Hi Matt, Thanks for the patch. My instinct however is to point you towards SRFI-37, which in addition to supporting multiple argument values can also be used to fold over the precise argument order. I just don't know that we should be expanding (ice-9 getopt-long); it has its use case and if your needs go beyond it, then probably your needs go way beyond it.
https://www.gnu.org/software/guile/manual/html_node/SRFI_002d37.html Ludovic, second opinions? Andy On Sat 17 Oct 2015 19:05, Matt Wette <matthew.we...@verizon.net> writes: > This is in reference to guile-2.0.11. > > The (ice-9 getopt-long) module does not provide a process for > accessing multiple command line arguments. > > A patch for ice-9/getopt-long.scm is attached which adds the procedure > getopt-ref/many to access multiple argument values. > > The following program and results illustrate the use of the current > getopt-ref and the proposed getopt-ref/many: > > mwette$ ./gotest.scm -f foo1 -b bar1 -f foo2 baz1 baz2 > > program arguments: > > ("./gotest.scm" "-f" "foo1" "-b" "bar1" "-f" "foo2" "baz1" "baz2") > > getopt using option-ref: > > foo: "foo2" > > bar: "bar1" > > getopt using option-ref/many: > > foo: ("foo1" "foo2") > > bar: "bar1" > > where > > mwette$ cat gotest.scm > > #!/opt/local/bin/guile > > !# > > (use-modules (ice-9 getopt-long)) > > (define spec > > '((foo (single-char #\f) (value #t)) > > (bar (single-char #\b) (value #t)))) > > (let* ((args (program-arguments)) > > (opts (getopt-long args spec))) > > (simple-format #t "program arguments:\n") > > (simple-format #t "~S\n" args) > > (simple-format #t "\ngetopt using option-ref:\n") > > (simple-format #t "foo: ~S\n" (option-ref opts 'foo #f)) > > (simple-format #t "bar: ~S\n" (option-ref opts 'bar #f)) > > (simple-format #t "\ngetopt using option-ref/many:\n") > > (simple-format #t "foo: ~S\n" (option-ref/many opts 'foo #f)) > > (simple-format #t "bar: ~S\n" (option-ref/many opts 'bar #f)) > > ) > > > > *** getopt-long.scm-orig 2015-10-15 06:40:29.000000000 -0700 > --- getopt-long.scm 2015-10-17 09:42:41.000000000 -0700 > *************** > *** 154,159 **** > --- 154,173 ---- > ;;; (option-ref (getopt-long ...) 'x-includes 42) => "/usr/include" > ;;; (option-ref (getopt-long ...) 'not-a-key! 31) => 31 > > + ;;; (option-ref/many OPTIONS KEY DEFAULT) > + ;;; Return value in alist OPTIONS using KEY, a symbol; or DEFAULT if not > + ;;; found. If multiple arg-options provided a list is returned. The value > + ;;; is either a string, a list or `#t'. > + ;;; > + ;;; For example, if the above was executed with multiple x-includes flags, > + ;;; then all will be returned in a list: > + ;;; > + ;;; (getopt-long '("my-prog" "-vk" "/tmp" "foo1" "--x-includes=/usr/include" > + ;;; "--x-includes=/opt/includd" "--" "-fred" "foo2" "foo3") > + ;;; grammar) > + ;;; (option-ref/many (getopt-long ...) 'x-includes 42) > + ;;; => ("/usr/include" "/opt/include") > + > ;;; Code: > > (define-module (ice-9 getopt-long) > *************** > *** 162,168 **** > #:use-module (ice-9 match) > #:use-module (ice-9 regex) > #:use-module (ice-9 optargs) > ! #:export (getopt-long option-ref)) > > (define %program-name (make-fluid "guile")) > (define (program-name) > --- 176,182 ---- > #:use-module (ice-9 match) > #:use-module (ice-9 regex) > #:use-module (ice-9 optargs) > ! #:export (getopt-long option-ref option-ref/many)) > > (define %program-name (make-fluid "guile")) > (define (program-name) > *************** > *** 368,371 **** > --- 382,397 ---- > The value is either a string or `#t'." > (or (assq-ref options key) default)) > > + (define (option-ref/many options key default) > + "Return value, or values, in alist OPTIONS using KEY, a symbol; or > DEFAULT if not found. > + The value is either a string, a list or `#t'." > + (let loop ((rez #f) (opts options)) > + (if (null? opts) (or rez default) > + (if (eq? key (caar opts)) > + (cond > + ((pair? rez) (loop (cons (cdar opts) res) (cdr opts))) > + (rez (loop (list (cdar opts) rez) (cdr opts))) > + (else (loop (cdar opts) (cdr opts)))) > + (loop rez (cdr opts)))))) > + > ;;; getopt-long.scm ends here
