/* htmlparse.cc: simple HTML parser for omega indexer
*
* ----START-LICENCE----
* Copyright 1999,2000,2001 BrightStation PLC
* Copyright 2001 Ananova Ltd
* Copyright 2002 Olly Betts
*
* 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; either version 2 of the
* License, or (at your option) any later version.
*
* 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
* -----END-LICENCE-----
*/
// This file has code from omindex + an adaptor function for recoll at the end
#include "mimehandler.h"
#include "debuglog.h"
#include "csguess.h"
#include "readfile.h"
#include "transcode.h"
#include "mimeparse.h"
#include "myhtmlparse.h"
#include "indextext.h"
#include "mh_html.h"
#include "smallut.h"
#include <iostream>
#ifndef NO_NAMESPACES
using namespace std;
#endif /* NO_NAMESPACES */
bool MimeHandlerHtml::set_document_file(const string &fn)
{
LOGDEB(("textHtmlToDoc: %s\n", fn.c_str()));
string otext;
if (!file_to_string(fn, otext)) {
LOGINFO(("textHtmlToDoc: cant read: %s\n", fn.c_str()));
return false;
}
return set_document_string(otext);
}
bool MimeHandlerHtml::set_document_string(const string& htext)
{
m_html = htext;
m_havedoc = true;
return true;
}
bool MimeHandlerHtml::next_document()
{
if (m_havedoc == false)
return false;
m_havedoc = false;
string charset = m_defcharset;
LOGDEB(("textHtmlToDoc: next_document. defcharset: %s\n",charset.c_str()));
// - We first try to convert from the default configured charset
// (which may depend of the current directory) to utf-8. If this
// fails, we keep the original text
// - During parsing, if we find a charset parameter, and it differs from
// what we started with, we abort and restart with the parameter value
// instead of the configuration one.
LOGDEB(("textHtmlToDoc: charset before parsing: [%s]\n", charset.c_str()));
MyHtmlParser result;
for (int pass = 0; pass < 2; pass++) {
string transcoded;
LOGDEB(("Html::mkDoc: pass %d\n", pass));
MyHtmlParser p;
// Try transcoding. If it fails, use original text.
if (!transcode(m_html, transcoded, charset, "UTF-8")) {
LOGERR(("textHtmlToDoc: transcode failed from cs '%s' to UTF-8\n",
charset.c_str()));
transcoded = m_html;
// We don't know the charset, at all
p.ocharset = p.charset = charset = "";
} else {
// ocharset has the putative source charset, transcoded is now
// in utf-8
p.ocharset = charset;
p.charset = "utf-8";
}
try {
p.parse_html(transcoded);
// No exception: ok?
result = p;
break;
} catch (bool diag) {
result = p;
if (diag == true)
break;
LOGDEB(("textHtmlToDoc: charset [%s] doc charset [%s]\n",
charset.c_str(),result.doccharset.c_str()));
if (!result.doccharset.empty() &&
!samecharset(result.doccharset, result.ocharset)) {
LOGDEB(("textHtmlToDoc: reparse for charsets\n"));
charset = result.doccharset;
} else {
LOGERR(("textHtmlToDoc:: error: non charset exception\n"));
return false;
}
}
}
m_metaData["origcharset"] = m_defcharset;
m_metaData["content"] = result.dump;
m_metaData["charset"] = "utf-8";
m_metaData["title"] = result.title;
m_metaData["keywords"] = result.keywords;
m_metaData["modificationdate"] = result.dmtime;
m_metaData["sample"] = result.sample;
m_metaData["mimetype"] = "text/plain";
return true;
}