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Initial commit til Git. V2 er deployed
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using System.Collections.Generic;
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namespace ESCPOS_NET.DataValidation
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{
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public class DataConstraint
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{
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public int MinLength { get; set; }
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public int MaxLength { get; set; }
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public List<int> ValidLengths { get; set; }
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public string ValidChars { get; set; }
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}
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}
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193
PointOfSale/Utilities/ESCPOS_NET/DataValidation/DataValidator.cs
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193
PointOfSale/Utilities/ESCPOS_NET/DataValidation/DataValidator.cs
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using ESCPOS_NET.Emitters;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace ESCPOS_NET.DataValidation
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{
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public abstract class BaseDataValidator<T> where T : Enum
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{
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protected Dictionary<T, DataConstraint> _constraints;
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public void Validate(T type, string data, BarcodeCode? code = null)
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{
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if (data is null)
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{
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throw new ArgumentNullException(nameof(data));
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}
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// Validate constraints on barcode.
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_constraints.TryGetValue(type, out var constraints);
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if (constraints is null)
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{
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return;
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}
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// Check lengths
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if (constraints.ValidLengths != null)
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{
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if (!constraints.ValidLengths.Contains(data.Length))
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{
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throw new ArgumentException($"Code '{data}' is not a valid length from: [{string.Join(", ", constraints.ValidLengths)}].");
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}
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}
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else if (data.Length < constraints.MinLength)
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{
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throw new ArgumentException($"Code '{data}' is shorter than minimum length {constraints.MinLength}.");
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}
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else if (data.Length > constraints.MaxLength)
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{
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throw new ArgumentException($"Code '{data}' is longer than maximum length {constraints.MaxLength}.");
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}
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// Check if barcode contains invalid characters.
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if (constraints.ValidChars == "7BIT-ASCII")
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{
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if (!data.All(x => x <= 127 && x >= 0))
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{
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throw new ArgumentException($"Code '{data}' contained invalid characters not in: {constraints.ValidChars}.");
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}
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}
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else if (constraints.ValidChars != null && !data.All(x => constraints.ValidChars.Contains(x)))
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{
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throw new ArgumentException($"Code '{data}' contained invalid characters not in: {constraints.ValidChars}.");
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}
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RunSpecificValidations(type, data, code);
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}
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protected abstract void RunSpecificValidations(T type, string data, BarcodeCode? code);
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}
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public static class DataValidator
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{
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private static BarcodeDataValidator singletonBarcode = null;
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private static TwoDimensionCodeDataValidator singleton2DCode = null;
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public static void ValidateBarcode(BarcodeType type, BarcodeCode code, string data)
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{
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if (singletonBarcode is null)
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{
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singletonBarcode = new BarcodeDataValidator();
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}
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singletonBarcode.Validate(type, data, code);
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}
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public static void Validate2DCode(TwoDimensionCodeType type, string data)
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{
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if (singleton2DCode is null)
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{
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singleton2DCode = new TwoDimensionCodeDataValidator();
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}
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singleton2DCode.Validate(type, data);
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}
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private class BarcodeDataValidator : BaseDataValidator<BarcodeType>
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{
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public BarcodeDataValidator()
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{
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_constraints = new Dictionary<BarcodeType, DataConstraint>()
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{
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{ BarcodeType.UPC_A, new DataConstraint() { MinLength = 11, MaxLength = 12, ValidChars = "0123456789" } },
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{ BarcodeType.UPC_E, new DataConstraint() { ValidLengths = new List<int>() { 6, 7, 8, 11, 12 }, ValidChars = "0123456789" } },
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{ BarcodeType.JAN13_EAN13, new DataConstraint() { MinLength = 12, MaxLength = 13, ValidChars = "0123456789" } },
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{ BarcodeType.JAN8_EAN8, new DataConstraint() { MinLength = 7, MaxLength = 8, ValidChars = "0123456789" } },
