72 lines
1.5 KiB
Bash
72 lines
1.5 KiB
Bash
|
set -u
|
||
|
|
set -e
|
||
|
|
|
||
|
|
# ParseArgs will parse a string that contains quoted strings the same as bash does
|
||
|
|
# (same as most other *nix shells do). This is secure in the sense that it doesn't do any
|
||
|
|
# executing or interpeting. However, it also doesn't do any escaping, so you shouldn't pass
|
||
|
|
# these strings to shells without escaping them.
|
||
|
|
parseargs() {
|
||
|
|
notquote="-"
|
||
|
|
str=$1
|
||
|
|
declare -a m=()
|
||
|
|
s=""
|
||
|
|
|
||
|
|
# Strip leading space, then trailing space, then add a terminating space.
|
||
|
|
str="${str## }"
|
||
|
|
str="${str%% }"
|
||
|
|
str+=" "
|
||
|
|
|
||
|
|
last_quote="${notquote}"
|
||
|
|
is_space=""
|
||
|
|
n=$(( ${#str} - 1 ))
|
||
|
|
i=-1
|
||
|
|
for ((i=0;i<=$n;i+=1)); do
|
||
|
|
c="${str:$i:1}"
|
||
|
|
|
||
|
|
# If we're ending a quote, break out and skip this character
|
||
|
|
if [ "$c" == "$last_quote" ]; then
|
||
|
|
last_quote=$notquote
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
|
||
|
|
# If we're in a quote, count this character
|
||
|
|
if [ "$last_quote" != "$notquote" ]; then
|
||
|
|
s+=$c
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
|
||
|
|
# If we encounter a quote, enter it and skip this character
|
||
|
|
if [ "$c" == "'" ] || [ "$c" == '"' ]; then
|
||
|
|
is_space=""
|
||
|
|
last_quote=$c
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
|
||
|
|
# If it's a space, store the string
|
||
|
|
re="[[:space:]]+" # must be used as a var, not a literal
|
||
|
|
if [[ $c =~ $re ]]; then
|
||
|
|
if [ "0" == "$i" ] || [ -n "$is_space" ]; then
|
||
|
|
echo continue $i $is_space
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
is_space="true"
|
||
|
|
m+=("$s")
|
||
|
|
s=""
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
|
||
|
|
is_space=""
|
||
|
|
s+="$c"
|
||
|
|
done
|
||
|
|
|
||
|
|
if [ "$last_quote" != "$notquote" ]; then
|
||
|
|
>&2 echo "error"
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
for arg in "${m[@]}"; do
|
||
|
|
echo "$arg"
|
||
|
|
done
|
||
|
|
return 0
|
||
|
|
}
|