diff options
Diffstat (limited to 'programs/zstdgrep')
| -rwxr-xr-x | programs/zstdgrep | 141 |
1 files changed, 74 insertions, 67 deletions
diff --git a/programs/zstdgrep b/programs/zstdgrep index 9f871c03f1aa..a10e0710a296 100755 --- a/programs/zstdgrep +++ b/programs/zstdgrep @@ -31,94 +31,101 @@ grep_args="" hyphen=0 silent=0 -prg=$(basename $0) +prg=$(basename "$0") # handle being called 'zegrep' or 'zfgrep' -case ${prg} in - *zegrep) - grep_args="-E";; - *zfgrep) - grep_args="-F";; +case "${prg}" in + *zegrep) grep_args="-E";; + *zfgrep) grep_args="-F";; esac # skip all options and pass them on to grep taking care of options # with arguments, and if -e was supplied -while [ $# -gt 0 -a ${endofopts} -eq 0 ] -do - case $1 in +while [ "$#" -gt 0 ] && [ "${endofopts}" -eq 0 ]; do + case "$1" in # from GNU grep-2.5.1 -- keep in sync! - -[ABCDXdefm]) - if [ $# -lt 2 ] - then - echo "${prg}: missing argument for $1 flag" >&2 - exit 1 - fi - case $1 in - -e) - pattern="$2" - pattern_found=1 - shift 2 - break - ;; - *) - ;; - esac - grep_args="${grep_args} $1 $2" - shift 2 - ;; - --) - shift - endofopts=1 - ;; - -) - hyphen=1 - shift - ;; - -h) - silent=1 - shift - ;; - -*) - grep_args="${grep_args} $1" - shift - ;; - *) - # pattern to grep for - endofopts=1 - ;; + -[ABCDXdefm]) + if [ "$#" -lt 2 ]; then + printf '%s: missing argument for %s flag\n' "${prg}" "$1" >&2 + exit 1 + fi + case "$1" in + -e) + pattern="$2" + pattern_found=1 + shift 2 + break + ;; + *) + ;; + esac + grep_args="${grep_args} $1 $2" + shift 2 + ;; + --) + shift + endofopts=1 + ;; + -) + hyphen=1 + shift + ;; + -h) + silent=1 + shift + ;; + -*) + grep_args="${grep_args} $1" + shift + ;; + *) + # pattern to grep for + endofopts=1 + ;; esac done # if no -e option was found, take next argument as grep-pattern -if [ ${pattern_found} -lt 1 ] -then - if [ $# -ge 1 ]; then - pattern="$1" - shift - elif [ ${hyphen} -gt 0 ]; then - pattern="-" +if [ "${pattern_found}" -lt 1 ]; then + if [ "$#" -ge 1 ]; then + pattern="$1" + shift + elif [ "${hyphen}" -gt 0 ]; then + pattern="-" else - echo "${prg}: missing pattern" >&2 - exit 1 + printf '%s: missing pattern\n' "${prg}" >&2 + exit 1 fi fi +EXIT_CODE=0 # call grep ... -if [ $# -lt 1 ] -then +if [ "$#" -lt 1 ]; then # ... on stdin - ${zcat} -fq - | ${grep} ${grep_args} -- "${pattern}" - + set -f # Disable file name generation (globbing). + # shellcheck disable=SC2086 + "${zcat}" -fq - | "${grep}" ${grep_args} -- "${pattern}" - + EXIT_CODE=$? + set +f else # ... on all files given on the command line - if [ ${silent} -lt 1 -a $# -gt 1 ]; then - grep_args="-H ${grep_args}" + if [ "${silent}" -lt 1 ] && [ "$#" -gt 1 ]; then + grep_args="-H ${grep_args}" fi - while [ $# -gt 0 ] - do - ${zcat} -fq -- "$1" | ${grep} --label="${1}" ${grep_args} -- "${pattern}" - - shift + CUR_EXIT_CODE=0 + EXIT_CODE=1 + set -f + while [ "$#" -gt 0 ]; do + # shellcheck disable=SC2086 + "${zcat}" -fq -- "$1" | "${grep}" --label="${1}" ${grep_args} -- "${pattern}" - + CUR_EXIT_CODE=$? + if [ "${CUR_EXIT_CODE}" -eq 0 ] && [ "${EXIT_CODE}" -ne 1 ]; then + EXIT_CODE=0 + fi + shift done + set +f fi -exit 0 +exit "${EXIT_CODE}" |