C / C++ / MFC

18-Jul-12 2:14

PLease show me how to search for a word in a text file using a listbox, String objects and Indexof, after i opened it in a richtextbox ,in visual C++, please help!!

David Crow18-Jul-12 2:18

David Crow

18-Jul-12 2:18

byank wrote:
PLease show me how to search for a word in a text file using a listbox...

What does a listbox have to do with searching a file?

Are you using MFC or Win32?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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byank19-Jul-12 11:00

19-Jul-12 11:00

it's just that i've seen here on codeproject the code for searching words in a text files using vb, i think. I need it in c++. thanks

David Crow20-Jul-12 2:24

David Crow

20-Jul-12 2:24

I understand that, but what does a listbox have to do with anything? It just seems to be "noise" in the overall problem.

Have you tried:

open the file
while not EOF
    read line from file
    if line contains text, exit loop
end
close file

The details deopend on whether you are using MFC, STL, Win32, or some combination thereof.

Shaunak De20-Jul-12 3:17

Shaunak De

20-Jul-12 3:17

If you are searching for a string in a text file do this:

C++

 CString oneLine;     //initialize a CString 
 bool flag = FALSE;   //flag for result
 CStdioFile  fS (_path_, CFile::modeRead ); //open the file
 int lineNumber = 0;   //hold the line number
 while( fS.readLine(oneLine))  //readLine returns false if EOF
  {
    if( oneLine.Find(L"String")!= -1 )  //Find returns -1 if no match
    { flag = TRUE; break; }
   lineNumber++;   //iterate lineNumber
  }
//lineNumber will hold the line in which the string was found. To get exact character place store what Find returns somewhere.

See also:
Find
CStdioFile

David Crow20-Jul-12 4:51

David Crow

20-Jul-12 4:51

Shaunak De wrote:
If you are searching for a string in a text file...

Which I'm not, but thanks anyway, though. Wink | ;)

byank20-Jul-12 7:28

20-Jul-12 7:28

tahnks for your help ...i need this code in visual c++ and i use visual c++ 2008/2010. could you help me with this? I place the word that i want to search in a textbox and after i click on a button(search) i want to see where the word is. The file is loaded in a richtextbox . thanks a lot

Software_Developer18-Jul-12 3:40

18-Jul-12 3:40

C++.NET [here] and [here] .

byank19-Jul-12 11:05

ParseExact - parsing a date with a given format in C++ / MFC

19-Jul-12 11:05

your help was appreciated but what i wana do is to write the word in a text box and after i click on a button(search) it will show me where the word is (in my richtextbox where the text file is loaded) all these in my windows form. any idea? thanks a lot

BadJerry18-Jul-12 0:50

Re: ParseExact - parsing a date with a given format in C++ / MFC

18-Jul-12 0:50

Hello,

I need a function that would do a parse exact on a CString - given a format - and return a date (or an exception!)

Eg
COleDateTime timParsed;
timParsed.ParseExact("2002 10 3","yyyy mm d");

I am aware of ParseDateTime... but I need something where you actually specify the expected format! And I knoe ParseExact is in .net but hey I am stuck in the nineties!

Any idea?

Thanks!
Jerry

Jochen Arndt18-Jul-12 2:27

Jochen Arndt

18-Jul-12 2:27

You may use time_from_string() from boost::posix_time, port the OpenSource code of the BSD strptime() function, or write a parser yourself (e.g. using sscanf()).

Re: ParseExact - parsing a date with a given format in C++ / MFC

Richard MacCutchan18-Jul-12 3:20

Richard MacCutchan

18-Jul-12 3:20

I have had some success in the past using strftime()[^].

One of these days I'm going to think of a really clever signature.

Re: ParseExact - parsing a date with a given format in C++ / MFC

BadJerry18-Jul-12 3:32

Re: ParseExact - parsing a date with a given format in C++ / MFC

18-Jul-12 3:32

Thanks Jochen And Richard,

Yes I used an OpenSource version of strptime() that I found here: http://plibc.sourceforge.net/doxygen/strptime_8c-source.html[^]- and I have transformef the char(s) into TCHAR, added _T, etc....

and I ave written this:

{
	...
	CString strFormatCpp = TranslateFormatDate(strFormatVB);

	tm timeDate;
	memset(&timeDate,0,sizeof(tm ));
	TCHAR * pRes = strptime (strMyDate, strFormatCpp, &timeDate);
				
	if ( pRes != NULL )
	{
		COleDateTime oleDate;
		oleDate.SetDateTime(1900 + timeDate.tm_year,timeDate.tm_mon+1,timeDate.tm_mday,timeDate.tm_hour,timeDate.tm_min,timeDate.tm_sec);

