U8XmlParser 1.0.1

U8XmlParser

High performance, thread-safe and IL2CPP-safe C# xml parser.

U8XmlParser is faster than any other xml libraries. (See the following benchmark for more info)

Install

For .NET

.net standard2.0, 2.1, .net framework4.8, .net core3.1, .net5 are supported.

Install from Nuget package

$ dotnet add package U8XmlParser

For Unity

If Unity 2020 or newer, install the package from UPM by git URL.

git URL: (https://github.com/ikorin24/U8XmlParser.git?path=src/U8XmlParserUnity/Assets/Plugins#v1.0.1)

For Unity 2019 or older, add the following libraries built for .net standard2.0 to your project. You can get them at the release page.

• U8XmlParser.dll (built for .net standard 2.0)
• System.Buffers.dll
• System.Memory.dll
• System.Runtime.CompilerServices.Unsafe.dll

How to Build

It requires dotnet cli tools. (or Visual Studio)

$ git clone https://github.com/ikorin24/U8XmlParser.git
$ cd U8XmlParser
$ dotnet src/U8XmlParser/U8XmlParser.csproj -c Release

How to Use

General usage

/* ------- your_file.xml ----------

<?xml version="1.0" encoding="UTF-8">
<SomeData>
    <Data aa="20">bbb</Data>
    <Data aa="30">ccc</Data>
</SomeData>

----------------------------------- */

// using System.IO;
// using U8Xml;

using (Stream stream = File.OpenRead("your_file.xml"))
using (XmlObject xml = XmlParser.Parse(stream))
{
    XmlNode root = xml.Root;
    string rootName = root.Name.ToString();         // "SomeData"

    // node
    XmlNode child = root.Children.First();
    string childName = child.Name.ToString();       // "Data"
    string innerText = child.InnerText.ToString();  // "bbb"
    
    // attribute
    XmlAttribute attr = child.Attributes.First();
    string attrName = attr.Name.ToString();         // "aa"
    int attrValue = attr.Value.ToInt32();           // 20

    // children nodes enumeration
    foreach(XmlNode node in root.Children)
    {
        // do something
    }
}
// *** DO NOT use any object from the parser. ***
// XmlObject, XmlNode, RawString, etc... are no longer accessible here.
// Their all memories are released when XmlObject.Dispose() called !!
// They must be evaluated and converted to string, int, and so on.

Entity resolving

Some xml has DTD; Document Type Declaration, and it can contain Entity Declaration. Entity defines alias of string in the xml. (For example, 'lt' is defined as alias of '<' by default. We have to resolve it when appears < in xml.)

/* ------- your_file.xml ----------

<?xml version="1.0" encoding="UTF-8">
<SomeData>
    &lt;foo&gt;
</SomeData>

----------------------------------- */

// using System.IO;
// using U8Xml;

using (Stream stream = File.OpenRead("your_file.xml"))
using (XmlObject xml = XmlParser.Parse(stream))
{
    RawString innerText = xml.Root.InnerText;   // "&lt;foo&gt;"
    XmlEntityTable entities = xml.EntityTable;
    string resolvedText = entities.ResolveToString(innerText);  // "<foo>"
}

Benchmark

Benchmarking Yourself

$ cd src/Benchmark
$ dotnet run -c Release -f net5.0

Results (on .net5)

Benchmarked by BenchmarkDotNet.

Large XML File (about 1MB)

BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-10700 CPU 2.90GHz, 1 CPU, 16 logical and 8 physical cores
.NET Core SDK=5.0.202
  [Host]     : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT
  Job-KJNRQJ : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT

Jit=RyuJit  Platform=X64  InvocationCount=1  
IterationCount=100  UnrollFactor=1  

Samll XML File (about 100KB)

BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-10700 CPU 2.90GHz, 1 CPU, 16 logical and 8 physical cores
.NET Core SDK=5.0.202
  [Host]     : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT
  Job-FURHHZ : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT

Jit=RyuJit  Platform=X64  InvocationCount=1  
IterationCount=100  UnrollFactor=1  

License

Author: ikorin24, and all contributors.

This repository is licensed under MIT.

See Licenses of other libraries this repository contains from here.