/* 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 */
MimeHandler::Status
MimeHandlerHtml::mkDoc(RclConfig *conf, const string &fn,
const string &mtype, Rcl::Doc &docout, string&)
{
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 MimeHandler::MHError;
}
return mkDoc(conf, fn, otext, mtype, docout);
}
MimeHandler::Status
MimeHandlerHtml::mkDoc(RclConfig *conf, const string &,
const string& htext,
const string &mtype, Rcl::Doc &docout)
{
//LOGDEB(("textHtmlToDoc: htext: %s\n", htext.c_str()));
// Character set handling: the initial guessed charset depends on
// external factors: possible hint (ie mime charset in a mail
// message), charset guessing, or default configured charset.
string charset;
if (!charsethint.empty()) {
charset = charsethint;
} else if (conf->getGuessCharset()) {
charset = csguess(htext, conf->getDefCharset());
} else
charset = conf->getDefCharset();
// - 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 pres;
for (int pass = 0; pass < 2; pass++) {
string transcoded;
MyHtmlParser p;
// Try transcoding. If it fails, use original text.
if (!transcode(htext, transcoded, charset, "UTF-8")) {
LOGERR(("textHtmlToDoc: transcode failed from cs '%s' to UTF-8\n",
charset.c_str()));
transcoded = htext;
// 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);
} catch (bool) {
pres = p;
if (!pres.doccharset.empty() &&
!samecharset(pres.doccharset, pres.ocharset)) {
LOGDEB(("textHtmlToDoc: charset '%s' doc charset '%s',"
"reparse\n", charset.c_str(),pres.doccharset.c_str()));
charset = pres.doccharset;
} else {
LOGERR(("textHtmlToDoc:: error: non charset exception\n"));
return MimeHandler::MHError;
}
}
}
docout.origcharset = charset;
docout.text = pres.dump;
// LOGDEB(("textHtmlToDoc: dump : %s\n", pres.dump.c_str()));
docout.title = pres.title;
docout.keywords = pres.keywords;
docout.abstract = pres.sample;
docout.dmtime = pres.dmtime;
return MimeHandler::MHDone;
}