51 lines
1.8 KiB
Java
51 lines
1.8 KiB
Java
package me.topchetoeu.jscript.engine.modules;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.nio.file.Path;
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import me.topchetoeu.jscript.polyfills.PolyfillEngine;
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public class FileModuleProvider implements ModuleProvider {
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public File root;
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public final boolean allowOutside;
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private boolean checkInside(Path modFile) {
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return modFile.toAbsolutePath().startsWith(root.toPath().toAbsolutePath());
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}
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@Override
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public Module getModule(File cwd, String name) {
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var realName = getRealName(cwd, name);
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if (realName == null) return null;
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var path = Path.of(realName + ".js").normalize();
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try {
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var res = PolyfillEngine.streamToString(new FileInputStream(path.toFile()));
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return new Module(realName, path.toString(), res);
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}
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catch (IOException e) {
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return null;
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}
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}
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@Override
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public String getRealName(File cwd, String name) {
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var path = Path.of(".", Path.of(cwd.toString(), name).normalize().toString());
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var fileName = path.getFileName().toString();
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if (fileName == null) return null;
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if (!fileName.equals("index") && path.toFile().isDirectory()) return getRealName(cwd, name + "/index");
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path = Path.of(path.toString() + ".js");
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if (!allowOutside && !checkInside(path)) return null;
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if (!path.toFile().isFile() || !path.toFile().canRead()) return null;
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var res = path.toString().replace('\\', '/');
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var i = res.lastIndexOf('.');
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return res.substring(0, i);
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}
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public FileModuleProvider(File root, boolean allowOutside) {
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this.root = root.toPath().normalize().toFile();
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this.allowOutside = allowOutside;
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}
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}
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