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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| using System; | ||
| using System.Globalization; | ||
| using System.IO; | ||
| using System.Text; | ||
| using System.Threading; | ||
| using System.Threading.Tasks; | ||
|
|
||
| namespace Cysharp.Text | ||
| { | ||
| /// <summary> | ||
| /// A <see cref="TextWriter"/> implementation that is backed with <see cref="Utf16ValueStringBuilder"/>. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// It's important to make sure the writer is always properly disposed. | ||
| /// </remarks> | ||
| public sealed class ZStringWriter : TextWriter | ||
| { | ||
| private Utf16ValueStringBuilder sb; | ||
| private bool isOpen; | ||
| private UnicodeEncoding encoding; | ||
|
|
||
| /// <summary> | ||
| /// Creates a new instance using <see cref="CultureInfo.CurrentCulture"/> as format provider. | ||
| /// </summary> | ||
| public ZStringWriter() : this(CultureInfo.CurrentCulture) | ||
| { | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Creates a new instance with given format provider. | ||
| /// </summary> | ||
| public ZStringWriter(IFormatProvider formatProvider) : base(formatProvider) | ||
| { | ||
| sb = ZString.CreateStringBuilder(); | ||
| isOpen = true; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Disposes this instance, operations are no longer allowed. | ||
| /// </summary> | ||
| public override void Close() | ||
| { | ||
| Dispose(true); | ||
| } | ||
|
|
||
| protected override void Dispose(bool disposing) | ||
| { | ||
| sb.Dispose(); | ||
| isOpen = false; | ||
| base.Dispose(disposing); | ||
| } | ||
|
|
||
| public override Encoding Encoding => encoding = encoding ?? new UnicodeEncoding(false, false); | ||
|
|
||
| public override void Write(char value) | ||
| { | ||
| AssertNotDisposed(); | ||
|
|
||
| sb.Append(value); | ||
| } | ||
|
|
||
| public override void Write(char[] buffer, int index, int count) | ||
| { | ||
| if (buffer == null) | ||
| { | ||
| throw new ArgumentNullException(nameof(buffer)); | ||
| } | ||
| if (index < 0) | ||
| { | ||
| throw new ArgumentOutOfRangeException(nameof(index)); | ||
| } | ||
| if (count < 0) | ||
| { | ||
| throw new ArgumentOutOfRangeException(nameof(count)); | ||
| } | ||
| if (buffer.Length - index < count) | ||
| { | ||
| throw new ArgumentException(); | ||
| } | ||
| AssertNotDisposed(); | ||
|
|
||
| sb.Append(buffer.AsSpan(index, count)); | ||
| } | ||
|
|
||
| public override void Write(string value) | ||
| { | ||
| AssertNotDisposed(); | ||
|
|
||
| if (value != null) | ||
| { | ||
| sb.Append(value); | ||
| } | ||
| } | ||
|
|
||
| public override Task WriteAsync(char value) | ||
| { | ||
| Write(value); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override Task WriteAsync(string value) | ||
| { | ||
| Write(value); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override Task WriteAsync(char[] buffer, int index, int count) | ||
| { | ||
| Write(buffer, index, count); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override Task WriteLineAsync(char value) | ||
| { | ||
| WriteLine(value); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override Task WriteLineAsync(string value) | ||
| { | ||
| WriteLine(value); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override Task WriteLineAsync(char[] buffer, int index, int count) | ||
| { | ||
| WriteLine(buffer, index, count); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public override void Write(bool value) | ||
| { | ||
| AssertNotDisposed(); | ||
| sb.Append(value); | ||
| } | ||
|
|
||
| public override void Write(decimal value) | ||
| { | ||
| AssertNotDisposed(); | ||
| sb.Append(value); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// No-op. | ||
| /// </summary> | ||
| public override Task FlushAsync() | ||
| { | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Materializes the current state from underlying string builder. | ||
| /// </summary> | ||
| public override string ToString() | ||
| { | ||
| return sb.ToString(); | ||
| } | ||
|
|
||
| #if !UNITY_2018_3_OR_NEWER | ||
|
|
||
| public | ||
| #if !NETSTANDARD2_0 && !NETFRAMEWORK | ||
| override | ||
| #endif | ||
| void Write(ReadOnlySpan<char> buffer) | ||
| { | ||
| AssertNotDisposed(); | ||
|
|
||
| sb.Append(buffer); | ||
| } | ||
|
|
||
| public | ||
| #if !NETSTANDARD2_0 && !NETFRAMEWORK | ||
| override | ||
| #endif | ||
| void WriteLine(ReadOnlySpan<char> buffer) | ||
| { | ||
| AssertNotDisposed(); | ||
|
|
||
| sb.Append(buffer); | ||
| WriteLine(); | ||
| } | ||
|
|
||
| public | ||
| #if !NETSTANDARD2_0 && !NETFRAMEWORK | ||
| override | ||
| #endif | ||
| Task WriteAsync(ReadOnlyMemory<char> buffer, CancellationToken cancellationToken = default) | ||
| { | ||
| if (cancellationToken.IsCancellationRequested) | ||
| { | ||
| return Task.FromCanceled(cancellationToken); | ||
| } | ||
|
|
||
| Write(buffer.Span); | ||
| return Task.CompletedTask; | ||
| } | ||
|
|
||
| public | ||
| #if !NETSTANDARD2_0 && !NETFRAMEWORK | ||
| override | ||
| #endif | ||
| Task WriteLineAsync(ReadOnlyMemory<char> buffer, CancellationToken cancellationToken = default) | ||
| { | ||
| if (cancellationToken.IsCancellationRequested) | ||
| { | ||
| return Task.FromCanceled(cancellationToken); | ||
| } | ||
|
|
||
| WriteLine(buffer.Span); | ||
| return Task.CompletedTask; | ||
| } | ||
| #endif | ||
|
|
||
| private void AssertNotDisposed() | ||
| { | ||
| if (!isOpen) | ||
| { | ||
| throw new ObjectDisposedException(nameof(sb)); | ||
| } | ||
| } | ||
| } | ||
| } |