/* Copyright (C) 2014-2019 J.F.Dockes * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "autoconfig.h" #include #include #include #include #include #include "preview_plaintorich.h" #include "plaintorich.h" #include "log.h" #include "guiutils.h" #include "cancelcheck.h" using namespace std; PlainToRichQtPreview::PlainToRichQtPreview() { clear(); } void PlainToRichQtPreview::clear() { m_curanchor = 1; m_lastanchor = 0; m_groupanchors.clear(); m_groupcuranchors.clear(); QSettings settings; m_spacehack = settings.value("anchorSpcHack", 0).toBool(); } bool PlainToRichQtPreview::haveAnchors() { return m_lastanchor != 0; } string PlainToRichQtPreview::PlainToRichQtPreview::header() { if (m_inputhtml) { return cstr_null; } switch (prefs.previewPlainPre) { case PrefsPack::PP_BR: m_eolbr = true; return ""; case PrefsPack::PP_PRE: m_eolbr = false; return "

";
    case PrefsPack::PP_PREWRAP:
    default:
        m_eolbr = false;
        return ""
            "";
    }
}

string PlainToRichQtPreview::startMatch(unsigned int grpidx)
{
    LOGDEB2("startMatch, grpidx " << grpidx << "\n");
    grpidx = m_hdata->index_term_groups[grpidx].grpsugidx;
    LOGDEB2("startMatch, ugrpidx " << grpidx << "\n");
    m_groupanchors[grpidx].push_back(++m_lastanchor);
    m_groupcuranchors[grpidx] = 0;
    // We used to create the region as:
    //     term
    // For some reason, this caused problems with the display of some
    // Tamil text (qt bug?). Just inserting a space character after
    // the opening  section. Also: having  before the match
    // term causes the same problem (so not a possible fix).
    string hackspace = m_spacehack? " " : "";
    string startmarker{
        "" + hackspace +
            ""
            };
    return startmarker;
}

string  PlainToRichQtPreview::endMatch()
{
    return "";
}

string  PlainToRichQtPreview::termAnchorName(int i) const
{
    static const char *termAnchorNameBase = "TRM";
    char acname[sizeof(termAnchorNameBase) + 20];
    sprintf(acname, "%s%d", termAnchorNameBase, i);
    return string(acname);
}

string  PlainToRichQtPreview::startChunk()
{
    return "";
}

int  PlainToRichQtPreview::nextAnchorNum(int grpidx)
{
    LOGDEB2("nextAnchorNum: group " << grpidx << "\n");
    auto curit = m_groupcuranchors.find(grpidx);
    auto vecit = m_groupanchors.find(grpidx);
    if (grpidx == -1 || curit == m_groupcuranchors.end() ||
        vecit == m_groupanchors.end()) {
        if (m_curanchor >= m_lastanchor)
            m_curanchor = 1;
        else
            m_curanchor++;
    } else {
        if (curit->second >= vecit->second.size() -1)
            m_groupcuranchors[grpidx] = 0;
        else 
            m_groupcuranchors[grpidx]++;
        m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
        LOGDEB2("nextAnchorNum: curanchor now " << m_curanchor << "\n");
    }
    return m_curanchor;
}

int  PlainToRichQtPreview::prevAnchorNum(int grpidx)
{
    auto curit = m_groupcuranchors.find(grpidx);
    auto vecit = m_groupanchors.find(grpidx);
    if (grpidx == -1 || curit == m_groupcuranchors.end() ||
        vecit == m_groupanchors.end()) {
        if (m_curanchor <= 1)
            m_curanchor = m_lastanchor;
        else
            m_curanchor--;
    } else {
        if (curit->second <= 0)
            m_groupcuranchors[grpidx] = vecit->second.size() -1;
        else 
            m_groupcuranchors[grpidx]--;
        m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
    }
    return m_curanchor;
}

QString  PlainToRichQtPreview::curAnchorName() const
{
    return u8s2qs(termAnchorName(m_curanchor));
}


ToRichThread::ToRichThread(const string &i, const HighlightData& hd,
                           std::shared_ptr ptr,
                           QStringList& qrichlist,
                           QObject *parent)
    : QThread(parent), m_input(i), m_hdata(hd), m_ptr(ptr), m_output(qrichlist)
{
}

// Insert into editor by chunks so that the top becomes visible
// earlier for big texts. This provokes some artifacts (adds empty line),
// so we can't set it too low.
#define CHUNKL 500*1000

void ToRichThread::run()
{
    list out;
    try {
        m_ptr->plaintorich(m_input, out, m_hdata, CHUNKL);
    } catch (CancelExcept) {
        return;
    }

    // Convert C++ string list to QString list
    for (const auto& chunk : out) {
        m_output.push_back(u8s2qs(chunk));
    }
}