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/*
** Copyright 2003, Double Precision Inc.
**
** See COPYING for distribution information.
*/
#include "nntpnewsrc.H"
#include <sstream>
using namespace std;
mail::nntp::newsrc::newsrc() : subscribed(true)
{
}
mail::nntp::newsrc::~newsrc()
{
}
mail::nntp::newsrc::newsrc(string s) : subscribed(true)
{
if (s.size() == 0 || s[0] == '#')
return;
string::iterator b=s.begin(), e=s.end();
while (b != e && !unicode_isspace((unsigned char)*b))
{
if (*b == ':')
{
newsgroupname=string(s.begin(), b);
break;
}
if (*b == '!')
{
subscribed=false;
newsgroupname=string(s.begin(), b);
break;
}
b++;
}
while (b != e)
{
if (unicode_isspace((unsigned char)*b) || *b == ',')
{
b++;
continue;
}
string::iterator p=b;
while (b != e)
{
if (unicode_isspace((unsigned char)*b) || *b == ',')
break;
b++;
}
string range=string(p, b);
msgnum_t firstMsg=0, lastMsg=0;
char dummy;
istringstream i(range);
i >> firstMsg >> dummy >> lastMsg;
if (firstMsg > 0)
{
if (dummy == '-' && lastMsg >= firstMsg)
;
else
lastMsg=firstMsg;
if (msglist.size() > 0)
{
msgnum_t ending=msglist.end()[-1].second;
if (ending+1 == firstMsg)
{
msglist.end()[-1].second=lastMsg;
continue;
}
if (ending >= firstMsg)
continue; // Error -- ignore
}
msglist.push_back( make_pair(firstMsg, lastMsg));
}
}
}
mail::nntp::newsrc::operator string() const
{
ostringstream o;
o << newsgroupname << (subscribed ? ":":"!");
string sep=" ";
vector< pair<msgnum_t, msgnum_t> >::const_iterator b=msglist.begin(),
e=msglist.end();
while (b != e)
{
o << sep;
sep=",";
o << b->first;
if (b->second > b->first)
o << "-" << b->second;
b++;
}
return o.str();
}
// Mark msg as read
void mail::nntp::newsrc::read(msgnum_t m)
{
vector< pair<msgnum_t, msgnum_t> >::iterator b=msglist.begin(),
e=msglist.end();
// We typically do stuff at the end of the list
while (b != e)
{
--e;
if (e->first > m)
continue;
if (m <= e->second)
return; // Already marked read
bool growThis= e->second + 1 == m; // Grow this entry
bool growNext= e != msglist.end() && m + 1 == e[1].first;
if (growThis)
{
if (growNext) // Merge two ranges
{
e->second=e[1].second;
msglist.erase(e+1);
return;
}
++e->second;
return;
}
if (growNext)
{
e[1].first--;
return;
}
msglist.insert(e+1, make_pair(m, m));
return;
}
if (msglist.size() > 0 && m + 1 && msglist[0].first)
{
msglist[0].first--;
return;
}
msglist.insert(msglist.begin(), make_pair(m, m));
}
void mail::nntp::newsrc::unread(msgnum_t m)
{
vector< pair<msgnum_t, msgnum_t> >::iterator b=msglist.begin(),
e=msglist.end();
while (b != e)
{
--e;
if (e->second < m)
break;
if (e->first > m)
continue;
if (e->first == e->second) // Delete this range
{
msglist.erase(e);
break;
}
if (e->first == m)
{
++e->first;
break;
}
if (e->second == m)
{
--e->second;
break;
}
// Split
msglist.insert(e+1, make_pair(m+1, e->second));
e->second=m-1;
break;
}
}
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