53 lines
1.4 KiB
C#
53 lines
1.4 KiB
C#
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using System.Text.RegularExpressions;
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namespace StitcherApi.Services.Utilities;
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public static class CoordinateParser
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{
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private static readonly Regex CoordRegex = new(
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@"([A-Z]+)(\d+)",
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RegexOptions.Compiled | RegexOptions.IgnoreCase
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);
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public static (int MinRow, int MinCol, int MaxRow, int MaxCol) ParseCanvasRect(string rect)
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{
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if (string.IsNullOrEmpty(rect))
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{
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throw new ArgumentException("canvas_rect cannot be null or empty.");
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}
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var parts = rect.Split(':');
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if (parts.Length != 2)
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{
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throw new ArgumentException("Invalid canvas_rect format.");
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}
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var (row1, col1) = ParseSingleCoordinate(parts[0]);
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var (row2, col2) = ParseSingleCoordinate(parts[1]);
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return (
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Math.Min(row1, row2),
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Math.Min(col1, col2),
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Math.Max(row1, row2),
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Math.Max(col1, col2)
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);
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}
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private static (int Row, int Col) ParseSingleCoordinate(string coord)
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{
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var match = CoordRegex.Match(coord);
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if (!match.Success)
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{
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throw new ArgumentException($"Invalid coordinate format: {coord}");
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}
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var rowStr = match.Groups[1].Value.ToUpper();
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var colStr = match.Groups[2].Value;
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int row = rowStr.Length == 1 ? rowStr[0] - 'A' : 26 + (rowStr[1] - 'A');
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int col = int.Parse(colStr) - 1;
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return (row, col);
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}
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}
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