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Hi,
I solve my issue posted yesterday, but today has another problem related to it.
When I migrate another small project from C++ to VS2008, I double check all the function delcaration to make sure fstream object is passed by reference or pointer, but when I compile program, I still got two error messages, they are same and the only two errors.
C2248: 'std::basic_ios<_Elem,_Traits>::basic_ios' : cannot access private member declared in class 'std::basic_ios<_Elem,_Traits>'
In this case how should I find where the error come from?
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I found some functions that pass std::istream or std::istrstream by value, not by reference, is that the reason to cause the problem?
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Yes, they also need to be passed by reference, now can be compile now.
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I would suppose that passing the fstream by value in 6.0 was wrong too. It might have worked but only by luck.
A fstream is a representation of a computer resource. Passing by value implicitly duplicates the representation without duplicating the actual resource. Thus it represents a broken design/implementation.
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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!!
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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
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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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
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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 fileThe details deopend on whether you are using MFC, STL, Win32, or some combination thereof.
"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
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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If you are searching for a string in a text file do this:
CString oneLine; bool flag = FALSE; CStdioFile fS (_path_, CFile::modeRead ); int lineNumber = 0; while( fS.readLine(oneLine)) {
if( oneLine.Find(L"String")!= -1 ) { flag = TRUE; break; }
lineNumber++; }
See also:
Find
CStdioFile
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Shaunak De wrote: If you are searching for a string in a text file...
Which I'm not, but thanks anyway, though. 
"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
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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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
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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
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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
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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()).
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I have had some success in the past using strftime()[^].
One of these days I'm going to think of a really clever signature.
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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) )
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.
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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;
}
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Yes but I want to parse not to format!
Thanks!
Jerry
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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.
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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.
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It's POSIX according to the man page[^].
One of these days I'm going to think of a really clever signature.
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My mistake. Didn't notice that CStrings only compile in MFC.
char buffer[256];
CString cs = buffer;
CString Management[^]
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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
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
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