add functions and interface to display the duplicates of a result document

src/query/docseq.h

@@ -108,6 +108,11 @@ class DocSequence {
     {
 	return -1;
     }
+    /** Get duplicates. */
+    virtual bool docDups(const Rcl::Doc&, std::vector<Rcl::Doc>&)
+    {
+	return false;
+    }
 
     virtual bool getEnclosing(Rcl::Doc&, Rcl::Doc&) = 0;
 
@@ -185,6 +190,13 @@ public:
 	    return false;
 	return m_seq->getAbstract(doc, abs);
     }
+    /** Get duplicates. */
+    virtual bool docDups(const Rcl::Doc& doc, std::vector<Rcl::Doc>& dups)
+    {
+	if (m_seq.isNull())
+	    return false;
+	return m_seq->docDups(doc, dups);
+    }
 
     virtual bool snippetsCapable()
     {

src/query/docseqdb.cpp

@@ -239,3 +239,12 @@ bool DocSequenceDb::setQuery()
     }
     return m_lastSQStatus;
 }
+
+bool DocSequenceDb::docDups(const Rcl::Doc& doc, std::vector<Rcl::Doc>& dups)
+{
+    if (m_q->whatDb()) {
+	return m_q->whatDb()->docDups(doc, dups);
+    } else {
+	return false;
+    }
+}

src/query/docseqdb.h

@@ -39,6 +39,7 @@ class DocSequenceDb : public DocSequence {
     virtual bool getAbstract(Rcl::Doc &doc, vector<string>&);
     virtual int getFirstMatchPage(Rcl::Doc&, std::string& term);
     virtual bool getEnclosing(Rcl::Doc& doc, Rcl::Doc& pdoc);
+    virtual bool docDups(const Rcl::Doc& doc, std::vector<Rcl::Doc>& dups);
     virtual string getDescription();
     virtual list<string> expand(Rcl::Doc &doc);
     virtual bool canFilter() {return true;}

src/query/reslistpager.cpp

@@ -255,6 +255,15 @@ void ResListPager::displayDoc(RclConfig *config, int i, Rcl::Doc& doc,
 	linksbuf << "&nbsp;&nbsp;" << snipsbuf.str();
     }
 
+    string collapscnt;
+    if (doc.getmeta(Rcl::Doc::keycc, &collapscnt) && !collapscnt.empty()) {
+	ostringstream collpsbuf;
+	int clc = atoi(collapscnt.c_str()) + 1;
+	collpsbuf << "<a href=\"D" << docnumforlinks << "\">" 
+		  << trans("Dups") << "(" << clc << ")" << "</a>&nbsp;&nbsp;";
+	linksbuf << "&nbsp;&nbsp;" << collpsbuf.str();
+    }
+
     // Build the result list paragraph:
 
     // Subheader: this is used by history