arrierego.cpp

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#ifdef USENEF
#include <qimage.h>
#include "arrierego.h"

struct CArriere_dataRecord
{
    UInt16 uid;
    UInt16 nParagraphs;
    UInt32 size;
    UInt8 type;
    UInt8 reserved;
};

int CArriere::HeaderSize()
{
    return 10;
}

void CArriere::GetHeader(UInt16& uid, UInt16& nParagraphs, UInt32& size, UInt8& type, UInt8& reserved)
{
    CArriere_dataRecord thishdr;
    unsuspend();
    fread(&thishdr, 1, HeaderSize(), fin);
    uid = ntohs(thishdr.uid);
    nParagraphs = ntohs(thishdr.nParagraphs);
    size = ntohl(thishdr.size);
    type = thishdr.type;
    reserved = thishdr.reserved;
    //    qDebug("UID:%u Paras:%u Size:%u Type:%u Reserved:%u", uid, nParagraphs, size, (unsigned int)type, (unsigned int)reserved);
//    for (int i = 0; i < sizeof(thishdr); i++)
//      printf("%d %x\n", i, (int)(((char *)(&thishdr))[i]));
}

bool CArriere::CorrectDecoder()
{
  char  * type = (char*)(&(head.type));
  for (int i = 0; i < 8; ++i) qDebug("%c", type[i]);
    return (memcmp(&head.type, "ArriereG", 8) == 0);
}

int CArriere::bgetch()
{
    int ch = EOF;
    if (bufferpos >= buffercontent)
    {
        if (bufferrec >= ntohs(head.recordList.numRecords) - 1)
        {
                return EOF;
        }
        if (isEndOfSection(bufferrec))
        {
                return EOF;
        }
        if (!expand(bufferrec+1))
        {
                return EOF;
        }
        mystyle.unset();
        if (m_ParaOffsets[m_nextParaIndex] == 0)
        {
            while (m_ParaOffsets[m_nextParaIndex+1] == 0)
            {
                m_nextParaIndex++;
            }
        }
        mystyle.setExtraSpace((m_ParaAttrs[m_nextParaIndex]&7)*2);
    }
    if (bufferpos == m_nextPara)
    {
        while (bufferpos == m_nextPara)
        {
            m_nextParaIndex++;
            if (m_nextParaIndex == m_nParas)
            {
                m_nextPara = -1;
            }
            else
            {
                m_nextPara += m_ParaOffsets[m_nextParaIndex];
            }
        }
        mystyle.unset();
        mystyle.setExtraSpace((m_ParaAttrs[m_nextParaIndex]&7)*2);
        if (m_lastBreak == locate())
        {
            currentpos++;
            ch = expandedtextbuffer[bufferpos++];
        }
        else
        {
            ch = 10;
        }
    }
    else
    {
        currentpos++;
        ch = expandedtextbuffer[bufferpos++];
    }
    return ch;
}

tchar CArriere::getch(bool fast)
{
    mystyle.clearPicture();
    return getch_base(fast);
}

/*
void CArriere::setlink(QString& fn, const QString& wrd)
{
    fn = wrd;
}
*/

QImage* CArriere::imagefromdata(UInt8* imgbuffer, UInt32 imgsize)
{
    QByteArray arr;
    arr.assign((const char*)imgbuffer, imgsize);

    QImage* qimage = new QImage(arr);

    return qimage;
}

void CArriere::start2endSection()
{
    m_currentstart = NEFstartSection();
    m_currentend = NEFendSection();
}

unsigned long CArriere::NEFstartSection()
{
//inefficient - Should calc start/end of section on entry to section?
    UInt16 thishdr_uid, thishdr_nParagraphs;
    UInt32 thishdr_size;
    UInt8 thishdr_type, thishdr_reserved;
    unsigned long textlength = currentpos-bufferpos;
    for (UInt16 recptr = bufferrec-1; recptr >= 1; recptr--)
    {
        gotorecordnumber(recptr);
        //qDebug("recptr:%u", recptr);
        GetHeader(thishdr_uid, thishdr_nParagraphs, thishdr_size, thishdr_type, thishdr_reserved);
        if (thishdr_type < 2)
        {
            if ((thishdr_reserved && continuation_bit) == 0) break;
            textlength -= thishdr_size;
            //qDebug("Textlength:%u, reserved:%u, recptr:%u", textlength, thishdr_reserved, recptr);
        }
    }
    return textlength;
}

unsigned long CArriere::NEFendSection()
{
//inefficient - Should calc start/end of section on entry to section?
    unsigned long textlength = currentpos-bufferpos+buffercontent;
    gotorecordnumber(bufferrec);
    UInt16 thishdr_uid, thishdr_nParagraphs;
    UInt32 thishdr_size;
    UInt8 thishdr_type, thishdr_reserved;
    GetHeader(thishdr_uid, thishdr_nParagraphs, thishdr_size, thishdr_type, thishdr_reserved);
    if ((thishdr_reserved && continuation_bit) != 0)
      {
        for (UInt16 recptr = bufferrec+1; recptr < ntohs(head.recordList.numRecords); recptr++)
          {
            gotorecordnumber(recptr);
            UInt16 thishdr_uid, thishdr_nParagraphs;
            UInt32 thishdr_size;
            UInt8 thishdr_type, thishdr_reserved;
            GetHeader(thishdr_uid, thishdr_nParagraphs, thishdr_size, thishdr_type, thishdr_reserved);
            //  qDebug("recptr %u bufferrec %u type %u m_reserved %u", recptr, bufferrec, typ
            if (thishdr_type < 2)
              {
                textlength += thishdr_size;
                if ((thishdr_reserved && continuation_bit) == 0) break;
              }
          }
      }
    return textlength;
}

#ifndef __STATIC
extern "C"
{
  CExpander* newcodec() { return new CArriere; }
}
#endif
#endif

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