parser needed

[Giulio]

I've got to take some data from a CSV file, so i need a good string parser
to recognize data to store in variables.
using google I found the code below.
that seems to be a good solution but I had some problems using it, which
libraries should I include?

Can someone suggest me any other libraries to do what I need?

thanx alot
Giulio

--------------------------
//// Get substring, chMagic is a character which
// makes chSep act as a normal character.
// Return TRUE on success.
inline bool GetSubString(CS tring& strSub, LPCTSTR lpszFullString,
int iFullStringLen, int iSubString, TCHAR chSep,
TCHAR chMagic) {
int iPos, iPosOrig, iStartPos, iEndPos, iNumMagics;
TCHAR* pcSubString;
if((lpszFullStr ing == NULL) ||
(iFullStringLen == 0))
return FALSE;
// Find substring begin
for(iStartPos = 0; (iStartPos < iFullStringLen) && (iSubString > 0);
iStartPos++)
{
// May be separator ?
if(*(lpszFullSt ring + iStartPos) == chSep)
{
if(((iStartPos > 0) &&
(*(lpszFullStri ng + iStartPos - 1) != chMagic))
|| (iStartPos == 0))
{
// Sure it is a separator!
iSubString--;
}
}
}

// Return empty string when nothing found
if(iSubString > 0)
{
strSub.Empty();
return FALSE;
}

// Find substring end
iNumMagics = 0;
for(iEndPos = iStartPos;
iEndPos < iFullStringLen;
iEndPos++)
{
// Count magics
if(*(lpszFullSt ring + iEndPos) == chMagic)
{
iNumMagics++;
}
// May be separator ?
if(*(lpszFullSt ring + iEndPos) == chSep)
{
if(((iEndPos > 0) && (*(lpszFullStri ng + iEndPos - 1)
!= chMagic)) || (iEndPos == 0))
{
// Sure it is the end
break;
}
}
}

// Copy substring
pcSubString = strSub.GetBuffe rSetLength(
iEndPos - iStartPos - iNumMagics);
iPosOrig = iStartPos;
iEndPos -= iStartPos;
if(pcSubString != NULL)
{
for(iPos = 0; iPos < iEndPos; iPos += sizeof(TCHAR))
{
if(*(lpszFullSt ring + iPosOrig) != chMagic)
{
*(pcSubString + iPos) = *(lpszFullStrin g + iPosOrig);
}
else
{
iPos -= sizeof(TCHAR);
iEndPos -= sizeof(TCHAR);
}
iPosOrig += sizeof(TCHAR);
}
*(pcSubString + iPos) = 0;
return TRUE;
}
return FALSE;
};


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[Ron Natalie]

Re: parser needed


"Giulio" <giulio.gL.E.V. A@email.IT> wrote in message news:R_kkb.4459 8$Zh.36334@torn ado.fastwebnet. it...[color=blue]
> I've got to take some data from a CSV file, so i need a good string parser
> to recognize data to store in variables.
> using google I found the code below.
> that seems to be a good solution but I had some problems using it, which
> libraries should I include?
>[/color]
It's all written to use the MFC CString class and the stupid
windows type names. If you're not using Visual Studio, you're
probably hosed, keep looking.

[Moonlit]

Re: parser needed

Hi,

Try http://spirit.sourceforge.net/ spirit to parse the file.

Since it uses templates there is no need to compile against a library. If it
is a simple file (like csv) you can use a relatively simple parser (without
creating a ast).

Regards, Ron AF Greve.



"Giulio" <giulio.gL.E.V. A@email.IT> wrote in message
news:R_kkb.4459 8$Zh.36334@torn ado.fastwebnet. it...[color=blue]
> I've got to take some data from a CSV file, so i need a good string parser
> to recognize data to store in variables.
> using google I found the code below.
> that seems to be a good solution but I had some problems using it, which
> libraries should I include?
>
> Can someone suggest me any other libraries to do what I need?
>
> thanx alot
> Giulio
>
> --------------------------
> //// Get substring, chMagic is a character which
> // makes chSep act as a normal character.
> // Return TRUE on success.
> inline bool GetSubString(CS tring& strSub, LPCTSTR lpszFullString,
> int iFullStringLen, int iSubString, TCHAR chSep,
> TCHAR chMagic) {
> int iPos, iPosOrig, iStartPos, iEndPos, iNumMagics;
> TCHAR* pcSubString;
> if((lpszFullStr ing == NULL) ||
> (iFullStringLen == 0))
> return FALSE;
> // Find substring begin
> for(iStartPos = 0; (iStartPos < iFullStringLen) && (iSubString > 0);
> iStartPos++)
> {
> // May be separator ?
> if(*(lpszFullSt ring + iStartPos) == chSep)
> {
> if(((iStartPos > 0) &&
> (*(lpszFullStri ng + iStartPos - 1) != chMagic))
> || (iStartPos == 0))
> {
> // Sure it is a separator!
> iSubString--;
> }
> }
> }
>
> // Return empty string when nothing found
> if(iSubString > 0)
> {
> strSub.Empty();
> return FALSE;
> }
>
> // Find substring end
> iNumMagics = 0;
> for(iEndPos = iStartPos;
> iEndPos < iFullStringLen;
> iEndPos++)
> {
> // Count magics
> if(*(lpszFullSt ring + iEndPos) == chMagic)
> {
> iNumMagics++;
> }
> // May be separator ?
> if(*(lpszFullSt ring + iEndPos) == chSep)
> {
> if(((iEndPos > 0) && (*(lpszFullStri ng + iEndPos - 1)
> != chMagic)) || (iEndPos == 0))
> {
> // Sure it is the end
> break;
> }
> }
> }
>
> // Copy substring
> pcSubString = strSub.GetBuffe rSetLength(
> iEndPos - iStartPos - iNumMagics);
> iPosOrig = iStartPos;
> iEndPos -= iStartPos;
> if(pcSubString != NULL)
> {
> for(iPos = 0; iPos < iEndPos; iPos += sizeof(TCHAR))
> {
> if(*(lpszFullSt ring + iPosOrig) != chMagic)
> {
> *(pcSubString + iPos) = *(lpszFullStrin g + iPosOrig);
> }
> else
> {
> iPos -= sizeof(TCHAR);
> iEndPos -= sizeof(TCHAR);
> }
> iPosOrig += sizeof(TCHAR);
> }
> *(pcSubString + iPos) = 0;
> return TRUE;
> }
> return FALSE;
> };
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.525 / Virus Database: 322 - Release Date: 09/10/2003
>
>[/color]

[Bob Smith]

Re: parser needed



Giulio wrote:
[color=blue]
> I've got to take some data from a CSV file, so i need a good string parser[/color]

the best parser you will get is a lex / yacc generated parser/lexer
If you intend to do lots of work with th eparser I suggest you to look
at those two tools, they are excellent tools for generating parsers.
/B