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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}