rename relish to flesh

snippets/genbind.f

@@ -0,0 +1,57 @@
+#!/bin/flesh
+
+;; Flesh: Flexible Shell
+;; Copyright (C) 2021 Ava Affine
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;; GENBIND
+
+(def gen-binding
+"Takes two arguments: a symbol (use quote) and a string token
+  The symbol should coorespond to a binary on the path (else command will fail)
+  The string token is taken to be an argument to that command
+  A lambda is then made which accepts a list of additional arguments.
+  When called, the resulting function will construct and execute a call to load
+
+The point is to be able to autogenerate bindings for shell commands.
+Example: (eval ((gen-binding (q ls) '-l') ('-a')))
+     Or: (def gcommit 'use: (gcommit my-message)'
+           (lambda (arg) (eval ((gen-binding 'git' 'commit') ('-s' '-m' arg)))))
+
+
+Or, a more advanced use:
+  (def -git-opts 'all subcommands for guix'
+    ('add' 'push' 'stash'))
+
+  ;; define global functions for each subcommand
+  (let ((gx-iter (pop -git-opts)))
+    (while (gt? (len gx-iter) 1)
+      (let ((subc (car gx-iter))
+            (rest (cdr gx-iter)))
+        (def (concat 'g-' subc)
+          'subcommand binding for git. takes a list of args'
+          (lambda (args) (eval ((gen-binding 'git' subc) args))))
+        (set (q gx-iter) (pop rest)))))"
+   (sym subcommand)
+   (let ((lam ((q lambda)
+               (cons (q args))
+               (cons let (((q func-call) (cons cons (q l) (cons q sym) subcommand))
+                          ((q arg-iter) (cons pop (q args))))
+                       (cons while (cons gt? (cons len (q arg-iter)) 1)
+                         (cons set (cons q (q func-call)) (cons cons (q func-call) (cons car (q arg-iter))))
+                         (cons set (cons q (q arg-iter)) (cons pop (cons cdr (q arg-iter)))))
+                       (cons echo '+ ' (cons cdr (cons pop (q func-call))))
+                       (cons eval (q func-call))))))
+     (eval lam)))