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Date:	Thu, 22 Sep 2011 14:43:59 +0200
From:	Marco atzeri <marco DOT atzeri AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: 'cygcheck -f' pattern syntax.
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On 9/22/2011 2:10 PM, Oleksandr Gavenko wrote:
> $ time cygcheck -f 'stdio.h'
> real 0m1.016s
> user 0m0.031s
> sys 0m0.015s
> $ time cygcheck -f '*stdio.h'
> $ time cygcheck -f '*stdio.h'
> $ time cygcheck -f '*stdio.h'
> $ time cygcheck -f /usr/include/stdio.h
> cygwin-1.7.9-1
>
> real 0m0.907s
> user 0m0.015s
> sys 0m0.031s
>
> So 'cygcheck -f' does not allow 'glob' and 'regex'.
>
> I write simple script that allow use regex:
>
> #!/bin/sh
>
> regex=$(echo "$1" | sed -e 's|\\|&&|g' -e 's|=|\\=|g')
>
> for file in /etc/setup/*.lst.gz; do
> name=${file#/etc/setup/}
> name=${name%.lst.gz}
> gzip -d -c $file | sed -n "\=$regex={s=^=$name: /=;p;}"
> done
>
> But this script is extremely slow:
>
> $ time ./cygsearch.sh 'bin/emacs'
> emacs: /usr/bin/emacs-nox.exe
> emacs: /usr/bin/emacs.ico
> emacs: /usr/bin/emacsclient.exe
> emacs-X11: /usr/bin/emacs-X11.exe
>
> real 0m38.797s
> user 0m44.620s
> sys 0m25.574s
>

much faster

$ time cp /etc/setup/*.gz .

real    0m1.450s
user    0m0.061s
sys     0m1.202s

$ time gunzip *.gz

real    0m1.937s
user    0m0.170s
sys     0m1.764s

$ time grep -H "stdio.h" *.lst
cygwin.lst:usr/include/stdio.h
cygwin.lst:usr/include/sys/stdio.h
gcc4-core.lst:usr/lib/gcc/i686-pc-cygwin/4.5.3/include/ssp/stdio.h
gcc4-g++.lst:usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/tr1/stdio.h
libboost-devel.lst:usr/include/boost/iostreams/filter/stdio.hpp
libglib2.0-devel.lst:usr/include/glib-2.0/glib/gstdio.h
libhdf5-devel.lst:usr/include/H5FDstdio.h
libicu-devel.lst:usr/include/unicode/ustdio.h
mingw-gcc-core.lst:usr/lib/gcc/i686-pc-mingw32/4.5.2/include/ssp/stdio.h
mingw-runtime.lst:usr/i686-pc-mingw32/sys-root/mingw/include/stdio.h
mingw64-i686-gcc-core.lst:usr/lib/gcc/i686-w64-mingw32/4.5.3/include/ssp/stdio.h
mingw64-i686-gcc-g++.lst:usr/lib/gcc/i686-w64-mingw32/4.5.3/include/c++/tr1/stdio.h
mingw64-i686-headers.lst:usr/i686-w64-mingw32/sys-root/mingw/include/stdio.h
perl.lst:usr/lib/perl5/5.10/i686-cygwin/CORE/nostdio.h
splint.lst:usr/share/splint/lib/stdio.h

real    0m0.816s
user    0m0.046s
sys     0m0.781s


Regards
Marco



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