Merge pull request #644 from paul-hammant-fork/master

server side include

Author: jknack

jooby/src/main/java/org/jooby/SSIHandler.java

@@ -0,0 +1,67 @@
+package org.jooby;
+
+import org.jooby.Request;
+import org.jooby.Response;
+import org.jooby.Route;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.util.Arrays;
+
+public class SSIHandler implements Route.Handler {
+
+  private final String file;
+  private final String type;
+
+  public SSIHandler(String file, String type) {
+    this.file = file;
+    this.type = type;
+  }
+
+  @Override
+  public void handle(Request req, Response rsp) throws Throwable {
+    StringBuilder op = new StringBuilder();
+    process(op, file);
+    Charset charset = Charset.forName("UTF-8");
+    byte[] output = op.toString().getBytes(charset);
+    rsp.charset(charset);
+    rsp.length(output.length);
+    rsp.type(type);
+    rsp.status(200);
+    rsp.send(output);
+  }
+
+  private void process(StringBuilder op, String file) throws IOException {
+    InputStream stream = this.getClass().getResourceAsStream(file);
+    if (stream == null) {
+      stream = findResource(file, "/target/test-classes", "/target/classes");
+    }
+    LineNumberReader lnr = new LineNumberReader(new InputStreamReader(stream));
+    String line = lnr.readLine();
+    while (line != null) {
+      if (line.contains("JOOBY-INCLUDE")) {
+        process(op, toInclude(line));
+      } else {
+        op.append(line).append("\n");
+      }
+      line = lnr.readLine();
+    }
+  }
+
+  private InputStream findResource(String file, String... paths) throws IOException {
+    final String canonicalPath = new File(".").getCanonicalPath();
+    for (String path : paths) {
+      final String filePath = (canonicalPath + path) + file;
+      System.err.println("--> " + filePath);
+      if(new File(filePath).exists()) {
+        return new FileInputStream(filePath);
+      }
+    }
+    throw new UnsupportedOperationException(file + " not found in " + Arrays.toString(paths));
+  }
+
+  private String toInclude(String line) {
+    int str = line.indexOf("JOOBY-INCLUDE ") + "JOOBY-INCLUDE ".length();
+    return line.substring(str, line.indexOf(" ", str + 1));
+  }
+}