55 lines
1.9 KiB
C#
55 lines
1.9 KiB
C#
using CommandLine;
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using ExcelDataReader;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Excel2TextDiff
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{
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class Excel2TextWriter
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{
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public void TransformToTextAndSave(string excelFile, string outputTextFile)
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{
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var lines = new List<string>();
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using var excelFileStream = new FileStream(excelFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
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string ext = Path.GetExtension(excelFile);
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using (var reader = ext != ".csv" ? ExcelReaderFactory.CreateReader(excelFileStream) : ExcelReaderFactory.CreateCsvReader(excelFileStream))
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{
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do
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{
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lines.Add($"===[{reader.Name ?? ""}]===");
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LoadRows(reader, lines);
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} while (reader.NextResult());
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}
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File.WriteAllLines(outputTextFile, lines, System.Text.Encoding.UTF8);
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}
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private void LoadRows(IExcelDataReader reader, List<string> lines)
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{
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var row = new List<string>();
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while (reader.Read())
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{
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row.Clear();
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for (int i = 0, n = reader.FieldCount; i < n; i++)
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{
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object cell = reader.GetValue(i);
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row.Add(cell != null ? cell.ToString() : "");
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}
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// 只保留到最后一个非空白单元格
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int lastNotEmptyIndex = row.FindLastIndex(s => !string.IsNullOrEmpty(s));
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if (lastNotEmptyIndex >= 0)
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{
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lines.Add(string.Join(',', row.GetRange(0, lastNotEmptyIndex + 1)));
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}
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else
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{
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// 忽略空白行，没必要diff这个
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}
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}
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}
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}
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}
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