Revert to old zstdgrep
This commit is contained in:
Bimba Shrestha
parent
ad34d58218
commit
9b13077cfb
@ -28,6 +28,8 @@ zcat=${ZCAT:-zstdcat}
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endofopts=0
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pattern_found=0
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grep_args=""
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hyphen=0
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silent=0
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prog=${0##*/}
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@ -41,158 +43,92 @@ esac
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# skip all options and pass them on to grep taking care of options
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# with arguments, and if -e was supplied
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escape='
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s/'\''/'\''\\'\'''\''/g
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$s/$/'\''/
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'
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# We might want to create a c program in the future
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# and replace this file with that if these
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# unsupported options become necessary
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usage="Usage: $0 [OPTION]... [-e] PATTERN [FILE]...
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OPTIONs are the same as grep with the exception of
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the following unsupported options:
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--dereference-recursive (-R)
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--directories (-d)
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--exclude
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--exclude-from
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--exclude-dir
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--include
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--null (-Z),
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--null-data (-z)
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--recursive (-r)
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grep --help below:
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"
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operands=
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files_with_matches=0
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files_without_matches=0
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no_filename=0
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with_filename=0
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while [ "$#" -gt 0 ] && [ "${endofopts}" -eq 0 ]; do
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option=$1
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shift
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optarg=
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case $option in
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(-[0123456789EFGHIKLPRTUVZabchilnoqrsuvwxyz]?*)
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arg2=-\'$(expr "X$option" : 'X-.[0-9]*\(.*\)' | sed "$escape")
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eval "set -- $arg2 "'${1+"$@"}'
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option=$(expr "X$option" : 'X\(-.[0-9]*\)');;
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(--binary-*=* | --[lm]a*=* | --reg*=*) ;;
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(-[ABCDXdefm] | binary-* | --file | --[lm]a* | --reg*)
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case ${1?"$option option requires an argument"} in
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(*\'*) optarg=" '"$(printf '%s\n' "$1" | sed "$escape");;
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(*) optarg=" '$1'";;
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case "$1" in
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# from GNU grep-2.5.1 -- keep in sync!
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-[ABCDXdefm])
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if [ "$#" -lt 2 ]; then
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printf '%s: missing argument for %s flag\n' "${prog}" "$1" >&2
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exit 1
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fi
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case "$1" in
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-e)
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pattern="$2"
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pattern_found=1
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shift 2
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break
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;;
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-f)
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pattern_found=2
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;;
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*)
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;;
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esac
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shift;;
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(-f?*\'*) optarg=" '"$(expr "X$option" : 'X-f\(.*\)' | sed "$escape"); option=-f;;
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(-f?*) optarg=" '"$(expr "X$option" : 'X-f\(.*\)')\'; option=-f;;
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(--file=*\'*) optarg=" '"$(expr "X$option" : 'X--file=\(.*\)' | sed "$escape"); option=--file;;
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(--file=*) optarg=" '"$(expr "X$option" : 'X--file=\(.*\)')\'; option=--file;;
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(--) endofopts=1; break;;
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(-?*) ;;
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(*)
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case $option in
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(*\'*) operands="$operands '"$(printf '%s\n' "$option" | sed "$escape");;
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(*) operands="$operands '$option'";;
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esac
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${POSIXLY_CORRECT+break}
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grep_args="${grep_args} $1 $2"
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shift 2
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;;
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--)
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shift
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endofopts=1
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continue;;
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esac
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case $option in
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(-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*)
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printf >&2 '%s: %s: option not supported\n' "$0" "$option"
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exit 2;;
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(-e* | --reg*) pattern_found=1;;
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(-f | --file)
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case $optarg in
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(" '-'" | " '/dev/stdin'" | " '/dev/fd/0'")
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option=-e
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optarg=" '"$(sed "$escape") || exit 2;;
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esac
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pattern_found=1;;
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(--h | --he | --hel | --help) echo "$usage"; eval "$grep --help" || exit 2; exit;;
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(-H | --wi | --wit | --with | --with- | --with-f | --with-fi \
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| --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \
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| --with-filename)
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with_filename=1
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continue;;
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(-l | --files-with-*) files_with_matches=1;;
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(-L | --files-witho*) files_without_matches=1;;
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(-h | --no-f*) no_filename=1;;
