Add man page

clash/.gitignore

@@ -1 +1,3 @@
-clash
+clash
+clash.md
+clash.1

clash/Makefile

@@ -1,13 +1,28 @@
 LISP=sbcl
 
-all: clash
+PREFIX=~/.local
+
+all: clash clash.1
 
 clash: clash.asd format.lisp parse-date.lisp clash.lisp
 	$(LISP) --eval '(ql:quickload :clash)' \
 			--eval '(asdf:make :clash)' \
 			--eval '(uiop:quit)'
 
+clash.md: clash.asd format.lisp parse-date.lisp clash.lisp
+	$(LISP) --eval '(ql:quickload :clash)' \
+			--eval '(clash:make-markdown-doc)' \
+			--eval '(uiop:quit)' \
+			-- clash.md
+
+clash.1: clash.md
+	go-md2man <clash.md >clash.1
+
+install: clash clash.1
+	install -D clash $(PREFIX)/bin/
+	install -D clash.1 $(PREFIX)/share/man/man1/
+
 clean:
-	rm -f clash
+	rm -f clash clash.md clash.1
 
 .PHONY: all clean

clash/clash.lisp

@@ -15,7 +15,8 @@
                 #:read-directorysizes-for-trash-directory
                 #:write-directorysizes-for-trash-directory)
   (:use #:cl #:clash/parse-date #:clash/format)
-  (:export #:toplevel))
+  (:export #:toplevel
+           #:make-markdown-doc))
 
 (in-package :clash)
 
@@ -1041,3 +1042,13 @@ Args can be supplied to facilitate testing in SLIME."
         (clingon:run (toplevel/command) args)
         (clingon:run (toplevel/command)))
     (flush-directorysizes-cache)))
+
+;; Used from the build system
+(defun make-markdown-doc ()
+  "Generate documentation in a markdown format."
+  ;; the first argument is "--"
+  (let ((target (second (uiop:command-line-arguments))))
+    (with-open-file (out target :direction :output
+                                :if-exists :overwrite
+                                :if-does-not-exist :create)
+      (clingon:print-documentation :markdown (toplevel/command) out))))