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From GitBox <...@apache.org>
Subject [GitHub] [fluo] ctubbsii commented on a change in pull request #1077: Updated commons config from ver 1 to 2
Date Mon, 12 Aug 2019 22:11:49 GMT
ctubbsii commented on a change in pull request #1077: Updated commons config from ver 1 to
2
URL: https://github.com/apache/fluo/pull/1077#discussion_r313143651
 
 

 ##########
 File path: modules/api/src/main/java/org/apache/fluo/api/config/SimpleConfiguration.java
 ##########
 @@ -335,4 +334,35 @@ private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundE
     ByteArrayInputStream bais = new ByteArrayInputStream(data);
     load(bais);
   }
+
+  private String stream2String(InputStream in) {
+    try {
+      ByteArrayOutputStream result = new ByteArrayOutputStream();
+      byte[] buffer = new byte[4096];
+      int length;
+      while ((length = in.read(buffer)) != -1) {
+        result.write(buffer, 0, length);
+      }
+
+      return result.toString(StandardCharsets.UTF_8.name());
+    } catch (IOException e) {
+      throw new UncheckedIOException(e);
+    }
+  }
+
+  /*
+   * Commons config 1 was used previously to implement this class. Commons config 1 required
+   * escaping interpolation. This escaping is no longer required with commmons config 2.
If
+   * interpolation is escaped, then this API behaves differently. This function suppresses
escaped
+   * interpolation in order to maintain behavior for reading.
+   */
+  private Reader cleanUp(InputStream in) {
+    return new StringReader(stream2String(in).replace("\\${", "${"));
 
 Review comment:
   Is this worth keeping? It seems like it'd be better to just document the change, rather
than try to preserve old interpolation behavior.

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