#!/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
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