59 lines
1.3 KiB
C#
59 lines
1.3 KiB
C#
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using System.Collections.Generic;
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using System.IO;
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namespace arookas
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{
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class sunImportTable
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{
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List<string> imports = new List<string>(10);
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Stack<string> curDir = new Stack<string>(5);
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string RootDir { get; set; }
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public sunImportTable(string rootDir)
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{
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RootDir = rootDir;
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}
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public void PushDir(string dir) { curDir.Push(Path.GetDirectoryName(dir)); }
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public void PopDir() { curDir.Pop(); }
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public string ResolveImport(sunImport import)
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{
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string fullPath;
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string file = import.ImportFile.Value;
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if (Path.IsPathRooted(file))
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{
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// if the path is absolute, just use it directly
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fullPath = file;
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if (!File.Exists(fullPath))
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{
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// could not find file
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throw new sunMissingImportException(import);
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}
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}
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else
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{
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// check if the file exists relative to the current one;
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// if it's not there, check the root directory
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fullPath = Path.Combine(curDir.Peek(), file);
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if (!File.Exists(fullPath))
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{
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fullPath = Path.Combine(RootDir, file);
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if (!File.Exists(fullPath))
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{
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// could not find file
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throw new sunMissingImportException(import);
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}
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}
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}
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// make sure the file has not been imported yet
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if (imports.Contains(fullPath))
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{
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return null;
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}
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imports.Add(fullPath);
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return fullPath;
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}
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}
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}
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