Reading all section names from ini file using GetPrivateProfileSectionNames

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Hi,
Reading all section names from ini file.

I am getting the first section name alone when i use GetPrivateProfileSectionNames. How can i get the next section name ? Please help

C++

// reading each section from ini file

  LPWSTR pSecNames= new WCHAR[1024];

  int nSectionNum = 0;
  wstring strSecName;

  DWORD retVal = GetPrivateProfileSectionNames(pSecNames,1024,profileFilePath.c_str());

  if (retVal)
  {
    strSecName.assign(pSecNames,retVal);
  }
  delete pSecNames;

  string sectionName = ToString(strSecName.c_str(),CP_UTF8);

Posted 21-Mar-12 20:46pm

infant_coder

Updated 17-Sep-22 13:35pm

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6 solutions

Solution 3

Good soln, but minor mistake must be corrected as below in order to catch from the
first section name.

.... same as above

//can use vector<string> to place strings
vector<string> vsAllSections;

while (*pNextSection != 0x00)     
{         
    vsAllSections.push_back(pNextSection);
    pNextSection = pNextSection + strlen(pNextSection) + 1;         
}

Posted 4-Jun-20 2:56am

pickwickkim

Updated 4-Jun-20 3:02am

v2

Comments

Richard MacCutchan 4-Jun-20 9:15am

That solution is eight years old. I doubt that it has much relevance any more.

CHill60 4-Jun-20 9:46am

I had to do a lot of scrolling up and down to try to work out which solution you are referring to (I'm still not sure). If you are going to comment on a solution then either use the "Have a Question or Comment?" link next to it - which means the poster will be informed, or provide the full solution in your own post. At the very least mention which solution you are referring to!

Solution 4

char * lpszReturnBuffer;
lpszReturnBuffer = new char[MAX];
int iCnt = GetPrivateProfileSectionNames(lpszReturnBuffer,MAX,strFileName.c_str());  

for(int i=0;i<iCnt;i++)
{
  if(lpszReturnBuffer[i] == '\0') //find null char
  {
    lpszReturnBuffer[i] = '^';//and replace it to separator.. whatever you want...
  }
}
	
string strT = lpszReturnBuffer;//convert to string
string strR;
iPosEnd = strT.find('^');//find first separator
while(iPosEnd != string::npos)
{
  strR = strT.substr(iPosStart, iPosEnd-iPosStart);//sub string..
  cb->AddString(strR.c_str());//this is my combobox.. replace code whatever you want....
  iPosStart = iPosEnd+1;
  iPosEnd = strT.find('^',iPosStart);
}

Posted 23-Jun-20 22:44pm

Member 13258320

Comments

CHill60 24-Jun-20 0:08am

If you are going to resurrect old questions with a new solution please add some commentary (words) to explain why your solution is better than the one the questioner accepted as the solution 8 years ago.

Member 13258320 24-Jun-20 1:19am

Nothing better.... just the other way I understand....

Solution 5

vector<string> IniGetSections(string path)
{
	// converting string to widestring, since the GetPrivateProfile use widestrings
	wstring wpath = wstring(path.begin(), path.end());

	TCHAR csSections[1024]; // buffer for sections string return
	GetPrivateProfileSectionNames(csSections, sizeof(csSections) / sizeof(csSections[0]), wpath.c_str()); // calling the function from windows.h

	vector<string> Sections;             // vector to return
	TCHAR* pCurrentSection = csSections; // pointer to first wchar
	while (*pCurrentSection != 0x00)     // loop until double 0x00
	{
		wstring wstrval(pCurrentSection);                           // converting wchar[] to wstring
		Sections.push_back(string(wstrval.begin(), wstrval.end())); // converting wstring to string and adding section name to return vector
		pCurrentSection += wcslen(pCurrentSection) + 1;             // shifting pointer to the first symbol of the next section
	}

	return Sections; // result string vector
}

Posted 22-Jul-22 5:15am

Member 15714669

Updated 22-Jul-22 10:04am

v2

Comments

CHill60 22-Jul-22 12:50pm

A code dump without commentary is just that - a dump. It does not make for a solution

Member 15714669 22-Jul-22 16:12pm

Added a cooments
This is my first post here ))
I was looking for such solution, found it here and make a function with approach found, then shared here the result.
thank you for the feedback )
It works in MSVSC 2019

Solution 6

wchar_t buf[1024];
DWORD r = GetPrivateProfileSectionNamesW(buf, 1024, LR"(C:\Windows\win.ini)");
wchar_t *p = buf;
while (*p) p += wprintf(L"%s\n", p);

Posted 17-Sep-22 13:35pm

FreakMurderer

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Pablo Aliskevicius · Accepted Answer · 2012-03-21T20:55:00

From MSDN:

TXT

lpszReturnBuffer [out]
A pointer to a buffer that receives the section names associated with the named file. The buffer is filled with one or more null-terminated strings; the last string is followed by a second null character.

So, if your INI file is:

[Hello]
a=1
b=2
[World]
c=3
d=4

pSecNames will be "Hello\0World\0\0", and retVal will be 13.
You'll need some kind of loop to read them all:

C++

// This is pseudo-code, I didn't compile it.
std::list<std::wstring> l;
for (wchar_t * p = pSecNames; *p; ++p)
{
    std::wstring ws(p);
    l.push_back(ws);
    p += ws.size();
    ASSERT(0 == *p);
}

Hope this helps,

Pablo.

Resmi Anna · Accepted Answer · 2012-03-21T21:24:00

C++

LPTSTR lpszReturnBuffer;     
lpszReturnBuffer = new TCHAR[MAX];     
char* pNextSection = NULL;        
GetPrivateProfileSectionNames(lpszReturnBuffer,MAX,IniPath);     
pNextSection = lpszReturnBuffer;     
printf("%s\n", pNextSection);           
CString csAllSections;
while (*pNextSection != 0x00)     
{         
    pNextSection = pNextSection + strlen(pNextSection) + 1;         
    if(*pNextSection != 0x00)         
    {             
        csAllSections += pNextSection;
    }     
}

csAllSections will have all sections name. but not separted. You have to handle that logic

Reading all section names from ini file using GetPrivateProfileSectionNames

6 solutions

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