Date: Wed, 18 Sep 2002 07:56:23 +0900 From: "Akinori MUSHA" <knu@iDaemons.org> To: "David E. O'Brien" <obrien@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/gnu/usr.bin/grep Makefile grep.1 grep.c Message-ID: <86y9a05ip4.wl@archon.local.idaemons.org> In-Reply-To: <86ofayjsdr.wl@archon.local.idaemons.org> References: <200209160427.g8G4RUom036315@freefall.freebsd.org> <86ofayjsdr.wl@archon.local.idaemons.org>
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At Mon, 16 Sep 2002 16:38:56 +0900,
I wrote:
> At Sun, 15 Sep 2002 21:27:30 -0700 (PDT),
> o`brien wrote:
> > obrien 2002/09/15 21:27:30 PDT
> >
> > Modified files:
> > gnu/usr.bin/grep Makefile grep.1 grep.c
> > Log:
> > Create bzgrep.
>
> Neat. Thanks!
I found a couple of problems with the bz2 support:
1. The -J option is not listed in short_options[]. :)
2. Unlike gzread(), BZ2_bzread() does not work against a non-bzip2ed
stream. (I guess BZ2_bzread() should be fixed in future because
it claims to be compatible with gzread())
The attached patch should fix them and make `grep -J foo foo.bz2' work
just as expected.
--
/
/__ __ Akinori.org / MUSHA.org
/ ) ) ) ) / FreeBSD.org / Ruby-lang.org
Akinori MUSHA aka / (_ / ( (__( @ iDaemons.org / and.or.jp
"When I leave I don't know what I'm hoping to find
When I leave I don't know what I'm leaving behind.."
Index: grep.c
===================================================================
RCS file: /home/ncvs/src/gnu/usr.bin/grep/grep.c,v
retrieving revision 1.22
diff -u -r1.22 grep.c
--- grep.c 16 Sep 2002 04:27:29 -0000 1.22
+++ grep.c 17 Sep 2002 22:45:52 -0000
@@ -66,7 +66,7 @@
/* Short options. */
static char const short_options[] =
-"0123456789A:B:C::EFGHIRUVX:abcd:e:f:hiLlnqrsuvwxyZz";
+"0123456789A:B:C::EFGHIJRUVX:abcd:e:f:hiLlnqrsuvwxyZz";
/* Non-boolean long options that have no corresponding short equivalents. */
enum
@@ -490,14 +490,25 @@
{
ssize_t bytesread;
do
- if (BZflag)
+ if (BZflag && bzbufdesc)
{
- bytesread = BZ2_bzread (bzbufdesc, buffer + bufsalloc, readsize);
- /* gzread() will return "non-error" when given input that isn't
- its type of compression. So we need to mimic that behavor
- for the bzgrep case. */
- if (bytesread == -1)
- bytesread = 0;
+ int bzerr;
+ bytesread = BZ2_bzRead (&bzerr, bzbufdesc, buffer + bufsalloc, readsize);
+
+ switch (bzerr)
+ {
+ case BZ_OK:
+ case BZ_STREAM_END:
+ /* ok */
+ break;
+ case BZ_DATA_ERROR_MAGIC:
+ BZ2_bzReadClose (&bzerr, bzbufdesc); bzbufdesc = NULL;
+ bytesread = read (bufdesc, buffer + bufsalloc, readsize);
+ break;
+ default:
+ bytesread = 0;
+ break;
+ }
}
else
#if HAVE_LIBZ > 0
@@ -747,7 +758,7 @@
{
/* Close fd now, so that we don't open a lot of file descriptors
when we recurse deeply. */
- if (BZflag)
+ if (BZflag && bzbufdesc)
BZ2_bzclose(bzbufdesc);
else
#if HAVE_LIBZ > 0
@@ -923,7 +934,7 @@
if (list_files == 1 - 2 * status)
printf ("%s%c", filename, '\n' & filename_mask);
- if (BZflag)
+ if (BZflag && bzbufdesc)
BZ2_bzclose(bzbufdesc);
else
#if HAVE_LIBZ > 0
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