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Copy pathPVTFile.cpp
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198 lines (165 loc) · 4.18 KB
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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "PVTFile.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
__fastcall TPVTFile::TPVTFile()
{
m_pParser = new TNMEAParser;
m_bMsgSent = false;
}
__fastcall TPVTFile::TPVTFile(AnsiString asFileName)
{
m_pParser = new TNMEAParser;
m_asFileName = asFileName;
m_bMsgSent = false;
}
__fastcall TPVTFile::~TPVTFile()
{
delete m_pParser;
}
void __fastcall TPVTFile::Load()
{
if(m_pParser->Ready)
{
TMemoryStream *pStream = new TMemoryStream;
char *pBuffer = m_pParser->Buffer;
tagPVTHeader sPVTHdr;
pStream->LoadFromFile(m_asFileName);
//pStream->Seek(0, soFromBeginning);
while(pStream->Read(&sPVTHdr, sizeof(sPVTHdr)) == (int)sizeof(sPVTHdr))
{
if(pStream->Read(pBuffer, sPVTHdr.dwLength) == (int)sPVTHdr.dwLength)
{
pBuffer[sPVTHdr.dwLength] = 0;
AnsiString asBuffer = AnsiString(pBuffer);
AnsiString asSentence = asBuffer.SubString(1, 7);
if(asSentence == AnsiString("$GPGGA,") ||
asSentence == AnsiString("$GPGSA,") ||
asSentence == AnsiString("$GPRMC,"))
{
if(!m_bMsgSent)
{
m_bMsgSent = true;
SendMessage(Application->MainForm->Handle, PVTFILE_MSG_NEWTRACK,
0, (LPARAM)(ExtractFileName(ChangeFileExt(m_asFileName, "")).c_str()));
Application->ProcessMessages();
}
m_pParser->AddString(asBuffer);
}
}
else break;
}
/*
bool inMessage = false;
char *pBuffer = m_pParser->Buffer;
int nBuffSize = m_pParser->BufferSize - 4;
int pos = 0, countdown = 0;
unsigned char ch;
while(pStream->Read(&ch, 1))
{
if(ch == '$')
{
inMessage = true;
pos = 0;
countdown = 0;
pBuffer[pos++] = ch;
continue;
}
if(inMessage)
{
pBuffer[pos++] = ch;
if(pos == 7)
{
pBuffer[pos] = '\0';
if(strcmp(pBuffer, "$GPGGA,") &&
strcmp(pBuffer, "$GPGSA,") &&
strcmp(pBuffer, "$GPRMC,"))
{
pos = 0;
countdown = 0;
inMessage = false;
}
continue;
}
else if(pos > nBuffSize)
{
pos = 0;
countdown = 0;
inMessage = false;
continue;
}
if(ch == '*')
{
countdown = 2;
continue;
}
if(countdown)
{
if(!IsHex(ch))
{
pos = 0;
countdown = 0;
inMessage = false;
continue;
}
countdown--;
if(!countdown)
{
pBuffer[pos] = '\0';
pos = 0;
countdown = 0;
inMessage = false;
if(!m_bMsgSent)
{
m_bMsgSent = true;
SendMessage(Application->MainForm->Handle, PVTFILE_MSG_NEWTRACK,
0, (LPARAM)(ExtractFileName(ChangeFileExt(m_asFileName, "")).c_str()));
Application->ProcessMessages();
}
//m_pParser->ParseBuffer();
m_pParser->AddString(AnsiString(pBuffer));
}
}
}
}
*/
delete pStream;
m_pParser->ParseStrings();
}
}
void __fastcall TPVTFile::Load(AnsiString asFileName)
{
m_asFileName = asFileName;
Load();
}
PGPXTrack __fastcall TPVTFile::GetTrack()
{
PGPXTrack pTrack = NULL;
if(m_pParser->Ready)
{
pTrack = m_pParser->Track;
if(pTrack)
{
pTrack->m_asSrc = AnsiString("Magellan eXplorist x10 debug file");
pTrack->m_asName = ExtractFileName(ChangeFileExt(m_asFileName, ""));
pTrack->m_asFileName = ExtractFileName(m_asFileName);
}
}
return pTrack;
}
void __fastcall TPVTFile::SetFile(AnsiString value)
{
if(m_asFileName != value) {
m_asFileName = value;
}
}
AnsiString __fastcall TPVTFile::GetFile()
{
return m_asFileName;
}
bool __fastcall TPVTFile::IsHex(char ch)
{
return ((ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'F'));
}