remember history of restrict subdirs in adv search

src/query/history.cpp

@@ -1,5 +1,5 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: history.cpp,v 1.6 2006-09-11 09:08:44 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: history.cpp,v 1.7 2006-09-11 12:05:39 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 /*
  *   This program is free software; you can redistribute it and/or modify
@@ -150,6 +150,20 @@ bool RclHistory::eraseAll(const string &sk)
     }
     return true;
 }
+bool RclHistory::truncate(const string &sk, unsigned int n)
+{
+    // Is this doc already in history ? If it is we remove the old entry
+    list<string> names = m_data.getNames(sk);
+    if (names.size() <= n)
+	return true;
+    unsigned int i = 0;
+    for (list<string>::const_iterator it = names.begin(); 
+	 it != names.end(); it++, i++) {
+	if (i >= n)
+	    m_data.erase(*it, sk);
+    }
+    return true;
+}
 
 
 bool RclHistory::enterString(const string sk, const string value)

src/query/history.h

@@ -16,7 +16,7 @@
  */
 #ifndef _HISTORY_H_INCLUDED_
 #define _HISTORY_H_INCLUDED_
-/* @(#$Id: history.h,v 1.4 2006-09-11 09:08:44 dockes Exp $  (C) 2004 J.F.Dockes */
+/* @(#$Id: history.h,v 1.5 2006-09-11 12:05:39 dockes Exp $  (C) 2004 J.F.Dockes */
 
 /**
  * Dynamic configuration storage
@@ -101,6 +101,7 @@ class RclHistory {
     bool enterString(const string sk, const string value);
     list<string> getStringList(const string sk);
     bool eraseAll(const string& sk);
+    bool truncate(const string& sk, unsigned int n);
 
  private:
     unsigned int m_mlen;