3 files changed, 114 insertions, 2 deletions

@@ -1,5 +1,43 @@
-(use-modules (ice-9 peg)
-             (ice-9 match))
+#!/bin/sh
+#| -*- scheme -*-
+exec guile -e main -s "$0" "$@"
+
+Flat Fuck Format
+--- a new configuration format, because who doesn't need that?
+
+Copyright (C) 2023 Case Duckworth <acdw@acdw.net>
+
+Everyone is permitted to do whatever with this software, without
+limitation.  This software comes without any warranty whatsoever,
+but with two pieces of advice:
+
+- Don't hurt yourself.
+- Make good choices.
+
+Commentary:
+
+This script will convert files defined in the Flat Fuck Format (fff) into json.
+It will not convert anything back to fff.  fff is explicitly made to be as
+simple as possible, and exclusively human-written.  If a machine writes your
+configuration, ... use a better configuration format.  Or make your program
+scriptable!
+
+FLAT FUCK FORMAT : Specification
+|#
+!#
+
+(define-module (fff)
+  #:use-module (ice-9 peg)
+  #:use-module (ice-9 match)
+  #:use-module (srfi srfi-11)
+  #:version (0 1 0)
+  #:export (fff
+            fff?
+            fff/comments?
+            fff->scm))
+
+
+;;; PEG Grammar
 
 (define-peg-pattern fff all
   (and (* (or WHITESPACE NEWLINE))
@@ -0,0 +1,23 @@
+(use-modules (ice-9 format)
+             (ice-9 peg)
+             (ice-9 textual-ports)
+             (fff))
+
+(define (read-file file)
+  (call-with-input-file file get-string-all))
+
+(define (test-parse input)
+  (let loop ((str "")
+             (num 0)
+             (lst (string-split input #\newline)))
+    (cond
+     ((null? lst) (match-pattern fff str))
+     ((not (match-pattern fff str))
+      (format #t "!!!!!!!!!!!!!!!!!!!!!!!~%~s~%" lst))
+     (else
+      (format #t "~s~%~%" (peg:tree (match-pattern fff str)))
+      (when (match-pattern fff str)
+        (format #t "~s~%" (car lst)))
+      (loop (string-append str "\n" (car lst))
+            (+ num 1)
+            (cdr lst))))))
@@ -0,0 +1,51 @@
+# fff test file
+## mime-type: text/flat-as-fuck or text/plain
+
+## "naked" items
+
+naked1: value1
+naked2: value2
+
+## objects
+# objects are names followed by 2 colons then a block of items
+# a blank line ends the object.
+
+U.S. Capitals::
+Alaska: Anchorage
+New York: Albany
+
+World capitals::
+France: Paris
+Mexico: Mexico City
+
+## arrays
+# arrays are similar to objects, except the items don't have keys.
+# you can't have "naked" array items, because fff files always map to json objects.
+
+My favorite fruit::
+: apple
+: banana
+: grape
+
+Vegetables I hate::
+: mushrooms
+: corn
+
+## References
+# For structure, you can reference previously-defined objects, arrays, and items as values.
+# Prepend the thing's name with "@".
+
+Capitals::
+: @U.S. Capitals
+: @World capitals
+
+## You can put pretty much anything in the name of something or its value.
+# If you need to escape it, use a backslash.
+
+Fargo\: the movie: one of the films of all time
+You can even: escape new lines \
+              with a backslash. it'll delete all the space preceding the value \
+              on the \#next line so you can have nice hanging indents. \
+\             (If you need weird spacing ... you can do this weird backslash thing.)
+
+My twitter handle: \@iDontHaveOneLol