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#!/bin/sh # # zipgrep: Use unzip and egrep to search the specified members of a # Zip archive for a string or pattern. Search all members if no members # are specified explicitly. The script attempts to handle egrep's "-h" # and "-l" options internally. # # This script assumes that the desired "unzip" and "egrep" (and "sed") # programs are on the user's PATH. # pat="" opt="" while test $# -ne 0; do case "$1" in -e | -f) opt="$opt $1"; shift; pat="$1";; -*) opt="$opt $1";; *) if test -z "$pat"; then pat="$1" else break; fi;; esac shift done if test $# = 0; then echo usage: `basename "$0"` "[egrep_options] pattern zipfile [members...]" echo Uses unzip and egrep to search the zip members for a string or pattern. exit 1 fi zipfile="$1"; shift list=0 silent=0 opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'` case "$opt" in *l*) list=1; opt=`echo $opt | sed s/l//` esac case "$opt" in *h*) silent=1 esac if test -n "$opt"; then opt="-$opt" fi status_grep_global=1 IFS=' ' # Escape shell-special characters in "pat". pat=` echo "$pat" | \ sed -e 's/\\\\/\\\\\\\\/g' -e 's/|/\\\|/g' -e 's/&/\\\&/g' ` # Use "unzip -Z1" to get a listing of the specified members from the # specified archive. Escape any backslashes in a file name. for i in `unzip -Z1 "$zipfile" ${1+"$@"} | sed -e 's/\\\\/\\\\\\\\/g' `; do if test $list -eq 1; then # "-l": Show only the archive member name, not the matching line(s). unzip -p-L "$zipfile" "$i" | \ egrep $opt "$pat" > /dev/null && echo "$i" status_grep=$? elif test $silent -eq 1; then # "-h": Show only the matching line(s), not the archive member name. # ("-s" in "opt" will silence "egrep", stopping all output.) unzip -p-L "$zipfile" "$i" | \ egrep $opt "$pat" status_grep=$? else # Escape (or re-escape) shell-special characters in the archive # member name, "i". i=` echo "$i" | \ sed -e 's/\\\\/\\\\\\\\/g' -e 's/|/\\\|/g' -e 's/&/\\\&/g' ` # Globally, send fd 4 to stdout. In the pipeline, send normal # stdout to fd 4, and send grep status to fd 3. Collect fd 3 # with ``. exec 4>&1 status_grep=` ( \ ( unzip -p-L "$zipfile" "$i" | \ egrep $opt "$pat" 1>&4 ; echo $? >&3 ) 4>&1 | \ sed "s|^|${i}:|" 1>&4 \ ) 3>&1 ` fi # Save the primary command status. (May be the grep status.) sts=$? # If this grep status was zero, set the global grep status to zero. test "$status_grep" -eq 0 && status_grep_global=0 # If this grep status was not zero or one, exit now. test "$status_grep" -gt 1 && exit "$status_grep" done # If "sts" is good (0), then exit with the global grep status. # Else, when "sts" is bad, exit with the worst status we can find. if test $sts -eq 0 ; then exit $status_grep_global else if test "$status_grep" -gt 1 ; then exit "$status_grep" else exit $sts fi fi