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Views: 5744 | Replies: 4
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Join Date: Jul 2006
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Newbie Poster
I am reading a CSV file and parsing its content into tokens. Now i want to know how to check for End of File. I am giving my code to be more clear.
Help me !
ifstream file(filename); if (file) { char ch ; do { file.getline(line, SIZE); tmp =static_cast<string>(line); vector <string> array; string token; istringstream iss(tmp); int i=1; while ( getline(iss, token, ',') ) { array.push_back(token); v_List.SetItemText(nItem, i, token.c_str()); i++; } // }//cin.get(); }while(ch=EOF); // Here i have to check for EOF but this one enters an infinite loop.
Help me !
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Join Date: Jun 2005
Location: Tokyo, Japan
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try
ifstream file(filename);
if (file)
{
while ( file.getline(line,SIZE) )
{
tmp =static_cast<string>(line);
vector <string> array;
string token;
istringstream iss(tmp);
int i=1;
while ( getline(iss, token, ',') )
{
array.push_back(token);
v_List.SetItemText(nItem, i, token.c_str());
i++;
}
}
} バルサミコ酢やっぱいらへんで
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Join Date: Aug 2005
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Echo that and...
-don't use EOF or any of its derivatives.
-don't use EOF or any of its derivatives.
Member of: F-ugly code club
Join today don't delay!
Join today don't delay!
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Join Date: Aug 2005
Location: near St Louis, Missouri, USA
Posts: 10,643
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here is a pure c++ version that replaces the C-style char array with std::string and removes the tmp variable altogether.
From the looks of this function it must be just a code snippet of a larger more complex function, is that right? If it isn't, then you can remove vector array because it serves no purpose.
From the looks of this function it must be just a code snippet of a larger more complex function, is that right? If it isn't, then you can remove vector array because it serves no purpose.
ifstream file(filename);
if (file)
{
std::string line;
while ( getline(file,line) )
{
vector <string> array;
istringstream iss(line);
int i=1;
while ( getline(iss, token, ',') )
{
array.push_back(token);
v_List.SetItemText(nItem, i, token.c_str());
i++;
}
} •
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Join Date: Jun 2005
Location: Tokyo, Japan
Posts: 1,480
Reputation:
Rep Power: 8
Solved Threads: 98
You probably wouldn't need the temporary variable if you use something like this.
edit:
Dragon has posted a more or less equal version before me. I considered deleting this but decided otherwise because of a subtle difference. That difference is that the stringstream variable is created before the
iifstream file(filename);
string line;
if (file)
{
string token;
stringstream iss;
int i;
while ( getline(file, line) )
{
iss << line;
i = 1;
while ( getline(iss, token, ',') )
{
cout << token << endl;
i++;
}
iss.clear();
}
}edit:
Dragon has posted a more or less equal version before me. I considered deleting this but decided otherwise because of a subtle difference. That difference is that the stringstream variable is created before the
while ( getline(file, line) ) block. I only wanted to refraining from calling the constructor over and over again. But the additional overhead (if any )due to the call of iss << line;and iss.clear(); should be inspected. Last edited by WolfPack : Jul 26th, 2006 at 10:14 am.
バルサミコ酢やっぱいらへんで
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