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