Mail Archives: cygwin/2009/10/26/14:59:18
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Date: | Mon, 26 Oct 2009 15:59:04 -0400
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Message-ID: | <bb237ab80910261259t660c6354wb286a17bb436bdd5@mail.gmail.com>
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Subject: | Re: How to increase the memory available to diff in cygwin 1.7?
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From: | Kenneth Chiu <kchiu AT cs DOT binghamton DOT edu>
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To: | Stephan Mueller <Stephan DOT Mueller AT microsoft DOT com>
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Cc: | "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
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X-Spam-Report: | Spam detection software, running on the system "necro.cs.binghamton.edu", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Well, it really depends on one's familiarity. I can run find on both directory roots, to get a list of all files. I want breadth-first, but I think find can do that. The output needs to be sorted for each directory, since I also need to find files in one that are not in the other. I am not sure that I can just run sort to do that, due to the special ordering that I need to give the / character, relative to other non-alphanum characters. [...] Content analysis details: (-1.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.4 ALL_TRUSTED Passed through trusted hosts only via SMTP
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Well, it really depends on one's familiarity. I can run
find on both directory roots, to get a list of all files. I
want breadth-first, but I think find can do that.
The output needs to be sorted for each directory, since I
also need to find files in one that are not in the other. I
am not sure that I can just run sort to do that, due to the
special ordering that I need to give the / character,
relative to other non-alphanum characters.
Now I need to read each list, in parallel, line-by-line. If
the file from list 1 is greater than the file in list 2,
then the file is missing in dir 2, and vice versa.
If a file is a directory in one, but not in the other, then
I need to advance one list to skip that dir. For example,
if foo is a directory in a, but not in b, then the breadth
first output is:
a/f1
a/f2
a/foo
a/g
a/h_dir_in_both
a/j
a/foo/f1
a/foo/f2
a/h_dir_in_both/g1
b/f1
b/f2
b/foo
b/g
b/h_dir_in_both
b/j
b/h_dir_in_both/g1
At this point, it starts to seem easier to do in C++, though
I wouldn't be terribly surprised if there was some easier
way to do it via shell scripting that I have missed.
On Mon, Oct 26, 2009 at 3:35 PM, Stephan Mueller
<Stephan DOT Mueller AT microsoft DOT com> wrote:
> Kenneth Chiu writes:
> " cmp doesn't recurse, though, at least as far as I can tell.
> " In theory, I could use find, then cmp, plus some scripting,
> " but seems simpler to just write a small C program
> " to do it.
>
> Really? =A0Your definition of 'simpler' may differ from mine, but
> given an existing tool for recursion and one for comparison, I'm
> not sure that writing in C, which will require you to take care
> of both of those tasks yourself, is simpler. =A0But up to you how
> you want to do it, of course.
>
> stephan();
>
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