W dniu 29.12.2020 o 18:54, Paul Gilmartin pisze:
On Tue, 29 Dec 2020 18:12:06 +0100, R.S. wrote:
1. Yes, maybe I described it incorretly.
Regarding your question - yes I need something like
convert ifile ofile [-tablefile]
Just byte to byte translation. No CR/LF issues, no record boundaries,
just byte to byte. The file can be large (may not fit in memory).
I'm surprised. Is the input file a text file? How are records delimited?
(Is it organized in records?) If it's binary data I wouldn't expect
conversion to be useful.
Perhaps the answer to all such questions is RECFM=FB.
Does it originate on z? How does it get to Windows?
FTP BINARY?
Are you writing a tool for non-programmers to use?
The input file contain some text and some other fields. CR/LF,
RECFM=FB/VB and other "end of line" issues are not relevant.
The idea is to convert it to readable format, analyze content and maybe
modify very few words or characters. Modified file should be converted
back to original format. Obviously conversion forward and backward
should give file equal to the source file.
Modification can be understood like replacement "Radek" to "Gil.." or
"AAAA" to "BBBB". No change of length, just byte to byte replacement.
ISPF browse/edit with proper codepage is not an option due to some
reasons I don't want to describe, technically irrelevant.
FTP translation is also not an option. And I would like to avoid Rube
Goldberg process like ftp put with no translation and then get with
custom translation. However this method can be run in batch and it is
feasible even for large files.
No, I'm not writing any tool - I want to avoid it and simply save
people's time spent on the process.
Maybe I'm naive, but I believed such tools simply exist and are
available for download - like many, many other small and useful utilities.
Regards
--
Radoslaw Skorupka
Lodz, Poland
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