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|
#! /bin/sh
# Zgrep - Grep wrapper for compressed files.
# Copyright (C) 2008, 2009 Antonio Diaz Diaz.
#
# This script is free software: you have unlimited permission
# to copy, distribute and modify it.
LC_ALL=C
export LC_ALL
args=
default_prog=gzip
have_pat=0
list=0
no_name=0
two_hyphens=0
# Loop over args until pattern is found
while [ x"$1" != x ] ; do
case "$1" in
--help | --he* | -h)
echo "Zgrep - Grep wrapper for compressed files."
echo
echo "Zgrep is a wrapper script around the grep command that allows"
echo "transparent search on any combination of compressed and non-compressed"
echo "files. If any given file is compressed, its uncompressed content is"
echo "used. If a given file does not exist, zgrep tries the compressed file"
echo "names corresponding to the supported compressors. If no files are"
echo "specified, the standard input is decompressed using the selected"
echo "compressor and fed to grep."
echo "The supported compressors are gzip, bzip2, lzip and xz."
echo
echo "Zegrep is a shortcut for \"zgrep -E\""
echo "Zfgrep is a shortcut for \"zgrep -F\""
echo
echo "Usage: $0 [OPTIONS] [GREP_OPTIONS] PATTERN [FILES]"
echo
echo "GREP_OPTIONS are passed directly to grep."
echo "The exit status from grep is preserved."
echo
echo "Options:"
echo " -h, --help display this help and exit"
echo " -V, --version output version information and exit"
echo " --gzip use gzip as decompressor for stdin (default)"
echo " --bzip2 use bzip2 as decompressor for stdin"
echo " --lzip use lzip as decompressor for stdin"
echo " --xz use xz as decompressor for stdin"
echo
echo "Report bugs to zutils-bug@nongnu.org"
echo "Zutils home page: http://www.nongnu.org/zutils/zutils.html"
exit 0 ;;
--version | --ve* | -V)
echo "Zgrep VERSION"
echo "Copyright (C) 2009 Antonio Diaz Diaz."
echo "This script is free software: you have unlimited permission"
echo "to copy, distribute and modify it."
exit 0 ;;
--gz*)
default_prog=gzip ;;
--bz*)
default_prog=bzip2 ;;
--lz*)
default_prog=lzip ;;
--xz*)
default_prog=xz ;;
-[drRzZ] | --di* | --exc* | --inc* | --nu* | --rec*)
echo "$0: option $1 not supported"
exit 1 ;;
-e?* | -f?* | --file=* | --reg*=*)
args="${args} $1"; have_pat=1 ;;
-e | -f | --file | --reg*)
args="${args} $1 $2"; shift; have_pat=1 ;;
--*=*)
args="${args} $1" ;;
-[ABCDm] | --af* | --be* | --binary-* | --con* | --de* | --[lm]a*)
args="${args} $1 $2"; shift ;;
-l | --files-with-*)
args="${args} $1"; list=1 ;;
-h | --no-f*)
args="${args} $1"; no_name=1 ;;
--)
shift ; two_hyphens=1 ; break ;;
-?*)
args="${args} $1" ;;
*)
if [ ${have_pat} = 0 ]; then args="${args} $1"; have_pat=1
else break
fi ;;
esac
shift
done
if [ ${have_pat} = 0 ]; then
echo "$0: Pattern not found; use --help for usage." 1>&2
exit 1
fi
if [ $# = 0 ]; then
${default_prog} -cdfq | grep ${args}
exit $?
fi
retval=0
for i in "$@" ; do
if [ "$i" = "--" ] && [ ${two_hyphens} = 0 ] ; then two_hyphens=1
else
if [ ! -f "$i" ]; then
if [ -f "$i.gz" ]; then i="$i.gz"
elif [ -f "$i.bz2" ]; then i="$i.bz2"
elif [ -f "$i.lz" ]; then i="$i.lz"
elif [ -f "$i.xz" ]; then i="$i.xz"
else
echo "$0: File \"$i\" not found or not a regular file" 1>&2
if [ ${retval} = 0 ]; then retval=1 ; fi
continue
fi
fi
bindir=`echo "$0" | sed -e 's,[^/]*$,,'`
prog_name=`"${bindir}"zutils -t -- "$i"`
case "${prog_name}" in
gzip) prog="gzip -cdfq" ;;
bzip2) prog="bzip2 -cdfq" ;;
lzip) prog="lzip -cdfq" ;;
xz) prog="xz -cdfq" ;;
*) prog=cat ;;
esac
if [ ${list} = 1 ]; then
${prog} -- "$i" | grep ${args} 2>&1 > /dev/null && echo "$i"
r=$?
elif [ $# = 1 ] || [ ${no_name} = 1 ]; then
${prog} -- "$i" | grep ${args}
r=$?
else
j=`printf "%s" "$i" | sed -e 's,\\\\,\\\\\\\\,g'`
j=`printf "%s" "$j" | sed -e 's,|,\\\\|,g'`
j=`printf "%s" "$j" | sed -e 's,&,\\\\&,g'`
j=`printf "%s" "$j" | tr '\n' ' '`
${prog} -- "$i" | grep ${args} | sed -e "s,^,${j}:,"
r=$?
fi
[ $r != 0 ] && retval="$r"
fi
done
exit ${retval}
|
