1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/org/anarres/cpp/ResourceFileSystem.java b/src/main/java/org/anarres/cpp/ResourceFileSystem.java
new file mode 100644
index 0000000..7efd664
--- /dev/null
+++ b/src/main/java/org/anarres/cpp/ResourceFileSystem.java
@@ -0,0 +1,81 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.anarres.cpp;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import javax.annotation.Nonnull;
+
+/**
+ *
+ * @author shevek
+ */
+public class ResourceFileSystem implements VirtualFileSystem {
+
+    private final ClassLoader loader;
+
+    public ResourceFileSystem(@Nonnull ClassLoader loader) {
+        this.loader = loader;
+    }
+
+    @Override
+    public VirtualFile getFile(String path) {
+        return new ResourceFile(loader, path);
+    }
+
+    @Override
+    public VirtualFile getFile(String dir, String name) {
+        return getFile(dir + "/" + name);
+    }
+
+    private class ResourceFile implements VirtualFile {
+
+        private final ClassLoader loader;
+        private final String path;
+
+        public ResourceFile(ClassLoader loader, String path) {
+            this.loader = loader;
+            this.path = path;
+        }
+
+        @Override
+        public boolean isFile() {
+            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+        }
+
+        @Override
+        public String getPath() {
+            return path;
+        }
+
+        @Override
+        public String getName() {
+            return path.substring(path.lastIndexOf('/') + 1);
+        }
+
+        @Override
+        public ResourceFile getParentFile() {
+            int idx = path.lastIndexOf('/');
+            if (idx < 1)
+                return null;
+            return new ResourceFile(loader, path.substring(0, idx));
+        }
+
+        @Override
+        public ResourceFile getChildFile(String name) {
+            return new ResourceFile(loader, path + "/" + name);
+        }
+
+        @Override
+        public Source getSource() throws IOException {
+            InputStream stream = loader.getResourceAsStream(path);
+            BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
+            return new LexerSource(reader, true);
+        }
+    }
+}