.io/github/xoofx/Tomlyn?branch=main) [![NuGet](https://img.shields.io/nuget/v/Tomlyn.svg)](https://www.nuget.org/packages/Tomlyn/)

Tomlyn is a [TOML](https://toml.io/en/) parser, validator and authoring library for .NET Framework and .NET Core.

## What is TOML?

> **_A config file format for humans._**
> _TOML aims to be a minimal configuration file format that's easy to read due to obvious semantics. TOML is designed to map unambiguously to a hash table. TOML should be easy to parse into data structures in a wide variety of languages._

- See the official website https://toml.io/en/ for more details.
- Example and specifications are available at [TOML v1.0.0](https://toml.io/en/v1.0.0)

## Features

- Very fast parser, GC friendly.
- Compatible with the latest [TOML v1.0.0 specs](https://toml.io/en/v1.0.0).
- Allow to map a TOML string to a default runtime model via `Toml.ToModel(string)`
- Allow to map a TOML string to a custom runtime model via `Toml.ToModel(string)`
- Very convenient for loading custom configurations for example.
- Allow to generate a TOML string from a runtime model via `string Toml.FromModel(object)`
- Preserve comments, by default with the default runtime model, or by implementing the `ITomlMetadataProvider`.
- Allow to parse to a `DocumentSyntax` via `Toml.Parse(string)`.
- Preserve all spaces, new line, comments but also invalid characters/tokens.
- Can roundtrip to text with exact representation.
- Provides a validator with the `Toml.Validate` method.
- Supports for .NET Standard 2.0+ and provides an API with nullable annotations.

## Documentation

See the [documentation](https://github.com/xoofx/Tomlyn/blob/main/doc/readme.md) for more details.

## Install

Tomlyn is delivered as a [NuGet Package](https://www.nuget.org/packages/Tomlyn/).

## Usage

```c#
var toml = @"global = ""this is a string""
# This is a comment of a table
[my_table]
key = 1 # Comment a key
value = true
list = [4, 5, 6]
";

// Parse the TOML string to the default runtime model `TomlTable`
var model = Toml.ToModel(toml);
// Fetch the string
var global = (string)model["global"]!;
// Prints: found global = "this is a string"
Console.WriteLine($"found global = \"{global}\"");
// Generates a TOML string from the model
var tomlOut = Toml.FromModel(model);
// Output the generated TOML
Console.WriteLine(tomlOut);
```

This will print the original TOML by preserving most the comments:

```toml
global = "this is a string"
# This is a comment of a table
[my_table]
key = 1 # Comment a key
value = true
list = [4, 5, 6]
```

> NOTICE: By default, when mapping to a custom model, Tomlyn is using the PascalToSnakeCase naming convention (e.g `ThisIsFine` to `this_is_fine`).
> This behavior can be changed by overriding the `TomlModelOptions.ConvertPropertyName` delegate.

## License

This software is released under the [BSD-Clause 2 license](https://opensource.org/licenses/BSD-2-Clause).

## Credits

Modified version of the logo `Thor` by [Mike Rowe](https://thenounproject.com/itsmikerowe/) from the Noun Project (Creative Commons)

## Author

Alexandre Mutel aka [xoofx](http://xoofx.github.io).