fsIOGetFileSize

The fsIOGetFileSize function is used to get the size of an opened file.

 

Syntax

unsigned long long fsIOGetFileSize(
    FsIOFile file
);

 

Members

Parameters	Description
file	This is the ID of a file, as returned by one of the open functions.

Return Values

The size of the file, in bytes. This may be 0 if there is an error, ie: the file is not opened, or is too too big.

 

Remarks

It is important to be aware that while the size is returned is a 64bits integer, the WASM API can only read up too 2^32 bytes. However even that upper limit is not realistic and will probably not enter into the WASM memory modules, so for optimal both performance and memory usage, please limit the size of the read from files.