135 lines
3.6 KiB
Bash
Executable file
135 lines
3.6 KiB
Bash
Executable file
#! /bin/sh
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# Lzgrep - Grep wrapper for compressed files.
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# Copyright (C) 2008, 2009 Antonio Diaz Diaz.
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#
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# This script is free software: you have unlimited permission
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# to copy, distribute and modify it.
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LC_ALL=C
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export LC_ALL
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invocation_name=$0
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args=
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default_prog=lzip
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have_pat=0
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list=0
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no_name=0
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# Loop over args until pattern is found
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while [ x"$1" != x ] ; do
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case "$1" in
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--help | --he* | -h)
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echo "Lzgrep - Grep wrapper for compressed files."
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echo
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echo "Lzgrep is a wrapper script around the grep command that allows"
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echo "transparent search on any combination of compressed and non-compressed"
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echo "files. If any given file is compressed, its uncompressed content is"
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echo "used. If a given file does not exist, lzgrep tries the compressed file"
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echo "name corresponding to the default compressor selected. The supported"
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echo "compressors are gzip, bzip2 and lzip."
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echo
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echo "Usage: ${invocation_name} [OPTIONS] [GREP_OPTIONS] PATTERN [FILES]"
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echo
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echo "GREP_OPTIONS are passed directly to grep."
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echo "The exit status from grep is preserved."
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echo
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echo "Options:"
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echo " -h, --help display this help and exit"
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echo " -V, --version output version information and exit"
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echo " --gzip use gzip as default decompressor"
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echo " --bzip2 use bzip2 as default decompressor"
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echo " --lzip use lzip as default decompressor (default)"
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echo
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echo "Report bugs to lzip-bug@nongnu.org"
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echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html"
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exit 0 ;;
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--version | --ve* | -V)
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echo "Lzgrep 0.5"
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echo "Copyright (C) 2009 Antonio Diaz Diaz."
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echo "This script is free software: you have unlimited permission"
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echo "to copy, distribute and modify it."
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exit 0 ;;
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--gz*)
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default_prog=gzip ;;
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--bz*)
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default_prog=bzip2 ;;
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--lz*)
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default_prog=lzip ;;
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-[drRzZ] | --di* | --exc* | --inc* | --nu* | --rec*)
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echo "${invocation_name}: option $1 not supported"
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exit 1 ;;
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-e?* | -f?* | --file=* | --reg*=*)
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args="${args} $1"; have_pat=1 ;;
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-e | -f | --file | --reg*)
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args="${args} $1 $2"; shift; have_pat=1 ;;
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--*=*)
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args="${args} $1" ;;
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-[ABCDm] | --af* | --be* | --binary-* | --con* | --de* | --[lm]a*)
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args="${args} $1 $2"; shift ;;
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-l | --files-with-*)
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args="${args} $1"; list=1 ;;
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-h | --no-f*)
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args="${args} $1"; no_name=1 ;;
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--)
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break ;;
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-?*)
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args="${args} $1" ;;
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*)
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if test ${have_pat} = 0; then args="${args} $1"; have_pat=1
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else break
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fi ;;
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esac
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shift
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done
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if test ${have_pat} = 0; then
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echo "${invocation_name}: Pattern not found; use --help for usage." 1>&2
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exit 1
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fi
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if test $# -eq 0; then
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${default_prog} -cdfq | grep ${args}
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exit $?
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fi
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retval=0
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for i in "$@" ; do
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prog="${default_prog} -cdfq"
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case "$i" in
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*.gz | *.tgz)
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prog="gzip -cdfq" ;;
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*.bz2 | *.tbz | *.tbz2)
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prog="bzip2 -cdfq" ;;
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*.lz | *.tlz)
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prog="lzip -cdfq" ;;
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*)
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if test -f "$i"; then prog=cat
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else
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case ${default_prog} in
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gzip)
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if test -f "$i.gz"; then i="$i.gz"; fi ;;
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bzip2)
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if test -f "$i.bz2"; then i="$i.bz2"; fi ;;
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lzip)
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if test -f "$i.lz"; then i="$i.lz"; fi ;;
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esac
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fi ;;
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esac
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if test ${list} -eq 1; then
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${prog} -- "$i" | grep ${args} 2>&1 > /dev/null && echo "$i"
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r=$?
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elif test $# -eq 1 -o ${no_name} -eq 1; then
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${prog} -- "$i" | grep ${args}
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r=$?
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else
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j=`printf "%s" "$i" | sed 's/\\\\/\\\\\\\\/g'`
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j=`printf "%s" "$j" | sed 's/|/\\\\|/g'`
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j=`printf "%s" "$j" | sed 's/&/\\\\&/g'`
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j=`printf "%s" "$j" | tr '\n' ' '`
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${prog} -- "$i" | grep ${args} | sed "s|^|${j}:|"
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r=$?
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fi
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test "$r" -ne 0 && retval="$r"
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done
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exit ${retval}
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