I'll probably get corrected by someone more knowledgeable about this, but older versions of Windows (i.e. based on the Win95 code based, using older FAT filesystems as opposed to NTFS), including WinME, do not report file modification times very accurately, and the Ant code allows for a 2 seconds leeway on these older platforms.
When copying from WinME to WinNT, the modification time leeway takes effect or WinNT reports the modification time correctly. When going the other way, either WinNT does not use the 2 seconds leeway, or the WinME file-system reports incorrect/imprecise modification times. I'm not sure there's much that could be done to fix this, short of writing the actual modification times separately to a file in each directory, and use that file if it exists. Is your WinNT machine using a NTFS file-system? Are your Win98/ME machines using FAT? I hope this sheds a little light on the issue. --DD -----Original Message----- From: Terry Steichen [mailto:terry@;net-frame.com] Sent: Saturday, October 26, 2002 5:42 PM To: Ant Users List Subject: Copying Question vis-a-vis Windows NT When I use a standard <copy> task between a local Windows98 directory and a network directory hosted on a WindowsME machine, it works exactly as it should. But, when I use precisely the same script on a WindowsNT machine targeting the Windows ME (or Windows 98) machines, Ant appears to copy indiscriminantly, without regard to the prior existence of identical files on the target machines. This is the simple Ant file I've used for testing. On the NT, it will repeat the copying as many times as you run it, but on the Win98, it will actually copy the files only the first time (as it should). <project name="testing" default="backup" > <target name="backup" > <copy todir="e:/copy_test" preservelastmodified="yes"> <fileset dir="c:/copy_test"> <include name="*.*"/> </fileset> </copy> <copy todir="f:/copy_test" preservelastmodified="yes"> <fileset dir="c:/copy_test"> <include name="*.*"/> </fileset> </copy> </target> </project> Is there any record of Windows NT behaving differently from other Ant hosts? (I've searched through the mailing list without luck on this topic, though I vaguely recall reading something relating to it some time ago.) Thanks in advance, Terry -- To unsubscribe, e-mail: <mailto:ant-user-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:ant-user-help@;jakarta.apache.org>
