102 lines
2.9 KiB
C#
102 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using Esprima.Ast;
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using ln.templates.html;
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namespace ln.templates;
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public class RecursiveResolver : ITemplateResolver
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{
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public RecursiveResolver(string path)
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:this(null, path)
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{
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}
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private RecursiveResolver(RecursiveResolver parent, string path)
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{
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Parent = parent;
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Path = System.IO.Path.Combine(Parent?.Path ?? "", path);
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if (!Directory.Exists(Path))
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throw new DirectoryNotFoundException(Path);
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}
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public RecursiveResolver Root => Parent?.Root ?? this;
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public RecursiveResolver Parent { get; private set; }
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public string Path { get; private set; }
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private bool IsAlive => Directory.Exists(Path);
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private Dictionary<string, RecursiveResolver> _children = new Dictionary<string, RecursiveResolver>();
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private Dictionary<string, Template> _templates = new Dictionary<string, Template>();
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public RecursiveResolver FindResolver(string path) => FindResolver(
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path.Split(System.IO.Path.DirectorySeparatorChar) ?? Array.Empty<string>());
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private RecursiveResolver FindResolver(Span<string> pathElements)
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{
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if (pathElements.Length == 0)
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return this;
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if (!_children.TryGetValue(pathElements[0], out RecursiveResolver child))
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{
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if (Directory.Exists(System.IO.Path.Combine(Path, pathElements[0])))
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{
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child = new RecursiveResolver(this, pathElements[0]);
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_children.Add(pathElements[0], child);
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}
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}
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if (child?.IsAlive ?? false)
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return child.FindResolver(pathElements.Slice(1));
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if (child is not null)
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_children.Remove(pathElements[0]);
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return null;
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}
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public Template GetTemplateByPath(string templatePath)
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{
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RecursiveResolver resolver;
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Span<string> pathElements = templatePath.Split(System.IO.Path.DirectorySeparatorChar);
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if (string.Empty.Equals(pathElements[0]))
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resolver = Root;
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else
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resolver = FindResolver(pathElements.Slice(0, pathElements.Length - 1));
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Template template = resolver?.GetTemplate(pathElements[^1]);
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if (template is null)
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return null;
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template.Resolver = this;
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return template;
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}
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public Template GetTemplate(string name)
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{
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string filename = System.IO.Path.Combine(Path, name);
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if (File.Exists(filename))
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{
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if (!_templates.TryGetValue(name, out Template template))
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{
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template = new Template(filename, this);
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_templates.Add(name, template);
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}
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return template;
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}
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if (Parent is not null)
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return Parent.GetTemplate(name);
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return null;
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}
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public override string ToString()
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{
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return String.Format("[RecursiveResolver {0}]", Path);
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}
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} |