	}
}

CString TranslateFormatDate(const CString & strFormat) 
{
	CString strResult;
	int nChar = 0;
	while ( nChar < strFormat.GetLength() )
	{
		switch ( strFormat[nChar] )
		{
		case 'A':
			if ( MatchFormatKey(_T("AMPM"),_T("%p"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'a':
			if ( MatchFormatKey(_T("ampm"),_T("%p"),strFormat, nChar,strResult) ) // Lower does not exist in C++?
				continue;
		case 'y':
			if ( MatchFormatKey(_T("yyyy"),_T("%Y"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("yy"),_T("%y"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'M':
			if ( MatchFormatKey(_T("MMMM"),_T("%B"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("MMM"),_T("%b"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("MM"),_T("%m"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("M"),_T("%#m"),strFormat, nChar,strResult) ) 
				continue;
			break;
		case 'd':
			if ( MatchFormatKey(_T("dddd"),_T("%A"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("ddd"),_T("%a"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("dd"),_T("%d"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("d"),_T("%#d"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'h':
			if ( MatchFormatKey(_T("hh"),_T("%I"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("h"),_T("%#I"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'H':
			if ( MatchFormatKey(_T("HH"),_T("%H"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("H"),_T("%#H"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'm':
			if ( MatchFormatKey(_T("mm"),_T("%M"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("m"),_T("%#M"),strFormat, nChar,strResult) )
				continue;
			break;
		case 's':
			if ( MatchFormatKey(_T("ss"),_T("%S"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("s"),_T("%#S"),strFormat, nChar,strResult) )
				continue;
			break;
		}

		strResult+=strFormat[nChar];
		nChar++;
	}

	return strResult;
}

bool MatchFormatKey(const CString & strKey,const CString & strTransKey,const CString & strFormat, int & nPos,CString & strResult) 
{
	if ( strFormat.Mid(nPos, strKey.GetLength()) != strKey )
		return false;

	strResult+=strTransKey;
	nPos+=strKey.GetLength();

	return true;
}

Thanks every-one!
Jerry

modified 18-Jul-12 9:49am.

Software_Developer18-Jul-12 4:54

Re: ParseExact - parsing a date with a given format in C++ / MFC

18-Jul-12 4:54

Richard pointed out using strftime( ) . it is standard C.

#include <cstdio>
#include <ctime>
 

int main ()
{
  time_t rawtime;
  struct tm * timeinfo;
  char buffer [80];
  
  time ( &rawtime );
  timeinfo = localtime ( &rawtime );

  strftime (buffer,80,"%Y %m %d  ",timeinfo);
 
  puts (buffer);

  return 0;
}

BadJerry18-Jul-12 5:41

Re: ParseExact - parsing a date with a given format in C++ / MFC

18-Jul-12 5:41

Yes but I want to parse not to format!
Thanks!
Jerry

Richard MacCutchan18-Jul-12 7:39

Richard MacCutchan

18-Jul-12 7:39

My apologies, I got mixed up, and cannot for the life of me recall the function that does the parsing.

[edit]
It's strptime() which, unfortunately, is not available in Windows, so you will need to get a copy of an open source version from somewhere.
[/edit]

One of these days I'm going to think of a really clever signature.

Re: ParseExact - parsing a date with a given format in C++ / MFC

jschell20-Jul-12 7:28

jschell

20-Jul-12 7:28

Richard MacCutchan wrote:
It's strptime() which, unfortunately, is not available in Windows

Very odd. Far as I can tell strptime is not part of ANSI C. Which makes me wonder why.

Re: ParseExact - parsing a date with a given format in C++ / MFC

Richard MacCutchan20-Jul-12 9:21

Richard MacCutchan

20-Jul-12 9:21

It's POSIX according to the man page[^].

One of these days I'm going to think of a really clever signature.

Re: ParseExact - parsing a date with a given format in C++ / MFC

Software_Developer18-Jul-12 21:12

Re: ParseExact - parsing a date with a given format in C++ / MFC

18-Jul-12 21:12

My mistake. Didn't notice that CStrings only compile in MFC.

char buffer[256];
CString cs = buffer;

CString Management[^]

krmed18-Jul-12 10:04

krmed

18-Jul-12 10:04

You can still use the ParseDateTime, but you need to set the format first.

Here's what I've done...

First, get the current format using

C++

GetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csOriginalSDateFormat.GetBuffer(MAX_PATH + 1), MAX_PATH);
m_csOriginalSDateFormat.ReleaseBuffer();

(m_csOriginalSDateFormat is a CString)

Next have your own CString with the desired format:

m_csNewSDateFormat = _T("M/d/yyyy");

Now, set the desired format, parse the date/time, and restore the original format:

SetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csNewSDateFormat);
oleStartTime.ParseDateTime(csDateTime);
SetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csOriginalSDateFormat);

Hope this helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Re: ParseExact - parsing a date with a given format in C++ / MFC

BadJerry18-Jul-12 22:45

Re: COleDateTime::Format("%A, %B %d, %Y")

18-Jul-12 22:45

That's clever!

Software_Developer19-Jul-12 6:16

Re: COleDateTime::Format("%A, %B %d, %Y")

19-Jul-12 6:16

*FACEPALM* COleDateTime::Format MSDN[^]

COleDateTime t(1999, 3, 19, 22, 15, 0);

CString str = t.Format(_T("%A, %B %d, %Y"));

BadJerry19-Jul-12 7:08