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{ BarcodeType.CODE39, new DataConstraint() { MinLength = 1, MaxLength = 255, ValidChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./" } },
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{ BarcodeType.ITF, new DataConstraint() { MinLength = 2, MaxLength = 255, ValidChars = "0123456789" } },
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{ BarcodeType.CODABAR_NW_7, new DataConstraint() { MinLength = 2, MaxLength = 255, ValidChars = "0123456789ABCDabcd$+-./:" } },
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{ BarcodeType.CODE93, new DataConstraint() { MinLength = 1, MaxLength = 255, ValidChars = "7BIT-ASCII" } },
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{ BarcodeType.CODE128, new DataConstraint() { MinLength = 1, MaxLength = 253, ValidChars = "7BIT-ASCII" } },
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{ BarcodeType.GS1_128, new DataConstraint() { MinLength = 1, MaxLength = 253, ValidChars = "7BIT-ASCII" } },
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{ BarcodeType.GS1_DATABAR_OMNIDIRECTIONAL, new DataConstraint() { MinLength = 13, MaxLength = 13, ValidChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./" } },
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{ BarcodeType.GS1_DATABAR_TRUNCATED, new DataConstraint() { MinLength = 13, MaxLength = 13, ValidChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./" } },
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{ BarcodeType.GS1_DATABAR_LIMITED, new DataConstraint() { MinLength = 13, MaxLength = 13, ValidChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./" } },
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{ BarcodeType.GS1_DATABAR_EXPANDED, new DataConstraint() { MinLength = 2, MaxLength = 255, ValidChars = "0123456789ABCDabcd !\"%$'()*+,-./:;<=>?_{" } },
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};
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}
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protected override void RunSpecificValidations(BarcodeType type, string barcode, BarcodeCode? code)
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{
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switch (type)
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{
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case BarcodeType.UPC_E:
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if (barcode.Length != 6 && !barcode.StartsWith("0", StringComparison.InvariantCulture))
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{
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throw new ArgumentException($"UPC_E Barcode {barcode} with length of 7, 8, 11, or 12 must start with 0.");
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}
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break;
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case BarcodeType.ITF:
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if (barcode.Length % 2 != 0)
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{
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throw new ArgumentException($"ITF Barcode {barcode} has length {barcode.Length}, which is not an even number.");
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}
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break;
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case BarcodeType.CODABAR_NW_7:
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if (!"ABCD".Contains(barcode[0]) || !"ABCD".Contains(barcode[barcode.Length - 1]))
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{
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throw new ArgumentException($"CODABAR_NW_7 Barcode {barcode} must start and end with an ABCD character.");
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}
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if (barcode.Skip(1).Take(barcode.Length - 2).Any(x => "ABCD".Contains(x)))
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{
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throw new ArgumentException($"CODABAR_NW_7 Barcode {barcode} must not include ABCD characters in the body of the barcode.");
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}
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break;
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case BarcodeType.CODE93:
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if (!barcode.StartsWith("*", StringComparison.InvariantCulture) || !barcode.EndsWith("*", StringComparison.InvariantCulture))
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{
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throw new ArgumentException($"CODE93 Barcode {barcode} must start and end with * characters.");
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}
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break;
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case BarcodeType.CODE128:
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if (code == BarcodeCode.CODE_C)
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{
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if (barcode.Length % 2 != 0)
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{
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throw new ArgumentException($"{nameof(barcode)} length must be divisible by 2");
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}
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if (!barcode.All(x => x <= '9' && x >= '0'))
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{
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throw new ArgumentException($"Barcode {barcode} is invalid. CODE128 CODE_C barcodes only support numeric characters.");
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}
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}
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break;
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}
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}
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}
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private class TwoDimensionCodeDataValidator : BaseDataValidator<TwoDimensionCodeType>
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{
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public TwoDimensionCodeDataValidator()
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{
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_constraints = new Dictionary<TwoDimensionCodeType, DataConstraint>()
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{
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{ TwoDimensionCodeType.PDF417, new DataConstraint() { MinLength = 0, MaxLength = 255 } },
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{ TwoDimensionCodeType.QRCODE_MODEL1, new DataConstraint() { MinLength = 0, MaxLength = 707 } },
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{ TwoDimensionCodeType.QRCODE_MODEL2, new DataConstraint() { MinLength = 0, MaxLength = 4296 } },
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{ TwoDimensionCodeType.QRCODE_MICRO, new DataConstraint() { MinLength = 0, MaxLength = 21 } },
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};
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}
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// TODO: Research specific validations for QRCode & PDF417
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protected override void RunSpecificValidations(TwoDimensionCodeType type, string barcode, BarcodeCode? code)
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{
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if (code != null)
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{
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throw new ArgumentException($"Barcode code should be always null for 2D Codes.", nameof(code));
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}
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}
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}
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}
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}
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