is there any function to check if a particular file exists or not ?

Pl guide.

Vishal

Hi,

Yes, there is function - file.stat()

Syntax:
function long file.stat (string file_name, ref long file_size [, ref long ctime] [, ref long mtime] [, ref long atime])

Description

This returns information about a specified file. It is a short version of the stat.info() function.


Arguments
string file_name The name of the file for which information is required.

ref long file_size The file size in bytes.

[ref long ctime] The time when the file status was last changed, as a number of seconds since 00:00:00 GMT, January 1, 1970.

[ref long mtime] The time when the file was last modified, as a number of seconds since 00:00:00 GMT, January 1, 1970.

[ref long atime] The time when the file data was last accessed, as a number of seconds since 00:00:00 GMT, January 1, 1970.


Return values
0 File exists.
<>0 Operating system error code.


You can also use seq.open() and check the return code. If its >= 1 then file exists, else it doesn't exists/have some problem opening it up.

I also use this a lot - before uploading the file to our UNIX servers for processing in 4c4. :)


| Open PC file to make sure it exists.
inputfile = seq.open.local(input.file,"r",0)
if(inputfile<0) then
file_err(inputfile)
return(true)
endif
seq.close.local(inputfile)
rc = client2server(input.file,temp.file,0)