Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On Wednesday 26 September 2007, Donnie Berkholz wrote:
> On 00:02 Wed 26 Sep , Stephen Bennett wrote:
> > On Tue, 25 Sep 2007 11:10:34 +0200
> >
> > Robert Buchholz <[EMAIL PROTECTED]> wrote:
> > > I already wondered a while back:
> > > sed only fails if the file does not exist, but not if there was no
> > > replacement. Is there any way to force it to?
> >
> > Off the top of my head...
> >
> > sed -e '1{x;s/^/0/;x;ta;:a}'
> > -e 's/$STRING/$REPLACEMENT/'
> > -e 'Tb;x;s/^/1/;x;:b;${p;x;/^0/Q1;Q0};'
>
> I spent a few minutes trying to decipher that without luck. Could you
> walk me through it?
sed maintains two buffers - pattern and hold (which start out empty) and
that's the trick here
{ } - used to group commands together
1 - only match first line (it's an address match)
x - swap pattern space and hold space
s/^/0/ - turn the (now) empty pattern space into "0"
x - swap pattern space and hold space
ta - branch to label a if previous expression matched something
a: - the actual label "a" ... needed to reset branching conditions
Tb - branch to label b if previous expression matched something
x - swap pattern space and hold space
s/^/1/ - insert "1" into the pattern space
x - swap pattern space and hold space
:b - the actual label "b'
$ - only match the last line (it's an address match)
p - print current pattern space
x - swap pattern space and hold space
/^0/Q1;Q0 - if the pattern space starts with a 0, exit with 1 ... otherwise
continue on to the exit with 0 ... either way, quit without printing
the optional argument to Q is a GNU extension which isnt documented in the
manpage :( ... guess i'll send them a patch
pretty sure the first expression can be dropped:
sed -e 's/$STRING/$REPLACEMENT/' \
-e 'tb;x;s/^/1/;x;:b;${p;x;/^$/Q1;Q0};'
and the printing makes it a little reliant on how sed is used ... i think
something like this should work with -n:
-e 'Tb;x;s/^/1/;x;:b;${x;/^$/{x;q1};x;q0}'
-mike
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Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On 00:02 Wed 26 Sep , Stephen Bennett wrote:
> On Tue, 25 Sep 2007 11:10:34 +0200
> Robert Buchholz <[EMAIL PROTECTED]> wrote:
>
> > I already wondered a while back:
> > sed only fails if the file does not exist, but not if there was no
> > replacement. Is there any way to force it to?
>
> Off the top of my head...
>
> sed -e '1{x;s/^/0/;x;ta;:a}'
> -e 's/$STRING/$REPLACEMENT/'
> -e 'Tb;x;s/^/1/;x;:b;${p;x;/^0/Q1;Q0};'
I spent a few minutes trying to decipher that without luck. Could you
walk me through it?
Thanks,
Donnie
--
[EMAIL PROTECTED] mailing list
Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On 10:16 Tue 25 Sep , Doug Goldstein wrote: > Donnie Berkholz wrote: > > On 20:04 Mon 24 Sep , Doug Goldstein (cardoe) wrote: > > > >> cardoe 07/09/24 20:04:55 > >> > >> Modified: ChangeLog > >> Added:linuxtv-dvb-apps-1.1.1.20070924.ebuild > >> Log: > >> latest upstream snapshot. Includes many scan file updates. Drops > >> duplicate installs of scan files in /usr/share/dvb. > >> (Portage version: 2.1.3.9) > I simply cp'd the previous revision to the new revision so it would pull > now a newer upstream tarball then one from middle January. File a bug > with the maintainers. I feel a responsibility to commit the best, most bug-free code I can, regardless of whether I created the bug. Don't you? Thanks, Donnie -- [EMAIL PROTECTED] mailing list
Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On Tue, 25 Sep 2007 11:10:34 +0200
Robert Buchholz <[EMAIL PROTECTED]> wrote:
> I already wondered a while back:
> sed only fails if the file does not exist, but not if there was no
> replacement. Is there any way to force it to?
