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remove unused ability to include internal members in formatter output
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128 changes: 128 additions & 0 deletions
128
src/Microsoft.DotNet.Interactive.Formatting/Csv/CsvFormatter{T}.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| // Copyright (c) .NET Foundation and contributors. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
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| using System; | ||
| using System.Collections; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
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| namespace Microsoft.DotNet.Interactive.Formatting.Csv; | ||
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| public class CsvFormatter<T> : TypeFormatter<T> | ||
| { | ||
| private readonly FormatDelegate<T> _format; | ||
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| public CsvFormatter(FormatDelegate<T> format) | ||
| { | ||
| _format = format; | ||
| } | ||
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| public override bool Format(T value, FormatContext context) => _format(value, context); | ||
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| public override string MimeType => CsvFormatter.MimeType; | ||
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| internal static CsvFormatter<T> Create() | ||
| { | ||
| Func<T, IEnumerable> getHeaderValues = null; | ||
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| Func<T, IEnumerable> getRowValues; | ||
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| IDestructurer destructurer; | ||
| if (typeof(T).IsEnumerable()) | ||
| { | ||
| destructurer = Destructurer.GetOrCreate(typeof(T).GetElementTypeIfEnumerable()); | ||
| getRowValues = instance => (IEnumerable)instance; | ||
| } | ||
| else | ||
| { | ||
| destructurer = Destructurer<T>.GetOrCreate(); | ||
| getRowValues = instance => new[] { instance }; | ||
| } | ||
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| var isDictionary = | ||
| typeof(T).GetAllInterfaces() | ||
| .FirstOrDefault(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IDictionary<,>)) is not null | ||
| || | ||
| typeof(T).GetAllInterfaces() | ||
| .FirstOrDefault(i => i == typeof(IDictionary)) is not null; | ||
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| if (isDictionary) | ||
| { | ||
| getHeaderValues = instance => ((IDictionary)instance).Keys; | ||
| getRowValues = instance => new[] { instance }; | ||
| } | ||
| else | ||
| { | ||
| getHeaderValues = _ => destructurer.Keys; | ||
| } | ||
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| return new CsvFormatter<T>( (v,c) => BuildTable(v, getHeaderValues, getRowValues, c)); | ||
| } | ||
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| internal static bool BuildTable(T value, Func<T, IEnumerable> getHeaderValues, Func<T, IEnumerable> getRowValues, FormatContext context) | ||
| { | ||
| var keys = getHeaderValues(value); | ||
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| if (keys is not ICollection headers) | ||
| { | ||
| return false; | ||
| } | ||
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| var headerIndex = 0; | ||
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| foreach (var header in headers) | ||
| { | ||
| context.Writer.Write(header); | ||
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| if (++headerIndex < headers.Count) | ||
| { | ||
| context.Writer.Write(","); | ||
| } | ||
| } | ||
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| context.Writer.WriteLine(); | ||
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| IDestructurer rowDestructurer = null; | ||
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| var rows = getRowValues(value); | ||
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| foreach (var row in rows) | ||
| { | ||
| var rowIndex = 0; | ||
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| if (row is not IEnumerable cells) | ||
| { | ||
| rowDestructurer ??= Destructurer.GetOrCreate(row.GetType()); | ||
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| cells = rowDestructurer.Destructure(row).Values; | ||
| } | ||
| else if (row is IDictionary d) | ||
| { | ||
| cells = d.Values; | ||
| } | ||
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| foreach (var cell in cells) | ||
| { | ||
| var formatted = cell switch | ||
| { | ||
| DateTime d => d.ToString("o"), | ||
| null => "", | ||
| _ => cell.ToString() | ||
| }; | ||
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| context.Writer.Write(formatted.EscapeCsvValue()); | ||
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| if (++rowIndex < headers.Count) | ||
| { | ||
| context.Writer.Write(","); | ||
| } | ||
| } | ||
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| context.Writer.WriteLine(); | ||
| } | ||
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| return true; | ||
| } | ||
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| } |
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