[Rd] Fwd: file mode lost in file.copy()?

From: Yihui Xie <xie_at_yihui.name>
Date: Sun, 06 Mar 2011 15:08:47 -0600

Hi,

I was suggested that this question should be reported to r-devel. Could you please make file.copy() preserve the file mode information? I see from the source code that file.copy() is basically file.append():

    if (any(okay)) {

        okay[okay] <- file.create(to[okay])
        if (any(okay))
            okay[okay] <- file.append(to[okay], from[okay])
    }

Maybe something like this should be added to file.copy():

Sys.chmod(to[okay], file.info(from[okay])$mode)

Thanks!

Regards,
Yihui

--
Yihui Xie <xieyihui_at_gmail.com>
Phone: 515-294-2465 Web: http://yihui.name
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA




---------- Forwarded message ----------
From: Yihui Xie <xie_at_yihui.name>
Date: Sat, Mar 5, 2011 at 5:31 PM
Subject: file mode lost in file.copy()?
To: R Help <r-help_at_r-project.org>


Hi,

Recently I noticed file.copy() would discard the file mode
information. Is this the expected behaviour or a bug for file.copy()?


> file.create('testfile')
[1] TRUE
> file.info('testfile')
        size isdir mode               mtime               ctime testfile    0 FALSE  644 2011-03-05 17:06:39 2011-03-05 17:06:39                       atime  uid  gid uname grname testfile 2011-03-05 17:06:40 1000 1000 yihui  yihui
> Sys.chmod('testfile', '0755')

> file.info('testfile')
        size isdir mode               mtime               ctime testfile    0 FALSE  755 2011-03-05 17:06:39 2011-03-05 17:06:59                       atime  uid  gid uname grname testfile 2011-03-05 17:07:00 1000 1000 yihui  yihui
> file.copy('testfile', 'testfile2')
[1] TRUE
> file.info('testfile2')
         size isdir mode               mtime               ctime testfile2    0 FALSE  644 2011-03-05 17:07:20 2011-03-05 17:07:20                        atime  uid  gid uname grname testfile2 2011-03-05 17:07:21 1000 1000 yihui  yihui
> sessionInfo()
R version 2.12.2 (2011-02-25) Platform: x86_64-unknown-linux-gnu (64-bit) locale:  [1] LC_CTYPE=en_US.utf8       LC_NUMERIC=C  [3] LC_TIME=en_US.utf8        LC_COLLATE=en_US.utf8  [5] LC_MONETARY=C             LC_MESSAGES=en_US.utf8  [7] LC_PAPER=en_US.utf8       LC_NAME=C  [9] LC_ADDRESS=C              LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base Regards, Yihui -- Yihui Xie <xieyihui_at_gmail.com> Phone: 515-294-2465 Web: http://yihui.name Department of Statistics, Iowa State University 2215 Snedecor Hall, Ames, IA ______________________________________________ R-devel_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Received on Sun 06 Mar 2011 - 21:17:37 GMT

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