file issues in open C

[himsymbian]

HI FRIENDS,

I have some files in a folder which I am opening it at runtime in my program.
When i am opening the files some of the files do not open.
Is there any issue with the files in open-c I am using fstream class.

Thanks,
himanshu k.
Symbian Application Developer.

[paipeng]

what kind of error by opening the file?

[himsymbian]

Hi friends,

------------------------------
This is the following code:
------------------------------
1) FILES CREATED.

2)
for (i = 0; i < wordsToRead; i++)
{
dicFile.read(&b_char,1); // IO OPERATION

for(j = 0; j < b_char; j++)
{
dicFile.read((char*)&b_short, 2); // IO OPERATION
}

}

3) AFTER THIS THE FILES ARE NOT CREATED.

Thanks,
himanshu k.
symbian application developer.

[paipeng]

do you mean, files can't be opened or can't be created?!


some kind of files or all files?

[himsymbian]

hi friends,

1)
First of all the files cannot be created.

2)
Secondly what I tried is, I myself put the files(zero byte) into that folder, so now the code had to just open the files but that also is ot happening IT IS SETTING THE [fail bit] OF THE ios class.

Thanks,
himanshu k.
Symbian Application Developer.

[paipeng]

Have you taken a look at the example in OpenC++?

[himsymbian]

hi,

I have executed that example also.

See when i am reading only 1 record from the file, the further files are created,

but when i do 30000 read operations on the file, the furthur files are not created.

Is this an isue with open-C??

Thanks,
himanshu k
Symbian Application Developer.

[himsymbian]

hi friends,

I am having a problem with IO operations in open-c.

This is the path:
-----------------
C:\Symbian\9.1\S60_3rd_MR\Epoc32\winscw\c\system\Apps\test\

I am having 4 files say f1.txt (size 400 KB)
f2.txt (1 kb)
f3.txt (1 kb)
f4.txt (1 kb)

These four files reside in the following above given path.
The files in the program are opened in binary mode.

a) In the first case, I am reading the entire file (f1.txt)
in a loop (it contains say 10000 records) i.e there are 10000 read operations
(*) After that if i try to open files [f2.txt,f2.txt and f4.txt]
it doesnt get opened even if they exists.

b) In the second case, I am not reading te entire file but just
1000 records i.e there are just 1000 read operations.

In this case all the files i.e [f2.txt,f3.txt,f4.txt] are created.

why is it that after 10000 read operations code doesnt work properly
and after 1000 operations it works properly.

Is there any limitation on the number of read operations or do i need any privilage for such extensive file operation.

In both the cases the program doesnt crash it exits normally.

I am in a reall fix. please do help me out.
Eagerly waiting for your reply.

Thanks,
himanshu k.
Symbian Application Developer.

[paipeng]

try to use only one loop-function to read data from a file

or (i = 0; i < wordsToRead; i++)
{
dicFile.read(&b_char,1); // IO OPERATION

for(j = 0; j < b_char; j++)
{
dicFile.read((char*)&b_short, 2); // IO OPERATION
}

}

[himsymbian]

hi paipeng,

Can you please explain in detail your solution!!

Thanks,
himanshu k
symbian application developer

[paipeng]

something like normal read operation:


"
while( not to EOF)
{
file.read(buffer, length);
}
"

[himsymbian]

hi paipeng,

Thanks for your reply.
I tried that but it didn't work.

thanks again
himanshu k
Symbian Application Developer.