I need file timestamp and size, so I need a full FileInfo.
--
rob
drrob...@fastmail.com
On Sat, Mar 13, 2021, at 6:11 PM, Axel Wagner wrote:
>
>
> On Sat, Mar 13, 2021 at 11:52 PM rob <drrob...@fastmail.com> wrote:
>> Sorry, I did not intend to open a new thread.
>> I don't know how to answer you about the actual contents of the directory of
>> interest. It's my c:\users\rob\Documents directory.
>> There are a lot of files there. I'm writing my own version of the dir
>> command, one that will sort and behave exactly as I want. I decided to
>> experiment w/ the new library definitions; and discovered that DirEntry is
>> not a replacement for FileInfo. I thought that was the intent of the Go
>> team, but I guess did not understand.
> It is, for most use-cases that want to list the contents of a file. It works
> around the fact that on many platforms, you already get *some* info in the
> readdir call but some info only by following it up with a Stat - returning a
> FileInfo requires you to do the stat, but most applications only need the
> things returned already by readdir itself and don't need to follow it up with
> a separate stat call. The DirEntry design splits up the info returned by
> readdir (namely the file names and the file mode) from the info returned by
> stat (the DirEntry.Info method).
>
> I still don't understand why you think that ReadDir/DirEntry did not work for
> you - as I said, from your code the issue seems to simply be that you call
> ReadDir on regular files, instead of directories. OTOH, as long as you've
> find a solution that works for you, I guess that's fine.
>> In my code I went back to using Lstat, and instead of ioutil.ReadDir, I
>> now use
>> f, err := os.Open(directoryname)
>> if err != nil { blah blah blah}
>> files, err := f.Readdir(0)
>> if err != nil { blah blah blah}
>> And this works for me.
>> --rob solomon
>>
>>
>> On 3/11/21 4:00 PM, Axel Wagner wrote:
>>> I don't understand why you opened a new thread. But FWIW, it would still be
>>> useful to know
>>> a) what the actual contents of the directory are you are globbing
>>> b) which of those file names is then giving you an error
>>> c) and which specific call is returning that error.
>>>
>>> Your message "Unexpected error from os.DirEntry" is confusing, as the only
>>> method of os.DirEntry that could return an error, hardcodes that error to
>>> be nil, as far as I can tell:
>>> https://github.com/golang/go/blob/b3896fc331c36a539f825f1f656cef3f9cdffd3f/src/os/dir_windows.go#L68
>>>
>>> In the other thread, I also tried to provide a plausible explanation from
>>> the limited info - it seems strange that you are globbing for *.txt files
>>> and then call ReadDir with those filenames. Have you read that message?
>>>
>>> On Thu, Mar 11, 2021 at 9:31 PM rob <drrob...@fastmail.com> wrote:
>>>> As the subject line says, this is on windows.
>>>> I'm getting the file not found error for every file returned by the glob
>>>> function.
>>>>
>>>> I guess I misunderstood the purpose of ReadDir, and I really need to call
>>>> os.Lstat to retrieve the directory information for each individual file
>>>> that matches the glob pattern on widows 10.
>>>>
>>>> I'll check, but I'm able to call os.ReadDir on an individual file on
>>>> Ubuntu 20.04. I'll confirm when I get home that I'm getting a FileInfo
>>>> structure returned from this routine
>>>>
>>>>
>>>>
>>>> --
>>>> rob
>>>> drrob...@fastmail.com
>>>>
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