Re: custom function for converting human readable sizes to bytes

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: "Shulgin, Oleksandr" <oleksandr(dot)shulgin(at)zalando(dot)de>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Guillaume Lelarge <guillaume(at)lelarge(dot)info>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: custom function for converting human readable sizes to bytes
Date: 2016-01-04 17:03:02
Message-ID: CAFj8pRA__Oz8qwoKqseQTcqea4DWe9_hW_vUNZo9J_c7sL3JBg@mail.gmail.com
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2016-01-04 17:48 GMT+01:00 Shulgin, Oleksandr <oleksandr(dot)shulgin(at)zalando(dot)de>
:

> On Mon, Jan 4, 2016 at 4:51 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
>> On Mon, Jan 4, 2016 at 10:17 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
>> wrote:
>> > [ new patch ]
>>
>> + case '-':
>> + ereport(ERROR,
>> + (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
>> + errmsg("size cannot be negative")));
>>
>> Why not? I bet if you copy any - sign to the buffer, this will Just Work.
>>
>
> I'm also inclined on dropping that explicit check for empty string below
> and let numeric_in() error out on that. Does this look OK, or can it
> confuse someone:
>
> postgres=# select pg_size_bytes('');
> ERROR: invalid input syntax for type numeric: ""
>
> ?
>
> + if ( conv->base_unit == GUC_UNIT_KB &&
>>
>
> Between "(" and "conv->..." I believe.
>

both fixed

Regards

Pavel

>
> ---
> Alex
>
>

Attachment Content-Type Size
pg-size-bytes-08.patch text/x-patch 10.9 KB

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