Date: Fri, 01 Sep 2006 13:06:06 -0700 From: Julian Elischer <julian@elischer.org> To: Oliver Fromme <olli@lurza.secnetix.de> Cc: freebsd-current@freebsd.org Subject: Re: suggested addition to 'date' Message-ID: <44F892AE.8040409@elischer.org> In-Reply-To: <200609011707.k81H7Ych050627@lurza.secnetix.de> References: <200609011707.k81H7Ych050627@lurza.secnetix.de>
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Oliver Fromme wrote: >Julian Elischer wrote: > > Oliver Fromme wrote: > > > John Baldwin wrote: > > > > Oliver Fromme wrote: > > > > > There's another possibility, which doesn't require a new > > > > > option letter at all. You could add a new escape sequence > > > > > to the format string, e.g. "%*". Whenever date(1) is > > > > > called with a format string containing that sequence, it > > > > > goes into filter mode and replaces the sequence with the > > > > > current line. That would also enable you to be more > > > > > flexible with the placement of the timestamps. > > > > > For example: > > > > > > > > > > $ printf 'foo\nbar\nbaz\n' | date +'%H:%M:%S %*' > > > > > 16:39:58 foo > > > > > 16:39:58 bar > > > > > 16:39:58 baz > > > > > > > > I prefer this of all the suggestions so far. > > > > > > It's not very difficult, so I created a patch which does > > > exactly that (includes an addition for the manpage, too). > > > I've submitted it as bin/102609: > > > > > > http://www.freebsd.org/cgi/query-pr.cgi?pr=102609 > > > > A couple of comments: > > > > you don't need to run strftime for each line if the time hasn't changed. > > (My original patch checks this) > >Good idea. I'll update the patch. > > > What is the effective maximum line length for a single fgetln? > >It's unlimited. fgetln() allocates sufficient amount of >memory dynamically, that's why I used it instead of fgets(). >It avoids reinventing the wheel. > > NOTHING is unlimitted. what happens with a 3GB sequence of characters with no newlines? >Best regards > Oliver > > >
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