SharedStringWriter.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 NanoXLSX.Interfaces;
using NanoXLSX.Interfaces.Writer;
using NanoXLSX.Registry;
using NanoXLSX.Registry.Attributes;
using NanoXLSX.Utils;
using NanoXLSX.Utils.Xml;
 
namespace NanoXLSX.Internal.Writers
{
    [NanoXlsxPlugIn(PlugInUUID = PlugInUUID.SharedStringsWriter)]
    internal class SharedStringWriter : ISharedStringWriter
    {
        private XmlElement sst;
        private SortedMap sharedStrings;
 
        #region properties
        public Workbook Workbook { get; set; }

        public XmlElement XmlElement => sst;

        public int SharedStringsTotalCount { get; set; }

        public ISortedMap SharedStrings => sharedStrings;
 
        #endregion
        #region constructors
        public SharedStringWriter()
        {
        }
 
        #endregion
        #region methods
        public void Init(IBaseWriter baseWriter)
        {
            this.Workbook = baseWriter.Workbook;
            sharedStrings = new SortedMap();
            SharedStringsTotalCount = 0;
        }

        public void Execute()
        {
            sst = XmlElement.CreateElement("sst");
            sst.AddDefaultXmlNameSpace("http://schemas.openxmlformats.org/spreadsheetml/2006/main");
            sst.AddAttribute("count", ParserUtils.ToString(SharedStringsTotalCount));
            sst.AddAttribute("uniqueCount", ParserUtils.ToString(sharedStrings.Count));
            foreach (IFormattableText text in sharedStrings.Keys)
            {
                sst.AddChildElement(text.GetXmlElement());
            }
 
            WriterPlugInHandler.HandleInlineQueuePlugins(ref sst, Workbook, PlugInUUID.SharedStringsInlineWriter);
        }
        #endregion
    }
}