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/* $Id: Summary.cpp,v 1.2 2004/08/24 21:52:39 terpstra Exp $
*
* Summary.cpp - Helper which can load a message given MessageId
*
* Copyright (C) 2002 - Wesley W. Terpstra
*
* License: GPL
*
* Authors: 'Wesley W. Terpstra' <wesley@terpstra.ca>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define _XOPEN_SOURCE 500
#define _FILE_OFFSET_BITS 64
#include <mimelib/message.h>
#include <zlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <Keys.h>
#include <XmlEscape.h>
#include <memory>
#include <cerrno>
#include <cstring>
#include "Summary.h"
using namespace std;
string Summary::load(Reader* r, const Config& cfg)
{
// Use the prefix limited search
auto_ptr<Walker> w(r->seek(LU_SUMMARY + id_.raw(), "", Forward));
// This will only walk records matching this id
int ok;
mbox_ = "";
while ((ok = w->advance()) != -1)
{
if (w->key.length() < 1 + 8 + 1)
return "invalid mbox entry -- way too short";
// We use this for getting an unsigned value below.
const unsigned char* k = (const unsigned char*)w->key.c_str()+1+8;
// read all the values
switch (*k)
{
case LU_MESSAGE_DELETED:
deleted_ = true;
break;
case LU_MESSAGE_AUTHOR_EMAIL:
author_email_ = w->key.substr(1+8+1, string::npos);
if (cfg.hide_email)
{
string::size_type x = author_email_.find('@');
if (x != string::npos) author_email_.resize(x);
if (!author_name_.length()) author_name_ = author_email_;
author_email_ = "";
}
break;
case LU_MESSAGE_AUTHOR_NAME:
if (w->key.length() > 1+8+1)
author_name_ = w->key.substr(1+8+1, string::npos);
break;
case LU_MESSAGE_SUBJECT:
subject_ = w->key.substr(1+8+1, string::npos);
break;
case LU_MESSAGE_MBOX:
if (w->key.length() < 1+8+1+1+12)
return "invalid mbox entry -- too short";
//!!! could be more careful about corrupt dbs here
++k;
mbox_ = (const char*)k; // null terminated
k += mbox_.length();
int i;
offset_ = 0;
for (i = 0; i < 8; ++i)
{
offset_ <<= 8;
offset_ |= *++k;
}
length_ = 0;
for (i = 8; i < 12; ++i)
{
length_ <<= 8;
length_ |= *++k;
}
mboxs_.insert(mbox_);
break;
default:
return "unknown mbox summary control code";
}
}
if (mbox_ == "")
return "not in a mailbox";
if (ok == -1 && errno != 0)
return string("Walker::advance:") + strerror(errno);
return "";
}
string Summary::message(const string& dbdir, DwMessage& message) const
{
string name = dbdir + "/" + mbox_;
int fd = open(name.c_str(), O_RDONLY);
if (fd == -1)
return name + ":open:" + strerror(errno);
if (lseek(fd, offset_, SEEK_SET) != offset_)
{
close(fd);
return name + ":lseek:" + strerror(errno);
}
gzFile gzf = gzdopen(fd, "rb");
if (gzf == 0)
{
close(fd);
return name + ":gzdopen:" + strerror(errno);
}
DwString str;
char buf[8192];
unsigned long want = length_;
while (want)
{
long get;
if (want < sizeof(buf))
get = want;
else get = sizeof(buf);
if (gzread(gzf, buf, get) != get)
{
gzclose(gzf);
return name + ":gzread:" + strerror(errno);
}
str.append(buf, get);
want -= get;
}
gzclose(gzf); // also closes fd
message.FromString(str);
message.Parse();
return "";
}
ostream& operator << (ostream& o, const Summary& s)
{
o << "<summary>"
<< "<id>" << s.id().serialize() << "</id>"
<< "<timestamp>" << s.id().timestamp() << "</timestamp>";
if (s.deleted())
o << "<deleted/>";
if (s.subject().length() > 0)
o << "<subject>" << xmlEscape << s.subject() << "</subject>";
o << "<email";
if (s.author_email().length() > 0)
o << " address=\"" << xmlEscape << s.author_email() << "\"";
if (s.author_name().length() > 0)
o << " name=\"" << xmlEscape << s.author_name() << "\"";
o << "/></summary>";
return o;
}
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