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///###////////////////////////////////////////////////////////////////////////
//
// Burton Computer Corporation
// http://www.burton-computer.com
// http://www.cooldevtools.com
// $Id: MailMessageReader.cc 272 2007-01-06 19:37:27Z brian $
//
// Copyright (C) 2007 Burton Computer Corporation
// ALL RIGHTS RESERVED
//
// This program is open source software; you can redistribute it
// and/or modify it under the terms of the Q Public License (QPL)
// version 1.0. Use of this software in whole or in part, including
// linking it (modified or unmodified) into other programs is
// subject to the terms of the QPL.
//
// 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
// Q Public License for more details.
//
// You should have received a copy of the Q Public License
// along with this program; see the file LICENSE.txt. If not, visit
// the Burton Computer Corporation or CoolDevTools web site
// QPL pages at:
//
// http://www.burton-computer.com/qpl.html
// http://www.cooldevtools.com/qpl.html
//
#include <cstdlib>
#include "RegularExpression.h"
#include "MailMessage.h"
#include "MailMessageList.h"
#include "LineReader.h"
#include "MultiLineString.h"
#include "MailMessageReader.h"
// Defines how many chars to deduct from content-length so that we can
// find a blank line before the message delimiter line that follows
// the message.
static const int CONTENT_LENGTH_PADDING = 10;
MailMessageReader::MailMessageReader(bool use_content_length)
: m_useContentLength(use_content_length)
{
}
MailMessageReader::~MailMessageReader()
{
}
bool MailMessageReader::findContentLength(MultiLineString *text,
int &content_length)
{
RegularExpression regex("^content-length: *([0-9]+)", 2, true);
for (int i = 0; i < text->lineCount(); ++i) {
if (regex.match(text->line(i))) {
string buffer;
content_length = max(0, atoi(regex.getMatch(1, buffer).c_str()) - CONTENT_LENGTH_PADDING);
return true;
}
}
return false;
}
OWNED MailMessage *MailMessageReader::readMessage()
{
Ref<MultiLineString> text(new MultiLineString());
if (m_useContentLength) {
readMessageWithContentLength(text.ptr());
} else {
readMessageWithBoundary(text.ptr(), false);
}
return (text->lineCount() > 0) ? new MailMessage(text) : 0;
}
void MailMessageReader::readMessageWithBoundary(MultiLineString *text,
bool append_to_last_line)
{
while (reader()->hasLine()) {
if (isNewMessageBoundary(reader()->currentLine())) {
break;
}
if (is_debug) {
cerr << "LINE: '" << reader()->currentLine() << "'" << endl;
}
if (append_to_last_line) {
text->appendToLastLine(reader()->currentLine());
append_to_last_line = false;
} else {
text->addLine(reader()->currentLine());
}
reader()->forward();
}
}
void MailMessageReader::readMessageWithContentLength(MultiLineString *text)
{
while (reader()->hasLine()) {
if (is_debug) {
cerr << "HDR: '" << reader()->currentLine() << "'" << endl;
}
text->addLine(reader()->currentLine());
if (reader()->currentLine().length() == 0) {
break;
}
reader()->forward();
}
bool should_append = false;
int content_length = 0;
if (findContentLength(text, content_length)) {
should_append = content_length > 0;
while (reader()->forward(content_length)) {
if (is_debug) {
cerr << "CL: " << content_length << ": " << reader()->currentLine() << endl;
}
text->addLine(reader()->currentLine());
}
reader()->forward();
}
readMessageWithBoundary(text, should_append);
}
bool MailMessageReader::isNewMessageBoundary(const string &line)
{
return false;
}
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