51 lines
1.4 KiB
C#
51 lines
1.4 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using System.Threading.Tasks;
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namespace Elwig.Helpers.Export {
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public abstract class Csv<T> : IExporter<T> {
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public static string FileExtension => "csv";
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protected readonly StreamWriter Writer;
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protected readonly char Separator;
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protected string? Header;
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public Csv(string filename, char separator = ';') : this(filename, separator, Encoding.UTF8) { }
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public Csv(string filename, char separator, Encoding encoding) {
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Writer = new StreamWriter(filename, false, encoding);
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Separator = separator;
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}
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public void Dispose() {
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GC.SuppressFinalize(this);
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Writer.Dispose();
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}
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public ValueTask DisposeAsync() {
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GC.SuppressFinalize(this);
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return Writer.DisposeAsync();
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}
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public async Task ExportAsync(IEnumerable<T> data) {
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if (Header != null) await Writer.WriteLineAsync(Header);
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foreach (var row in data) {
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await Writer.WriteLineAsync(FormatRow(row));
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}
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}
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public void Export(IEnumerable<T> data) {
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ExportAsync(data).GetAwaiter().GetResult();
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}
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public string FormatRow(IEnumerable row) {
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return string.Join(Separator, row);
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}
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public abstract string FormatRow(T row);
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}
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}
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