Off the top of my head...
sed -e '1{x;s/^/0/;x;ta;:a}'
-e 's/$STRING/$REPLACEMENT/'
-e 'Tb;x;s/^/1/;x;:b;${p;x;/^0/Q1;Q0};'
--
[EMAIL PROTECTED] mailing list
Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On Tuesday 25 September 2007, Robert Buchholz wrote: > On Tuesday, 25. September 2007, Donnie Berkholz wrote: > > On 20:04 Mon 24 Sep , Doug Goldstein (cardoe) wrote: > > > if ! use usb; then > > > sed -i util/Makefile \ > > > -e '/ttusb_dec_reset/d' \ > > > -e '/dib3000-watch/d' > > > fi > > > > > > # do not compile test-progs > > > sed -i Makefile -e '/-C test/d' > > > > You might want to die if these seds fail. > > I already wondered a while back: > sed only fails if the file does not exist, but not if there was no > replacement. Is there any way to force it to? i'm fairly certain the answer is no -mike signature.asc Description: This is a digitally signed message part.
[gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
Donnie Berkholz wrote: > On 20:04 Mon 24 Sep , Doug Goldstein (cardoe) wrote: > >> cardoe 07/09/24 20:04:55 >> >> Modified: ChangeLog >> Added:linuxtv-dvb-apps-1.1.1.20070924.ebuild >> Log: >> latest upstream snapshot. Includes many scan file updates. Drops duplicate >> installs of scan files in /usr/share/dvb. >> (Portage version: 2.1.3.9) >> > > >> 1.1 >> media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild >> >> file : >> http://sources.gentoo.org/viewcvs.py/gentoo-x86/media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild?rev=1.1&view=markup >> plain: >> http://sources.gentoo.org/viewcvs.py/gentoo-x86/media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild?rev=1.1&content-type=text/plain >> > > Numerous instances of D, S, T without quotes. > > >> if ! use usb; then >> sed -i util/Makefile \ >> -e '/ttusb_dec_reset/d' \ >> -e '/dib3000-watch/d' >> fi >> >> # do not compile test-progs >> sed -i Makefile -e '/-C test/d' >> > > You might want to die if these seds fail. > > Thanks, > Donnie > I simply cp'd the previous revision to the new revision so it would pull now a newer upstream tarball then one from middle January. File a bug with the maintainers. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On Tuesday, 25. September 2007, Donnie Berkholz wrote: > On 20:04 Mon 24 Sep , Doug Goldstein (cardoe) wrote: > > if ! use usb; then > > sed -i util/Makefile \ > > -e '/ttusb_dec_reset/d' \ > > -e '/dib3000-watch/d' > > fi > > > > # do not compile test-progs > > sed -i Makefile -e '/-C test/d' > > You might want to die if these seds fail. I already wondered a while back: sed only fails if the file does not exist, but not if there was no replacement. Is there any way to force it to? Regards, Robert signature.asc Description: This is a digitally signed message part.
[gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in media-tv/linuxtv-dvb-apps: ChangeLog linuxtv-dvb-apps-1.1.1.20070924.ebuild
On 20:04 Mon 24 Sep , Doug Goldstein (cardoe) wrote: > cardoe 07/09/24 20:04:55 > > Modified: ChangeLog > Added:linuxtv-dvb-apps-1.1.1.20070924.ebuild > Log: > latest upstream snapshot. Includes many scan file updates. Drops duplicate > installs of scan files in /usr/share/dvb. > (Portage version: 2.1.3.9) > 1.1 > media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild > > file : > http://sources.gentoo.org/viewcvs.py/gentoo-x86/media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild?rev=1.1&view=markup > plain: > http://sources.gentoo.org/viewcvs.py/gentoo-x86/media-tv/linuxtv-dvb-apps/linuxtv-dvb-apps-1.1.1.20070924.ebuild?rev=1.1&content-type=text/plain Numerous instances of D, S, T without quotes. > if ! use usb; then > sed -i util/Makefile \ > -e '/ttusb_dec_reset/d' \ > -e '/dib3000-watch/d' > fi > > # do not compile test-progs > sed -i Makefile -e '/-C test/d' You might want to die if these seds fail. Thanks, Donnie -- [EMAIL PROTECTED] mailing list