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esac
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case $option in
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(*\'?*) option=\'$(printf '%s\n' "$option" | sed "$escape");;
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(*) option="'$option'";;
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esac
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grep_args="$option$optarg"
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grep="$grep $grep_args"
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done
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eval "set -- $operands "'${1+"$@"}'
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if test $pattern_found -eq 0; then
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case ${1?"missing pattern; try \`$0 --help' for help"} in
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(*\'*) grep="$grep -- '"$(printf '%s\n' "$1" | sed "$escape");;
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(*) grep="$grep -- '$1'";;
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;;
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-)
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hyphen=1
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shift
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;;
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-h)
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silent=1
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shift
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;;
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-*)
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grep_args="${grep_args} $1"
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shift
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;;
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*)
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# pattern to grep for
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endofopts=1
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;;
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esac
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shift
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fi
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if test $# -eq 0; then
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set -- -
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fi
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exec 3>&1
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res=0
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for i do
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zcat_status=$(
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exec 5>&1
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($zcat -- "$i" 5>&-; echo $? >&5) 3>&- |
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if test $files_with_matches -eq 1; then
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eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; }
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elif test $files_without_matches -eq 1; then
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eval "$grep" >/dev/null || {
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r=$?
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if test $r -eq 1; then
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printf '%s\n' "$i" || r=2
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fi
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exit $r
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}
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elif test $with_filename -eq 0 && { test $# -eq 1 || test $no_filename -eq 1; }; then
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eval "$grep"
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else
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case $i in
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(*'
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'* | *'&'* | *'\'* | *'|'*)
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i=$(printf '%s\n' "$i" |
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sed '
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$!N
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$s/[&\|]/\\&/g
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$s/\n/\\n/g
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');;
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esac
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sed_script="s|^|$i:|"
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# Fail if grep or sed fails.
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r=$(
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exec 4>&1
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(eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
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) && exit $r
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r=$?
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test 1 -lt $r && exit $r || exit 2
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fi >&3 5>&-
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)
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r=$?
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test 128 -lt $r && exit $r
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test "$zcat_status" -eq 0 || test "$zcat_status" -eq 2 || r=2
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test $res -lt $r && res=$r
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done
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exit $res
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# if no -e option was found, take next argument as grep-pattern
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if [ "${pattern_found}" -lt 1 ]; then
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if [ "$#" -ge 1 ]; then
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pattern="$1"
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shift
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elif [ "${hyphen}" -gt 0 ]; then
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pattern="-"
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else
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printf '%s: missing pattern\n' "${prog}" >&2
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exit 1
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fi
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fi
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EXIT_CODE=0
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# call grep ...
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if [ "$#" -lt 1 ]; then
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# ... on stdin
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set -f # Disable file name generation (globbing).
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# shellcheck disable=SC2086
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"${zcat}" - | "${grep}" ${grep_args} -- "${pattern}" -
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EXIT_CODE=$?
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set +f
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else
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# ... on all files given on the command line
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if [ "${silent}" -lt 1 ] && [ "$#" -gt 1 ]; then
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grep_args="-H ${grep_args}"
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fi
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set -f
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while [ "$#" -gt 0 ]; do
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# shellcheck disable=SC2086
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if [ $pattern_found -eq 2 ]; then
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"${zcat}" -- "$1" | "${grep}" --label="${1}" ${grep_args} -- -
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else
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"${zcat}" -- "$1" | "${grep}" --label="${1}" ${grep_args} -- "${pattern}" -
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fi
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[ "$?" -ne 0 ] && EXIT_CODE=1
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shift
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done
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set +f
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fi
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exit "${EXIT_CODE}"
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