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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
shesc [CONTENT...]
shesc -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
CONTENT a literal string to be escaped
Convert data to/from POSIX sh double quote string escaping. If
CONTENT is not given, get data from STDIN.
Examples:
Escape sh control characters in a string:
$ printf 'content="%s"\n' "$(shesc '"string" $(dollar "`cmd`") \ ')"
content="\"string\" \$(dollar \"\`cmd\`\") \\ "
Escape the content from a file:
$ shesc < file.conf
EOF
}
for flag in "$@"; do
case "$flag" in
(--)
break
;;
(--help)
usage
help
exit
;;
(*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
(h)
usage
help
exit
;;
(*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
esc() {
sed 's|\([\\`"$]\)|\\\1|g'
}
if [ $# = 0 ]; then
esc
else
for s in "$@"; do
printf '%s\n' "$s" | esc
done
fi
|
