aj
6f38c11383
PartQuantityReader parses a Parts worksheet (Part Name / Qty Required) with exact-name matching and strict rejection of invalid, fractional, negative, or duplicate quantities. Cut-only import drops case-insensitive ETCH/SCRIBE mark layers before geometry so bend detection cannot regenerate them. Tests cover both.
62 lines
2.5 KiB
C#
62 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using ClosedXML.Excel;
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namespace OpenNest.IO.Bom;
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/// <summary>Strict demand reader for Parts sheets with Part Name and Qty Required columns.</summary>
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public static class PartQuantityReader
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{
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public static IReadOnlyDictionary<string, int> Read(string path)
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{
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using var workbook = new XLWorkbook(path);
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if (!workbook.TryGetWorksheet("Parts", out var sheet))
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throw new InvalidDataException("Workbook must contain a Parts worksheet.");
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var nameColumn = FindColumn(sheet, "Part Name");
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var quantityColumn = FindColumn(sheet, "Qty Required");
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var quantities = new Dictionary<string, int>(StringComparer.Ordinal);
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var lastRow = sheet.LastRowUsed()?.RowNumber() ?? 1;
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for (var row = 2; row <= lastRow; row++)
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{
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var nameCell = sheet.Cell(row, nameColumn);
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var quantityCell = sheet.Cell(row, quantityColumn);
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if (nameCell.IsEmpty() && quantityCell.IsEmpty())
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continue;
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var name = nameCell.GetString();
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// Do not truncate fractional quantities, infer a default, or silently normalize identifiers.
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if (
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string.IsNullOrWhiteSpace(name)
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|| !double.TryParse(
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quantityCell.GetString(),
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NumberStyles.Float,
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CultureInfo.InvariantCulture,
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out var number
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)
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|| !double.IsFinite(number)
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|| number < 0
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|| number > int.MaxValue
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|| number != System.Math.Truncate(number)
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)
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throw new InvalidDataException(
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$"Invalid part name or nonnegative integer quantity at Parts row {row}."
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);
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if (!quantities.TryAdd(name, (int)number))
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throw new InvalidDataException($"Duplicate part name at Parts row {row}: {name}");
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}
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if (!quantities.Values.Any(q => q > 0))
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throw new InvalidDataException("Workbook contains no positive part demand.");
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return quantities;
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}
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private static int FindColumn(IXLWorksheet sheet, string name)
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{
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var matches = sheet.Row(1).CellsUsed().Where(c => c.GetString() == name).ToList();
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if (matches.Count != 1)
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throw new InvalidDataException($"Parts must contain exactly one '{name}' column.");
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return matches[0].Address.ColumnNumber;
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}
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}
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