XmlAttribute.cs

/*
 * NanoXLSX is a small .NET library to generate and read XLSX (Microsoft Excel 2007 or newer) files in an easy and native way  
 * Copyright Raphael Stoeckli © 2026
 * This library is licensed under the MIT License.
 * You find a copy of the license in project folder or on: http://opensource.org/licenses/MIT
 */
 
using System.Collections.Generic;
using System.Linq;
 
namespace NanoXLSX.Utils.Xml
{
    // TODO Set to internal in next major release
    public struct XmlAttribute
    {
        public string Name { get; private set; }
        public string Value { get; private set; }
        public bool HasPrefix { get; private set; }
        public string Prefix { get; private set; }

 
        internal XmlAttribute(string name, string value, string prefix = "")
        {
            this.Name = name;
            this.Value = value;
            this.Prefix = prefix;
            HasPrefix = !string.IsNullOrEmpty(prefix);
        }

        public static XmlAttribute CreateAttribute(string name, string value, string prefix = "")
        {
            return new XmlAttribute(name, value, prefix);
        }

        public static XmlAttribute CreateEmptyAttribute(string name, string prefix = "")
        {
            return new XmlAttribute(name, "", prefix);
        }

        public static XmlAttribute? FindAttribute(string name, HashSet<XmlAttribute> attributes)
        {
            if (attributes == null || attributes.Count == 0)
            {
                return null;
            }
            if (!attributes.Any(a => a.Name == name))
            {
                return null;
            }
            return attributes.Where(a => a.Name == name).FirstOrDefault();
        }

        public override bool Equals(object obj)
        {
            return obj is XmlAttribute attribute &&
                   Name == attribute.Name &&
                   Value == attribute.Value &&
                   Prefix == attribute.Prefix;
        }

        public override int GetHashCode()
        {
            unchecked
            {
                int hashCode = 27885120;
                hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Name);
                hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Value);
                hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Prefix);
                return hashCode;
            }
        }
    }
}