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125 lines
3.6 KiB
Plaintext
125 lines
3.6 KiB
Plaintext
# TODO: refactor this mess
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def args_parse($args; $opts):
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def _parse($args; $flagmap; $r):
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def _parse_with_arg($new_args; $optname; $value; $opt):
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if $opt.object then
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( ( $value
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| capture("^(?<key>.*?)=(?<value>.*)$")
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// error("\($value): should be key=value")
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) as {$key, $value}
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# TODO: validate option name key
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| _parse($new_args; $flagmap; ($r | .parsed[$optname][$key] |= $value))
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)
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elif $opt.array then
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_parse($new_args; $flagmap; ($r | .parsed[$optname] += [$value]))
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else
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_parse($new_args; $flagmap; ($r | .parsed[$optname] = $value))
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end;
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def _parse_without_arg($new_args; $optname):
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_parse($new_args; $flagmap; ($r | .parsed[$optname] = true));
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( ($args[0] | index("=")) as $assign_i
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| ( if $assign_i then $args[0][0:$assign_i]
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else $args[0]
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end
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) as $arg
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| if $arg == null then
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$r
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else
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if $arg == "--" then
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$r | .rest += $args[1:]
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elif $arg | test("^--?[^-]") then
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( $flagmap[$arg] as $optname
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| ($opts[$optname]? // null) as $opt
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| if $opt == null then
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if $arg | test("^-[^-]") then
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( $arg[0:2] as $arg
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| $flagmap[$arg] as $optname
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| ($opts[$optname]? // null) as $opt
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| if $opt == null then
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error("\($arg): no such argument")
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elif $opt.bool then
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_parse_without_arg((["-"+$args[0][2:]]+$args[1:]); $optname)
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else
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error("\($arg): needs an argument")
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end
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)
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else
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error("\($arg): no such argument")
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end
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elif $opt.string or $opt.array or $opt.object then
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if $assign_i then
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_parse_with_arg($args[1:]; $optname; $args[0][$assign_i+1:]; $opt)
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elif ($args | length) < 2 then
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error("\($arg): needs an argument")
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else
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_parse_with_arg($args[2:]; $optname; $args[1]; $opt)
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end
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else
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if $assign_i then error("\($arg): takes no argument")
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else _parse_without_arg($args[1:]; $optname)
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end
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end
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)
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else
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_parse($args[1:]; $flagmap; ($r | .rest += [$args[0]]))
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end
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end
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);
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# build {"-s": "name", "--long": "name", ...}
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def _flagmap:
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( $opts
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| to_entries
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| map(
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( ({(.value.short): .key}? // {})
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+ ({(.value.long): .key}? // {})
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)
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)
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| add
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);
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def _defaults:
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( $opts
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| to_entries
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| map(select(.value.default))
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| map({(.key): .value.default})
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| add
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);
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_parse($args; _flagmap; {parsed: _defaults, rest: []});
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def args_help_text($opts):
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def _opthelp:
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( [ .long
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, .short
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] | map(select(strings)) | join(",")
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) +
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( .string // .array // .object
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| if . then "=\(.)"
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else ""
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end
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);
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def _maxoptlen:
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[ $opts[]
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| (_opthelp | length)
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] | max;
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( _maxoptlen as $l
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| $opts
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| to_entries[]
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| (.value | .help_default // .default) as $default
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| [ "\(.value | _opthelp | rpad(" "; $l)) \(.value.description)"
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, if $default then
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if .value.object then
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[ "\n"
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, ( [$default | to_entries[] | "\(" "*$l) \(.key)=\(.value)"]
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| join("\n")
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)
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]
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else
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" (\($default))"
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end
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else
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empty
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end
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]
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| flatten
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| join("")
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);
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