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using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using UnityEditor.Experimental.AssetImporters;
using UnityEngine;
namespace Poiyomi.ModularShaderSystem
{
[ScriptedImporter(1, MSSConstants.TEMPLATE_COLLECTION_EXTENSION)]
public class TemplateColletionAssetImporter : ScriptedImporter
{
public override void OnImportAsset(AssetImportContext ctx)
{
var subAsset = ScriptableObject.CreateInstance<TemplateCollectionAsset>();
using (var sr = new StringReader(File.ReadAllText(ctx.assetPath)))
{
var builder = new StringBuilder();
string line;
string name = "";
bool deleteEmptyLine = false;
while ((line = sr.ReadLine()) != null)
{
if (line.Contains("#T#"))
{
if (builder.Length > 0 && !string.IsNullOrWhiteSpace(name))
SaveSubAsset(ctx, subAsset, builder, name);
builder = new StringBuilder();
name = line.Replace("#T#", "").Trim();
continue;
}
if (string.IsNullOrEmpty(line))
{
if (deleteEmptyLine)
continue;
deleteEmptyLine = true;
}
else
{
deleteEmptyLine = false;
}
builder.AppendLine(line);
}
if (builder.Length > 0 && !string.IsNullOrWhiteSpace(name))
SaveSubAsset(ctx, subAsset, builder, name);
}
ctx.AddObjectToAsset("Collection", subAsset);
ctx.SetMainObject(subAsset);
}
private static void SaveSubAsset(AssetImportContext ctx, TemplateCollectionAsset asset, StringBuilder builder, string name)
{
var templateAsset = ScriptableObject.CreateInstance<TemplateAsset>();
templateAsset.Template = builder.ToString();
templateAsset.name = name;
MatchCollection mk = Regex.Matches(templateAsset.Template, @"#K#\w*", RegexOptions.Multiline);
MatchCollection mki = Regex.Matches(templateAsset.Template, @"#KI#\w*", RegexOptions.Multiline);
var mkr = new string[mk.Count + mki.Count];
for (var i = 0; i < mk.Count; i++)
mkr[i] = mk[i].Value;
for (var i = 0; i < mki.Count; i++)
mkr[mk.Count + i] = mki[i].Value;
templateAsset.Keywords = mkr.Distinct().ToArray();
ctx.AddObjectToAsset(name, templateAsset);
asset.Templates.Add(templateAsset);
}
public override bool SupportsRemappedAssetType(Type type)
{
return type.IsAssignableFrom(typeof(TemplateAsset));
}
}
}
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