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hydrix
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 Posted - 11/17/2008 : 08:58:58 AM
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hi,
the origin example for creating and writing an ascii file
int file_Write_ex1()
{
file ff;
bool bOK = ff.Open("C:\\test.txt", file::modeCreate | file::modeReadWrite);
if(!bOK)
{
out_str("Failed to open file C:\test.txt");
return 0;
}
int ia = 10;
ff.Write(&ia, sizeof(ia)); //write 4 to file.
int ib[4] = {1, 2, 3, 4};
ff.Write(ib, sizeof(ib)); //write 1, 2, 3, 4 to file following previous 4.
//write double
double da = 123.345;
ff.Write(&da, sizeof(da));
//write structure
WIN32_FIND_DATAA sa;
memset(&sa, 0, sizeof(WIN32_FIND_DATAA));
sa.dwFileAttributes = 20000;
sa.ftCreationTime.dwLowDateTime = 10;
sa.ftCreationTime.dwHighDateTime = 50;
sa.ftLastAccessTime.dwLowDateTime = 100000;
sa.ftLastAccessTime.dwHighDateTime = 500000;
sa.ftLastWriteTime.dwLowDateTime = 1000;
sa.ftLastWriteTime.dwHighDateTime = 5000;
sa.nFileSizeHigh = 9000000;
sa.nFileSizeLow = 1;
sa.dwReserved0 = 600;
sa.dwReserved1 = 98745;
lstrcpy(sa.cFileName, "C:\\Origin70\\OriginC\\origin.h");
lstrcpy(sa.cAlternateFileName,"originc.h");
ff.Write(&sa, sizeof(sa));
//write char array
char ca[20] = "This is a string.";
ff.Write(ca, sizeof(ca));
//write vector
vector<int> ik = {1, 2, 3, 4, 5};
int size = sizeof(int) * ik.GetSize();
ff.Write(ik, size);
return 1;
}
compiles well. however in the resulting text file 'test.txt' i get the following data:
Gz^@ N
2 @T X C:\Origin70\OriginC\origin.h originc.h This is a string.
it seems like the numerical output is not corrrect. can anyone help me with that?
furthermore: how can i realize a line break in the resulting text file?
thanks!
hydrix
windows xp
origin 8.0 |
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Iris_Bai
China
Posts |
Posted - 11/25/2008 : 11:01:35 PM
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Hi,
Do you want see the value of int, double in output txt file? file::Write write as binary, so cannot see them, need to convert to string and write, like:
void write_string_ex()
{
int ia = 10;
string str;
str.Format("%d", ia);
stdioFile ff("c:\\stdioFile_test1.txt",file::modeCreate | file::modeReadWrite);
ff.WriteString(str);
}
About add line break, you can use stdioFile::WriteString, this method write a line to a file, end of line character is auto appended. if use file::Write, you need add "\r\n" at the end of each string.
void write_string_with_line_break_ex()
{
//use stdioFile class, write string with line break
string strLine1 = "line 1:";
string strLine3 = "line 3:";
stdioFile ff("c:\\stdioFile_test2.txt",file::modeCreate | file::modeReadWrite);
ff.WriteString(strLine1);
ff.WriteString("line 2:");
ff.WriteString(strLine3);
//use file class, write string with line break
file ff2("c:\\file_test2.txt",file::modeCreate | file::modeReadWrite);
strLine1 += "\r\n";
strLine3 += "\r\n";
string strLine2 = "line 2:\r\n";
ff2.Write(&strLine1, sizeof(char)*strLine1.GetLength());
ff2.Write(&strLine2, sizeof(char)*strLine2.GetLength());
ff2.Write(&strLine3, sizeof(char)*strLine3.GetLength());
}
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Edited by - Iris_Bai on 11/25/2008 11:02:27 PM |
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write ascii file