Argument Parser II

A follow-up to Argument Parser I: the same three flags, but now each one also has a long-option spelling — which getopts (the bash builtin) can't parse at all. It only understands single-character options.

Input

Same as Part I: no input file, just your script's own command-line flags, in any order, zero or more times each. Each flag can be given in any of its forms:

-n <count>          or   --count <count>   or   --count=<count>
-v                   or   --verbose
-o <name>            or   --output <name>   or   --output=<name>

Output

Same three lines, same fixed order, regardless of which form each flag was given in:

n=<value or 0 if never given>
v=<true if given in any form, otherwise false>
o=<value or none if never given>

Constraints

• A flag may appear more than once, mixing forms freely — the last occurrence wins, whichever spelling it used.
• Values never contain whitespace or =.
• At most 20 flags total.

Example

Invocation:

./solution.sh -n 5 --verbose --output=report

Output:

n=5
v=true
o=report