On 18/12/2020 08:22, Wang, Shenhao wrote:
> Hi, hackers
>
> pgbench use -f filename[@weight] to receive a sql script file with a weight,
> but if I create a file contains char'@', like a@2.sql, specify this file without weigth,
> pgbench will failed with error:
> pgbench: fatal: invalid weight specification: @2.sql
>
> This action may be unfriendly, because the char '@' is a valid character on Linux
> and Windows.
>
> I have created a patch to modify this action. The patch is attached.
This patch changes it to first check if the file "a@2.sql" exists, and
if it doesn't, only then it tries to interpret it as a weight, as
filename "a" and weight "2.sql". That stilll doesn't fix the underlying
ambiguity, though. If you have a file called "script" and "script@1",
this makes it impossible to specify "script" with weight 1, because "-f
script@1" will now always open the file "script@1".
I think we should just leave this as it is. The user can simply rename
the file.
Or maybe one change would be worthwhile here: First check if the part
after the @ contains only digits. If doesn't, then assume it's part of
the filename rather than a weight. That would fix this for cases like
"foo@1.sql", although not for "foo@1".
- Heikki