From 89817d53ec7dbf5cff9c873afe9b7bc939dbe8c3 Mon Sep 17 00:00:00 2001
From: Marc Coquand <marc@mccd.space>
Date: Tue, 14 May 2024 11:21:26 -0500
Subject: Add sort algorithms

---
 lib/grep.ml | 39 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 36 insertions(+), 3 deletions(-)

diff --git a/lib/grep.ml b/lib/grep.ml
index e438d0a..0d79c57 100644
--- a/lib/grep.ml
+++ b/lib/grep.ml
@@ -12,6 +12,21 @@ let headline_pattern =
   Sys.getenv_opt "STITCH_HEADLINE_PATTERN" |> Option.value ~default:"^\\* "
 
 
+let find_sort_modification () =
+  let open Shexp_process in
+  let open Shexp_process.Infix in
+  call [ "find"; "."; "-printf"; "%Ts/%f\\n" ]
+  |- call [ "sort"; "-n" ]
+  |- call [ "cut"; "-c12-" ]
+  |- call [ "sed"; "/^\\./d" ]
+
+
+let find_sort_name () =
+  let open Shexp_process in
+  let open Shexp_process.Infix in
+  call [ "find"; "." ] |- call [ "sort"; "-n" ] |- call [ "cut"; "-c3-" ]
+
+
 let run_print ~dir args =
   let open Shexp_process in
   let open Shexp_process.Infix in
@@ -19,10 +34,25 @@ let run_print ~dir args =
 
 
 let headline_args =
-  [ grep_cmd; "^\\*"; "-H"; "-r"; "-n"; "--separator=|"; "--no-messages" ]
+  [ "xargs"; grep_cmd; "^\\*"; "-H"; "-r"; "-n"; "--separator=|"; "--no-messages" ]
 
 
-let get_headlines () = run_print ~dir:execution_directory headline_args
+(* type sort = *)
+(*   | Name *)
+(*   | LastModified *)
+
+(* let sort_to_cmd = function *)
+(*   | Name -> find_sort_name () *)
+(*   | LastModified -> find_sort_modification () *)
+
+let get_headlines () =
+  let open Shexp_process in
+  let open Shexp_process.Infix in
+  eval
+    (chdir
+       execution_directory
+       (find_sort_modification () |- call headline_args |- read_all))
+
 
 let get_tagged_headlines tag () =
   let open Shexp_process in
@@ -30,7 +60,10 @@ let get_tagged_headlines tag () =
   eval
     (chdir
        execution_directory
-       (call headline_args |- call [ grep_cmd; "-E"; "--no-messages"; tag ] |- read_all))
+       (find_sort_name ()
+        |- call headline_args
+        |- call [ grep_cmd; "-E"; "--no-messages"; tag ]
+        |- read_all))
 
 
 let get_tags () =
-- 
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