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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
invocation_name=$0
args=
default_prog=lzip
have_pat=0
list=0
no_name=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 "name corresponding to the default compressor selected. The supported"
echo "compressors are gzip, bzip2, lzip and xz."
echo
echo "Usage: ${invocation_name} [OPTIONS] [GREP_OPTIONS] PATTERN [FILES]"
echo
echo "GREP_OPTIONS are passed directly to grep."
echo "The exit status from grep is preserved."
echo
echo "Options:"
echo " -h, --help display this help and exit"
echo " -V, --version output version information and exit"
echo " --gzip use gzip as default decompressor"
echo " --bzip2 use bzip2 as default decompressor"
echo " --lzip use lzip as default decompressor (default)"
echo " --xz use xz as default decompressor"
echo
echo "Report bugs to lzip-bug@nongnu.org"
echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html"
exit 0 ;;
--version | --ve* | -V)
echo "Zgrep VERSION"
echo "Copyright (C) 2009 Antonio Diaz Diaz."
echo "This script is free software: you have unlimited permission"
echo "to copy, distribute and modify it."
exit 0 ;;
--gz*)
default_prog=gzip ;;
--bz*)
default_prog=bzip2 ;;
--lz*)
default_prog=lzip ;;
--xz*)
default_prog=xz ;;
-[drRzZ] | --di* | --exc* | --inc* | --nu* | --rec*)
echo "${invocation_name}: 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} $1"; no_name=1 ;;
--)
break ;;
-?*)
args="${args} $1" ;;
*)
if test ${have_pat} = 0; then args="${args} $1"; have_pat=1
else break
fi ;;
esac
shift
done
if test ${have_pat} = 0; then
echo "${invocation_name}: Pattern not found; use --help for usage." 1>&2
exit 1
fi
if test $# -eq 0; then
${default_prog} -cdfq | grep ${args}
exit $?
fi
retval=0
for i in "$@" ; do
prog="${default_prog} -cdfq"
case "$i" in
*.gz | *.tgz)
prog="gzip -cdfq" ;;
*.bz2 | *.tbz | *.tbz2)
prog="bzip2 -cdfq" ;;
*.lz | *.tlz)
prog="lzip -cdfq" ;;
*.xz | *.txz)
prog="xz -cdfq" ;;
*)
if test -f "$i"; then prog=cat
else
case ${default_prog} in
gzip)
if test -f "$i.gz"; then i="$i.gz"; fi ;;
bzip2)
if test -f "$i.bz2"; then i="$i.bz2"; fi ;;
lzip)
if test -f "$i.lz"; then i="$i.lz"; fi ;;
xz)
if test -f "$i.xz"; then i="$i.xz"; fi ;;
esac
fi ;;
esac
if test ${list} -eq 1; then
${prog} -- "$i" | grep ${args} 2>&1 > /dev/null && echo "$i"
r=$?
elif test $# -eq 1 -o ${no_name} -eq 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=$?
fi
test "$r" -ne 0 && retval="$r"
done
exit ${retval}
|
