131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
/* htmlparse.cc: simple HTML parser for omega indexer
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*
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* ----START-LICENCE----
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* Copyright 1999,2000,2001 BrightStation PLC
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* Copyright 2001 Ananova Ltd
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* Copyright 2002 Olly Betts
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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* -----END-LICENCE-----
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*/
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// This file has code from omindex + an adaptor function for recoll at the end
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#include "mimehandler.h"
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#include "debuglog.h"
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#include "csguess.h"
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#include "readfile.h"
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#include "transcode.h"
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#include "mimeparse.h"
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#include "myhtmlparse.h"
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#include "indextext.h"
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#include "mh_html.h"
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#include "smallut.h"
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#include <iostream>
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#ifndef NO_NAMESPACES
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using namespace std;
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#endif /* NO_NAMESPACES */
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bool MimeHandlerHtml::set_document_file(const string &fn)
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{
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LOGDEB(("textHtmlToDoc: %s\n", fn.c_str()));
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string otext;
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if (!file_to_string(fn, otext)) {
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LOGINFO(("textHtmlToDoc: cant read: %s\n", fn.c_str()));
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return false;
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}
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return set_document_string(otext);
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}
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bool MimeHandlerHtml::set_document_string(const string& htext)
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{
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m_html = htext;
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m_havedoc = true;
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return true;
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}
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bool MimeHandlerHtml::next_document()
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{
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if (m_havedoc == false)
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return false;
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m_havedoc = false;
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string charset = m_defcharset;
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LOGDEB(("textHtmlToDoc: next_document. defcharset: %s\n",charset.c_str()));
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// - We first try to convert from the default configured charset
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// (which may depend of the current directory) to utf-8. If this
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// fails, we keep the original text
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// - During parsing, if we find a charset parameter, and it differs from
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// what we started with, we abort and restart with the parameter value
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// instead of the configuration one.
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LOGDEB(("textHtmlToDoc: charset before parsing: [%s]\n", charset.c_str()));
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MyHtmlParser result;
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for (int pass = 0; pass < 2; pass++) {
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string transcoded;
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LOGDEB(("Html::mkDoc: pass %d\n", pass));
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MyHtmlParser p;
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// Try transcoding. If it fails, use original text.
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if (!transcode(m_html, transcoded, charset, "UTF-8")) {
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LOGERR(("textHtmlToDoc: transcode failed from cs '%s' to UTF-8\n",
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charset.c_str()));
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transcoded = m_html;
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// We don't know the charset, at all
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p.ocharset = p.charset = charset = "";
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} else {
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// ocharset has the putative source charset, transcoded is now
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// in utf-8
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p.ocharset = charset;
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p.charset = "utf-8";
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}
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try {
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p.parse_html(transcoded);
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// No exception: ok?
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result = p;
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break;
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} catch (bool diag) {
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result = p;
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if (diag == true)
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break;
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LOGDEB(("textHtmlToDoc: charset [%s] doc charset [%s]\n",
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charset.c_str(),result.doccharset.c_str()));
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if (!result.doccharset.empty() &&
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!samecharset(result.doccharset, result.ocharset)) {
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LOGDEB(("textHtmlToDoc: reparse for charsets\n"));
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charset = result.doccharset;
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} else {
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LOGERR(("textHtmlToDoc:: error: non charset exception\n"));
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return false;
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}
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}
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}
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m_metaData["origcharset"] = m_defcharset;
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m_metaData["content"] = result.dump;
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m_metaData["charset"] = "utf-8";
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m_metaData["title"] = result.title;
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m_metaData["keywords"] = result.keywords;
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m_metaData["author"] = result.author;
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m_metaData["modificationdate"] = result.dmtime;
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m_metaData["sample"] = result.sample;
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m_metaData["mimetype"] = "text/plain";
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return true;
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}
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