separate selectors
diff --git a/src/ccnx-selectors.cpp b/src/ccnx-selectors.cpp
new file mode 100644
index 0000000..001c1b7
--- /dev/null
+++ b/src/ccnx-selectors.cpp
@@ -0,0 +1,120 @@
+#include "ccnx-selectors.h"
+#include "ccnx-common.h"
+#include <boost/lexical_cast.hpp>
+
+namespace Ccnx {
+
+Selectors::Selectors()
+ : m_maxSuffixComps(-1)
+ , m_minSuffixComps(-1)
+ , m_answerOriginKind(AOK_DEFAULT)
+ , m_interestLifetime(-1.0)
+ , m_scope(-1)
+ , m_childSelector(DEFAULT)
+{
+}
+
+Selectors::Selectors(const Selectors &other)
+{
+ m_maxSuffixComps = other.m_maxSuffixComps;
+ m_minSuffixComps = other.m_minSuffixComps;
+ m_answerOriginKind = other.m_answerOriginKind;
+ m_interestLifetime = other.m_interestLifetime;
+ m_scope = other.m_scope;
+ m_childSelector = other.m_childSelector;
+ m_publisherPublicKeyDigest = other.m_publisherPublicKeyDigest;
+}
+
+bool
+Selectors::operator == (const Selectors &other)
+{
+ return m_maxSuffixComps == other.m_maxSuffixComps
+ && m_minSuffixComps == other.m_minSuffixComps
+ && m_answerOriginKind == other.m_answerOriginKind
+ && (m_interestLifetime - other.m_interestLifetime) < 10e-4
+ && m_scope == other.m_scope
+ && m_childSelector == other.m_childSelector;
+}
+
+bool
+Selectors::isEmpty() const
+{
+ return m_maxSuffixComps == -1
+ && m_minSuffixComps == -1
+ && m_answerOriginKind == AOK_DEFAULT
+ && (m_interestLifetime - (-1.0)) < 10e-4
+ && m_scope == -1
+ && m_childSelector == DEFAULT;
+}
+
+
+CcnxCharbufPtr
+Selectors::toCcnxCharbuf() const
+{
+ if (isEmpty())
+ {
+ return CcnxCharbuf::Null;
+ }
+ CcnxCharbufPtr ptr(new CcnxCharbuf());
+ ccn_charbuf *cbuf = ptr->getBuf();
+ ccn_charbuf_append_tt(cbuf, CCN_DTAG_Interest, CCN_DTAG);
+ ccn_charbuf_append_tt(cbuf, CCN_DTAG_Name, CCN_DTAG);
+ ccn_charbuf_append_closer(cbuf); // </Name>
+
+ if (m_maxSuffixComps < m_minSuffixComps)
+ {
+ boost::throw_exception(InterestSelectorException() << error_info_str("MaxSuffixComps = " + boost::lexical_cast<string>(m_maxSuffixComps) + " is smaller than MinSuffixComps = " + boost::lexical_cast<string>(m_minSuffixComps)));
+ }
+
+ if (m_maxSuffixComps > 0)
+ {
+ ccnb_tagged_putf(cbuf, CCN_DTAG_MaxSuffixComponents, "%d", m_maxSuffixComps);
+ }
+
+ if (m_minSuffixComps > 0)
+ {
+ ccnb_tagged_putf(cbuf, CCN_DTAG_MinSuffixComponents, "%d", m_minSuffixComps);
+ }
+
+ if (m_answerOriginKind != AOK_DEFAULT)
+ {
+ // it was not using "ccnb_tagged_putf" in ccnx c code, no idea why
+ ccn_charbuf_append_tt(cbuf, CCN_DTAG_AnswerOriginKind, CCN_DTAG);
+ ccnb_append_number(cbuf, m_answerOriginKind);
+ ccn_charbuf_append_closer(cbuf); // <AnswerOriginKind>
+ }
+
+ if (m_scope != -1)
+ {
+ ccnb_tagged_putf(cbuf, CCN_DTAG_Scope, "%d", m_scope);
+ }
+
+ if (m_interestLifetime > 0.0)
+ {
+ // Ccnx timestamp unit is weird 1/4096 second
+ // this is from their code
+ unsigned lifetime = 4096 * (m_interestLifetime + 1.0/8192.0);
+ if (lifetime == 0 || lifetime > (30 << 12))
+ {
+ boost::throw_exception(InterestSelectorException() << error_info_str("Ccnx requires 0 < lifetime < 30.0. lifetime= " + boost::lexical_cast<string>(m_interestLifetime)));
+ }
+ unsigned char buf[3] = {0};
+ for (int i = sizeof(buf) - 1; i >= 0; i--, lifetime >>= 8)
+ {
+ buf[i] = lifetime & 0xff;
+ }
+ ccnb_append_tagged_blob(cbuf, CCN_DTAG_InterestLifetime, buf, sizeof(buf));
+ }
+
+ if (m_childSelector != DEFAULT)
+ {
+ ccnb_tagged_putf(cbuf, CCN_DTAG_ChildSelector, "%d", m_childSelector);
+ }
+
+
+ ccn_charbuf_append_closer(cbuf); // </Interest>
+
+ return ptr;
+}
+
+} // Ccnx