Interest: Added Interest::toUri().

include/ndn-cpp/interest.hpp

@@ -302,6 +302,14 @@ public:
     wireDecode(&input[0], input.size(), wireFormat);
   }
   
+  /**
+   * Encode the name according to the "NDN URI Scheme".  If there are interest selectors, append "?" and
+   * added the selectors as a query string.  For example "/test/name?ndn.ChildSelector=1".
+   * @return The URI string.
+   */
+  std::string
+  toUri() const;
+  
   /**
    * Set the interestStruct to point to the components in this interest, without copying any memory.
    * WARNING: The resulting pointers in interestStruct are invalid after a further use of this object which could reallocate memory.

src/interest.cpp

@@ -100,6 +100,47 @@ Interest::get(struct ndn_Interest& interestStruct) const
   interestStruct.interestLifetimeMilliseconds = interestLifetimeMilliseconds_;
   nonce_.get(interestStruct.nonce);
 }
+
+string 
+Interest::toUri() const
+{
+  ostringstream selectors;
+
+  if (minSuffixComponents_ >= 0)
+    selectors << "&ndn.MinSuffixComponents=" << minSuffixComponents_;
+  if (maxSuffixComponents_ >= 0)
+    selectors << "&ndn.MaxSuffixComponents=" << maxSuffixComponents_;
+  if (childSelector_ >= 0)
+    selectors << "&ndn.ChildSelector=" << childSelector_;
+  if (answerOriginKind_ >= 0)
+    selectors << "&ndn.AnswerOriginKind=" << answerOriginKind_;
+  if (scope_ >= 0)
+    selectors << "&ndn.Scope=" << scope_;
+  if (interestLifetimeMilliseconds_ >= 0)
+    selectors << "&ndn.InterestLifetime=" << interestLifetimeMilliseconds_;
+  if (publisherPublicKeyDigest_.getPublisherPublicKeyDigest().size() > 0) {
+    selectors << "&ndn.PublisherPublicKeyDigest=";
+    Name::toEscapedString(*publisherPublicKeyDigest_.getPublisherPublicKeyDigest(), selectors);
+  }
+  if (nonce_.size() > 0) {
+    selectors << "&ndn.Nonce=";
+    Name::toEscapedString(*nonce_, selectors);
+  }
+  if (exclude_.size() > 0)
+    selectors << "&ndn.Exclude=" << exclude_.toUri();
+
+  ostringstream result;
+
+  result << name_.toUri();
+  string selectorsString(selectors.str());
+  if (selectorsString.size() > 0) {
+    // Replace the first & with ?.
+    result << "?";
+    result.write(&selectorsString[1], selectorsString.size() - 1);
+  }
   
+  return result.str();  
+}
+
 }