--- /dev/null
+/* $Id$
+
+This file is part of R²C²
+Copyright © 2010 Mikkosoft Productions, Mikko Rasa
+Distributed under the GPL
+*/
+
+#include <msp/strings/utils.h>
+#include "articlenumber.h"
+
+using namespace std;
+using namespace Msp;
+
+namespace R2C2 {
+
+ArticleNumber::ArticleNumber(unsigned n)
+{
+ Part part;
+ part.number = n;
+ part.letter = 0;
+ parts.push_back(part);
+}
+
+ArticleNumber::ArticleNumber(const string &s)
+{
+ vector<string> sparts = split(s, '-');
+ for(vector<string>::iterator i=sparts.begin(); i!=sparts.end(); ++i)
+ {
+ if(i->empty())
+ throw InvalidParameterValue("Malformed article number");
+
+ unsigned nondigit = i->size();
+ for(unsigned j=0; j<i->size(); ++j)
+ if(!isdigit((*i)[j]))
+ {
+ nondigit = j;
+ break;
+ }
+
+ if(!nondigit || nondigit<i->size()-1)
+ throw InvalidParameterValue("Malformed article number");
+
+ Part part;
+ part.number = lexical_cast<unsigned>(i->substr(0, nondigit));
+ part.letter = nondigit<i->size() ? (*i)[nondigit] : 0;
+ parts.push_back(part);
+ }
+}
+
+string ArticleNumber::str() const
+{
+ string result;
+ for(vector<Part>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+ {
+ if(!result.empty())
+ result += '-';
+
+ result += lexical_cast(i->number);
+ if(i->letter)
+ result += i->letter;
+ }
+
+ return result;
+}
+
+bool ArticleNumber::operator<(const ArticleNumber &other) const
+{
+ return parts<other.parts;
+}
+
+
+bool ArticleNumber::Part::operator<(const Part &other) const
+{
+ if(number!=other.number)
+ return number<other.number;
+ return letter<other.letter;
+}
+
+
+void operator>>(const LexicalConverter &conv, ArticleNumber &art_nr)
+{
+ art_nr = ArticleNumber(conv.get());
+}
+
+void operator<<(LexicalConverter &conv, const ArticleNumber &art_nr)
+{
+ conv.result(art_nr.str());
+}
+
+} // namespace R2C2