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#include "pdb.h"
#ifdef _WINDOWS
#include <winsock2.h>
#endif
#ifdef USEQPE
void Cpdb::suspend()
{
CExpander::suspend(fin);
}
void Cpdb::unsuspend()
{
CExpander::unsuspend(fin);
}
#endif
Cpdb::~Cpdb()
{
if (fin != NULL)
{
#ifdef USEQPE
unsuspend();
#endif
fclose(fin);
}
}
size_t Cpdb::recordpos(int n)
{
UInt16 mxn = ntohs(head.recordList.numRecords);
if (n >= mxn)
{
return file_length;
}
else
{
size_t dataoffset = sizeof(DatabaseHdrType) - sizeof(UInt16);
dataoffset += /*dataoffset%4 + */ sizeof(RecordListType) * n;
unsuspend();
fseek(fin, dataoffset, SEEK_SET);
RecordListType hdr;
fread(&hdr, 1, sizeof(hdr), fin);
return ntohl(hdr.nextRecordListID);
}
}
size_t Cpdb::recordlength(int n)
{
return recordpos(n+1)-recordpos(n);
}
void Cpdb::gotorecordnumber(int n)
{
unsuspend();
fseek(fin, recordpos(n), SEEK_SET);
}
bool Cpdb::openpdbfile(const char *src)
{
//qDebug("cpdb openfile:%s", src);
// printf("In openfile\n");
// printf("closing fin:%x\n",fin);
if (fin != NULL) fclose(fin);
// printf("opening fin\n");
fin = fopen(src,"rb");
if (fin==0)
{
return false;
}
// just holds the first few chars of the file
// char buf[0x100];
struct stat _stat;
stat(src,&_stat);
file_length = _stat.st_size;
// fseek(fin,0,SEEK_END);
// file_length = ftell(fin);
fseek(fin,0,SEEK_SET);
fread(&head, 1, sizeof(head), fin);
//qDebug("Database name:%s", head.name);
//qDebug("Total number of records:%u", ntohs(head.recordList.numRecords));
return true;
}
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