Re: [PATCH v2] scripts: socfpga_import_preloader: Translate DOS line endings

[Sascha Hauer <sha@pengutronix.de>]

On Fri, Jun 16, 2023 at 01:31:49PM +0200, Sascha Hauer wrote:
> On Fri, Jun 16, 2023 at 12:36:11PM +0200, Ahmad Fatoum wrote:
> > Hi,
> > 
> > On 16.06.23 12:30, Sascha Hauer wrote:
> > > On Fri, Jun 16, 2023 at 10:19:38AM +0100, Ian Abbott wrote:
> > >> On 16/06/2023 07:41, Sascha Hauer wrote:
> > >>> Hi Ian,
> > >>>
> > >>> On Thu, Jun 15, 2023 at 04:57:38PM +0100, Ian Abbott wrote:
> > >>>> If the handoff files were generated on a Windows system, they will have
> > >>>> DOS line endings.  The `indent` program (with the options used by the
> > >>>> script) does a lousy job tidying up those files, leaving ASCII CR
> > >>>> characters embedded in the lines.  This is particularly bad for array
> > >>>> initializers that have one value per line, because they all end up on a
> > >>>> single line with embedded ASCII CR characters between each value.
> > >>>>
> > >>>> Add an initial `sed` command to `copy_source()` to match and remove an
> > >>>> ASCII CR character from the end of each input line.
> > >>>>
> > >>>> Also output a message before running `unifdef` and fix the spelling of
> > >>>> "paths" in one of the other messages.
> > >>>>
> > >>>> Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
> > >>>> ---
> > >>>> v2: Corrected tabs in echoed output.
> > >>>> ---
> > >>>>   scripts/socfpga_import_preloader | 6 +++++-
> > >>>>   1 file changed, 5 insertions(+), 1 deletion(-)
> > >>>>
> > >>>> diff --git a/scripts/socfpga_import_preloader b/scripts/socfpga_import_preloader
> > >>>> index bd54e1b913..26a8556b1a 100755
> > >>>> --- a/scripts/socfpga_import_preloader
> > >>>> +++ b/scripts/socfpga_import_preloader
> > >>>> @@ -79,6 +79,10 @@ copy_source() {
> > >>>>   	cp $src $tgt
> > >>>> +	echo "	Translating DOS line endings..."
> > >>>> +	sed -i "s/`echo -e '\r'`$//" $tgt
> > >>>
> > >>> Why `echo -e '\r'` here? A plain \r should work as well.
> > >>
> > >> A plain \r doesn't work, but \\\r works. I prefer '\r'.
> > > 
> > > Strange, would be interesting to know where the difference is.
> > > Here both of these commands have behave the same:
> > > 
> > > echo hallo | unix2dos | sed "s/`echo -e '\r'`$//" | hexdump -C
> > > echo hallo | unix2dos | sed "s/\r$//" | hexdump -C
> > 
> > Speaking of unix2dos, socfpga_get_sequencer and socfpga_xml_to_config.sh
> > already use dos2unix. Why can't we do likewise here and avoid any
> > dash/bash/sed/gsed incompatibilities that might be there?
> 
> We could, but you sent a patch that uses sed instead ;)
> 
> I'm fine with using dos2unix. I thought you were doing so to avoid
> adding another dependency to the barebox build system. In the end
> this script is not even part of the build system, but only a helper
> script which is called manually, so this shouldn't be a problem.
> Also unix2dos/dos2unix is likely found in all Linux distributions. Just
> go for it.

Erm, sorry, I thought I am answering Ian. I didn't realize Ahmad wrote
this mail.

Sascha

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