On Friday, 4 May 2018 at 14:02:24 UTC, Jonathan M Davis wrote:
On Friday, May 04, 2018 13:17:36 Vino via Digitalmars-d-learn
wrote:
On Friday, 4 May 2018 at 12:38:07 UTC, Adam D. Ruppe wrote:
> What are you actually trying to do with it? These functions
> are probably the wholly wrong approach.
Hi Adam,
The existing program in Windows do few task's eg: Delete
files
older that certain days, and now we are trying to port to
Linux,
and above was just a example, hence asked the right approach
for
porting.
Linux does not keep track of the creation time of a file. So,
it will not work to have a program on Linux ask a file how long
it's been since the file was created. If you want that
information, you'll have to store it elsewhere somehow (and
that generally only works if you created the file in the first
place).
The modification time of the file is the time that the file was
last changed (which would be the creation time if it were only
ever written to once, but in the general case, it has no
relation to the creation time at all). So, you could use
std.file.timeLastModified to find out if a file has been
changed within the last x number of days, but there is no way
to find out the creation time of a file by asking the
filesystem.
- Jonathan M Davis
Hi Jonathan,
Thank you, i got your point from the other forum topic which
was raised by me earlier, hence decided to use modification time,
the request is on how and the best approach to port the code from
windows to Linux eg program below
Example Code:
import std.stdio: writeln;
import std.container.array;
import std.file: dirEntries,isFile, SpanMode;
import std.algorithm: filter, map;
import std.typecons: Tuple, tuple;
import std.datetime.systime: SysTime;
version (Windows) { alias sTimeStamp = timeCreated; } else
version (linux) { alias sTimeStamp = timeLastAccessed; }
auto clogClean (string LogDir ) {
Array!(Tuple!(string, SysTime)) dFiles;
dFiles.insert(dirEntries(LogDir, SpanMode.shallow).filter!(a =>
a.isFile).map!(a => tuple(a.name, a.sTimeStamp)));
return dFiles;
}
void main () {
string LogDir;
LogDir = "//DScript/Test"; // Error: undefined identifier
timeLastAccessed on Linux
LogDir = "C:\\DScript\\Others"; // Error: undefined identifier
timeCreated on Windows.
writeln(clogClean(LogDir));
}
From,
Vino.B