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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=
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."
echo "The supported compressors are gzip, bzip2, lzip and xz."
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
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 ;;
-[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 "$0: Pattern not found; use --help for usage." 1>&2
exit 1
fi
retval=0
for i in "$@" ; do
if [ "$i" = "--" ] && [ ${two_hyphens} = 0 ] ; then two_hyphens=1
else
if [ -f "$i" ]; then
case "$i" in
*.gz | *.tgz)
prog="gzip -cdfq" ;;
*.bz2 | *.tbz | *.tbz2)
prog="bzip2 -cdfq" ;;
*.lz | *.tlz)
prog="lzip -cdfq" ;;
*.xz | *.txz)
prog="xz -cdfq" ;;
*)
prog=cat ;;
esac
elif [ -f "$i.gz" ]; then i="$i.gz" ; prog="gzip -cdfq"
elif [ -f "$i.bz2" ]; then i="$i.bz2" ; prog="bzip2 -cdfq"
elif [ -f "$i.lz" ]; then i="$i.lz" ; prog="lzip -cdfq"
elif [ -f "$i.xz" ]; then i="$i.xz" ; prog="xz -cdfq"
else
echo "$0: File \"$i\" not found or not a regular file" 1>&2
if [ ${retval} = 0 ]; then retval=1 ; fi
continue
fi
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" "$i" | sed 's/\\\\/\\\\\\\\/g'`
j=`printf "%s" "$j" | sed 's/|/\\\\|/g'`
j=`printf "%s" "$j" | sed 's/&/\\\\&/g'`
j=`printf "%s" "$j" | tr '\n' ' '`
${prog} -- "$i" | grep ${args} | sed "s|^|${j}:|"
r=$?
fi
[ $r != 0 ] && retval="$r"
fi
done
exit ${retval}
|
