@code{(require 'getopt-parameters)} @ftindex getopt-parameters @defun getopt->parameter-list optnames arities types aliases desc @dots{} Returns @var{*argv*} converted to a parameter-list. @var{optnames} are the parameter-names. @var{arities} and @var{types} are lists of symbols corresponding to @var{optnames}. @var{aliases} is a list of lists of strings or integers paired with elements of @var{optnames}. Each one-character string will be treated as a single @samp{-} option by @code{getopt}. Longer strings will be treated as long-named options (@pxref{Getopt, getopt--}). If the @var{aliases} association list has only strings as its @code{car}s, then all the option-arguments after an option (and before the next option) are adjoined to that option. If the @var{aliases} association list has integers, then each (string) option will take at most one option-argument. Unoptioned arguments are collected in a list. A @samp{-1} alias will take the last argument in this list; @samp{+1} will take the first argument in the list. The aliases -2 then +2; -3 then +3; @dots{} are tried so long as a positive or negative consecutive alias is found and arguments remain in the list. Finally a @samp{0} alias, if found, absorbs any remaining arguments. In all cases, if unclaimed arguments remain after processing, a warning is signaled and #f is returned. @end defun @defun getopt->arglist optnames positions arities types defaulters checks aliases desc @dots{} Like @code{getopt->parameter-list}, but converts @var{*argv*} to an argument-list as specified by @var{optnames}, @var{positions}, @var{arities}, @var{types}, @var{defaulters}, @var{checks}, and @var{aliases}. If the options supplied violate the @var{arities} or @var{checks} constraints, then a warning is signaled and #f is returned. @end defun @noindent These @code{getopt} functions can be used with SLIB relational databases. For an example, @xref{Using Databases, make-command-server}. @noindent If errors are encountered while processing options, directions for using the options (and argument strings @var{desc} @dots{}) are printed to @code{current-error-port}. @example (begin (set! *optind* 1) (set! *argv* '("cmd" "-?") (getopt->parameter-list '(flag number symbols symbols string flag2 flag3 num2 num3) '(boolean optional nary1 nary single boolean boolean nary nary) '(boolean integer symbol symbol string boolean boolean integer integer) '(("flag" flag) ("f" flag) ("Flag" flag2) ("B" flag3) ("optional" number) ("o" number) ("nary1" symbols) ("N" symbols) ("nary" symbols) ("n" symbols) ("single" string) ("s" string) ("a" num2) ("Abs" num3)))) @print{} Usage: cmd [OPTION ARGUMENT ...] ... -f, --flag -o, --optional= -n, --nary= ... -N, --nary1= ... -s, --single= --Flag -B -a ... --Abs= ... ERROR: getopt->parameter-list "unrecognized option" "-?" @end example